Injection Molding Removal in Clean Room with Quality Inspection

Initial Situation & Goals

For the medical technology division, GEMÜ Switzerland manufactures seven different plastic parts on two injection molding machines. These should be automatically removed from the machines, subjected to a quality check, and then packed and stacked in trays.

For each injection molding cycle, 2 or 16 finished parts had to be removed and further processed – all with a cycle time of under 12 seconds.

Another challenge was to optimally utilize the tight space in the cleanroom. Due to Covid-19, the required quantities increased manifold during the project. This was mitigated during the development phase by adding an injection molding machine and two additional robots.

The Solution

Two Robot cells with three and five robots respectively were developed in the final stage. Standardized gripper change systems, high-resolution camera inspections, an electric rotary table, cleanroom-compatible conveyors, label printers, and a sophisticated safety system at Industry 4.0 standard were combined.

Both systems can be operated via a central HMI with a large touchscreen and can be converted from one product to the next in less than ten minutes. The interchangeable parts are mechanically and color-coded and are queried via the software developed by Robotec.

This reduced the risk of errors during operation to an absolute minimum. Automatic tray handling contributes to the high autonomy of the system.

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