What are the daily maintenance and long-term maintenance of the injection molding machine？

Daily maintenance (daily inspection)
1. Check whether the screws in the mold inserts, cylinders, pressure plates, joints and other parts are loose or missing.
2. Check whether each plug-in core wire, travel switch, micro switch, position ruler, emergency stop button, etc. are working properly.
3. Check whether the oil level of the machine is above the midline, whether the oil quality is good, and whether the oil temperature is normal. (Available between 30~45℃, 5~55℃)
4. Check for leaks or blockages in the oil cylinders, oil pipes, action seal connections, etc. of various water circuits and oil circuits.
5. Check whether there is enough lubricating oil in each lubrication point, oil pipe and centralized lubrication box, and whether it can be lubricated normally, and whether there are breaks and blockages everywhere.
6. Check whether there is any peculiar smell or noise in the distribution box, whether the components and wires are overheated, coking, falling off, or whether there is dust or foreign matter, etc.
7. Check whether the ventilation and filtering devices in the distribution box work normally and whether they can ensure good heat dissipation.
8. Check whether there are abnormal noises, overheating, etc. in the actions of various parts (main motor, demolding motor, oil motor, oil pump, oil
Cylinder and various mechanical transmission parts, etc.). Ensure good lubrication and heat dissipation.
9. Check the actions of each part (opening and closing of the mold, pulling the core, pushing forward and retreating, seat forward and backward, injection, pre-molding, plastic drawing, mold adjustment, etc.)
Whether the pressure, speed, position, time, etc. are reasonable, whether the movement is smooth, whether there is violent collision, and whether the work is reliable and normal.
10. Check whether each safety protection device operates reliably and is used normally. (The mechanical safety lever must be adjusted after each mold change)
11. Check whether the thermocouple and heating coil are working properly.
12. Check whether each machine has any displacement phenomenon.

Medium and long-term maintenance
1. Clean the distribution box and machine oil and water stains once a week.
2. Clean up or replace cooling water pipes, plug-in core wires and oil pipes every week.
3. Thoroughly clean and organize workshop tools, material racks, mold area and all machines once a week.
4. Check whether there is a magnetic frame (return material) and filter screen (powder material) in the lower hopper every week.
5. Check and clean each oil filter, bypass filter, oil suction filter, ventilation filter, filter screen and other filtering devices monthly.
6. Check every month whether the electrical components such as AC contactors are operating normally, whether there is any peculiar smell, and whether there is vibration during work.
7. Drain the oil and water under the switch mold chassis every month to prevent spills.
8. Every quarter, check whether the power supply voltage is too low or too high. Whether the power cord is damaged, whether the grounding is intact, and whether the connectors are loose.
9. Check the quality of hydraulic oil every quarter.
10. Thoroughly clean the oil cooler once every six months and clean the waterway.
11. Lubrication points should be lubricated once every six months. (Such as movable parts such as mold adjustment, movable plate, movable template, pre-plasticized oil motor, and entire shift seat)
12. Check every year whether the wiring of each part, the components are aging, and whether the insulation is good.
13. Check every year whether the seals, high and low pressure oil pipes are aging and worn, and deal with and replace them at any time.
14. Clean all solenoid valves with kerosene or diesel every year to ensure the normal operation of the machine.
15. Check the mechanical level, the parallelism of the four pillars, and the tightness of the sliding feet of the bottom plate every year, and make adjustments.
16. Check every year whether the operation of the main motor, oil pump, and oil motor is abnormal.

Other
1. Unused valves, nozzles, front barrels, screws, etc. must be smeared with appropriate amount of butter before storage.
2. When the front barrel and nozzle are installed on the machine, the screws must be wiped with high temperature resistant molybdenum disulfide to prevent rust.
3. When the machine is not used for a long time (or when the machine is stopped in winter), the cooling water in the cooling water circuit must be drained.
And evenly apply anti-rust agent, butter, etc. to each part of the machine (such as guide rod, etc.). (The next time you use it, you should use an appropriate neutral solvent to wipe it off)
4. For machines that have been parked for a long time, the screw and barrel must be cleaned with PS, PP, or PE materials before shutting down to prevent corrosion.