Machine head and Y guide rail-Common faults of automatic cutting machine and their solutions

X. Failure phenomenon: the grinding is less than 4 mm.

Cause of failure:

1. The grinding buffer seat is in front;

2. The grinding wheel device falls off downward, so it can't be well matched with the cutter groove block during grinding;

3. Insufficient pressure or stroke of grinding cylinder;

4. The position of grindstone and cutter head column is too large;

5. The axis of grinding wheel is not parallel to the column.

Solution:

1. Check whether the position of grinding buffer seat is normal by pushing the grinding wheel by hand;

2. Push the grinding wheel by hand to grind to see if the protruding grinding surface of the grinding wheel can normally enter the groove of the cutter block;

3. Check whether the grinding stroke of the grinding cylinder is sufficient;

4. Re-adjust the gap between the grindstone and the column.

XI. Failure phenomenon: the sharpening effect is not good.

Cause of failure:

1. The grinding wheel position has changed;

2. The grinding wheel needs to be replaced when it is used up;

3. The groove block of the cutter is seriously worn, which makes the position of the cutter unstable during grinding;

4. The cutter head linear bearing is seriously worn or the cutter head column is seriously worn, which leads to the instability of the cutter head.

Solution:

1. Because the position of the vibrating grinding wheel device has changed, the sharpening is readjusted;

2. Replace the new grinding wheel;

3. Replace the cutter groove block;

4. Replace the cutter head linear bearing or turn the cutter head column in a different direction.

XII. Failure phenomenon: broken knife

Cause of failure:

1. The tool is used too narrowly;

2. The plano-convex grinding wheel is seriously worn or blocked by foreign objects;

3. The clearance adjustment of the flat grinding wheel is too tight, the position of the cutter groove block is abnormal or the screw of the cutter groove block is loose;

4. Poor sharpening;

5. The cutting speed is too fast and the degree of dissolution is set too low;

6. Too many layers of fabric;

7. The conversion speed is too fast;

8. The knife is not tightened;

9. The grinding wheel is reversed.

Solution:

1. It is normal to cut hard fabrics when the tool is used to less than 5mm, and it is easy to break the tool when the cutting speed has not changed;

2. Replace the plano-convex grinding wheel which is badly worn in the cutter head to grind and clean up the foreign matter in the cutter head;

3. Adjust the position of the cutter slot block on the cutter head and the gap between the flat convex grinding wheel to make the cutter move smoothly up and down. If there are burn marks on the back of the cutter, it is generally that the convex grinding wheel does not turn, the wear is serious or the shaft pin is worn, and the sharpening edge is not sharp or the grinding times are few; If there are burn marks on the side, it is generally that the gap between the knife groove block and the flat grinding wheel is different or the fixing screw of the knife groove block is loose.

4. Re-adjust the grindstone to ensure the sharpness of the knife;

5. The cutting speed and the degree of dissolution are suitable for each other;

6. Reduce the number of layers or reduce the cutting speed;

7. If the broken knife occurs at the turning place, the conversion speed will be reduced;

8. Check to make sure that the loading screw is tightened.

13. Failure phenomenon: the tool can't descend and ascend normally.

Cause of failure:

1. The fabric is too sticky and the cutting thickness is too high;

2. Sensor or line failure;

3. Cylinder and trachea failure;

4. The tool holder collides with the grindstone or other related parts when lifting;

5. There is too much oil pollution at the lifting polished rod and linear bearing of the tool holder;

6. The upper and lower limit columns or damping seats are loose.

Solution:

1. Reduce the thickness of the cut fabric for the fabric with high viscosity;

2. Check the sensors of the upper and lower cylinders of the cutter and the gas pipe flow regulating valve;

3. Check that the lines of the upper and lower solenoid valves of the cutter and the relevant line heads are J20 connectors;

4. Check whether the stone collides with the grindstone or other related parts when the tool holder rises and falls;

5. Clean up the excessive oil pollution at the lifting polished rod and linear bearing of the cutter seat;

6. Check whether the lifting position of the tool holder is normal.

XIV. Failure phenomenon: the pull rod is deformed or disconnected.

Cause of failure:

1. The pull rod screw is not tightened;

2. The cutting thickness is too high, the fabric hardness is high, the cutting speed is fast, and the cutter is too thin, which leads to the breaking of the pull rod when the cutter hits the cutter groove block, and the slider may also be damaged;

3. There are hard objects in the cut fabric, or the cutter is not in place when cutting, or the groove block and the adjusting block are seriously worn.

Solution:

1. Check whether the upper and lower fixing screws of the pull rod are tightened;

2. The disconnection or deformation of the pull rod is often caused by the broken knife. Check whether the fixed shaft block of the cutter groove block is worn too much or loose;

3. Check whether the slider is damaged, whether the slider is smooth in the slider sleeve or whether there is a gap between the slider and the slider sleeve.

15. Failure phenomenon: the nose is noisy.

Cause of failure:

1. The nose cover is not tightened, and there is a gap between the two counterparts;

2. Grinding stone system;

3. Punching system;

4.C spindle;

5. Balance device;

6. The small connecting rod and eccentric sleeve of the fork rod are seriously worn;

7. The cutter position does not match the position of the adjustment block, cutter groove block and flat grinding wheel;

8. The slider is too tight or the cutter shaft shakes;

9. The speed of each cylinder is too fast, and there is a crash sound up and down;

10. The fabric is hard.

Solution:

1. Check whether the noise source is caused by the tightening of the cover position, or grinding noise, punching noise, or balancing wheel device, slider and pull rod;

2. Balance the noise of the wheel, adjust the position of the small connecting rod of the fork rod and the eccentric wheel, and check whether the related bearings are in good condition, generally, the small connecting rod of the fork rod is worn;

3. There will be a lot of noise when the center of the slider and the center of the pull rod and the eccentric sleeve are no longer in a straight line, which will easily damage the slider, and at the same time, there will be noise when the gap between the slider and the sliding sleeve is too large, which will affect the cutting accuracy;

4. When the long shaft on the cutter head and the linear bearing on the cutter seat are seriously worn, the cutter head will shake in all directions, which will produce great noise;

5. Confirm whether the cylinder speed of each part is uniform and whether the related shock absorber has played a role;

6. If the noise caused by the fabric is too hard, the level can be appropriately reduced or the cutting speed can be reduced.