JPS61232026A - Production system for pressed articles - Google Patents

Abstract

PURPOSE:To optimize inventory quantity and to stabilize quality by subjecting inventory management of stock and pressed articles, preparatory plan management of die setting, etc., system for setting pressing conditions, conveyance management and production instruction system to online centralized control. CONSTITUTION:The production instruction system 17 judges the working sequence of the pressed articles upon receipt of the signal from the production condition signal from a pressed article assembly line 5 and the signal from an inventory management system 13 and feeds a signal to the system 15 for setting the pressing conditions. On the other hand, said system emits commands to the conveyance management system 16 and the preparatory plan management system 14 respectively. The pressed articles in an automated warehouse 1 for the pressed articles are conveyed to an assembly line 5 and the pressed articles P of the press line are replenished to the warehouse 1. The system 14 and the system 16, etc. start operating and execute the pressing. Such system can deal flexibly with small and middle quantity production of multiple kinds and is therefore effective.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a table production system suitable for use in a press factory, particularly for high-mix, medium- to low-volume production.

(Conventional technology) Conventionally, in order to minimize the amount of pressed products in stock, automobile factories have adopted the so-called kanban system, a system that produces and manages the necessary pressed products in the required amount at the required time. . FIG. 2 shows the conventional kanban system, in which a worker presses a request button 32 when he or she wishes to replenish pressed products P on a body assembly line 31.
A press product request signal is sent to the destination indicating device 33. Then, the destination indicating device 33 uses the transportation instruction card 34 on which the product number, store address, body number, pressed product name, pallet address, and line address are written to direct the transportation lift '55 to the desired pressed product P in the stockyard 36. The press product P is then transported and supplied to the body assembly line 51 by the transport lift 35. At the same time, a triangular instruction card 38 on which the product number, loft size, standard number of parts, store address, and line address are written is hung on the store centralized kanban board 37.

Triangular instruction card 5B#: t hung on store central kanban hanging 37, press line end kanban hanging 4 by transport lift 39 for a predetermined period of time, for example, only once per hour
0, and production instructions for each required press product P are given.

In response to this production instruction, in the press line 41, an operator sets pressing conditions such as hydro blank holder air pressure and die height, and loft production of the pressed product P is carried out. When the loft production is completed, the produced press product P is transported to the stockyard 56 by the transport lift 42 and stored.

(Problems to be Solved by the Invention) However, there are the following problems in the flow of pressed products and information signals as described above.

In other words, it is difficult to immediately know the exact inventory amount of press products P in the stockyard 36, and even to do so requires a large amount of man-hours. If production management is performed only based on the above kanban information, the flow will be delayed by the production time of the pressed products P.Depending on the diversified production volume of the pressed products P, the body assembly line 3.
1 may be out of stock. Also, press line 4
Since the processing conditions in Step 1 are set by the operator each time, there is a high risk that quality will deteriorate due to setting errors, especially when the number of types of pressed products P increases.

The present invention was made in view of the problems of the prior art, and by controlling conveyance/setup management, production/inventory management, and processing condition settings in real time, it is possible to accurately manage inventory amounts and prevent stockouts. The aim is to provide a press product production system that achieves quality improvement without any problems.

(Means for Solving the Problems) The present invention is a technical means for achieving the above-mentioned objects, which is comprised of an inventory management system, a setup management system, a press processing condition setting system, a transportation management system, and a production instruction system. It is.

The inventory management system includes a means for checking the part number and quantity of stored items when the stored items are brought into an automatic warehouse for materials and an automatic warehouse for pressed products, a means for displaying and recording the inventory amount of stored items, and and means for outputting the inventory status of stored items in both automated warehouses.

The setup management system includes a storage instruction means for instructing to store the required number of materials in an automatic material warehouse, a material set instruction means for instructing to set the materials in the automatic warehouse in a press machine, and a desired press type. A mold setting instruction means for instructing the press machine to set the press machine, a means for outputting the completion of setup of the material and the mold, and an operation preparation instruction means for instructing the press machine to prepare for operation after the setup is completed. It is something.

The press processing condition setting system automatically determines whether the material and mold are as planned by comparing the material set completion signal and mold set completion signal from the setup management system with material specification information and mold specification information, respectively. and a means for automatically setting press working conditions such as hydro blank holder air pressure that determines the outer load via a current proportional control valve in which a current value for each type of pressed product is stored in advance. It is something.

