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Light curing injection mold cores and manufacturing method thereof

An injection mold, light curing technology, applied in the direction of additive processing, etc., can solve the problem of poor mold accuracy, and achieve the effect of optimizing strength and thermal conductivity, reducing manufacturing costs, and shortening production cycles

Inactive Publication Date: 2016-05-25
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, various rapid mold manufacturing methods have emerged as the times require, and the current common rapid mold is indirect moldmaking. Since the mold has been remade, the accuracy of the mold is relatively poor.

Method used

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  • Light curing injection mold cores and manufacturing method thereof
  • Light curing injection mold cores and manufacturing method thereof
  • Light curing injection mold cores and manufacturing method thereof

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Embodiment Construction

[0030] The purpose and technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific examples, but the present invention is not limited to this example.

[0031] According to the part structure ( figure 1 ) to design the mold structure. The design includes not only the injection cavity (fixed mold cavity 106, movable mold cavity 206), but also the corresponding gating system (such as fixed mold sprue 104, fixed mold runner 105, movable mold runner 204) and demoulding system (such as thimble hole 205). The dimensional accuracy and surface roughness of the light-curing mold core are higher than the precision required for the manufacture of plastic parts. At the same time, during the backfilling process, the external dimensions of the core part of the shell should be kept unchanged, so the shell thickness of the core is 2 -5mm, while removing a non-mating surface of the core.

[0032] Load confo...

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Abstract

The invention discloses light curing injection mold cores and a manufacturing method thereof. The light curing injection mold cores comprise a fixed mold core and a movable mold core. The manufacturing method includes the following steps that firstly, layering is conducted on the designed fixed mold core or the movable mold core which is subjected to shelling and comprises a pouring system and a conformal cooling channel with layering software, the layered fixed mold core or movable mold core is loaded to a rapid light curing forming machine, and a shell of the fixed mold core or the movable mold core is manufactured; then a backfilling material is manufactured, vacuum stirring processing is conducted on the backfilling material with a vacuum casting machine, a shell pouring cavity of the fixed mold core or the movable mold core is filled till the shell pouring cavity is fully filled, curing is conducted at the room temperature for 10-24 hours, and the light curing injection mold cores are obtained. The light curing injection mold cores which are manufactured in a light curing mode and provided with the conformal cooling channel and subjected to backfilling are short in manufacturing cycle, low in manufacturing cost and applicable to rapid manufacturing of medium or small batches of injection products and rapid trial-manufacture and performance detection of new products and the like.

Description

Technical field: [0001] The invention belongs to the technical field of rapid mold and injection molding, and in particular relates to a light-cured injection mold core and a manufacturing method thereof. Background technique: [0002] Injection molding is a processing method in which molten plastic is injected into a mold under high pressure and cooled and solidified to obtain plastic products. It has the advantages of high pass rate, stable product quality, high degree of automation, low cost and high production efficiency, and occupies a very important position in plastic production. According to statistics, injection molds account for more than 50% of the total plastic molds. Since the manufacture of traditional injection molds requires processing methods such as turning, milling, planing, drilling, grinding, and electric sparks to obtain the required mold shape and size, it often takes a long time to design and manufacture a qualified injection mold. After many iterat...

Claims

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Application Information

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IPC IPC(8): B29C33/38B29C45/26B29C67/00B33Y10/00B33Y80/00
CPCB29C33/38B29C45/26B33Y10/00B33Y80/00B29C2033/385
Inventor 王永信冯路开吴华英梁晋刘光辉赵蒙
Owner XI AN JIAOTONG UNIV
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