Method for manufacturing semirigid mould for coaxial cable, and the mould

Abstract

The method includes steps: core wire with insulating layer being wrapped is penetrated into semirigid outer conductor pipe, and threaded out of the other end of the pipe; thinning process is carried out for outside diameter at one end of the outer conductor pipe; thinned end is threaded through a draw die, and drawing is carried out on a draw bench. The draw die includes a broaching. The broaching includes lubrication sect, transition sect, and diameter form sect arranged from feeding-in direction to discharging direction. The lubrication sect, and transition sect are cone sects with large ends towards the feeding-in direction. The diameter form sect is in cylindrical form. The invention eliminates gap between the outer conductor and core wire with insulating layer so as to raise performance of product. Since the outer conductor pipe with larger inside diameter is adopted, product longer than 15m can be produced in order to meet requirement of use such as delay line of comm. cabinet.

Description

Method for manufacturing semi-rigid coaxial cable and mold thereof technical field The invention relates to a method for manufacturing a coaxial cable, and also relates to a mold used in the method, more specifically, to a method for manufacturing a semi-rigid coaxial cable and the mold thereof. Background technique The manufacturing method of the existing semi-rigid coaxial cable is that the core wire with the outer sheath is penetrated from one end of the semi-rigid outer conductor (the outer conductor of the semi-rigid coaxial cable generally adopts a copper tube) and the other end is passed out. made. In order to be able to operate, there must be a certain gap between the outer conductor and the core wire, the gap is about 0.1 mm, such a small gap makes the transmission of the core wire very difficult, and also greatly limits the length of semi-rigid coaxial cable products, such as The insulation layer is 3 mm, and the product length of the semi-rigid coaxial cable wi...

AI Technical Summary

Problems solved by technology

The semi-rigid coaxial cable product obtained by the existing semi-rigid coaxial cable manufacturing method loses the meaning of coaxial cable because there is a gap between the core wire and the outer conductor, and the core wire and the outer conductor are not in the same axis. Various quality parameters are unstable and uneven, and cannot meet the quality requirements of coaxial cables, such as serious signal loss, and it is easy to cause dielectric constant drift. Used as a delay line in the communication cabinet, etc.

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