Sheet-fed automatic die-cutting machine precision of some parts often affect the quality of products, as packaging printing enterprises, in the daily use of sheet-fed automatic die-cutting machine process, to carry out regular maintenance of the following parts, so as to avoid emergencies in production, even cause unimaginable consequences.
I. precision adjustment of front gauge
Sheet-fed automatic die-cutting machine precision is the key parameter to ensure the accuracy of the specified position, precision of the adjustment of the front gauge involves many factors, some operators often only use the front gauge inspection system, this method is not scientific. Although the front gauge inspection system can avoid the paper skew caused by the paper not in place and the paper not reliable in tooth arrangement and dipper, it is proved that it is impossible to truly adjust the front gauge precision by adjusting the probe diameter from about 1mm to about 0.1mm alarm precision. Therefore, the paper pressure wheel, paper running time, side gauge tension and other factors should be considered comprehensively to adjust the precision of the front gauge to a good state.
2. Paper test of press closing part
For sheet-fed automatic die-cutting machine, pressing the paper detection is very important, sometimes some operators will shut down this detection function, this is very dangerous, if pressing parts inspection of normal out of paper into the paper closed, once pressing card case, superposition of several layers of paper will be instantaneous, is bound to cause a stuffy car accidents, great damage to the equipment, and accident and very difficult to handle.
3. Replace lubricating oil regularly
Each brand sheet-fed automatic die-cutting machine in the factory documents are quite strict lubrication periodic table, the brand and model of lubricating oil required for each part of the equipment, especially the replacement of lubricating oil cycle are detailed requirements. In general, the enterprise can basically according to the required brand, model to purchase lubricating oil, but neglect the regular replacement of lubricating oil. When the replacement cycle of lubricating oil comes, many equipment lubrication management personnel see that the lubricating oil in the equipment oil tank is still very clear, so they give up the plan of replacing new lubricating oil and let the equipment continue to operate in the consideration of cost saving.
In fact, this is a big mistake, the main role of lubricating oil is to form an effective oil film, avoid direct contact between parts, to reduce friction between parts. However, after a long time of impact, the intermolecular strength of the oil film will become weaker and weaker, unable to form an effective oil film, leading to direct contact between parts and components resulting in severe wear. Therefore, it is necessary to replace lubricating oil in strict accordance with the cycle specified in the periodic table of equipment lubrication. Two bogey will replace the lubricating oil after precipitation to use.
4. Regularly inspect the tooth row
In the daily production, the tooth row should also do a good job of regular maintenance, generally its frequent failure performance is as follows.
1, clearance reset spring fracture or aging phenomenon. After this kind of fault occurs, the tooth row cannot accurately and reliably locate the paper in its mouth and position it under pressure, which will lead to the decrease of yield. The staff must pay attention to this part when repairing the equipment, and repair or replace the broken or aged parts in time to ensure normal production.
2, the tooth piece in its teeth paper bite force is insufficient. When processing some coating packaging products, packaging products, often can appear to die cutting deviation increases, and the deviation of random phenomenon, this is likely to be caused by insufficient teeth piece together, because of the tooth row operation is a process of instantaneous deceleration, coating type packaging products smooth surface, in the process of the walk is expected to friction with tooth row, if under the condition of insufficient in tooth bite, will surely give rise to slip when products in die cutting, will lead to increased die cutting deviation.
In the production, once found that the product die-cutting deviation, must immediately stop check, if the teeth bite paper bite force abnormal, you can adjust the position of the teeth or more teeth to solve the problem. Sheet automatic die-cutting machine precision of some parts often affect the quality of the product, as packaging printing enterprises, in the daily use of sheet-fed automatic die-cutting machine in the process, to carry out regular maintenance of the following parts, so as to avoid emergencies in production, even cause unimaginable consequences.
Detection and maintenance tips of die cutting machine
2021 03/15