JP7422288B2 - Implementation system and implementation method - Google Patents

Description

The present invention carries in a board having a plurality of individual pieces, performs a predetermined operation on each of the plurality of individual pieces, and then carries out the board repeatedly. The present invention relates to a mounting system and a mounting method for producing a plurality of mounted individual pieces on a board-by-board basis.

Conventionally, a board having a plurality of individual parts (so-called multi-sided board) is used, and components are mounted on each of the plurality of individual parts of the board. ) is known. A mounting system is known that simultaneously produces board units. In such a mounting system, solder is supplied to each individual piece, components are attached to each individual piece, and finally the entire board is heated to perform solder reflow. Individual pieces determined to be defective in the inspection are discarded as rejected products.

In a mounting system, it is unavoidable that the above-mentioned rejected products will occur during production, and in order to reliably produce the target number of mounted pieces, it is necessary to It is necessary to additionally produce the same number of mounting pieces. Therefore, after producing the minimum number of boards that would be required if there were no rejected products, the number of individual parts that were determined to be rejected in the final inspection was determined. , that number of newly mounted individual pieces are produced.

In addition, in the mounting system, parts are not mounted on individual pieces that are found to be defective during production, and the total number of good pieces has reached the target production number. A device is known in which the supply of substrates is sometimes stopped (see Patent Document 1 below). According to such a mounting system, even when a defect occurs in an individual piece, the work that an operator must perform can be greatly reduced, making it possible to increase productivity.

Patent No. 4322556

However, in the conventional mounting system described above, if there is an individual piece that is determined to be defective in the inspection after solder reflow, additional work is required to replenish it, which burdens the worker. The problem was that it was large.

Therefore, the present invention reduces the workload of the worker by automatically producing mounting individual parts to supplement the missing part when there is an individual part determined to be defective in the inspection after solder reflow. The purpose is to provide an implementation system and implementation method that can be used.

The mounting system of the present invention includes a board supply unit that supplies a board having a plurality of individual pieces, a solder supply unit that supplies solder to each of the plurality of individual pieces of the board supplied from the board supply unit, and the solder supply unit. A component mounting section that attaches components to the individual pieces to which solder has been supplied by the unit, and a reflow section that solders the components to the individual pieces by heating the board with the components mounted on the individual pieces and performing solder reflow. and a mounting line including a post-reflow inspection section that performs a post-reflow inspection to inspect the quality of the mounted state of the components after the solder reflow by the reflow section, and a board supplied from the substrate supply section as a board on which components are finally mounted. If the post-reflow inspection detects a defective individual piece after reflow, which is an individual piece with a defective component mounting condition after the solder reflow, in the final board that has been soldered, a new board is used as an additional board. a management device that causes the board supply unit to supply the mounting line, and the mounting line includes an initial failure information acquisition unit that acquires initial failure information of each individual piece of the board supplied from the board supply unit; , a solder inspection unit that inspects the state of solder supplied to each individual piece of the board from which the initial failure information has been acquired, and the component mounting unit inspects the initial failure of the individual pieces of the board from which the initial failure information has been acquired. Parts are mounted only on individual pieces for which the defect information acquisition section has determined that there are no initial defects and the solder inspection section has determined that the solder condition is good .

The mounting method of the present invention includes a board supply unit that supplies a board having a plurality of individual pieces, a solder supply unit that supplies solder to each of the plurality of individual pieces of the board supplied from the board supply unit, and the solder supply unit. A component mounting section that attaches components to the individual pieces to which solder has been supplied by the unit, and a reflow section that solders the components to the individual pieces by heating the board with the components mounted on the individual pieces and performing solder reflow. and a mounting method using a mounting line including a post-reflow inspection section that performs a post-reflow inspection to inspect the quality of the mounted state of the component after the solder reflow by the reflow section, wherein the board on which the component is finally mounted is In the final board supplied from the board supply section, if the post-reflow inspection detects a post-reflow defective individual part that is an individual part with a poor component mounting state after the solder reflow, a new The board is supplied as an additional board from the board supply unit to the mounting line, and after the mounting line acquires initial failure information of each individual piece of the board supplied from the board supply unit, The state of the solder supplied to each individual piece of the board is inspected, and based on the acquired initial failure information, it is determined that there is no initial failure among the individual pieces of the board, and the solder is not supplied. Components are attached only to individual pieces for which the solder condition is judged to be good .

According to the present invention, when there is an individual piece part that is determined to be defective in the inspection after solder reflow, the work burden on the worker is reduced by automatically producing the mounting individual piece part to supplement the missing part. It can be reduced.

Schematic configuration diagram of a mounting system according to an embodiment of the present invention A plan view of a board that is a work target of a mounting system in an embodiment of the present invention (a) (b) (c) (d) Diagrams showing examples of inspection results performed on each individual piece of a board by the mounting system according to an embodiment of the present invention A block diagram showing a control system of a mounting system according to an embodiment of the present invention A flowchart showing the flow of the installation target setting process performed by the management device of the mounting system in an embodiment of the present invention. (a) (b) (c) Diagrams showing a process in which the management device of the mounting system in an embodiment of the present invention sets some of the plurality of individual pieces of the final board as mounting targets. A flowchart showing the flow of substrate supply processing performed by the substrate supply processing unit of the management device included in the mounting system according to an embodiment of the present invention. A block diagram showing a control system of a component mounting device included in a mounting system according to an embodiment of the present invention A flowchart showing the flow of component mounting processing performed by a component mounting device included in a mounting system according to an embodiment of the present invention. An example of changes in the values of the required number of boards, the number of actual boards supplied, the number of rejected pieces, the cumulative number of rejected pieces, and the number of pieces to be mounted on the final board in the mounting system according to an embodiment of the present invention is shown below. Diagram shown Flowchart showing the flow of recovery processing performed by the recovery processing unit of the management device included in the implementation system according to an embodiment of the present invention (a) (b) Diagrams showing the progress in which the recovery processing unit included in the mounting system according to an embodiment of the present invention additionally sets a mounting target on the final board. A flowchart showing the flow of the process to increase the number of required boards performed by the process unit for increasing the number of required boards of the management device included in the mounting system according to an embodiment of the present invention. A diagram illustrating an example of the transition of individual piece part status information on the final board and the transition of individual piece part status information on an additional board, which are the work targets of the mounting system according to an embodiment of the present invention.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a mounting system 1 in an embodiment of the present invention. The mounting system 1 includes a substrate supply device 2, a mounting line 3, a substrate recovery device 4, and a management device 5.

The substrate supply device 2 functions as a substrate supply section in the mounting system 1, and sequentially supplies the substrates KB to the mounting line 3 one by one. The mounting line 3 performs necessary operations on the board KB and then carries it out to the board recovery device 4 . The board collection device 4 receives and collects the board KB carried out from the mounting line 3. The management device 5 performs control (operation management) of the substrate supply device 2, each device constituting the mounting line 3, and the substrate recovery device 4.

FIG. 2 shows a board KB on which the mounting system 1 works. The substrate KB is a so-called multi-sided substrate, and a plurality of (here, nine) individual pieces M (M1 to M9) arranged in a matrix can be separated from each other. Although the number of individual pieces M is nine here, this is just an example, and the number does not necessarily have to be nine.

In FIG. 2, an electrode pattern PT of the same shape is formed on the upper surface of each individual piece M, and an identification code KC is attached to one corner of the upper surface of the substrate KB. Identification information specific to the board KB is written in the identification code KC.

