Common faults and their solutions during the operation of the gluing box machine are as follows:
I. Feeding Blanks
The paper feeding mechanism of the fully automatic gluing box machine uses friction-type paper feeding with rotating belts. Cardboards are inclined and stacked on three rubber belts, and the bottommost cardboard is conveyed forward under the action of friction when the belts rotate. The occurrence of feeding blanks is often due to insufficient friction, and the following reasons may contribute to this issue.
1. Issues with the cardboard itself, such as warping or unevenness, excessive paper dust on the cardboard.
Solution: Before manual paper feeding, straighten the cardboard and remove any warping. Shake off the paper dust from the cardboard.
2. Lightweight cardboard, insufficient height of the paper stack (operators did not add cardboard in a timely manner), resulting in inadequate friction between the cardboard and the belts.
Solution: Add cardboard promptly based on the height of the paper stack.
3. Low vibration frequency of the vibrator, leading to a small vibration amplitude transmitted to the cardboard.
Solution: Adjust the appropriate vibration frequency based on the quantity and size of the cardboard.
4. Excessive angle of the rear support frame, causing poor contact between the cardboard and the transmission belts.
Solution: Adjust the angle of the rear support frame appropriately, usually between 15° and 30°.
5. Transmission belts slipping due to aging or excessive paper dust on the surface, causing slippage.
Solution: Perform deburring on the transmission belts to increase surface roughness or replace the belts. Alternatively, add a jet device beside the belts to blow away paper dust.
6. Adjusting the height of the paper stop tongue too low, obstructing cardboard transportation.
Solution: Adjust the height of the paper stop tongue according to the thickness of the cardboard, generally 1.5 times the cardboard thickness.
II. Multiple Feeding
Excessive feeding of cardboard is mainly caused by excessive friction between the cardboard and the transmission belts, opposite to the occurrence of feeding blanks. Refer to the causes of feeding blanks for specific reasons.
III. Skewed Feeding
After the cardboard leaves the paper feeding mechanism, the inconsistent friction between the two sets of transmission belts and the cardboard leads to skewing during transportation. The following reasons contribute to this phenomenon.
1. Unequal tension of the two sets of belts on the gluing box machine, causing uneven force on both ends of the cardboard and resulting in skewing.
Solution: Use hexagonal adjustment to change the eccentric height, thereby adjusting the tension of the corresponding belts.
2. The locking mechanism of the upper and lower belts is not pressed down or not in place (common among beginners), resulting in excessive spacing between the upper and lower belts.
Solution: Follow proper procedures and carefully check if the locking mechanisms are all in place.
3. Transmission belts slip or detach due to aging or other reasons.
Solution: Thoroughly inspect the locking mechanisms of the belts, reduce the speed of the gluing box machine if necessary, and replace aged belts promptly.
