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Injection molding machine and injection speed control method

A technology of injection molding machine and injection speed, which is applied in the field of injection molding machine and injection speed control, can solve problems such as poor reliability, and achieve the effect of solving poor reliability of injection speed

Inactive Publication Date: 2020-01-03
HENAN PINGGAO GENERAL ELECTRIC CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an injection molding machine to solve the problem of poor reliability of manual subjective judgment of injection speed; in addition, the purpose of the present invention is to provide a method for controlling injection speed

Method used

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  • Injection molding machine and injection speed control method
  • Injection molding machine and injection speed control method
  • Injection molding machine and injection speed control method

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Experimental program
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Effect test

specific Embodiment 6

[0033] Embodiment 6 of the injection molding machine of the present invention differs from Embodiment 1 of the injection molding machine of the present invention only in that the intake valve and the exhaust valve are manually controlled.

[0034] The specific embodiment 7 of the injection molding machine of the present invention differs from the specific embodiment 1 of the injection molding machine of the present invention only in that: the injection pipeline is provided with a throttle valve, and the valve can be adjusted by adjusting the opening of the throttle valve. The injection speed of the material.

specific Embodiment 8

[0035] The specific embodiment 8 of the injection molding machine of the present invention differs from the specific embodiment 1 of the injection molding machine of the present invention only in that: for the convenience of control, the intake valve and the exhaust valve may not be provided, but a two-position three-position valve may be provided. Through the electromagnetic reversing valve, two of the valve ports are respectively connected to the intake pipe and the exhaust pipe, and one of the valve ports is connected to the mixing container. The reversing valve is controlled by inputting control signals to the two-position three-way electromagnetic reversing valve. Switch between the communication position between the intake channel and the mixing container and the communication position between the exhaust channel and the mixing container, and then realize the on-off of the intake channel and the exhaust channel to control the feeding speed.

[0036] The specific embodimen...

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Abstract

The invention provides an injection molding machine and an injection speed control method, and belongs to the technical field of resin injection molding. The injection molding machine comprises a material mixing container for mixing a material, and the material mixing container is provided with a discharging port; and the injection molding machine further comprises a weighing device for measuringthe weight of the material in the material mixing container, the weighing device is connected with a weight information processing unit for calculating the injection speed according to the weight change of the weighing device, and the material mixing container is connected with an injection speed control device used for controlling the injection speed of the discharging port. The material in the material mixing container is weighed to obtain the weight change amount of the material in the material mixing container per unit time, and then the injection speed of the material is calculated through the weight change amount, therefore the injection speed of the material is increased or decreased correspondingly according to a difference value between the actual measured injection speed and thepreset speed, and the control over the injection speed of the material is realized.

Description

technical field [0001] The invention relates to an injection molding machine and an injection speed control method. Background technique [0002] APG (Automatic Pressure Gelation Process) epoxy resin molding technology is a new epoxy resin molding technology developed in my country in recent years. The core of the method is to inject the raw materials in the mixing car into the mold through positive air pressure. The forming machine heats and forms the mold. The injection molding cycle usually includes a metering step, a mold clamping step, an injection step, a pressure holding step, a demoulding step and a post-processing step, wherein the injection speed of the epoxy resin in the injection step is closely related to the appearance and quality of the product. The key to APG technology is the application process. This process is similar to the thermoplastic injection process. First, mix various materials evenly in the mixing container. After vacuum degassing, the material li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/77
CPCB29C45/77B29C2945/76595
Inventor 张何平孙琪张二勇孙中航李冬胜李旭培陈晓丽宋晓光朱龙举娄海东王胜杰李宗轲陈光徐昭彬
Owner HENAN PINGGAO GENERAL ELECTRIC CO LTD