JP4364147B2 - History management method and apparatus for injection molding machine - Google Patents

Description

  The present invention relates to a history management method and apparatus for an injection molding machine that stores and manages work history data.

  In general, when molding a molded product by an injection molding machine, precise setting of molding conditions is an important factor for obtaining a good product. For this reason, when the molding environment fluctuates due to disturbance or the like, it is necessary to change the molding conditions in accordance with the fluctuation.

  On the other hand, the history related to such changes becomes effective information for later analysis of defective products, resetting of molding conditions, and the like. Was proposed in Japanese Patent Laid-Open No. 2002-86530. The control device disclosed in the publication provides a second memo screen in addition to the first memo screen for displaying the condition memo data for each mold, and the second memo screen has a general-purpose memo other than the conditional memo data. In addition to providing a display processing function for inputting and displaying data, it also provides a data processing function for processing general-purpose memo data independently of other data including conditional memo data. And productivity can be improved.

On the other hand, a method in which data relating to a history is automatically stored is also known from Japanese Patent Application Laid-Open No. 2003-236900. The trouble diagnosis support method of the unloader disclosed in the same publication monitors the presence or absence of an operation, and when there is an operation, stores all operation history data performed by the operator for the unloader in a storage device, When the state of the unloader changes by monitoring the state change of the unloader, the state history data of the unloader is stored in the storage device, and the state history data of the molding machine is stored when the state of the molding machine changes And the history data is output to the display device, and it is intended to quickly diagnose and take measures against the failure.
JP 2002-86530 A JP 2003-236900 A

  However, the conventional history management method described above has the following problems. That is, in the former case, since a memo screen that can be arbitrarily written is used, an arbitrary history including know-how and detailed information can be stored. However, since the history to be stored is not defined, the history is stored. There is difficulty in certainty. On the other hand, in the latter case, since a predetermined history is automatically stored, a certain history can be surely stored, but the stored information is superficial information and cannot store know-how and detailed information. After all, there are merits and demerits in the quantity and quality of the history to be stored in each case, and there is a problem that necessary and sufficient history data cannot be secured.

  An object of the present invention is to provide a history management method and apparatus for an injection molding machine that solves the problems existing in the background art.

  The history management method of the injection molding machine M according to the present invention stores and manages the work history data Ds... In the memory 24 of the molding machine controller 20 built in the injection molding machine M in order to solve the above-described problems. When the work history data Ds... Including at least new setting data or setting change data Dsc... Is stored in the memory 24, the worker information Dh... Corresponding to each work history data Ds. The information Dh ... is added to the corresponding work history data Ds ... and stored in the memory 24. When the work history data Ds ... is displayed on the display 14 of the molding machine controller 20, the stored work history data Ds ... The worker information Dh... Corresponding to the work history data Ds... Is displayed together or in association.

  In this case, according to a preferred aspect of the invention, the worker information Dh... Can use worker codes Dh. If any registered worker information Dh... Is designated, work history data Ds... Corresponding to the designated worker information Dh... Is extracted, and the extracted work history data Ds. The worker information Dh... Can be displayed or stored.

  On the other hand, the history management device 1 of the injection molding machine M according to the present invention stores and manages the work history data Ds... In the memory 24 of the molding machine controller 20 built in the injection molding machine M in order to solve the above-described problems. When configuring the history management device to perform, worker information fetching means 2 for fetching worker information corresponding to work history data Ds... Including at least new setting data or setting change data Dsc. The data storage means 3 for adding Dh ... to the corresponding work history data Ds ... and storing it in the memory 24, together with the stored work history data Ds ... and the worker information Dh ... corresponding to the work history data Ds ... Alternatively, it is characterized by comprising data display means 4 for displaying on the display 14 of the molding machine controller 20 by associating.

  In this case, according to a preferred aspect of the invention, the worker information fetching means 2 includes an input means 2a for directly inputting the worker information Dh ..., a selecting means 2b for selecting the registered worker information Dh ..., and worker information Dh. At least in reading means 2c for reading a bar code recording ..., reading means 2d for reading from an external memory such as an IC card storing worker information Dh ..., and reading means 2e for reading from an IC tag 5 storing worker information Dh ... One or more can be used.

