Abrasion-resistant plastic gear and manufacturing method thereof

A technology for plastic gears and manufacturing methods, which is applied in the field of wear-resistant plastic gears and its manufacturing, can solve problems such as poor toughness, low strength, and easy whitening, and achieve stable product quality, increase production efficiency, and reduce production costs.

Inactive Publication Date: 2012-06-27
ANHUI APPROPRIATE WANFENG ELECTRIC APPLIANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to alleviate the deficiencies and defects of the prior art, the object of the present invention is to provide a wear-resistant plastic gear and its manufacturing method. Poor physical properties such as poor strength and low strength. At the same time, the injection molding process is stable, and the quality of the obtained products is stable, which improves production efficiency and reduces production costs.

Method used

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  • Abrasion-resistant plastic gear and manufacturing method thereof
  • Abrasion-resistant plastic gear and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: wear-resistant plastic gear, its composition raw materials include composition A and composition B, said composition A: nylon 6645 parts and nylon 66+30% GF 45 parts; composition B: polyester fiber 20 parts , 10 parts of glass fiber, 5 parts of polymethyl methacrylate, 5 parts of high wear-resistant carbon black, 3 parts of cation exchange resin, 5 parts of gypsum powder, 5 parts of alumina, 3 parts of stearic acid, 3 parts of silicon powder , 5 parts of polytetrafluoroethylene, 3 parts of organic carbon and 5 parts of kaolin.

[0019] A method for manufacturing a wear-resistant plastic gear, comprising the following steps:

[0020] (1) After mixing nylon 66 and nylon 66+30% GF raw materials, carry out drying treatment. The drying temperature is 100-120°C, and the drying time is 4-6 hours. Under drying for 24-28h;

[0021] (2) Weigh each raw material according to the weight part of composition B raw material, carry out drying treatment, the drying temperatu...

Embodiment 2

[0028] Embodiment 2: wear-resistant plastic gear, its constituent raw materials include composition A and composition B, described composition A: nylon 6655 parts and nylon 66+30% GF 55 parts; Composition B: polyester fiber 35 parts , 15 parts of glass fiber, 10 parts of polymethyl methacrylate, 10 parts of high wear-resistant carbon black, 5 parts of cation exchange resin, 10 parts of gypsum powder, 10 parts of alumina, 8 parts of stearic acid, 5 parts of silicon powder 15 parts of polytetrafluoroethylene, 5 parts of organic carbon and 10 parts of kaolin.

[0029] A method for manufacturing a wear-resistant plastic gear, comprising the following steps:

[0030] (1) After mixing nylon 66 and nylon 66+30% GF raw materials, carry out drying treatment. The drying temperature is 100-120°C, and the drying time is 4-6 hours. Under drying for 24-28h;

[0031] (2) Weigh each raw material according to the weight part of composition B raw material, carry out drying treatment, the dryi...

Embodiment 3

[0038] Embodiment 3: the performance detection of the wear-resistant plastic gear that the present invention makes:

[0039]

[0040]

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Abstract

The invention discloses an abrasion-resistant plastic gear and a manufacturing method thereof. The method mainly comprises the following steps of: adding dried and proportioned raw materials into a heated injection molding machine, setting injection pressure, speed, time and glue quantity of different stages of the injection molding machine, setting final protective pressure and protective pressure speed to achieve an optimal injection molding technology, and thus obtaining a final qualified product. The method overcomes the physical property defects of whitening, breakage, poor toughness, low strength and the like when the abrasion-resistant plastic gear is formed by injection molding; and the injection molding technology has stability, the obtained product is stable in quality, the production efficiency is improved, and the production cost is reduced.

Description

Background technique [0001] The invention relates to a wear-resistant plastic gear and a manufacturing method thereof, belonging to the technical field of mechanical manufacturing. Background technique [0002] Plastic gears are developing towards larger sizes, more complex geometries, and higher strength. At the same time, high-performance resins and long glass fiber-filled composites have played an important role in promoting plastic gears in the past 50 years. Having gone through a process of change from new materials to important industrial materials, today they have penetrated into many different applications, such as automobiles, watches, sewing machines, structural control facilities and missiles, etc., to transmit torque and form of motion. . [0003] More advanced plastic gear molding methods are being developed, such as secondary injection molding, by designing an elastic body between the axle and the teeth to make the gear run more quietly, and when the gear stop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L67/00C08L33/12C08L27/18C08K13/04C08K7/14C08K3/04C08K3/22C08K3/36C08K3/34C08K5/09B29C45/78B29C45/77B29C45/76
Inventor 吴康希仇珍芳章云金川人邵登
Owner ANHUI APPROPRIATE WANFENG ELECTRIC APPLIANCE
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