JPH01188256A - Part production instructing device - Google Patents

Abstract

PURPOSE:To reduce the number of defect parts in the succeeding process and reduce waiting time by installing a means which preferentially instructs the production for the foreprocess when the actual stock quantity is less than the demanded stock quantity for the succeeding process on the basis of the information supplied from a stock quantity grasping means and instructs the transport of parts. CONSTITUTION:A stock quantity grasping means 16 reads the volume of inventories in each kind of parts in each delivery of the part in a part storing means 14. In a production instructing means 26, the actual stock quantity and an ordered point are compared on the basis of the information supplied from the stock quantity grasping means 16, and when the stock quantity reaches the ordered point, the production condition data is edited, and the kind of part to be produced and lot size are instructed for a lot process 10. Though, in the lot process 10, working is carried out according to the production instruction, the production instruction for the part whose stock quantity is zero is performed in preference by a preferential part instructing means 28. If a delivery reservation for the succeeding processes is received at this time, the produced parts are sent to the succeeding processes by a part transport instructing means 30.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a parts production instructing device, and particularly to a parts production instructing device that instructs a previous process to produce parts according to the amount of inventory in a parts storage warehouse.

(Related technology) As a technology related to the present invention, the "inventory management device" described in Japanese Patent Application Laid-Open No. 48-67960 is well known.

[Conventional technology] When operating with an order point method in which orders are placed for each predetermined lot size when inventory is consumed and a certain order point is reached as a means of giving production instructions to the previous process (loft process), conventionally, A signal signboard with production conditions written on it is attached to the position of the order point based on the monthly production plan, and when the pallet with the signal signboard is shipped to the subsequent process, the signal signboard is removed from the pallet and the corresponding The lot process was sent to the loft process, and production instructions were given for that lot process.

Conventionally, the only production instruction information for the loft process was this signal signboard, and the lot process did not know the inventory amount in real time and the shipping request information for the subsequent process.

[Problems to be Solved by the Invention] Conventional Problems By the way, when many types of parts are produced in one lot process, the signal sign arrives at the lot process and even if it is 4, there is a signal sign on a first come first served basis. In many cases, production cannot begin immediately and the product is in a waiting state. In the queue for this signal sign,
With the passage of time, the amount of inventory for some parts decreases and the inventory level reaches zero, but with the conventional technology mentioned above, it is not possible to grasp this during the lot process, which eventually leads to shortages on the production line. There was a problem with this.

In addition, after a missing part is produced in the lot process, it is not possible in the loft process to know where it will be transported to the required post-process. There was a problem in that the wasteful work of shipping the goods to the subsequent process was performed again.

OBJECTS OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and an object thereof is to provide a parts production instruction device that can reduce the number of out-of-stock items in subsequent processes and reduce the waiting time when out-of-stock items occur.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a parts storage means provided between production processes including a pre-process and a post-process, and an inventory amount in the parts storage means based on the type of parts. A means for separately grasping inventory quantity and a means for comparing the actual inventory quantity and the order point based on the information from the inventory quantity grasping means and instructing the previous process to produce when the current inventory quantity reaches the order point. The present invention is characterized by comprising means for instructing the preceding process to prioritize production and instructing parts transportation when the inventory amount is less than the number of requests for delivery from the subsequent process.

[Function] With the above configuration of the present invention, the inventory amount grasping means reads the parts in the parts storage means by part type each time they are shipped, and the means for issuing production instructions reads the parts based on the information from the inventory amount grasping means. The actual inventory amount is compared with the order point, and when the inventory amount reaches the order point, the production condition data is edited and instructions are given to the lot process, such as the type of parts to be produced and the lot size.

In the lot process, processing is normally carried out according to the production instructions specified above, but for parts whose inventory amount has reached zero, parts are produced preferentially by means of giving priority instructions. Instructions are given, and in this case, production is performed according to the priority instructions. At this time, if there is a reservation for shipping for the subsequent process, the means for instructing parts transportation outputs transportation instruction information for the production parts to the subsequent process (production line) for the lot process, and as a result, the production parts are transferred to the parts storage means. The products are transported directly to the production line without being warehoused.

As a result of the above, it is possible to reduce the number of out-of-stock items and the waiting time in subsequent processes.

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

FIG. 1 shows a block diagram of a schematic configuration of a parts production instruction device according to the present invention.

A characteristic feature of the present invention is that it includes a parts storage means provided between production processes including a pre-process and a post-process, and an inventory quantity grasping means for grasping the quantity of stock in the parts storage means by part type. That's true.

In the figure, a parts storage means 14 is arranged between a loft process 10 which is a front process and a production line 12 which is a back process. This parts storage means 14 is used for lot process 1.
It has a buffer-like function to temporarily store the number of different types of parts produced at 0, and the inventory amount of the parts stored here can be detected by inventory amount grasping means 16 for each type of component. This stock amount grasping means 16 is connected to an order calculation means 18, which will be described later, and is capable of transmitting an increase or decrease in the stock amount in the parts storage means 14 to the order calculation means 18 each time.

That is, the present invention includes means for comparing the actual inventory amount and the order point based on information from the inventory amount grasping means and instructing the previous process to produce when the current inventory amount reaches the order point. The present invention is characterized in that it includes means for instructing the preceding process to prioritize production and instructing parts transportation when the inventory is smaller than the number of delivery requests of the subsequent process.

