Lift buffer system in the clean room

Details MTF Technik Hardy Schürfeld GmbH & Co. KG
Details MTF Technik Hardy Schürfeld GmbH & Co. KG

Task: Automatic buffering of medical devices in containers

Medical devices are produced on a high-speed injection molding machine (128 parts per cycle, cycle time approx. 7 seconds

The components should be cooled from approximately 100°C to approximately 80°C. This takes approximately 30 seconds.

Start-up parts and QA parts should be sorted out

Six 600x400mm bins are to be buffered, each filled with 90,000 parts +/-1%. Counting is to be performed using the reject counter of the molding machine.

The filled containers should be removed at an ergonomic height

Solution: Buffer conveyor system on 3 levels with switch, small conveyor belt and lifting lift

The good parts are separated from the reject parts or QA parts via a 2-way switch

The products are transferred to a stave compartment per cycle. The next stave compartment is then filled via a sensor underneath the conveyor belt.

The products fall onto a fully enclosed small conveyor belt, which can move longitudinally via a pneumatic cylinder. This conveyor belt is necessary to fill the containers on the lowest lift level. The small conveyor belt must first be retracted with each lift movement.

After the last cycle for the box in the filling position, the conveyor belt is cleared and serves as an intermediate buffer during the container change

The movable small conveyor belt also offers the advantage that cones of material in the container can be avoided, as different discharge positions can be reached

An electric lift with a connected three-level conveyor system provides the necessary buffer capacity. Production can thus be operated unmanned for a total of one shift (8 hours).

Details MTF Technik Hardy Schürfeld GmbH & Co. KG