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Method and device for producing double-walled thermoplastic corrugated pipe having a connecting sleeve

A technology of double-wall pipe and joint pipe, applied in the field of bellows, can solve the problems of complex pressure matching and so on

Active Publication Date: 2013-08-14
UNICOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The adjustment of the different pressures acting simultaneously on the inner hose and the outer hose is also complicated there.

Method used

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  • Method and device for producing double-walled thermoplastic corrugated pipe having a connecting sleeve
  • Method and device for producing double-walled thermoplastic corrugated pipe having a connecting sleeve
  • Method and device for producing double-walled thermoplastic corrugated pipe having a connecting sleeve

Examples

Experimental program
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Effect test

Embodiment Construction

[0012] In the exemplary embodiment shown, the corrugator has forming jaws 1n, 1m. They are guided in pairs successively in the production direction X in a straight profile section 10 . Each pair of forming jaws encloses a substantially cylindrical forming cavity with its inwardly facing forming surfaces. The forming jaw pairs guided axially one behind the other in the forming section 10 form a forming channel consisting of cylindrical forming cavities which extend along the central central axis M shown in the figure.

[0013] In the starting region shown in the figures, the molding channel 10 projects into a nozzle arrangement 5 of an extruder, not shown. The nozzle arrangement 5 is oriented along a central center axis M. The corrugation forming machine is composed of its respective forming clamping dies 1n, 1m and nozzle device 5 symmetrical to the central axis M of the center. Only the right-hand plane of symmetry is shown in the figures, ie only the respective right-hand...

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PUM

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Abstract

The method involves carrying out extrusion of an outer tube (Sa) forming the outer pipe of the double-walled pipe and an inner tube (Si) forming the inner pipe of the double-walled pipe in a shaped channel (10). The outer tube is extruded into the sleeve shape surface to shape the sleeve section and is brought in contact with the sleeve shape surface. The inner tube is extruded into the outer tube that is already in contact. An independent claim is included for a device for producing an endless double-walled pipe having corrugated pipe sections and connecting sleeve sections.

Description

technical field [0001] The invention relates to a method and a device for producing a double-walled bellows, preferably made of thermoplastic, which includes pipe connections. Background technique [0002] Such a method and an associated device are known from EP0563575B1. The corrugated tube is a composite corrugated tube comprising a smooth inner tube and a corrugated outer tube which is welded to the inner tube in the region of its corrugations. The composite pipe has a joint part in which the outer pipe has a smooth cylindrical or slightly conical joint formation and the joint inner pipe also has a corresponding smooth cylindrical or slightly conical joint part, which rests against the inner side of the joint profile of the outer pipe and is welded there. The manufacture of the joint sleeve is carried out continuously by producing a double-walled continuous tube comprising successive bellows sections and joint formations. The continuous tube is cut to length in order t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C49/00B29C47/12B29C48/09B29C48/13B29C48/30B29C48/32
CPCB29C2791/006B29C47/0033B29C49/0021B29L2023/186B29C47/0023B29C49/783B29C47/126B29C48/09B29C48/13B29C48/21B29C48/303B29C49/0025B29C49/0029B29C2049/7834
Inventor H·科斯纳
Owner UNICOR