Ultra-high molecular weight polyethylene pipe forming system and process

Abstract

The invention discloses an ultra-high molecular weight polyethylene pipe forming system and process, and belongs to the technical field of ultra-high molecular weight polyethylene pipe forming. The ultra-high molecular weight polyethylene pipe forming system comprises a base, a hopper base, a machine barrel, a feeding shaft, a shaping core rod, a shaping sleeve and a cooling sleeve, the hopper base is fixedly connected to the left side of the top of the base, and a feeding cavity is formed in the hopper base. The machine barrel fixedly communicates with the right side of the hopper base and communicates with the feeding cavity. According to the ultra-high molecular weight polyethylene pipe forming system and process, materials flowing out of an injection pipe are stirred, so that the materials loosen and fall into a conveying cavity of a first spiral conveying blade, in the exhaust process, when a first piston moves to not seal an air injection pipe, continuously exhausted air can be injected into an annular spray head to vibrate the materials accumulated below, the conveying cavity of the first spiral conveying blade is filled with the materials as much as possible, a second spiral conveying blade can convey the filled materials into the shaping sleeve, a gap between the whole shaping sleeve and the shaping core rod is filled, and the machining quality of formed pipes is guaranteed.

Description

technical field [0001] The invention relates to the technical field of ultra-high molecular weight polyethylene pipe forming, in particular to an ultra-high molecular weight polyethylene pipe forming system and a forming process. Background technique [0002] The prior art discloses some invention patents for ultra-high molecular weight polyethylene pipe molding. The Chinese patent application number is 200710053227.2, which discloses a single-screw extrusion barrel molding method and molding method for ultra-high molecular weight polyethylene (UHMWPE) pipes. The equipment utilizes the extrudable and calendering properties of ultra-high molecular weight polyethylene in a high elastic state. When the ultra-high molecular weight polyethylene in a high elastic state is under the action of a certain extrusion force, it is filled with When the cavity is formed, the preliminary molding of the ultra-high molecular weight polyethylene pipe is realized. Under the continuous action of...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a UHMWPE pipe molding system and molding process, to solve the above-mentioned background technology. In the actual transportation process, it is easy to cause the cavity to be unable to be filled due to the agglomeration of raw materials, resulting in a large space between the conveyed materials, resulting in insufficient material conveyed to the forming area, and resulting in a forming gap between the sizing sleeve and the sizing mandrel. Can not be fully filled, resulting in defects in the pipe forming body, thereby reducing the quality of the pipe forming

[0008] When working, in the prior art, during the process of screw conveying and forming the forming raw materials of pipes, the conveying cavity on the spiral blade is likely to be unable to fill the cavity due to the agglomeration of raw materials during the actual transportation process, resulting in a large gap between the conveyed materials. Due to the large space, the material transported to the forming area is not sufficient, and the forming gap between the shaping sleeve and the shaping mandrel cannot be completely filled, resulting in defects in the formed body of the pipe fittings, thereby reducing the quality of the pipe fittings. This technical solution solves the problem. The above problems, the specific working principle is as follows, the raw materials are put into the injection hopper, and the first motor drives the conveying shaft to rotate, so that the conveying shaft drives the second screw conveying blade to rotate and at the same time conveys the raw materials into the injection pipe, so that the raw materials pass through the injection pipe in turn. After the pipe and the injection chamber enter the feeding chamber, the conveying chamber on the first screw conveying leaf is filled. During the rotation of the conveying shaft, the swing plate drives the support sleeve to reciprocate up and down through the connecting rod, and the support sleeve drives the first piston. The rod and the first piston reciprocate up and down. When the support sleeve moves down, the conveying shaft will drive the swing plate to swing down, so that it first inhales and then exhausts. During the exhaust process, it will push the second piston to move to the left. , and absorb the gas in the second piston tube through the suction pipe, so that the third piston moves to the left, driving the second piston rod and the L-shaped push plate to move to the left, canceling the effect on the push plate, and the second piston will push the threaded rod Moving to the left, the threaded rod will rotate under the action of the threaded sleeve, and the threaded rod will drive the moving blade to move and rotate to stir the material flowing out of the injection pipe, so that the raw

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