The auxiliary equipment of plastic granulating machine mainly includes wire release device, straightening device, preheating device, cooling device, traction device, meter counter, spark tester, and wire closing device. The auxiliary equipment used for different purposes of the extrusion unit is not the same. For example, there are cutters, blow dryers, printing devices, etc.

Straightening device: plastic extrusion waste type is a common type of eccentricity, while the core of a variety of types of bending is one of the important reasons for the insulation eccentricity. In sheath extrusion, sheath surface scratches are also often caused by the bending of the cable core. Therefore, a variety of extrusion units in the straightening device is not missing. The main types of straightening devices are roller type (divided into horizontal and vertical); pulley type (divided into single pulley and pulley group); stranded pulley type, both dragging, straightening, stabilizing tension and other roles; pressure wheel type (divided into horizontal and vertical) and so on.

Preheating device: cable core preheating for insulation extrusion and sheath extrusion is required. For the insulation layer, especially the thin layer of insulation, can not allow the existence of pores, the core in the extrusion package before the high temperature preheating can clear the surface of the water, oil and dirt. For the sheath extrusion, the main role is to dry the cable core, to prevent the role of moisture (or moisture around the bedding layer) so that the sheath in the possibility of porosity. Preheating can also prevent the role of plastic extrusion due to sudden cooling and residual internal pressure. In the extrusion process, preheating can ease the cold line into the high-temperature head, pelletizing machine manufacturers in the die mouth and plastic contact formed when the disparity in temperature, avoiding fluctuations in plastic temperature and lead to fluctuations in extrusion pressure, so as to stabilize the amount of extrusion, the quality of extrusion. Extrusion unit is used in the electric heating core preheating device, which requires a sufficient capacity and ensures that the temperature rises quickly so that the core preheating and cable core drying efficiency. Preheating temperature is subject to the constraints of the speed of the release, generally similar to the temperature of the head on the line.

Cooling device: molding of plastic extrusion layer in the head after leaving, should be cooled to set, otherwise, it will be deformed under the action of gravity. The way of cooling usually uses water cooling, and according to the water temperature is different, divided into rapid cooling and slow cooling. Rapid cooling is the direct cooling of cold water, rapid cooling of plastic extrusion layer sizing is beneficial, but for crystalline polymers, due to sudden cooling, easy to residual stress in the organization of the extrusion layer, resulting in the use of the process of cracking, the general PVC plastic layer using rapid cooling. Slow cooling is to reduce the internal stress of the product, in the cooling water tank placed in sections of different temperatures of water, so that the product gradually cool down and set, PE, PP extrusion on the use of slow cooling, that is, after hot water, warm water, cold water three cooling.

WANROOETECH insists on the brand belief of “let technology and art achieve industrial intelligence” and the core value of “do flat and double extrusion automation”, and its core products include intelligent equipment of co-parallel twin-screw, plastic granulating machine, filling, co-mixing and modification. Our core products include intelligent equipment of co-rotating twin-screw, strip pelletizing, filling, co-mingling modification, water-ring thermal cutting, air-cooled die surface thermal cutting, underwater plastic granulating machine and continuous dense extrusion lines, providing customers with intelligent production environment solutions based on rubber and plastic, and devoting to creating energy-saving, stable and intelligent manufacturing application scenarios.