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Injection molding device and injection molding method

A technology of injection molding and mould, which is applied in the direction of coating, etc., can solve problems such as flashing, poor dimensional accuracy, and easy defects in the orifice, and achieve the effect of accurate size, small diameter, and extended service life

Active Publication Date: 2017-08-18
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The main purpose of the present invention is to overcome the deficiencies of the prior art, provide a kind of injection molding device and injection molding method, solve the problem that the existing injection molding device and method are difficult to make micron-scale micropores and micropore arrays, poor dimensional accuracy and orifice Prone to defects and flashing problems

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  • Injection molding device and injection molding method

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Embodiment Construction

[0030] Embodiments of the present invention will be described in detail below. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0031] refer to figure 1 , in one embodiment, an injection molding device, comprising an upper mold and a lower mold, the upper mold or the lower mold is provided with a steel needle insert with a steel needle, the lower mold or the upper A layer of elastic film is arranged on the mold surface of the mold opposite to the steel needle, the shape and size of the steel needle are the shape and size required for injection molding micropores, and the steel needle is drawn from the upper mold or the lower mold The top protrudes toward the elastic film, and is arranged such that the end surface of the steel needle is pressed into the interior of the elastic film after the mold is closed. By controlling the pressing depth of the steel needle, the deformation ...

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Abstract

The invention discloses an injection molding device and an injection molding method. The device comprises an upper mold and a lower mold; a steel needle insert with a steel needle is arranged on the upper mold or the lower mold; a layer of elastic film is arranged on the mold surface, opposite to the steel needle, of the upper mold or the lower mold; the shape and the size of the steel needle are the shape and the size needed to form microholes by injection molding; and the steel needle is projected to the elastic film from the upper mold or the lower mold, and is set to enable the end surface of the steel needle to press into the elastic film after mold closing. The device and the method can effectively solve the problems of difficult manufacturing of micron-scale microholes and microhole arrays, poor size precision and great possibility of generation of defects and flanges in hole mouths in traditional injection molding device and method.

Description

technical field [0001] The invention relates to an injection molding device and an injection molding method. Background technique [0002] Injection molding refers to a molding method in which molten plastic is injected into a mold with pressure and cooled to form a plastic part. Injection molding has the advantages of fast speed, high efficiency, simple process, and accurate size, and is suitable for mass production and the production of parts with complex shapes. In the injection molding equipment, the injection mold is an important tool to give the plastic product a complete structure and precise size. The plastic is under pressure in the molten state to fill the cavity of the injection mold, and after cooling, the injection molded part with the same shape and size as the cavity can be obtained. The injection molding of micro-spray holes and micro-hole arrays, especially the production of micro-holes below 100 microns, is a challenge for injection molding. Due to the di...

Claims

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Application Information

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IPC IPC(8): B29C45/14B29C45/76B29C45/26
CPCB29C45/14795B29C45/26B29C45/76
Inventor 张旻孙灵俊黄家祥
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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