JP3661621B2 - Mold lot management system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a management system for a molded product, and more particularly to a management system that enables information on a molded product to be stored at any time so as to be stored for a predetermined period in the past.
[0002]
[Prior art]
As a management system for injection molding machines, there has been proposed a multiple machine management system that can manage a plurality of injection molding machines arranged at the same site on various management screens. As will be described in detail later, the multiple-unit management system includes a management device, and the management device is connected to the control devices of the plurality of injection molding machines. Various data obtained from each operating injection molding machine are collected so that the operating status of each injection molding machine can be grasped. That is, the management device processes the obtained data to indicate the operating status and displays the processing result on the display, and also stores the raw data and the processing result data in the memory. In such a multi-unit management system, it goes without saying that the amount of data stored is enormous.
[0003]
Here, there remains a problem as to how to store data, such as a method for increasing the memory capacity of a multi-unit management system, and recording on a portable storage medium such as a CD-R or DVD-R. It can also be left behind.
[0004]
1. If you increase the memory capacity and view past data, you will use multiple management system hard disks, but to prevent data corruption, hard disk mirroring technology and data storage during power outages By attaching a device that performs the above, a very expensive system may be obtained. Also, mirroring technology does not support large capacity hard disks. Furthermore, it is possible to derive the past data from the shipped product (molded product) if the date of the stored data and the molded injection molding machine or product are known, but it is not easy.
[0005]
2. When storing in a portable storage medium, quality data and history information are separate data, and it is difficult to record them together. Here, quality data is data related to pressure, temperature, force, etc. obtained for each shot in each injection molding machine, and history information is state information indicating the operating state, that is, the operation and stop state of the injection molding machine. Or information indicating the presence / absence or type of abnormality, or information regarding settings, that is, molding conditions, for example, information indicating whether there is a change in molding conditions. Hereinafter, these will be referred to as quality data and state / history information.
[0006]
In conventional injection molding machine management systems, quality data and state / history information are usually recorded separately, and it is difficult to determine the past molding status of products in such a recording form.
[0007]
[Problems to be solved by the invention]
A multi-unit management system that collectively manages a plurality of injection molding machines records quality data and state / history information, and manages and monitors what is occurring at the molding site or whether molding is proceeding smoothly. Therefore, it is necessary to have real-time characteristics, and it is also necessary to record past quality data and state / history information.
[0008]
However, there is a demand for recording quality data and state / history information for several years in some cases because of ISO support such as traceability for products already shipped. It is also desirable that the recorded quality data and status / history information can be easily extracted and viewed.
[0009]
Accordingly, an object of the present invention is to provide a molded product that can easily take out quality data and state / history information related to a product that has already been shipped, and can easily display a management screen created thereby on a display. Is to provide a management system.
[0010]
[Means for Solving the Problems]
According to the present invention, there is at least one multi-unit management system connected to each control device of a plurality of injection molding machines to collectively manage each injection molding machine, and the quality of each molded product shot in each injection molding machine. A lot management management device connected via a communication means to a plurality of management systems in a multi-unit management system having a storage means for storing data, information relating to operating conditions, and information relating to setting changes; The management device extracts the quality data stored in the storage means, the information on the operation state, and the information on the setting change in a predetermined lot unit and stores them in the memory for a predetermined period in the lot unit. and, wherein the quality data about past moldings, information about the operating condition, the lot management information on the setting change at any time Moldings lot control system being characterized in that to enable the display on the output unit as a UI removed for any lot that has been input from the input unit of the management device is provided.
[0011]
In this lot management system, a lot number is assigned when storing in the memory in units of lots, and the same lot number is assigned to all the articles defined by the lot number, whereby the memory with respect to the memory is assigned. It is preferable that quality data, information related to the operating state, and information related to the setting change can be read using the lot number.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Before describing the embodiments of the present invention, the embodiments described below are premised on being applied in combination with a plurality of management systems that collectively manage a plurality of injection molding machines. Therefore, first, a management system for a plurality of injection molding machines will be described.
[0013]
FIG. 2 shows a configuration of a multiple unit management system for an injection molding machine. In FIG. 2, a plurality of injection molding machines 10-1 to 10-n are installed in a certain factory 100, and the plurality of injection molding machines 10-1 to 10-n includes a management device 20. Are managed collectively. That is, the management device 20 is connected to each control device in the injection molding machines 10-1 to 10-n, and various kinds of sensors from various sensors installed in the injection molding machines 10-1 to 10-n. Data is received via each control device, the received data is processed for each injection molding machine based on a built-in management program, and the processed result is stored in a built-in memory and displayed on a display as a management screen. Of course, depending on the type of data, the received raw data may be stored in the memory as it is.
