Loose tool failure

The reason:

（1）Insufficient air pressure;

（2）Loose knife button poor contact or line break;

（3）Loose knife button PLC input address point burned out or no signal source;

（4）Loose knife relay does not operate;

（5）Loose knife solenoid valve is damaged;

（6）The amount of cutting is insufficient;

（7）The knife cylinder cup is short of oil;

（8）The punching cylinder is faulty.

Countermeasures：

（1）Check the air pressure until the air pressure reaches 6 kg plus or minus 1 kg;

（2）Replace the switch or check the line;

（3）Replace the PLC input port on the 1/0 board or check the PLC input signal source and modify the PLC program;

（4）Check whether the PLC output signal is/is not, whether the PLC output outlet is burned out, modify the PLC program;

（5）If the solenoid valve coil is burned out, replace the solenoid valve coil, the solenoid valve body leaks, the piston does not move, then replace the valve body;

（6）Adjust the cutting amount to loosen the knife smoothly;

（7）Add the hydraulic oil in the tool cylinder oil cup;

（8）The internal screw of the punching cylinder is loose and leaking, then the screw should be re-tightened and the sealing ring in the cylinder body should be replaced;

（9）If it cannot be repaired, replace the punching cylinder.