Automatic supporting frame

Abstract

The invention discloses an automatic supporting frame. The automatic supporting frame is characterized by comprising supporting frames, wherein two supporting frames are oppositely arranged at the end of one side at the same time, and the other supporting frames are arranged in a line; two adjacent supporting frames are fixedly connected with each other through a connecting pipe; two cross bars in each group are respectively and correspondingly arranged at the two ends of the supporting rods which are uniformly distributed along the periphery of the supporting frame and are hinged to the two ends of the supporting rods; rolling parts are uniformly distributed and fixedly connected with the a cross bar between the two adjacent supporting frames. During a using process, the automatic supporting frame disclosed by the invention is arranged between an extruding machine and a tractor; the supporting frame on the outer side of one end of the automatic supporting frame is fixedly connected with an air cylinder body; the supporting frame on the inner side is fixedly connected with a piston rod; the other end of the supporting frame on the inner side is fixedly connected with the extruding machine; when a plastic pipe which is just extruded by the extruding machine passes through the automatic supporting frame, the piston rod extends out so that the supporting rods of the automatic supporting frame disclosed by the invention swing centripetally to drive the supporting circle of the supporting frame to decrease; after a connecting plate passes through the automatic supporting frame disclosed by the invention, the piston rod retracts to drive the supporting circle of the supporting frame to increase, so that the plastic pipe is supported in real time; the ovality of the plastic pipe is ensured to meet process stipulation.

Description

technical field [0001] The invention relates to the field of pipelines, which is an automatic support for extruding and processing large-diameter thin-walled plastic pipes by an extruder, and is used for lining plastic pipes or externally coating heat-insulating plastic pipes in steel-plastic composite pipes or steel-plastic composite heat-preservation pipes Production. Background technique [0002] Pipeline transportation is a long-distance transport method of transporting liquid and gas materials using pipelines as a means of transportation. Transportation has the advantages of less energy consumption, low cost and good benefits. The pipe is the main component of the pipeline. The composite pipe is a new generation of chemical building material pipeline, especially the steel-plastic composite pipe. Compared with the traditional steel-plastic composite pipe or plastic pipe, it has the high strength, tensile strength and low The expansion coefficient has the advantages of ...

AI Technical Summary

Problems solved by technology

As the caliber of the steel-plastic composite pipe or the steel-plastic composite thermal insulation pipe becomes larger, the caliber of the plastic pipe with inner lining or external insulation also increases, but the wall thickness of the plastic pipe with inner lining or external insulation increases. Not too big, after the extruder is extruded and shaped, because the inner lining or outer coating insulation plastic pipe is round and thin, and the ellipse is too large, when it enters the tractor, the rack of the tractor cannot drive the inner lining or outer coating with excessive ellipse Insulated plastic pipe

There is also a method of using an extruder to extrude the plastic pipe and tie the mouth of the pipe to death, and then inflate the pipe to make the plastic pipe bulge. Each piece is tied tightly and cut off, which will waste a lot of raw materials, manpower and time.

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