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Inner wrapped spring-loaded oil seal mould and method for moulding inner wrapped spring-loaded oil seal by utilizing same

A mold forming and oil sealing technology, applied in applications, household components, household appliances, etc., can solve the problems of poor appearance quality and high rejection rate, and achieve the effects of low manufacturing cost, easy production, and prevention of spring deformation.

Inactive Publication Date: 2015-05-20
HARBIN DONGAN IND DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an inner spring oil seal mold and a method for forming an inner spring oil seal with the mold, so as to solve the problems of poor appearance quality and high scrap rate of the inner spring oil seal formed by the existing mold and method

Method used

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  • Inner wrapped spring-loaded oil seal mould and method for moulding inner wrapped spring-loaded oil seal by utilizing same
  • Inner wrapped spring-loaded oil seal mould and method for moulding inner wrapped spring-loaded oil seal by utilizing same

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Experimental program
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Effect test

specific Embodiment approach 1

[0023] Specific implementation mode one: as figure 1 and figure 2 As shown, the inner spring oil seal mold, the inner spring oil seal mold includes an upper mold and a lower mold, and the upper mold includes an upper mold part 1, a mold core part 2, a circlip I7, a circlip II8 and a mold frame plate I4 ; The lower mold includes the lower mold part 3, the circlip III6 and the mold frame plate III5;

[0024] The upper mold 1 and the lower mold 3 are set up and down oppositely, one end of the clamp spring I7 is connected with the formwork plate I4, and the other end is connected with the upper mold 1; one end of the clamp spring II8 is connected with the mold core 2, and the other end is connected to the upper mold part 1; the mold core part 2 is arranged in the center cavity of the upper mold part 1, and the outer peripheral side wall of the mold core part 2 is provided with an upper platform 2-1, and the upper mold part 1 A lower platform 1-1 is provided on the inner periphe...

specific Embodiment approach 2

[0025] Specific implementation mode two: as figure 1 and figure 2 As shown, in the inner spring oil seal mold described in Embodiment 1, the groove depth of the annular groove is 1 / 2 of the outer diameter of the spring 11 . With such arrangement, the spring 11 can be stabilized in the annular groove, thereby effectively preventing the deformation of the spring 11 during the flow of the rubber material 12 and ensuring smooth molding of the product.

specific Embodiment approach 3

[0026] Specific implementation mode three: as figure 1 and figure 2 As shown, in the inner spring oil seal mold described in Embodiment 1, the groove depth of the annular groove is 1 / 3 of the outer diameter of the spring 11 . In this way, the spring 11 is arranged in the annular groove, thereby effectively preventing the deformation of the spring 11 during the flow of the rubber material 12 and ensuring smooth molding of the product.

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Abstract

The invention relates to an inner wrapped spring-loaded oil seal mould and a method for moulding an inner wrapped spring-loaded oil seal by utilizing the inner wrapped spring-loaded oil seal mould, aiming at solving the problem that rejection rate is high during moulding of the inner wrapped spring-loaded oil seal in the prior art. A mould core part is arranged in an upper mould part, a lower cavity is arranged at the lower part, close to the outer end, of the more core part, a step-shaped upper cavity I and a step-shaped upper cavity II are arranged on the surface of a lower mould part, the adjacent side walls of the step-shaped upper cavity I and the step-shaped upper cavity II are step-shaped side walls, and the step-shaped side walls are used for placing a skeleton; an annular groove used for containing a spring is formed in the root part of the adjacent side walls of the step-shaped upper cavity II and the step-shaped upper cavity I, the depth of the annular groove is 1 / 3-1 / 3 of the outer diameter of the spring, and after the mould is assembled, an exhaust passage is formed between the lower mould part and the mould core part. The method for moulding the inner wrapped spring-loaded oil seal by utilizing the inner wrapped spring-loaded oil seal mould comprises the following steps: preheating the inner wrapped spring-loaded oil seal mould, arranging the skeleton on the step-shaped side wall of the lower mould part, putting the spring into the annular groove in the lower mould part, carrying out vulcanization moulding, opening the mould, and demoulding. The inner wrapped spring-loaded oil seal mould provided by the invention is used for moulding the inner wrapped spring-loaded oil seal.

Description

technical field [0001] The invention relates to an oil seal mold and a method for forming an oil seal by using the mold. Background technique [0002] The inner spring oil seal mold used in the past is limited by the structure, and has the following defects in use: 1. The spring positioning structure is not enough to resist the erosion of the rubber material due to the unreasonable design. 2. The mold has no exhaust channel, and the rubber material flows from top to bottom after the mold is closed, causing gas backflow, which will accelerate the progress of spring deformation and stringing, and the product (inner spring oil seal) is difficult to form , The reject rate of the product in the molding process is as high as 30%. [0003] In addition, the inner spring oil seal formed by using the existing inner spring oil seal mold and method, due to the unreasonable structure of the mold and the set process parameters (such as temperature, pressure, etc.), resulting in flashing ...

Claims

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Application Information

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IPC IPC(8): B29C33/00B29C35/02B29L31/26
Inventor 田伟波周朝强黄刚韩宇建
Owner HARBIN DONGAN IND DEV