JP2008276412A - Process progress management system and process progress management method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make clear the priority of a lot to set up, and to support execution of warehousing work according to a daily warehousing plan. <P>SOLUTION: This process progress management system has: a database means for storing process order related to production of a product, a set up process of the lot, an amount of the products included in the lot, a warehousing plan number and warehousing results number in each data of the product; a comparison means for comparing the beginning process of the lot and the process order stored in the database means; a rearrangement means for rearranging an already set up lot group in order wherein the beginning process is approximate to a final process based on a comparison result by the comparison means, and obtaining allocation order of priority order; a necessary number calculation means for calculating a warehousing necessary number in each data based on a difference between the warehousing results number and the warehousing plan number stored in the database means; and a priority order determination means for allocating the amount of the products included in each lot to the warehousing necessary number according to the allocation order, and determining work priority order of the lot based on the allocated date. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a process progress management system and a process progress management method that clearly indicate the priority order of lots to be processed in a manufacturing site having a plurality of manufacturing processes such as semiconductors, liquid crystals, and electronic components.

  Lots to be processed at manufacturing sites with multiple manufacturing processes such as semiconductors, liquid crystals, and electronic parts are determined by the schedule function, first-in first-out function, and the expected date of arrival (delivery date) assigned to each lot. A technique for outputting instruction information to is known.

For example, in Patent Document 1, for a product that has already been processed in the manufacturing process, the expected date of entering the warehouse is calculated for each lot, and the catch-up instruction information is output for the lot that is behind the predetermined scheduled date of entering the warehouse. Yes.
JP 2004-295188 A

  However, in a factory that manufactures offline, manufacturing operations may not always be performed as scheduled. For example, there is a case where an operator mistakenly processes a low-priority intermediate process lot even though the worker plans to process the final process lot. In such a case, in the prior art, since a lot with a margin with respect to the planned entry date is postponed, even if there is a lot close to the final process, The priority is lowered, and as a result, the Kurari plan cannot be achieved. That is, there has been a problem that the progress of manufacturing work cannot be flexibly handled.

  Accordingly, an object of the present invention is to provide a process progress management system and a process progress management method that can easily grasp the priority order of lots to be processed and support the execution of a storehouse operation for a daily storehouse plan.

    A process progress management system according to the present invention is connected to a priority lot determination device that determines a priority order in a manufacturing operation for a plurality of lots in the manufacturing process of a product managed in units of lots, and the priority lot determination device. And a priority lot display device that acquires and displays the determined priority order, and the priority lot determination device is included in the process sequence relating to the manufacture of the product, the in-process process of the lot, and the lot. The database means for storing the quantity of the product, the number of planned warehouses and the number of actual warehouses for each date of the product, and the comparison for comparing the process sequence stored in the database means with the in-process of the in-process lot And the priorities based on the comparison result by the comparing means, and sorting the in-process lot group in the order in which the in-process process is closer to the final process. Reordering means for obtaining an allocation order; necessary number calculating means for calculating the required number of warehouse entries on each date based on the difference between the number of planned warehouse entries and the actual number of warehouse entries stored in the database means; Priority order determining means for allocating the quantity of the product included in each lot according to the allocation order to the required number of warehouses on each date, and determining the priority in the manufacturing operation of the lot based on the allocated date; It is characterized by having.

  In the process progress management method according to the present invention, a computer having a database for storing product information is determined for a plurality of lots in a manufacturing process of products managed in units of lots, and priorities in manufacturing operations are determined. A process progress management method, comprising: a process sequence acquisition step of acquiring a process sequence in manufacturing of the product from the database; an in-process process of a lot related to the product from the database; and a quantity of the product included in the lot The lot inventory information acquisition step for acquiring the lot inventory information, the acquired in-process process and the process sequence are compared, the in-process lot group is rearranged in order of the in-process process from the last process, and the priority Reordering step to determine the order of allocation of the products, and the number of plans to store in each date of the product from the database Based on the difference between the acquired Kurashiri plan acquisition step, the Kuradori actual acquisition step for acquiring the Kurashiri actual number on each date of the product from the database, and the acquired Kurashiri actual number and the Kurashiri plan number A required number calculating step for calculating the required number of warehouses on each date, and assigning the quantity of the product included in each lot to the required number of warehouses on each date according to the order of allocation, and assigning to the allocated date And a priority order determining step for determining a priority order in the manufacturing operation of the lot, and a priority lot display step for displaying the determined priority order.

