JP2009205452A - Set pattern generation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To avoid a stop of a line at the occurrence of a small lot of components of a prescribed amount or below on a set pattern. <P>SOLUTION: This set pattern generation device includes: an initial set pattern generation part 24 generating an initial set pattern by a predetermined standard procedure; a sandwiching lot extraction part 26 extracting a lot wherein an arrangement time of the next lot cannot be processed within a lot processing time of the lot as a sandwiching lot; a sandwiched lot extraction part 28 extracting a lot wherein even a time obtained by adding the arrangement time of the sandwiching lot and the arrangement time of the next lot can be processed within the lot processing time of the lot as a sandwiched lot when sandwiching the sandwiching lot; and a sandwiching set pattern generation part 30 dividing the lot processing time of the sandwiched lot into two, and sandwiching the lot processing time of the sandwiching lot in between the divided times to generate the set pattern. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a device pattern generation device, and more particularly to a device pattern generation device that generates a device pattern relating to processing of a plurality of types of objects in a processing step of processing a plurality of types of objects in units of lots.

  When a plurality of types of objects are processed on a production line on a production line, the timing for processing each object, the processing order, the lot size that is the number of objects processed at one time, and the like are determined. Such a procedure for processing a plurality of types of objects is referred to as generation or creation of a device pattern or generation or generation of a device pattern.

  For example, Patent Document 1 describes a method for creating an in-process pattern according to a predetermined criterion. Here, the work-in-process pattern is one cycle, and the preset number is set to the maximum lot cycle. Out of the setup from the start of processing of a certain object to the processing of the next target, The time until completion is the minimum lot processing time, and the lot cycle is determined so that there is no loss of waiting time for processing due to external setup. Create the in-process pattern by determining the number of reserved seats for the objects to be processed by the "Replenishment Kanban System" and the number of free seats for the objects to be processed by the "Signal Kanban System", which is a quantitative irregular-type in-process method. Is disclosed.

JP 2006-221279 A

  Conventionally, in the lot production process, for example, a signal kanban mechanism is set in which a certain lot stock amount is set for all parts or products and the lot stock amount is set when the lot stock amount falls below this lot stock amount. With the recent increase in the number of products and small lots, with this conventional device method, devices of many types of products are concentrated at a certain timing, and it is becoming increasingly difficult to deal with production. According to the method described in Patent Document 1, it is possible to create a device instruction by patterning, but the device pattern here is basically an efficient line after taking into account the constraints of equipment and the like. It is created so that the amount of inventory is minimized.

  By the way, in an actual manufacturing site, it may be necessary to create a plan for a very small amount of lot parts due to the requirements of the parts or products, facilities, quality, personnel, and the like. In such a case, the line is stopped for a certain period of time due to equipment restrictions in order to take the time necessary to perform the setup in advance to process the small lot parts, thereby reducing the production efficiency of the line. . In addition, in order to reduce the influence of setup time, it may be possible to intentionally create an excessive lot such as twice the required amount or four times the required amount, but this increases the processing time and reduces the inventory amount. It becomes larger than necessary and becomes inefficient in terms of space, pallet, etc.

  In the device pattern generation method of the prior art, an effective device pattern cannot be generated when there are such small lot parts.

  An object of the present invention is to provide a mechanism pattern generation device that can avoid stopping a line when a small lot part of a certain amount or less is generated on a mechanism pattern.

  The device pattern generation device according to the present invention is a device that generates a device pattern relating to processing of a plurality of types of objects in a processing step of processing a plurality of types of objects in units of lots, A storage device that stores the lot processing time, which is the time required to process the lot, and the setup time, which is the time required in advance to process the lot, and generates the initial mechanism pattern using a predetermined standard procedure And a lot processing time and a setup time for each lot in the initial setup pattern from the storage device, a lot processing time of an arbitrary target lot, and a setup time of a next lot set up next to the target lot When the setup time of the next lot exceeds the lot processing time of the target lot, the target lot is In the initial device pattern, each lot other than the sandwiched lot is sandwiched and the lot processing time and the setup time for each of the target lots are acquired from the storage device in the initial device pattern. Compare the lot processing time of the target lot with the setup time of the next lot set next to the target lot and the total setup time, which is the sum of the setup time of the target lot, and the processing time of the target lot When the time exceeds the total setup time, the sandwiched lot extraction means for sandwiching and extracting the target lot as a lot and dividing the lot processing time of the sandwiched lot into two, and A method to generate a trapping mechanism pattern by inserting the lot processing time Characterized in that it comprises a and.

