JPS60111784A - Optional stowing and calling device - Google Patents

Abstract

PURPOSE:To send surely and quickly desired jigs to the next production stage with simple constitution by introducing the information on the fresh jigs into a storage device and rewriting the information. CONSTITUTION:If there is a need for bringing the jig III corresponding to the model to be produced next to the position B of a housing space, the signal of the jig which exists at present in the position B transmitted from the holding parts B and C of a register 124 and the signal from a switch 102 for selecting the model to be produced next are compared in a comparator 120. Since the jig I exists in the position B, a dissidence signal is emitted to a ring counter 132. A sequence control circuit 138 feeds a signal to a multiplexer 118 to indicate that the jig I arrives at the position C. The multiplexer 118 rewrites the information in the holding part B of the register 124. The ring counter 132 energizes the circuit 138 to move the jig I . When the jig III arrives at the position B, a coincidence signal is sent from the comparator 12 to an AND gate 128 to feed the jig III to the working position.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an arbitrary storage/retrieval device, and more particularly, the present invention relates to an arbitrary storage/retrieval device, and more particularly, it is possible to store work-related tools such as welding jigs that are taken out and put in relatively frequently without specifying a storage location within the device. , relates to an arbitrary storage and retrieval device that can be automatically replaced.

When replacing a relatively large and heavy item such as a welding jig to match the production model, conventionally, a model discrimination sensor is installed in the conveyance device for the jig, etc. Methods have been adopted, such as identifying the model based on the position of the machine and taking out the desired item, or providing a dedicated carriage/nozzle for each type of jig and using the carriage to identify the specific model and taking out the item. However,
In the former method, the mechanism itself that incorporates the various sensors is complicated and expensive, and also has a structural problem, for example, when using a contact type detector such as a limit switch for sensing, it is difficult to smoothly move the jig itself. is obstructed. Further, when the detector is composed of a non-contact type phototube or the like, there is a drawback that accurate sensing cannot be achieved unless the distance between the detector and the detected part of the jig is constant. Furthermore, in the latter case, there were drawbacks such as the overall size of the device becoming extremely large and the replacement of jigs and the like taking too much time.

° Therefore, as a result of intensive research and ingenuity, the inventor of the present invention installed a storage with multiple identical storage spaces near the machine tool (7. Information regarding the new jig is stored in the storage device in relation to each of the storage spaces, and when the jig is taken out for work and a new jig is stored in the storage space, information regarding the new jig is stored in the storage space. By introducing the jig into a storage device and rewriting the information, the relationship between the storage space and the jig can be relatively established, and the jig can be put in and taken out, and the above problems can be solved at once. It turns out.

The present invention has been made to overcome the above-mentioned problems, and includes a vertical moving means and a horizontal moving means disposed in a storage having a plurality of storage spaces, and a vertical moving means and a horizontal moving means disposed in a storage having a plurality of storage spaces. a control circuit for energizing the directional movement means; a storage space selection means for specifying the respective storage spaces; an article selection means for selecting a plurality of articles to be placed in these storage spaces; and the storage space selection means. and storage means for storing that a predetermined article is stored in a predetermined storage space by energization of the article selection means, and energizes the article selection means and the storage space selection means and stores the predetermined article in a predetermined storage space based on these signals. Information is introduced into the storage means, and new information regarding the currently selected predetermined article and predetermined storage space is compared with old information about the predetermined article in the predetermined storage space that has already been stored, and based on the comparison result, the control circuit energizes the vertical movement means and the horizontal movement means under the control of to transfer a predetermined article related to the old information from a predetermined storage space, and transfer a predetermined article related to the new information to the predetermined space after the transfer; The present invention is characterized in that information about a new article stored in the predetermined space is rewritten with old information stored in the storage means.

Next, regarding the arbitrary storage/retrieval device according to the present invention, an automatic exchange device for welding jigs will be cited as a preferred embodiment, and will be described in detail below with reference to the accompanying drawings.

In FIG. 1, reference numeral 10 indicates a base on which a welding machine main body 12 is fixed. A pair of welding machine bodies 12 are arranged on the base 10 with a predetermined distance between them, and a workpiece to be welded, for example, an automobile body 14 in this embodiment, is conveyed by a conveyance means 16 as appropriate. Each welding machine body 12 includes support members 18.18 erected thereon, and a rod 20 is rotatably bridged over the support members 18.18. Note that a holding stand 22 is fixed to this rod 20.

Therefore, by mounting and fixing the jig (2) on the holding table 22 and energizing the link mechanism (not shown), this holding table 22 can be moved to the first
By rotating in the direction of the arrow in the figure, the jig ■ is attached to the automobile body 14.
It will be used for welding. Therefore, in the relationship between the welding machine main body and the jig configured as described above, in the present invention, in particular, a storage 24 for accommodating a large number of jig groups in close proximity to the welding machine main body 12 is provided. (See Figure 2).