The mounting line 3 includes, in order from the upstream side of the board KB flow (left side in FIG. 1), an initial failure information acquisition device 11, a solder supply device 12, a solder inspection device 13, a component placement device 14, a placement state inspection device 15, and a reflow device. A device 16 and a post-reflow inspection device are provided.

The initial failure information acquisition device 11 receives the board KB supplied from the board supply device 2, reads the identification information of the board KB from the identification code KC of the board KB using an identification information reading device (not shown), and then reads the identification information of the board KB from the identification code KC of the board KB. Perform initial failure information acquisition work (initial failure information acquisition step of the mounting method using the mounting system 1). The initial failure information acquisition work is performed by imaging each of the plurality of individual pieces M as inspection targets with a camera (not shown) and detecting the presence or absence of a bad mark attached in advance.

When the initial failure information acquisition device 11 detects an individual piece M with a bad mark (referred to as an "initial failure individual piece"), the initial failure information acquisition device 11 acquires information on the position of the detected initial failure individual piece on the board KB. is acquired as "individual piece state information" at the time of acquiring initial failure information. Then, the acquired individual piece state information and information on the position of the board KB in the mounting system 1 (board location information) are transmitted to the management device 5.

FIG. 3(a) shows an example of individual piece state information at the time of acquiring initial failure information. In FIG. 3(a), the individual piece part M marked with a "-" (the individual piece part M with the code M1) is an initial defective piece part with a bad mark. The individual pieces M that are not marked are the individual pieces M that are not marked with a bad mark and have no initial defects. After completing the initial failure information acquisition work and transmitting the individual piece state information and board location information at the time of initial failure acquisition to the management device 5, the initial failure information acquisition device 11 transfers the board KB to the solder supply device 12 on the downstream side. Carry it out.

As described above, in the present embodiment, the initial failure information acquisition device 11 serves as an initial failure information acquisition unit that acquires initial failure information of each individual piece M included in the board KB for each board KB.

When the management device 5 receives the individual piece state information and board location information at the time of acquiring the initial failure information from the initial failure information acquisition device 11, it creates and stores "substrate/individual part state data" including these pieces of information. do.

The solder supply device 12 receives the board KB carried out from the initial failure information acquisition device 11. Then, an identification information reading device (not shown) reads the identification information of the board KB from the identification code KC of the board KB, and after receiving the board/individual part status data from the management device 5, a solder supply operation is performed (the mounting system 1 solder supply process of mounting method).

In FIG. 1, the solder supply device 12 is equipped with a stencil 12M and a squeegee 12S, and the solder supply operation is carried out by bringing the board KB into contact with the stencil 12M, and sliding the squeegee 12S on the stencil 12M to scrape up the solder. conduct. When the substrate KB is brought into contact with the stencil 12M, the alignment reference points of the substrate KB and the stencil 12M (usually approximately at their central positions) are made to coincide with each other in plan view. By such screen printing, solder is supplied (applied) to the upper surface of each of the plurality of individual pieces M. After performing the solder supply work, the solder supply device 12 carries out the board KB to the solder inspection device 13 on the downstream side.

As described above, in the present embodiment, the solder supply device 12 serves as a solder supply section that supplies solder to each of the plurality of individual pieces M of the board KB supplied from the board supply device 2.

The solder inspection device 13 receives the board KB carried out from the solder supply device 12. Then, an identification information reading device (not shown) reads the identification information of the board KB from the identification code KC of the board KB, and after receiving the board/individual part status information data from the management device 5, a solder inspection work is performed (the mounting system solder inspection process of the mounting method according to 1).

In the solder inspection work, the solder inspection device 13 first determines which of the plurality of pieces M of the board KB is an initially defective piece based on the board/piece state information data received from the management device 5. Department. Then, each individual piece M excluding the identified initial defective individual piece is imaged by a camera (not shown) as an inspection target, and an individual piece M having a poor solder condition is detected as a "solder defective individual piece".

When the solder inspection device 13 detects a solder defective individual piece, it acquires information on the position of the detected solder defective individual piece on the board KB as "individual piece state information" during the solder inspection. Then, the acquired individual piece state information and information on the position of the board KB in the mounting system 1 (board location information) are transmitted to the management device 5.

FIG. 3(b) shows an example of individual piece state information at the time of solder inspection. In FIG. 3(b), the individual piece part M marked with a "-" (the individual piece part M with the code M1) is an initial defective piece part, and the individual piece part M marked with a "+" mark (Individual piece part M with code M3) is a solder defective individual piece part. After completing the solder inspection work and transmitting the individual piece state information and board location information during the solder inspection to the management device 5, the solder inspection device 13 carries out the board KB to the component mounting device 14 on the downstream side.

As described above, in this embodiment, the solder inspection device 13 serves as a solder inspection section that inspects the state of the solder supplied to each individual piece M by the solder supply device 12 for each board KB.

When the management device 5 receives the individual piece state information and board location information during the solder defect inspection from the solder inspection device 13, it converts these information into board/individual part state data (in detail, individual piece part state information). Add and update content. As a result, the board/individual piece status data includes initial failure information and solder failure information, and the board/individual piece status data includes "attachability information."

Here, the mountability information is information as to whether a component can be mounted on each individual piece M, and is an "uninstallable individual piece" that is an individual piece M to which a component cannot be mounted. and information on the "installable individual piece part" which is the individual piece part M to which a component can be attached. Specifically, the uninstallable individual piece part consists of the initial defective individual piece part and the solder defective individual piece part, and the attachable individual piece part consists of the individual piece part M that does not correspond to the uninstallable individual piece part (no initial failure). , and the individual piece M) with good solder inspection results. In FIG. 3(b), the individual piece part M with the code M1 which is the initial defective individual piece part and the individual piece part M with the code M3 which is the solder defective individual piece part correspond to the individual piece parts that cannot be attached. The five individual pieces M with reference numerals M2, M4, M5, M6, M7, M8, and M9, which are the individual pieces other than the uninstallable individual pieces, correspond to the attachable individual pieces.

The component mounting device 14 receives the board KB carried out from the solder inspection device 13. Then, an identification information reading device (not shown) reads the identification information of the board KB from the identification code KC of the board KB, and after receiving the board/individual part status information data from the management device 5, the component mounting work is performed (the mounting system 1 or the component mounting process of the component mounting method using the component mounting device 14).

In FIG. 1, the component mounting device 14 includes a board transport section 14a, a component supply section 14b, and a mounting head 14c. In the component mounting work, first, based on the board/individual part status information data received from the management device 5, it is determined which of the plurality of individual parts M included in the board KB is a mountable individual part. do. Then, all or part of the grasped mountable individual pieces are set as targets to which components are to be mounted (referred to as "mounting targets").

In FIG. 3(b), the individual piece part M marked with a "-" (the individual piece part M with the code M1) is an initial defective piece part, and the individual piece part M marked with a "+" mark (Individual piece part M with code M3) is a solder defective individual piece part. The five individual pieces M that are not marked with a "-" or "+" mark (the individual pieces M with the codes M2, M4, M5, M6, M7, M8, and M9) are attachable individual pieces. If there is a board KB other than the board KB to which a component is finally mounted (referred to as the "final board"), all of the mountable individual pieces are set as mounting targets.