  Further, in the mechanism pattern generation apparatus according to the present invention, the sandwiching mechanism pattern generation means includes the preceding lot when the sandwiching lot is divided into a preceding lot that is sandwiched and placed before the lot and a subsequent lot that is placed after the sandwiching lot. A means for allocating the processing time and the processing time of the succeeding lot to calculate the setting position of the sandwiched lot, acquiring the setup time of the subsequent lot to be placed next to the sandwiched lot from the storage device, and setting up the sandwiched lot The sum of the time and the setup time of the following lot is inserted and subtracted from the processing time of the lot, and the remaining margin time is divided into two according to a predetermined standard, and distributed to the preceding lot and the succeeding lot respectively. It is preferable to include means for calculating the position of the sandwiched lot by setting the processing time of

  Moreover, in the device pattern generation device according to the present invention, it is preferable that the sandwiching device pattern generation means sets the setup time for the next subsequent lot to zero for the last lot of the initial device pattern.

  Further, in the device for generating a pattern according to the present invention, the sandwiching device pattern generating means sandwiches a lot extracted as a sandwiched lot, and when there are a plurality of candidate lots, a plurality of trapped lots are placed in the trapping lot. It is preferable to include means for calculating each of the candidates and identifying the candidate closest to the setting position of the initial setting pattern holding lot among the plurality of calculated holding positions as a lot.

  With the above configuration, the device pattern generation device generates an initial device pattern according to a predetermined standard procedure, and in this initial device pattern, the lot processing time of an arbitrary target lot and the next lot to be set next to the target lot. The setup time is compared, and a lot whose setup time of the next lot exceeds the lot processing time of the target lot is extracted as a sandwiched lot. On the other hand, for the target lots other than the sandwiched lot, the lot processing time of any sandwiched target lot is compared with the setup time of the next lot to be placed next and the total setup time, which is the sum of the setup time of the sandwiched lot. Then, a lot whose processing time of the sandwiched target lot exceeds the total setup time is sandwiched and extracted as a lot. Then, the lot processing time of the sandwiched lot is divided into two, and the sandwich processing pattern is generated by sandwiching the lot processing time of the sandwiched lot between the divided lots.

  If the target lot is a small lot with a short processing time, and the setup for the next lot cannot be performed within the processing time, the line is stopped for the setup for the next lot. According to the above configuration, such a lot is extracted as a sandwiched lot, and on the other hand, the lot processing time of the sandwiched target lot, the setup time of the next lot to be placed next, and the setup time of the sandwiched lot The total setup time is compared, and a lot that is sandwiched and the processing time of the target lot exceeds the total setup time is extracted. Such a lot is a large lot having a sufficient processing time, and the setup of the sandwiched lot and the setup of the next lot can be absorbed within the processing time. Therefore, such a lot is sandwiched and extracted as a lot, the lot processing time is divided into two, and the lot processing time of the sandwiched lot is sandwiched between the divided lots to generate a trapping mechanism pattern. As a result, it is possible to generate a mechanism pattern that can avoid stopping the line when a small lot part of a certain amount or less is generated.

  In addition, in the device pattern generation device, the sum of the setup time of the sandwiched lot and the setup time of the subsequent lot is sandwiched and subtracted from the processing time of the lot, and the remaining margin time is divided into two according to a predetermined criterion, and each preceding The processing time of the preceding lot is determined by allocating to the lot and the succeeding lot, and the setting position of the sandwiched lot is calculated. As one of the predetermined criteria, one that equally divides the remaining margin time into two can be used. Thus, since the remaining margin time is distributed to the preceding lot and the succeeding lot, it is possible to obtain a device pattern having an appropriate margin time.

  In the device pattern generation apparatus, the setup time for the next subsequent lot is set to zero for the last lot of the initial device pattern. This makes calculations easier.

  In addition, when there are a plurality of sandwiched lot candidates in the device pattern generation device, the device location of the sandwiched lot is calculated for each of the plurality of sandwiched lot candidates, and the initial device among the calculated plurality of sandwiching positions. The candidate closest to the setting position of the sandwiched lot of patterns is sandwiched and specified as a lot. As a result, the processing of the sandwiched lot can be prevented from being delayed more than necessary.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the line to which the device pattern is applied is described as a press line, but a line other than the press line may be used as long as a plurality of types of objects are processed in units of lots. For example, it may be a painting line, an assembly line, a heat treatment line, a surface treatment line, an inspection line, or the like. The numbers such as the lot size, the lot processing time, and the setup time described below are examples for explanation, and of course, other numbers may be used.

