As a plastic injection molding machine`s operator. We will see the Injection Molding Machine Error Codes more or less for long time operation. Below we have collected the most seen error codes and troubleshooting solutions for main injection molding machines controllers. We just hope the below information is helpful to improve your daily operations during plastic injection molding.

Injection Molding Machine`s Error Codes and Troubleshooting Solutions-Injection-Molding-Machines-supplier-in-China

Treatment of common faults of injection molding machine:

1. The oil pump motor and oil pump start, but no pressure.

A). The proportional valve wiring on the oil pump is loose or the coil is burned out ——> Check whether the proportional pressure valve is energized.

B). Impurities block the oil port of the proportional pressure valve on the oil pump ——> Remove the proportional pressure valve to remove the impurities.

C). The pressure oil is not clean, and the debris accumulates on the surface of the oil filter, preventing the pressure oil from entering the pump – clean the oil filter and replace the pressure device.

D). Oil leaks inside the oil pump, which is caused by excessive use, internal wear or unclean pressure oil -> Repair or replace the oil pump.

E). Oil leakage from the oil pump, oil pipes and joints ——> Eliminate the leakage.

F). The oil system is stuck ——> Check whether the oil system spool moves normally.

2. The temperature of the melt cylinder cannot be controlled

A). The temperature cannot be controlled, check whether the contacts of the electric heating contactor are stuck, and whether the wires of the thermocouple are loose or damaged.

B). If the temperature cannot rise, check whether the electric heating air switch in the electric box is adjusted, whether the contactor and relay are closed, whether there is voltage, whether the insurance is burned out, and whether the heating ring is burned out.

C). Whether the thermometer is damaged.

3. No mode locking

A). Whether the front safety door has been closed, whether the limiter of the safety door has been pressed and released by the safety door, and whether the wiring is loose or damaged.

B). The coil of the clamping solenoid may have moved into the valve, stuck with the spool –> Clean or replace the clamping and opening control valve.

C). The directional valve may not reset -> Clean the directional valve.

D). The thimble cannot be returned to reset ——> Check whether the thimble moves normally.

E). Check whether the origin of the computer controller for mold clamping and mold opening electronic ruler has been changed, and whether the mold clamping position has been terminated.

F). Check whether the pressure gauge operates.

G). Press the mode-locking key to see if the display screen shows the mode-locking signal or other signals and alarms.

H). Check whether the clamping position, speed and pressure are properly adjusted.

I ). Check whether the clamping piston rod is broken.

4. No plastic was injected or plastics was not shot out of barrel

A). The coil of the injection solenoid may be burnt, or foreign objects enter the directional valve and move with the spool stuck –> Clean or replace the injection valve.

B). The pressure is too low ——> increase the injection pressure.

C). The temperature of injection molding is too low – adjust the thermometer to raise the temperature to the required point. If the temperature cannot be raised by adjusting the thermometer, check whether the electric heating tube and fuse are burnt or loose. Replace in time. 4. The connection of the valve opening system of the injection combination is loose or has poor contact ——> Connect the combination switch wire properly.

5. The screw rotates, but the melt plastics does not enter the barrel

A). Sol back pressure is too high, the back pressure valve is damaged or improperly adjusted ——> Adjust or replace the sol back pressure valve.

B). Insufficient water transport, so that the temperature is too high, so that the glue particles are blocked when entering the screw ——> Adjust the water transport amount, and take out the glued glue block. See if the water ring is blocked or the water is not cooled.

C). There is no material in the drop bucket ——> Add material.

D). Whether the temperature of the melt barrel is too high.

6. The launcher does not move

A). The moving limit travel switch of the shooting platform is pressed by the adjustment striker ——> Adjust.

B). The coil of the solenoid valve for the moving platform may be burnt or foreign objects enter the directional valve and the valve core moves –> Clean or replace the solenoid valve.

C). Check the forward speed of the shooting platform and whether the pressure is properly adjusted.

D). Check whether the 1/0 board and the output voltage (DC+24V) of the directional valve are normal. If not, check whether the corresponding output transistor or relay is damaged.

E). Press the radio button to check whether the computer screen displays the pre-launch signal, or other signals and alarms.

F). Check whether the pressure gauge has movement.

7. Mould opening makes a sound

A). There is no brake or brake failure of the mold opening stroke switch ——> Adjust or replace the solenoid valve.

B). The fixing screw of the slow speed solenoid valve is loosened, or the valve core is stuck ——> Adjust to a significantly slow speed.

8. Pressure oil temperature is too high

A). The pressure of the oil pump is too high ——> It should be adjusted to the demand pressure of the rubber compound.

B). The oil pump is damaged and the pressure oil concentration is too low ——> Check the oil pump and oil quality.

C). Insufficient amount of pressure oil ——> Increase the amount of pressure oil.

D). The cooling system is faulty and the water supply is insufficient ——> Repair the cooling system.

9. Automatic action failure

A). The electric eye is out of order, the fixing screw is loose or the light is not condensed. ——> Make the electronic sensor work again.

B). The time system is out of order or damaged ——> Adjust or replace the time system.

C). The heating element is damaged ——> replace it.

D). Poor or damaged thermocouple wiring ——> Tighten or replace.

E). Thermometer damaged ——> replace the thermometer

F). Semi-automatic failure: The semi-automatic cycle is realized by the stroke of the mechanical action, triggering the switch system and time system of each electrical appliance, sending electrical signals, and controlling the oil system. If it is in the manual state, every action is normal, but semi-automatic If it fails, most of it is because the electrical switch and time switch do not send a signal. First, observe the failure of the semi-automatic action at that stage, and find out the corresponding control element according to the “action cycle diagram”, and check and solve it.

Injection Molding Machine Error codes/Alarms with Techmation Controller

Toshiba / Shibaura Injection Molding Machine Error codes/Alarms

Chen Hsong Injection Molding Machine Error codes and troubleshooting

Engel injection molding machine error codes & troubleshooting

Krauss Maffei Injection Molding Machine Error codes & troubleshooting

Cincinnati Milacron Injection Molding Machine Error codes/Alarms

Husky Injection Molding Machine Error codes & troubleshooting

Haitian Injection Molding Machine Error codes & troubleshooting

Passwords for Injection Molding Machine Brands & Computer Systems


Contact Us for injection machine Error Codes & Maintanance Problems

    * We never spams. Your information is SAFE with us.

    By on January 9, 2022   /   How & What`s, Most Popular Post