What is the Ejection Cylinder of the Four-Column Hydraulic Press Machine

Why do the four-column hydraulic press machine have an ejection cylinder? If you look closely, you will find that four-column hydraulic press machine has an ejection cylinder. This is because many times when we have processed a product that requires a part to pull the product out of the mold, it is necessary to install the ejection cylinder.

The function of the four-column hydraulic press machine ejection cylinder is very simple. In general, it is used for mold stripping. However, the price of a four-column hydraulic press machine equipped with an ejection cylinder is more expensive than that of a conventional four-column hydraulic press machine. Because the cylinder is a relatively important component on a four-column hydraulic press machine, adding a cylinder is costly.

How does the four-column hydraulic press machine ejection cylinder work? The first step of the working process of the ejection cylinder is the ejection of the workpiece. The specific realization is that when the main cylinder returns to the movement, the top button is pressed, and the corresponding three electromagnets are energized, and two of the cartridge valves are opened, two of the hydraulic oil enters the lower chamber of the ejection cylinder through the valve insertion valve, and the oil in the upper chamber flows back to the oil tank through the valve, and the workpiece is ejected. The second step is to retract the ejection cylinder, first press the retract button, the electromagnet loses power, the other electromagnets are energized, the cartridge valve is opened, the hydraulic oil enters the upper chamber of the ejecting cylinder through the valve, and the oil in the lower chamber passes through the valve. The valve flows back to the tank and ejects the cylinder back. When these steps are completed, the next step is started and a circulation system is formed to maintain the continuous movement of the four-column hydraulic press machine.

In contrast, the movement process of the four-column hydraulic press machine master cylinder is more complicated and the steps are more, but the working process of the ejection cylinder is very simple, two steps only, and the two can be said to be closely related.