JPS6339746A - Parts production indicating device - Google Patents

Abstract

PURPOSE:To simplify the production command process greatly by sensing any parts whose storage in a parts storing part has decreased to a specific point for placing a further order, and giving production command for applicable parts to the lot process. CONSTITUTION:Minimum storage of each item of parts to be accommodated in a parts storing part 110 is entered from a data input part 10. The entered point-of-order information for each item of parts is accommodated in a point-of- order memory 18 classified by items. A storage sensor 22 includes parts information read devices installed at the incoming and outgoing ports to/from said parts storing part 110, to read off the items of parts carried in or out to/from the parts storing part 110, and the read information is fed to a parts-to-order calculating circuit 14. Production commands for respective items are automatically given to a lot process 120 to provide optimum storage for each item stored in the parts storing part 110 by the use of parts storage data sensed by said storage sensor 22.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a production instruction device, and particularly to a production instruction device for parts supplied to a production line.

[Prior Art] As shown in FIG. 5, various production lines, for example, an automobile production line 100, have a parts storage section 11 as needed.
0 is provided, and various parts are supplied to the production line 100 as needed.

In such a device, the amount of inventory of various parts kept in the parts storage section 110 is constantly monitored, and the amount of inventory is adjusted for each component so that there is no shortage of parts requested from the production line 100 side. I need to do it.

Conventionally, such inventory amount adjustment has generally been carried out using the ordering method, for example, when the parts storage department 11
When the inventory amount of a certain part in 0 decreases to the order point, the controller instructs the lot process 120 to produce the part in a predetermined lot size.

Then, in the lot process 120, parts are produced according to the instructions, the produced parts are stored in the parts storage section 110, and the inventory amount of the parts is adjusted to a predetermined amount.

Conventionally, as a production instruction device for such parts, a signboard system that uses a signal signboard that describes the lot size, type of storage pallet, number of pieces accommodated, etc. for each part is well known, and the information written on the signboard is Based on the above, he gave instructions for parts production.

That is, each part is stored in the parts storage section 110 using a pallet, and the signal signboard is attached to the pallet corresponding to the order point position.

Then, when the pallet on which this signal signboard is attached is delivered from the parts storage section 110 to the production line 110, the signal signboard is removed from the pallet 1 and sent to the lot process 120 indicated by the pallet. , was instructing the production of the parts concerned.

Then, lot process 12, where such a signboard is sent.
0, the corresponding parts were produced only based on the information written on the signal signboard and supplied to the parts storage section 110.

[Problems to be Solved by the Invention] However, the parts production instruction device using such a signal signboard has the following problems, and effective countermeasures have been desired.

(B) First, assuming that many types of parts are processed and used on the same production line 100, the signal signboards are sent intensively to the lot process in a short period of time, and information on production instructions for various parts is sent. There may be long queues.

However, each part included in such a queue often has a different production urgency, that is, a different priority. For example, if we do not prioritize production of parts with short delivery intervals, there is a risk of shortages of such parts.

Despite this, conventional production instruction devices concentrate on the lot process in a short period of time, and when signal signs are sent, they simply produce various parts in the order in which they are sent. For this reason, the amount of inventory in the parts storage unit 110 for some parts that have a short delivery interval rapidly decreases, and in the worst case, a shortage occurs, interrupting production on the production line 100 and causing a decrease in production efficiency. I had a problem with it happening.

In particular, in such equipment, when a stockout occurs, even if the lot process is producing other parts, it is necessary to interrupt the production of that part and produce the missing part. There was also a problem in that waste occurred and production efficiency decreased in this respect as well.

(b) In addition, in this conventional device, as a result of taking care to prevent the occurrence of stockouts, there was a problem in that various parts in the parts storage section 110 were often overstocked.

(c) In addition, with this conventional device, each time a pallet on which a signal signboard is hung is taken out from the parts storage section 110, a worker must carry the signal signboard to the lot process 120 each time. Each signal signboard transported to the lot process must then be sorted and collected.

