Cable three-layer supply forming equipment

Abstract

The cable three-layer supply forming equipment comprises an extruder and a mold machine head, the extruder comprises a machine shell and a threaded sleeve installed in the machine shell, one end of the threaded sleeve extends out of the machine shell to form an extrusion opening, the interior of the threaded sleeve is hollowed out to form an inner cavity, and a feeding box for feeding materials into the inner cavity is installed on the machine shell; the step-by-step temperature control device can carry out step-by-step temperature control on the extrusion screw and accurately control the extrusion temperature of raw materials at each stage, so that the extrusion speed can be accelerated, and as friction heat and shearing heat generated during high-speed operation of the extruder can destroy heat balance, the step-by-step temperature control device sometimes is difficult to lower the temperature, so that the extrusion speed is increased. The cooling circulating device installed in the cooling tank can strengthen the cooling force and improve the adjustability of the temperature of raw materials, the raw materials enter the forming cavity from the middle-layer discharging port and the inner-layer feeding port to wrap the wire, the outer-layer raw materials are guided into the extrusion gap through the material guiding tank to wrap the inner-layer raw materials and the middle-layer raw materials, and therefore the inner-layer raw materials and the middle-layer raw materials are wrapped. The three layers of raw materials are integrally formed on the wire, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the field, in particular to a cable three-layer supply forming equipment. Background technique [0002] Cables include power cables, control cables, compensation cables, shielded cables, high-temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum alloy cables, etc. They are all composed of single or multi-strand wires and insulation layers, and are used to connect circuits, electrical appliances, etc. Nowadays, due to the harsh environment of some cables, the quality requirements for the life of the cables are very high. It is the need of social development to produce a cable with three layers of protection. [0003] The production efficiency of the three-layer supply equipment in the prior art is low and cannot meet the requirements of customers. During the process of melting the raw materials in the extruder to extrusion, it is very critical to contro...

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Problems solved by technology

[0003] The production efficiency of the three-layer supply equipment in the prior art is low and cannot meet the requirements of customers. During the process of melting the raw materials in the extruder to extrusion, it is very critical to control the temperature at each stage, which also directly affects the extrusion process. The output speed and temperature are too high, the fluidity of raw materials is large, the later molding is unstable, the temperature is too low, and the extrusion speed is slow; the mold head in the prior art cannot integrally form the cables supplied by the three layers, resulting in slow production efficiency. and uneven extrusion

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