Method and device for internally cleaning cans having corresponding openings

摘要

Internal cleaning of inverted cans includes engaging a can's cylindrical wall with a wall-conforming vacuum or adhesive gripper, causing a spraying unit to travel axially in and out of the can's opening while the can is inverted on a circular conveyor, and using a supporting arm or bottom stop to subject the can to a counterforce against a flushing force from sprayed cleaning medium. This prevents the can from being pressed out of a receptacle in which it sits during cleaning.

主权项

1. A process for internally cleaning inverted cans, each of said cans having a respective opening, said process comprising engaging a cylindrical wall of a can using a gripper that conforms to said cylindrical wall, said gripper being selected from a group consisting of a vacuum gripper and an adhesive gripper, causing an axially moving spraying unit for emission of a cleaning medium to travel in and out of said opening for internal cleaning of said can, cleaning said can by treating said can in an inverted position along a circular conveyor with said cleaning medium, wherein said spraying unit applies a flushing force to a base of said can, and subjecting said can to a counterforce to counter said flushing force, wherein subjecting said can to a counterforce comprises applying a counterforce with a supporting arm or bottom stop, thereby preventing said can from being pressed out of a receptacle in which said can is seated during cleaning.