  FIG. 1 is a diagram illustrating a configuration of the device pattern generation apparatus 10. This device pattern generation apparatus 10 is a press factory having a plurality of lines. When producing a plurality of types of parts, when to process which type of parts for each line, the timing, order of the processing, It is a device that generates a device pattern that determines the lot size and the like that are processed at one time. That is, the device pattern generation apparatus 10 is a device having a function of generating a device pattern related to processing of a plurality of types of objects in a processing step of processing a plurality of types of objects in units of lots. In particular, here, when a small lot part of a certain amount or less is generated on the device pattern, the device has a function of correcting and generating the device pattern so as to avoid stopping the line. The device pattern generation apparatus 10 can be configured by a computer suitable for processing a production plan or the like.

  The device pattern generation apparatus 10 includes a CPU 12, an input unit 14 such as a keyboard, an output unit 16 such as a display or a printer, and a storage device 18 that stores programs, various data, and the like. Moreover, it is good also as what has a communication control part for connecting with a production line with LAN (Local Area Network). These elements are connected to each other by an internal bus.

  The storage device 18 has a function of storing various types of data necessary for generating a device pattern in addition to storing a program for generating a device pattern as described above. In particular, here, the lot processing time data 20 that is the time required to process the lot and the setup time data 22 that is the time required in advance to process the lot are stored in association with each lot. To do. In addition, for example, when there are a plurality of lines, the operation time data of the lines are stored in association with each line. These data are input from the input unit 14 by an operator's manual input or the like, are associated with a predetermined search key, and are stored in the storage device 18 using a hierarchical structure or the like.

  FIG. 2 is a diagram showing an example of data related to the lot processing time. As will be described later, this figure is a diagram showing an initial device pattern when four types of lots are processed in “Line 1”, which includes data on lot processing times. Here, the production start time and the production end time are shown for each lot product number in association with the lot product number that is a number for distinguishing lots, and lot processing time = (production end time) − (production start time). . For example, the lot processing time of the lot product number a is 60 minutes, the lot processing time of the lot product number b is 10 minutes, the lot processing time of the lot product number c is 50 minutes, and the lot processing time of the lot product number d is 80 minutes. As described above, the storage device 18 stores data related to the lot processing time of each lot product number in association with the lot product number.

  FIG. 3 is a diagram illustrating an example of data related to the setup time. Here, the outer setup time and the inner setup time of each lot product number are shown in association with each lot product number. Here, the setup time is a time required to shift to the processing of a certain lot product number, and can be distinguished into an internal setup time and an external setup time as shown in FIG. The internal setup time is the setup time that can be absorbed in the process after the lot part number starts processing, and the external setup time is the setup time required in advance when the lot part number starts processing. It is. Therefore, if the external setup time of a lot product number can be performed within the processing time of the lot product number that is in progress before the processing of the lot product number, the influence of the external setup time does not appear in the operation time of the line. On the other hand, if the outside setup time of a lot product number cannot be performed within the processing time of the lot product number in progress before the processing of the lot product number, the lot product number is excluded before the processing of the lot product number. The line is temporarily stopped until the setup process is completed, and the amount of time affects the line operation time.

  In the example of FIG. 3, the internal setup time of each lot of lot product numbers a, b, c, and d is 5 minutes, and the external setup time of each lot of lot product numbers a, b, and c is 25 minutes. It is indicated that the external setup time of the lot product number d is 35 minutes. As described above, the storage device 18 stores data related to the setup time of each lot product number in association with the lot product number.

  FIG. 4 is a diagram showing an example of data relating to the operating time of each line in the press factory. Here, line 1 operates from 8:00 to 18:00, and line 2 operates directly from 8:00 to 12:00 and from 13:00 to 18:00. The configuration is shown. Thus, the storage device 18 stores data relating to the operating time of each line in association with the line.

