1、 Maintenance of friction pairs in packaging machines

The so-called friction pair mainly refers to the contact surface between two moving parts that generate positions with each other. In gear transmission, there are friction pairs between two meshing tooth surfaces, the contact surface between the slider and the guide rail, the contact surface between the inner ring surface of the sliding bearing and the shaft, as well as the outer ring of the rolling bearing and the ball (roller), and the inner ring and the ball (roller). These contact surfaces constantly rub against each other during work. If certain maintenance measures are not taken, these contact surfaces will be worn, reduce accuracy, and thus reduce the working performance of the packaging machine, even seriously affecting the normal operation of the entire packaging machine equipment. Therefore, the maintenance of the friction pair is particularly important.

（1） Regularly maintain the cleanliness of the friction surface of the packaging machine

Due to the wear of the contact surface of the friction pair during operation, there are often fine metal shavings adhering to the surface, as well as the unclean working environment. There are also dirt or dust accumulated on the friction surface, which accumulates over time. If not cleaned in time, it will damage the smoothness of the friction pair surface and even the entire component. Especially during high-speed operation, the increase in friction resistance will cause a sharp increase in friction heat, accelerating wear and leading to the destruction of the friction pair. Therefore, it is very important to regularly or regularly clean the friction pair. Common cleaning agents include alcohol, gasoline, kerosene, and diesel. The cleaning method is to first immerse the components in a cleaning agent, and then clean them with a brush.

（2） Cleaning and packaging machine lubrication system

In order to reduce wear on the friction surface, good lubrication is generally necessary. Due to the influence of equipment operating conditions, working environment, and impurities in lubricating oil, it is easy to cause blockages in the oil hole pipelines of the lubrication system or damage to the oil supply device. Therefore, in order to ensure the normal operation of the lubrication system, it is necessary to regularly clean, unclog oil holes, pipelines, etc., and fill the oil cup with lubricating oil. Normal operation requires frequent cleaning, unblocking of oil holes, pipelines, etc., and lubrication of oil cups, etc.

（3） Adjusting the clearance of certain packaging machine friction parts

Some packaging machine friction parts have adjustable gaps between contact surfaces in order to achieve ideal contact conditions. When the equipment is delivered for use, these gaps are generally adjusted, but after using the packaging machine equipment for a period of time, the gaps may change due to load, vibration, and other reasons. In order to ensure the requirements of contact accuracy, adjustments must be made. The gap between the skateboard (block) and the guide rail can be adjusted by adjusting the movement of the wedge-shaped iron (insert strip), the axial and radial runout clearance of the cylindrical roller bearing, and the axial movement of the pressure plate on the outer ring of the bearing.

（4） Pressure regulation of packaging confidential sealing ring

The commonly used sealing rings are usually rubber sealing rings with or without a skeleton. Its main function is to seal oil and prevent dust. Due to long-term friction, the contact surface will experience varying degrees of wear, and the sealing ring itself will become loose, which will affect the sealing effect. Therefore, it is necessary to increase the pressure of the sealing ring by tightening the pressure screw, so as to reduce the gap between the sealing ring and the surface of the shaft, thereby playing a sealing role.

2、 Regular inspection of connecting and fastening components. A complete packaging machine equipment is composed of various components that are organically assembled and connected, and each component is assembled and connected through fasteners such as bolts, nuts, and keys. After running the equipment for a period of time, various components are impacted by different loads and forces. Therefore, these components may also become loose at the connection points, and if not checked and tightened or replaced in a timely manner, it can damage the equipment. So it is quite important to regularly check the connection parts of the packaging machine. High speed running fans, water pumps, etc. can cause vibrations due to unbalanced operation, which can easily loosen fasteners; In gear transmission, it is necessary to regularly check the edge connection between the gear and the shaft. Due to the effect of torque, it can cause loosening of the key or deformation of the keyway, which requires correcting the keyway and replacing the key; Pay more attention to fasteners for eccentric wheels, as long-term uneven stress can lead to unilateral wear of connecting components and loosening of fasteners; Pay attention to whether there is any looseness in the connection parts of components that are subject to significant vibration, and even bolts with spring washers should be checked regularly.

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