Production process of rubber diaphragm of automobile brake chamber

Abstract

The invention discloses a production process of a rubber diaphragm of an automobile brake chamber. The production process concretely comprises the following steps of: preparing materials; placing a lower-layer rubber brick into a lower model cavity, covering canvas and positioning the canvas by using a compression ring; closing a first upper die, and partially vulcanizing the lower-layer rubber brick; placing an upper-layer rubber brick on the canvas in the lower model cavity; closing a second upper die, and integrally vulcanizing an upper rubber layer and a lower rubber layer of the diaphragm; and taking the product out, and trimming the product to obtain a finished product. The upper-layer rubber brick and the lower-layer rubber brick are respectively made of rubber materials with same formula system and different vulcanization speeds; the time T for sufficient vulcanization of the lower-layer rubber materials is equal to the sum of the time for partial vulcanization and the time for integral vulcanization; and the time for the integral vulcanization is the time for sufficient vulcanization of the upper-layer rubber material. The invention effectively solves the problem of over vulcanization of the lower-layer rubber of the diaphragm in the production process and overcomes the defect that aging occurs in the lower-layer rubber anterior to the upper-layer rubber to result in scrapping of the diaphragm, thereby prolonging the service life of the diaphragm.

Description

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AI Technical Summary

Benefits of technology

This technology uses an abrasive tool called LASER CUT (Laser Shear) to make small holes on fabrics like tires or vinyl flooring without damaging them permanently. By using this method instead of traditional methods such as sand blasting, it simplifies the manufacturing processes while reducing workload levels and increasing production rates. Additionally, these new techniques can improve adhesion between the rubbers themselves, prevent cracks from forming at certain points along their edges, reduce stress concentration, increase durability, etc., resulting in longer lifespan of the products being produced.

Problems solved by technology

This patents describes different technical solutions used when producing an elastomeric component called a tire's air chamber damper diaphrame. These include use of specific materials like silicon dioxide, sulfur cured nitrogen gas resin, polyamides, acrylic acid esters, epoxy polymers, etc., along with other factors such as temperature and humidity levels. However, these techniques have limitations due to their own characteristics including poor performance at higher temperatures compared to traditional methods involving heat press curing processes. Additionally, they require expensive tools and long lead time periods before being able to produce products with consistently good properties.

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