江苏春晨电缆有限公司：https://www.ybzhan.cn/st82365/

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The plastic extrusion of wire and cable is carried out by continuous extrusion. Through the extruder screw extrusion, plastic bag to the conductor or wire core, an insulating layer, a shielding layer, an inner protective layer, and the outer sheath of wires and cables.

塑料挤出机组通常由放线装置及放线张力装置、校直装置、预热装置、挤塑机（主机）、冷却装置、火花试验机、计米装置、牵引装置、收线装置及控制系统等组成。

Plastic extrusion unit usually consists of line device and line tension device, straightening device, preheating device, extrusion machine (host), cooling device, spark testing machine, meter device, traction device, take-up device and control system.

In order to ensure the continuous production of non-stop machine for disc, line device is composed of two sets of line equipment, conductor or cable core from the wire releasing device after the release, enters the preheating device by straightening device, the conductor conductor can eliminate the residual stress in the preheating after heating, the elongation and increase flexibility. The plastic extruder is processed into high temperature viscous and continuous extrusion to die, conductor or cable core through the nose, extruded into a certain thickness of the plastic insulating layer or sheath, then the water in the sink or in the pipeline or gas cooling, wire and cable products after cooling, the traction device under linear drag exercise, make the process stable and continuous, and finally by the first winding device in the take-up spool.