When KBA Rapida 104 four-color machine printed coated paper with a basis weight of 105g / m2, serious wrinkles appeared at the end of the paper.
From the fault phenomenon, it is preliminarily determined that wrinkles are generated after the first color combination is pressed. After analysis, before the paper enters the rule to reach the first color group, the gripping force of the gripper is uneven, and the gripper cannot hold the paper, causing the paper to slide in the gripper, causing the surface of the paper to be uneven, so it is combined in the first color Wrinkles occur when pressed. Further analysis, which part of the space problem lies. First of all, the search is based on the paper transfer teeth. The paper transfer device of KBA Rapida 104 four-color machine is an intermittent double-row tooth cylinder, followed by a single-row tooth transfer cylinder, and then the paper enters the printing unit. Jog the machine, input a few sheets of paper into the gripper, try to pull the tail of the paper by hand, and find that there are several grippers at the transfer roller gripper. Increase the gripping power of these grippers, and adjust the gripping force according to the standard. Restart and troubleshoot.
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