In the use of hydraulic paper cutter, to ensure that the pressure of the platen is large enough and stable pressure, is to ensure the quality of prints and paper cutting important factors. Pressure from the hydraulic system pressure, hydraulic shock is too large or too small, will affect the stability of the pressure. In order to ensure the quality of prints and paper cutting, so you need to understand the faults of the hydraulic system to ensure the stability of the hydraulic system.

1, the oil caused by the impact of the failure

① When the air into the system, it will produce local hydraulic shock, vibration and noise, damage to the pipeline. Avoid contact between the pressure oil and air, so make sure that all parts of the pipeline is well sealed, the return pipe should be inserted below the liquid level, additional exhaust device.

② High oil temperature can also cause hydraulic shock. So control the oil temperature, change the viscosity of the fluid.

2, the impact caused by the switching valve failure

Solenoid valve switching rapidly, no buffer, so that high pressure switching to almost zero pressure or zero pressure of the rapid rise to high pressure, resulting in impact. The use of reversing valves with damping or replacement time adjustable reversing valve, but also can be added back to the pressure pipe with a cone valve.

3, relief valve caused by the impact of failure

When the system pressure exceeds the relief value, the relief valve overflow, high pressure, opening and closing will appear transient hydrodynamic force, resulting in impact. Pilot-operated relief valve can be used.

4, the cylinder caused by the impact of failure

Cylinder in the stroke suddenly be braked, decelerated or stopped, resulting in impact. Can be added in the return oil back pressure valve.

Hydraulic cutter hydraulic system failure is diverse, here are only a few examples of common failures, hydraulic system failure and its own structure, system design and so on. So when the hydraulic system of the hydraulic paper cutter failure, according to the actual situation of the system, gradually exclude, reduce the damage of the hydraulic shock, improve the performance of the hydraulic paper cutter.