As can be understood from the figure, the storage 24 is arranged so as to straddle the body transport path, and has a large number of columns 26 erected at predetermined distances in front, rear, left and right. A horizontal member 28 is bridged between the body conveyance path in parallel or in a direction crossing the traveling direction of the body conveyance path. At this time, it goes without saying that the horizontal member 28- is not disposed at a position corresponding to the passage of the body 14. In this case, a plate-shaped carriage 30 is disposed in each space defined by the pillar 26 and the horizontal member 28 disposed as described above (see FIG. 3). In the embodiment of the present invention, as can be easily understood from FIG. 2, there are 11 spaces for storing jigs, so 11 carriages 30 are also included.

Therefore, in order to move the carriage 30 vertically and horizontally, in this apparatus, the vertical moving means 3
2 and horizontal movement means 34 are provided. As can be seen from FIG.
6, and an elevator frame 42 that engages with the chain 38 and moves vertically on a guide rail 40 fixed to the support column 26. Therefore, the sprocket 3 is driven by an electric motor (not shown).
6, the chain 38 moves up or down the lift frame 42, and the hook member 44 disposed on the lift frame 42 engages with the carriage 3o.
o will also perform a rising or falling motion.

On the other hand, the horizontal movement means 34 is also provided to move the top of the storage 24 in a direction perpendicular to the vehicle body conveyance path as shown in FIG. Support frame 4 with
A storage space related to 8 is also provided. This horizontal movement means moves parallel to the automobile body transport path and is used to carry out a predetermined jig to the welding machine main body 12 side. This horizontal movement means 34 includes a chain 50 that extends horizontally, a sprocket 52 that engages with the chain 5o, a hook member 54 that is engaged with the end of the chain 50, and a conveyor bar that engages with the hook member 54. It basically consists of 56. In other words, when the sprocket 52 rotates via an electric motor (not shown), the chain 50 is also driven;
As the hook member 54 moves, the hook member 54 also moves. Therefore, if the conveyance bar 56 and the hook member 54 are engaged,
The welding jig (2) placed on the transport bar 56 moves in the horizontal direction and is sent out to the welding machine main body 12 side via the support frame 48.

Therefore, the control circuit of the arbitrary storage and retrieval apparatus constructed as described above will be explained in detail below with reference to FIG. 4 and subsequent figures.

First, on the operation panel 100, a next production model selection switch 102, a starting button 104, and a model set button 106 are arranged in the left column, and a model number selection switch 108, a right seat selection switch 110, and a left seat button are arranged in the right column. The selection switches 112 are arranged vertically in this order. In addition, in FIG. 4 and FIG. 5, reference numeral 114 is
Indicates completion light.

Therefore, the output side of the next production model selection switch 102 is
The output of the first encoder 116 is connected to the first encoder 116 of the multiplexer 118.
The output side of the model set button 106 is connected to the second input terminal of the multiplexer 118. The output side of a second encoder 122 that encodes the output of the model number selection switch 108 is connected to the third terminal of the multiplexer 118 . The output side of the multiplexer 118 is connected to the input side of the register 124, and the output of the OR gate 126 is introduced to the other input side. The output side of the register 124 is connected to the input side of the comparator 120. In fact, register 124 is the holding register B contained therein.
and C to the comparator 120, and in addition to these, an output terminal to a sequence control circuit to be described later for placing a predetermined jig in a predetermined storage space according to the initial cent signal. have One output of the comparator 120 is connected to one input terminal of an AND gate 128, and the other output is connected to an inverter 130,
It is connected to one input terminal of the OR gate 126 via a ring counter 132. In addition, the or gate 126
The output side of the multiplexer 118 is connected to the other input terminal of the multiplexer 118, and the output of the left seat selection switch 110 and the output of the right one seat selection switch 112 are encoded and output to the input side of the multiplexer 118. Third
The output side of the encoder 134 is connected. The output side of the flip-flop circuit 136 is connected to the other input terminal of the AND gate 128. In this case, the output side of the AND gate 128 is connected to the sequence control circuit 138 and branches to the completion lamp 114 and the flip-flop circuit. Connect to the terminal of circuit 136. Note that the start button 104 is connected to the set S terminal of the flip-flop circuit 136.

Therefore, the operation of the circuit configured as described above will be explained below.

First, as shown by the left and right selection switches 110 and 112, insert the model number of the jig in the desired position of the jig storage spaces A to M/C (see Fig. 6) (see Fig. 7 (a)
) Step 1). That is, when there are jigs I to ■ according to the production model of the vehicle, first press the model number selection switch 1.
Set the 08 dial to 1 to 3. For example, if jig ■ is selected here, the model number selection switch 10
The dial of 8 is set to 1! − Must be done.

