Cleaning contaminated pieces by hand is not only a time-consuming process, but also physically stressful for production when large numbers of items are involved. So how can the cleaning of production pieces with constantly changing diameters and shapes be automated – and preferably without time-consuming retooling?

A dust removal system provides a solution with the help of brushes and nitrogen.

MiniTec has developed and manufactured a dust removal system for a customer that cleans a wide variety of production pieces without time-consuming changeover processes.

The advantage is that the parts input supply and finished output is also integrated.

“We had to try out a lot of combinations and were constantly faced with new challenges during the development process” – Project Supervisor.

A wide variety of moulds can be fed, cleaned and discharged in a single system. Currently, five different pieces are currently being processed with only two changeover units. The items to be cleaned are fed via a clocked rotary turret and an inclined plane, which cleverly enables the rolling of conical components without requiring a changeover of the feeder. A vacuum suction cup serves as a gripper, which is equipped with a spring-loaded thrust piece that adapts to any component diameter – removing the need for any unnecessary retooling of the gripper.

Rotating brushes and nitrogen

The cleaning process itself is carried out by using a rotating brush and the supply of nitrogen under pressure, where the worked pieces are blown off – compressed air is considered too impure at this point. A sensor continually checks the extraction system, only allowing the cycle to operate if the extraction is functioning, and the nitrogen is extracted together with the contaminants. Not only does this protect the system from contamination, but, above all else, it protects the employees.

To change over to a new batch, all that is required is an easy swap over to replace the guide brushes on the front of the cleaning station. The brushes on the side of the system holds the items in position so that the vacuum gripper can hold it and discharge it on a cycle belt. The webs prevent contact between the items and removes the likelihood of damage.

The flexibility of the system is almost limitless with options to equip with rollers for simple repositioning, or it can be separated from the infeed and outfeed belts, resulting in the operation being more or less automated to suit the business.

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