  According to the history management method and history management apparatus 1 of the injection molding machine M according to the present invention as described above, the following remarkable effects can be obtained.

  (1) Since the worker information Dh... Is added to and stored in the corresponding work history data Ds..., Necessary work history data Ds... Can be secured, and from the corresponding worker information Dh. Therefore, it is possible to identify a worker related to the work, and it is possible to obtain further necessary information on the corresponding work from the worker, and to secure necessary and sufficient history information in both quantity and quality.

  (2) Since the work history data Ds... Includes at least new setting data or setting change data Dsc..., The reason why the setting or change was made or changed by the worker who made or changed the setting later, etc. It is possible to confirm and analyze the defective product, investigate the cause of malfunction, reset the molding conditions, etc. quickly and accurately.

  (3) According to a preferred aspect, if a worker code including information specifying at least a worker such as name and affiliation is used in the worker information Dh..., A larger amount of information is included with respect to a smaller amount of data. be able to.

  (4) According to a preferred embodiment, when any registered worker information Dh... Is designated, work history data Ds... Corresponding to the designated worker information Dh. If the data Ds... And the optional worker information Dh... Are displayed or stored, the skill and skill level of each worker can be accurately managed for the stop of the injection molding machine M and the abnormality handling. it can.

  (5) According to a preferred embodiment, as the worker information fetching means 2, an input means 2a for directly inputting the worker information Dh ..., a selection means 2b for selecting the registered worker information Dh ..., and worker information Dh ... At least one or two of reading means 3c for reading the recorded bar code, reading means 3d for reading from an external memory such as an IC card storing worker information Dh, and reading means 2e for reading worker information Dh. If the above is used, it can take in by means suitable for a work situation etc. from various means.

  Next, the best embodiment according to the present invention will be given and described in detail with reference to the drawings.

  First, the configuration of an injection molding machine M including the history monitoring apparatus 1 according to the present embodiment will be described with reference to FIG.

  In FIG. 2, M indicated by an imaginary line is an injection molding machine, which includes a machine base Mb, an injection device Mi and a mold clamping device Mc installed on the machine base Mb. The injection device Mi includes a heating cylinder 10. The heating cylinder 10 includes an injection nozzle that does not appear in the drawing at the front end of the heating cylinder 10, and a hopper 11 that supplies material to the rear of the heating cylinder 10. On the other hand, the mold clamping device Mc includes a mold 12 composed of a movable mold and a fixed mold. Further, a side panel 13 that is erected is provided on the machine base Mb, and a display 14 is disposed by using the side panel 13. The display 14 is provided with an input touch panel (input unit 22). The display 14 constitutes data display means 4 for displaying work history data Ds... Described later and worker information Dh... Corresponding to the work history data Ds. Can be displayed.

  The machine base Mb incorporates a molding machine controller 20. The molding machine controller 20 is extracted and shown in FIG. The molding machine controller 20 has a computer function and can perform various processes and controls. In the molding machine controller 20, 21 is a CPU, 22 is an input unit such as a keyboard or a touch panel, 23 is a ROM, 24 is a memory, and 25 is a reader / writer.

  In this case, the input unit 22 constitutes input means 2a for directly inputting worker passwords Pw... And worker information Dh... And selection means 2b for selecting registered worker information Dh. The ROM 23 stores at least a processing program Pc for executing a series of processes of the history management method according to the present embodiment, and stores various programs necessary for the molding machine controller 20. The memory 24 includes a data area Aa for storing work history data Ds ... and a data area Ab for storing worker information Dh ..., and at least the work history data Ds ... and worker information Dh ... are stored in association with each other. The memory 24 constitutes data storage means 3 for storing worker information Dh... Described later by adding it to the work history data Ds... By using a RAM, a nonvolatile memory, or the like.

