Manufacturing method and equipment for breaking joints of sealing ring

Abstract

The invention discloses a manufacturing method and equipment for breaking joints of a sealing ring. The manufacturing equipment comprises a forming die, wherein the forming die comprises a lower die and an upper die; the lower die comprises a lower die seat, a lower die locating seat and a locating seat, the locating seat comprises a connecting portion, a limiting portion and a locating portion which are sequentially connected upwards, the connecting portion, the limiting portion and the locating portion gradually decrease in cross section, and a first elastic member is arranged between the bottom of the connecting portion and the lower die seat. The upper die comprises an upper die seat, an upper die fixing plate, a prepressing plate, a second elastic member and a cutting knife assembly; the cutting knife assembly is fixedly arranged on the upper die fixing plate and corresponds to the position of a yielding gap, the lower end of the cutting knife assembly is provided with a knife edge, and the thickness of the knife edge is 0.1-0.2mm; an accommodating groove which is in positional correspondence to the locating seat is formed in the bottom of the prepressing plate, and the accommodating groove is 0.2-0.5mm higher than the sealing ring. According to the manufacturing method, the forming die is used for forming the breaking joints. According to the method and the equipment, the breaking joints with small clearance and high accuracy can be formed on the sealing ring.

Description

technical field [0001] The invention relates to a manufacturing device and a manufacturing method for sealing ring fractures. Background technique [0002] The choice of sealing ring material is of great significance to its sealing performance and service life. The performance of the material directly affects the performance of the sealing ring. Sealing rings generally need to have the following properties. [0003] (1) High elasticity and resilience. [0004] (2) It has appropriate mechanical strength, including expansion strength, elongation and tear strength, etc. [0005] (3) The performance is stable, not easy to swell in the medium, and the heat shrinkage effect is small. [0006] (4) Easy to process and shape, and can maintain precise dimensions. [0007] (5) Do not corrode the contact surface, do not pollute the medium, etc. [0008] Sealing rings generally include O-rings, U-rings, V-rings, rectangular sealing rings, and Y-rings. [0009] For some rectangular...

AI Technical Summary

Problems solved by technology

At present, the broken seam is formed on the sealing ring, and the gap of the broken seam is large. When the broken seam is formed, the diameter of the sealing ring will become smaller and cannot be used normally. Even if it can be used, the gap of the broken seam is large, so the sealing performance is poor. , In addition, the existing fracture accuracy is low, such as the phenomenon that the position of the fracture occurs, and the axis of the fracture and the sealing ring has an included angle

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