[0014]
In particular, this multi-unit management system has a management center for the plant 100 in a remote location away from the plant 100, or another factory managed by the same multi-unit management system is in another location. When the management center of the factory 100 is in another location, the management center can acquire specific information from the management apparatus 20 in the factory 100 or another factory by accessing a Web server via a communication network such as the Internet. Can be configured. Alternatively, even when a plurality of management systems in the factory 100 and a plurality of management systems in another factory can be connected via a network such as a LAN (Local Area Network), specific information can be mutually acquired. Can be configured.
[0015]
As is well known, the Web server generally operates according to HTML. However, for example, it may be one that can handle Compac HTML data that defines a Web service for mobile phones. In any case, this type of Web server includes a processor and a memory, and the operation of the Web server is realized by the processor executing a program stored in the memory. The memory is also a temporary storage location for data output while the processor is executing a program.
[0016]
Of course, in order to prevent access from a completely unrelated communication terminal apparatus, an ID number and a password are given to the communication terminal apparatus that can access the Web server in advance.
[0017]
Next, four examples of a plurality of types of screens displayed to represent the management status of each injection molding machine in the management apparatus 20 of the multiple-unit management system will be described.
[0018]
FIG. 3 is an operation status screen that displays the operation status of a plurality of injection molding machines in real time. On this operation status screen, the operating status of a plurality of injection molding machines is displayed on a single screen in real time for all the units (here, No. 1 to No. 30) in a screen division format. For example, referring to FIG. 4 which is an enlarged view of the No. 9 machine, the number of the No. machine is shown in the upper left, the molding condition change display unit C1 in the upper right shows the count value of the molding condition change counter (here, 17), the right side A bar graph B1 shows a 24-hour operation status graph, and a shot number (529) and a cycle time (14.9 sec) are displayed on the lower side.
[0019]
Here, the molding condition change counter is a counter that counts how many times the molding conditions have been changed from the start of molding to the present. This counter is provided in the management apparatus 20. The control device in each injection molding machine is provided with means for detecting a change in molding conditions, and the management device 20 receives each detection result from each control device and counts each, and the count result for each machine is displayed as a molding condition change display unit. Display on C1. In the management device 20, this display value can be reset as necessary.
[0020]
The 24-hour operation status graph is a single first bar graph B1 in which the operation status of the injection molding machine in the past 24 hours from the current time is color-coded. The operation status is defined by four types: operation, normal stop (during standby), stop due to abnormality, and power-off, and the four types of status are displayed in different colors according to the passage of time from 24 hours ago to the present time. Is done. Here, operation is shown in blue, normal stop is yellow, stop due to an abnormality is red, and power off is shown in gray. Coarse hatching and gray are shown with a left-down hatching. In addition, the lowermost end of the first bar graph B1 indicates 24 hours ago, and the uppermost end indicates the current time point. If there is, the first bar graph B1 is displayed with the lower half in yellow and the upper half in blue.
[0021]
Furthermore, in this example, the appearance of the injection molding machine is schematically displayed in the divided screen of each unit, and the background is based on the operation, the normal stop, and the occurrence of an abnormality to indicate the current operation status. The four types of stop and power off are displayed in the same color relationship as the color classification in the first bar graph B1. That is, if it is the same as the above example, the background color is blue.
[0022]
By looking at such an operation status screen, the operator or administrator can know at a glance which unit has been in what operating status in the past 24 hours. The numerical value of 24 hours is usually a fixed value, but may be variable.
[0023]
By the way, the management device 20 displays a general graph screen showing in detail the operating status of only the corresponding unit by clicking on a specific location (icon on the screen) in the divided screen of each unit on the above operating status screen on the display. It is possible.
[0024]
FIG. 5 shows an example of the summary graph screen. In this summary graph screen, the change status of quality data for 24 hours, presence / absence of abnormality, and presence / absence of setting change by time for each unit (here, No. 10). It is displayed on one screen as an axis. In FIG. 5, the uppermost graph is a line graph showing changes in the cumulative value of the number of shots, and a plurality of vertically arranged lines, for example, the line L1, has a molding interruption (occurrence of anomaly) around 18:00. It shows that. The “state” of L2 is the same as the display of the operation status described above, and is defined by four types: operation, normal stop (during standby), stop due to abnormality occurrence, and power off, and 24 hours worth The status is displayed in different colors according to the time. The “condition name” of L3 is a graph showing the change time when the molding condition is changed, that is, when the condition name for each molded product is changed, the color is changed. In other words, this is changed when the molded product changes, and is displayed by color, but the color itself is not meaningful, but is meaningful at the time when the color changes. On the other hand, the “item” in L4 is a graph that displays the change in color with time when the condition item in the molding condition is changed. For example, the color is changed when an injection condition, a mold opening condition, or the like is changed, and this is also more meaningful at the time when the color changes rather than the color itself. For this reason, four or more colors are prepared for “condition name” and “item”, unlike “status”.