  Returning to FIG. 1 again, the CPU 12 sets the initial lot pattern generation unit 24 for generating an initial mechanism pattern in accordance with a predetermined standard procedure, and the setup time of the next lot in each of the lots constituting the initial mechanism pattern. When the sandwiched lot is sandwiched between the lots that are not included in the lot processing time of the lot and the sandwiched lot extractor 26 that extracts the sandwiched lot as a sandwiched lot, Even if the setup time and the setup time of the next lot are combined, a lot that can be processed within the lot processing time of the lot is sandwiched and extracted as a lot, and the lot processing time of the sandwiched lot is divided into two. Divide and work in process by inserting the lot processing time of the sandwiched lot between the divided parts Configured to include a gimmick pattern generation unit 30 sandwiching generating a pattern.

  Further, the sandwiching device pattern generation unit 30 includes a device position calculation module 32 that calculates the device position of the sandwiched lot according to a predetermined standard when the sandwiched lot is divided into two, and a plurality of sandwiched lot candidates. A sandwiched lot specifying module 34 for identifying a lot sandwiched according to a predetermined standard is configured.

  Such a function can be realized by software, specifically, by executing a corresponding device pattern generation program. A part of such functions may be realized by hardware.

  The operation of the above configuration, particularly each function of the CPU 12, will be described in detail with reference to the flowchart of FIG. 5 and FIGS. 6 to 10 showing specific examples of device patterns. FIG. 5 is a flowchart showing a procedure for generating a trapping device pattern in which a processing time for a small lot is sandwiched between processing times for a large lot. Each procedure here corresponds to each processing procedure of the corresponding device pattern generation program. 6 to 10 are diagrams for explaining each procedure of the flowchart of FIG. 5 using a specific example of a device pattern. Here, description will be made using the initial mechanism pattern and the processing time of each lot described with reference to FIG. 2, and the external setup time of each lot described with reference to FIG.

  In the press factory, when a production plan for each lot product number on a certain day is made, the data is acquired by input from the input unit 14 of the device pattern generation device 10 and stored as various data in the storage device 18. Then, an initial device pattern is generated by a predetermined standard procedure (S10). This step is executed by the function of the initial device pattern generation unit 24 of the CPU 12. As a standard procedure, based on the facility capacity of each line of the press factory, the stock status of the materials, the shipping schedule of each lot part number, etc., if there is no particular problem, for example, the installation order can be determined according to the order of the production plan. .

  Therefore, FIG. 2 is a diagram showing a state in which the initial product pattern is formed by setting the lot product numbers a, b, c, and d in this order according to the production plan. At this stage, the setup time of each lot product number is not considered. It can be seen from FIG. 4 that this process can be performed either in line 1 or in the first half of line 2. Which line is used can be determined by the facility capacity of the line or the like. When any line is possible, it can be determined according to a predetermined operation priority of the line. Here, it is assumed that the line 1 is decided to be used.

  FIG. 6 is a diagram illustrating the initial device pattern of FIG. 2 as time elapses. Here, time is taken on the horizontal axis. The initial mechanism pattern is as follows. That is, the production of the lot product number a is started from 8:00, which is the operation start time of the line 1, and the lot processing time is 60 minutes, so that the production ends at 9:00. Subsequently, the production starts at 9:00 for the lot product number b, and the lot processing time is 10 minutes. Therefore, the production is finished at 9:10. Since the lot product number c starts production at 9:10 and the lot processing time is 50 minutes, the production ends at 10:00. Next, the production of the lot product number d starts at 10:00 and the lot processing time is 80 minutes, so that the production ends at 11:20. As described above, the initial device pattern is generated as an arrangement in which the lot processing time of each lot product number is arranged without any gap time from the end of production to the next production start in the order of the production plan.

  By the way, according to FIG. 3, the external setup time of the lot product number c is 25 minutes. The lot product number c is set after the lot product number b, and the lot processing time of the lot product number b is 10 minutes as described above. Therefore, in the initial mechanism pattern, 25 minutes, which is the external setup time for the lot product number c, cannot be completed in the lot processing time for the lot product number b, and the extra 15 minutes protrudes. In other words, if the production is started with the original construction pattern, the line will be stopped due to the external setup time of the lot product number c from 9:10 when the production of the lot product number b is completed to at least 9:25. Become.

  In order to avoid this, the following processing is performed. In the following, it is assumed that the inner setup time is a content that can be sufficiently processed within the processing time of each lot. Therefore, in the following, only the external setup time is considered as the setup time.

