Apparatus for stacking folded sheet material
US4867435A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1987 |
| Grant date | Sep 19, 1989 |
| Priority date | — |
| Expiry date | Oct 26, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/1932
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A stacking apparatus for signatures includes a signature-carrying belt positioned with respect to incoming signatures to raise the trailing edge of each signature and form a reverse shingle stream of signatures. A retarding wheel positioned above the signature carrying belt slows the travel of the signatures as they enter the stacker. The signatures pass through a nip created between the retarding wheel and the signature carrying belt. The signature carrying belt carries the reverse shingle stream from a horizontal orientation to a vertical orientation and then to a signature collector that includes a transport belt. A belt drive activated by a sensor of the pressure in the stack collected on the belt carriers the stack in a direction away from the signature carrying belt. The collector includes a vertical barrier that supports the collected signatures in a vertical orientation and automatically adjusts its position to accommodate varying quantities of signatures stacked in the collector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.