  Further, the reader / writer 25 is a general term for reading means for reading the worker information Dh ... from the outside. For example, the reader / writer 25 stores reading means 2c for reading a bar code recording the worker information Dh ..., and worker information Dh .... A reading means 2d for reading from an external memory such as an IC card, a reading means 2e for reading from the IC tag 5 storing the worker information Dh, etc. are included. Each reading means 2c, 2d, 2e and the above-described input means 2a and selection means 2b constitute worker information fetching means 2 for fetching worker information Dh ... corresponding to each work history data Ds ... described later. . The reader / writer 25 is connected to the CPU 21 via an I / O port (input / output port) 26. The CPU 21 is connected to each control target of the injection molding machine M via an I / O port (input / output port) 27 and is connected to the display 14 via a display interface 28.

  On the other hand, the history management apparatus 1 is configured by using the molding machine controller 20 and the display 14, and the main part is configured by the combination of the worker information fetching means 2, the data storage means 3 and the data display means 4 described above. . In this case, as described above, the worker information fetching means 2 has a function of fetching the worker information Dh... Corresponding to each work history data Ds. The information display unit 4 has a function of adding the information Dh... To the corresponding work history data Ds... And storing the stored work history data Ds... And worker information Dh corresponding to the work history data Ds. ... are displayed together or in association with each other.

  Next, a history management method according to the present embodiment will be described according to the flowchart shown in FIG. 3 with reference to FIGS.

  First, worker codes (worker information) Dh... Are registered in the molding machine controller 20 in advance. FIG. 4 shows the worker code registration screen Vs. Registration of worker codes Dh... On the worker code registration screen Vs is performed as follows. As an example, a case where the first worker registers is assumed. In this case, the worker turns on the registration number “1” to enter the input state. Then, the numeric keypad is displayed in a window, and the operator code Dh assigned to the worker, specifically, “585-095630” is entered on the numeric keypad. Thereby, the worker code Dh input to the worker code display unit 31 is displayed. Other workers can sequentially register each worker code Dh. This worker code Dh... Includes at least information identifying the worker such as name and affiliation. By using such worker codes Dh..., A larger amount of information can be included with respect to a smaller amount of data.

  Next, the case where the setting change in the molding machine controller 20 is performed in the injection molding machine M is assumed. In general, setting data such as molding conditions that are finally set by a new setting or setting change in an injection molding machine often has subtle values including the know-how of the worker in charge. If they are deleted or changed by themselves, etc., it will cause a serious disadvantage. For this reason, the setting data is normally protected by locking the setting function for the setting data with a predetermined lock function (see Japanese Patent No. 3450746).

  Therefore, when the operator changes the setting, it is necessary to input the password to unlock the setting function. Assume that an arbitrary worker has entered a password (step S1). The password can be input from a password input screen displayed on the display 14 or the like. At this time, if the entered password is not recognized, the setting change is not permitted (steps S2 and S3). On the other hand, if the entered password is recognized, the setting change is permitted (step S4).

  When the setting change is permitted, the recognized worker can change the setting with respect to the molding conditions (steps S5 and S6). On the other hand, when the setting change is completed, work history data Ds is automatically created (steps S7 and S8). For example, when the content of the implemented setting change is to change the protruding pressure in the protruding process from 0 to 11%, “14:09” as in the setting change data (work history data) Dsc shown in FIG. (Time), "<EJECT> (protruding process)", "" EJCT PRES. The content of “(projecting pressure)”, “0” → “11%” is created.

  At this time, the worker code Dh corresponding to the setting change data Dsc is taken, and the taken worker code Dh is added to the corresponding setting change data Dsc (step S9). In the case of the example, since the worker code Dh identifies the worker by the input password, the identified worker code Dh (“585-095630”) is added as shown in FIG. Therefore, the worker information fetching means 2 in this case uses the selecting means 2b for selecting the registered worker codes Dh. The setting change data Dsc to which the worker code Dh is added is stored in association with the data areas Aa and Ab of the memory 24 (step S10). Furthermore, when the next setting change is performed, the same procedure can be performed (steps S11, S6...).

