Apparatus for changing the direction of transport of paper stacks or the like

US4437560A · kind A · utility

Assignee

• E.C.H. Will GmbH · DE

Inventor

• Wolfram Wolf · Bilsen, DE

Key dates

• Filing date: Mar 11, 1982
• Grant date: Mar 20, 1984
• Expiry date: Mar 11, 2002

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65G47/846
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

Apparatus for transferring paper stacks from a first horizontal path into a second horizontal path which is coplanar with the first path has tongs installed at the junction of the two paths and driven to rotate about a vertical axis. The tongs has a lower jaw in the common plane of the two paths and an axially movable upper jaw which is held away from the first jaw when a stack to be transferred approaches the tongs and which is then moved toward the lower jaw to clamp the oncoming stack so that the latter rotates with the jaws and is transferred into the second path. The tongs then opens and is ready to engage the next stack. Signals for closing and opening of the tongs are generated by first and second detectors which are respectively adjacent to the first and second paths and respectively serve to detect certain surfaces of oncoming stacks and certain surfaces of transferred stacks. The starting or upper end position of the axially movable jaw can be adjusted by a feed screw by raising or lowering a pneumatic motor which serves to close and open the tongs.