Maintenance and Maintenance of Plastic Injection Molding Machines 2-1

1.4.2.4 Selection of injection speed General injection molding machine control board has a fast-slow knob to meet the injection speed requirements. In the hydraulic system there is a large flow pump and a small flow pump running oil supply at the same time. When the oil circuit is connected to a large flow, the injection molding machine can realize fast opening and closing of the mold, rapid injection, etc. When the hydraulic oil circuit only provides a small flow rate, various actions of the injection molding machine are performed slowly. 
1.4.2.5 Selection of ejector type There are two types of ejector ejector: mechanical ejector and hydraulic ejector, some of which are equipped with a pneumatic ejector system. The ejector ejector is provided with single and multiple ejectors. The eject action can be manual or automatic. 
The eject action is initiated by a die stop limit switch. The operator can achieve this by adjusting the push-out time button on the control cabinet as required. The speed and pressure of the ejector can also be controlled by the switch on the control cabinet surface. The distance between the front and the back of the ejector movement is determined by the travel switch.