Preparation process of wiper plastic part with bones

A preparation process and technology of plastic parts, applied in the direction of coating, etc., can solve the problems of not meeting the process requirements and defects of plastic parts, etc., and achieve the effect of good product quality and simple injection molding process

Inactive Publication Date: 2015-08-12
LIUZHOU JINDUN MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the plastic parts are molded, there is a certain difference from the predetermined quality standard (inspection standard), which cannot meet the requirements of the next process. This is the defect of the plastic part, which is often referred to as a quality problem. its minimized

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0010] Embodiment A preparation process of bone wiper plastic parts, including the following steps, (1) drying the material before processing, and checking whether the material is completely dry by air injection method; (2) selecting more temperature control sections, plasticizing Injection system with low self-friction heat generation, the actual weight of the product is greater than or equal to 2 / 3 of the injection volume of the machine; (3) The embryo body is formed by a hot runner mold, and there is a heat shield between the mold and the injection molding machine template; (4) Melting The glue temperature is measured by the air-shot method, and the temperature is set at 290-315°C.

[0011] Further, in step (1), the drying temperature of the material is 170° C. for more than 3-4 hours.

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PUM

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Abstract

The invention discloses a preparation process of a wiper plastic part with bones. The preparation process comprises the following steps: (1) drying materials before processing, and testing whether the materials are dried completely or not by an air injection method; (2) selecting an injection system with more temperature control sections and little self-friction heating during plasticization, wherein the actual weight of a product is not less than 2/3 of the injection amount of a machine; (3) molding a blank by a hot runner mold, wherein a heat insulation plate is arranged between the mold and a mold plate of an injection molding machine; and (4) measuring by the air injection method at melting temperature, wherein the temperature is set to be 290-315 DEG C. In the step (1), the temperature for drying the materials is 170 DEG C, and the time is above 3-4h. The preparation process disclosed by the invention has the characteristics of simple process and good product quality.

Description

technical field [0001] The invention belongs to the technical field of auto parts, and relates to a preparation process of a bone wiper plastic part. Background technique [0002] The principle of the bone wiper is to press the wiper blade on the glass through several support points on the skeleton, so that the pressure of each support point on the wiper blade is averaged. However, after the plastic parts are molded, there is a certain difference from the predetermined quality standard (inspection standard), which cannot meet the requirements of the next process. This is the defect of the plastic part, which is often referred to as a quality problem. It is reduced to a minimum. Contents of the invention [0003] The invention aims at overcoming the defects of the prior art, and provides a preparation process of a bone wiper plastic part, which has the characteristics of reasonable process and good product quality. [0004] The purpose of the present invention is specific...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/00B29C45/78
CPCB29C45/00B29C45/78
Inventor 何拥军何嘉圣何嘉贤陈林黄立德赖卫华
Owner LIUZHOU JINDUN MACHINERY
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