First, the method of letting all the rolls in a straight line. The center points of the first group and the last group are determined first, and the center points of the two groups of rolls are mobilized to the center. Then according to these two points, pull a straight line.
The center point mark can be painted with chalk, and then the center point is marked with the center caliper. All the lower rolls on the machine are marked with the same point in the same way, and then the center points of the rolls are all adjusted to the straight line. After the lower rolls are straightened, they are installed back to the upper rolls. Second, the method of debugging the gap between the upper and lower rolls.
We should prepare a small piece of raw material for production, the thickness is the same as the usual material, and then with a small mirror and a flashlight. Put the material between the upper and lower rolls, and then tighten the screws on both the left and right sides at the same time. Be careful not to tighten the side and then screw the other side.
This will cause the gap between the two sides to be inconsistent. After tightening, use the mirror to illuminate one side to see if the gap inside is just matching, and at the same time, use the flashlight on the other side. If the gap is not uniform, the light transmission will be uneven. After confirming that the gap is even, loosen it a little and it is better to take out the material just put in. At this time, lock the screws on the left and right sides. Try to adjust all the gaps in the same way.