Paper web stacking controlled by electronic motor controlled by form length

US4737045A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventor

• Rainer Koefferlein · Munich, DE

Key dates

• Filing date: Jul 7, 1986
• Grant date: Apr 12, 1988
• Expiry date: Jul 7, 2006

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65H45/1015
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

In a paper stacking device for pre-folded continuous form paper wherein the paper web is supplied to a deposit table from below and the paper stack is built up proceeding from below, a stepping motor is coupled in terms of drive to the feed region, this stepping motor generating the reciprocating stacking motion by reversal of rotational sense, whereby the lift and the motion sequence are controllable via an electronic control device dependent on the form length. The seating surface for the acceptance bands accepting the paper stack is formed by discrete support elements; the deflection rollers themselves thereby serve for taking up the supporting bands. The paper stacking device can be an integrated component of the printer and is pivoted into and out of the latter.