Spiral mold and pipeline composite equipment with spiral mold

Abstract

The invention relates to the field of composite pipeline manufacturing equipment, and discloses a spiral mold and pipeline composite equipment with the spiral mold. The spiral mold comprises a spiral mold assembly (20) provided with a plurality of spiral flow channels (21) and a flow dividing assembly (30) at least comprising a first flow dividing ring (31), the flow dividing assembly (30) is arranged at the feeding end of the spiral mold assembly (20), the first flow dividing ring (31) is provided with a first arc-shaped flow channel (311) extending in the circumferential direction and first material passing holes (312) penetrating and extending from the two ends of the first arc-shaped flow channel (311) in the axial direction, and the first flow dividing ring (31) can divide and convey material flow to the multiple corresponding spiral flow channels (21) through the first material passing holes (312). According to the spiral mold, feeding pressure can be converted into axial pressure when the material flow enters the spiral mold assembly, meanwhile, uniform distribution of composite materials in the circumferential direction is achieved, radial deviation of the spiral flow channels can be effectively avoided, and a composite layer with the uniform wall thickness is extruded.

Description

technical field [0001] The invention relates to composite pipeline manufacturing equipment, in particular to a spiral mold. On this basis, the present invention also relates to a pipe compounding device with the screw mold. Background technique [0002] In the manufacture of composite pipes, it is usually necessary to compound molten plastic on the outer peripheral surface of the pipe through a plastic extrusion die to form a plastic outer layer. For example, in the manufacturing process of steel mesh reinforced composite plastic pipe, a spiral mold can be used to form a PE outer layer on the outer peripheral surface of the pipe to be composited. Among them, since the pipes to be compounded need to run forward along the central axis of the spiral mold during the compounding process, the composite material is usually fed in by side feeding. [0003] Such as figure 1 Shown is a schematic cross-sectional structure diagram of a typical spiral mold, wherein molten plastic can ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problem that the spiral die existing in the prior art is difficult to ensure the uniformity of the wall thickness of the composite layer, and to provide a spiral die that can effectively reduce the impact of the pressure on the feed end on the wall thickness of the extruded composite layer. uniformity effect

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