Poor side regulations will lead to inaccurate overprinting, thereby increasing the scrap rate and causing serious waste to the enterprise. So how can we judge whether the side gauge paper is normal or not? Analysis and judgment can be made according to the following situations.
â— Judge according to the rules and regulations of the printed product: take out a little of the printed product and check whether the distance between each ruled line and the edge of the paper is the same. If they are consistent, it means that the side gauge pulls the paper normally, otherwise it is abnormal.
â— Judging by the color scale of the printed product: take out the printed part, and check and compare whether the color scale of each printed product is the same. The same indicates normal, otherwise it is abnormal.
â— Judging from the center line of the printed product: Some paper is cut diagonally. If you only look at the gauge line and color mark, it is impossible to accurately judge whether the side gauge is pulling paper normally. In this case, you can take part of the printed matter into the bite (or drag it slightly), and then use both hands to push the paper apart, and try to straighten the twisted paper to see if the center line of the trailing (or bite) part is in The same straight line. If the center line of each printed product is on the same straight line, the side gauge is normal. If there is an error, it means that there is a problem with the side gauge.
â— Judging by the pattern of the overprint of the printed matter: if the pattern is overprinted, it means that the side gauge pulls the paper; if the overprint is not correct, it means that the side gauge pulls the paper. In addition, if the overprint near the gauge is accurate, but there is an error on the other end, it means that the paper is stretched, not that the side gauge is not good for pulling paper.
â— Judging according to the edge of the paper's pull edge: when the edge of the paper is jagged and jagged, it means that the side rule is pulled; when the edge of the paper is crumpled, it is almost as wide as the pull wheel When the hole is broken, it means that the paper is too far away from the side gauge and cannot be pulled in place; and when a penetrating hole appears in the position touched by the rule of the printed sheet, it means that the time for the rule to lift is a little late, and the swinging teeth Fight for paper.
â— Judging by the abnormal pressure: Sometimes the side gauge pull paper abnormality has a certain relationship with the combined pressure. When the side gauge pull paper is too early, it will cause the paper to not be in place, that is, the paper is not entered before the front rule Pulling the side gauge causes the stop to fly as soon as the pressure is applied.
â— Judging by feeling: Whether the side gauge pulls paper is normal or not, it can also be judged by feeling. During the operation of the machine, lightly press the pull wheel of the pull gauge by hand, and judge the length of its rotation (pull gauge) according to the feeling. If the pulling time is too long, the paper may be pulled over, and if it is too short, the paper may not be pulled in place.
â— Judging by comparing the movements of the push-pull gauges: When it is suspected that there is a problem with the current side gauge pull time, you can also put down the corresponding side gauge, and then click the car to observe whether the landing time of the two or the movement of the pull wheel Consistent, if it is inconsistent, it means that the paper pulling time is wrong.
â— Judging by the method of detecting the paper pressure tongue: when the paper pressure tongue is too low, it is easy to cause the paper not to be pulled in place, and too high, it will cause the paper to be pulled too. To determine whether it is normal, tear the printed paper into a small piece, fold it into three folds, and then click the car to wait for the pull rule to fall. Then insert the folded paper under the tongue and observe the gap between the paper tongue and the paper delivery table. The size of the gap, so as to judge whether the pull gauge is normal, generally when the paper is inserted into the paper pressing tongue, it feels a little pulling force is normal.
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