General description

For machine tools and precision print devices designed for organic films, a single unit of these devices is used for processing workpieces in varying substrate sizes. Since the loss of machine utilization must be minimized, how to retain workpieces is particularly important. This volume describes the vacuum suction holding method that works with varying workpiece sizes.

Explanation

Cutting machines designed for thin workpieces or organic film print devices used with glass substrates will process the workpieces while holding them by vacuum suction. In this case, if the size of the retained workpiece changes, the vacuum suction groove remains open, causing the vacuum suction to fail or impairing the adhesion capacity. If you exchange the suction table, it will increase the machine idle time since the device must be disassembled for precision adjustments.

- Although the vacuum suction grooves are designed in various ways, the basic structure for vacuum suction is almost the same; vacuum suction holes are opened at the bottom of the vacuum suction grooves. (Fig.1)
- You will be able to prevent air leakage from the vacuum suction holes by replacing these holes on the bottom of the grooves with the tapped holes, and closing the unused suction holes with screws depending on the size of the workpiece that will be retained by vacuum suction.
- If you install a stopper for attaching a rubber O-ring to the stopper screw that is designed to close the vacuum suction hole, you will be able to shut off air leakage completely. (Fig.2)
- When you manually close the vacuum suction hole using the stopper screw with a rubber O-ring prior to exchanging the workpiece size, you will be able to hold workpieces of various sizes using vacuum suction.