After setting all or some of the plurality of (in this case nine) individual pieces M included in the board KB as mounting targets, the component mounting device 14 applies a predetermined mounting program to the individual pieces set as mounting targets. and then perform the work of mounting the parts (component mounting work). After the component mounting device 14 has mounted the component on the individual piece set as the mounting target, the component mounting device 14 carries out the board KB to the mounting state inspection device 15 on the downstream side.

As described above, in the present embodiment, the component mounting device 14 applies a predetermined mounting program to the individual pieces to which solder is supplied by the solder supply unit and is set as the mounting target. This is the mounting part.

The mounting state inspection device 15 receives the board KB carried out from the component mounting device 14. Then, the identification information of the board KB is read from the identification code KC of the board KB (not shown), the identification information of the board KB is read from the identification code KC of the board KB by an identification information reading device (not shown), and the management device 5 After receiving the status information data, a mounting state inspection work is performed (a mounting state inspection step of the mounting method using the mounting system 1).

In the mounting state inspection work, based on the board/individual part state information data received from the management device 5, the initial defective individual parts acquired by the initial failure information acquisition device 11 and the solder detected by the solder inspection device 13 are Identify defective individual pieces. Then, each individual part M excluding the initial defective individual part and the solder defective individual part is imaged by a camera (not shown) as an inspection object, and the individual part M in which the component is installed in a good state is designated as a "good installation individual part". On the other hand, an individual piece part M in which the component is poorly installed is detected as a "defectively installed individual piece part."

When the mounting state inspection device 15 detects the well-fitted individual piece portion and the poorly-fitted individual piece portion, it uses the information of the detected well-fitted individual piece portion and the poorly fitted individual piece portion as individual piece part state information at the time of the fitted state inspection. , this individual piece state information and information on the position of the board KB in the mounting system 1 (board location information) are transmitted to the management device 5.

FIG. 3(c) shows an example of the individual piece state information at the time of the wearing state inspection. In FIG. 3(c), among the five individual parts (individual parts M with codes M2, M4, M5, M6, M7, M8, and M9) that are set as mounting targets and have components mounted, , the six individual pieces M marked with "○" are the individual pieces parts with good attachment, and the one piece part M marked with "x" (the individual piece part M with the code M6) indicates a poorly installed individual piece. The mounting state inspection device 15 performs a mounting state inspection work, and after transmitting the individual piece state information and substrate location information to the management device 5, carries out the board KB to the reflow device 16 on the downstream side.

As described above, in this embodiment, the mounting state inspection device 15 serves as a mounting state inspection unit that inspects the mounting state of the component in the individual piece portion M on which the component is mounted by the component mounting device 14.

When the management device 5 receives the individual piece state information and board location information at the time of the mounting state inspection from the mounting state inspection device 15, it writes these pieces of information to the board/individual part state data to update the contents. As a result, in addition to the initial failure information and solder failure information (installability information), the board/individual part status data includes "installation", which is information on the quality of the installation status of each individual part M on which the component is installed. This will include "pass/fail information".

The reflow device 16 receives the board KB carried out from the mounting state inspection device 15, performs solder reflow, and carries it out to the downstream post-reflow inspection device 17 (reflow step of the mounting method by the mounting system 1). In solder reflow, components are soldered to each individual piece M by heating the board KB.

As described above, in this embodiment, the reflow device 16 serves as a reflow unit that solders the components to each piece M by heating the board KB on which the components are mounted and reflowing the solder.

The post-reflow inspection device 17 receives the board KB taken out from the reflow device 16, reads the identification information of the board KB from the identification code KC of the board KB using an identification information reading device (not shown), and checks the board/individual piece from the management device 5. After receiving the status information data, the board KB is subjected to a post-reflow inspection process (post-reflow inspection process of the mounting method using the mounting system 1).

The post-reflow inspection device 17 performs the post-reflow inspection work by first determining which of the plurality of individual pieces M of the board KB has good attachment based on the board/individual part status information data received from the management device 5. Determine whether it is an individual piece. Then, the identified individual chip parts with good mounting are imaged with a camera (not shown) as inspection targets, and among the individual chip parts with good mounting, the individual chip parts M in which the parts are installed in a good state after reflow are designated as "passing individual chip parts". At the same time, among the well-installed individual piece parts, the individual piece part M in which the component is poorly mounted after solder reflow is detected as a "defective individual piece part after reflow".

The post-reflow inspection device 17 collectively collects the individual pieces other than the accepted individual pieces, that is, the initially defective individual pieces, the solder-defective individual pieces, the poorly installed individual pieces, and the post-reflow defective individual pieces. The information on the number of accepted individual pieces and the information on the number of rejected individual pieces are used as the individual piece state information at the time of post-reflow inspection, and this individual piece state information and the mounting system 1 of the board KB are The information on the position within the board (substrate location information) is transmitted to the management device 5.

FIG. 3(d) shows an example of individual piece state information at the time of post-reflow inspection. In Fig. 3(d), the five individual pieces M marked with "○" (the individual pieces M with the codes M2, M5, M6, M7, and M8) are the accepted individual pieces, and the others The individual piece part is the rejected individual piece part. Among the rejected pieces, the pieces M marked with a "-" (single parts M with the code M1) are initially defective pieces, and the pieces marked with a "+" M (single part M with code M3) is a soldering defective part, M (single part M with code M6) is a poorly installed part, "*" The marked individual piece M (the individual piece M with the code M9) is a defective individual piece after reflow. In FIG. 3(d), an individual piece M9 with reference numeral M9 is an individual piece M in which the mounting condition of the component was good, but it was determined to be defective after reflow in the subsequent post-reflow inspection.

As described above, in the present embodiment, the post-reflow inspection device 17 serves as a post-reflow inspection section that performs a post-reflow inspection to inspect the quality of the mounting state of components after solder reflow by the reflow device 16.

When the management device 5 receives the individual piece state information and substrate location information at the time of post-reflow inspection from the post-reflow inspection device 17, the management device 5 adds these information to the substrate/individual piece state data to update the contents. As a result, the board/individual part condition data includes information on whether or not it can be installed (initial failure information and solder failure information), installation failure information, and whether or not the installation condition of each individual piece after reflow is good or not. information will be included.

The post-reflow inspection device 17 performs the post-reflow inspection work, and after transmitting the individual piece state information and substrate location information to the management device 5, carries out the substrate KB to the substrate recovery device 4 on the downstream side.

Next, control (operation management) of each device by the management device 5 will be explained. In FIG. 4, the management device 5 includes a storage section 5a, a substrate/individual piece state data generation/updating section 5b, a mounting target setting section 5c, an individual section counting section 5d, a substrate counting section 5e, a substrate supply processing section 5f, a final It is equipped with a substrate processing section 5g.

In FIG. 4, the storage unit 5a of the management device 5 stores production data SD. In addition, as shown in FIG. 4, the storage unit 5a includes, in addition to the above-mentioned board/piece condition data (signed as "KKD"), the cumulative number of passed pieces GPN, and the cumulative number of rejected pieces. The number DPN, the number JKN of actual boards supplied, the number FKN of produced boards, the number NKN of required boards, and the number Md of individual pieces to be finally mounted on boards are stored (the contents are updated).

The production data SD includes "target production number PN" and "board information KJ" (FIG. 4). The target production number PN is data on the target number of mounted pieces to be produced by the mounting system 1.

