High-resistance flame-retardant PVC cable production device and use method

Abstract

The invention discloses a high-resistance flame-retardant PVC cable production device and a use method in the technical field of flame-retardant cable production, the high-resistance flame-retardant PVC cable production device comprises an extrusion cylinder, the right end of the extrusion cylinder is an extrusion end and is conical, and the upper end and the lower end of the extrusion cylinder are both communicated with storage boxes; in the working process, the downward pressing speed of the extrusion plate can be changed according to the wire conveying speed, the downward pressing speed of the extrusion plate determines the insulator extrusion speed of the extrusion barrel, when the wire conveying speed is changed, the extruded insulator can still wrap the wire, and the situation that the extrusion speed of the insulator is constant, and the insulator cannot be damaged is avoided. When the conveying speed of a wire changes, more insulators on the surface of the wire are stacked or less insulators on the surface of the wire are stretched, so that the diameter of the wire is greatly changed, the wire may leak electricity, and danger is caused during use; and the two material storage boxes can alternately and continuously work, so that the device is suitable for continuous and uninterrupted work.

Description

technical field [0001] The invention relates to the technical field of flame-retardant cable production, in particular to a high-resistance flame-retardant PVC cable production device and a use method. Background technique [0002] PVC cable material is based on polyvinyl chloride resin, adding stabilizers, plasticizers, calcium carbonate and other inorganic fillers, additives and lubricants, and other additives, and the particles are prepared by mixing, kneading and extruding. PVC cable material is low in price and excellent in performance. It has long occupied an important position in wire and cable insulation and protection materials. At present, plastics account for 91% of cladding materials, and polyvinyl chloride accounts for 80% of plastics. PVC is Chlorine-containing polymers have good flame retardant properties and various properties required for cable production and use. They are cheap and are one of the most widely used plastics in the world. [0003] In the prio...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high-resistance flame-retardant PVC cable production device and use method to solve the above-mentioned background technology. The surface of the surface will be covered with an insulating layer. The insulating layer is usually extruded from the molten insulating layer while the wire is being conveyed, and then cooled. The cooled insulating layer will wrap the wire. However, when extruding the molten insulator, usually The extrusion speed is artificially set. Generally, the extrusion speed remains unchanged during work. Changes in the wire conveying speed will cause the extruded molten insulator to accumulate or be less locally, which will affect the quality of the produced wire and cause the problem of wire leakage.

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