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Production process of rubber diaphragm for vapor chamber

A technology of rubber diaphragm and production process, applied in the directions of brakes, brake transmissions, transportation and packaging, etc., can solve the problems of canvas centering, high thickness requirements of semi-finished films, etc. The effect of improving market competitiveness

Inactive Publication Date: 2002-02-20
宁波乔士橡塑有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a secondary vulcanization molding manufacturing process of the rubber diaphragm of the steam chamber to solve the problem of the centering of the canvas and the excessively high requirement for the thickness of the semi-finished film, thereby reducing the difficulty of the process, improving product quality, and reducing manufacturing costs. cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: in the first and second vulcanization, pressurization 18MPa, vulcanization temperature 165 ℃, dwell pressure vulcanization time 4 ', the product burst strength that obtains is 3.0-3.4MPa. Time 4 ', the product burst strength that obtains is 3.5-4.5MPa.

Embodiment 3

[0015] Embodiment 3: in the first and second vulcanization, pressurization 18MPa, vulcanization temperature 175 ℃, dwell pressure vulcanization time 4 ', the product burst strength 3.3-4.0MPa that obtains, this moment surface is sticky.

[0016] It can be seen from the above examples that the process condition of 170°C×4’×2 times is the most reasonable, and the product with high bursting strength can be obtained, and the problem of canvas eccentricity can be solved.

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Abstract

The present invention relates to the manufacturing process of air chamber rubber diaphram used for vehicle brake unit, it includes: preparation of rubber sheet and canvas raw material; using air chamber diaphram mould to proceed first vulcanization on vulcanization machine, the vulcanization is proceeded under setting temperature and pressure, during vulcanization, it automatically blows-off three times; then proceed second vulcanization with same procedure, finally demould, cooling, polishing, inspecting is proceeded to obtain product. Advantages: increased product quality, reduced production cost etc..

Description

technical field [0001] The invention relates to a manufacturing process of a steam chamber rubber diaphragm in an automobile braking component. Background technique [0002] The rubber diaphragm of the steam chamber is the core part of the brake parts of various medium and heavy vehicles with a load capacity of more than 3 tons. It is related to the driving safety of the vehicle. When the vehicle is braking, there is a high air pressure of about 0.8MPa, which pushes the steam chamber. The rubber diaphragm then pushes the push rod forward, and finally transmits the driving force to the brake patch in the wheel drum to achieve the purpose of braking. Therefore, the rubber diaphragm in the steam chamber is an essential key part in every car. The finished product requirements of the steam chamber rubber diaphragm are strictly required by both the international and the SAEJ1450-88 standards of the American Society of Automotive Engineers, such as bench life test, leakage measurem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C35/02B60T13/569
Inventor 诸先桥罗金润
Owner 宁波乔士橡塑有限公司
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