1. The plastic extruder equipment should be placed in the ventilation position to ensure the heat dissipation of the motor and prolong its life; the machine should be well grounded.
2. Regularly check the tool screw. After using the new machine for 1 hour, use the tool to fasten the moving knife and fix the knife's screw to strengthen the fixing between the blade and the tool holder. The bearing should be regularly lubricated to ensure the lubrication between the bearings. To ensure the sharpness of the tool cut, the tool should be inspected frequently to ensure its sharpness and reduce unnecessary damage of other parts due to the blunt blade; periodically check whether the belt is slack and adjust it in time.
3. Restart - Before the second start, the remaining material in the machine room should be removed to reduce the starting resistance. The inertia cover and the pulley cover should be opened regularly to remove the ash outlet under the flange, because the crusher discharges the powder into the shaft bearing.
4, replacement parts - when changing the tool, the gap between the moving knife and the fixed knife: 0.8MM is better than 20HP crusher, 0.5MM below 20HP is better. The thinner the regrind, the larger the gap can be.
The plastic extruder can be matched with various plastic molding auxiliary machines such as pipe, film, holding material, monofilament, flat wire, packing belt, extrusion net, plate, profile, granulation, cable coating, etc. Out of the molding production line, producing a variety of plastic products.
Nearly twenty years ago, what we know of extruder loading was usually done manually, and it was very difficult for people to pack the pellets from somewhere into bags or into boxes in the hopper of the extruder. However, with the introduction of automation technology in the processing of plastics, people can be freed from heavy physical labor and dusty environments. The work originally done manually is now done automatically by the conveyor equipment.
Through the joint efforts of the industry's technology and R&D personnel, some major special types such as exhaust extruder, tandem disc screw extruder, reciprocating pin screw extruder, foaming extruder, and melt gear pump The extruder, tandem multi-stage extruder, planetary screw extruder, etc. are all produced in China, with independent research and development capabilities, and enjoy independent intellectual property rights.
The extruder can be divided into single-screw, twin-screw and multi-screw extruders according to the number of screws. At present, the single-screw extruder is the most widely used, and is suitable for extrusion processing of general materials. The twin-screw extruder has less heat generated by friction, the shearing of the material is relatively uniform, the conveying capacity of the screw is larger, the extrusion amount is relatively stable, the material stays long in the barrel, and the mixing is uniform. SJSZ series conical twin-screw extruder has the characteristics of forced extrusion, high quality, wide adaptability, long service life, small shear rate, difficult material decomposition, good mixing and plasticizing performance, direct molding of powder, and temperature control. Vacuum exhaust and other devices. Applicable to the production of tubes, plates, profiles and other products.
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