Vertical Injection Molding Machines - Troubleshooting Guide

The three main parts of a vertical injection molding machine are the mechanical mechanism, the electronic components and the hydraulic system. Troubleshooting is an important step and guide to help solve injection molding machine problems in a short period of time. As a professional Vertical Injection Molding Machine Manufacturer, we provide the 4 most common problems and solutions for injection molding machines. The most common problems are motor and hydraulic pump. When we discuss vertical injection molding machines below, you will have a better understanding of these problems and their solutions.

Injection Molding Machine

Injection Molding Machine Problems and Solutions 1: Motor or Pump Not Running

Motors and pumps are the key components of vertical injection molding machines. They are designed to convert electrical energy into mechanical energy. If the motor and pump do not work, or they do not respond to any tests or pumping does not occur, then the injection molding machine will not operate.

Possible cause: Blown power fuse.
Corrective Action: Check the fuse and replace with a new power fuse as needed.

Possible Cause: Poor electrical connection contact.
Corrective action: Please check that the wire connector is firmly connected to the terminal.

Possible cause: Circuit breaker tripped due to overload.
Corrective action: Turn off the machine for 5 to 10 minutes, then try to restart it. If the overload breaker trips again, check the voltage to determine the root cause of the overload.

Injection molding machine problem and solution 2: Motor or pump humming

If the motor or pump is humming, the failure is most likely caused by one of the following problems

Possible Cause: Poor connection to one of the three phases of the AC motor.
Corrective action: Check and make sure that all three phases of the motor are connected. Also make sure the power supply is well connected.

Injection molding machine problems and solutions 3: Machine malfunction cannot be restarted

If the Injection Molding Machine stops suddenly during operation, stop the machine immediately and check the relay.

Possible cause: Relay triggered by overload
Corrective action: The overload relay can be reset for a predetermined duration. After determining and correcting the cause of the overload, the motor can be restarted.

Injection molding machine problems and solutions 4: hydraulic pump has a strange sound

Possible cause: The oil filter is clogged.
Corrective action: Please clean the filter.

Possible cause: Crack or wear in the inner shaft of the pump.
Corrective measures: Please check and repair the pump.

Possible cause: The oil in the oil tank is below the required level for operation.
Corrective action: Please add oil.

I hope the above sharing will be helpful to you, in addition the company also provides Two Color Injection Molding Machine, if you need, please feel free to contact us!