For this reason, there were problems in that it took time to instruct the production of each part, and that the extremely complicated work of transporting the signal signboard was required.

[Object of the Invention] The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to prevent various parts from being out of stock during the lot process in order to prevent the parts stored in the parts storage section from being out of stock. To provide a parts production instruction device that can easily and automatically issue production instructions.

[Means for Solving the Problems] In order to achieve the above object, the device of the present invention includes a parts storage unit that stores parts produced in the lot process and ships them to the production line as needed, and a parts storage unit An inventory sensor that detects the amount of inventory in the department for each part, an order point memory that stores the order point for each part, a parts information memory that stores production part information for each part, and an inventory sensor that stores the information on each part. an ordered parts calculation circuit that reads out information about the part from the parts information memory and calculates production instruction information and priority for the part when the inventory amount of the part decreases to the order point stored in the order point memory; an instruction information memory that stores production instruction information for each part that has been ordered, and each time the ordered parts calculation circuit calculates production instruction information for a new part, it It is characterized in that the production instruction information for each part is rearranged according to the priority order, and the production instruction for each part is given to the lot process according to the rearranged priority order.

Therefore, according to the present invention, even when the production instruction information of multiple parts is calculated, the lot process starts with the parts with the highest order priority, so there will be no shortage of parts in the parts storage department, and the relevant parts will not be out of stock. It becomes possible to stably operate a production line that performs various productions using parts supplied from the parts storage section.

In particular, according to the present invention, it is possible to effectively prevent stockouts in the parts storage department, thereby preventing the occurrence of excess inventory in the parts storage department and making it possible to use the parts storage department effectively. .

[Example] Next, preferred embodiments of the present invention will be described based on the drawings.

FIG. 1 shows a preferred example of the parts production instruction device according to the present invention, and FIG. 2 shows a flowchart showing its operation.

As is well known, parts produced in the lot process 120 are stored in the parts storage section 110 one by one, and each part stored here is delivered part by part according to requests from the production line 100. It turns out.

In this embodiment, a data input section 10 and a display section 12 are connected to each other on the lot process 120 side.

Then, from the data input unit 10, production part information of each part reproduced in the lot process 120, such as production plan, processing conditions, etc., is input to the ordered parts calculation circuit 14,
The ordered parts calculation circuit 14 stores the input production parts information into the parts information memory 16 for each part.

Further, from the data input unit 10, a parts storage unit 110
Input the minimum stock amount of each part stored in the system, that is, the order point. The input order point information for each part is stored in the order point memory 18 for each part.

Furthermore, the apparatus of the embodiment includes an inventory amount sensor 22 that detects the amount of inventory stored in the parts storage section 110 for each component. In this embodiment, the inventory amount sensor 22 is formed using an incoming parts quantity information reading device 22a and an outgoing parts information reading device 22b provided at the inlet and outlet of the parts storage section 1100, as shown in FIG. It is configured to read the type and number of parts being stocked into the parts storage section 110 and the type and number of parts taken out from the parts storage section 110, and to input this read information to the ordered parts calculation circuit 14. There is.

The first characteristic feature of the present invention is that the inventory amount of each component stored in the parts storage section 110 is calculated using the component inventory amount data detected using the inventory amount sensor 22 in this manner. The aim of the lot process 120 is to automatically issue production instructions for each part so as to achieve an optimal stock amount.

For this reason, the ordered parts calculation circuit 14 receives parts into the parts storage section 110 as shown in the flow (a) of FIG. When a part is delivered from the unit 110, this is automatically detected using the inventory sensor 22, and the inventory amount of each part is calculated.

Then, it is determined whether the inventory amount of each part has decreased to the order point registered in the memory 18.

If there is a reduced number of parts, as shown in flow (c), the production part information of the part is read out from the parts information memory 16 to create production instruction information, and this is stored in the lot process 120. displayed on the display section 12.