  Returning to FIG. 5, when the initial device pattern is generated, the sandwiched lot is extracted (S12). This step is executed by the function of the sandwiched lot extracting unit 26 of the CPU 12. The sandwiched lot is a lot whose setup time of the next lot is longer than the lot processing time of the lot, such as the lot product number b described above. That is, for any target lot, when the setup time of the next lot processed next to the target lot exceeds the lot processing time of the target lot, the target lot is extracted as a sandwiched lot.

  Specifically, for each lot product number, [(lot processing time that is the processing time of each lot) − (outside setup time of the next processing lot product number of that lot)] is calculated, and the lot whose value is negative Extract the part number.

  Using the data of FIGS. 2 and 3, the calculation results for each lot product number are as follows. Lot product number a: 60 minutes-25 minutes = + 35 minutes. Lot product number b: 10 minutes-25 minutes = -15 minutes. Lot product number c: 50 minutes-35 minutes = + 15 minutes. Lot product number d: 80 minutes-0 minutes = +80 minutes. Here, it is assumed that the lot product number d is the last lot product number and there is no next lot product number.

  According to this calculation result, only the lot product number b has a negative value. Therefore, the lot product number b is extracted as the sandwiched lot.

  Next, the sandwiched lot is extracted (S14). This process is executed by the function of the lot extraction unit 28 sandwiched by the CPU 12. The sandwiched lot is a large lot that can be absorbed within the lot processing time of the lot even if the outside setup time for the next lot of the lot and the outside setup time of the sandwiched lot are combined. In this way, if the lot processing time is sufficient, the lot processing time of the lot is divided and the sandwiched lot is sandwiched between them, and the influence of the external setup time does not affect the operation time of the line. You can

  Here, since the lot to be sandwiched is a lot other than the sandwiched lot, this is referred to as a target lot sandwiched. Among the sandwiched lots, the lot processing time is the total setup time, which is the sum of the setup time of the next lot to be placed next to the sandwiched lot and the setup time of the sandwiched lot that has already been extracted. When exceeding, the target lot is inserted and becomes a lot.

  Specifically, for each lot product number other than the sandwiched lot, [(lot processing time of each lot product number) − {(external setup time of sandwiched lot product number) + (external setup time of the next machining lot product number of that lot product number] )}] Is calculated, and a lot product number having a positive value is extracted.

  Using the data of FIGS. 2 and 3, the calculation results for each lot product number are as follows. Lot product number a: 60 minutes- (25 minutes + 25 minutes) = + 10 minutes. Lot product number c: 50 minutes- (25 minutes + 35 minutes) =-10 minutes. Lot product number d: 80 minutes- (25 minutes + 0 minutes) = + 55 minutes. As described above, here, the lot product number d is the last lot product number and there is no next lot product number.

  According to this calculation result, the lot product number a and the lot product number d are positive values. Accordingly, the lot product number a and the lot product number d are sandwiched and extracted as a lot.

  When the sandwiched lot and the sandwiched lot are extracted in this way, the lot processing time of the sandwiched lot is divided into two, and the sandwiched lot is sandwiched between them to generate a sandwiching device pattern. Generation of the sandwiching device pattern is performed by calculating the sandwiching position and specifying a specific sandwiched lot based on the sandwiching position when there are a plurality of sandwiched lots.

  That is, in FIG. 5, when the sandwiched lot and the sandwiched lot are extracted in S12 and S14, the setting position of the sandwiched lot is calculated (S16). This step is executed by the function of the device position calculation module 32 of the CPU 12. The calculation of the position of the trapped lot is calculation of the time at which the trapped lot is arranged in the lot processing time of the trapped lot.

  As described above, the sandwiched lot is divided into two lots because the lot processing time of the sandwiched lot is incorporated in the lot processing time. Therefore, the part set before the sandwiching lot is set as the preceding lot, and the part set after the sandwiching lot is set as the succeeding lot. The setting position of the sandwiched lot is also a distribution problem between the lot processing time of the preceding lot and the lot processing time of the subsequent lot.

  This distribution can be performed as follows. That is, the sum of the setup time of the subsequent lot to be placed next to the sandwiched lot and the setup time of the sandwiched lot is calculated, and this is subtracted from the processing time of the sandwiched lot. The result is divided into ½ evenly as the remaining margin time, and distributed to the preceding lot and the succeeding lot. That is, the lot processing time of the preceding lot is (outside setup time of the sandwiched lot) + (1/2 of the margin time), and the lot processing time of the succeeding lot is (outside setup time of the subsequent lot) + (room time) 1/2).

