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Injection molding machine control system development and improvement of advisory services - injectio

By: HotBoy

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Modern plastics injection molding machine is a set of mechanical, electrical, fluid in one typical system, this device has a shape as complex products, less post processing, processing of the plastic variety characteristics such as rapid development since its inception At present more than 80% of the world engineering plastic injection molding machines are used for processing.

Conventional injection molding machines generally use a simple open-loop control, which is controlled in accordance with pre-set value. In the equipment manufacturing process, pre-configured parameters, such as clamping force, cycle time, temperature, etc., from machinery to be maintained in the production process. Such as mold temperature can be controlled to maintain the temperature of the fluid heating, plasticizing temperature can be controlled to maintain external heating power. This control method is simple, but the anti-interference ability, control of temperature is relatively low.

Currently, more injection molding machine is closed loop control, that is, according to online measurement of the deviation value and set value to control. Closed-loop control system uses a negative feedback loop, anti-interference ability, when the injection speed, injection pressure, cavity temperature, cavity pressure, melt temperature and oil pressure due to interference in the manufacturing process deviation, then the machine control system by automatic correction of the interference. The control interference resistance, high control precision. More advanced control method is to apply computer control, that is, to build closed-loop real-time computer control system.

Injection molding machine industry in China has not a business has its own injection molding machine control system, are directly purchased from a third party injection molding machine control system installed in its own injection molding machine. This strategy directly limit the technical content of the injection molding machine in China, even if the injection molding machine injection molding business has its own process control technology, making it difficult for third party control system to achieve, because third-party control system can control all its windows open for technical personnel of enterprises to set up and change. The foreign key injection molding machine business (such as HUSKY, BATTENFELD, DEMAG, ENGEL, ARBURG, NETSTAL, DR.BOY, etc.) has its own injection molding machine control system ( PLC & HMI).

Injection molding machines in addition to help improve the performance and protection of intellectual property rights, enhance their competitive advantage, foreign, but also greatly enhance the innovation capability of enterprises, especially in mechanical innovation. In mechanical structures such as access to innovation, there must be a fully autonomous, flexible, open to be with a good control system.

We have a very extensive injection molding machine control system development experience, from the bottom of the speed, position, pressure, tonnage, temperature control circuit design to the above HMI Design, we can help customers with technical innovations. Our team has developed in the HUSKY control group (ControlDevelopmentGroup) worked for 10 years the core R & D personnel, HUSKY of POLARIS control platform for many of the features we are introduced. Our injection molding machine control system design and improvement of a solid theoretical foundation and rich experience of practical research and development. The concept of control system design, functional design, system architecture design, algorithm design, program and data structure design, code design, functional testing, system upgrade, add special features, production system design, service, remote diagnosis, machine commissioning, etc. We can provide help and services.

Injection molding machine control system performance varies with the process control algorithm, which is the core of the whole control system.

--- The design of speed control loop
--- The design of position control loop (open loop or closed loop)
--- Clamping tonnage of control loop design
--- Temperature control loop design (if hydraulic system, oil temperature control is also crucial)
--- Pressure control loop design --- Speed control and pressure control switch effectively and smoothly
--- Off the pressure to protect the control design model
--- Smooth control of multi-segment curve generator design
--- Output linearization control design

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Article Source: http://depositarticles.com/

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