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Four problems you might ignore in “fishtail”

With the continuous development of the industry, automatic stitching and gluing equipment has been popularized, but the use in many enterprises is not very ideal, some of them, of course, due to equipment problems, while some are personnel improper operation. In fact, the biggest problem of automatic gluing and stitching equipment is not fast speeding, but the “fishtail” in the process of carton production, whether this kind of problem can be avoided in operation?In fact, in order to avoid this kind of problem, we must consider several factors in the operation, let us do a simple analysis from each part of the equipment :1.Paper feeding unit The paper feeding unit is the most important, if the paper feeding is not ooth, the paper will be inclined when feeding out, resulting in the fishtail in the subsequent formation.Feeding notes:The amount of paper cannot be too much, if too heavy, the cardboard will produce deviation.Front baffle height adjustment is 1.5 times than the height of the cardboard.Make sure that the feed platform and rollers are clean. If the feed wheel is too ooth, the friction with the paper will be weakened, and the paper will be inclined, leading to the fishtail.2.Glue applying Note:Before the production, please ensure that the pasting roll is clean and avoid paper jam. If the paper is stuck, it will lead to a poor pasting.After the cardboard gluing, we can see whether the feeding is tilted, if the glue line is tilted, then the feeding is tilted as well.3.Folding Unit When adjusting the guide rod on the operating side, the radian should be gradually reduced, and there is no need to rush. The folding degree should be adjusted along the carton line. This is very critical to the carton formation.4.The front baffle when stitching the carton The front baffle is suitable for stitching list when scheduled, when the cardboard run to the front baffle, it is to front segment alignment, and then run to the stitching unit for stitching, so this baffle is very important, we should do regular maintenance and repair. If there is loose, it cannot ensure that the cardboard alignment, resulting in fishtail.

Strategies for scoring correction to solve the fishtail

In the case of poor carton formation, the correction wheel is absolutely the key part of adjustment. This paper introduces the role of correction wheel and how to solve the problem of poor carton formation.1. Two modes of scoring correction Inclined wheel + belt group: this mode belongs to the pre-correction, the adjustment time is long, the angle can be corrected according to the scissors difference, the correction effect is good, The scissors difference is relatively all, but it will cause double scoring line.Belt + in-line roller: this mode belongs to post correction, adjustment is fast, generally it will not cause double scoring line. However, the correction effect is not so good because there isno correction in the earlier stage. 2. Comparison of advantages and disadvantages of different scoring line correction methods:Ways of scoring correctionAdvantagesDisadvantagesBelt+ RollerBelongs to late correction, adjustment is fast, generally  will not cause double scoring lineThe correction effect is poor because there is no correction in the early stage.Inclined roller+ BeltsThe angle can be corrected according to the scissors difference, the correction effect is good, The scissors difference is relatively allbelongs to the early correction, the adjustment time is long, it will cause double scoring line. 3. How to solve poor carton formation? 1).Use conical rollers, folding rods and belts for the final pressure scoring and folding formation, the required equipment will depend on the design and size of the carton to be processed. In most of the folding gluing and stitching machine each part of the equipment speed can be adjusted independently, in order to correct the position of the cardboard if necessary.2).Some models will be installed secondary scoring device, which can effectively correct the scoring line, some manufacturers will choose to install spray humidifier on the top, which can also effectively prevent the cardboard breaking due to the dryness. 3).If scoring roller, scoring rod and belt adjustment are not good, it will cause fishtail or seaming size inconsistent. If scoring line is poor after printing or die cutting, you can adjust the belt angle and scoring roller to correct. The pressure of scoring roller should be higher in the front and lower in the back, and the distance between the scoring rod and the angle of the belt can be adjusted according to the different orders, which can effectively avoid the problem of different sizes of seams.