As a means for giving production instructions to the previous process, it is connected to an order calculation means 18 that determines order points and out-of-stock items according to the inventory amount, and creates production instruction information and parts transportation instruction information. production data input means 20 for inputting production conditions such as lot size, capacity, and other order points, and production data storage means 2 for storing input production conditions.
Contains 2. And the production data input means 20
New information can be entered or changed using the , and these production condition data are stored in the production data storage means 22 and can be updated to the order calculation means 1 when necessary.
8 can be read out.

In addition, the order calculating means 18 includes an outgoing reservation means 24 for making an outgoing reservation for the shortage when the parts inventory in the parts storage means 14 is less than the outgoing request number of the post-process 12, and an outgoing reservation unit 24 for making an outgoing reservation for the shortage, and A production instruction output means 26 for transmitting instruction information is connected.

As a means for giving priority production instructions and parts transportation instructions to the previous process, a priority parts instruction means for giving production instructions to the lot process 10 preferentially for parts whose inventory in the parts storage means 14 has become zero. 28, when the inventory amount in the parts storage means 14 is zero and there is a delivery reservation, the lot process 10
A transport instruction output means 30 is provided for instructing the parts to be transported to the subsequent process 12.

The operation of this embodiment with the above configuration will be explained.

FIG. 2 shows a control flowchart based on this embodiment, and in step 100 in the same figure, the order calculation means 18 determines whether or not there is a stock out via the inventory amount grasping means 16, and if there is a stock out, Inventory quantity data is read from the quantity grasping means 16 (step 110), production condition data for the part is read out (step 120), and in step 130 it is determined whether the inventory quantity has reached the order point. Then, if the inventory amount reaches the order point, step 1
The production condition data is edited in step 40, and the process proceeds to step 150, where production instruction information is transmitted to the production instruction output means 26. The content outputted to the production instruction output means 26 includes various information necessary for the loft process 10 to produce, such as product type, lot size, number of accommodated items, Japanese varieties accommodated, and production instruction time.

In the normal lot process 10, the production instruction output means 2
Processing is performed in accordance with the production instructions outputted from 6, but if the priority parts instruction means 28 indicates which parts should be produced with priority, the parts will be produced in accordance with this priority instruction.

In step 160, it is determined whether or not the inventory in the parts storage means 14 is zero. If there is a component whose inventory is zero, then in step 170, a production instruction is given preferentially to that component. Further, in step 180, it is determined whether or not there is a reservation for leaving the warehouse, and if there is a reservation for leaving the warehouse, step 190 is performed.
At this time, the transport instruction output means 30 outputs an instruction to the lot process 10 to directly transport the production parts to the production line 12. When transport instruction information (product type, quantity, transport destination, etc.) for production parts is output to the lot process 10 to be sent to the transport instruction output means 30, the production parts are not stored in the parts storage means 14. , directly transported to the production line 12. In this way, when the parts reserved for delivery reach the production line 12, the delivery reservation is reset by the delivery reservation means 24.

FIG. 3 shows the change in inventory 1aH as time T passes.

That is, n at time t. The existing 6-mi warehouse becomes the order point nl at time t, and at this timing ■, a production instruction is given to the lot process 10. In this case, when there is a first-come, first-served production instruction in the lot process 10, the inventory continues to decrease as time passes and reaches zero at time t2. Then, the priority parts instruction is output at time t2.

According to this priority instruction, production is started with priority in the lot process 10, but if the production line 12 tries to issue another part at time t3 before the warehouse arrival time t4, the production line 12 will not be able to issue the part due to lack of inventory. You will have to pay for shipping. Therefore, at this time t3, the transportation instruction output means 30 outputs transportation instruction information to the lot process 10.

As explained above, according to the embodiment of the present invention, parts whose inventory amount in the parts storage means 14 has decreased to the order point are automatically detected, and production instructions for the parts are automatically sent to the lot process 10. This eliminates the need for transporting and sorting and collecting signal signs as production instruction information as in the past, simplifying the process and reducing man-hours.

Further, when the inventory amount in the parts storage means 14 becomes zero,
By outputting an instruction to the lot process 10 to prioritize the production of the part, it is possible to reduce the number of out-of-stock items on the production line 12.

Furthermore, by the delivery reservation means 24 and the transportation instruction means 30,
Items immediately needed by the production line 12 can be directly transported from the loft process 10 to the production line 12 without passing through the parts storage means 14, and the waiting time of the production line 12 can be reduced. This reduces the need for make-to-stock production due to fear of stockouts, and prevents excess inventory.

[Effects of the Invention] As explained above, the present invention includes a parts storage means provided between production processes, an inventory quantity grasping means for grasping the inventory quantity, and outputting production instruction information to the previous process in certain cases. By providing the order calculation means, it is possible to reduce out-of-stock items in subsequent processes and reduce waiting time.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a parts production instruction device according to the present invention, FIG. 2 is a diagram showing a control flowchart according to this embodiment, and FIG. 3 is a diagram showing changes in inventory amount over time. be. 10: Loft process (pre-process) 12: Production line (post-process) 14: Parts storage means 16: Inventory amount grasping means 1B: Order calculation means 26: Production instruction output means 28...Priority parts instruction means 30...Transportation instruction output means

Claims (1)

[Scope of Claims] A parts storage means provided between production processes including a pre-process and a post-process, an inventory amount grasping means for grasping the inventory amount in the parts storage means by part type, and information from the inventory quantity grasping means. It is equipped with a means to compare the actual inventory amount and the order point based on the order point and issue production instructions to the previous process when the current inventory amount reaches the order point, and the inventory amount is less than the number of items requested by the subsequent process. A parts production instruction device comprising: means for issuing production priority instruction information and parts transportation instructions to a preceding process;