Overview of the working principle of the top cylinder of four-column hydraulic press

According to the long-term communication with the customer, we found that for the concept of the top-out cylinder of the four-column hydraulic press, most of the customers are not very familiar with it. Today, Guang Xiao Ji Xiao Bian and everyone understand the working principle and importance of the top-out cylinder.

When the process is flat, no ejector is required. However, when we process the molded product is trapped in the mold, when the operator wants to take out the product, it needs a part to push the product out of the mold. At this time, the ejector cylinder needs to be installed.

Four-column hydraulic press manufacturer--Dongguan Guangji Mechanical and Technical Engineer said that the effect of ejecting the cylinder is actually very simple. In short, it is to eject the workpiece from the die.

The first step of the working process is the ejection of the workpiece. When the master cylinder stops moving, the ejector button is pressed. The corresponding three electromagnets are energized. Two of the cartridge valves are opened and the hydraulic oil enters the top through the cartridge valve. Out of the lower chamber, the upper chamber oil flows back to the tank via the valve and the workpiece ejects.

The second step is that the ejector cylinder is retracted. Press the retract button first, the electromagnet is de-energized, several other electromagnets are energized, the cartridge valve is opened, the hydraulic fluid enters the upper chamber of the ejector cylinder through the valve, and the lower chamber fluid passes through the valve. Return to tank, top cylinder return. A circulatory system is then formed to maintain the continuous motion of the four-post hydraulic press.

However, the four-column hydraulic press with the ejector cylinder is more expensive than an ordinary four-column hydraulic press. Because the cylinder is a more important part of the four-column hydraulic press, adding a top-out cylinder will also increase the cost. The specific reference to different equipment, different tonnage, there is no uniform standard.