  According to the present invention, there are provided a process progress management system and a process progress management method capable of easily grasping priorities of lots to be processed and supporting execution of a storehouse operation for a daily storehouse plan.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an example of the overall configuration of an embodiment of the present invention. The process progress management system according to this embodiment includes a priority lot determination device 1 and a priority lot display device 2, and each device is connected via a bus 3.

  The priority lot determination apparatus 1 is a computer including a CPU 11 that performs arithmetic processing, a main storage unit 12 that is a development destination of various programs, an auxiliary storage unit 13 that stores programs, and a database unit 14 that stores various data. .

  The CPU 11 reads the lot priority determination program 131 stored in the auxiliary storage unit 13 into the main storage unit 12 and executes it at the start of the day work and when a new lot is input, and the database unit 14 at that time. Priority lot information is created using the information in

Further, the database unit 14 includes, for example, a manufacturing flow information table 141, a lot stock information table 142, a warehouse entry plan table 143, a warehouse entry record table 144, a priority lot information table 145, and the like. The stored contents of each table are as follows.
The manufacturing flow information table 141 stores the order of manufacturing processes for each product.
The lot stock information table 142 stores the location of a lot (in-process), the number of stocks (in-process), and state information (such as availability of goods, availability of warehouse) for each lot.
The Kurairi plan table 143 stores the number of Kurairi plans for each product on each date.
The warehouse entry record table 144 stores the quantity of warehouses entered for each product on each date (the number of warehouse entries).
The priority lot information table 145 stores lot priority information determined for each product.

The priority lot display device 2 is a computer including an input unit 21 and a display unit 22, and the number of installed devices is arbitrary.
The input unit 21 accepts various pieces of information such as target product information, lot input date, and input number input from the user interface such as a keyboard by the manufacturing manager, and outputs the information to the priority lot determination device 1 as a connection destination.
The display unit 22 displays the lot information rearranged based on the store entry target category determined by the priority lot determination device 1. Specifically, among the lots that can be started, the smallest lot in the warehouse entry category is displayed as the highest priority lot. The production manager gives an in-process instruction to the person in charge of operation based on the priority lot display. The display method is not limited to the screen display.

  FIG. 2 is a functional block diagram for explaining the outline of processing of the priority determination program 131 in the priority lot determination device 1. The processing of the priority determination program 131 is roughly divided into determination processing, rearrangement processing, necessary number calculation processing, allocation processing, and new input processing. Hereinafter, each process will be described in detail.

1. Judgment processing The priority lot determination device 1 determines the priority order of lots at the start of work on the day and when a new lot is input, but the processing differs depending on when the device is activated. The determination process is a process for determining the allocation timing. If the determined result is the start of work on the day, the rearrangement process is performed, and if the lot is newly input, a new input process is performed. Specifically, it is determined whether or not a new lot has been input from the priority lot display device 2, and the allocation algorithm is switched depending on the time of activation.

2. Rearrangement process The rearrangement process is a process of rearranging already input lots in order from the closest to the final process, and setting an allocation order that is a premise of the priority order.
First, the process information of the target product and the inventory location information (in-process) for each process are acquired from the manufacturing flow information table 141 and the lot inventory information table 142, respectively. Specific examples of the acquired information are shown in Table 1.

Here, LOT001 of LOT001 (100) is the lot number assigned to the unit of goods, and the numbers in parentheses indicate the number of parts (number of wafers, number of sheets. The unit follows the Kuroi plan).
Further, the lot of the reverse color (LOT008 (120)) represents a lot that has already been registered as a scrap (unusable).
Further, the input date information of each lot is acquired from the lot stock information table 142. Specific examples of the acquired information are shown in Table 2.

Next, an allocation order is set for the lot group excluding the lots that cannot be handled. Allocation setting conditions can be changed, but basically, the order of rearrangement is set as 1) the order close to the final process, and 2) the order of input date. Table 3 shows the result of setting the allocation order based on the information in Tables 1 and 2.

  If the lots in the same process have the same insertion date, the lot NO order may be added as a condition if the lot numbers are issued in the order in which they are entered by automatic numbering or the like. Moreover, you may add conditions, such as order with many stock numbers.

3. Necessary number calculation process The necessary number calculation process is a process of calculating the number of unsuccessful plans for the previous day by calculating the number of unsuccessful plans up to the previous day by comparing the storey plan and the previous record of the previous year.
Table 4 shows a specific example of the Kurairi plan acquired from the Kurairi plan table 143.
Here, 3/21 and beyond are not planned.

