How to adjust the printing squeegee? Share the correct use of printing squeegee
In order to better adjust the squeegee and ensure the quality of the printed product, the ink on the plate roller can be scraped off without causing the disadvantage of the knife or the fog. Therefore, the squeegee structure is divided into several functions. Equipment composition. The key components of the action components are the drive device for swaying on the squeegee, the squeegee clutch pressure device, the squeegee lift device, the squeegee angle adjustment device and the squeegee straight hair splint device. The squeegee oscillates up and down by independent motor drives, which are driven by the main drive system after the worm gear is decelerated; the clutch pressure of the squeegee is established by the cylinder according to the manual hydraulic directional control valve venting pharyngeal gas. The key is to make the scraper touch or get rid of the plate roller; The squeegee lifter device is established by the timing belt drive, which can establish the adjustment of the working pressure; the squeegee angle adjustment is established by the worm gear, and the suitable angle of view is especially important; the straightening splint device of the squeegee is straight from the top. The splint, the lower straight hair splint, the squeegee pad and the squeegee are configured to easily adjust the lifting amount of the squeegee. Each part of the structure of the squeegee damages the quality of the printed product from different levels. Therefore, the adjustment of the squeegee is particularly important. In the long-term production practice, it is found that if the various equipments of the squeegee organization are properly adjusted before packaging and printing, the disadvantages of the quality of the printed product can be prevented. The following are some of the work experience of the squeegee adjustment: 1. The squeegee oscillates up and down according to the eccentric shaft rotation. There is a sudden change in the speed from the left limit to the right limit. Therefore, the frequency of movement from the squeegee per minute guide is proportional to the speed of the plate roller. More than an infinitesimal number, usually 18 or 21, which can change the trajectory of the squeegee on the platen roller, and can take the residue on the squeegee down and down according to the up and down movement, reducing the knife line and making the actual effect of the squeegee stronger. . Rotating the eccentric shaft to the left limit adjusts the external thread of the joint bearing, causing the compression spring inside the left support frame to suffer a reduction amount. 2. The overall stiffness of the squeegee tissue is a key element that jeopardizes the quality of packaging printing, especially in the idling gravure printing press. When the plate roller rotates, the plate roller sends the printing ink to the squeegee. The printing ink has a powerful effect on the squeegee, so that the squeegee is rotated outward, and the cylinder is free from this development trend. The roller has a working pressure to drive the printing ink outside the stencil of the plate to be scraped off. If the rigidity of the squeegee is very poor, in order to scrape the printing ink outside the stencil, the standard air pressure of the cylinder will be increased, thereby increasing the squeegee pair. The working pressure of the plate roller, like that, the blade and the plate roller are easily damaged, resulting in a relatively large extravagance waste. The small scraper working pressure scrapes the printing ink outside the roll net, which saves the scraper and the plate roll is not easily damaged. The adjustment of the working pressure of the scraper is usually in the range of 0.3 to 0.4 MPa. 3. The precision of the installation of the squeegee structure is a key factor that jeopardizes the quality of packaging printing. When installing the squeegee structure, it is necessary to ensure the level of the squeegee bottom plate. If the level of the squeegee blade is very poor, As a result, the upper and lower aspect ratios of the squeegee are different, which results in the difference in the aspect ratio of the squeegee, which results in different working pressures of the squeegee up and down, which in turn jeopardizes the quality of the printed product. In the whole process of packaging and printing, if you find that the upper and lower colors are different, you should also search for the level precision of the squeegee bottom plate. 11. The precision of the production process of the upper straight hairspray and the lower straight hair splint in the straightening splint of the squeegee also jeopardizes the quality of the printed product. If the straightness of the straight hair splint and the lower straight hair splint on the squeegee is very poor, then When the straight hair splint and the lower straight hair splint are installed together with the scraper blade and the scraper pad, the flatness of the scraper blade is compromised and becomes an external economic wave pattern to remove such external economy. In the wavy shape, the printing ink outside the plate roll pit is scraped, which increases the working pressure of the blade, which in turn causes damage to the blade and the plate roller. The selection of the squeegee head and the adjustment of the squeegee angle are the key elements that jeopardize the quality of the print. When the squeegee blade is installed, the squeegee and the squeegee block are mounted on the squeegee straight hair splint and the straight hair. In the middle of the splint, after adjusting the length of the installation, use the screws to tighten the upper and lower left and right hairpins, so that the scraper block and the scraper are clamped. The scraper installation is very clear, the scraper installation is too prominent, the scraper It is easy to deform and has a wavy shape. In the packaging and printing, some areas can be scraped clean, and some areas can not be washed, thus jeopardizing the quality of printed products; The scraper is shortened and lacks ductility, so it is necessary to enlarge the working pressure of the scraper to scrape the printing ink outside the pit, which is easy to damage the plate roller. The scraper pad usually raises the straight hair splint by 30 to 40 mm, and the scraper blade lifts the scraper pad by 5 to 7 mm. As shown in Fig. 2, the wiper blade straight hair splint device is shown. At least the thickness of the squeegee pad is usually 0.4-0.6 mm, and the purpose of the squeegee pad is to increase the bending rigidity of the squeegee. The squeegee blade is usually made of a high-quality steel sheet having a thickness of 0.5-0.16 mm. Article source address: http:// Anesthetic Cream,Eye Anesthetic Cream,Topical Anesthetic Cream,Anesthetic Numbing Cream Shijiazhuang Asa Technology Co., Ltd. , https://www.hskinlift.com