Intelligently adjust the control device for constant and precise control of mold cavity pressure
An intelligent adjustment and control device technology, applied in the field of plastic injection molding, can solve the problems of inability to accurately control the gas exhaust rate at a fixed speed, difficulty in matching the exhaust rate and injection pressure, difficulty in controlling the foaming process and cell structure, etc., to achieve Realize artificial adjustment and status monitoring, achieve stable and precise control, and achieve the effects of fast, stable and precise control
Active Publication Date: 2020-12-29
GUIZHOU MATERIAL IND TECH INSTITUE
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Problems solved by technology
[0004] The purpose of the present invention is to solve the problem that in the current injection molding system of plastic products, the stability of the gas pressure in the mold cavity is poor due to the instantaneous change of the mold cavity volume, and the gas discharge rate cannot be precisely controlled at a fixed speed, and the exhaust rate is difficult to match with the injection pressure. It is difficult to control the foaming process and cell structure in the foaming injection molding process, and the mold is prone to produce pits and other problems on the surface of the product caused by backpressure gas. A control device for intelligently adjusting the constant and precise control of the mold cavity pressure is proposed
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Embodiment 1
[0037] The preferred embodiment of the present invention provides a control device for intelligently adjusting the constant and precise control of mold cavity pressure. This control device is used in the injection molding system of plastic products and is used in conjunction with the heat exchange system of the injection molding system to complete the system temperature and pressure control, such as figure 2 As shown, the system includes:
[0038] External air connection system: including air supply interface 11, exhaust interface 12, mold cavity air inlet interface 13 and mold cavity exhaust interface 14.
[0039] The heat exchange system includes: a heater E21 for heating the gas to be input into the mold cavity inlet port 13 , and a cooler E22 for cooling the gas discharged from the mold cavity exhaust port 14 . The heater E21 is arranged between the first intake valve V311 and the intelligent regulator D1, and the cooler E22 is arranged between the mold cavity exhaust po...
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The invention discloses a control device for intelligent adjusting mold cavity pressure constancy and precise control. The control device comprises an outer gas connecting system controlling going inand out of mold cavity gas, a valve pipe system, a program control system and intelligent adjusting devices, wherein the intelligent adjusting devices read the parameters such as the screw diameter ofa injection molding machine, an injection molding speed, injection distance, injection molding time and mold cavity pressure, the program control system communicates with all intelligent adjusting devices, the work of the valve pipe system and the intelligent adjusting devices are controlled according to the relative parameters read by the intelligent adjusting devices and the inner volume of theintelligent adjusting devices in the injection process is changed, the constancy of the overall volume of the mold cavity and the intelligent adjusting devices in the injection process is achieved, and the stability and the precise control and stability of the inner pressure of the mold cavity are achieved.
Description
technical field [0001] The invention belongs to the field of plastic injection molding, and in particular relates to a control device for intelligently adjusting constant and precise control of mold cavity pressure. Background technique [0002] Micro-foaming is an important way to reduce the weight of plastic parts, but the surface quality of micro-foaming products is poor, and generally cannot be directly used for appearance parts, which limits the large-scale application of micro-foaming technology. A large number of researches have been carried out at home and abroad for surface quality problems, and the most effective methods are gas back pressure technology and dynamic mold temperature technology. [0003] At present, ZL201010278060.1 combines gas back pressure and dynamic mold temperature system, including two sets of independent gas back pressure supply unit and high temperature gas supply unit. The high temperature gas supply unit mainly heats the mold cavity surfac...
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IPC IPC(8): B29C45/76B29C45/78B29C45/34
Inventor 蒋团辉曾祥补张翔李胜男朱建华何力龚维张纯
Owner GUIZHOU MATERIAL IND TECH INSTITUE