During the operation of slitting machines, various faults may occur. These faults can mainly be attributed to two aspects: the quality problems of the equipment itself and improper operation by personnel. The following are some common faults of slitting machines and their solutions:
Knife malfunction
1. Fault phenomenon: The cutter is not sharp enough, resulting in uneven cutting or incomplete cutting.
Solution: Check if the cutting edge of the cutter is blunt. If so, a new cutter should be replaced in a timely manner.
2. Fault phenomenon: The cutter does not swing flexibly, affecting the cutting effect.
Solution: Repair the swing mechanism of the cutter to ensure it can move flexibly. At the same time, check whether the cutter has deviated from the preset position of the cutter shaft and whether the screws that fix the cutter are loose, and make corresponding adjustments or tighten them.
What are the common faults of slitting machines and their solutions
Second, the equipment cannot rotate normally
1. Fault phenomenon: The equipment cannot be started or rotates poorly.
Solution: When the equipment is overloaded and the frequency converter gives an overcurrent alarm, promptly turn off the main power supply of the electrical control system and restart the slitting machine. Check whether the gears of the transmission are damaged. If there is any damage, first turn off the main power supply, then rotate the uncoiler by hand to observe if there is any jamming, and replace the damaged components in time.
Iii. Malfunction of the deviation correction device
2. Fault phenomenon: The deviation correction device fails to operate normally, causing the material to deviate.
Solution: Check whether the adjustment method and working state selection of the photoelectric eye are correct, and readjust it as required by the manual. If the color difference between the tracked line or edge and the surrounding materials is not obvious, the color difference contrast should be increased so that the deviation correction device can accurately identify it.
What are the common faults of slitting machines and their solutions
Iv. Faults in winding and unwinding
1. Fault phenomenon: Insufficient winding tension causes the winding film material to become loose.
Solution: Adjust the voltage of the upper and lower tension controllers of the magnetic powder clutch. If the winding tension is still insufficient when the voltage is set very high, it may be that the output torque of the magnetic powder clutch is not enough. At this time, the magnetic powder clutch should be disassembled and an appropriate amount of new magnetic powder should be added to it.
2. Fault phenomenon: The unwinding swing arm cannot lift the material normally.
Solution: Check whether there are any abnormalities in the air pressure system (such as air pumps, control valves, etc.). If any damage is found, replace or repair it in a timely manner. If it is not due to air pressure, it might be a problem with the swing arm bearing. A new bearing needs to be replaced or the original one lubricated.
Five. Decline in cutting accuracy
1. Fault phenomenon: The cutting accuracy is not as good as before, and deviation occurs.
Solution: Check if the cutter is worn or installed incorrectly. If there is a problem, replace the cutter or reinstall it. Adjust the gap between the cutting knife and the upper cutting roller to the correct position.
What are the common faults of slitting machines and their solutions
Six. The equipment operates with loud noise and obvious vibration
1. Fault phenomenon: The equipment operates with loud noise and obvious vibration.
Solution: Inspect and tighten the screws and connecting parts of all components of the equipment to prevent loosening. Check whether there are any foreign objects or damaged parts inside the equipment. If so, clean or replace them in time.
Seven. The machine fails to start or the electrical components fail
1. Fault phenomenon: The machine fails to start or the electrical components fail.
Solution: Check whether electrical components such as switches, fuses, and power supplies are damaged or have poor contact. If so, replace or repair them. Check whether the electrical control system is working properly. If there is any abnormality, carry out debugging or repair.
What are the common faults of slitting machines and their solutions
Viii. Uneven winding
8. Fault phenomenon: The automatic slitting machine has uneven winding.
Solution: Replace the paper core with the required inner diameter. In addition, during the winding process, winding pressure rollers should be used to avoid the problem of uneven winding.
Ix. Inaccurate meters
1. Fault phenomenon: The meter is inaccurate.
Solution: The two wheels of the counting wheel can simultaneously touch the feeding rubber roller and make a mark on the counting wheel. If you count manually for 5 turns, count 1 meter; otherwise, replace the counting wheel.
What are the common faults of slitting machines and their solutions
X. Issues with semi-finished products
1. Fault phenomenon: The middle part of the semi-finished product is loose.
Solution: Adjust the bow roller to ensure a flat support, or increase the tension of the release reel and use a knife tube to compact the base material.
2. Fault phenomenon: Wrinkles appear when the semi-finished product is wound.
Solution: Appropriately increase the pressure of the tensioning cylinder.
To ensure the normal operation of the equipment and extend its service life, it is recommended to carry out regular maintenance and upkeep of the equipment. Meanwhile, operators should receive professional training and be familiar with the operation norms and safety precautions of the equipment to reduce the occurrence of malfunctions.
