Mold closing is to close the mold with huge mechanical thrust to resist the huge opening force of the mold caused by the high-pressure injection of molten plastic and filling the mold in the injection molding process. Close the safety door, each travel switch gives a signal, and the mold closing action starts immediately.—carrier tape forming machine

First, the moving template is started at a slow speed. After a short distance, the pressure block of the control rod that originally pressed the slow switch disengages, and the movable plate rotates to move forward quickly. —-carrier tape forming machine

When moving to close to the mold closing end point, the pressing rod at the other end of the control rod presses the slow switch again, and at this time, the movable plate moves forward at a slow speed and low pressure. In the process of low-pressure mold closing, if there is no obstacle between the molds, it can be closed smoothly until the high-voltage switch is pressed. Turning to high-voltage is to straighten the machine hinge to complete the mold closing action. This distance is very short, generally only 0.3 ~ 1.0mm. Just after turning to high voltage, it touches the mold closing termination limit switch. —carrier tape forming machine

At this time, the action stops and the mold closing process ends. The clamping structure of injection molding machine has full hydraulic type and mechanical connecting rod type. No matter what kind of structure, the clamping force is implemented by the complete straightening of the connecting rod. The straightening process of the connecting rod is not only the process of the extension of the movable plate and the tail plate, but also the process of the tension of the four pull rods. The clamping force can be known from the highest rise of the oil pressure gauge at the moment of clamping the die. If the clamping force is large, the highest value of the oil pressure gauge will be high, otherwise it will be low. Smaller injection molding machines do not have a clamping oil pressure gauge. At this time, it is necessary to judge whether the mold is really tight according to the straightening of the connecting rod. If the connecting rod of an injection molding machine is easily straightened during mold closing, or “almost” fails to straighten, or one of several connecting rods is not completely straightened, mold expansion will occur during injection molding, and the parts will have flash or other problems.–carrier tape forming machine