Safety device in the sheet feeder
US7465139B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2006 |
| Grant date | Dec 16, 2008 |
| Priority date | — |
| Expiry date | Sep 23, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2515/10
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A safety device with two conveying systems in the sheet feeder of a machine, capable of processing a sheet-shaped material. An objective of the invention is to construct a generic sheet feeder for large-format machines so that only stacks with a specified maximum weight can reach the processing stage. The present invention encompasses a weighing device (22, 28) located in the sheet feeder (1), which determines the weight of the stack (4), is positioned on the stack carrier (3) and is connected with a regulating and controlling device (19) controlling the driving mechanism (8). At least one permissible total weight is stored in the regulating and controlling device (19). The regulating and controlling device (19) compares the weight of the stack with said stored permissible total weight and the driving mechanism (8) is activated only if the weight of the stack does not exceed the permissible total weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.