Adjust the pressure of four column hydraulic press

The four column hydraulic press is driven by the motor through the transmission mechanism to exert pressure on the workpiece to complete the processing technology. The transmission mechanism is a belt or gear driven deceleration mechanism, and the working mechanism is divided into screw mechanism, crank connecting rod mechanism and hydraulic cylinder. The transmission mechanism of hydraulic press can not only complete various complex and complex movements, but also complete large-scale connection Stage speed regulation, so what should be paid attention to when the press adjusts the pressure?

First of all, the fragmentary pressure can not be higher than the pump pressure, unless there is an oil press with supercharging device, the actual pressure of the pump depends on the load size, which is automatically constituted rather than adjusted. The given pressure of the four column hydraulic press is the maximum pressure of normal tasks. Reduce the pressure of the relief valve, the middle position of the throttle valve, etc., close the pump outlet, regulate the relief valve, and the pump outlet pressure rises, Until the required value.

In the hydraulic speed control system of four column hydraulic press, there are two kinds of speed control circuits: stepless speed regulation circuit and stepwise speed regulation circuit. The stepless speed regulation circuit can be divided into saving speed regulation circuit and volume speed regulating circuit according to different speed regulating methods.