Method and welding machine for welding pipe by using ultra-high molecular weight polyethylene membrane belt through hot melting

Abstract

The invention provides a method and a welding machine for welding a pipe by using an ultra-high molecular weight polyethylene membrane belt through hot melting. The method comprises the following steps of: (1) grinding the joint of a pipe to be connected or a common pipe to form an inclined surface; (2) aligning the joints of two pipes to each other and then flatly filling a V-shaped groove with a solder wire; (3) enabling the surface of the weld joint and the outer surfaces of the pipes to be in the same plane through an angle grinder; (4) covering the periphery of the pipe by using a welding machine; (5) towing one end of a single-sided membrane welding belt to the pipe weld joint so that the end of the membrane welding belt is held down by a roller; (6) starting a heat gun on the welding machine; and (7) rotating the welding machine so that the welding machine rotates along the peripheral joint of the pipe. The welding machine comprises a support, wherein the membrane welding belt made of ultra-high molecular weight polyethylene is arranged on the support; one end of the membrane welding belt is attached to the weld joint through a special-shaped holder; and the heat gun is fixed at one end of the special-shaped holder. The method provided by the invention is capable of quickly and firmly welding the joint of the ultra-high molecular weight polyethylene membrane pipe with the joint of the common polyethylene pipe.

Description

technical field [0001] The invention relates to an ultra-high molecular weight polyethylene diaphragm pipe joint welding method and a common polyethylene pipe joint welding method and a hot-melt welding machine. Background technique [0002] Because the ultra-high molecular weight polyethylene film developed by the applicant has extremely high strength, and has many advantages such as high elastic modulus, good high temperature resistance and corrosion resistance, it has a wide range of application values. The ultra-high molecular weight polyethylene diaphragm can be spirally wound, heated and pressed to make pipes. Under the same pressure conditions, its wall thickness can be reduced to about 1 / 5-1 / 3 of that of PE100 pipes, which greatly reduces production costs. But, because the welding method of the pipe material that this UHMWPE film is made cannot adopt any welding machine in the prior art, simultaneously because the connection of plastic pipe material such as polyethy...

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Problems solved by technology

But, because the welding method of the pipe material that this UHMWPE film is made cannot adopt any welding machine in the prior art, simultaneously because the connection of plastic pipe material such as polyethylene is always one of the bottlenecks that affects the use of plastic pipes Therefore, how to quickly and firmly weld UHMWPE membrane pipe joints and ordinary polyethylene pipe joints under the premise of ensuring quality is one of the important topics to be studied by those skilled in the art

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