The transport management system includes means for receiving a call signal from the press product assembly line and instructing the first unmanned cart to transport the press product from the automatic warehouse for press products to the press product assembly line, and a means for receiving a call signal from the press line. and means for receiving the signal and instructing the second unmanned cart to transport the pressed products from the press line to the automated warehouse for pressed products.

The production instruction system includes a means for determining the processing order of the press products by receiving production status signals from the press product assembly line and press product inventory status signals from the inventory management system, and a means for determining the processing order of the press products, and a means for determining the processing order of the press products by receiving the production status signal from the press product assembly line and the press product inventory status signal from the inventory management system, and a means for determining the processing order of the press products. The system is equipped with means for outputting, and means for sending transport commands and setup commands to the transport management system and the setup management system, respectively.

(Function) According to the above configuration, when the production instruction system determines the processing order of the press products in response to the production status signal from the press product assembly line and the press product inventory status signal from the inventory management system, this press product While the machining position is sent to the press working condition setting system, conveyance commands and setup commands with contents commensurate with the press working order are issued to the transport management system and the setup management system, respectively.

When the transport management system inputs a transport command, the pressed products in the automated warehouse for pressed products are transported to the pressed product assembly line by the first unmanned cart, and the pressed products on the press line are transferred to the automated press product assembly line by the second unmanned cart. Transported to warehouse.

Then, in the setup management system, an instruction is given to set the desired material stored in the automatic material warehouse into the press machine, and an instruction is given to set the desired mold into the press machine. Once the material and mold setup is complete, you will be instructed to prepare the press machine for operation.

When the material set completion signal and die set completion signal are sent from the setup management system to the press processing condition setting system,
The material set completion signal and the mold set completion signal are compared based on material specification information and mold specification information. As a result, when it is determined that the material and mold set in the press machine are the intended ones, a predetermined amount of current is supplied to the current proportional control valve, which determines the outer load of the hydro blank. Pressing conditions such as holder air pressure are automatically set, and press forming is performed.

The automatic material warehouse in which the material is in short supply is instructed by the setup management system to store new materials until the required number is reached. The product number and quantity of the stored items at the time of delivery to the automatic warehouse for materials are confirmed by the inventory management system, and the amount of the materials in stock is recorded. This also applies to pressed products stored in automated warehouses for pressed products.
The inventory status of stored items in both automated warehouses is constantly output.

In this way, the present invention automatically instructs and controls the press working conditions, the inventory status of materials and pressed products according to the production volume, and the operation timing of transportation and setup in a real-time manner. Automatic settings are achieved, and accurate transport/setup management, production/inventory management is established at all times.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

In Fig. 1, reference numeral 1 denotes an automated warehouse for press products that has storage locations numbered for each type of press product P, and unmanned carts transport the press products P from an intermediate warehouse 3 installed on the press line 2. 4, and unmanned carts 7 are used to transport the pressed products to a relay point 6 disposed on the body assembly line 5. The loading and unloading of pressed products P in the automated warehouse 1 is automatically carried out by a stacker crane.

Reference numeral 8 is an automatic material warehouse for storing the material W obtained by cutting the coil C into a predetermined size.It has a storage location numbered for each type of material W, and the loading and unloading of the material W is carried out by a stacker crane ( This is done automatically by flashing. This automatic warehouse for materials 8 and the automatic warehouse for pressed products IFi, the product numbers of the stored items W and P at the time of delivery,
A verification means to confirm the quantity, a means to display the quantity in stock,
It is equipped with means for recording the inventory amount and information transmission devices 9 and 10 for transmitting the information to the inventory management system 13.

11 is for man/machine/keyboards, displays, etc.
A centrally controlled comviator with an interface 12, an inventory management system 15 and a setup management system 14.
, a press processing condition setting system 15 , a transport management system 16 , and a production instruction system 17 .

