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Multi-stage welded bellows

A technology of welding bellows and inner bellows, which is applied in the field of bellows, can solve problems such as insufficient optimization of the overall design of the telescopic mechanism, increase in the number of bellows in the bellows, and excessive space for the telescopic shaft, so as to save layout space and improve sealing Reliability, compact effect

Active Publication Date: 2015-07-29
SHENYANG SIASUN ROBOT & AUTOMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the single-layer welded bellows is that there is only one layer of bellows. If you want to make the bellows achieve a high life, but at the same time you need to achieve a long-distance telescopic stroke
However, such a structure takes up too much space on the telescopic shaft, wastes cost, increases the number of wave plates in the bellows, reduces the sealing reliability, and the overall design of the telescopic mechanism is not optimized enough.

Method used

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  • Multi-stage welded bellows

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Embodiment Construction

[0021] see figure 1 , in one embodiment, a multi-stage welded bellows includes a first-stage welded bellows, a second-stage welded bellows, an upper flange 1, a middle flange 3, and a lower flange 5, and the first-stage welded bellows The pipe is welded between the upper flange 1 and the middle flange 3 , and the second-stage welded bellows is welded between the middle flange 3 and the lower flange 5 .

[0022] In this embodiment, the first-stage welded bellows is an inner bellows 2, the second-stage welded bellows is an outer bellows 4, and both the inner bellows 2 and the outer bellows 4 are circular Shaped pipe body, the diameter of the outer bellows 4 is greater than the diameter of the inner bellows 2, and the inner bellows 2 can be shrunk in the outer bellows 4.

[0023] Please also refer to image 3 , the upper flange 1 and the lower flange 5 are circular, and the middle flange 3 is in the shape of a basin. When the multi-stage welded bellows shrinks, the inner bello...

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Abstract

The invention discloses a multistage welded bellow which comprises a first-stage welded bellow, a second-stage welded bellow, an upper flange, a middle flange and a lower flange, wherein the first-stage welded bellow is welded between the upper flange and the middle flange; and the second-stage welded bellow is welded between the middle flange and the lower flange. The multistage welded bellow is compact in structure and large in extension ratio; the arrangement space of a sealed extension mechanism is saved; the overall structure is optimized; the cost is saved; and the sealing reliability of a direct-driven vacuum hand is improved.

Description

technical field [0001] The invention relates to a corrugated pipe, in particular to a multi-stage welded corrugated pipe with compact structure and large stretching ratio. Background technique [0002] The prior art of welded bellows is mainly single-stage welded bellows, which are applied to telescopic mechanisms with seals. In the structure of single-layer welded bellows, the bellows include: upper flange, welded bellows, and lower flange. Several welding wave plates are welded between the upper flange and the lower flange. When the telescopic mechanism moves up and down, the bellows moves accordingly to realize the mechanical seal. The disadvantage of the single-layer welded bellows is that there is only one layer of bellows, and it is necessary to achieve a long-distance telescopic stroke in order to achieve a high service life of the bellows. The required compression ratio of the bellows is small (that is, the ratio of the stretched length to the compressed length of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/52
Inventor 韩立志王金涛王凤利姜飞曲道奎徐方朱玉聪徐传胜
Owner SHENYANG SIASUN ROBOT & AUTOMATION