JP2541192B2 - Parts production instruction device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a production instruction device, and more particularly to an improvement of a production instruction device for parts supplied to a production line.

[Prior Art] As shown in FIG. 5, various production lines, for example, a production line 100 for automobiles, are provided with a storage section 110 for components as necessary, and various components are produced as needed. line
Supplied for 100.

In such a device, the inventory amount of various components in the component storage unit 110 is constantly monitored, and the inventory amount is adjusted for each component so that the component requested from the production line 100 will not be out of stock. There is a need.

Conventionally, such adjustment of the inventory amount is often performed by using an ordering point system, and for example, the parts storage unit 11
When the stock quantity of a part within 0 decreases to the ordering point, a lot process (parts manufacturing process) is performed with a predetermined lot size.
Directs production of the relevant parts to 120.

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

Conventionally, as a production instruction device for such a component, a signboard type using a signal signboard that describes the lot size, the type of the accommodation pallet, the number of accommodated parts, etc. for each component is well known, and the information described on the signboard The production instruction of the parts was done based on the.

That is, each component is stored in the component storage unit 110 using a pallet, and the signal signboard is mounted on the pallet corresponding to the ordering point position.

Then, when the pallet on which the signal signboard is mounted is unloaded from the parts storage unit 110 toward the production line 110, the signal signboard is removed from the pallet and sent to the lot process 120 for instructing the pallet, Was instructing production.

And lot process 12 that such a sign is sent
In 0, the corresponding parts were produced based on only the information described on the signal signboard and supplied to the parts storage unit 110.

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

(A) First, assuming the case of processing and using various kinds of parts on the same production line 100, the signal signboard is intensively sent to the lot process in a short period of time, and production instruction information of various parts is sent. There may be a queue.

However, the parts included in such a queue often have different urgency of production, that is, different priorities. For example, it is possible to simply compare a part with a short interval and a part with a long interval to be delivered from the parts storage unit 110. For example, if the parts with short delivery intervals are not prioritized for production, the parts may be out of stock.

In spite of this, the conventional production instruction apparatus simply produces various parts in the order in which the signal signs are sent when the signal signs are sent to the lot process in a short period of time. For this reason, the stock quantity in the parts storage unit 110 decreases sharply among the parts with a short delivery interval, and in the worst case, it is out of stock and the production on the production line 100 is interrupted and the production efficiency is reduced. There was a problem of causing it.

In particular, in such an apparatus, if a stockout occurs, it is necessary to interrupt the production of the part to produce the stockout part even if the lot process is producing other parts. In this case, there is a problem that waste occurs and the production efficiency is reduced in this respect as well.

(B) Further, in this conventional device, there is a problem that various components in the component storage unit 110 are often overstocked as a result of taking care not to cause the shortage.

(C) Further, in this conventional device, every time the pallet on which the signal signboard is hung is unloaded from the parts storage unit 110,
The operator needs to carry the signal signboard to the lot process 120 each time, and each signal signboard carried to the lot process must be sorted and collected thereafter.

For this reason, it takes time to instruct production of each part, and
There was a problem that extremely complicated work of transporting the signal signboard was required.

[Object of the Invention] The present invention has been made in view of such a conventional problem, and an object of the present invention is to provide various parts for a parts manufacturing process so that parts stored in a parts storage unit are not out of stock. The object of the present invention is to provide a parts production instruction device capable of easily and automatically issuing the production instruction of.

[Means for Solving Problems] In order to achieve the above object, the device of the present invention stores a component produced in a component manufacturing process, and stores the component in a production line when necessary, Inventory quantity sensor that detects the inventory quantity in the storage section for each part, order point memory that stores the order point for each part, part information memory that stores the production part information for each part, and inventory quantity sensor detection When the stock quantity of the parts to be stored decreases to the ordering point stored in the ordering point memory, the information of the parts is read from the part information memory, and the production instruction information based on the ordering priority order corresponding to the consumption speed of the parts is read. An ordering part arithmetic circuit for performing an operation and an instruction information memory for storing the production instruction information for each operated part are included. It is characterized in that the production instruction information of each component already written in the production instruction information memory is rearranged according to the priority order, and the production instruction of each component is given to the component manufacturing process according to the rearranged priority order.

Therefore, according to the present invention, even when the production instruction information of a plurality of parts is calculated, in the parts manufacturing process, since the parts having the highest order of priority are manufactured, parts are not out of stock in the parts storage unit. It is possible to stably operate a production line that performs various types of production using the components supplied from the component storage unit.

In particular, according to the present invention, it is possible to effectively prevent shortages in the component storage unit, so that it is possible to prevent excessive inventory in the component storage unit and effectively use the component storage unit. .

[Embodiment] Next, a preferred embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a preferred example of a parts production instruction apparatus according to the present invention, and FIG. 2 shows a flow chart showing the operation thereof.

