Exhaust equipment for full-coating of polyethylene spirally enwound structure-wall pipe

Abstract

The invention discloses exhaust equipment for full-coating of polyethylene spirally enwound structure-wall pipe. The exhaust equipment comprises a full-coating machine head, one end of the full-coating machine head is provided with a pipeline inlet, and the other end of the full-coating machine head is provided with a pipeline outlet; and a first sealing sleeve is arranged on the pipeline inlet side, and a second sealing sleeve is arranged on the pipeline outlet side. According to the exhaust equipment, the first sealing sleeve and the second sealing sleeve are used for sealing the equipment,a vacuum pump is used for vacuumizing in the pipe machining process so that the effect that the quality and the appearance of a pipe are influenced because bubbles are generated in the process of winding a flat pipe can be avoided, and the high-quality pipe can be produced; the pipe with the flat pipe wound is shaped through a shaping device, the pipe with the flat pipe wound is shaped and rolled,the surface of the pipe with the flat pipe wound is pressed to be a smooth surface, the appearance is attractive, and the bubbles can be conveniently and quickly discharged; and the pipe subjected toshaping undergoes bubble pressing and shaping again through a bubble pressing device, the structure is simple, the production processes of pipe exhausting and winding are completed, and the high-quality large-caliber polyethylene spirally enwound structure-wall pipe can be produced.

Description

technical field [0001] The invention relates to the field of polyethylene winding structure wall pipe processing, in particular to a polyethylene winding structure wall pipe fully covered exhaust device. Background technique [0002] At present, the PP pipe full covering process of large-diameter skeleton pipe high-density polyethylene winding structure wall pipe production equipment has improved the status quo of the seam of the covering tape in the form of the half-covered head, and improved the PP pipe torsion during the winding process. The exposed defect of the bare pipe caused by the seam offset of the covering tape improves the process quality and appearance effect of the pipe product. However, in the actual production process, when the PP pipe enters the coating core film, part of the air will be brought in, so that after the fully covered PP pipe is formed, in the process of handing over the flat belt, the air brought in will be Accumulated by extrusion, resulting ...

AI Technical Summary

Problems solved by technology

However, in the actual production process, when the PP pipe enters the coating core film, part of the air will be brought in, so that after the fully covered PP pipe is formed, the air brought in will be absorbed during the transfer process with the flat belt. Accumulated by extrusion, resulting in irregular air bubbles, which will affect product appearance and product quality

Images