A kind of pvc-o pipe magnetic suction control radial stretching device and its processing method

Abstract

A PVC-O pipe magnetic suction control radial stretching device and a processing method thereof belong to the field of PVC-O pipe processing equipment. The device is characterized in that it includes: a processing cylinder (4), installed laterally on the workbench (1); a heating device, arranged inside the processing cylinder (4); a spreading mechanism (5), axially installed on the processing cylinder (4) Inside, stretch the PVC-O pipe body (7) radially; the compression mechanism (6) is set on the processing cylinder (4), and the inner end passes through the processing cylinder (4) and is close to the stretching mechanism (5). ‑O pipe body (7) radial positioning. The present invention is equipped with pipe body stretching and pipe body limiting devices at the same time. The PVC-O pipe body is set between the stretching mechanism and the compression mechanism, and the compression mechanism cooperates with the stretching mechanism to force it to follow the stretching mechanism. The stretching direction of the pipe is uniformly stretched and expanded, which effectively ensures the overall uniformity of the radial stretch of the pipe body and the use strength of the pipe.

Description

technical field [0001] A PVC-O pipe magnetic suction control radial stretching device and a processing method thereof belong to the field of PVC-O pipe processing equipment. Background technique [0002] Biaxially oriented polyvinyl chloride (PVC-O) is the latest evolution of PVC pipes. The pipes manufactured by special orientation processing technology are generally PVC-U pipes produced by extrusion method for axial stretching and radial stretching. Stretching, so that the PVC long-chain molecules in the pipe are regularly arranged in the biaxial direction, and a new type of PVC pipe with high strength, high toughness, high impact resistance, and fatigue resistance is obtained. The performance is far superior to that of ordinary PVC-U pipes. Research and development of PVC-O Pipes can greatly save raw material resources, reduce costs, improve product performance, and have obvious economic and social benefits. [0003] PVC is a non-crystalline, amorphous plastic. Since the ...

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Problems solved by technology

[0004] In the prior art, the axial stretching of PVC-O pipes is easy to realize, but there are certain technical problems in the realization of radial (that is, hoop) stretching. The expansion of the existing radial expansion device is due to the The defects of its own structure cannot guarantee the uniformity of the overall expansion of the pipe, so that the stretched pipe has uneven wall thickness and easy deformation of the pipe body, which seriously affects the service strength of the pipe.

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