As is well known, the parts produced in the lot process (parts manufacturing process) 120 are stored in the parts storage unit 110 for each part, and each part stored here is a part that is requested by the production line 100 side. It will be issued every time.

In this embodiment, a data input unit 10 and a display unit 12 are provided 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, for example, a production plan, processing conditions, etc., is inputted to the ordering part arithmetic circuit 14, and this ordering part arithmetic circuit 14 is inputted. The production part information is stored in the part information memory 16 for each part.

Further, from the data input unit 10, the minimum stock amount of each component stored in the component storage unit 110, that is, the order point is input. Then, the input order point information of each part is stored in the order point memory 18 for each part.

In addition, the apparatus of the embodiment has the inventory amount sensor 22 that detects the inventory amount stored in the component storage unit 110 for each component. In the embodiment, the inventory quantity sensor 22 is formed by using the incoming parts information reading device 22a and the outgoing parts information reading device 22b provided at the entrance and exit of the parts storage unit 110, as shown in FIG. It is configured to read the type and number of parts stored in the parts storage unit 110 and the type and number of parts stored in the parts storage unit 110, and to input this read information to the ordered parts arithmetic circuit 14. There is.

The first characteristic feature of the present invention is that the inventory amount of each component stored in the component storage unit 110 is calculated by using the inventory amount data of the components thus detected by the inventory amount sensor 22. This is to automatically instruct the production of each part toward the lot process 120 so that the optimum inventory amount is obtained.

Therefore, the ordered parts arithmetic circuit 14 stores the parts in the parts storage unit 110 as shown in the flow (a) of FIG. 2 or stores the parts as shown in the flow (b). When a part is delivered from the unit 110, the inventory amount sensor 22 is used to automatically detect this, and the inventory amount of each component is calculated.

Then, it is determined whether or not the stock quantity of each component has decreased to the ordering point registered in the memory 18.

If there are parts that have decreased, flow (c)
As shown in, the production part information of the part is read from the part information memory 16 to create production instruction information, which is displayed on the display unit 12 provided in the lot process 120.

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

By the way, assuming a case where many kinds of parts are processed on the same production line 100 as described above, the inventory quantity of each part in the parts storage unit 100 is concentrated in a short period of time and the ordering point is There may be a situation in which

A second characteristic feature of the present invention is that when a plurality of parts are reduced to the ordering point in a short period of time, the parts are automatically produced by distinguishing between the high priority products and the low priority products.

By doing this, even if the inventory quantity of multiple parts is concentrated in a short period of time and decreases to the ordering point, it is possible to maintain the appropriate inventory quantity without causing any shortage in the parts storage unit 110. Is possible.

For this reason, the apparatus of the present embodiment is provided with a production instruction information memory 20 in which a plurality of production instruction information can be written, and a time measuring unit 24 used for determining the priority order.

Then, when the production instruction information of each component is created, the ordering component arithmetic circuit 14 simultaneously calculates the priority of the component, and the production instruction information of the relevant component is stored in the production instruction information memory 20 in accordance with the priority. Write and store.

Therefore, when the production instruction information of another component is already written in the production instruction information memory 20, the priority of the relevant component is compared with the priority of the newly written component,
The production instruction information of each part is sorted according to the priority order and written in the memory 20.

As a result, it is understood that the production instruction information is written in the component instruction information memory 20 in a sorted state in the order of the production priorities.

Then, the ordering point part arithmetic circuit 14 reads the production instruction information in order from the part with the highest priority written in the memory 20 and displays it on the display unit 12.

Therefore, in the lot process 120, it is possible to produce the parts in descending order of priority and supply the parts.

In particular, according to the present invention, since it is possible to produce parts in the order of high priority, the parts storage unit
It is possible to effectively suppress the occurrence of out-of-stock items in 110, and since it is not necessary to make a prospective production due to fear of out-of-stock items, it is possible to prevent excess inventory in the parts storage unit 110.

Then, when the production of the relevant part is finished, the memory 20
Then, the production instruction information of the relevant part is cleared, and the production instruction information of the next highest priority component is displayed on the display unit 12.

Incidentally, as the record data of the parts produced in the lot process 120, it is possible to store the production instruction information of each finished part in another memory.

Next, the basic idea of the priority order determination principle of this embodiment will be described.

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

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

Further, it is assumed that the inventory quantity of the part B has decreased to the ordering point N1 at time T1 later than the part A.

In the apparatus of this embodiment, at the same time that the part A reaches the ordering point n1, the production part information of the part is read from the part information memory 16 and the production instruction information and its priority order are created.

At this time, assuming that the average post-process usage of the part A per unit time is n2, the estimated time t2 when the stock of the part A becomes 0 can be calculated by the following equation.

