Positive displacement wire and cable sheath extruding machine and extruding method thereof

Abstract

The invention relates to the technical field of wires and cables, in particular to a positive displacement wire and cable sheath extruding machine. The extruding machine comprises a supporting base and an extruding mechanism arranged at the top of the supporting base. The extruding mechanism at least comprises a spiral conveying device, a positive displacement conveying device and an extruding device, wherein the spiral conveying device comprises a stirring box, electrical heating elements are embedded into the top and the bottom of an inner cavity of the stirring box respectively, a spiral rod is rotationally arranged in the stirring box, and feeding hoppers are arranged at the top of the stirring box in a communicating mode; the positive displacement conveying device comprises a conveying box, the conveying box communicates with the stirring box, two rotors are rotationally arranged in the conveying box, and the outer wall of the conveying box communicates with a conveying cylinder;and the extruding device comprises an extruding box, the outer wall of the extruding box communicates with a communicating cylinder, the end of the communicating cylinder is provided with two symmetrical fixing arc grooves and rotationally communicates with an adjusting plate, and the surface of the adjusting plate is provided with two symmetrical adjusting arc grooves. The extruding machine has the advantages that raw materials are convenient to stir and convey, the compactness is improved, and the conveying of the raw materials can be stopped in time.

Description

technical field [0001] The invention relates to the technical field of wires and cables, in particular to a volumetric wire and cable sheath extruder and an extrusion method thereof. Background technique [0002] Wire and cable are used to transmit electric (magnetic) energy, information and wire products that realize electromagnetic energy conversion. In the broad sense, wires and cables are also referred to as cables for short. In the narrow sense, cables refer to insulated cables, which can be defined as: a collection composed of the following parts; one or more insulated cores, and their respective possible coatings. Protective layer and outer sheath, the cable may also have additional uninsulated conductors; [0003] Taking the sheath of plastic material as an example, the plastic material is coated on the outside of the conductive wire core. The existing method is to use an extruder to heat and melt the plastic raw material, extrude and wrap it around the continuously...

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Problems solved by technology

[0003] Taking the sheath of plastic material as an example, the plastic material is coated on the outside of the conductive wire core. The existing method is to use an extruder to heat and melt the plastic raw material, extrude and wrap it around the continuously moving conductive wire core, and then cool and solidify. Shaped to form a firm insulating sheath on the outer periphery of the conductive wire core. However, when the current extruder transports the sheath raw material, it cannot effectively extrude the raw material, and it is easy to cause gaps in the raw material, which affects the compactness of the rubber material and reduces the sheath. The strength and toughness of the sleeve are not very practical, and the current extruder is inconvenient to stop the delivery of raw materials in time after extrusion, so that more raw materials flow out of the extrusion head, resulting in waste of raw materials and increased costs. In view of this, We propose a volumetric wire and cable sheath extruder and its extrusion method

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