Mould for cable extruding equipment

Abstract

The invention discloses a mould for cable extruding equipment. The mould comprises a cable hole, an inner coating layer feeding channel and an outer coating layer feeding channel which are sequentially arranged from inside to outside, wherein a first extruding mould cavity and a second extruding mould cavity are sequentially arranged behind the cable hole; the cable hole communicates with the first extruding mould cavity; the first extruding mould cavity communicates with the second extruding mould cavity; and a liquid nitrogen cooling room is arranged outside each of the two extruding mould cavities. According to the mould for the cable extruding equipment disclosed by the invention, the liquid nitrogen cooling rooms and vacuum heat-insulating layers can quickly cool cables which complete inner coating layer coating and outer coating layer coating, the liquid nitrogen cooling rooms are prevented from reducing temperatures of molten-state coating layer materials in the coating layer feeding channels to damage the state of the molten-state coating layer materials, and quality of the cable coating layers is prevented from being affected, so that once extrusion forming is realized, and the good extruding quality is achieved.

Description

technical field [0001] The invention relates to the technical field of cable production equipment, in particular to a mold for cable extrusion equipment. Background technique [0002] In cable production, after the cable passes through the cable forming equipment, it generally needs to be squeezed and coated with the inner liner and the outer sheath layer by extrusion equipment, and some use two extrusions, that is, the inner liner is squeezed from the extrusion After the equipment is pulled out and the cable is cooled, it enters the extrusion equipment again to extrude the outer sheath layer. This method has good extrusion quality, uniform thickness of the inner lining layer or outer sheath layer, and smooth surface, but the efficiency is low and the workload is large; One method is one-time extrusion molding, but in the prior art, the molding quality of this method is poor, the inner lining layer and the outer sheath layer penetrate each other, the layers are unclear, the ...

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Problems solved by technology

[0002] In cable production, after the cable passes through the cable forming equipment, it generally needs to be squeezed and coated with the inner liner and the outer sheath layer by extrusion equipment, and some use two extrusions, that is, the inner liner is squeezed from the extrusion After the equipment is pulled out and the cable is cooled, it enters the extrusion equipment again to extrude the outer sheath layer. This method has good extrusion quality, uniform thickness of the inner lining layer or outer sheath layer, and smooth surface, but the efficiency is low and the workload is large; One method is one-time extrusion molding, but in the prior art, the molding quality of this method is poor, the inner lining layer and the outer sheath layer penetrate each other, the layers are unclear, the thickness is uneven, and the surface is not good-looking, which affects the quality of the cable

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