Equipment for co-extruding three layers of cables and automatically adjusting concentricity

Abstract

The invention discloses equipment for co-extruding three layers of cables and automatically adjusting the concentricity. The equipment comprises a first co-extruding machine, a second co-extruding machine, a third co-extruding machine and a machine barrel; a cable to be machined penetrates through the machine barrel; certain angles are formed among the first co-extruding machine, the second co-extruding machine and the third co-extruding machine, and the first co-extruding machine, the second co-extruding machine and the third co-extruding machine are mounted on the right side of the machine barrel; the first co-extruding machine, the second co-extruding machine and the third co-extruding machine are provided with a first adjusting bolt, a second adjusting bolt and a third adjusting bolt which are vertical to the axes of the first co-extruding machine, the second co-extruding machine and the third co-extruding machine respectively; a first gear, a second gear and a third gear are fixed at screwing ends of the first adjusting bolt, the second adjusting bolt and the third adjusting bolt respectively; and the first gear, the second gear and the third gear are connected with a motor through a transmission device, so that the adjusting bolts are controlled through controlling the rotation of the motor, and the concentricity of a plastic extruding machine is automatically adjusted, and furthermore, manpower is saved and the adjustment precision is improved.

Description

technical field [0001] The invention relates to the technical field of cable manufacturing, in particular to a device for automatically adjusting concentricity by three-layer co-extrusion of cables. Background technique [0002] Three-layer co-extrusion technology is already a common application technology in cable production operations. Through three-layer co-extrusion technology, it can prevent the introduction of foreign impurities between the main insulating layer and conductor shielding, and between the main insulating layer and insulating shielding. During the process, the possible accidental damage of the conductor shielding and the main insulating layer can be prevented, so that the mechanical damage of the semiconductor electrical layer can form a puncture, so that the inner and outer shielding and the main insulating layer are closely combined, thereby increasing the initial free discharge voltage. [0003] In the prior art, the adjustment of the concentricity in t...

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Problems solved by technology

[0003] In the prior art, the adjustment of the concentricity in the three-layer co-extrusion is mostly adjusted by manually turning the adjustment bolts on the three co-extrusion heads. The concentricity adjustment of the three co-extrusion heads is not synchronized, and it is time-consuming and laborious. Therefore, it is an urgent need in cable production to design a device that can automatically adjust the concentricity of the three-layer co-extrusion.

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