A joint structure of cable aluminum foil strip and its aluminum foil strip splicing method

Abstract

The invention relates to a connector structure of cable aluminum foil tape and a cable aluminum foil tape connecting method. The provided connector structure has the advantage that the quality of electrical signals can be effectively guaranteed, and the provided cable aluminum foil tape connecting method has the advantages of being easy to operate, rapid and convenient to use and low in cost. According to the technical scheme, the connector structure of the cable aluminum foil tape comprises the two pieces of aluminum foil tape which are connected in a lap joint mode, the lap joint end of each piece of aluminum foil tape is overturned in an inclined mode towards the PET face, and after an aluminum foil connector covers the overturned ends of the two pieces of aluminum foil tape, the aluminum foil connector and the aluminum foil tape are bonded to form a whole; the structure of the aluminum foil connector is the same as that of the aluminum foil tape, and aluminum foil on the aluminum foil connector is attached to aluminum foil of the overturned ends in a face-to-face mode. The cable aluminum foil tape connecting method includes the following steps: (1) the two pieces of aluminum foil tape are connected in the lap joint mode to form the lap joint ends with the certain lengths; (2) the lap joint end of each piece of aluminum foil tape is overturned in the inclined mode towards the PET face; (3) the two pieces of aluminum foil tape are connected to form a whole; (4) the edges of the two sides of the aluminum foil tape are trimmed in the length direction of the aluminum foil tape.

Description

technical field [0001] The invention relates to the field of signal transmission, in particular to an aluminum foil for coaxial cable shielding. Background technique [0002] The structure of a conventional coaxial cable is as follows from inside to outside: inner conductor 1, insulating layer 2, aluminum foil layer 3, wire layer 4 and sheath 5; wherein the aluminum foil layer and wire layer together form a shielding layer (also called the outer conductor). Due to the influence of "skin effect", the aluminum foil layer located in the inner layer bears the main shielding function. [0003] The existing aluminum foil layer structure is made by compounding aluminum foil 3-2 and PET layer 3-1 through glue; when manufacturing the cable, first inject the insulating layer outside the inner conductor to form the core wire, then wrap the aluminum foil layer on the outside of the core wire and A high-speed braiding machine braids the metal wire layer on the outside of the aluminum f...

AI Technical Summary

Problems solved by technology

When a strip-shaped aluminum foil layer will be released, a new aluminum foil layer needs to be connected; the existing connection method is simply to overlap the joint ends of the two aluminum foil layers (such as figure 2 , image 3 As shown, keep the orientation of the aluminum foil consistent after lapping); obviously, due to the insulation of the PET layer, the aluminum foil layer forms an open circuit here, and the electrical conduction of the shielding layer can only be maintained through the wire layer; but this causes damage to the cable Shielding performance has a greater impact, and return loss and signal attenuation indicators are difficult to meet higher requirements

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