Operation of injection molding machine

 

 

 

Action procedure of injection molding machine

 

 

 

Nozzle forward → injection → pressure maintaining → pre molding → backward shrinking → nozzle backward → cooling → mold opening → ejection → needle withdrawing → door opening → door closing → mold closing → nozzle forward.

 

 

 

Injection molding machine operation items: injection molding machine operation items include control keyboard operation, electrical control cabinet operation and hydraulic system operation. The selection of injection process action, feeding action, injection pressure, injection speed, ejection type, monitoring of temperature, current and voltage of each section of the barrel, adjustment of injection pressure and back pressure, etc.

 

 

 

Action selection during injection:

 

 

 

Generally, the injection molding machine can be operated manually, semi-automatic and fully automatic.

 

 

 

Manual operation is in a production cycle, and each action is realized by the operator moving the operation switch. Generally, it is selected when the machine is tested and adjusted.

 

 

 

During semi-automatic operation, the machine can automatically complete a work cycle, but after each production cycle, the operator must open the safety door, remove the workpiece, and then close the safety door, the machine can continue the next cycle of production.

 

 

 

When fully automatic operation, the injection molding machine can automatically enter the next working cycle after completing the action of one working cycle. In the normal continuous working process, there is no need to stop for control and adjustment. However, it should be noted that if full-automatic operation is required, (1) do not open the safety door in the middle of the process, or the full-automatic operation will be interrupted; (2) feed materials in time; (3) if electric eye induction is selected, attention should be paid not to cover the electric eye.

 

 

 

In fact, it is usually necessary to stop the machine temporarily in the process of full-automatic operation, such as spraying mold release agent on the machine mould.

 

 

 

In normal production, semi-automatic or full-automatic operation is generally selected. At the beginning of operation, the operation mode (manual, semi-automatic or full-automatic) shall be selected according to the production needs, and the manual, semi-automatic or full-automatic switch shall be set accordingly.

 

 

 

The semi-automatic and full-automatic working procedures have been determined by the line itself. The operator only needs to change the speed and pressure, the length of time, the number of thimbles, etc. on the electric cabinet surface, so as not to cause confusion in the working procedures due to the operator's wrong key adjustment.

 

 

 

When each action in a cycle is not adjusted properly, manual operation shall be selected first. After confirming that each action is normal, semi-automatic or full-automatic operation shall be selected.