Air chamber rubber diaphragm vulcanization module

Abstract

The invention discloses an air chamber rubber diaphragm sulfuration module. The air chamber rubber diaphragm sulfuration module comprises multiple molds. Each one of the multiple molds comprises an upper mold, a middle mold and a lower mold. The upper mold presses the middle mold, the upper mold fits to the upper part of the middle mold so that an upper mold chamber is formed, the middle mold presses the lower mold, and the lower part of the middle mold fits to the lower mold so that a lower mold chamber is formed. The lower mold is buttoned by a pressing ring which fits to the lower mold thereby clamping a canvas, a pressing zone of the pressing ring corresponding to the lower mold is provided with a corrugated structure comprising matched male and female parts, the lower mold is provided with a positioning frame for limiting the canvas in the positioning frame, the positioning frame is arranged around the lower mold chamber and the center line of the positioning frame is coincident with that of the lower mold chamber. The middle mold of each one of the molds is inset into a middle mold plate, the circumference of the middle mold is provided with a first circular groove, the middle mold plate is provided with a second circular groove, after the middle mold is inset in the middle mold plate, the first circular groove and the second circular groove form a cross section-enclosed annular channel, and a first snap ring for fixing the middle mold in the middle mold plate is insert into the annular channel.

Description

technical field [0001] The invention relates to the field of production molds for automobile brake air chamber rubber diaphragms, in particular to a module capable of simultaneously producing a plurality of air chamber rubber diaphragms according to a secondary vulcanization process. Background technique [0002] Automobile brake air chamber rubber diaphragm is a key component widely used in various types of heavy-duty vehicles (trucks, trailers, passenger cars, military vehicles, etc.) to seal and transmit pressure brakes in braking systems and air brakes. Increase the pressure of the air chamber through the displacement of the rubber diaphragm to open the brake pads and hold the wheel tightly to achieve the braking effect. It is a rubber product related to machine crashes and fatalities, also known as safety components. As people's requirements for high speed, comfort, and reliability (safety) of automobiles are getting higher and higher, higher requirements are put forwar...

AI Technical Summary

Problems solved by technology

However, in actual use, this type of mold still has disadvantages: there is a gap between the pressure ring and the integral vulcanization lower mold, and the two are tightly pressed only after the pressure ring falls. Due to the tolerance of the thickness of the canvas, the product There is a single bias phenomenon; moreover, this type of mold structure determines that the secondary vulcanization process is completed in two feedings, and it is difficult to ensure that the center of the canvas and the center of the lower mold cavity are on the same axis when the cloth is placed, and the diaphragm cloth is easy to place. , so that the pressure ring fails because the cloth cannot be clamped, causing the product to lack cloth or the product to be one-sided

In order to avoid these problems, it is necessary to increase the cutting area of ​​the canvas in actual operation, leaving more expectations, the production efficiency is not high, and the cost of manufacturing is increased.

[0005] The applicant also disclosed in the Chinese patent No. 200910249742.7 that the raw materials of the upper and lower rubber layers use two kinds of rubber materials with the same rubber formula system but different vulcanization speeds, and the vulcanization degree of the upper and lower rubber layers is difficult to achieve. To the same extent, there are more or less slight oversulfurization or undersulfurization in the upper and lower rubber layers

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