Device for manufacturing double-flat-wall helical hollow wall pipe

A technology of structural wall pipe and double flat wall, applied in the field of plastic pipe extrusion, can solve the problems of complex process, decreased axial flexibility and ring stiffness, decreased impact resistance, etc., and achieves high production efficiency, low production cost, light weight effect

Inactive Publication Date: 2014-02-12
NINGBO KANGRUN MACHINERY TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some structural wall tubes have good ring stiffness and axial flexibility, but most of them are produced by winding method, and the process is more complicated
The axial hollow area (axial porous) structure of some structural wall tubes improves its axial rigidity, and can be produced on a standard extrusion production line wi

Method used

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  • Device for manufacturing double-flat-wall helical hollow wall pipe
  • Device for manufacturing double-flat-wall helical hollow wall pipe
  • Device for manufacturing double-flat-wall helical hollow wall pipe

Examples

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[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0027] Such as figure 1 — figure 2 Shown is a double-flat-walled spiral hollow structure wall tube, which is composed of an inner wall 1 with a smooth inner surface, an outer wall 2 with a smooth outer surface, and an inner hole 3 located between the inner wall 1 and the outer wall 2. The hole wall 4 between the inner holes 3 constitutes a rib between the inner wall 1 and the outer wall 2. The inner hole 3 is a spiral hole that runs th...

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Abstract

The invention discloses a device for manufacturing a double-flat-wall helical hollow wall pipe. The device comprises an extrusion machine and a machine head connected with the extrusion machine, wherein the machine head is connected with a vacuum water inlet groove, a spraying cooling groove, a multi-crawler tractor, a cutting saw and a pipe turning frame in sequence in a processing direction of a production line and is in a hollow structure; the hollow part forms a flow channel; the machine head comprises a machine head body, a die head and a machine neck connected with the extrusion machine; a flow distribution cone is arranged in the machine head body; a cone head of the flow distribution cone faces to the extrusion machine; a core rod is arranged at an outlet of the die head; hollow core shafts with the number the same as that of helical holes are arranged between the core rod and the flow distribution cone; a drive mechanism for driving the core rod to rotate is arranged on the machine head body. The device has the advantages that the structured wall pipe produced by the production line is good in comprehensive mechanical performances such as impact resistance, ring stiffness and axial flexibility, is excellent in process performance, and can be suitable for wide-range large-area popularization and application.

Description

technical field [0001] The invention relates to the technical field of extrusion of plastic pipes, in particular to a manufacturing device for double-flat-wall spiral hollow wall pipes. Background technique [0002] Existing large-diameter plastic pipes for sewage or rainwater are buried pipes. Due to the need to withstand external pressure, the pipe needs to be designed as a structural wall pipe with increased ring stiffness. The existing structural wall pipes at home and abroad include double-wall corrugated pipes, UPVC ribbed pipes, and axial hollow grid pipes formed by one-time extrusion; there are large-diameter winding pipes formed by secondary extrusion and other types of winding pipes. The best-selling products on the market are double-wall corrugated pipes and their manufacturing equipment. Because the double-wall bellows uses less material when the ring stiffness is the same, but the manufacturing equipment of this product is expensive, which is not conducive to ...

Claims

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Application Information

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IPC IPC(8): B29C47/24B29C47/70B29C47/68B29C47/00B29C48/33
CPCB29C48/252B29C48/30B29C48/33B29C48/693B29C48/705
Inventor 徐新
Owner NINGBO KANGRUN MACHINERY TECH
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