  Therefore, according to the history management method according to the present embodiment, work history data (setting change data) Ds (Dsc)... And corresponding worker information (worker code) Dh. As shown, when the history screen Vr is displayed, each work code Dh... Corresponding to each work history data Ds. Thereby, for example, when a protrusion abnormality occurs in the protrusion process, it is possible to confirm the reason for the change from the worker of the worker code “585-095630” that has changed the setting most recently, the situation at that time, and the like. It is possible to investigate the cause of the abnormality quickly and more accurately.

  In the history screen Vr shown in FIG. 1, reference numeral 32 denotes a scroll key, which can scroll the displayed history and display a history hidden from the screen. In the history screen Vr of FIG. 1, a molding machine error key 33, a molding condition setting key 34, and an operation switching key 35 are used to extract work history data Ds related to molding machine error, molding condition setting, and operation switching, respectively. By turning on each key 33..., The corresponding work history data Ds can be displayed. An example is when the molding condition setting key 34 is turned on. Accordingly, only the molding condition setting history is displayed on the history screen Vr of FIG.

  According to such a history management method according to the present embodiment, since worker information Dh... Is added to and stored in corresponding work history data Ds..., Necessary work history data Ds. Since the worker related to the work of the work history data Ds... Can be specified from the worker information Dh... To be obtained, further necessary information of the corresponding work can be obtained from the worker, and it is necessary in both quantity and quality. And sufficient history information can be secured. In particular, since at least new setting data or setting change data Dsc... Is included in the work history data Ds..., The reason why the setting or change was made or changed by the worker who made or changed the setting later, etc. This makes it possible to quickly and accurately perform analysis of defective products, investigation of causes of malfunctions, resetting of molding conditions, and the like.

  In the above-described embodiment, the case where the selecting means 2b for selecting the registered worker information (worker code) Dh... Is used as the worker information capturing means 2 is described. You may use the input means 2a which inputs directly. In this case, it is effective when the worker code Dh related to the corresponding worker is not registered in advance, and when the setting change is completed, an input screen for inputting the worker code Dh may be displayed in a window. Thereby, the worker code Dh can be directly input by the worker. Also, reading means 2d for reading from an external memory such as an IC card storing worker codes Dh... And reading means 2c for reading a bar code recording worker codes Dh. In this case, an IC card or a bar code card possessed by the operator can be read from the reader / writer 25 and input. Accordingly, the reading means 2c and 2d in this case may be used as the input means 2a for directly inputting the worker codes Dh... Or the selection means 2b for registering and selecting the worker codes Dh. Also good.

  Further, as the worker information fetching means 2, a reading means 2e that reads from the IC tag 5 storing the worker codes Dh... May be used. In this case, as shown in FIG. 5, the IC tag 5 is attached to or built in the name plate 51 attached to the chest or the like by the worker H. Thereby, when the above-described setting change is completed, the operator code Dh stored in the IC tag 5 is automatically read by the reader / writer 25 (see FIG. 5). At this time, when there are a plurality of workers, a plurality of worker codes Dh... Are read, and for example, as shown in FIG. The identification markings 41, 42, and 43 may be used so that the worker code Dh of the worker who entered the password and the worker codes Dh of other workers can be identified.

  Such operator information fetching means 2, that is, input means 2a for directly inputting worker codes Dh..., Selection means 2b for selecting registered worker codes Dh... At least one or more of reading means 3c, reading means 3d for reading from an external memory such as an IC card storing worker code Dh, and reading means 2e for reading worker code Dh ... Thus, it is possible to select and take in a means suitable for the work situation from various means.

  On the other hand, in the history management method according to the present embodiment, an operator can be selected by the worker selection key 36 on the history screen Vr, and only the history of the selected worker can be displayed. Next, this worker extraction display method will be described with reference to the flowchart shown in FIG.

  First, the history screen Vr shown in FIG. 1 is displayed (step S21). Next, the operator selection key 36 displayed on the history screen Vr is turned on. As a result, the registered worker codes Dh... Are displayed in a pull-up manner, and the worker codes Dh for an arbitrary worker are designated on this pull-up screen (step S22). As a result, work history data Ds... Corresponding to the designated worker code Dh is extracted (step S23). Then, the extracted work history data Ds... And the corresponding worker code Dh are displayed (step S24). Even histories related to other worker codes Dh can be similarly extracted and displayed (steps S25, S22...). Since it has such an extraction processing function, work history data Ds... For each worker code Dh.