The board information KJ is information about the board KB that is the work target in the mounting line 3, and includes "number of board pieces SR," "piece arrangement data KHD," and "first mounting program PG1." (Figure 4). The number of individual board pieces SR is information on the number of individual pieces M on each board KB, and in this embodiment, SR=9 (pieces). The individual piece part arrangement data KHD is data indicating the arrangement of each individual piece part M on the board KB. The first mounting program PG1 is a mounting program that mounts components on the board KB in units of individual pieces. This is a mounting program that provides the shortest mounting tact when mounting.

In FIG. 4, the board/individual piece status data KKD stored in the storage unit 5a of the management device 5 includes the aforementioned individual piece status information (coded as “KJJ”), substrate location information (coded as “KLJ”), and board location information (coded as “KLJ”). ”) and mounting target information STJ. As mentioned above, the individual piece state information KJJ includes information on the results of initial failure information acquisition, information on the results of solder inspection, and mounting state inspection during the process of board KB flowing from the upstream side to the downstream side on the mounting line 3. The information on the results of the reflow test and the information on the results of the post-reflow inspection are sequentially added (updated) to the information. Further, as described above, information on whether or not the product can be mounted is also included in the individual piece state information KJJ.

The board location information KLJ is information indicating in which equipment the board KB is located in the process of flowing from the upstream side to the downstream side on the mounting line 3, and the contents change each time the board KB is carried out and carried in. This is information of the nature of The mounting target information STJ is information about the individual pieces set as mounting targets on the board KB carried in by the component mounting apparatus 14. This wearing target information STJ is set by the wearing target setting section 5c, as described later.

The cumulative number of passed individual pieces GPN is data on the cumulative number of individual pieces M for each board KB (referred to as "passed number of pieces Rn") that are determined to be acceptable pieces in the post-reflow inspection. This cumulative number of accepted pieces GPN is counted by the piece part counting section 5d, as will be described later.

The cumulative number of rejected individual pieces DPN is the data of the cumulative number of individual pieces M for each board KB that are determined to be rejected in the post-reflow inspection (referred to as "the number of rejected individual pieces Dn"). It is. This cumulative number of rejected individual pieces DPN is also counted by the individual piece part counting section 5d, as will be described later.

The actual board supply number JKN is the number of boards KB that have been inspected after reflow (referred to as the "produced board number FKN"). The number of produced boards FKN is counted by the board counting section 5e, as will be described later.

The required number of boards NKN is the number of boards KB required to produce the target production number PN of mounted individual pieces. This is the number of boards required. Therefore, normally (in the case where an additional board to be described later is not supplied), the NKNth board KB becomes the final board). The required number of boards NKN is a value that may increase as the number of individual pieces M that are defective during production increases, and using the value of the cumulative number of rejected individual pieces DPN,
NKN=(PN+DPN)/SR (round up to the nearest whole number)
It can be found as

Here, the minimum required number of boards NKN0, which is the initial value of the required number of boards NKN, is calculated by using the above formula, assuming that the cumulative number of rejected individual pieces DPN is DPN=0.
NKN0=PN/SR (round up to the nearest whole number)
It is determined by In an ideal case where all the individual pieces M of all the boards KB supplied to the mounting line 3 are determined to be "acceptable pieces", the board supply device 2 supplies the boards KB with the minimum required number of boards NKN0. It will be enough just to supply it. For example, when the target production number PN is PN=200 (pieces), the number of board pieces SR is SR=9 (pieces), so the minimum required number of boards NKN0 is PN/SR=200/9= From 22.222..., NKN0=23 (sheets).

The number Md of individual pieces to be mounted on the final board is the number of individual pieces M on which components are to be mounted on the final board. Similarly to the required number of boards NKN, the final number Md of individual pieces to be mounted on the board is a value that may increase as the number of individual pieces M that are defective during production increases. The final number of pieces to be mounted on the board Md is determined by the following formula Md=(PN+DPN) using the target production number PN, cumulative number of rejected pieces DPN, and number of pieces SR. )/SR. The initial value Md0 of the number Md of individual pieces to be finally mounted on the board is determined by the remainder of the equation Md0=PN/SR where DPN=0 in the above equation.

The board/individual piece state data generation/updating unit 5b of the management device 5 receives information from each device (initial failure information acquisition device 11, solder supply device 12, solder inspection device 13, multiple component mounting devices 14) constituting the mounting line 3. This data is based on the individual piece state information KJJ and board location information KLJ sent from the component mounting device 14, mounting state inspection device 15, reflow device 16, and post-reflow inspection device 17. The aforementioned substrate/individual piece state data KKD is created and updated, and is stored in the storage section 5a.

In this embodiment, the individual piece part state information KJJ included in the board/individual part state data KKD is stored in the management device 5 in the manner shown in FIGS. 3(a), (b), (c) and (d). According to the procedure described, each individual piece M is managed by marking it with a "○" mark, a "-" mark, a "+" mark, an "x" mark, and an "*" mark. Here, the "-" mark indicates an initial defective piece part, the "+" mark indicates a soldering defective piece part, the "x" mark indicates a poorly installed piece part, and the "*" mark indicates a defective piece part after reflow. In the final board, there may be individual pieces M that are not marked with "○" mark, "-" mark, "+" mark, "x" mark, or "*" mark. is an individual chip part M that can be mounted (that is, although the solder inspection result on the final board is determined to be good by the solder inspection device 13), it has not been set as a mounting target ("unmounted individual chip"). ), and can be a candidate for "additional attachment target", which will be described later. For individual pieces that are determined to be defective in each inspection, defects are indicated without distinction as "-", "+", "x", or "*" marks for each cause of the defect. It may also be possible to manage it by adding a single mark (for example, an "x" mark).

The mounting target setting unit 5c determines all or part (of the plurality of individual pieces M of the board KB) carried in by the component mounting apparatus 14 (on which the solder inspection apparatus 13 has finished the solder inspection work) of the plurality of individual pieces M (number of individual pieces SR of the board). However, a mounting target setting operation is performed in which individual piece parts M) with no initial defects and good solder inspection results are set as mounting targets.

In the mounting target setting work, first, the mounting target setting unit 5c learns from the management device 5 the mountable individual pieces on the board KB carried in by the component mounting device 14. This information on the mountable individual pieces is included in the board/individual piece state data KKD that the management device 5 receives from the solder inspection device 13. If the board KB carried in by the component mounting device 14 is not the final board, the mounting target setting unit 5c selects all of the grasped mountable individual pieces (see individual pieces M shown in dark color in FIG. 3(b)). ) to be installed.

On the other hand, if the board KB carried in is the final board, there is no need to set all of the identified mountable individual parts as mounting targets, and the target production number PN of mounted individual parts will be produced. , only a part (of the wearable individual pieces) is set as a mounting target (details will be described later). Information on the individual pieces M set as the mounting targets by the mounting target setting unit 5c (the above-mentioned mounting target information STJ) is stored in the storage unit 5a as part of the board/individual part status data KKD.

The flowchart in FIG. 5 shows the flow of a mounting target setting process (wearing target setting step) performed by the mounting target setting unit 5c of the management device 5. As shown in this flowchart, when a board KB (a board KB for which solder inspection has been completed) is carried in from the solder inspection device 13, the mounting target setting unit 5c collects related information such as board/piece state data KKD for the board KB. By receiving the necessary information (step ST1), it is determined whether the loaded board KB is the final board (step ST2). As a result, if the board KB is not the final board, information on whether or not the board KB can be mounted is obtained based on the board/piece state data KKD obtained from the management device 5 (step ST3). All individual pieces M (individual pieces M with no initial defects and good soldering results) excluding the individual pieces that cannot be attached are set as attachment targets (step ST4).