[0025]
Further, the first graph of L5 shows the elapsed time of “filling time” of the display item shown in the display item selection column on the lower side of FIG. 5, and the second row similarly shows the time of “minimum cushion position”. Show progress. The third graph shows the “holding pressure completion position”, and the fourth and fifth graphs show the elapsed time of “VP switching position” and “pre-filling position”, respectively.
[0026]
In this example, the operation status of the unit in the past 24 hours is further displayed on the right side of the general graph screen with a numerical value indicating 24 hours by the second bar graph B2 at an operation rate of 0 to 100%. ing. FIG. 5 shows that the operation rate for the past 24 hours is 95%, and the operation rate calculation is based on “time display” in the display item selection field on the lower side of FIG. The number is displayed. The numbers in the “time display” column here can be arbitrarily changed. In other words, the “date and time” and “time display” shown in the display item selection field can be arbitrarily set, and here, a numerical value of 24 hours from 10:00 on September 4, 2000 is set. As shown in the uppermost part of FIG. 5, 24 hours from 10:00 on September 4, 2000 to 10:00 on September 5, 2000 are displayed. If the number “12” is entered in “time display”, the operation rate for the past 12 hours based on 12 hours is displayed in the second bar graph B2. In this case, the graphs or items in the first to eighth stages in FIG. 5 are also shown for the past 12 hours. According to such 2nd bar graph B2, the operation rate from arbitrary time of arbitrary time can be displayed.
[0027]
FIG. 6 shows an example of the setting history screen. In this setting history screen, the molding condition setting change history is changed by item (in this case, No. 10), the changed items, the setting values before and after the change, and the changes. It is displayed on one screen with the date and time.
[0028]
FIG. 7 shows an example of an abnormality history screen. In this abnormality history screen, the history of abnormality occurrence is displayed on one screen for each unit (here, No. 10) together with the item of abnormality, the occurrence date and time, and the release date and time. .
[0029]
As described above, the general graph screen of FIG. 5 is linked to the operation status screen of FIG. 3, and is displayed by clicking a specific location (icon on the screen) of each unit on the operation status screen of FIG. It is like that. Further, the setting history screen of FIG. 6 and the abnormality history screen of FIG. 7 are linked to the operation status screen of FIG. 3 or the general graph screen of FIG. 5, respectively, and the operation status screen of FIG. 3 or the general graph screen of FIG. It is displayed by clicking a specific part (icon on the screen).
[0030]
The memory provided in the management device 20 has a built-in image display program for displaying the various management screens as described above, and can store quality data and status / history information for a total of million shots. have. Of course, these quality data and state / history information are configured so as to be managed in a unified manner, and are stored for each machine together with data indicating the machine number of the injection molding machine and data indicating the date and time.
[0031]
The above-mentioned multiple-unit management system is proposed by the present inventor, for example, in “Remote Monitoring Method Using Communication Network” (2001 Japanese Patent Application No. 193119).
[0032]
FIG. 1 shows a configuration when a lot management system for molded articles according to the present invention is connected to a plurality of management systems via a communication network such as a LAN. Here, the lot management system is connected to a plurality of management systems consisting of injection molding machines 10-1 to 10-n and a plurality of management systems consisting of injection molding machines 10-1 'to 10-n'. Shall. The number of the injection molding machine in this case is, for example, 10-1 for “No. 1”, 10-n for “No. n”, 10-1 ′ for “(n + 1) No.”, and 10-n ′ for “No. The number “n + n” is given. The lot management system is realized by a management device 1 such as a personal computer. The management device 1 in addition to the data transmission / reception function via the communication network, the quality data from the memories of the management devices 20 and 20 ′ of each of the plurality of management systems. , A memory for reading and storing state / history information, an output means such as a display, and an input means such as a keyboard and a mouse. The memory of the management apparatus 1 incorporates the same image display program as the image display program for displaying various management screens in the management apparatus 20 described above.
[0033]
The molded product lot management system according to the present embodiment is connected to two multiple-unit management systems via a communication network, reads quality data, status / history information from the memory of the management devices 20 and 20 ', and manages past products. Is performed in lot units. For this purpose, when the management device 1 stores the quality data and state / history information read out from the management devices 20 and 20 ′ together with the data indicating the machine number of the injection molding machine and the data indicating the date and time, Record with a number.
[0034]
Lots may be defined in any way, for example, one day for a machine with an injection molding machine and 10,000 shots for a machine with an injection molding machine. For example, if the quality data and status / history information for one day of a machine with an injection molding machine is one lot, the management device 1 reads the quality data, status / history information by machine and lot by lot, And store it in the memory. Of course, the same lot number is assigned to the product itself or a package containing the product in a certain number of units. That is, if the quality data and state / history information for one day of a machine with an injection molding machine is one lot, as in the above, all the products molded during that time or the containers containing the products Is assigned the same lot number as the lot number assigned by the management apparatus 1.
