Demoulding device specially for micro-injection forming instrument

A demoulding device and micro-injection technology, which is applied in the field of processing and manufacturing polymer material performance test specimens, can solve the problems of high risk of injury to demoulding operators, difficulty in ejection, difficulty in guaranteeing spline geometry, dimensional accuracy and appearance, etc.

Inactive Publication Date: 2013-10-23
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a spline demoulding device used in conjunction with a micro-injection molding machine to solve the difficulty in releasing the low-shrinkage polymer

Method used

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  • Demoulding device specially for micro-injection forming instrument
  • Demoulding device specially for micro-injection forming instrument
  • Demoulding device specially for micro-injection forming instrument

Examples

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Example Embodiment

[0028] Example 1

[0029] The special demoulding device for the micro injection molding instrument of this embodiment has the structure as attached figure 1 , Attached figure 2 , Attached image 3 And Figure 4 As shown, it is composed of a mold petal 6 and a demolding bed frame 7. The mold petal is half of the shaft-to-section combined structure mold, and is designed with a mold cavity 2 and a spline ejector pin 3, and the spline ejector pin is a cross-sectional size 4mm×4mm square structure, the end surface of one end of the abutting spline is consistent with the wall surface of the mold cavity, and the outer end surface is consistent with the outer edge surface of the mold petal, which is in sliding fit with the square thimble assembly hole on the mold petal. The thimble assembly hole is located at the big end of the mold. , Close to the pouring port 1. The demolding bed frame is designed with a mold petal positioning and mounting structure and an ejection mechanism, wherein...

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Abstract

The invention discloses a demoulding device specially for a micro-injection forming instrument. The demoulding device mainly comprises a mould petal and a demoulding bed base, wherein the mould petal is a half of an axle bisection composite structure mould and provided with a mould cavity and a spline demoulding thimble; the demoulding bed base is provided with a mould petal positioning mounting structure and an ejection mechanism, an ejection component of the ejection mechanism is matched with the spline demoulding thimble, the mould petal positioning mounting structure is matched with the mounting part of the mould petal, and the mould petal is mounted on the demoulding bed base in a way that an assembling surface faces downwards and the mould cavity is suspended. The demoulding device disclosed by the invention is capable of well solving the problems that when a contractile tiny high polymer material melt is injected into the mould, a cooled spline is firmly embedded in the mould and is hard to demould; the high polymer material spline hard to demould can be safely and conveniently demoulded from the mould cavity while ensuring geometric shape, size precision and perfect appearance of the spline, any damage is avoided, and the reliable guarantee is provided for the high polymer material performance testing.

Description

technical field [0001] The invention relates to the processing and manufacturing technology of a polymer material performance test sample, and more specifically relates to a demoulding device used in conjunction with a micro-injection molding machine. Background technique [0002] The Haake (Haake) MiniJet micro-injection machine, represented by Thermo Fisher Corporation of the United States, is the smallest plunger-type micro-injection machine in the world launched in recent years, because it uses less material (polyethylene) Stretching spline 1.5g, impact spline 3.5g), fast heating speed, precise temperature control, convenient sample change and cleaning, etc. It is a rare and important instrument in the processing, research and teaching of polymer materials, and it is being used in many countries The high-end laboratory is mainly used in teaching and scientific research to prepare test specimens for the performance of polymer materials. [0003] Use the MiniJet micro-inj...

Claims

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Application Information

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IPC IPC(8): B29C45/40
Inventor 侯世荣刘艳范英羊彦衡陈卫王郑红
Owner SICHUAN UNIV
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