Preparation method of boneless wiper plastic part

A boneless wiper and plastic parts technology, applied in the direction of coating, etc., can solve the defects of plastic parts, can not meet the process requirements and other problems, 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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Embodiment Construction

[0009] Preferred embodiments of the present invention are described below, and it should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0010] A method for preparing a boneless wiper plastic part, comprising the following steps: (1) drying the material before processing, and checking whether the material is completely dry by using the air injection method; (2) selecting more temperature control sections, and automatically Injection system with less friction and 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 generally formed by a hot runner mold, and there is a heat shield between the mold and the injection molding machine template; (4) Melt glue Temperature, measured using 270-295°C air shot method.

[0011] Further, in step (1), the drying temperature...

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PUM

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Abstract

The invention discloses a preparation method of a boneless wiper plastic part. The preparation method 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 generally, 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 the melting temperature of 270-295 DEG C. In the step (1), the temperature for drying the materials is 150 DEG C, and the time is above 4h. The preparation method 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 method of a boneless wiper plastic part. Background technique [0002] The boneless wiper itself is composed of four accessories: wiper rubber strip, boneless wiper steel sheet, wiper sheath and plastic parts. The steel sheet in the boneless wiper uses a whole guide steel sheet strip to disperse the pressure, so that the force on each part of the wiper blade is even, so as to reduce water marks and scratches. 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 method of a boneless wipe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/00
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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