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Tech. for vertically cladding forming coaxial cable by metal band external conductor and mould thereof

A coaxial cable and longitudinal wrapping molding technology, which is applied in the manufacture of coaxial cables, etc., to achieve the effects of ensuring consistency, simplifying mold production, and low manufacturing costs

Inactive Publication Date: 2006-06-14
江苏享鑫科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and to provide a coaxial cable metal strip outer conductor with simple longitudinal wrapping, easy adjustment and replacement, and no uneven, especially periodic defects. Longitudinal wrap molding process

Method used

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  • Tech. for vertically cladding forming coaxial cable by metal band external conductor and mould thereof
  • Tech. for vertically cladding forming coaxial cable by metal band external conductor and mould thereof
  • Tech. for vertically cladding forming coaxial cable by metal band external conductor and mould thereof

Examples

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Effect test

Embodiment 1

[0020] Example 1: see image 3 , 4 , the coaxial cable metal strip outer conductor longitudinal wrap molding die of the present invention is composed of two symmetrical 7-character bar-shaped upper dies 1 and two symmetrically combined (combined stitching lines are omitted in the perspective view) similar U-shaped lower dies 2. The short vertical side of the 7-shaped mold is processed with an inwardly protruding arc approximately equal to the radius of the formed tube, and the upper part of the two upright sides of the lower mold has an inner concave arc that matches the shape, and the combination of concave and convex forms a slit arc for deformation. Groove 3, lower mold U-shaped bottom edge is flat bottom 4, and the bottom edge width gradually shrinks according to the mold axial direction, and the length is to make the arc-shaped wrap angle on both sides of the flat metal strip become an arc of 75-100°. When the cable is longitudinally wrapped with metal tape, the metal ta...

Embodiment 2

[0021] Example 2: see Figure 5 , 6 , as mentioned above, wherein the U-shaped bottom of the lower mold is a gradually shrinking arc 5 .

[0022] According to the concept of the present invention, the upper mold of the mold of the present invention can also adopt a two-piece integral structure, or the mold can be formed into an integral structure by milling.

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Abstract

The invention relates to a process for vertical coating the conductor outside the metal tape of a coaxial cable into a round pipe and the mold improvement thereof, characterized in that the metal tape vertical coating process horizontal pulls and curls by a similarly U-shaped mould with slotted arc grooves on two sides, thus discarding the traditional process of trolley extrusion and curling into arc, not only being a great innovation but also effectively avoiding the defects caused by the possible deviation because of circular roll extrusion of the trolley, especially periodical defect, thus assuring the power transmission property of the vertical coated cables, largely reducing the voltage standing wave ratio (VSWR), and the mould has low manufacturing cost, uneasy to wear and simple to change and regulate, and especially, to adopt an up and down-combined and left and right-assembled mould simplifies the mould making and can assure the mould accuracy.

Description

technical field [0001] The invention relates to the improvement of the process and mold for longitudinally wrapping the outer conductor of the metal tape of the coaxial cable into a round tube. Background technique [0002] The outer conductor of the coaxial cable metal tape is longitudinally wrapped, such as the outer conductor of the corrugated pipe of the radio frequency coaxial cable used for mobile communication. The thin copper strip is bent and deformed into a circle by the longitudinal wrapping process on the outside of the cable, and the mating surface is welded into a copper tube. Then it is corrugated to form bellows. The quality of copper strip longitudinal wrapping has a great influence on cable transmission performance. The existing copper strip longitudinal wrapping is rolled by several roller groups with different curved surfaces and different outer diameters at different forming stages. Gradually rolled and curled into a U-shape with arcs on both sides, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/016
Inventor 朱旭俊许志军刘中华孙余良
Owner 江苏享鑫科技股份有限公司
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