When using a hydraulic paper cutter, ensuring that the pressure of the paper press is sufficiently large and stable is an important factor to ensure the cutting quality of printed products and paper. The pressure of the paper presser comes from the impact of the hydraulic system. If the hydraulic pressure is too large or too small, it will affect the stability of the pressure. In order to ensure the cutting quality of printed products and paper, it is necessary to understand the failure of the hydraulic system and ensure the stability of the hydraulic system.
        1. Shock failure caused by oil
        ① When the air enters the system, local hydraulic shock will occur, vibration and noise will occur, and the pipeline will be damaged. Avoid contact between pressure oil and air, so ensure that all parts of the pipeline are well sealed, the oil return pipe should be inserted below the liquid level, and an exhaust device is added.
        ② Excessive oil temperature will also cause hydraulic shock. Therefore, it is necessary to control the oil temperature and change the oil with higher viscosity.
        2. Shock failure caused by the ventilation valve
        The switching of the solenoid valve is rapid, without buffering, so that the high pressure is switched to almost zero pressure or the zero pressure is quickly increased to high pressure, causing shock. The damping directional valve or the directional valve with adjustable replacement time can also be used, and the pressure tube can be added with a poppet valve.
        3. Shock failure caused by overflow valve
        When the system pressure exceeds the overflow value, the overflow valve will overflow, and under high pressure, transient hydraulic power will appear during opening and closing, causing shock. Pilot operated relief valve can be used.
        4. Shock failure caused by the oil cylinder
        The cylinder was suddenly braked, decelerated or stopped during the stroke, causing shock. A back pressure valve can be added on the return line.

        The hydraulic system of the hydraulic paper cutter has a variety of failures. Here are just a few common failures. The failure of the hydraulic system is also related to its own structure and system design. Therefore, when the hydraulic system of the hydraulic paper cutter fails, it is necessary to gradually eliminate the system according to the actual situation, reduce the damage of hydraulic shock, and improve the performance of the hydraulic paper cutter.