Winter maintenance tips for plastic extrusion equipment

Good operation of the production line

From the usual careful care

Maintenance of equipment extrusion

Specific measures are as follows:

1. Comprehensively clean the dust on the electrical components inside the electric control box, focusing on cleaning the inverter, speed regulator and PLC. You can use compressed air to blow air inside the components, but there should be no moisture. Tighten loose cables and wire joints; check the cable insulation. Aged or poorly contacted components need to be replaced in time.
2. Record the various rated parameters on the computer screen and check before starting the computer next time. If any differences are found, please enter the data according to the record.
3. Check the grease fittings at the front and rear of the main motor, replace and add grease, and check whether the plum blossom pad of the coupling is damaged. Check whether there is any abnormal noise in the reduction box, and fill and replace the gear oil in the reduction box. Open the reduction box, carefully clean the moving parts and box body, clean the bearings; replace the lubricating oil;
4. Clean the waterway of the host machine and drain the accumulated water in the water inlet and outlet system to prevent the pipes from bursting due to the cold in winter.
5. Check the water channel cleaning of the cooling copper tube in the core of the mold. Drain the water in the water pump, vacuum pump, and all filters to prevent the pump blades from rusting and freezing. After stopping the machine, clean the material between the die core rods, and the feed port should be coated with anti-rust oil and sealed with a stretch film.
6. Check whether the moving parts of each equipment are sufficiently lubricated. In particular, parts such as screws, rollers, bearings, guide posts, etc. that run frequently must be prevented from being stuck due to excessively low temperatures, thus affecting normal production. Bearings, cardan shafts, etc. need to be lubricated regularly.
7. Check and calibrate instruments that display pressure, current, voltage, meter counting, etc.; check the heating condition of each heating element and replace damaged heating and sensing elements.
8. Empty the material inside the screw before stopping the machine to prevent the material from flowing back the next time the machine is started. Take out the screw and brush the screw barrel with oil to prevent rust and corrosion. Disassemble and clean the screw, barrel, and machine head according to the situation; measure the outer diameter of the screw; check the inner wall of the barrel and the die for wear and scratches. Grind and trim local scratches and burrs on the working surface until it is smooth and free of hanging materials.
9. Before starting the machine next time, please use a multimeter to measure whether there is a short circuit between the three-phase wires and between the three-phase wires and the ground to prevent mice from biting the wires and causing short circuits.
10. Add lubricating oil to all sprockets and chains, and perform anti-rust treatment on all exposed parts prone to rust.

Equipment extrusion maintenance period

The specific maintenance periods are as follows:

1. The gearbox oil should be changed every 4000 to 5000 hours of operation, and at least once a year;
2. Bearings, cardan shafts, etc. need to be lubricated regularly;
3. The rubber pad at the coupling needs to be checked for coaxiality and wear every three months;
4. The oil filter element of the hydraulic system needs to be replaced once every six months, and the pressure of the energy storage tank needs to be checked regularly;
5. Clean the condenser and scale of the water roller temperature system regularly. The recommended cycle is once every six months;
6. If the rollers and cooling rollers are not used for a long time, they should be coated with anti-rust oil and wrapped with cotton cloth.
7. The traction rubber roller should be cleaned regularly with non-oily detergent and treated with anti-aging treatment if not used for a long time;
8. The components of the electrical cabinet should be checked regularly, and aging or poorly contacted components need to be replaced in time;
9. The downtime will be long during the year-end holidays. Before shutting down for the holidays, the water must be drained out of the water-operated equipment to prevent the equipment from being frozen (cracked).

Preventive measures for drainage and antifreeze

Before the holidays, the following parts must be drained and protected against freezing:

After the extruder equipment is put into operation, after a long period of operation, spare parts for wearing parts should be prepared in advance, spare parts plans should be made, and purchases should be arranged in advance.

1. Heating rings for barrel and die.
2. Thermocouple.
3. Plum blossom pad of coupling.
4. Reduction box sealing ring.
5. Main motor brush.
6. Main motor bearings.
7. Thrust bearings and all ball bearings of the reduction box.
8. Reduction box gear or gear shaft.
9. The pulley or coupling on the motor shaft.
10. Temperature control meter.

Thank you for your trust and support in Jwell Company. If you have any questions, you can call the general manager of the relevant professional company at any time. We will provide all-round help and cooperation to help everyone carry out their work smoothly.

General Manager of Jwell Machinery (Haining) Co., Ltd.
Lou Yijian 13501675166

General Manager of Zhejiang Jinwei Pipeline Equipment Manufacturing Co., Ltd.
Yin Chao 13918229096

General Manager of Zhejiang Jiewei Precision Machinery Co., Ltd.
Wang Liang 18851217588

General Manager of Zhejiang Jinwei Sheet Film Equipment Manufacturing Co., Ltd.
Chen Junhai 13917612260

General Manager of Zhejiang Jinwei Extruder Technology Co., Ltd.
She Long 15706714563