Method and device for eliminating metal braid burrs on cable shielding layer

Abstract

The invention relates to a method and device for eliminating burrs in the metal braiding of the cable shielding layer. During the weaving process of the metal wire of the shielding layer, burrs are often generated due to broken wires or ingot replacement. In the past, simple manual methods were used to deal with the burrs, which caused the burrs to stick out of the sheath and caused sparks to strike. wear, affecting the electrical performance and quality of the cable. The technical solution of the present invention is to use a device equipped with PU strips to make use of the wear resistance of the PU material to smooth the burrs after weaving and trimming, and then press the sheath. The device is composed of a fixed nut, a rear distribution plate, a solid PU strip, a front distribution plate, a wire passing mold, and a support frame. The positive effect of the invention is that the braided layer with burrs rubs in the tightly wrapped solid PU strip, and the braided layer of metal wire appears relatively smooth after rubbing, the burrs are eliminated, and the phenomenon of spark breakdown of the sheath is greatly reduced. The invention has the advantages of simple structure, convenient installation, stability and reliability, and good applicability, and is suitable for extrusion of all wire braided wire sheaths.

Description

technical field [0001] The invention relates to a production equipment of a cable with a braided shielding layer, in particular to a method and a device for eliminating burrs of a metal wire braided layer when the sheath of a cable with a metal braided shielding layer is extruded. Background technique [0002] In the current production of communication cables, the shielding method of many cables with electrical performance requirements adopts the method of wire braiding shielding. In the braiding production process, due to the limited wire loading of the spindle of the braiding machine, the cable required by the customer The length is long, and the wiring method of changing ingots is often adopted in production to meet the customer's fixed length requirements. In the production process, sometimes the braided metal monofilament is broken. The operation after the above two situations is simple. Manual processing, that is, directly pull out the metal wire from the wire ingot an...

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Problems solved by technology

[0002] In the current production of communication cables, the shielding method of many cables with electrical performance requirements adopts the method of wire braiding shielding. In the braiding production process, due to the limited wire loading of the spindle of the braiding machine, the cable required by the customer The length is long, and the wiring method of changing ingots is often adopted in production to meet the customer's fixed length requirements. In the production process, sometimes the braided metal monofilament is broken. The operation after the above two situations is simple. Manual processing, that is, directly pull out the metal wire from the wire ingot and wind it under the eye mold, and then press the jog button of the braiding machine to make the metal wire braided on the braided layer, and trim the thread ends to ensure a smooth appearance. But often During the trimming process of the thread end, it is impossible to ensure that the thread end is completely trimmed smoothly, or the repaired thread end is wound on the take-up shaft, and the repaired thread end is tilted again due to the bending of the wire rod, resulting in a weaving error when the sheath is extruded in the next process. The trimmed burrs are not smooth enough, which causes pinholes or broken skin in the sheath with burrs, which leads to the bad problem of spark breakdown. After the sheath has spark breakdown, the wire must be cut, so that the fixed length of some wires cannot meet the requirements. The customer can't deliver the goods according to the requirement of fixed length, resulting in a large scrap

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