Preparation system of polyvinyl chloride insulated power cable

Abstract

The invention relates to the technical field of cable preparation, in particular to a preparation system of a polyvinyl chloride insulated power cable. The preparation system comprises a rack, a wire inlet wheel is fixedly connected to the upper end of the outer surface of the rear end of the rack, and a wire guide rod is fixedly connected to the position, close to the wire inlet wheel, of one side of the inner surface of the rack. A baffle is fixedly connected to the position, close to the wire guide rod, of one side of the inner surface of the rack, a lubricating mechanism is fixedly connected to the center position of the outer surface of the rear end of the baffle, a mold is fixedly connected to the center position of the outer surface of the front end of the baffle, and a take-up wheel is fixedly connected to the upper end of the outer surface of the front end of the rack. The surface of a copper wire can be evenly coated with lubricating liquid, friction between the copper wire and the mold is avoided, a large amount of heat energy is prevented from being generated, the temperature of the mold and a metal wire is increased, and then the metal wire is prevented from being broken in the stretching process, lubricating liquid coating is even, and it is avoided that drawing of the copper wire is affected by too little lubricating liquid. Or material waste caused by excessive lubricating liquid is avoided.

Description

technical field [0001] The invention relates to the technical field of cable preparation, in particular to a preparation system for polyvinyl chloride insulated power cables. Background technique [0002] Power cables are cables used to transmit and distribute electric energy. Power cables are often used in urban underground power grids, power station lead-out lines, internal power supply in industrial and mining enterprises, and underwater transmission lines across rivers and seas. In power lines, the proportion of cables is gradually increasing. Power cables are cable products used to transmit and distribute high-power electric energy in the backbone lines of power systems. PVC insulated cables are medium and low voltage cables (generally refer to 35KV and below); [0003] The production and preparation system of power cables includes wire drawing machines and extruders. Cable forming machine, braiding machine, fork stranding machine, wire rewinding machine, wire measurin...

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Problems solved by technology

[0004] In the prior art, the wire drawing machine produces friction between the metal wire and the mold during the drawing process, thereby generating a large amount of heat energy, which makes the temperature of the mold and the metal wire rise, which in turn causes the metal wire to sag during the drawing process. In the case of fracture, the metal wire needs to be cooled and lubricated during the wire drawing process, but the current method of lubricating the mold of the wire drawing machine is shower lubrication, which is a method in which the flywheel rotates during the wire drawing process and the drawing oil in the drawing chamber is thrown off and splashed. Randomly splashing on the surface of the mold to cool the mold, the amount of drawing oil that can enter the internal friction surface of the mold is inaccurate, and the reaching position is also uncertain, so it is easy to cause excessive heat generation of the mold and cause wire breakage, and the mold The life of the wire is relatively short, which affects the drawing effect and efficiency

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