A plastic pipe bending process

Abstract

The invention discloses a plastic pipe bending process, which belongs to the technical field of plastic pipe processing. The invention is provided with an energy-saving anti-stretch pipe group used in conjunction with the process. By setting the energy-saving anti-stretch pipe group, not only can significantly reduce hot sand It can reduce the waste of heat, improve energy-saving and environmental protection performance, and can effectively prevent the heat-softened PVC pipe from being stretched and deformed during the moving process. The filling body will also be softened by heat, so that when the heat-softened PVC pipe is bent, the hot sand can push the movable heat insulation block to offset the extrusion from the PVC pipe, thereby preventing the heat between the hot sand and the PVC pipe. The mutual extrusion between the PVC pipes will cause the deformation of the PVC pipe, which can effectively improve the working quality of the bending process, and the hot soft filler can be cooled and hardened in the original state after the bending is completed, so that the energy-saving anti-stretch pipe group can be reused. Thereby, the practicability is greatly improved.

Description

technical field [0001] The invention relates to the technical field of plastic pipe processing, and more specifically, relates to a plastic pipe bending process. Background technique [0002] Plastic pipes are generally made of synthetic resin, that is, polyester, added with stabilizers, lubricants, plasticizers, etc., and extruded in a pipe making machine by a "plastic" method. It is mainly used for water supply system piping, drainage, exhaust and sewage sanitary pipes, underground drainage pipe systems, rainwater pipes, and threading pipes for wire installation in housing construction. [0003] PVC pipe is a kind of plastic pipe, and it is also a synthetic material widely used in the world today. Its main component is polyvinyl chloride. In some usage scenarios, the PVC pipe needs to be bent, that is, the PVC pipe needs to be bent. Pour a large amount of high-temperature hot sand into the PVC pipe to soften the entire PVC pipe, and then put the softened PVC pipe into a ...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned process of bending PVC pipes with hot sand has the following advantages: the hot sand can heat the PVC pipe evenly, and the filling of the hot sand can make the bending of the pipe difficult to deform, but it also has the following disadvantages: first, For some PVC pipes that only need to be bent at a certain part in the middle, pouring a large amount of hot sand to soften the entire pipe will cause waste of heat, especially for long PVC pipes. Secondly, after the pipe is softened, put it into During the mold, the pipe is easily stretched and deformed, which needs to be improved

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