On the other hand, when the mounting target setting unit 5c determines that the loaded board KB is the final board in step ST2, the mounting target setting unit 5c transmits each information of the final board mounting target number Md and the number of board individual pieces SR to the management device 5c. (step ST5), and obtains the number of uninstallable individual pieces on the board KB (referred to as "number of uninstallable pieces Fn") based on the board/individual part state data KKD acquired in step ST1. (Step ST6). Then, whether or not the number of board pieces SR minus the number of pieces Fn that cannot be mounted (that is, the number of pieces that can be mounted) exceeds the final number Md of pieces to be mounted on the board, that is, the formula SR-Fn >Md is satisfied (step ST7). As a result, if the formula SR-Fn> is not satisfied (if the number of mountable individual pieces is the same as the number Md of individual pieces to be mounted on the final board), then the individual pieces M excluding the non-mountable pieces (that is, the attachable individual pieces) are all set as attachment targets (step ST8).

On the other hand, when the mounting target setting unit 5c determines in step ST7 that the formula SR-Fn>Md is satisfied (when the number Md of individual pieces to be mounted on the final board is less than the number of individual pieces that can be mounted) ), first, the quality of the solder is determined (ranked) for all the mountable individual pieces of the final board (step ST9). Then, the individual pieces M having a high degree of solder condition (higher rank) are prioritized and set as attachment targets (step ST10).

In step ST9, for example, as shown in FIG. If the individual piece M) is a wearable piece, rank the seven attachable pieces from "1" to "7" in descending order of the solder condition. (Figure 6(b)). This ranking can be such that, for example, the closer the solder supply device 12 is to the positioning reference point of the stencil 12M used in clean printing and the board KB, the better the solder condition is (the higher the rank). Then, in step ST10, priority is given to the one with the highest solder condition (rank) from among the ranked seven attachable pieces (alignment criteria for the stencil 12M and the board KB). Priority is given to the individual piece M that is closer to the point), and three individual piece parts M (coded as M4, M5, and M6) are set as attachment targets.

FIG. 6(c) shows in dark color the three individual pieces M (the individual pieces M with reference numerals M4, M5, and M6) that are thus set to be mounted on the final board. In addition, in FIG. 6(b), the individual pieces M whose ranks are "4", "5", "6", and "7" (the individual pieces M whose codes are M1, M3, M7, and M9) are as follows. This corresponds to an individual piece part M that can be mounted but was not set as a mounting target (despite the solder inspection result being determined to be good by the solder inspection device 13 on the final board), and is not subject to "additional mounting" as described later. Can be a candidate for "target".

As described above, in the present embodiment, the mounting target setting unit 5c selects one of the plurality of individual pieces M (number of individual board pieces SR) of the final board supplied as the board KB on which the component is finally mounted. When setting only a part as a mounting target, the quality of the solder inspected by the solder inspection device 13 is determined, and priority is given to the individual pieces M with the highest quality (simply, The solder supply device 12 sets the stencil 12M used in screen printing and the individual piece closer to the positioning reference point of the board KB as the mounting target first.

The individual piece part counting unit 5d counts the number of individual pieces M determined to be acceptable individual pieces in the post-reflow inspection (number of accepted individual pieces Rn) for each board KB. Then, the cumulative number of passing pieces Rn counted for each board KB (the above-mentioned cumulative number of passing pieces GPN) is stored in the storage unit 5a (FIG. 4). In the example of FIG. 3(d), the number of accepted pieces Rn is Rn=4.

Further, the individual piece part counting unit 5d counts the number of individual pieces M that are determined to be rejected in the post-reflow inspection (the above-mentioned number of rejected individual pieces Dn) for each board KB. Then, the cumulative number of rejected pieces Dn counted for each board KB (cumulative number of rejected pieces DPN) is stored in the storage unit 5a (FIG. 4). In the example of FIG. 3(d), the number of rejected pieces Dn is Dn=5.

In FIG. 4, the board counting unit 5e counts the number of boards KB that the board supply device 2 has supplied (that is, has already been supplied) to the mounting line 3. Then, the obtained number of substrates KB (the above-mentioned number of actual substrates supplied JKN) is stored in the storage section 5a.

The substrate supply processing unit 5f outputs a substrate supply command that instructs the substrate supply device 2 to supply the substrate KB. The board supply device 2 is configured to supply one board KB to the mounting line 3 each time a board supply command is output from the management device 5. A substrate supply command is output to the substrate supply device 2 until the substrate is supplied from the device 2.

In FIG. 4, the final substrate processing section 5g processes the final substrate. The final substrate processing section 5g includes a substrate number/piece number calculation section 5h, a recovery processing section 5m, and a required number of substrate increase processing section 5n. The number of boards/pieces calculation unit 5h calculates the number of boards KB required to produce the target production number PN of mounted pieces (the above-mentioned required number of boards NKN) and the number of parts to be mounted on the final board. The number of pieces M (the above-mentioned number Md of pieces to be finally mounted on the board) is calculated and stored in the storage unit 5a.

The recovery processing unit 5m performs recovery processing under certain conditions when at least one poorly mounted individual piece is detected on the final board at the time when the mounting state inspection for the final board is completed. The recovery process is a process in which, when at least one poorly mounted individual piece is detected on the final board, the final board is sent back to the top of the component mounting device 14 to remount components on the final board. be.

The required number-of-boards increase processing unit 5n performs processing to increase the required number of boards NKN when it is detected in the post-reflow inspection that the final board includes a defective piece after reflow. This allows the board supply device 2 to continue supplying the boards KB, and it is possible to compensate for the shortage of individual mounting pieces that occurs in the final board.

FIG. 7 is a flowchart showing the flow of substrate supply processing performed by the substrate supply processing section 5f of the management device 5. As shown in this flowchart, the substrate supply processing section 5f determines whether a request for supply of the substrate KB has been made (step ST11). Here, the solder supply device 12 is configured to request the board KB except when it is performing solder supply work (that is, screen printing work) to the board KB, and the board supply processing section 5f is configured to request the board KB. Based on whether the supply device 12 requests the substrate KB, it is determined whether a request to supply the substrate KB has been made.

If the board supply processing unit 5f determines in step ST11 that a request to supply the board KB has been made, the board supply processing unit 5f reads out and acquires the required number of boards NKN and the actual board supply number JKN from the storage unit 5a (step ST11). ST12), it is determined whether the final substrate has been supplied or not based on whether the formula NKN-JKN=0 is satisfied (step ST13). As a result, if the final board has not been supplied yet (NKN-JKN≠0), then the formula NKN-JKN=1 is satisfied to determine whether the board KB immediately before the final board has been supplied. It is determined whether or not (step ST14).

If the substrate supply processing unit 5f determines in step ST14 that the substrate KB immediately before the final substrate has not been supplied yet (NKN-JKN≠0), it outputs a substrate supply command to the substrate supply device 2. (Step ST15). On the other hand, in step ST14, if it is determined that the board KB immediately before the final board has been supplied (NKN-JKN=0), all processing (processing up to inspection after reflow) is performed on the board KB immediately before the final board. ) has been completed (step ST16). As a result, if all the processing has not been completed for the board KB one before the final board, wait until the processing up to the post-reflow inspection is completed for the board one before the final board, and then If all processes have been completed for the previous substrate KB, a substrate supply command is output to the substrate supply device 2 (step ST15).

