A continuous dense wave forming method for bellows

Abstract

The invention discloses a continuous dense wave forming method for bellows. The method comprises the following steps: conveying a stainless steel strip to a soldering station for welding seams to obtain a stainless steel tube; drawing the stainless steel tube and extending into a bellows forming machine; generating a wave squeezing force on the stainless steel tube by the bellows forming machine to obtain a bellows; allowing the bellows to extend into a dense wave forming machine and pass through a dense wave segment conduit and then extend into a dense wave tube clamp, controlling a cylinderby a controller so that the dense wave tube clamp is clamped or released; when the dense wave tube clamp is clamped, the bellows forming a dense wave tube under the action of the wave squeezing force,and when the dense wave tube clamp is released, the dense wave tube moving to the dense wave tube clamp under the action of the wave squeezing force; after penetrating through an anti-jump conduit, the dense wave bellows being coiled by an automatic coiling machine to obtain a continuous bellows. The continuous dense wave forming method for bellow disclosed by the invention has the following advantages and effects that by using the dense wave tube forming machine and the dense wave tube clamp, the bellows is continuously densely waved to obtain the long-length coil-shaped dense wave tube, which is convenient for transportation, and can be cut to an appropriate length according to actual needs.

Description

technical field [0001] The invention relates to the technical field of dense wave forming, in particular to a continuous dense wave forming method for corrugated pipes. Background technique [0002] The bellows is a telescopic tubular elastic sensitive element that can be connected along the folding direction. Bellows are widely used in instruments and meters, and their main purpose is as a measuring element of a pressure measuring instrument to convert pressure into displacement or force. The bellows has a thinner wall and higher sensitivity. The measuring range is tens of Pa to tens of MPa. The open end is fixed, and the sealed end is in a free state, and the auxiliary coil spring or reed is used to increase the elasticity. The corrugated pipe is rolled into a cylindrical shape by a stainless steel strip, and then extruded by a corrugated forming machine. After the corrugated pipe is extruded again, it can be made into a dense corrugated pipe. The wave pitch of the dense ...

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Problems solved by technology

[0003] However, in the prior art, there are the following disadvantages: the length of the fixed shaft of the dense wave forming equipment is limited, and the dense wave tube is sleeved on the fixed shaft of a certain length and squeezed by the dense wave tube forming machine to obtain a shorter dense wave tube. Realize continuous dense wave, so it is impossible to get a longer dense wave tube, the length of the dense wave tube is limited in use, and the shorter dense wave tube is more dispersed during transportation, there is a problem of inconvenient transportation

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