Therefore, the signal related to the selected 1 is converted into a digital signal by the encoder 122 (see FIG. 7(a)).
Step 2), leading to multiplexer 118. At this time,
When the set button 106 is turned on (7th
In step 3 of FIG. 7(a), the coded signal of the jig (2) is stored in register A of the registers 124 (step 4 of FIG. 7(a)).

Next, the selected jig 1 must be placed in a desired jig storage space. In this case, for example, if position A of the right seat selection switch 112 is desired, the dial of the switch 112 is set to A (see FIG.
bl step 1). As a result, the signal related to A is encoded by the encoder 134 and once sent to the multiplexer 1.
Introduced on 18th. Here, the model set button 10
6 is pressed (in FIG. 7) step 2), this signal enters the register 124 (in FIG. 7) step 3),
The signal stored in the holding register A of the jig (2) is set in the holding register B in relation to the accommodation space A position.

Through such a process, the jigs of all models will be accommodated in desired positions on the right or left seat. In the above case, the model number selection switch 10
8 dial selection act and seat selection switch 1. ],
Of course, both signals can be introduced into the multiplexer 118 by pressing the model set button after selecting 01112.

During this period, at the initial stage when the type and accommodation position of the jig are specified, this is once led out to the sequence control circuit 138 and energized, and under the control of the same, the vertical movement means 32 and the horizontal movement means 34 are activated. Of course, the jigs are driven and distributed to their respective storage positions. In particular, jigs stored in a specific storage space in this way are
As will be described later, only the jigs at a specific position, that is, only the jigs carried out by the horizontal movement means 34, are subjected to the welding process.

Next, we will explain how to replace the jigs that are set in the production process as described below.

For example, when different types of automobiles are run on the same production line, different welding jigs are generally used. Therefore, first, the next production model selection switch 102 is switched to select a predetermined number corresponding to the production model that will appear on the new line (step 1 in FIG. 7(C)). The signal related to this selected number is converted into a digital signal by the first encoder 116 (see FIG.
C) Along with step 2), the signal is stored in the holding section C of the register 124 via the multiplexer 118 (FIG. 7(C) step 3), and is led out to one input terminal of the comparator 118.

Holding unit B with the same numerical value as the signal in holding unit C of register 124
The output from the holding section B of the register 124 is introduced into the comparator 120 in order to find the signal of
FIG. 7(C) Step 5) When the flip-flop 136 is set, the comparator 120
The encoded signals of will be compared. In other words, the jig corresponding to the next production model of the automobile must always be fed into the welding machine main body 12, so if it is in the welding machine main body 12, it is special; otherwise, it must be moved in the horizontal direction. It must be placed in position B, shown in FIG. 6, where the means 34 is located. Therefore, the signal derived from the holding section C of the register 124 is always a signal indicating the B position. Therefore, if the compatible jig for the next production model is not in position B, first take out the existing jig from the welding machine main body 12, replace the compatible jig using the vacant seat in the storage space, and place it in the specified position. (Step 6 in Fig. 7(C)).

Here, for example, as shown in FIG. 6 (al), when jig (2) corresponds to the next production model mentioned above, this jig (2) must reach position B of the storage space. Therefore, the jig I in the processing position (M/C position N) of the welding machine main body 12 is first returned to the B position. That is,
The jig ■ is transferred from the M/C position shown in FIG. The signal of a certain jig and the coded signal selected by the next production model selection switch 102 are compared by the comparator 120.As mentioned above, in this case, since the jig I is in the B position, A discrepancy signal is output from the comparator 118 and passes through an inverter 130 to a ring counter 132.The output of the ring counter 132, on the other hand, enters the register 124 via an OR gate 126, indicating that the data differs from the stored data. At the same time, the sequence control circuit 138 is energized to control the jig (FIG. 6(B)).
Move it to position C as shown in (2). At this time, the sequence control circuit 138 sends a predetermined signal to the multiplexer 118 to indicate that the jig I has reached the C position, and the multiplexer 118 controls the register 124 to hold the jig I at the C position. Rewrite the information in section B (Fig. 7 (c+step 7). Next, the C position signal of this jig ■ and the signal that jig ■ should be at position B are stored in register 1.
24 to the comparator 120, and when the same mismatch signal is issued again, the ring counter 132 further energizes the sequence control circuit 138 to move the pair of jigs 1 to the M position and the E position ( (See Figure 6(a)■). When the jig ■ reaches position B by repeating the above operation (see Fig. 6 (al.
(see (2)), the comparator 120 sends a match signal to the AND gate 128. Since the output of the flip-flop 136 is input to the AND gate 128 when the start button 104 is pressed, the AND gate 128 is opened, and its output energizes the sequence control circuit 138 and moves the jig
/C position (Fig. 6 (a) ■) (Fig. 7 (Cl
Step 8).