In this way, in step ST16, the reason why the final board is not supplied to the mounting line 3 (standby) until all processing is completed for the board KB immediately before the final board is because the board KB immediately before the final board is not supplied to the mounting line 3. This is because unless the results of the post-reflow inspection are known, the number Md of individual pieces to be mounted on the final board cannot be determined, and the number of individual pieces M to be set to be mounted on the final board cannot be determined.

After outputting the board supply command to the board supply device 2 in step ST15, the board supply processing unit 5f acquires the target production number PN and the cumulative number of accepted pieces GPN stored in the storage unit 5a (step ST17). , depending on whether the formula PN-GPN=0 is satisfied, whether or not the target production number PN of mounted pieces has been produced (whether the cumulative number of accepted pieces GPN has reached the target production number PN) is determined (step ST18). Further, even when it is determined in step ST11 that the solder supply device 12 does not request the board KB, the process proceeds from step ST17 to step ST18. As a result of the determination in step ST18, if the formula PN-GPN=0 is not satisfied (PN-GPN≠0), the process returns to step ST11 and it is determined again whether a request for supply of the board KB has been made, and the formula PN-GPN=0 is not satisfied (PN-GPN≠0). If GPN=0 is satisfied, the series of processing ends.

Here, control of the component mounting device 14 will be explained. In FIG. 8, the component placement device 14 includes a placement device control section 14d, which includes a placement availability information acquisition section 21, a first working time calculation section 22, and a second placement program creation section 23. , a second working time calculation section 24 and a component mounting control section 25.

When the board KB is carried in, the mountability information acquisition section 21 acquires the mountability information by inquiring the management device 5 and receiving the board/piece state data KKD stored in the storage section 5a.

The first working time calculation unit 22 acquires the first wearing program PG1 from the management device 5, and also queries the management device 5 to acquire the wearing target information STJ. Then, a numerical simulation is performed when the acquired first mounting program PG1 is applied to the individual piece part M (referred to as the "installation target individual piece part") set as the mounting target obtained based on the mounting target information STJ. , the working time obtained thereby (ie, the estimated working time) is calculated as the "first working time".

The second mounting program creating unit 23 creates a mounting program (referred to as a "second mounting program") for mounting a component on each individual piece M by regarding the plurality of individual pieces M as one collective board. The second mounting program creation unit 23 creates a second mounting program using the first mounting program PG1 and the mounting target information STJ.

The second work time calculation section 24 performs a numerical simulation when the second mounting program created by the second mounting program creation section 23 is applied to the mounting target individual piece obtained based on the mounting target information STJ. and the work time obtained thereby (i.e., the estimated work time) is calculated as the "second work time".

The component mounting control unit 25 compares the first working time calculated by the first working time calculating unit 22 and the second working time calculated by the second working time calculating unit 24. If the first working time is shorter, the first mounting program PG1 is applied to mount the component on the individual piece to be mounted, and if the second working time is shorter, the second mounting program PG1 is applied. A component mounting operation is performed in which the component is mounted on the individual piece to be mounted by applying the method. That is, between the first mounting program PG1 and the second mounting program, the mounting program that takes less time (lower mounting tact) is applied to the individual pieces to be mounted (the individual pieces set to be mounted). A component mounting operation is performed to mount the component on the part M).

The flowchart in FIG. 9 shows the flow of the operation (component mounting process) of the component mounting device 14. As shown in FIG. 9, when the component mounting device 14 carries in the board KB from the upstream solder inspection device 13 (step ST21), the mounting device control section 14d imports necessary information from the storage section 5a of the management device 5. Acquire (step ST22). Here, the necessary information includes data such as the number of individual board pieces SR, the first mounting program PG1, and the state data KKD of the board and individual pieces.

After acquiring the necessary information in step ST22, the component mounting device 14 waits for the mounting target setting section 5c of the management device 5 to execute the above-described mounting target setting process (FIG. 5). Then, when the mounting target setting process performed by the mounting target setting unit 5c is completed and the resulting mounting target information STJ (data of the individual piece M set as the mounting target) is stored in the storage unit 5a, the mounting The device control unit 14d inquires of the management device 5 and acquires information on the individual pieces to be installed (installation target information STJ) stored in the storage unit 5a (step ST23).

When the component mounting device 14 acquires the mounting target information STJ in step ST23, the first work time calculation unit 22 converts the first mounting program PG1 into the mounting target individual piece part (the individual piece part set as the mounting target). M) to calculate the first working time T1 (step ST24; first working time calculation step). Then, after creating a second mounting program in the second mounting program creation section 23 (step ST25), the second working time calculation section 24 applies the second mounting program to the individual pieces to be mounted. A second working time T2 is calculated (step ST26. Second working time calculation step).

After calculating the first working time T1 and the second working time T2 as described above, the component mounting device 14 compares the first working time T1 and the second working time T2 (step ST27). If the first working time T1 is shorter than the second working time, the first program is applied to attach the parts to the individual pieces M set as the mounting targets (the individual pieces to be mounted). is attached (step ST28). On the other hand, if the second working time T2 is shorter than the first working time, the second mounting program is applied to the individual piece part M set as the mounting target (the individual piece part to be mounted). Components are mounted on (step ST29).

When the component mounting device 14 places a component on the individual piece M set as the mounting target, the component mounting control section 25 operates the component supply section 14b and the mounting head 14c to cause the component supply section 14b to supply the component. At the same time, the mounting head 14c is moved above the component supply section 14b. After the component supplied by the component supply section 14b is picked up by the mounting head 14c, the mounting head 14c is moved above the board KB to mount the component onto the individual piece to be mounted on the board KB. After the component mounting device 14 has mounted the component on the individual piece to be mounted in step ST28 or step ST29, it carries out the board KB to the mounting state inspection device 15 on the downstream side (step ST30).

As described above, in the mounting system 1 (the mounting method using the mounting system 1) according to the present embodiment, the estimated working time (the first 1 (step ST24), and calculates the estimated working time (T1) by applying a second mounting program that regards a plurality of individual pieces as one collective board and mounts components to each individual piece. The second working time T2) is calculated (step ST26). Then, the first working time T1 and the second working time T2 are compared (step ST27), and if the first working time T1 is shorter, the first working time T1 is applied and set as the wearing target. The component is mounted on the individual piece M that has been set (step ST28), and if the second working time T2 is shorter, the second mounting program is applied to mount the component on the individual piece that has been set as the mounting target. (step ST29). Therefore, parts can be mounted using an optimal mounting program according to the number, arrangement, etc. of individual pieces M set as mounting targets.

Here, in the above-mentioned component mounting process, an individual piece M that has no initial failure and has a good solder inspection result (that is, an individual piece M that is determined not to have an initial failure by the initial failure information acquisition device 11 and has a good solder inspection result) Components are mounted only on the individual pieces M for which the solder condition was determined to be good, and only on the individual pieces M to be attached. For this reason, if the uninstallable piece part that is known to be ultimately rejected (the piece part M with an initial defect or the piece part M with a defective solder inspection result) is Parts are not mounted and parts are less likely to be wasted.

