Hydraulic press machines can be used in forming, drawing, shaping, straightening, etc. Hydraulic oil is used to transfer energy, so there will be some vibration during operation. Some friends have misunderstandings, thinking that small hydraulic presses with small tonnage have large vibrations. However, large and heavy hydraulic presses will not vibrate due to their own tonnage. This is wrong. Following, we will discuss with you how to shock absorption in hydraulic press machine.
Since the sudden release of the large liquid storage capacity in the working cylinder of the hydraulic press machine will cause vibration, the backing plate can be thickened on the workbench and the storage capacity of the elastic compression energy of the liquid in the working cylinder can be reduced to reduce the vibration. On the workbench and lower die of the hydraulic press A certain thickness of backing plate is installed in between, and the working stroke of the moving beam is moved upward to reduce the volume of the upper chamber of the working cylinder when a sudden load is lost, which also reduces the stored liquid elastic energy in a disguised manner; in the four-column hydraulic machine, the hydraulic control check valve Install a one-way throttle valve on the oil control line, adjust the gap between the throttle valve and the hydraulic control flow, reduce the movement speed of the control piston, extend the opening time of the main valve of the hydraulic control one-way valve, and first open the main valve core. The small unloading valve then opens the main valve. Only by extending the pressure relief time can the effects of impact and vibration be eliminated; a series plunger is used to evenly divide the working cylinder and plunger into upper and lower sections. When the idle stroke is downward, the upper and lower plungers and moving beams are Descending together, the oil drain port of the upper cylinder will be closed after contacting the workpiece. The upper chamber of the lower cylinder enters the pressure oil chamber and drains oil. The plunger and moving beam are pushed down together. When the load is suddenly lost, the upper cylinder plunger remains stationary and the lower chamber The plunger generates a downward impulse. The plunger stroke of a hydraulic press does not require a lot of energy. The volume of the upper chamber of the lower cylinder is relatively small, so the elasticity of the liquid stored in the hydraulic press is relatively small, which reduces the impact vibration.
It is prohibited to overload the hydraulic press. Add lubrication as required before starting the machine each time. Check whether the high-pressure pump, pressure gauge, sealing ring and various valves are normal. The installation mold must be placed in the center of the backing plate. Check whether the mold is cracked. It is prohibited. Use it eccentrically. After each pressure test, it must be inspected and qualified before mass production. Regularly clean the hydraulic press machine workshop and surrounding environment.
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