Analysis and Solutions for Common Faults of the Paper Box Compressive Testing Machine System
一、 The lower transmission chain of the cardboard compression testing machine has worn and elongated, which affects the normal operation of the main unit. After long-term use, the chain shaft or the hole of the chain plate has worn, causing the chain circumference to increase. Adjusting the position of the tensioning wheel results in an excessive parallelism error between the upper and lower pressure plates, which affects the test accuracy.
1.The elongation of the chain causes a relative angular displacement between the two transmission screws.
Adjust the position of the chain tensioning wheel
2. The stress-strain relationship of the four tension springs at the upper part of the upper pressure plate has changed:
Adjust the compression length of the spring
二、General Fault Phenomena, Causes Analysis, Elimination and Maintenance of the Control System of the Paper Box Compressive Strength Testing Machine
1.No display, malfunctioning buttons, blown fuse, damaged power switch, poor contact or loose connection of power cord. Replace the fuse, replace the power switch, and inspect and repair the power cord.
2. After power-on or during use, the display is erratic, the buttons do not function, and the system freezes. Press the reset button or turn off the power supply and then restart the machine.
3. Pressing the print button does not activate the printer.
. The connection of the print head is loose or has poor contact. . Check the printing circuitry.
4. Print head damaged
Replace the print head
5. The monitor shows no display or displays randomly, but all other functions of the testing machine are normal.
The connection of the monitor is loose or not properly connected. Check the wiring.
6. Display screen is damaged.
Replace the monitor
7. Display is normal. Some buttons do not function. The buttons are damaged and need to be replaced.
8. The display is normal. If the motor's operating state is abnormal, check the motor control circuit for faults. Identify the problem and take appropriate measures (handled by professionals).