For example, at the end of 3/10, if the number of planned warehouses from the beginning of the month is 750, the number of unsuccessful plans up to the previous day is 250.
Therefore, the required number in 3/11 is corrected to 350, which is 250 added to the number of planned entrances. The results of correcting Table 4 are shown in Table 5.

4). Allocation process The allocation process is based on the allocation order obtained in the rearrangement process and the planned number of warehouses for each day corrected in the required number calculation process. This is a process of setting a certain day (hereinafter referred to as “date of entry”). Further, the store entry target classification is obtained from the set store entry date, and stored in the priority lot information table 145 together with the store entry date.

Based on the results of the rearrangement process (Table 4) and the required number calculation process (Table 5), the date for entering the warehouse is set as shown in Table 6.

For example, if the expected date of entry is 3/11, the required number is 350 from the required number calculation process. When manufacturing is performed in the priority order obtained by the rearrangement process, the required number can be satisfied by the total number of stocks of LOT010 and LOT001 (300) and a part of the number of stocks of LOT006 (50).
Therefore, the date of entry into LOT010, LOT001, and LOT006 is 3/11.
If the planned date of entering the warehouse is different within the same lot, such as LOT006, the date closer to the current day is set as the date of entering the warehouse.
Also, the warehouse entry classification is obtained as “(date of warehouse entry) − (today) +1”. That is, the current day is set to 1, the next day is set to 2, and the next day is set to 3.

Table 7 shows the result of obtaining the warehouse entry classification from the warehouse entry date of each lot.

  Here, LOT003 and LOT012 are set to 99999, which is a value that cannot be obtained as a store entry target category, because the store entry date has not been set. Therefore, other values (for example, 10) may be used as long as they do not affect the set priority order.

  The store entry target date and store entry target category obtained as described above are registered in the priority lot information table 145. Accordingly, the manufacturing manager can easily grasp the priority order of the lots to be processed from the priority lot determination device 1 by inputting the target product number or the like from the priority lot display device 2.

5. New input process The new input process is performed when the new lot input is instructed from the priority lot display device 2, the number of stocks included in the already input lot, the store entry plan evacuated immediately before the allocation on the day, and the input time This is a process of assigning the amount of input from the past record of Kurano.

When assigning, first of all, the warehouse entry record at the time of introduction and the number of entries in the same day for the target product are obtained, and the previous entry is compared with the previous entry, and from that difference, Correct the plan. Then, it is applied to the warehouse entry plan corrected in the order of the number of in-process inventory and the number of parts in the newly introduced lot, and the warehouse entry date and the warehouse entry classification of the lot to be introduced are set. Note that the allocation to the in-process inventory may remain set at the start of the day's work.
Moreover, the assigned warehouse entry classification is registered in the priority lot information table 145 together with the warehouse entry date.

For example, if Kurashiri plan in 4/1 is Table 8,

If “there are more than 150 parts up to the previous day and the inventory is already in progress and the in-process inventory is 0”, the lot to be input on 4/1 is processed first, but the required number of 4/1 is 0. Therefore, the date of entry into the warehouse is 4/2 the next day (the entry into the warehouse is 2 for “4 / 2-4 / 1 + 1”).
In addition, if “there are more than 150 parts up to the previous day and the inventory in progress is 100”, the lot to be input on 4/1 is processed after the inventory in progress. The day is 4/3 (the warehouse entry classification is “4 / 3-4 / 1 + 1” is 3).
In addition, if “150 parts are insufficient until the previous day and the in-process inventory is 0”, the lot to be input on 4/1 is processed first, so the target date is 4/1 on the current day. (Kurairi target classification is “4 / 1-4 / 1 + 1” is 1).

  Next, the processing of the lot priority determination program 131 will be described in detail with reference to FIGS. 3 and 4 are flowcharts showing a specific example of the priority lot determination process. Steps S310 and S311 are continuous processing.

