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How to shock the four-column hydraulic press

by:WORLD     2022-10-22
Shanghai WORLD Press Machine hydraulic press manufacturer specializes in the production of four-column hydraulic presses, single-column hydraulic presses, bow hydraulic presses, hydraulic presses, slide hydraulic presses, rotary hydraulic presses, C-type hydraulic presses, multi-station hydraulic presses, small hydraulic presses, hydraulic presses, powder forming hydraulic presses, metal forming hydraulic presses, stamping Hydraulic presses, hydraulic presses and other hydraulic presses. Today, Shanghai WORLD Press Machine, a Shanghai hydraulic press manufacturer, would like to talk to you about the shock absorption of four-column hydraulic presses?

Thicken the backing plate on the working table: As we all know, the main reason for the vibration of the four-column hydraulic press is the sudden release of the large energy stored in the liquid in the working cylinder. Therefore, the way to deal with this problem is to try to increase the storage capacity of the elastic compression energy of the liquid in the working cylinder. Therefore, a pad of a certain thickness is added between the working table of the four-column hydraulic press and the lower die to move the working stroke of the moving beam upward, thereby increasing the volume of the upper cavity of the working cylinder when the load suddenly loses, and correspondingly increasing the stored liquid bomb functional power.

The working cylinder and the plunger of the tandem plunger hydraulic press are divided into upper and lower sections. When the material breaks suddenly and loses load, the upper cylinder plunger will not move, only the lower cavity plunger can have a downward impact, but because the lower cylinder only To meet the requirements of cutting the material, the stroke of the plunger does not need to be large, and the volume of the upper chamber of the lower cylinder can also be relatively small, so the function of the stored liquid bomb is relatively small, and the impact vibration is correspondingly increased.

A one-way throttle valve is added to the hydraulic control oil circuit of the hydraulic control check valve of the four-column hydraulic press. After adjusting the throttle valve, the clearance of the hydraulic control flow is controlled to reduce the movement speed of the control piston, which extends the hydraulic control single When the main valve of the direction valve is closed, the small unloading valve on the main spool is first opened, and then the main valve is opened, and the pressure relief time can be extended, which can eliminate vibration, impact and noise.

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