FIG. 10 shows an example of changes in the values of the required number of boards NKN, the number of actual boards supplied JKN, the number of rejected pieces Dn, the cumulative number of rejected pieces DPN, and the number Md of pieces to be finally mounted on the board. In the example shown in FIG. 10, the target production number PN is 200 (pieces), and the number of individual board pieces SR is SR=9 (pieces). Therefore, the minimum required number of boards NKN0 is NKN0=23 (pieces), and the initial value Md0 of the number Md of pieces to be finally mounted on the board is Md0=2 (pieces). In this example, when the actual board supply number JKN reaches the minimum required number of boards NKN0 reaches NKN0 = 23 (pieces), the cumulative number of rejected pieces DPN is DPN = 12 (pieces), and using the above formula, (PN+DPN)/SR=(200+12)/9=23 remainder 5
Therefore, the required number of boards NKN is 24 (pieces), and the number Md of pieces to be finally mounted on the board is Md=5 (pieces).

The flowchart in FIG. 11 shows the procedure of recovery processing for the final substrate by the recovery processing section 5m. As shown in this flowchart, the recovery processing unit 5m first determines whether or not a poorly mounted individual piece has been detected in the final board for which the mounting state inspection has been completed (step ST31). Then, if no poorly mounted individual pieces are detected on the board KB, the final board is allowed to be carried out to the reflow apparatus 16 (step ST32). As a result, the final board undergoes solder reflow in the reflow device 16, and if no defective piece is detected in the subsequent post-solder reflow inspection, production ends.

On the other hand, if the recovery processing unit 5m determines in step ST31 that a poorly mounted individual piece has been detected on the board KB, the recovery processing unit 5m calculates the number of missing mounted pieces for the final board. The calculation is made based on the number of poorly installed pieces detected in (step ST33), and then it is determined whether recovery is possible (step ST34). The determination in step ST34 is made based on whether the number of unattached individual pieces that the board KB has is greater than or equal to the number of improperly attached individual pieces that have occurred on the final board. Specifically, if the number of unattached individual pieces is greater than or equal to the number of defective individual pieces, it is determined that recovery is possible, and the number of unattached individual pieces is greater than the number of defective individual pieces. If the number is less than the number, it is determined that recovery is impossible.

If the recovery processing unit 5m determines that recovery is not possible in step ST34, in order to supply a new substrate KB from the substrate supply device 2 after the last substrate, the recovery processing unit 5m increases the required number of substrates NKN by one and sets NKN. =NKN+1 (step ST35), and then carries out the substrate KB to the reflow apparatus 16 (step ST32). As a result, the final board undergoes solder reflow in the reflow device 16, but a new board KB following the final board is supplied from the board supply device 2 as an additional board (additional board when recovery is impossible), and the new board KB is , components corresponding to the number of missing mounting pieces are mounted.

Here, the number of individual pieces M to be mounted on the additional board when recovery is impossible is determined by the cumulative number of passed individual pieces counted by the individual piece part counting unit 5d at the time when the post-reflow inspection for the final board is completed. (accumulated number of accepted pieces GPN) and a preset target production number PN (PN - GPN, which is the difference between the target production number PN and the cumulative number of accepted pieces GPN) be able to. Alternatively, the number of individual pieces M set to be mounted on the final board (i.e., the number Md of individual pieces to be mounted on the final board) and the number of passing individual pieces counted by the individual piece part counting unit 5d on the final board (passed It can also be determined as the difference from the number of individual pieces (Rn).

On the other hand, if the recovery processing unit 5m determines in step ST34 that recovery is possible, it additionally sets the attachment target to the unattached individual piece (step ST36). At this time, the number of objects to be mounted set in the unmounted individual chip parts is the number of the missing mounted chip parts. After the recovery processing unit 5m has additionally set the mounting target to the unmounted individual piece portion, it sends the final board back to the top of the component mounting device 14 (step ST37). The board KB is sent back in step ST37 by moving the board KB transport device (not shown) of the mounting state inspection device 15 and the board transport section 14a of the component mounting device 14 in opposite directions (the board KB is on the downstream side). This is done by operating the engine so that it travels upstream from the engine.

When the recovery processing unit 5m sends the final board back to the top of the component mounting device 14 in step ST37, the component mounting device 14 mounts the component on the individual piece M additionally set as a mounting target. As a result, the number of components to compensate for the missing mounting individual pieces is mounted on the individual pieces M that are additionally set as mounting targets on the final board.

The component mounting device 14 carries out the final board to the mounting state inspection device 15 after mounting the component on the individual piece M additionally set as the mounting target. The mounting state inspection device 15 inspects the mounting state of the individual pieces M on which the components have been mounted by the component mounting device 14, and carries them out. The recovery processing unit 5m also performs recovery on the board KB carried out from the mounting state inspection device 15, if necessary.

FIG. 12(a) shows the final board at the time when the post-reflow inspection is completed. In FIG. 12(a), out of the seven attachable individual pieces shown in dark colors, parts are attached to four individual pieces M (individual pieces M with codes M1, M3, M4, and M5), Of these, two individual pieces (coded M1, M5) were judged to have good mounting conditions after reflow (marked with "○"), but the remaining two individual pieces M (coded M3, M4) In this case, the mounting condition of the part after reflow is determined to be defective (marked with an "x").

When the final board is in this situation, there are two defective chip parts after reflow (single parts M with codes M3 and M4), while there are three uninstalled chip parts (single parts M with codes M3 and M4). Since it is an individual piece part M) of M6, M7, and M9, recovery is possible. Therefore, for example, among the three unmounted individual chip parts with codes M6, M7, and M9, two unmounted individual chip parts with codes M6 and M7 are set as additional mounting targets (additional mounting targets). be able to. In FIG. 12(b), the two unmounted individual chip parts marked with "◎" (individual chip parts M with codes M6 and M7) indicate the individual chip parts M set as additional attachment targets.

In this way, in the mounting system 1 according to the present embodiment, the component mounting device 14 detects, on the final board on which the component is finally mounted, the individual piece portion that is determined to be in a poor mounting state by the mounting state inspection device 15. M (individual chip part with poor mounting), and the solder test result was determined to be good by the solder inspection device 13 on the final board, but the component was not mounted (individual chip part M (uninstalled individual chip part)) exists and the number of unattached individual pieces is greater than or equal to the number of poorly attached individual pieces, it is determined that recovery is possible (step ST34). If it is determined that recovery is possible, the final board is sent back from the mounting state inspection device 15 to the component mounting device 14 (step ST37), and components are mounted on the unmounted individual pieces. There is.

The flowchart in FIG. 13 shows the flow of the process to increase the number of required boards performed by the required number of board increase processing unit 5n of the management device 5. As shown in this flowchart, the required number of substrate increase processing unit 5n determines whether the substrate KB processed by the post-reflow inspection device 17 is the final substrate (step ST41). As a result, if the substrate KB processed by the post-reflow inspection device 17 is not the final substrate, the process ends (as a result, production continues), but if the substrate KB processed by the post-reflow inspection device 17 is not the final substrate. If so, it is determined whether or not the final board includes a defective piece after reflow (step ST42).

In step ST42, if the final board does not contain any defective chip parts after reflow, the required number of board increase processing unit 5n determines that in the final board, the number of accepted chip parts Rn has reached the target production number PN. (Rn=PN), so the process ends (as a result, production ends). On the other hand, in step ST42, if the final board contains defective pieces after reflow, it means that in the final board, the number of accepted pieces Rn did not reach the target production number PN (Rn<PN). . Therefore, in order to supply a new board KB from the board supply device 2 and to additionally produce the missing mounting pieces, a process is performed to increase the required number of boards NKN by one (NKN=NKN+1). (Step ST43).