[0035]
As a result, when it is desired to know the contents of the past data of a certain product, when the lot number given to the certain product is input on the search screen displayed on the display in the management apparatus 1, Searching and reading by the lot number are performed, quality data and state / history information defined by the lot number are read, and image display by the image display program is performed. The screen in this case is the same as the general graph screen described with reference to FIG.
[0036]
An operation procedure in the management apparatus 1 in the lot management system according to the present embodiment is as follows.
[0037]
(1) The management device 1 calls the quality data, status / history information necessary for displaying the general graph screen as described in FIG. 5 from the memory of a plurality of management systems for each lot, via the communication network. Received and recorded in the built-in memory with lot number for each lot.
[0038]
(2) Since the lot number to be managed is recorded in the memory in the management apparatus 1, even if the product has been shipped before, if the lot number is known, the lot number is input by the input means. The quality data, status / history information about the product can be retrieved from the memory and displayed on the display as a general graph screen.
[0039]
In other words, in this lot management system, a search screen for calling the quality data and status / history information corresponding to the lot number from the lot number, and sufficient capacity to record the past quality data and status / history information for the desired period. If there is no memory. Of course, this memory may be another portable recording medium, and since it is recorded for each lot, a desired lot can be easily called.
[0040]
The quality data and state / history information stored in the memory in the management apparatus 1 are stored together with the machine number and date and time, as described above. It is also possible to read out the corresponding unit, date / time quality data, status / history information, and create and display a management screen.
[0041]
【The invention's effect】
According to the present invention, the following effects can be obtained.
[0042]
1) Quality data, status / history information on past products can be managed by lot number.
[0043]
2) Quality data and status / history information related to past products can be displayed as a general graph screen with the same operability as the previously proposed multi-unit management system.
[0044]
3) Since quality data and status / history information can be recorded for each lot not only in a memory such as a hard disk but also in other portable storage media, the search can be easily performed.
[Brief description of the drawings]
FIG. 1 is a diagram schematically showing a connection configuration via a network when a lot management system for molded products according to the present invention is applied in combination with a management system for a plurality of injection molding machines.
FIG. 2 is a diagram for explaining the configuration of the multiple-unit management system shown in FIG. 1;
FIG. 3 is a diagram showing an example of an operation status screen as an example of a management screen displayed on the display of the multiple vehicle management system shown in FIG. 2;
4 is an enlarged view of one of the divided screens shown in FIG.
5 is a diagram showing an example of a general graph screen as another example of the management screen displayed on the display of the multiple-unit management system shown in FIG. 2. FIG.
6 is a diagram showing an example of a setting history screen as another example of the management screen displayed on the display of the multiple-unit management system shown in FIG. 2. FIG.
7 is a diagram showing an example of an abnormality history screen as another example of the management screen displayed on the display of the multiple-unit management system shown in FIG. 2. FIG.
[Explanation of symbols]
1, 20, 20 'Management devices 10-1 to 10-n, 10-1' to 10-n 'Injection molding machine B1 First bar graph B2 Second bar graph

Claims (5)

At least one multi-unit management system connected to each control device of a plurality of injection molding machines to collectively manage each injection molding machine, and information on quality data for each shot of the molded product in each injection molding machine and information on the operating state A management device for lot management connected via a communication unit and a management unit for management of multiple units in a multiple unit management system having storage means for storing information relating to setting changes ,
The management apparatus for lot management extracts the quality data, the information on the operation state, and the information on the setting change stored in the storage unit in a predetermined lot unit, and for a predetermined period in the lot unit. Only in the memory, the quality data relating to the past molded product, the information relating to the operating state, and the information relating to the setting change are taken out for an arbitrary lot input from the input means of the lot management device at an arbitrary time. A lot management system for molded products, which can be displayed on output means as a management screen.   The lot management system according to claim 1, wherein a lot number is assigned when storing in the memory in units of lots, and the same lot number is assigned to all molded articles defined by the lot numbers, The molded product lot management system, wherein the quality data, the information on the operation state, and the information on the setting change with respect to the memory can be read with the lot number. 3. The molded product according to claim 1, wherein a search is performed by a lot number for calling up the quality data, the information related to the operation state, and the information related to the setting change in the lot management system according to claim 1. Lot management system. The lot management system according to any one of claims 1 to 3, wherein the output means is a display, and the display includes a summary graph screen including the quality data, information on the operation state, and information on the setting change. A lot management system for molded products, characterized in that is displayed. The lot management system according to any one of claims 1 to 4, wherein the memory includes the quality data, information about the operating state, and information about the setting change together with data indicating an injection molding machine number and data indicating a date and time. A lot management system for molded products, which is memorized in

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