Composite double-lip oil seal

Abstract

The invention relates to a composite double-lip oil seal. The composite double-lip oil seal is formed by sleeving an external oil seal structure and an internal oil seal structure, wherein the external oil seal structure is formed by performing vulcanization-molding on an external metal framework and a rubber body through a die, after shaping, a lip port with a spring and an inclined boss are generated, and the exposed metal framework at the middle lower part of inside of the external oil seal structure is used as an internal matching surface to be in sleeved match with the internal oil seal structure; and the internal oil seal structure is formed by performing vulcanization-molding on an internal metal framework and a rubber body through a die, after shaping, a lip port without a spring and an auxiliary lip structure are generated, the lower part of the internal metal framework is an exposed structure, the outside of the internal metal framework is used as an external matching surface to be in sleeved match with the internal matching surface of the external oil seal structure, a positioning flange is arranged at the lower end of the exposed metal frame, and the upper inside of the internal metal framework is an exposed structure and is used as a guiding surface to be in clearance fit with a work shaft. The composite double-lip oil seal has two lip ports with different structures, can simultaneously satisfy sealing requirements of rotation movement and reciprocating movement, and has self-protection function; and the composite double-lip oil seal is long in service life, and can increase sealing performance and satisfy the sealing requirements of uniaxial multimode movement.

Description

technical field [0001] The invention relates to a double-lip structure oil seal, in particular to a composite double-lip oil seal. Background technique [0002] Traditional oil seals generally have a single-lip structure. With the rapid development of science and technology, some high-end technical requirements are also increasing. The structure and performance of each product are constantly evolving and improving. The functions of machinery and equipment are also gradually improving. Some equipment In order to fulfill a certain function, the working shaft needs to carry out rotary and reciprocating multitasking movements at the same time. Although the traditional single-lip oil seal structure can achieve assembly and sealing, it is often unsatisfactory in actual use, and the sealing performance is poor. , easy wear and tear, short life and other shortcomings still need to be improved. Contents of the invention [0003] In order to solve the above technical problems, the ...

AI Technical Summary

Problems solved by technology

[0002] Traditional oil seals generally have a single-lip structure. With the rapid development of science and technology, some high-end technical requirements are also increasing. The structure and performance of each product are constantly evolving and improving. The functions of machinery and equipment are also gradually improving. Some equipment In order to fulfill a certain function, the working shaft needs to carry out rotary and reciprocating multitasking movements at the same time. Although the traditional single-lip oil seal structure can achieve assembly and sealing, it is often unsatisfactory in actual use, and the sealing performance is poor. , easy to wear, short life and other shortcomings still need to be improved

Images