The inventory management system 13 includes means for inputting information from the information transmission devices 9 and 10, and means for outputting the inventory status of the automatic material warehouse B and press product warehouse 1 based on the information to the production instruction system 17. It has

The setup management system 14 operates in response to a setup command from the production instruction system 17, and
A material preparation instruction panel 18 that instructs to obtain a material W by cutting it into a predetermined size and store the required number of materials W in an automatic material warehouse 8, and an unmanned trolley for taking out the desired material W from the automatic warehouse 8 The material setup instruction board 19 instructs the designated press machine M to set the designated number of molds at the designated time, and the desired molds 24 in the automated mold warehouse 23 are transferred to the carrier 25 of the designated press machine M at the designated time. A mold setup instruction panel 20 for instructing to set the mold 24 and a press machine setup instruction panel 21 for instructing to prepare the press machine M for operation when the setup of the material W and the mold 24 are completed are attached.

The setup management system 14 also includes the material W and the mold 24.
The apparatus is equipped with an output means for outputting that the setup has been completed.

The press working condition setting system 15 is operated by terminal devices 26 and 27.
The material W,
means for immediately and automatically determining whether the mold 24 conforms to the expected specifications; and means for automatically setting predetermined press working conditions for each type of target press product P and material W. It is equipped with A specific aspect of this setting means is to incorporate a current proportional control valve, store the output current value for each type of machining condition, and apply an input proportional to the output current value during operation. It is possible to adopt a system configured to automatically set oil and air pressure.

The press working conditions here include, for example, when the press machine M is a double-acting type for drawing forming, the hydro blank air tank pressure that determines the wrinkle pressing load, the gusset air pressure that determines the mold cushion ventilation pressure, Consider the trap of lifting mold weight □ Balance air tank pressure of appropriate size, point oil pressure at top dead center to transmit press pressure during pressurization, press speed, die height, etc.

The transport management system 16 processes the call signal sent from the terminal 28 of the body assembly line 5 via the production instruction system 17, and serves as a relay point between the automatic warehouse for pressed products 1 and the body assembly line 5. A means for commanding the operation of an unmanned trolley between the predetermined call line and the automated warehouse 1 for pressed products, and a means for commanding the operation of the unmanned trolley between the predetermined call line and the automated warehouse 1 for pressed products. and a means for commanding the operation of the unmanned trolley 22 at.

The production instruction system 17/ri inputs the production status signal sent from the terminal 2B of the body assembly line 5 and the pressed product inventory status signal sent from the information transmission device 10 of the automated warehouse 1 via the inventory management system 13. means for determining the production amount of press products P and its production line according to a pre-programmed automatic processing order determination function, a CRT that displays the production plan, and a transport command corresponding to the processing order of press products P. , setup commands are sent to the transport management system 1.
6. means for sending to the setup management system 14.

Next, the operation of this pressed product production system configured as described above will be explained.

A production status signal from the terminal 28 of the body assembly line 5,
Alternatively, when the production instruction system 17 receives a press product inventory status signal from the inventory management system 15, the production instruction system 17 automatically determines the processing order of the press products P according to the programmed standard order. In addition to determining the type and quantity of the panel product P to be produced and its production press twin 2, contents corresponding to the processing order trap are sent to the setup management system 14, transport management system 16, and press processing condition setting system 15, respectively. command is issued.

When the transport management system 16 receives a command from the production instruction system 17, the desired press product P in the automatic warehouse for press products 1 is transported to the relay point 6 of the body assembly line 5 by the unmanned cart 7.

At the same time, the desired press products P in the intermediate warehouse 3 of the press line 2 are transferred to the automatic warehouse for press products by the unmanned cart 4.
and stored in a designated location.

On the other hand, the corrugated foam management system 14 is the production instruction system 17.
When a command is received from the material preparation instruction panel 18, the material preparation instruction panel 19, the mold film removal instruction panel 20, and the press machine setup instruction panel 21 are operated as appropriate, and the material preparation instruction panel 18 is activated. The user is instructed to cut the material W to produce a material W and store the material W in the automated warehouse 8. Further, the material setup instruction panel 19 and the mold film removal instruction panel 20 instruct the user to set the desired material W and mold 24 from the automatic material warehouse 8 and automatic mold warehouse 25 into the designated press machine M, respectively. In this case, the unmanned cart 22 that transports the material W is operated according to instructions from the transport management system 16. When the setup of the material W and the mold 24 is completed, the press machine setup instruction panel 2
1 instructs the press machine M to start preparing for operation.

When the press working condition setting system 15 receives a command from the production instruction system 17, the press working condition setting system 15 compares the material setup completion signal from the terminal 26 with the material specification information, and also compares the material setup completion signal from the terminal 26 with the material specification information. The mold removal completion signal from No. 27 is compared with the mold specification information. As a result, when it is determined that the material W and mold 24 set in the press machine M are the ones that were planned and desired, a press that is suitable for the panel product P and material W to be produced is then used. Machining conditions are automatically set via a current proportional control valve, etc. This automatic setting of press working conditions is performed continuously or intermittently after the first stroke as necessary.

Press forming is performed under optimal processing conditions, and the obtained pressed product P is temporarily stored in an intermediate warehouse 3 of the press line 2. The press products P are transported from the intermediate warehouse 3 to the automatic press product warehouse 1 by an unmanned cart 4. In this case, the unmanned trolley 4 that transports the pressed product P is
Called by a signal from the terminal 29 of press line 2,
The operation of the unmanned trolley 4 is controlled based on commands from the transport management system 16.

(Effects of the Invention) As described above, the present invention is configured so that transportation management, setup management, production management, inventory management, and press processing conditions can be centrally controlled in an online real-time manner.
It is possible to accurately grasp the stock amount of raw materials and pressed products at all times, and it is possible to correspond to 7 lexiples for a multi-item, medium-volume production system. Even if there are large fluctuations in the production volume on the pressed product assembly line, it is possible to quickly maintain the appropriate amount of stock of various types of pressed products, so there is no shortage of stock on the conventional pressed product assembly line. It is possible to prevent the occurrence of defects.

Further, according to the present invention, since appropriate processing conditions can be automatically set according to the type of pressed product, there is no manual setting error as in the past, and a stable and uniform pressed product can be obtained. Furthermore, since the automation of material and mold setup changes is facilitated, combined with the automatic setting of press processing conditions, management man-hours are significantly reduced and productivity is improved compared to the past, especially for multi-product food products. In medium-volume production press factories, the effect of labor-saving and labor-saving is extremely large.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram showing a pressed product production system according to the present invention, and FIG. 2 is an overall configuration diagram illustrating the flow of a conventional kanban system. 1...Automated warehouse for pressed products, 2...Press line,
4... Unmanned trolley (second unmanned trolley), 5... Body assembly line, 7... Unmanned trolley (first unmanned trolley), 8...
・Automated warehouse for materials, 11... Centralized control computer,
13゛... Inventory management system, 14... Setup management system, 15... Pressing condition setting system, 1
6...Transportation management system, 17...Production instruction system, 24...Mold, P...Pressed product, W...Material,
M...Press machine.

Claims (1)

[Claims] (1) A means for confirming the part number and quantity of the stored items when carrying them into and out of an automatic warehouse for raw materials and an automatic warehouse for pressed products, a means for displaying the inventory amount of both the stored items, and the inventory. an inventory management system comprising a means for recording the quantity and a means for outputting the inventory status of items stored in both the automated material warehouse and the automated warehouse for pressed products; a storage instruction means for instructing to store the desired material stored in the automatic material warehouse until the material is stored in the press machine; A setup management system comprising a die set instruction means for instructing, a means for outputting a setup completion signal for setting the material and mold, and an operation preparation instruction means for instructing the press machine to prepare for operation after the setup is completed. and means for comparing the material set completion signal and mold set completion signal from the setup management system with material specification information and mold specification information, respectively, to determine that the materials and molds are as planned; A press processing condition setting system that is equipped with means for setting press processing conditions such as press load and die height for each type of required product using a current proportional control valve; means for instructing the transportation of the press products by a first unmanned cart from the automated warehouse for press products to the press product assembly line; a transportation management system comprising a means for instructing the transportation of the pressed product by a second unmanned cart toward an automated warehouse; and a production status signal from the pressed product assembly line and a means for instructing the transportation of the pressed product from the inventory management system. means for determining the processing order of the pressed products in response to an inventory status signal; means for outputting the determined press product processing order to the press processing condition setting system; A press product production system comprising: a production instruction system equipped with means for sending transport commands and setup commands according to press product processing order; and a press product production system.