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What are the adjustment methods for screen printing machines?

What are the adjustment methods of the screen printing machine? The screen printing process has been widely used in the production process of printed boards. Therefore, the screen printing machine has been applied in the printing industry. The cyclic phase diagram of the machine strictly adjusts the working cycle of the whole machine, and is well pinned or locked. Under normal circumstances, the user does not need to move. So what are the adjustment methods for screen printing machines?








   1. Operation adjustment of screen printing machine




   1. Adjust the parallelism between the three layers of screen printing machine guide, printing plate and working platform. If these three layers are not parallel, the screen printer will almost not work. Generally, the guide rail or platform is used as the reference for adjustment.




2. The platform and the guide rail should be parallel, and the squeegee plate moves along the guide rail. If the two are not parallel, the scraper will not always contact the platform with a certain pressure, or even a gap occurs. This adjustment has been adjusted before the machine leaves the factory. .




   3. The screen printing plate and the platform should be parallel, otherwise the screen spacing is inconsistent, causing the scraper printing pressure and the screen printing plate deformation to be inconsistent. Therefore, the flatness of the screen frame itself should be guaranteed, and the specific requirements are generally made by the user according to the needs.




   Second, adjust the scraping speed of the screen printing machine




  Using the adjusting handle of the stepless speed change device to realize the adjustment of the size of the entire working cycle. Ensure the speed of each link is consistent. Each kind of adjustment is equipped with a corresponding locking mechanism, and the printing operation of the blade must be carried out in a locked state. The installation and maintenance of the screen printing machine generally have specific regulations and requirements in the user manual of the machine, and the user can refer to the implementation.




   3. Adjusting the squeegee of screen printing machine




   ①The adjustment of the squeegee to the parallelism of the platform can be adjusted by the screw rods on the left and right respectively; the left and right of the middle shaft with the top screw can adjust the left and right top screw. The essence is to adjust the low position of the squeegee left and right.




  ② The adjustment amount of the inclination angle of the scraper is generally within the range of 65-85 degrees, and it can be selected as required.




   ③ The adjustment of printing pressure should be coordinated with the adjustment of printing plate and printing plate distance. In screen printing, the adjustment of printing pressure is actually the adjustment of the height of the squeegee.




   ④The length of the scraper board cannot be adjusted. Generally, it is supplied as a kit. There are several different lengths for each set.




   Fourth, stroke adjustment




  Including adjustment of stroke size and stroke position. The screen printing machine adopting the crank mechanism and the swing lever mechanism can realize the stroke adjustment by adjusting the radius positions of the crank and swing lever, and the ruler increases and the stroke increases. The screen printing machine with pneumatic mechanism can adjust the stroke by adjusting the position of the stroke switch. The stroke of a screen printer driven by a chain cannot be adjusted.




  What are the adjustment methods of the above screen printing machine are introduced here, the accuracy of the adjustment directly affects the printing position accuracy of the substrate, and the printing process is a dynamic process. Due to changes in various factors, quality problems often occur.