CASE STUDY: Screen Printing for Circuit Boards
In order to improve the accuracy and speed of screen printing circuit boards, a client came to us with the following issue:
The Problem
To print a circuit board accurately every time, a squeegee has to press the ink through the screen evenly and maintaining the proper force. This requires a reactive, intelligent actuator solution to apply even pressure to ensure a perfect finish on the end product rather than a set motion, direction and speed.
The ORLIN Solution
Two SMAC LAL-90 actuators with reactive software to establish and maintain the correct position and force for the squeegee. As the squeegee is moved over the screen, the actuators track each other to maintain their position. Therefore there is a dynamic adjustment of the force applied by each actuator.
Control of force is +/- 25g, whereas position control is maintained to +/- 5 encoder counts.
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