S-shaped longitudinal wrapping die and longitudinal wrapping method for shielding cable

Abstract

The invention discloses an S-shaped longitudinal wrapping die and a longitudinal wrapping method for a shielding cable. The die comprises a cable, a first mold, a second mold, a third mold and a fourth mold; the cable comprises an outer sheath. A first core wire, a second core wire, a third core wire and a fourth core wire are arranged in the outer cover. First forming holes, second forming holes,third forming holes and fourth forming holes are formed in the surfaces of the first mold, the second mold and the third mold; the surface of the first mold, the surface of the second mold, the surface of the third mold and the surface of the fourth mold are each provided with an aluminum foil forming groove, and the surface of the fourth mold is provided with a fifth forming hole and a sixth forming hole. An existing twisted pair wire process is simplified, production time is saved, and production efficiency and product quality are improved.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to an "S"-shaped longitudinal wrapping mold and a longitudinal wrapping method for shielded cables. Background technique [0002] In the current shielded cable manufacturing industry, in order to meet the electrical performance requirements, especially high-end network communication cable products (CAT6A and CAT7), the structural design basically adopts a single pair of core wires to be dragged and wrapped with aluminum foil when twisted, and the assembled cable Re-tow bag or longitudinal aluminum foil shielding / aluminum foil Mylar tape, if attached figure 1 As shown, No. 1 core wire (2), No. 2 core wire (3), No. 3 core wire (4) and No. 4 core wire (5) are set inside the outer quilt (1), No. 1 core wire (2), The second core wire (3), the third core wire (4) and the fourth core wire (5) are respectively wrapped with a layer of aluminum foil layer (6). The corresponding shielding eff...

AI Technical Summary

Problems solved by technology

[0002] In the current shielded cable manufacturing industry, in order to meet the electrical performance requirements, especially high-end network communication cable products (CAT6A and CAT7), the structural design basically adopts a single pair of core wires to be dragged and wrapped with aluminum foil when twisted, and the assembled cable Re-tow bag or longitudinal aluminum foil shielding / aluminum foil Mylar tape, if attached figure 1 As shown, No. 1 core wire (2), No. 2 core wire (3), No. 3 core wire (4) and No. 4 core wire (5) are set inside the outer quilt (1), No. 1 core wire (2), The second core wire (3), the third core wire (4) and the fourth core wire (5) are respectively wrapped with a layer of aluminum foil layer (6). The corresponding shielding effect can be achieved by dragging or wrapping aluminum foil shielding separately, but judging from the current development trend, the cables are getting smaller and smaller, the transmission performance is getting higher and higher, and the industry competition is becoming more and more fierce. Cost control is particularly important. The existing production method uses aluminum foil shielding in the two processes, which has the following defects and deficiencies: when the single pair is twisted, there is a quality problem that the aluminum foil is scratched on the aluminum foil, and the scratch on the aluminum foil will cause signal Leakage, which in turn affects the electrical performance of the wire; the existing method of twisting the four pairs of wires is dragged and wrapped with aluminum foil. Since the structure of the twisted wires has already been formed, it cannot be adjusted during the production process, and the structure is not round and compact when the cable is twisted. ;Twisting and cabling both processes need to use aluminum foil, and the equipment needs to be equipped with a corresponding tape wrapping machine, and the amount of aluminum foil is large, and the cost is high; when twisting, the aluminum foil is dragged to ensure the overlap rate of the aluminum foil coating. The production speed is slow, the efficiency is low, and the cost of working hours is high; because there are aluminum foil layers inside and outside, the outer diameter of the entire cable will be too large, and the overall flexibility of the cable is not good enough. For shielded network communication cables, comprehensive In the construction and use of the two major applications of wiring and jumpers, the softer the wire, the better.

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