Downstacker assembly
US4740193A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1986 |
| Grant date | Apr 26, 1988 |
| Priority date | — |
| Expiry date | Sep 19, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/1762
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An improved downstacker assembly in which paperboard blanks, received from a die cutter station, are passed sequentially through a trim removal station, a feed station, a stacker assembly partially disposed in a pit, and a stack retrieval assembly. The stacker assembly is disposed in a drop chute beneath a vacuum conveyor assembly which drops the blanks from the feed station into the drop chute, assisted by an impacting assembly which selectively separates the blanks therefrom. The stacking blanks are tamped against flexible curtains on a descending elevator assembly. A stack staging assembly serves as a temporary cradle to catch the falling blanks once a predetermined stack height is achieved until the stacks can be removed via a stack retrieval assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.