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Method for producing coaxial cable having thin-walled, radially closed outer conductor

A technology for coaxial cables and outer conductors, which is used in the manufacture of coaxial cables, insulating conductors/cables, and forming corrugations on conductors/cables, and can solve problems such as reducing wall thickness and drawing processes

Pending Publication Date: 2022-05-17
NEXANS
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  • Claims
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AI Technical Summary

Problems solved by technology

Since in the case of continuous production of long coaxial cables, the inner conductor and the insulator have to be introduced into the flat strip made of non-ferrous metal and formed as a slotted hollow profile already before welding, it cannot be used after welding Drawing process for reducing wall thickness

Method used

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  • Method for producing coaxial cable having thin-walled, radially closed outer conductor
  • Method for producing coaxial cable having thin-walled, radially closed outer conductor
  • Method for producing coaxial cable having thin-walled, radially closed outer conductor

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Embodiment Construction

[0045] figure 1 The steps of a method 100 for producing a coaxial cable with a thin-walled, radially closed outer conductor are shown in accordance with one aspect of the present invention. In step 102 of the method, a flat strip made of a non-ferrous metal is supplied to a forming apparatus at a first supply speed. For example, flat copper strip is unwound from a reel. In the forming device, in step 108, the supplied flat strip is shaped into the form corresponding to the desired hollow profile of the outer conductor. For example, shaping can be achieved by means of roll forming tools.

[0046] During shaping, before the hollow profile forming the outer conductor is completely closed, the cable core is supplied comprising the inner conductor sheathed by dielectric and further layers, if appropriate. For example, a cable core has already been supplied in step 107 immediately before the first forming stage.

[0047] Before shaping, an optional step 104 may be performed in th...

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Abstract

A method for continuously producing a coaxial cable (224) having a thin-walled, radially closed non-ferrous metal outer conductor includes supplying a flat strip of non-ferrous metal to a forming apparatus (212), where a thickness of the strip corresponds to a wall thickness of the coaxial cable. The forming apparatus is configured to continuously form the supplied flat strip into a form corresponding to the outer conductor of the coaxial cable and around the cable core supplied before the outer conductor is closed. After shaping, the two opposite edges of the flat strip lie flush with each other in the contact region and are continuously welded to each other by means of a laser which emits light having a wavelength of less than 600 nm by means of a welding device (216). The laser heats a point in the welding region having a diameter less than 20% of the cross-sectional dimension of the coaxial cable. The welded coaxial cable is withdrawn from the welding region and received in a receiving device (226) after introduction of the parallel or helical corrugations.

Description

technical field [0001] This invention relates to the production of coaxial cables with non-ferrous outer conductors, and in particular to the continuous production of such cables with thin-walled outer conductors. Background technique [0002] Thin-walled, radially closed hollow profiles, in particular thin-walled, radially closed hollow profiles with a circular cross-section, can be used as outer conductors of RF cables or coaxial cables. An inner conductor coated with a dielectric is then arranged in the center of this hollow profile. The dielectric may eg comprise a plastic material with a suitable relative permittivity, but may also separate the inner conductor from the outer conductor substantially only by air or another non-conductive gas component. For this purpose, the inner electrical conductor can be held in the middle of the hollow profile by means of spacers arranged at a distance, or a macroporous foam containing mainly air or gas can be used. In order to achi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/016H01B13/06H01B13/26H01B13/00
CPCH01B13/016H01B13/0009H01B13/06H01B13/2646H01B13/0036H01B13/0165H01B13/264H01B13/2626B23K26/262B21C37/08B23K2103/08B23K2101/38B23K26/0846H01B13/0016H01B13/0003
Inventor 拉尔夫·埃格雷尔奥拉夫·彼得森史蒂文·丁克尔
Owner NEXANS
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