What should be noted during the debugging process of the plastic extrusion machine?

What should be noted during the debugging process of the plastic extrusion machine?

The plastic extrusion machine, as the main equipment in factory production, has great operational difficulty and danger. So, what precautions should be taken during the debugging process of extrusion operation?

1. Before starting the pipe extrusion every time, it is necessary to check for foreign objects in the barrel, upper and lower parts of the hopper, and inside. Check for loose fastening bolts in all parts, secure safety covers, and correct button switch positions. Then, add sufficient lubricating oil to all lubrication parts, and do a good job in cleaning and hygiene of the equipment.

2. Before starting the machine, check whether the temperature control is sensitive, whether the instrument is malfunctioning, and whether the cooling water circuit is smooth. Usually, methods such as thermometer and cooling water are used for testing.

3. Heat the screw, barrel, and die head of the extruder according to the operating procedures of the extruder. After the temperature rises to the set temperature, it must be kept warm for about 10 minutes before starting the machine, so that the temperature of each part of the machine tends to stabilize.

4. When preparing to drive, notify the staff around the equipment. Before starting the machine, be sure to tighten the connecting screws and bolts of each part of the mold head while it is hot. Before the material is squeezed out, the operator must not stand directly in front of the mold to prevent accidents caused by bolt or screw breakage.

5. Start the motor used to drive the screw rotation at low speed, check if the pointer of the main motor’s working ammeter swings normally. If there is any abnormal sound or unstable screw operation during equipment operation, immediately stop the machine and seek maintenance from relevant personnel.

6. The trial run of the screw during idle operation should not exceed 30 minutes. After everything is normal, connect the mold head and cutting equipment. Install the mold head with connecting bolts, and apply a layer of molybdenum disulfide or silicone oil before use to facilitate disassembly.

7. In the early stage of feeding production, the screw should use the lowest working speed and the feeding should be small and uniform. At any time, check the working ammeter pointer of the motor driving the screw rotation for any abnormal changes.

8. After the extruder is put into normal production work, the operator should regularly check the temperature changes in the bearing area. When checking the temperature of the motor and various bearing parts, gently touch the inspected parts with the back of your fingers. Do not touch any rotating parts with your hands during equipment operation.

9. When disassembling and installing screws and molds, heavy hammers should not be used to directly strike the parts. If necessary, hardwood should be padded before knocking for disassembly or installation.

10. When cleaning the residue on the screw, barrel, and mold, it is necessary to use bamboo or copper knives, brushes, or professional water or air washing equipment to avoid using steel knives to scrape the residue or continuously grill the parts with fire. Alternatively, use specialized screw cleaning materials for non disassembly cleaning.

11. When dealing with extruder faults, the extruder is not allowed to run. When the extruder screw rotates and the mold is adjusted, the operator is not allowed to face the extrusion barrel mouth to prevent accidents.

12. During the production work of the extruder, the operator is not allowed to leave the post. If it is necessary to leave, the extruder should be stopped.

13. After parking, disassemble the screw, clean up the residue, and apply a layer of anti rust oil. If not in use temporarily, wrap it up and hang it vertically in a dry and ventilated place.

14. Extruders and accessories that have been discontinued for a long time and are not in use should be coated with anti rust oil and sealed at each inlet and outlet to prevent foreign objects from entering.

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