Manufacturing method of annular special-shaped rubber and plastic metal composite sealing element

Abstract

The invention relates to a manufacturing method of an annular special-shaped rubber and plastic metal composite sealing element. Machining and manufacturing of the sealing element relate to a composite process of metal and rubber materials, and in the prior art, the finished product requirement of the sealing element cannot be guaranteed for a vulcanization composite process of different materials of a special-shaped structure. The manufacturing method of the sealing element is involved and comprises the steps that a rubber material is mixed; a supporting block semi-finished product and a polytetrafluoroethylene film are prepared; vulcanization production of a supporting block is carried out; a metal energy absorption ring is subjected to sand blasting treatment; a sealing gasket semi-finished product is prepared; the metal energy absorption ring is coated with an adhesive, tackifying glue is prepared, and the supporting block is ground; a sealing gasket and the metal energy absorption ring are bonded and vulcanized; and the supporting block and the metal energy absorption ring are integrally bonded and vulcanized. According to the technical scheme, a multi-mold segmented heat vulcanization mode is adopted, the problem that different-shape metal parts and rubber parts of complex structures are difficult to firmly bond can be solved, and the overall adhesiveness of the energy absorption ring and the rubber material is effectively guaranteed through use of a tackifying layer during vulcanization.

Description

technical field [0001] The invention relates to the technical field of rubber seal manufacturing, in particular to a method for manufacturing an annular special-shaped rubber-plastic-metal composite seal. Background technique [0002] The ring-shaped rubber-plastic composite metal energy-absorbing ring used in the launching device is installed on the rear end face of the tail section of the projectile, which can provide fixed support for the projectile during the standby process and play the role of sealing and shock absorption. Such as Figure 1-3 As shown, the product is a rubber composite part, which is a closed ring structure as a whole, with an "L" shape in the edge section, including a metal energy-absorbing ring, a support block and a gasket. The metal energy-absorbing ring is wrapped on the outside of the rubber composite part. The metal energy-absorbing ring is made of rigid metal; there are four support blocks tightly bonded on the inner side of the side wall of th...

AI Technical Summary

Problems solved by technology

The dimensional accuracy of the product formed by this process is difficult to control, and the qualified rate of the product is low. The support block adopts a rubber sponge composite structure. During the standby process of the projectile, it is easy to cause wear and damage to the sponge layer of the support block and loss of resilience, thus affecting the normal use of the launch device.

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