ISSUES WITH PLASTIC PRESSER

Plastic injection molding machine presses life products such as plastic chairs, plastic spoons, plastic cups and plastic components. The causes of plastic injection machine damage help customers understand and minimize the damage. An Huy Hydraulic provides top repair and maintenance services and equipment!

Possible causes of failures in the hydraulic system

When troubleshooting hydraulic systems, it should be remembered that pumps generate fluid flows. However, there must be resistance to the fluid flow to create pressure. The following lists hydraulic system performance problems and their respective possible causes that should be sought in troubleshooting:

plastic-injection-machine

1.Pump makes loud noise

Air enters the pump inlet
Pump shaft and drive motor shaft are not aligned
Oil viscosity too high
The filter on the inlet is dirty
Safety valve opens and closes unstable
Pump is broken
Pump rotation speed is too high
The suction line is loose or damaged

2. Low or erratic pressure

Gas contained in hydraulic oil
The opening pressure of the safety valve is set too low
Leaks in hydraulic pipes
Pump is worn or not sealed
The actuator is worn or not sealed

3. No pressure

Pump rotates in the wrong direction
Hydraulic line interrupted
Safety valve is always open due to stuck
Pump shaft broken
The entire pump flow flows to the tank because the valve, valve seat or actuator is damaged

4. Actuator does not move

Pump is broken
Distribution valve (direction control valve) does not move
System pressure is too low
The actuator is damaged
Safety valve is always open due to stuck
Actuator load is too large
Non-return valve installed

5. Actuator moves slowly or erratically

There is gas in the system
Liquid viscosity is too high
Pump is worn or damaged
Pump speed too low
Is there a leak through the actuator or through the check valve
The flow control valves are dirty or damaged
The vent in the oil tank (usually the oil filler cap) is sealed
Oil level in tank is too low
One-way valve is broken
Safety valve opens and closes unstable

6. The hydraulic oil in the system is too hot

The cooling unit is clogged or damaged
The equipment in the system or pipeline is too small
Incorrect hydraulic oil
Safety valve must operate continuously
The system is overloaded
Hydraulic oil is dirty
Oil tank too small
Pump rotation speed is too fast
Ventilation section is blocked or the size is not enough

AN HUY AUTOMATIC JOINT STOCK COMPANY
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Address: 91 De La Thanh, O Cho Dua, Dong Da, Hanoi
Phone: 0977282045 – 0989257507
Website: https://anhuyautomatic.com.vn/
Email: anhuyhydraulic@gmail.com
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