Why four column hydraulic presses have ejector cylinders? Careful observation will find that most four column hydraulic press machines have ejector cylinders. Then, why do four column hydraulic press machine has ejector cylinders? This is because many times we have processed products that require one The component ejects the product from the mold, and at this time, an ejection cylinder is required.

According to the conclusion of the engineers of the DELS hydraulic press machinery and equipment, the function of the ejector cylinder is very simple. Generally speaking, it is used for demolding and ejecting the workpiece from the cavity. However, the price of a four-column hydraulic press equipped with an ejector cylinder is more expensive than an ordinary four-column hydraulic press. Because the oil cylinder is a relatively important part of the four-column hydraulic press, adding an oil cylinder is costly.

How does the ejector cylinder of the four-column hydraulic press work? The first step of the ejection cylinder is the ejection of the workpiece. The specific realization is that when the main cylinder stops moving, the ejection button is pressed, and the corresponding 3 electromagnets are energized. , 2 of the cartridge valves are opened, the 2 hydraulic oil enters the lower cavity of the ejector cylinder through the valve cartridge valve, the upper cavity oil flows back to the oil tank through the valve, and the workpiece is ejected. The second step is to retract the ejector cylinder. Press the back button first, the electromagnet is de-energized, and the other electromagnets are energized. The valve flows back to the tank and the ejector cylinder returns. When these steps are completed, proceed to the next step, and then form a circulatory system to maintain the continuous movement of the four-column hydraulic press.

In contrast, the movement process of the main cylinder of a four-column hydraulic press is more complicated and there are many steps, but the working process of the ejection cylinder is very simple, only two steps, and the movement of the ejection cylinder occurs when the movement of the main cylinder is completed. After that, the work process of ejecting the cylinder started immediately, and the two are closely related.