Introduction of three buffer equipment of four-column hydraulic press

Four-column hydraulic press with liquid as a medium for energy transfer, suitable for metal material stretching, bending, punching and cold extrusion and other processes, but also suitable for proofreading, press assembly, powder products, abrasive products, limited molding and plastic products, insulation materials limited molding, etc., already have energy to have a cooperative buffer equipment to ensure stable operation.

1, the four-column hydraulic press uses the gap buffer equipment, the buffer braking force is large at the beginning of the buffer, but it will soon fall, it has no effect at all, the buffer effect is poor, and the buffer pressure can not be adjusted, the biggest advantage is the simple structure, the general products in the hydraulic cylinder more use the gap buffer equipment.

2, adjustable buffer equipment, when the hydraulic buffer plunger into the inner hole of the cylinder head, the plunger blocks the oil return port, the buffer pressure in the oil return chamber of the saving valve increases the piston deceleration, the buffer effect is very poor, when the piston reverse movement of the pressure oil through the check valve quickly into the hydraulic cylinder, the piston will not start slowly due to insufficient thrust. Adjustable buffer equipment can adjust the size of the opening of the saving valve according to the load situation, and change the size of the buffer pressure, so the application scale of the hydraulic press is more extensive.

3, variable saving type buffer equipment, in the four-column hydraulic press buffer plunger open triangular saving groove, saving area with the increase of buffer stroke and gradually reduced, in the buffering process can actively change the size of the saving port, so the buffering effect uniform impact pressure is small, the defect is more complex structure.