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Introduction of Plastic Extrusion Line for Cable Production Equipment
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Introduction of Plastic Extrusion Line for Cable Production Equipment

Let's take a look at the detailed introduction of the plastic extrusion production line of the cable production equipment:


1. The plastic extrusion of the wire and cable of the plastic extrusion line is carried out by continuous extrusion. Through the extruder with a screw, the plastic is wrapped on the conductor or the core to form the insulation layer, shielding layer, inner protective layer, and outer jacket of the wire and cable.


2. The plastic extrusion unit usually consists of a plastic extrusion line pay-off device and a pay-off tension device, a straightening device, a preheating device, a plastic extruder (host), a cooling device, a spark tester, a meter device, a traction device, take-up device and control system, etc.


3. In order to ensure non-stop change of reels and continuous production, the pay-off device of the plastic extrusion production line consists of two pay-off devices. After the conductor or cable core is released from the pay-off device of the extrusion line, it enters the preheating device through the straightening device. After the conductor is preheated and heated, the residual stress of the conductor core can be eliminated, and the elongation and flexibility can be increased.


4. In the plastic extrusion production line, the extruder processes the plastic into a high-temperature viscous flow state and continuously extrudes it toward the machine head. When the conductor or cable core passes through the machine head, it is extruded into a plastic insulation layer or outer sheath of a certain thickness. Then it is cooled by water or air in the water tank or pipeline, and the shaped wire and cable products are cooled and moved linearly under the drag of the traction device to make the processing process go on stably and continuously. Finally, the first device is wound on the take-up reel.



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