Processing method of mold clamping of injection molding machine
Solutions to 14 problems in the clamping part of the injection molding machine!
(1) No mode locking
Approach:
1): Check the travel switch in front of the safety door and repair it.
2): Check the 24V5A power supply in the electrical box, and replace the fuse and power supply box.
3): Check if the valve core is stuck and clean the valve core.
4): Check whether the I/O board has output and whether the solenoid valve is electrified.
5): Check whether the hydraulic safety switch is pressed and whether the mechanical lock lever baffle is opened.
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(2) Twisting sound of mold opening and closing machine
Approach:
1) Check whether the lubricating oil pipe is disconnected, if so, the oil pipe must be reconnected.
2) If the amount of lubricating oil is small, increase the amount of lubricating oil. It is recommended that 50 molds be oiled once or add enough lubricating oil manually.
3) The clamping force is large, check whether the mold needs a large clamping force, and reduce the clamping force.
4) The current of the amplifier board is chaotic, check whether the current parameters meet the acceptance criteria, and re-adjust the current value.
5) If the parallelism is out of tolerance, use a dial indicator to check whether the parallelism of the first and second plates is greater than the acceptance standard; adjust the parallelism.
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(3) Wait a few seconds before opening the mold
Approach:
1): The starting speed is slow, check whether the screw damping is too large, and adjust the screw damping hole.
2): The middle hole of the damping screw is too large, check whether the damping of the Y hole screw is too large, and replace the damping screw with a thin central hole.
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(4) Crawling of mold opening and locking
Approach:
1) The second plate guide rail and the Colin column are worn out, check the second plate guide rail and Colin column, replace the second plate copper sleeve, Colin column, and add lubricating oil.
2) Improper adjustment of the speed and pressure of mold opening and locking. When the flow rate is set to 20 and the pressure is 99, the second mold clamping plate should not crawl. Adjust the flow proportional valve hole, or the pilot valve hole, and adjust the linear current value of the proportional valve.
3) There is air and exhaust in the pipeline and cylinder.
(5) The mold can not be opened
Approach:
1) Increase the speed of mold opening and locking. If the pressure flow is too small and not adjusted properly, check the mold opening and locking speed and whether the pressure is appropriate. Increase the mold opening and locking pressure and speed.
2) The zero position of the clamping electronic scale is changed, check whether the clamping and straightening machine ends at the zero position after twisting, and re-adjust the zero position of the electronic scale.
3) Check whether the hinge is reversed.
(6) In automatic production, the mold adjustment will become tighter or looser
Approach:
1): There is leakage in the solenoid valve for mold adjustment, check whether the solenoid valve is "O" type, model 4WE6E or 0810092101, replace the solenoid valve or whether the solenoid valve is powered by 24V when it is not working.
2): Check whether there is a mold adjustment action when manually playing other actions, and see if the valve is stuck.
(7) When other actions are working after clamping the mold, the mold is fully automatic and slowly opened.
Approach:
1): The oil plate is leaking, check or replace the express clamping valve, and replace the oil plate.
2): The mold opening valve leaks, start the oil pump and end the mold clamping, press the injection table or the glue injection action, whether the second plate moves back, and replace the mold opening oil valve. It is normal to open and lock the mold and not move.
(8) Only the mold opening action is performed during mold clamping
Approach:
1): connect the wrong wire, check whether there is 24VDC to the valve, check the wire and connect the wire.
2): The valve is stuck or the wrong valve core is installed, check whether the valve core is wrongly installed or blocked, re-install the valve core or clean it. Under normal circumstances, the action of opening and locking the mold is not moving.
(9) Poor mold clamping
Approach:
1) The A and B holes are not properly adjusted. When the system flow rate is set to 20 and the pressure is 99, observe whether the clamping action is crawling, and readjust or replace the valve.
2) There is air in the oil circuit, listen to the sound of air in the oil circuit, check whether there are air bubbles in the oil, and need to exhaust.
3) The ramp-up and ramp-down adjustment of the amplifying board is improper, observe whether the current value of the ammeter is proportional to the rise and fall or whether it is proportional to the rotational speed, and adjust the amplifying board.
(10) Clamping can not afford high pressure, exceeding the stroke
Approach:
1) The limit switch exceeds the limit, check whether the mold adjustment is appropriate, adjust the appropriate mold thickness; check whether the motor is in normal state.
2) If the hydraulic limit exceeds the stroke, whether the stroke position of the electronic ruler is appropriate, check whether the mold adjustment is appropriate, and adjust the mold forward appropriately.
(11) Manual with mold opening termination, semi-automatic without mold opening termination
Approach:
1) If the mold opening valve leaks, move the shooting table manually, observe whether the second plate moves backwards, and replace the mold opening valve.
2) Check the large stroke and pressure flow of the electronic ruler.
(12) No thimble action
Approach:
1) The thimble limit switch is broken, use a multimeter to check whether the 24V proximity switch is on. Replace the thimble limit switch.
2) When the valve is stuck, use a hexagonal key to press the thimble valve core to see if it can move, and clean the pressure valve.
3) The limit rod of the thimble is broken. After the machine stops, take out the limit rod by hand and replace the limit rod.
4) The thimble switch is short-circuited, use a multimeter to check the 0 voltage of the thimble switch to the ground, and replace the thimble switch.
5) The position of the electronic ruler is not set properly.
(13) Thimble is out of control when semi-automatic
Approach:
1): The thimble board is broken, check whether the circuit is normal, the normal voltage is DV24V. Repair the thimble plate.
2): The line is broken, check the connection line of the switch and the connection line of the I/O board in an all-round way. Check wiring and rewire.
3): Check whether the mold is out of position.
4): Whether the oil cylinder piston rod sealing ring is damaged.
(14) Loud sound when opening the mold
Approach:
1): The proportional linearity is poor, the pressure flow at the opening and closing time position is poorly adjusted, check the ramp up and ramp down in the parameters, and adjust the ramp up ramp down in the parameters.
2): The clamping machine hinge is poorly lubricated, check the Collin column, the second plate sliding foot, and the machine hinge lubrication, increase the lubrication, and increase the number of oiling.
3): The clamping force of the mold is too large, check the clamping force when the mold is stressed, and reduce the clamping force according to the user's product. Check that the time position is appropriate.
4): The deviation of the parallelism of the head and the second plate, check the parallelism of the head and the second plate. Adjust the parallel error of the second board and the head board.
5): The setting position of slow speed and fast mold opening is too small, and the speed is too fast. Check whether the position of slow mold opening to fast mold opening is appropriate, and whether the slow mold opening speed is too fast. Lengthen the slow mold opening position and reduce the slow mold opening speed.
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Processing method of mold clamping of injection molding machine
