English
简体中文
+86-519-83387581
When using a fully automatic screen printing machine, it is sometimes necessary to adjust the machine’s size to ensure print quality and production efficiency. If the mesh screen is unbalanced or the screen gap is incorrect, it will directly affect both the print quality and production speed. Below, we will share how to properly adjust key parameters of the fully automatic screen printing machine to ensure smooth operation and precise printing results.
1. Adjusting the Parallelism of the Rail, Mesh Screen, and Work Platform
It is essential to ensure that the rail, mesh screen, and work platform are parallel to each other. If they are not parallel, the screen printing machine will be unable to function correctly. Usually, either the rail or the platform is used as a reference for adjustment to ensure their parallelism.
2. Adjusting the Platform and Rail
The platform and rail must be parallel to each other. The squeegee moves along the rail, and if the platform and rail are not parallel, the squeegee will not apply uniform pressure to the platform, and gaps may form, causing inconsistent printing quality. This adjustment is typically made during the machine’s manufacturing process, but it should be checked periodically.
3. Adjusting the Mesh Screen and Platform
The mesh screen must be parallel to the platform. If these two are not parallel, the screen gap will be inconsistent, resulting in uneven squeegee pressure and mesh screen deformation. Therefore, the flatness of the mesh frame itself must be ensured to maintain stable printing results.
4. Adjusting the Screen Gap
The gap between the screen and the product should be maintained between 2-5 mm, which is referred to as the “screen gap.” Proper screen gap ensures clear printing, as it allows the ink to pass through the screen mesh more efficiently, avoiding blurred or inconsistent prints.
5. Ensuring the Squeegee is Sharp
During the screen printing process, the squeegee makes horizontal contact with the screen mesh and applies pressure. Over time, the squeegee will wear out and may develop scratches or nicks due to collisions. A worn-out squeegee will affect the print quality, so it is essential to check the squeegee’s edge for straightness, sharpness, and any defects before printing. The squeegee blade should remain sharp to avoid becoming rounded at the corners, as this will result in blurry prints and thick lines.
6. Adjusting Printing Pressure
In screen printing, appropriate and uniform printing pressure is crucial for achieving high-quality prints. The primary function of printing pressure is to ensure adequate contact between the screen and the substrate. While a certain level of pressure is required, the lower the pressure, the better. Too much pressure can cause the squeegee to press too deeply into the mesh, reducing the ink transfer rate and leading to greater deformation of the mesh and squeegee. This also increases the friction between the squeegee and the mesh, which can negatively affect printing speed and increase wear on the equipment.
