The TAMPRINTER series of vertical screen printing machine has its screen printing plate lifted up and down vertically, with independent mechanical transmission. The printing units of the machine are moved horizontally as right and left. With servo motor control and stepless speed regulation, according to customer budget It can be driven by ordinary motor or cylinder. Different price/performance ratio
TAMPRINTER vertical screen printer has stable and reliable performance. Also, the vertical screen printing machine boasts honeycombed aluminum-alloy stainless steel working table, vacuum absorption, microadjustment, control by advanced computer and precision linear guide track as the motion guide.

The screen frame is lifted up & down vertically, which keeps the screen printing ink in the "print zone", making this a much better design than a clamshell style screen printing press, where the ink constantly runs to the back of the screen frame.  Furthermore, this flat vertical screen lifting method allows the operator to better view the parts being loaded and unloaded for faster visual inspection. 

FAQ
Q1:
How to adjust the scraper speed and angle of view of the screen printing machine? What are some tips?
A1:
When printing, the adjustment of the screen printing machine's scraper directly affects the quality of screen printing. The scraper needs to determine the starting point first to provide a direction for the ink to transfer to the substrate, and then apply appropriate pressure to produce an appropriate amount of ink. The "squeeze force through the mesh" required for easy transfer. So how to adjust the scraper speed and angle of view of the screen printing machine?

The scraper maintains a certain pressure on the screen during printing. Excessive scraper pressure can easily cause the screen to deform. The printed graphics will be inconsistent with the screen graphics, which will also intensify the wear of the scraper and screen. Excessive scraper pressure will cause the screen to deform. There may be residual slurry on the screen after printing.

1. Screen printing machine scraper speed

Squeegee speed is one of the factors that determine efficiency; the setting of the printing speed is determined by the printing graphics and the viscosity of the printing slurry. The higher the speed, the shorter the time for the squeegee to drive the slurry into the screen holes, and the filling capacity of the slurry It will be different. If the printing lines are fine, the speed should be lower. The printing paste is different due to different processes, and the corresponding viscosity is different, but the overall viscosity is lower, so the printing speed is faster; in actual printing, the speed is the same. Very important, if the speed fluctuates during the printing process, it will lead to inconsistent graphic thickness.

2. Screen printing machine scraper angle

The setting of the starting point of the scraper is related to the slurry; the higher the viscosity value of the slurry, the worse the fluidity, the greater the downward pressure of the scraper on the slurry, and the starting point of the scraper is small; the adjustment range of the starting point of the scraper is 45°-75° . What plays a key role in the printing process is the 2-3mm area of the scraper blade. Under the printing pressure, the scraper rubs against the screen, which looks like a straight line at the beginning of printing. The local pressure of the scraper blade on the screen is very large, as shown in the figure. As shown, with the wear of the scraper blade, the shape of the blade becomes arc-shaped, and its component force on the slurry toward the screen increases rapidly, and the pressure exerted by the screen on the unit area of the screen decreases, and the scraper blade The actual starting point between the mouth and the screen is much lower than 45°. There will be residual slurry on the surface of the screen after printing, which is prone to leakage, and the edges of the printed lines are blurred. At this time, the scraper needs to be replaced.

When the screen printing machine prints, the starting point of the scraper increases, which generally results in an increase in the amount of ink. Vice versa, if the starting point is extremely small, the ink cannot pass through the mesh. How does the extrusion force of ink through the mesh occur? In this way, the squeegee of the screen printing machine determines a suitable starting point. It provides the direction in which the ink transfers to the printing object such as the material to be printed, and then imposes the appropriate force. pressure.

When the screen printer prints products too many times, the screen plate relaxes; the distance between the screen plate and the substrate changes due to loose positioning; the angle between the scraper and the substrate is incorrect, or the force is uneven; the consistency of the printing material is too thin or Over-drying; after cleaning the printing surface of the reworked workpiece, the solvent will not dry out and will cause screen printing, etc. Let’s take a look at how to deal with quality in printing:

Q2:
Patterns or lines are blooming,
A2:
The printing material is too thin, and excessive force is used when scraping; the printing material is unevenly mixed (the solvent in the printing material is unevenly dispersed); the solvent or cleaning agent on the screen mold is not dry after wiping, or the surface of the workpiece is cleaned during rework The agent is not dry or clean; after the first scraping printing, the sealing force of the printing material is too large, causing a small amount of printing material to squeeze out of the mesh; the movement (moving) speed of the scraper during printing is too different within the effective area of the substrate , pause midway or repeat printing, etc.; the fineness of the printing material does not match the selected screen mesh.

Q3: pitting
A3:
The printing material is too sticky and contains impurities and blocked holes; or the printing material is too sticky and the scraping force is insufficient; the maturity period of the printing material is not enough when preparing the printing material, and the residual bubbles in the printing material are not removed, and the bubbles stick to the substrate after screen printing, causing ; The surface of the substrate is not clean and affected by dust, etc., and the printing force is improper, light and uneven or scratched, and the force is insufficient; the printing material on the substrate is not dry, caused by dust in the storage place; under the appropriate conditions for the printing material, the screen and The distance between substrates is too large; the pre-press screen cleaning is not thorough.

Q4:
Silk screen medium adhesive screen version
A4:
There is a problem with the angle between the scraping plate and the substrate. They are not in contact with a line, but in a small plane; the distance between the screen plate and the substrate is small, or the tension of the screen plate is small; when screen printing, the printing force is too large, The ink layer is thick and sticks to the screen; the printing material is too thick, etc.

Solution

Carefully analyze the reasons that affect quality and solve them accordingly. As for the quality problems that occur in non-squeegee printing operations, such as web stretching problems, optimal distance problems, screen printing template production problems, workpiece surface treatment problems, and printing material selection, etc. etc. will affect the quality of screen printing.