Novel windshield wiper elastic piece and manufacturing method thereof

A shrapnel and wiper technology, which is applied to other household appliances, household components, household appliances, etc., can solve the problems of stainless steel shrapnel not being resistant to salt spray corrosion, quality consistency, limited service life, etc., to achieve excellent surface quality, Overall low cost and high productivity

Inactive Publication Date: 2020-01-07
GUANGDONG YATAI NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of the automobile industry, the amount of wiper shrapnel is increasing, especially on SUV models. Stainless steel wiper shrapnel has the characteristics of excellent mechanical properties and high brightness. However, stainless steel shrapnel is not only not resistant to salt spray corrosion, but also The production process is complicated, there are many processes, and the quality consistency problem is very prominent. The products often contain unavoidable quality defects, and pollutants are discharged during the production process. restricted

Method used

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  • Novel windshield wiper elastic piece and manufacturing method thereof
  • Novel windshield wiper elastic piece and manufacturing method thereof

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preparation example Construction

[0025] The embodiment of the present application relates to a preparation method of a novel wiper shrapnel, comprising the following steps:

[0026] S1. Using continuous fiber aggregates as reinforcements and thermoplastic polymers as a matrix, the continuous fiber aggregates are passed through a mold with a cavity through a pultrusion process, and continuous elastic pieces are prepared under the traction of a drafting device;

[0027] S2. The continuous shrapnel is truncated according to the design requirements;

[0028] S3. Carrying out secondary heat setting on the fixed-length truncated shrapnel, placing the shrapnel in a molding die for hot-pressing and shaping, and obtaining a wiper shrapnel with a permanent arch in the length direction;

[0029] Specification parameters such as length, width, thickness and arch height of the shrapnel can be determined according to design requirements;

[0030] The continuous fibers are continuous carbon fibers and / or glass fibers;

[...

Embodiment 1

[0040] A preparation method of a novel wiper shrapnel, comprising the following steps:

[0041] S1. Continuous carbon fiber is used as reinforcement, thermoplastic polyurethane TPU is used as resin matrix, polyurethane resin is heated and melted in the resin tank, the heating temperature is 100-120°C, continuous carbon fiber passes through the resin tank and is completely impregnated with resin, and is made by pultrusion process The continuous fiber aggregate passes through a heated mold with a cavity (110-130°C), and is released under the traction of the drafting device, and is cooled by high-speed flowing air to prepare continuous shrapnel. The width of the shrapnel is 10mm, and the thickness of the shrapnel is 0.6mm;

[0042] S2. The continuous shrapnel is truncated according to the design requirements, and the length of the shrapnel is 700mm;

[0043] S3. Carry out secondary heat setting on the fixed-length truncated shrapnel, place the shrapnel in a mold with an arched ra...

Embodiment 2

[0045] A preparation method of a novel wiper shrapnel, comprising the following steps:

[0046] S1. Continuous glass fiber is used as reinforcement, thermoplastic polyurethane TPU is used as resin matrix, polyurethane resin is heated and melted in the resin tank, the heating temperature is 100-120°C, continuous glass fiber passes through the resin tank and is completely impregnated by resin, through pultrusion The process makes the continuous fiber aggregate pass through a heated mold with a cavity (130°C), and is released under the traction of the drafting device, and is cooled by high-speed flowing air to prepare continuous shrapnel, the shrapnel width is 6mm, and the thickness of the shrapnel is 0.8mm;

[0047] S2. The continuous shrapnel is truncated according to the design requirements, and the length of the shrapnel is 600mm;

[0048] S3. Carry out secondary heat setting on the fixed-length truncated shrapnel, place the shrapnel in a mold with an arched radian in the mid...

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Abstract

The invention provides a manufacturing method of a novel windshield wiper elastic piece. The manufacturing method of the novel windshield wiper elastic piece comprises the steps that a continuous fiber assembly serves as a reinforcing body, a thermoplastic high-molecular polymer serves as a basic body, the continuous fiber assembly passes through a mold with a mold cavity through a pultrusion technology, a continuous elastic piece is manufactured under the traction action of a traction device and cut off according to the fixed length required by the design, then the elastic piece is placed ina shape press mold to be subjected to thermal shaping for the second time, and therefore the windshield wiper elastic piece with the arch radian in the length direction is obtained. The manufacturingmethod is simple in technology and good in repeatability, and the performance of the windshield wiper elastic piece is better that that of a stainless steel windshield wiper elastic piece.

Description

technical field [0001] The invention relates to the field of resin-based composite materials, in particular to a novel wiper shrapnel and a preparation method thereof. Background technique [0002] With the development of the automobile industry, the amount of wiper shrapnel is increasing, especially on SUV models. Stainless steel wiper shrapnel has the characteristics of excellent mechanical properties and high brightness. However, stainless steel shrapnel is not only not resistant to salt spray corrosion, but also The production process is complicated, there are many processes, and the quality consistency problem is very prominent. The products often contain unavoidable quality defects, and pollutants are discharged during the production process. restricted. Contents of the invention [0003] In view of the above problems, the present invention provides a novel wiper shrapnel and a preparation method thereof. [0004] The object of the present invention adopts followin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/52B29C51/30B29C51/00B29C51/46B29L31/30
CPCB29C51/00B29C51/30B29C51/46B29C70/52B29C70/526B29L2031/305
Inventor 朱增余杨朝坤罗国伟刘飞跃
Owner GUANGDONG YATAI NEW MATERIAL TECH CO LTD
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