This signal is passed through multiplexer 118 to register 12.
The data is sent to the holding section B of the register 124 to indicate that the jig (2) corresponding to the next production model, which is sent to the holding section C and held in the holding section C therein, is at the M/C position. At the same time, the output of the AND gate 128 is introduced into the completion lamp, which turns on to indicate that the moving operation is completed, and is also introduced into the R terminal of the flip-flop 136 to reset it.

In addition, in FIG. 6(b), instead of jig
The pattern of moving the jig ■ to the M/C position, and Fig. 6(e) shows the pattern of moving the jig ■ to the M/C position.
Remove the jig ■ above the C position and M/C the jig ■ again.
Show the pattern of moving into position.

According to the present invention, as described above, a plurality of jigs stored in a storage are stored in a relative positional relationship with a specific storage space, and a desired jig can be moved to a desired position by selecting the jigs. The generated jig and position signals are compared with conventional specific jig and position signals, and as a result, the vertical movement means and the horizontal movement means are driven to displace the conventional jig to the desired jig. can now be moved to a specific position. Therefore, although the present invention has an extremely simple configuration, it is possible to reliably and quickly provide a desired jig for the next production process, and all jigs can be stored without specifying the location, so the jig can be preserved. It was also confirmed that it is extremely efficient in its use.

The present invention has been described above with reference to preferred embodiments, but
It goes without saying that the present invention is not limited to this embodiment, but can be used for storing and transporting all kinds of articles, and various design changes and improvements can be made without departing from the spirit of the present invention.

[Brief explanation of the drawing]

The figures relate to the present invention, and FIG. 1 is an explanatory diagram showing the positional relationship between the welding machine main body, the jig, and the automobile to be processed;
Figure 2 is a perspective explanatory diagram showing the positional relationship between the welding body and storage, Figure 3 is a side view of the welding body and storage, and Figure 4 is a side view of the welding body and storage.
The figure is a front view of the operation panel, Figure 5 is a program circuit diagram showing the control system, Figure 6 is a pattern diagram for moving the jig to the storage space, and Figure 7 is the operation of the control system. It is a flowchart which shows. 10...Base 12...Welding machine main body 14...Body 16...Transportation means 18...Support member 20...Rondo 22...Holding stand 24...Storage 26...Strut 28...Horizontal member 30.・Carriage 32 ・Vertical direction moving means 34 ・
- Horizontal movement means 36... Sprocket 36... Chain 40... Guide rail 42... Lifting frame 44... Hook member 46.
- Roller bearing 48... Support frame 50... Chain 52... Sprocket 54... Hook member 56
・Transport bar 100 ・Operation panel 102 ・Next production model selection switch 104 ・Start button 106 ・Model set button 108 ・Model number selection switch 110 ・Right seat selection switch 112 ・Left seat selection switch 114 ・Completion lamp 116・First encoder 11
8 ・Multiplexer 120 ・Comparator 122 ・Second encoder 124 ・Register 126 ・OR gate 128 ・AND gate 130 ・Inverter 13
2 ・Ring counter 134 ・Third encoder 13
6 ・Flip-flop 138 ・Sequence control circuit (b) (c) M/c first procedure amendment (December 20, 1980 Commissioner of the Patent Office Wakasugi Oguchi 1, case display ■Total 158 Year: Patent Application No. 14.2238 2, Title of the invention: Arbitrary storage and retrieval device 3, Relationship with the case of the person making the amendment Patent Applicant Address: Shibuya-ku, Tokyo, Shinjikukan No. 27-8 Name: Honda Motor Co., Ltd. 4. Agent 5, this is the date of the amendment order and there is no change in history to the same content2.

Claims (1)

[Claims] (1) A vertical moving means and a horizontal moving means disposed in a storage having a plurality of storage spaces, a control circuit for energizing the vertical moving means and the horizontal moving means, and a control circuit for energizing the vertical moving means and the horizontal moving means, and A storage space selection means for specifying a storage space, an article selection means for selecting a plurality of articles to be placed in these storage spaces, and a predetermined article is placed in a predetermined storage space by biasing the storage space selection means and the article selection means. storage means for remembering that the storage device is stored;
The article selection means and the storage space selection means are energized and information based on these signals is introduced into the storage means, so that new information regarding the currently selected predetermined article and predetermined storage space and the already stored predetermined information are stored. The old information of the predetermined article in the storage space is compared, and based on the comparison result, the vertical movement means and the horizontal movement means are activated under the control of the control circuit to remove the predetermined article according to the old information from the predetermined storage space. At the same time as the transfer, the predetermined article related to the new information is transferred to the predetermined space after the transfer, and the information on the new article stored in the predetermined space is rewritten with the old information stored in the storage means. Optional storage/retrieval device featuring features.