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As an important equipment in the printing field, the normal operation of the silk printing machine depends on the precise coordination of various components, and the gearbox plays a key role in the transmission system of the silk printing machine. The installation of the gearbox seems to be just a simple operation of fixing it on the frame, but it actually contains many technical points and professional considerations, especially ensuring the accurate installation position and the concentricity of the connecting shaft with other transmission components meet the requirements, which has a decisive impact on the performance and printing quality of the silk printing machine.
The working principle of the silk printing machine is based on transferring ink through the screen to the substrate, and the whole process involves the coordinated operation of multiple sets of transmission components. As one of the core components of the transmission, the gearbox needs to undertake the important tasks of transmitting power, changing speed and torque. If the installation position of the gearbox deviates, or the concentricity with the connecting shaft does not meet the standard, it will break the balance of the transmission system of the silk printing machine, leading to a series of problems.
Before starting to install the gearbox, the preparation of the frame is very important. The frame is the main supporting structure of the silk printing machine, and its flatness and stability directly affect the installation effect of the gearbox. The mounting surface of the rack needs to be carefully inspected and processed to ensure that there are no impurities, protrusions or depressions on the surface, and to meet the basic requirements for the installation of the gearbox. The mounting holes on the rack need to be checked to ensure that the position and size of the holes are accurate. This is the first step to ensure the accurate installation position of the gearbox.
When the gearbox is installed on the rack, it cannot be placed arbitrarily. According to the design drawings and installation specifications of the screen printer, the gearbox should be accurately positioned to the corresponding position of the rack. This process requires the use of professional measuring tools, such as a level and a micrometer. The level can help ensure the accurate horizontal position of the gearbox to prevent uneven force caused by tilting; the micrometer can accurately measure the deviation of the gearbox installation position to ensure that it is consistent with the designed position. With the assistance of these tools, the gearbox can find the most appropriate "foothold" on the rack.
After the gearbox is initially placed on the rack, fixing becomes a key link. Fixing the gearbox requires the use of appropriate bolts and nuts, and a certain sequence and force requirements must be followed during the tightening process. Usually, the bolts are tightened diagonally and tightened step by step in multiple times, so that the gearbox can be evenly stressed and deformation or displacement caused by excessive or insufficient local stress can be avoided. After each tightening of the bolts, the position of the gearbox needs to be detected again using the measuring tool to ensure that its position has not changed.
Ensuring the concentricity of the connecting shafts of the gearbox and other transmission components is a difficult and important point in the installation process. If the concentricity is not up to standard, the gearbox will generate vibration and noise during operation, accelerate the wear of gears and bearings, reduce transmission efficiency, and may even cause damage to transmission components, seriously affecting the normal operation of the screen printer. In order to meet the concentricity requirements, during the installation process, the connecting shaft and the shaft hole of the gearbox should be carefully adjusted. You can first gently insert the connecting shaft into the shaft hole of the gearbox, and then observe the rotation of the connecting shaft in the shaft hole by fine-tuning the position of the gearbox. If the rotation is smooth and there is no obvious stagnation or offset, it means that the concentricity basically meets the requirements; if the rotation is not flexible, you need to continue to adjust the position of the gearbox until it reaches the ideal state.
In the process of adjusting the concentricity, some auxiliary tools can also be used. For example, use a dial indicator to measure the radial runout of the connecting shaft, judge the degree of concentricity deviation through the measured data, and make targeted adjustments according to the deviation. At the same time, the experience and feel of the technicians also play an important role at the installation site. Experienced technicians can keenly perceive whether there is a problem with the concentricity by the feel of the connecting shaft when it rotates, and make adjustments quickly.
After the gearbox is installed, it does not mean that the work is over. A comprehensive inspection and test is still required. First, the fixing bolts of the gearbox should be tightened again to ensure that they will not loosen during subsequent operation. Secondly, manually turn the entire transmission system to check whether the gearbox and other transmission components are smooth and whether there is interference. Finally, start the screen printing machine, let the gearbox run for a period of time under actual working conditions, and observe its operation, including vibration, noise, temperature and other indicators. If any abnormality is found, it is necessary to stop the machine immediately for inspection and adjustment until the installation of the gearbox fully meets the requirements.
The installation of the screen printing machine gearbox is a delicate and important work. From the preparation of the frame to the positioning and fixing of the gearbox, to the concentricity adjustment and the final inspection and testing, each link is closely linked and interlocked. Only by strictly controlling each step, ensuring the accurate installation position of the gearbox and the concentricity of the connecting shaft with other transmission components can the stable operation of the screen printing machine transmission system be guaranteed, thus laying a solid foundation for high-quality printing work and allowing the screen printing machine to play the maximum efficiency in the printing field.