  By performing such display or registration by the extraction processing function, it is possible to accurately manage the skill and skill level of each worker with respect to the stop of the injection molding machine M and the handling of an abnormality. The same display can be performed from the worker code registration screen Vs shown in FIG. That is, if the worker number corresponding to the worker code Dh related to an arbitrary worker is designated and the worker display key 37 is turned on, only the work history data Ds... Related to the corresponding worker code Dh is collected. Can be displayed.

  As described above, the best embodiment has been described in detail, but the present invention is not limited to such an embodiment, and the detailed configuration, method, numerical value, and the like are within the scope not departing from the gist of the present invention. It can be changed, added, or deleted arbitrarily.

  For example, although the setting change data Dsc... Has been mainly described as the work history data Ds..., New setting data, and other various work history data Ds. Can be applied. Further, when displaying the work history data Ds..., It is not always necessary to display the work history data Ds... And the corresponding worker information Dh... Only when, for example, the worker display mode is selected. You may make it display. Accordingly, in this case, the worker information Dh... Is displayed in association with the work history data Ds. Further, although the worker information Dh... By numbers is exemplified as the worker information Dh..., An alphabet or the like may be added, or a name by a Chinese character or the like may be directly used. On the other hand, the reader / writer 25 is used for reading, but may be used for writing if necessary. Therefore, in this case, the work history data Ds... And the worker information Dh... Can be written on the IC card or the like and used for analysis in other places.

History screen diagram used in the history management method of the injection molding machine according to the best embodiment of the present invention, Configuration diagram of an injection molding machine and a history management device (molding machine controller) that can implement the history management method, A flowchart showing a processing procedure for explaining the history management method, Worker code registration screen diagram used for the history management method, Configuration diagram of means for reading from an IC tag provided in the history management device, Explanatory drawing of the registration mode concerning worker information taken in by the same means, The flowchart which shows the process sequence for demonstrating the worker extraction display method which displays only the log | history of the selected worker in the same log | history management method,

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1: History management apparatus, 2: Worker information taking-in means, 2a: Input means, 2b: Selection means, 2c: Reading means, 2d: Reading means, 2e: Reading means, 3: Data storage means, 4: Data display Means, 5: IC tag, 14: Display, 20: Molding machine controller, 24: Memory, M: Injection molding machine, Ds ...: Work history data, Dh ...: Worker information (worker code), Dsc: Setting change data

Claims (5)

  In a history management method of an injection molding machine that stores and manages work history data in a memory of a molding machine controller built in the injection molding machine, when storing work history data including at least new setting data or setting change data in the memory In addition, when the worker information corresponding to each work history data is captured, and the captured worker information is added to and stored in the corresponding work history data, the work history data is displayed on the display of the molding machine controller. A history management method for an injection molding machine, wherein the stored work history data and worker information corresponding to the work history data are displayed together or in association with each other.   2. The history management method for an injection molding machine according to claim 1, wherein the worker information uses a worker code including at least information identifying a worker such as name and affiliation.   If any registered worker information is designated, work history data corresponding to the designated worker information is extracted, and the extracted work history data and the arbitrary worker information are displayed or stored. The history management method for an injection molding machine according to claim 1.   In a history management device for an injection molding machine that stores and manages work history data in a memory of a molding machine controller built in the injection molding machine, worker information corresponding to work history data including at least new setting data or setting change data is stored. Worker information fetching means to be taken in, data storage means for adding the fetched worker information to corresponding work history data and storing it in the memory, stored work history data, and work corresponding to the work history data A history management device for an injection molding machine, comprising: data display means for displaying the information on the display of the molding machine controller together or in association with each other.   The worker information fetching means includes an input means for directly inputting worker information, a selection means for selecting registered worker information, a reading means for reading a bar code recording the worker information, and an IC storing the worker information. 5. The history management apparatus for an injection molding machine according to claim 4, wherein at least one or more of reading means for reading from an external memory such as a card and reading means for reading from an IC tag storing worker information are used.

Images