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Method and device for producing extrudate

A strand, product technology used in cable/conductor manufacturing, applications, household components, etc. to achieve high process speeds and reliable absorption

Pending Publication Date: 2019-08-02
LEONI KABEL GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has generally been found that due to the interception of the material during the molding process considerable pressure is exerted, whereby there is a risk of pressing the individual shaped halves apart from each other

Method used

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  • Method and device for producing extrudate
  • Method and device for producing extrudate
  • Method and device for producing extrudate

Examples

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Embodiment Construction

[0035] First, according to figure 1 The basic steps of the method for manufacturing strand-shaped article 2 by arresting material are explained. The figure shows in longitudinal section a strand-like article 2 extending in the longitudinal direction L, comprising an embedded core 4 and a sheath 6 applied to the core. The strand-shaped article 2 is here configured as a cable with a core, which is correspondingly a cable core and has, for example, one or more conductors, core wires, lines and / or sub-cables. Alternatively, the strand 2 is a hose and the core 4 is accordingly a hose core. In the embodiment shown here, the sheath 6 is in particular the outer sheath of the strand 2 . The strand-like product 2 can be constructed as a semi-finished product and still be processed further. To apply the sheath 6 , the core 4 is first fed in the conveying direction F to the extrusion unit 8 . By means of this extrusion unit, a predetermined material (usually plastic) is extruded onto ...

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Abstract

The invention relates to a method for producing an extrudate (2) with a casing (6), in which the casing (6) is extruded with a predetermined wall thickness by means of an extrusion unit (8), wherein,following the extrusion unit (8) in a feeding direction, a part of the still mouldable material is built up with the aid of a moulding unit (10, 12, 14) during a moulding process such that a moulded part (12) forms integrally on the casing (6), wherein the moulding unit (10, 12, 14) is moved according to the following working cycle - the moulding unit (10, 12, 14) is accelerated from a starting position in the feeding direction, - the moulding unit (10, 12, 14) is advanced in the direction of the extrudate (12, 2) and the moulded part (12) is formed, - the moulding unit (10, 12, 14) is withdrawn again from the extrudate (12, 2), - the moulding unit (10, 12, 14) is decelerated and moved from an end position, counter to the feeding direction, back in the direction of the starting position.

Description

technical field [0001] The present invention relates to methods and apparatus for the manufacture of strand articles. Background technique [0002] Elongated components produced by extrusion methods, in particular as continuous products, are referred to here as strands. Strands are understood here in particular to be (electrical) cables and hoses. In both cases, the strand-like article has an (outer) sheath, which is constructed by the extrusion method mentioned. [0003] Strand articles typically have a core to which a sheath is applied. In the case of a hose, the core has, for example, a hollow space. In the case of cables, the core is a cable core with at least one electrical line. Depending on the type of cable, the cable core has different structures. Formed parts such as plug housings, sleeves, seals or combinations thereof are often provided on the cable. [0004] Hoses are usually constructed in multiple layers, the outermost layer forming the jacket. Therefor...

Claims

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Application Information

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IPC IPC(8): B29C48/25B29C48/92B29C48/30B29C48/09B29C48/15B29C43/22B29C48/06
CPCB29C43/226H02G1/145H02G3/0462H01B13/24H01B7/184B29C48/92B29C48/06B29C48/09B29C48/13B29C48/0011B29C48/2528B29C48/303B29C2948/9258B29C48/154B29L2031/3462
Inventor 克里斯汀·恩斯特塞巴斯蒂安·戈斯安德烈亚斯·施赖伯约尔格·温泽尔
Owner LEONI KABEL GMBH
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