First, inventory information and process information (in-process) for each in-process lot are acquired from the lot inventory information table 142 (step S301).
Next, the input date information of each lot is acquired from the lot stock information table 142 (step S302).
Next, the in-process processes of the lots that can be flowed are applied to the process order defined in the manufacturing flow information table 141, and the lot group is rearranged in the order closer to the final process (step S303).
Next, a storehouse plan for the current month and after is acquired from the storehouse plan table 143 (step S304).
Next, the storehouse record from the beginning of the current month is acquired from the storehouse record table 144 (step S305).
Next, the number of unsuccessful plans is calculated by comparing the Kurairi plan and the Kurairi record (step S306).
Next, the warehouse entry plan is corrected in consideration of the plan unachieved number calculated in step S306, and the warehouse entry plan number for each date is obtained (step S307). Hereinafter, the date is represented by a variable X, and the number of Kurashiri plans on each date is represented by the number of Kurashiri plans (X).
Next, the current day date is substituted into the variable X (step S308).
Next, from the lot group rearranged in step S303, the lot with the highest allocation order is set as an allocation process target (hereinafter referred to as “target lot”), and the number of stocks is substituted into the variable Y (step S309). .
Next, the warehouse entry date for the target lot is initialized as unset (step S310).

Next, it is determined whether or not the allocation process to all the miscible lots has been completed or the process has been performed for all dates in the warehouse plan (step S311).
Here, if there is a lot that has not been assigned, or if there is an unprocessed date in the warehouse plan, the process proceeds to step S312.
On the other hand, if it is determined that the allocation process to all the miscible lots has been completed, or that all dates in the warehouse plan have been processed, the process proceeds to step S323.

In step S312, it is determined whether or not the number of planned stores (X) is greater than zero.
Here, if the number of planned entrances (X) is greater than 0, the process proceeds to step S313. On the other hand, if the number of planned stores (X) is 0, the process proceeds to step S322.

In step S313, it is determined whether or not the date for entering the warehouse is set for the target lot.
Here, if the target date for storage is not set, the date stored in the variable X is set as the target date for storage of the target lot (step S314), and the process proceeds to step S315.
On the other hand, when the date for entering the warehouse has been set (when the planned date for entering the warehouse is different for the same lot as a result of the allocation process according to the required number of each date), the process proceeds to step S315.

In step S315, it is determined whether or not the number of stocks stored in the variable Y is larger than the planned number of stores (X).
Here, when the number of stocks stored in the variable Y is larger than the number of planned stores (X), the number obtained by subtracting the number of planned stores (X) from the variable Y is substituted into the variable Y (step S316), The process proceeds to step S317.
On the other hand, if the number of stocks stored in the variable Y is equal to or less than the planned number of stores (X), the process proceeds to step S318.

  In step S317, assuming that the allocation process has been completed for the required number of dates stored in variable X, the next day date (X + 1) is substituted into variable X, and the remaining inventory of the target lot stored in variable Y The process returns to step S311 in order to set the expected date of entering the warehouse.

In step S318, it is determined whether or not the number of stocks stored in the variable Y is smaller than the planned number of stores (X).
Here, when the number of stocks stored in the variable Y is smaller than the number of planned stores (X), the number of stocks stored in the variable Y is subtracted from the number of stored plans to the number of planned stores (X). Substitution is performed (step S319), and the process proceeds to step S321.
On the other hand, when the number of stocks stored in the variable Y is equal to the number of planned stores (X), the next day date (X + 1) of the date stored in the variable X is assigned to the variable X as the target date of the allocation process. (Step S320), the process proceeds to step S321.

In step S321, the next lot in the priority order is set as the target lot, the stock quantity is substituted into the variable Y, and the process returns to step S311 in order to perform allocation to the target lot.
In step S322, the next day (X + 1) of the date stored in the variable X is assigned to the variable X as the target date of the allocation process, and the process returns to step S311.
In step S323, the calculated storage target classification is set for the lot for which the storage target date has been set, and the process ends.

FIG. 5 is a flowchart showing a specific example of a new lot input process.
First, the warehouse entry record from the beginning of the month to the time of introduction is acquired (step S501).
Next, the number of stocks of the luxury lot is acquired from the lot stock information table 142 (step S502).
Next, a warehouse entry plan for the current month and after is obtained from the warehouse entry plan table 143 (step S503).
Next, the number of warehouse entries at the time of entry obtained from the warehouse entry table 144 and the number of warehouse entries from the previous day to the previous day are obtained, and this is compared with the previous day's warehouse entry plan. The warehouse entry plan after that day is corrected (step S504).

Next, the in-process inventory quantity is applied to the warehouse entry plan after the corrected day (step S505).
Next, an unassigned warehouse entry date is acquired and set as an input warehouse entry date (step S506).

Next, it is determined whether or not the warehouse entry date has been set for the new entry (step S507).
Here, if the target date for storage is set, the number of parts in the newly input lot is applied to the corrected storage plan, and the target date and the target category are set for the input lot. (Step S508), and the process ends.
On the other hand, if the target date is not set, that is, if the newly entered lot is not assigned as the required quantity, the value that does not affect other target items It sets as a division (step S509), and ends processing.

  By using an algorithm different from the allocation on the day when a lot is newly introduced, it is not necessary to allocate the already-processed lot again. That is, in the case of a new input, it is not necessary to process anything for a lot that has already been input, and only a lot that is newly input is assigned.

  Since the priority order of lots is set and displayed on the priority lot display device 2 as described above, the manufacturing manager can easily grasp the lots to be preferentially processed and can instruct the person in charge accurately. it can. Also, it takes a short time to display the priority lot information until it is displayed. Furthermore, by performing the allocation process for each lot every day, it is possible to flexibly respond to the progress of the work, and to support the execution of the storehouse work for the daily storehouse plan.

  The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the technical idea of the present invention. For example, in the above embodiment, the daily plan is used as a basis, but the present invention can also be applied to a monthly plan. It can also be used to manage wafers and liquid crystal panels by changing the required units. In addition, the store entry date and store entry classification are stored in the priority lot information table 145 and then displayed on the priority lot display device 2. However, as a configuration for output to the priority lot display device 2 during the allocation process. Also good.

The figure which shows the example of whole structure of the process progress management system which concerns on one Embodiment of this invention. The functional block diagram explaining the outline | summary of the process of the priority determination program 131 which concerns on one Embodiment of this invention. The flowchart which shows the specific example of the lot priority determination process which concerns on one Embodiment of this invention. The flowchart which shows the specific example of the lot priority determination process which concerns on one Embodiment of this invention. The flowchart which shows the specific example of the process at the time of new lot injection | pouring which concerns on one Embodiment of this invention.

Explanation of symbols

1 ... priority lot determination device, 2 ... priority lot display device,
11 ... CPU, 12 ... main storage unit, 13 ... auxiliary storage unit,
14 ... Database section
21 ... Input unit, 22 ... Display unit,
131 ... priority determination program,
141 ... Manufacturing flow information table, 142 ... Lot inventory information table,
143 ... Kurairi plan table, 144 ... Kurairi results table,
145 ... Priority lot information table.

Claims (4)

A priority lot determination device that determines the priority in manufacturing operations for a plurality of lots in the manufacturing process of products managed in lot units;
A priority lot display device connected to the priority lot determination device to obtain and display the determined priority order;
The priority lot determination device is
A database means for storing a process sequence relating to the manufacture of the product, a work-in-process of the lot, a quantity of the product included in the lot, a planned number of purchases and a number of actual purchases in each date of the product;
A comparison means for comparing the process sequence stored in the database means with the in-process process of the in-process lot;
Based on the comparison result by the comparison means, the in-process lot group is rearranged in the order in which the in-process process is closer to the final process, and the rearrangement means for obtaining the priority order assignment;
Necessary number calculating means for calculating the required number of warehouse entries on each date based on the difference between the number of planned warehouse entries and the actual number of warehouse entries stored in the database means;
Priority determining means for allocating the quantity of the product included in each lot according to the allocation order to the required number of warehouses on each date, and determining the priority in the manufacturing operation of the lot based on the allocated date When,
A process progress management system characterized by comprising:   2. The process progress management system according to claim 1, wherein the priority is determined by a predetermined calculation from the assigned date as the date to be assigned to the store. A process progress management method in which a computer including a database for storing information on the product determines a priority order in a manufacturing operation for a plurality of lots set in a manufacturing process of a product managed in lot units,
A process order obtaining step for obtaining a process order in manufacturing the product from the database;
Lot inventory information acquisition step of acquiring lot inventory information including the in-process of the lot related to the product from the database, the quantity of the product included in the lot,
Comparing the acquired in-process with the process order, rearranging the in-process lot group in the order in which the in-process is closer to the final process, and obtaining the priority order,
Kurashiri plan acquisition step for obtaining the number of Kurashiri plans for each date of the product from the database;
A storehouse record acquisition step for acquiring the storehouse record number for each date of the product from the database;
A required number calculating step of calculating the required number of warehouses for each date based on the difference between the number of actual warehouses acquired and the number of planned warehouses;
A priority determination step of allocating the quantity of the product included in each lot according to the allocation order to the required number of warehouses on each date, and determining the priority in the manufacturing operation of the lot based on the allocated date When,
A priority lot display step for displaying the determined priority order;
A process progress management method characterized by comprising:   4. The process progress management method according to claim 3, wherein the priority is determined by a predetermined calculation from the assigned date as the date to which the assigned date is assigned.

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