Such production instruction information is comprised of various information necessary for production, such as the type of parts, production quantity, storage box type, and storage quantity.

By the way, as mentioned above, assuming that many types of parts are being processed on the same production line 100, the inventory amount of each part in the parts storage section 100 will be concentrated in a short period of time and the order point will be reduced. A situation may occur in which the amount decreases to

The second feature of the present invention is that when a plurality of parts decreases to the order point in a short period of time, parts are produced by automatically distinguishing between high-priority products and low-priority products.

By doing this, even if the inventory amount of multiple parts is concentrated in a short period of time and reduced to the order point, the stock amount can be maintained at an appropriate amount without causing a shortage in the parts storage section 110. becomes possible.

For this reason, the apparatus of this embodiment is provided with a production instruction information memory 20 into which a plurality of pieces of production instruction information can be written, and a time measurement section 24 used to determine priorities.

When creating production instruction information for each part, the ordered parts calculation circuit 14 simultaneously calculates the priority of the part, and stores the production instruction information of the part in the production instruction information memory 20 according to the priority. Write and store.

Therefore, if production instruction information for another part has already been written in the production instruction information memory 20, the priority order of that part is compared with the priority order of the newly written part,
The production instruction information for each part is sorted according to its priority and written into the memory 20.

As a result, it is understood that the production instruction information is written in the parts instruction information memory 20 in a sorted state between the parts whose production is prioritized.

Then, the ordered parts calculation circuit 14 reads out the production instruction information written in the memory 20 in order of the parts having the highest priority and displays it on the display unit 12.

Therefore, in the loft process 120, it is possible to produce parts among parts with a high priority and supply the parts.

In particular, according to the present invention, since parts can be produced in the order of priority, the parts storage section 1
Since it is possible to effectively suppress the occurrence of stockouts in the parts storage section 110, and there is no need to carry out make-to-stock production due to fear of stockouts, it is possible to prevent excess inventory in the parts storage section 110.

Then, when the production of the part concerned is finished, the memory 20
The production instruction information of the part concerned is calculated from 1, and the production instruction information of the part with the next highest priority is displayed on the display 12.

Note that it is also possible to store production instruction information for each part whose production has been completed in another memory as recorded data for parts produced by LOTTE & 120.

Next, the basic concept of the priority order determination principle of this embodiment will be explained.

FIG. 3 shows the relationship between the inventory amounts of parts A and B and time.

In the figure, it is assumed that the order point for part A is nl, and the inventory amount has decreased to order point n1 at time t1.

Further, it is assumed that the inventory i of component B decreases to the order point N1 later than that of component A at time -1.

In the apparatus of this embodiment, when the part A reaches the order point n1, the production part information of the part is read out from the part information memory 16, and production instruction information and its priority order are created.

At this time, if the average post-process usage amount of part A near unit time is n2, then the expected time t2 at which the inventory of part A becomes O can be determined by the following equation.

t2 = t1 + □ (1) Also, assuming that the average usage of part B in the subsequent process near unit time is IN2, the expected time T2 at which the inventory of part B becomes O can be expressed by the following equation.

T2 = T1 + □ ... (2) Therefore, when comparing the expected times when the inventory amount of parts A and B becomes O, it is found that T2 < t2, so part B has a higher priority. is understood.

Therefore, the ordered parts calculation circuit 14 of this embodiment uses the time inputted from the time measuring section 24 and the information of each part read out from the parts information memory 6 to calculate the first equation and the second equation. Based on the time t when the inventory amount of each part A and B becomes O
2 and T2 are calculated, and this predicted time is used as the priority order.

Therefore, it is understood that the production instruction information is written and stored in the production information memory 20 of this embodiment, assuming that the shorter the predicted out-of-stock time when the inventory amount becomes O, the higher the priority j item. Ru.

Incidentally, in this embodiment, as described above, the case where the priority order of each part is determined based on the predicted out-of-stock time of each part has been explained as an example, but the present invention is not limited to this, and can be applied to other methods as well. The priority order can be determined based on the factors, and for example, it is also possible to give a priority order to each component in advance.

