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How should a silicone extruder be maintained and serviced?

Time：

2020-03-23

An extruder is a type of plastic machinery and is used to manufacture silicone rubber products. Hebei Shuangda Rubber & Plastics Machinery reminds users to perform proper maintenance and routine upkeep when operating a silicone extruder; specific procedures are as follows: 1. Inspect the V‑belts and pulleys in the V‑belt drive for signs of wear, and adjust the center distance of the drive to ensure appropriate belt tension. Replace any V‑belts that show severe wear. 2. Remove the screw and examine the barrel and screw for wear. For minor scratches or rough surfaces, use an oilstone or fine sandpaper to smooth and polish the surfaces until they are even and glossy. Also, record the actual inner diameter and outer diameter of both the barrel and the screw. 3. Disassemble the gear reduction gearbox,

An extruder is a type of plastic-processing machinery and is used to manufacture silicone rubber products. Hebei Shuangda Rubber & Plastics Machinery advises that, during daily operation, proper maintenance and upkeep are essential; specific guidelines are as follows.

1. Inspect the V-belts and pulleys in the V-belt drive for wear, and adjust the center distance of the V-belt drive to ensure proper belt tension; replace any V-belts that are severely worn.

2. Remove the screw and inspect the barrel and screw for wear. For minor scratches or rough surfaces, use an oilstone or fine sandpaper to grind and polish until the surface is smooth and even; record the actual dimensions of the barrel and screw’s inner bore and outer diameter.

3. Disassemble the gear reducer and bearing cover, inspect the lubricant quality and the level of metal particles in the oil, clean the lubrication points as necessary, and replace or filter the lubricant.

4. Inspect the transmission gears and rolling bearings for wear; severely worn gears shall be measured and mapped. Based on requirements, prepare a spare-parts manufacturing and procurement plan to ensure replacement during the next maintenance.

5. Regularly inspect the purity of the raw materials; no foreign matter such as sand particles or metal powder shall be allowed to contaminate the materials and enter the barrel.

6. Regularly inspect lubricated components and replenish lubricant as needed; during operation, the temperature rise at bearing locations should not exceed 50°C.

The barrel must be maintained at a constant temperature for an adequate heating period, and raw materials must not be processed below the specified process conditions.

7. When operating the screw, start at low speed; after running for a while and confirming normal operation, gradually increase the screw speed.

8. When the barrel is empty, the screw must not be run idly for extended periods; the idle running time should not exceed 2–3 minutes.

9. Regularly monitor the ammeter reading for fluctuations in the screw‑driving motor’s current. If the motor operates under heavy load for an extended period, stop the machine, identify the cause of the fault, and resume production only after the issue has been resolved.

10. After the barrel has been heated to the process temperature for the first time, retighten the mounting bolts that secure the barrel to the machine base.

11. Inspect and maintain the vacuum pump, clean the vacuum piping, and calibrate the vacuum gauge.

12. When installing the mold and screw, ensure that the mating surfaces are clean and free of foreign matter. Apply a thin layer of silicone oil to the fastening bolts to facilitate disassembly. Do not strike the component surfaces with a heavy hammer during disassembly; if necessary, place a hardwood block underneath and use the hammer to tap the hardwood for removal.

Hebei Shuangda Rubber & Plastics Machinery Co., Ltd. is a modern enterprise integrating R&D, manufacturing, and sales of complete sets of extrusion equipment for rubber, silicone, and plastics. The company’s main products include rubber extruders, rubber hose extrusion lines, three‑layer composite sealing strip extrusion lines, silicone sealing strip production lines, plastic sealing strip production lines, plastic profile production lines, plastic pipe production lines, elastomer extruders, and other extrusion equipment, as well as production machinery for engineering seals, automotive seals, wire and cable applications, air‑conditioning hoses, braided hoses, automotive hoses, waterstop strips, and related products.