Three common faults and corresponding solutions of automatic sealing machines
The dynamic sealing machine is composed of components such as a frame, a deceleration and speed control transmission mechanism, a sealing and printing mechanism, a conveying device, and an electrical electronic control system. The working principle is that when the packaging containing the items is placed on the conveyor belt, the sealing part of the bag is automatically sent between the two sealing belts in operation and brought into the heating zone. The heat of the heating block is transmitted to the sealing part of the bag through the sealing belt, causing the film to melt and soften. Then, through the cooling zone, the surface temperature of the film is appropriately reduced, and then rolled by the knurling wheel (or printing wheel), Glue and press the plastic film on the top and bottom of the sealing part to create a mesh pattern (or printed logo), and then use the guide rubber belt and conveyor belt to transport the sealed packaging bag out of the machine to complete the sealing operation.
In recent years, with the rapid development of industries such as food and medicine, automatic sealing machines have also ushered in a vast market, and the industry market scale is constantly expanding. And in the fierce competition, automatic sealing machine manufacturers constantly innovate and upgrade their products, creating equipment with more compact structure, more beautiful appearance, beautiful and firm sealing, high work efficiency, simple operation, and convenient maintenance, bringing economic benefits to customer development. However, during the use of the device, users still cannot avoid some common faults that need to be addressed.
Poor sealing is one of the common faults of fully automatic sealing machines, and the main reasons for the faults are three aspects. The first reason is that the sealing area of the packaging bag cannot be sealed, which is caused by factors such as insufficient heat sealing temperature, too fast heat sealing speed, improper pressure of the cold pressing rubber wheel, and quality issues with the heat sealing film.
The failure to seal is also related to the quality of the heat sealing film. If the corona treatment of the composite lining is uneven, the effect is not good, and it happens to occur at the sealing point, it will definitely not be able to seal. This situation is rare, but once it occurs, the product will inevitably be scrapped. Therefore, after discovering quality problems, it is necessary to analyze the cause in a timely manner and solve them. If there is moisture or dirt at the sealing point, it can also cause the sealing to be unstable. "The industry said.
For this fault situation, the main solutions include: appropriately increasing the heat sealing temperature, then reducing the heat sealing speed, and increasing the pressure of the cold pressing rubber wheel.
The second reason is that under the pressure of the sealing knife, although the bag opening is sealed, it will crack again when slightly pressed or peeled off. This situation is related to insufficient heat sealing temperature and uneven cutting surface of the heat sealing knife. For the former, the problem can be solved by appropriately increasing the heat sealing temperature. The main reason for the latter is that the intermediate screw is installed diagonally, or the pressure spring of the upper heat sealing knife is uneven. Just make the corresponding adjustments.
The third reason is that during the peeling test on the sealing area, there was a phenomenon of half being firmly sealed and half being separated. The sealing quality of such packaging bags is still not qualified because the content is easily leaked due to compression during storage and transportation.
Dealing with temperature gauge display malfunction
It is understood that this fault is also fatal for fully automatic sealing machines. Once the temperature gauge fails and cannot control the temperature, it will cause the temperature of the heat seal to be unstable, and there will often be burning or weak sealing at the sealing point. In this regard, the industry suggests that users check the thermometer or replace it, readjust the heat sealing pressure, and replace the heat sealing material.
Sealing machine running and stopping
In response to the unstable operation of the sealing machine, it is necessary to check whether there is any detachment or looseness at the shaft rod connection of the motor and the gearbox connection. If these phenomena occur during the inspection of the carbon brush wear of the motor, it is necessary to tighten and replace them.
In addition to understanding and mastering these three common faults and corresponding solutions, users also need to pay attention to maintenance and upkeep during equipment shutdown in order to maintain a longer lifespan of the equipment and ensure stable production operation.
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