As a result, even in a situation where the final substrate is supplied and NKN-JKN=0 in step ST13 of the flowchart in FIG. 7, and the subsequent supply of substrates KB is stopped, step ST43 in the flowchart in FIG. As the required number of boards NKN is increased by one (NKN=NKN+1), NKN-JKN=1, and the process proceeds from step ST14 to step ST15, where the board KB is additionally supplied (additional board is supplied). Become. Therefore, it is possible to perform additional production to compensate for the shortage of mounting individual pieces on the final board by supplying a new board KB (additional board).

FIG. 14 shows an example of the transition of the individual piece state information on the final board and the transition of the individual piece part state information on the additional board. In this example, the final board has a post-reflow defective piece in the post-reflow inspection, and an additional board is required ("Y" in step ST42 of the flowchart in FIG. 13). On the other hand, the additional board has no defective individual piece parts or defective individual piece parts after reflow ("N" in step ST42 of the flowchart in FIG. 13), and production is immediately terminated after the post-reflow inspection.

As described above, in the mounting system 1 according to the present embodiment, the management device 5 performs a post-reflow inspection on the final board supplied from the board supply device 2 as the board KB on which a component is finally mounted, to determine whether the solder reflow If a defective individual part M is detected after reflow, which is an individual part M with a defective component mounting state, a new board KB is additionally supplied from the board supply device 2 to the mounting line 3 as an additional board. It has become. Therefore, if there is an individual piece part that is determined to be defective in the post-reflow inspection (defective individual piece part after reflow), mounted individual piece parts to supplement the shortage are automatically produced.

As described above, in the mounting system 1 (or mounting method) of the present embodiment, the post-reflow inspection detects defects in the mounting state of the components after solder reflow on the final board on which the components are finally mounted. If a piece M (defective individual piece after reflow) is detected, a new board KB is additionally supplied from the board supply device 2 to the mounting line 3 as an additional board, so it is determined to be defective in the post-reflow inspection. Even if there is a defective chip part (defective chip part after reflow), mounting chip parts to replenish this part are automatically produced. Therefore, the work burden on the worker is greatly reduced and productivity is improved.

Although the embodiments of the present invention have been described so far, the present invention is not limited to the above-described embodiments, and various modifications and the like are possible. For example, in the above embodiment, the component mounting device 14 and the mounting state inspection device 15 are separate devices, but the component mounting device 14 also has the function of the mounting state inspection device 15, and If the configuration is such that the mounting state can be inspected at the same position where the component mounting work has been performed, it is not necessarily necessary to send the board KB back upstream, and after the mounting state inspection, the component mounting operation can be performed again. That's enough.

Further, in the above-described embodiment, the component mounting device 14 transmits the information necessary for the component mounting device 14 to apply the first mounting program and the second mounting program to the individual piece M set as the mounting target. The information is acquired from the management device 5, which is an external device seen from the component mounting device 14, but the necessary information can be stored or generated by the component mounting device 14 itself, without having to take in information from an external device. , the component mounting device 14 may be able to perform the mounting program selection work including the creation of the second mounting program by itself. In this case, the component mounting device 14 uses the mounting target setting unit 5c included in the management device 5, as well as the data of the individual piece M set as the mounting target by the first mounting program PG1 and the mounting target setting unit 5c. The configuration includes a functional section of a storage section 5a that stores .

A mounting system and mounting system that can reduce the work burden on workers by automatically producing mounting individual parts to supplement the missing parts when there are individual parts determined to be defective in the inspection after solder reflow. provide a method.

1 Mounting system 2 Board supply device (board supply unit)
3 Mounting line 5 Management device 5d Individual piece counting section 11 Initial failure information acquisition device (initial failure information acquisition section)
12 Solder supply device (solder supply section)
13 Solder inspection equipment (solder inspection department)
14 Component mounting device (component mounting section)
16 Reflow equipment (reflow part)
17 Post-reflow inspection device (post-reflow inspection section)
PN Target production quantity GPN Cumulative number of passed pieces (cumulative number of passed pieces)
KB Board M Individual piece

Claims (4)

a board supply unit that supplies a board having a plurality of individual pieces; a solder supply unit that supplies solder to each of the plurality of individual pieces of the board supplied from the board supply unit; solder is supplied by the solder supply unit; A component mounting section that attaches components to the individual pieces, a reflow section that solders the components to the individual pieces by heating the board with the components mounted on the individual pieces and performing solder reflow, and the soldering by the reflow section. a mounting line including a post-reflow inspection section that performs a post-reflow inspection to inspect whether the mounting state of the component is good after the reflow;
In the final board supplied from the board supply unit as the board on which components are finally mounted, the post-reflow inspection shows that the mounting state of the components after the solder reflow is a defective individual chip after reflow. a management device that causes the board supply unit to supply a new board as an additional board to the mounting line if the board is detected;
The mounting line is
an initial failure information acquisition unit that acquires initial failure information of each individual piece of the board supplied from the board supply unit;
a solder inspection unit that inspects the state of solder supplied to each individual piece of the board from which the initial failure information has been acquired;
The component mounting section selects, among the individual pieces of the board, the individual pieces for which the initial failure information acquisition section has determined that there are no initial defects and the solder inspection section has determined that the solder condition is good. A mounting system that attaches parts only to the The management device further comprises: an individual piece part counting unit that counts a cumulative number of accepted individual piece parts that are individual part parts for which the post-reflow inspection part determines that the mounting state of the component after the solder reflow is good; At the time when the post-reflow inspection of the final board by the post-reflow inspection section is completed, the cumulative number of accepted pieces counted by the piece count section and the preset target production number are determined. 2. The mounting system according to claim 1, wherein the number of individual pieces on the additional board to which components are mounted is set based on the number of individual pieces on the additional board. a board supply unit that supplies a board having a plurality of individual pieces; a solder supply unit that supplies solder to each of the plurality of individual pieces of the board supplied from the board supply unit; solder is supplied by the solder supply unit; A component mounting section that attaches components to the individual pieces, a reflow section that solders the components to the individual pieces by heating the board with the components mounted on the individual pieces and performing solder reflow, and the soldering by the reflow section. A mounting method using a mounting line including a post-reflow inspection section that performs a post-reflow inspection to inspect the quality of the mounted state of components after reflow,
In the final board supplied from the board supply unit as a board on which components are finally mounted, the post-reflow inspection shows that the mounting state of the components after the solder reflow is a defective individual chip. If a new board is detected, a new board is supplied as an additional board from the board supply unit to the mounting line,
The mounting line inspects the state of the solder supplied to each individual piece of the board after acquiring initial failure information of each individual piece of the board supplied from the board supply unit, A mounting method in which components are mounted only on individual pieces of the board that are judged to have no initial defects based on the acquired initial failure information and in which the supplied solder is judged to be in good condition. . The post-reflow inspection section counts the cumulative number of passing individual pieces that are judged to be in good condition after the solder reflow, and the post-reflow inspection section counts the cumulative number of accepted pieces for the final board. At the time when the post-reflow inspection is completed, the number of individual pieces to be mounted on the additional board is set based on the cumulative number of counted acceptable pieces and a preset target production number. The mounting method according to claim 3 .

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