Device for stacking and aligning individually supplied sheets

US5199703A · kind A · utility

Assignee

• EASTMAN KODAK COMPANY · US

Inventor

• Werner Hess · Stuttgart, DE

Key dates

• Filing date: Nov 27, 1991
• Grant date: Apr 6, 1993
• Expiry date: Nov 27, 2011

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65H31/34
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

At the free end of an arm (1) which is pivotable about a shaft (12), a driven coupling portion (3) with a claw coupling (3a) is rotatably mounted, such coupling being held in positive engagement with a sleeve (5) shiftable on a shaft (2). Sleeve (5) is provided with a circumferential cam groove (5b) which has an advancing and returning pitch and is engaged by a stationary projection (11). Sleeve (5) is provided with a concentrical collar (5d) on which a second wheel (4), having a smooth circumferential surface, is shiftably mounted and held in positive engagement. On an eccentric collar (5a) of sleeve (5), a first wheel (6) designed as a radial ball bearing is mounted whose circumferential surface has high static friction. When sleeve (5) is set in motion, it moves to and fro, the second wheel (4) being urged via an inclined surface (4b4c) into contact with the first wheel (6) and entraining said wheel by frictional engagement. The cam groove (5b) and the eccentric mounting of the first wheel (6) are adapted to each other such that the first wheel (6) is driven in a pulse-type manner by frictional engagement and acts in a pulse-type manner on the sheet to be aligned.