Further, assuming that the post-process average usage amount N2 of the component B per unit time is, the estimated time T2 when the inventory of the component B becomes 0 can be expressed by the following equation.

Therefore, when comparing the estimated times when the stock amounts of the parts A and B are 0, respectively, it is understood that T2 <t2, so that the priority order of the parts B is higher.

Therefore, the ordering component arithmetic circuit 14 of the present embodiment uses the time input from the time measuring unit 24 and the information of each component read from the component information memory 16 based on the first and second equations. Time t2 when the stock quantity of each part A and B becomes 0 and
T2 is calculated and this predicted time is used as the priority.

Therefore, it is understood that in the production information memory 20 of the present embodiment, the production instruction information is written and stored as a component having a short stock forecast amount of 0 and a short out-of-stock forecast time having a higher priority.

It should be noted that, in the present embodiment, as described above, the case where the priority order of each component is determined based on the out-of-stock estimated time of each component has been described as an example, but the present invention is not limited to this, and other than this. It is possible to determine the priority order based on the above element, and for example, it is possible to give the priority order to each part in advance.

FIG. 4 shows an example of a specific production instruction device formed by using the device of the present invention. In the device of the embodiment, a warehouse is used as the parts storage unit 110.

Then, the inventory amount of various parts stored in the warehouse is automatically detected, and a production instruction of various parts is directed to the lot process 120 using a computer.

That is, the apparatus of this embodiment includes a display unit 30 for inputting and displaying data, and a production instruction computer.
32, a disk device 34, and reading devices 22a and 22b.

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

Further, the production instruction computer 32 is formed so as to function as the ordered part arithmetic circuit 14 and the time measuring unit 24, and the disk device 34 is formed so as to function as each of the memories 16, 18 and 20. There is.

Then, the incoming parts reading device 22a inputs the type and the number of the parts automatically loaded into the warehouse 110 into the computer 32, and the outgoing parts information reading device 22b reads the warehouse 110.
Similarly, read the type and number of parts delivered from
Inputting to computer 32.

Then, the computer 32 is configured to calculate the stock quantity in the warehouse 110 for each part and display the production instruction information of the part which has reached the order point on the display unit 30 in the same manner as the above-mentioned embodiment.

[Effects of the Invention] As described above, according to the present invention, a component whose inventory amount in the component storage unit has decreased to the order point is automatically detected,
Since it is possible to automatically instruct the production of the relevant part toward the part manufacturing process and it is not necessary for the worker to carry and organize and collect signal signs and slips as the production instruction information as in the conventional case, It is possible to greatly simplify the instruction process.

Further, according to the present invention, even when the stock quantity of a plurality of parts is reduced to the ordering point in a short time, the priority order of each part is automatically determined and the production instruction of the parts is instructed according to the priority order. Therefore, it is possible to stably carry out production in the subsequent process without causing a stockout in the component storage unit, and it is possible to effectively suppress the stockout in the component storage unit in this manner. Therefore, it is possible to effectively prevent excess inventory in the component storage unit.

[Brief description of drawings]

FIG. 1 is a block diagram showing a preferred example of a component production instruction device according to the present invention, FIG. 2 is a flow chart diagram showing the operation of the device shown in FIG. 1, and FIG. 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 …… Ordered parts arithmetic circuit 16 …… Parts information memory 18 …… Order point memory 20 …… Production instruction information memory 22 …… Inventory quantity sensor 24 …… Time measurement section 100 …… Parts storage unit 110 …… Production line 120 …… Lot process

Claims (3)

(57) [Claims] 1. A part that is produced in a part manufacturing process is stored,
A parts storage unit that outputs to the production line as required, an inventory amount sensor that detects the inventory amount in the parts storage unit for each part, an order point memory that stores the order point for each part, and a production for each part When the part information memory that stores part information and the inventory quantity of the parts detected by the inventory sensor decrease to the order point stored in the order point memory, the information of the part is read from the part information memory and the The ordering part arithmetic circuit including: an ordering part arithmetic circuit for calculating production instruction information based on ordering priority according to the consumption speed; and a production instruction information memory for storing the calculated production instruction information of each part. Each time the production instruction information of a new component is calculated, the production instruction information of each component already written in the production instruction information memory is rearranged according to the priority order, and the rearranged priority order is calculated. Parts of production instruction device and performing production instructions for each component to the component manufacturing process according to. 2. The device according to claim 1, wherein production part information input from a data input section is written and stored in the part information memory for each part, and data is input in the order point memory. A parts production instruction device characterized in that ordering points input from a department are written and stored for each part, and production part information and ordering point information are preset in each memory. 3. The apparatus according to any one of claims (1) and (2), wherein the production instruction information of each component output from the ordered component arithmetic circuit is displayed on a display unit provided in the component manufacturing process. A production instruction device for parts, which is characterized by being displayed.