FIG. 4 shows an example of a specific production instruction device formed using the device of the present invention.
A warehouse is used as the parts storage section 110.

The stock amount of various parts stored in this warehouse is automatically detected, and production instructions for various parts are given to the lot process 120 using a computer.

That is, the apparatus of this embodiment includes a display unit 3Q for inputting and displaying data, a production instruction computer 32, a disk device 34, and reading devices 22A and 2.
It is composed of 2B.

The display unit 30 is provided on the lot process side and functions as the data input section 10 and the display section 12.

Further, the production instruction computer 32 is configured to function as the ordered parts calculation circuit 14 and the time measurement section 24, and the disk device 34 is configured to function as the ordered parts calculation circuit 14 and the time measurement section 24.
6.18 and 20.

The in-stock parts reading device 22A inputs the type and number of parts that are automatically stocked into the warehouse 110 into the reading computer 32, and the out-of-stock parts information reading device 22
B similarly reads the types and numbers of parts delivered from the warehouse 110 and inputs them into the computer 32.

Then, the computer 32 calculates the inventory amount in the warehouse 110 for each part in the same manner as in the above embodiment, and displays the production instruction information of the parts that have reached the order point on the display unit 30.
It is designed to be displayed.

[Effects of the Invention] As explained above, according to the present invention, parts whose inventory amount in the parts storage unit has decreased to the order point are automatically detected, and production instructions for the parts are automatically sent to the loft process. This eliminates the need for workers to carry, organize, and collect signal signs and slips as production instruction information, which is required in the past, making it possible to greatly simplify the production instruction process. .

In general, according to the present invention, even if the inventory of multiple parts decreases to the order point in a short period of time, the priority of each part is automatically determined and the parts are produced according to the priority. Since instructions are given, there will be no shortage of parts in the parts storage department, and production in subsequent processes can be carried out stably.
Moreover, since the occurrence of stockouts in the parts storage section can be effectively suppressed in this way, it is possible to effectively prevent excess inventory in the parts storage section.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a preferred example of a parts production instruction device according to the present invention, FIG. 2 is a flowchart showing the operation of the device shown in FIG. 1, and FIG. 3 is a determination of the priority order of each part. FIG. 4 is a block diagram showing a specific embodiment of the present invention, and FIG. 5 is an explanatory diagram showing the relationship between a production line and a parts supply line. 10... Data input section 12... Display section 14... Order parts calculation circuit 16... Parts information memory 18... Order point memory 20... Production instruction information memory 22... Inventory amount sensor 24... Time measurement section 100... Parts storage section 110... Production line 120... Lot process

Claims (3)

[Claims] (1) A parts storage section that stores parts produced in the lot process and dispatches them to the production line as needed, an inventory amount sensor that detects the amount of inventory in the parts storage section for each part, and an order point for each part. and a parts information memory that stores production part information for each part.When the inventory amount of the parts detected by the inventory sensor decreases to the order point stored in the order point memory, an ordered parts calculation circuit that reads information on the part from the parts information memory and calculates production instruction information and priority of the part; and an instruction information memory that stores the calculated production instruction information of each part; Every time the ordered parts calculation circuit calculates production instruction information for a new part, it rearranges the production instruction information for each part that has already been written in the production instruction information memory according to the priority order, and processes the production instruction information according to the rearranged priority order. A parts production instruction device characterized by giving production instructions for each part to a lot process. (2) In the device according to claim (1), the production parts information input from the data input section is written and stored for each part in the parts information memory, and the order point memory stores:
A parts production instruction device characterized in that an order point input from a data input section is written and stored for each part, and production part information and order point information are preset in each memory. (3) In the apparatus according to either claim (1) or (2), the production instruction information for each part output from the ordered parts calculation circuit is displayed on a display section provided in the lot process. A parts production instruction device characterized by: