JPS63114610A - Production system of injection-molded item - Google Patents

Abstract

PURPOSE:To make it possible to more shorten the delivery time than ever in multi-product and small quantity production by a constitution wherein the whole system ranging to the production of an injection-molded item consists of a plurality of part systems, which are controlled by a system management computer. CONSTITUTION:In premises, a flexible manufacturing system (FMS)2 for manu facturing mold and a FMS3 for manufacturing molded item are arranged. These two FMSs 2 and 3 are part systems, the actions of which are controlled on the basis of production instruction informations (a mold manufacturing informa tion and an molded item manufacturing information) outputted through a host computer 4 linked with a system management computer 12 to control the whole system. The system management computer operates production design informations, which are made by a computer aided design (CAD) system 22 for product design, a CAD system 23 for mold design and a computer aided manufacturing (CAM) system 24 for production design, all of which are supported by a computer aided engineering (CAE) system for technical aid, on the basis of NC data converted by the host computer 4.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a production system that automates all processes from development and design to production of injection molded products.

(Prior Art) Conventionally, in various production systems, Japanese Patent Publication No. 15635/1983 proposes a method for centrally controlling a plurality of numerically controlled machine tools in order to perform machining for high-mix, low-volume production. Further, Japanese Patent Publication No. 61-9128 proposes an automatic operation control system for an injection molding machine, a material conveying device, and a mold changing device in an injection molding device. These conventional techniques have been used particularly recently in FA of injection molding factories.
This is an important technology for achieving factory automation.

(Problem to be solved by the invention) However, although these techniques are effective as means for automating only the molding process for producing injection molded products, they are becoming more and more difficult in the recent high-mix, low-volume production. There is a demand for shorter delivery times, and a review of the production system for injection molded products is required to meet this demand.

(Means for Solving the Problems) The injection molded product production system of the present invention includes a plurality of partial systems in which the entire system up to the production of injection molded products is controlled by a system management computer. The system includes at least a mold manufacturing FMS linked to a mold design CAD system and a molded product manufacturing FMS linked to a product design CAD system. Other partial systems include an automatic mold warehouse and a system that automatically packs and ships molded products.

(Operation) The mold design information designed by the mold design CAD system is converted into mold manufacturing information necessary for operating the mold manufacturing EMS via the CAM system. F for mold making
The MS produces molds based on this information and stores them in an automatic mold warehouse. On the other hand, product design information designed by the product design CAD system is converted to molded product manufacturing information etc. necessary for operating the molded product manufacturing EMS via the CAM system. The molded product manufacturing FMS performs injection molding, post-processing inspection, etc. based on this information. The system management computer is the CAD system for mold design, C for product design.
We manage all design and production processes such as the AD system, mold manufacturing EMS, automatic mold warehouse, and molded product manufacturing FMS, and also manage the mold manufacturing FMS, automatic mold warehouse, and molded product manufacturing EMS. Data such as production results, inventory, and inspections obtained from the system are sent to the system management computer and become management information.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a conceptual diagram showing a factory site in which a production system for injection molded products according to the present invention is realized.

Site 1 shown in Figure 1 is an FMS (Flexi) for mold production.
ble Manufacturing System)
2 and an injection molding FMS 3 are arranged. These 2
The FMS 2゜3 receives production instruction information (mold production information and molded product production information) output via a host computer 4 (see Figure 2) linked to a system management computer 12 that controls the entire system. It is a partial system whose operation is controlled based on Moreover, this host computer 4 is located in a local area (LAN).
We have built a system (Network) that integrates all processes from mold production to finished molded products by sharing a database.

The mold manufacturing process managed by the mold manufacturing FMS 2 is composed of an NC machining plate 7 and an electric discharge machine 8, etc. that process the mold material, and based on the mold information, the mold manufacturing process is performed from coming to work to machining,
Each process from measurement evaluation to finishing is carried out by CNC (Comp
Numerical Control). Further, in this mold manufacturing process, the workpiece to be machined and the tools used are transported between the NC processing machine 7 and electric discharge machine 8 and the plurality of work tables 13b by the automatic guided vehicle 13a. The mold manufactured by this mold manufacturing FMS 2 is processed according to the storage/output information output from the host computer 4 through the LAN system.
The mold is placed on a mold carrier 14, which is an unmanned truck, and automatically entered and taken out of the automatic mold warehouse 9. This warehousing/discharging information, information indicating the mold manufacturing results in the mold manufacturing FMS 2, and mold evaluation information measured and evaluated by a three-dimensional measuring device, for example, are sent to the system management computer 12 via the host computer 4 through the LAN system. sent to. On the other hand, when performing injection molding, the mold carrier 14 transports molds designated by the host computer 4 to the automatic mold warehouse 9.
Take it out and transport it to FMS3 for injection molding.

FMS 3 for injection molding has multiple injection molding machines 15°1
5 group management control system, mold exchange, injection molding,
It consists of various process systems such as post-processing and inspection of molded products. Each process system is equipped with an automatic machine equipped with a microcomputer and a sequencer, and an appropriate injection molding machine 15 is assigned based on the molded product production information sent from the host computer 4, and a production plan created by the system management computer 12 is used. Based on this, molding is performed for the number of productions instructed by the host computer 4. Inspection data of the molded product is sent from the host computer 4 to the system management computer 12.

On the other hand, the molded product molded by the injection molding FMS 3 is transported to a secondary processing table 17 by a molded product transport vehicle 16, and is shipped through an inspection process 18 and a packaging/shipping process 19. The shipment amount is sent to the system management computer 12 via the host computer 4 as information indicating product delivery results.

In FIG. 2, the mold manufacturing FMS 2 and injection molding FMS 3 are each a technical support CAE system 21.
CAD system for product design 22, CAD system for mold design 23 and C for production design supported by
Operations are performed based on NC data obtained by converting production design information created by the AM system 24 by the host computer 4. Said mold design CAD system 2
3 and the production design CAM system 24 are linked to the mold manufacturing FMS 2, and the product design CAD system 22 and the production design CAM system 24 are linked to the injection molding FMS 3.

Then, in the product design CAD system 22, a cavity is designed based on the input geometric model inside the computer, and standard parts stored in the standard parts database are called up, and the parts such as gou plates and various bottles are designed. Perform mechanism design.

The mold design CAD system 23 includes a part of the cavity for obtaining the shape of the molded product, a flow mechanism for guiding the molten material from the nozzle of the molding machine to the cavity, a protrusion mechanism for taking out the molded product from the mold, etc. Part data is created by appropriately extracting the design from the common parts file stored in the mold design file.

The part data designed in this way by the mold design CAD system 23 is converted into the mold manufacturing information (NC data) using the process design database, and is converted into the mold manufacturing information (NC data) by the mold manufacturing FMS 2 and the injection molding Sent to FMS3.

The production design CA/M system 24 creates data necessary for production planning and management, such as a bill of materials, and converts it into a data file. The parts list converted into a data file is then used as production management data.

The technical support CAE system 21 replaces graphical information designed with a focus on product functions into information based on the mold, such as draft angles required for mold design and corrections for resin shrinkage during molding. This technical support CA is equipped with calculation software that performs strength calculations, phase calculations, etc.
The E system 21 contains information 11 necessary for mold manufacturing (processing condition data, tool data, inspection information, etc.) and information necessary for molding (material data, molding condition data, membrane weir condition data, preheating condition data, product information). , inspection information, production quantity, etc.) are input from, for example, a file created in advance.

Based on this information, the technical support CAE system 21 uses the product design CAD system 22 and the mold design CAE system 21.
It supports the D system 23 and the CAM system 24 for production design.

Next, the linked operation of each of the above-mentioned systems will be explained.

Various automatic machines that receive production instruction information from the host computer 4 perform optimal processing scheduling, setup, and the like. This scheduling is managed in real time,
Of course, task management can be done not only by single task, but also by multitasking simultaneously. Various automatic machines automatically control their operation based on data sent from the host computer 4, while also monitoring mold processing results, mold evaluation, production results, work results (progress, etc.), and molded product inspections obtained during operation. Information such as data and product delivery results is sent from the host computer 4 to the system management computer 12 and stored as system management information. The system management computer 12 grasps the progress status of each process based on this system management information, and performs data processing such as product inventory and mold inventory management and cost calculation according to a management program installed in advance.

In the above-mentioned embodiment, all processes from product development and design to production are controlled in accordance with the amount of orders inputted to the system management computer 12, but in addition to this, online communication with external parties is being implemented. By building a VAN system, all systems from ordering to production can be fully automated using a computer.

Further, in the above-mentioned embodiment, CAT (Computer
An AidedTesttng) system can also be added.

(Effects of the Invention) As described above, according to the present invention, by automating the entire process from product development and design to production, high-mix low-volume production can be performed extremely efficiently and delivery times can be shortened. . Also, CAE, CAD.

Since it is a production system with CAM at its core, it can easily respond to design changes.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing various automatic machines placed on the factory premises that have realized the production system for injection molded products according to the present invention, and FIG. 2 is a block diagram showing the control system of the production system of this example. 2... FMS for mold production 3... FMS for injection molding 4... Host computer 12... System management computer 21... CAE system for technical support 22... CAD system for product design 23. ... CAD system for mold design 24 ... CAM system for production design Patent applicant Sekisui Chemical Co., Ltd. Representative Hiroshi 1) Kaoru

Claims (1)

[Claims] 1) The entire system up to the production of injection molded products is composed of a plurality of partial systems controlled by a system management computer, and the partial systems are at least linked to a mold design CAD system. A production system for injection molded products, comprising an FMS for mold production linked to a mold production FMS and a CAD system for product design. 2) The injection molded product production system according to claim 1, wherein the CAD system and the CAM system linked to the CAD system are supported by a CAE system.