  As described above, since there are lot product number a and lot product number d as the sandwiched lot, the setting position of the sandwiched lot is calculated for each. FIG. 7 is a diagram showing the setting position of the sandwiched lot when the sandwiched lot is the lot part number a, and FIG. 8 is a diagram showing the setting position of the sandwiched lot when the sandwiched lot is the lot part number d. It is.

  When the sandwiched lot is the lot product number a, the lot processing time is 60 minutes. Then, the external setup time of the lot product number b which is the sandwiched lot is 25 minutes, and the external setup time of the lot product number c which is the subsequent lot placed next to the sandwiched lot is 25 minutes. Therefore, the remaining margin time is 60 minutes− (25 minutes + 25 minutes) = + 10 minutes. When this is halved and allocated every 5 minutes, the lot processing time of the preceding lot (a-1) when the lot product number a is divided into two is 25 minutes + 5 minutes = 30 minutes, and the subsequent lot (a− The lot processing time of 2) is also 25 minutes + 5 minutes = 30 minutes. Therefore, as shown in FIG. 7, the start position of the sandwiched lot b is 8:30 at the start of production and 8:40 at the end of production.

  If the lot that is sandwiched is the lot product number d, the lot processing time is 80 minutes. The lot setup number b, which is a sandwiched lot, has an outer setup time of 25 minutes. However, since there is no subsequent lot that is sandwiched and placed next to the lot, the outer setup time is 0 minute. Therefore, the remaining margin time is 80 minutes− (25 minutes + 0 minutes) = + 55 minutes. If this is halved and distributed every 27.5 minutes, the lot processing time of the preceding lot (d-1) when the lot product number d is divided into two is 25 minutes + 27.5 minutes = 52.5 minutes, The lot processing time of the subsequent lot (d-2) is 27.5 minutes + 0 minutes = 27.5 minutes. Therefore, as shown in FIG. 8, the setting position of the sandwiched lot b is 10: 42.5 at the start of production and 10: 52.5 at the end of production.

  In the above description, the allocation of the margin time for the preceding lot and the succeeding lot is equally halved, but weighting may be performed according to a predetermined standard depending on circumstances. For example, the margin time may be allocated by weighting according to the difference in the external setup time between the sandwiched lot and the subsequent lot. In some cases, the margin time may be allocated by weighting according to the internal setup time of the sandwiched lot and the subsequent lot.

  Returning to FIG. 5 again, when the setting position of the sandwiched lot is calculated in this way, the sandwiched lot is specified next (S18). This step is executed by the function of the lot specifying module 34 sandwiched by the CPU 12. Needless to say, when there is one sandwiched lot extracted in S14, the lot is regarded as a sandwiched lot. When there are a plurality of sandwiched lots extracted in S14, the placement positions of the sandwiched lots calculated in S16 are compared for the candidates for a plurality of sandwiched lots, and the placement positions of the sandwiched lots in the initial device pattern are determined. The closest candidate is inserted and specified as a lot.

  In the above example, the sandwiched lots extracted in S14 are the lot product number a and the lot product number d. Here, FIG. 9 shows a result of comparing the setting position of the lot product number b, which is the sandwiched lot in the initial setting pattern, with the setting position calculated in FIG. 7 and FIG. As shown in FIG. 9, when the lot sandwiched is the lot product number a, the time difference L1 between the initial position of the lot product number b and the device position of the lot product number b when the lot product number a is sandwiched is: 30 minutes + 10 minutes = 40 minutes. On the other hand, when the lot sandwiched is the lot product number d, the time difference L2 between the initial position of the lot product number b and the device position of the lot product number b when the lot product number d is sandwiched is 50 minutes + 52. 5 minutes + 10 minutes = 112.5 minutes. Therefore, L1 is shorter than L2, and thus the sandwiched lot is specified as the lot product number a.

  In this way, when the sandwiched lot is specified, the trapping position of the sandwiched lot is specified in the sandwiched lot, and the sandwiching pattern is generated (S20). FIG. 10 is a diagram illustrating a state of the generated trapping device pattern. Here, the production end of the last lot product number d is 11:20, which is the same as the initial device pattern shown in FIG. As described above, in the initial mechanism pattern, the outside setup time of the lot part number c could not be absorbed in the lot processing time of the lot part number b, which is a small lot. However, according to the sandwiching mechanism pattern, The setup time can be absorbed in the lot processing time of the lot product number processed before that. As a result, even when a small lot part of a certain amount or less is generated on the device pattern, the processing can be performed without stopping the line.

