What problems may occur during the operation of the hot melt adhesive machine?

Release time：2021/8/10 10:28:12 Click through rate：1020

Some problems may occur during the use of the hot melt adhesive machine. Do you know these problems? In the welding process of gluing machine, problems such as poor welding often occur. This problem is embodied in the phenomena of missing welding, false welding, continuous welding, uneven welding joints, glue accumulation, pull points and so on. For these welding defects, carefully observe and find out the causes of these defects, and then treat them with a targeted hot-melt adhesive machine.

① The solder joint is not smooth, and the pull point is not smooth

Unsmooth solder joint and pull point refer to the phenomenon that the solder joint is not formed or has burrs, and there are pull points after welding. This is mainly due to the poor fluidity of the glue, which is sometimes due to our improper parameter setting. Or if the residence time is too long and the flux evaporates too fast, a hot melt adhesive machine will be formed in the process of lifting the soldering iron head. If we can't handle the parameter setting, we should consider the problem of pressure-sensitive adhesive.

② Stacking of pressure sensitive adhesive

The accumulation of pressure-sensitive adhesive generally refers to the phenomenon that the pins do not leak out of a spherical solder joint. The main reason for this phenomenon is the excessive glue feeding. At this time, it can only be treated by reducing the amount of glue. Another reason is that the pin is too short and the pad is not exposed.

③ False welding

Virtual welding generally refers to the seemingly nothing in the welding process. In fact, it is not salvaged or the hot-melt glue machine cannot penetrate during welding. The reason for this is that the residence time of the soldering iron head on the pad is not good or the temperature is too low. Therefore, it can only prolong the residence time of the welding head or increase the temperature

④ Continuous welding

Continuous welding generally refers to the phenomenon that two or several solder joints are connected together. The reason for this phenomenon is either too much pressure-sensitive adhesive supply, or the gap between the two points is too small. In this case, cut it first and then check whether the direction of the welding head is correct. If it is incorrect, it should be adjusted in time!

No matter what equipment may encounter some problems during operation, the problems that hot melt glue dispenser may encounter are the above common problems. The problem of uneven solder joint will be encountered in the working process of gluing machine, which is one of the problems. What is the main reason why the solder joint is not smooth? You can read the above for details. Of course, in the welding process, if the welding head needs to be replaced without timely replacement, the probability of such bad solder joints is also great. Therefore, in addition to the reasons for replacing the welding head, the remedy must be applied to the case.

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