Delivery and ejection device for flat elements into a machine working them
US6672582B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2001 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Jun 10, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/1764
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A device for stacking sheets delivered on a first conveyor in a plurality of parallel streams of overlapping sheets, includes a second conveyor moving slower than the first conveyor that compacts the streams as they exit the first conveyor; a third conveyor that receives the streams from the second conveyor; and a plurality of stackers, each aligned with one of the streams exiting the third conveyor, formed of endless belts positionable horizontally which cooperate with stop members to stack the incoming sheets. Completed stacks are then moved downstream on the belt. When sheets in a stream are determined to be defective; its belt for that stream is tilted, and the stream falls onto a fourth conveyor for disposal. A spacer introduces spacing into each stream to delineate portions of the streams which will form successive stacks, includes adjusting devices that lengthen and shorten the second and third conveyors, and a device selectively operable to stop passage of the streams from the second conveyor to the third conveyor. The adjusting devices are coupled to simultaneously lengthen one of the conveyors and to shorten the other conveyor. A drive mechanism for the third conveyor mov…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.