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Sealing arrangement for pipe expanding machine

A technology of sealing device and tube expander, which is applied in the direction of engine sealing, mechanical equipment, engine components, etc., and can solve problems such as sealing ring cuts, sealing ring failure, and increased production costs

Inactive Publication Date: 2005-10-26
杜明干
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sealing device of the currently used hydraulic tube expander is as attached image 3 As shown, it includes a sealing head that can be inserted into the end of the pipe to be expanded 5 and a sealing ring 3 arranged in the ring groove of the sealing head. The outer diameter of the sealing ring must be greater than the inner diameter of the pipe to be expanded to ensure reliable expansion during the working process However, due to repeated expansion of the tube, the sealing head is inserted and withdrawn frequently, and the sealing ring is easily cut by the end of the pipe fitting, causing the sealing ring to fail, and the sealing ring has to be replaced frequently, which not only increases the production cost, but also reduces the production cost. efficiency

Method used

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  • Sealing arrangement for pipe expanding machine
  • Sealing arrangement for pipe expanding machine
  • Sealing arrangement for pipe expanding machine

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Embodiment Construction

[0010] Such as figure 1 As shown, the sealing device for the tube expander includes a sealing head that can be inserted into the end of the tube to be expanded 5 and a sealing ring 3 arranged in the ring groove of the sealing head. The sealing head is installed in the ring groove of the sealing ring 3, The side away from the free end of the sealing head is divided into two parts, which include the base of the sealing head 1, the bottom surface of the ring groove containing the sealing ring 3 and the extrusion part 2 of the sealing head on the other side, the extrusion part of the sealing head is used as the installation seal The bottom part of the ring groove extends through the base of the sealing head 1 and protrudes out of the base of the sealing head 1, the extruding part 2 of the sealing head can move relative to the base of the sealing head 1, and the outer diameter of the sealing ring 3 is smaller than the pipe to be expanded 5 The inner diameter of the sealing ring 3 ...

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Abstract

The invention discloses the sealing device for the tube expansion machine use. Because the outside diameter of the seal loop is smaller than the inside diameter of the tube waiting for expansion, so the seal loop cannot be easily cut by the ends of the tubes when the seal head is inserted into the tubes; when the seal head is inserted, pull the squeezing part of the head, and the surrounding slot formed by the seal head base and the extruding part becomes narrow to extrud the seal loop and to enlarge the outside diameter of the seal loop.

Description

technical field [0001] The invention relates to a sealing device, in particular to a sealing device for a tube expander. Background technique [0002] Composite radiators are now widely used. The basic structure of composite radiators is to closely combine two metal materials of different materials to ensure good heat transfer and heat conduction, and it is light in weight and has a long service life. . One method of tube expansion is to use the principle of hydraulic pressure to fill high-pressure water under the premise of sealing both ends of the tube to be expanded, and use high-pressure water to increase the size of the tube to be expanded so as to closely cooperate with the composite part, and the composite part processed by the hydraulic tube expander Fits securely. The sealing device of the currently used hydraulic tube expander is as attached image 3 As shown, it includes a sealing head that can be inserted into the end of the pipe to be expanded 5 and a sealing ...

Claims

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Application Information

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IPC IPC(8): F16J15/00
Inventor 杜明乾
Owner 杜明干
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