It is a figure which shows the structure of the device pattern production | generation apparatus in embodiment which concerns on this invention. In embodiment concerning this invention, it is a figure which shows an example of the data relevant to lot processing time. In embodiment which concerns on this invention, it is a figure which shows an example of the data relevant to setup time. In embodiment which concerns on this invention, it is a figure which shows an example of the data regarding the operating time of each line in a press factory. In the embodiment according to the present invention, it is a flowchart showing the procedure of the pinching device pattern generation. In embodiment which concerns on this invention, it is a figure explaining an initial mechanism pattern. In embodiment which concerns on this invention, it is a figure explaining a mode that the setting position of the pinching lot is calculated. In embodiment which concerns on this invention, it is a figure explaining another example which calculates the device position of a pinching lot. In embodiment which concerns on this invention, it is a figure explaining the specific mode of the lot pinched | interposed. In embodiment which concerns on this invention, it is a figure which shows the mode of the produced | generated pinching mechanism pattern.

Explanation of symbols

  10 pattern generation device, 12 CPU, 14 input unit, 16 output unit, 18 storage device, 20 lot processing time data, 22 setup time data, 24 initial mechanism pattern generation unit, 26 sandwiched lot extraction unit, 28 sandwiched lot Extraction unit, 30 sandwiching device pattern generation unit, 32 device position calculation module, 34 sandwiched lot identification module.

Claims (4)

An apparatus for generating a device pattern related to processing of a plurality of types of objects in a processing step of processing a plurality of types of objects in units of lots,
A storage device that stores lot processing time, which is time required to process the lot, and setup time, which is time required in advance to process the lot, in association with each lot;
Means for generating an initial device pattern by a predetermined standard procedure;
In the initial device pattern, the lot processing time and the setup time for each lot are acquired from the storage device, the lot processing time of any target lot is compared with the setup time of the next lot set up next to the target lot, A sandwiched lot extracting means for extracting the target lot as a sandwiched lot when the setup time of the next lot exceeds the lot processing time of the target lot;
In the initial mechanism pattern, each lot other than the sandwiched lot is sandwiched and the lot processing time and the setup time for each target lot as each target lot are acquired from the storage device, and the lot processing time of any sandwiched target lot, The setup time of the next lot to be set next to the sandwiched target lot is compared with the total setup time which is the sum of the setup time of the sandwiched lot, and when the processing time of the sandwiched lot exceeds the total setup time, A sandwiched lot extraction means for sandwiching and extracting a target lot as a lot;
Means for dividing the lot processing time of the sandwiched lot into two and generating a sandwiching pattern by sandwiching the lot processing time of the sandwiched lot between the divided lots;
A device for generating a device pattern, comprising: The device pattern generation device according to claim 1,
The sandwiching pattern generation means is
When the sandwiched lot is divided into a preceding lot that is set before the sandwiched lot and a subsequent lot that is set after the sandwiched lot, the processing time of the preceding lot and the processing time of the succeeding lot are allocated, and the setting position of the sandwiched lot Is a means for calculating
The setup time of the succeeding lot to be placed next to the sandwiched lot is acquired from the storage device, the sum of the setup time of the sandwiched lot and the setup time of the succeeding lot is sandwiched and subtracted from the processing time of the lot, and the remaining margin time is preliminarily determined. A device pattern generation apparatus comprising means for dividing a predetermined lot into two parts and allocating them to a preceding lot and a succeeding lot to determine a processing time of the preceding lot and calculating a device position of the sandwiched lot . The device pattern generation device according to claim 1 or 2,
The sandwiching pattern generation means is
An apparatus for generating a device for patterning, characterized in that a setup time for a subsequent lot of the next lot of the initial device is set to zero. The device pattern generation device according to claim 2,
The sandwiching pattern generation means is
If there are multiple candidate lots that have been sandwiched for the lot extracted as a sandwiched lot, the device location of the sandwiched lot is calculated for each candidate for the plurality of sandwiched lots. A device for generating a device for patterning, comprising means for specifying a candidate that is closest to a device for setting a device in a pattern sandwiched lot as a lot.

Images