Splice-in-register control
US4432481A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 14, 1982 |
| Grant date | Feb 21, 1984 |
| Priority date | — |
| Expiry date | Jun 14, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2301/46414
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A web-feeding machine used to provide a continuous supply of material having successive labels and registration marks printed serially thereon includes an assembly for splicing the material from a ready web to the material severed from a running web. The splicing assembly has a response time T after being actuated by a control system. The control system comprises a driving circuit for electromechanically actuating the splicing assembly, a scanner positioned adjacent the material to provide a signal in response to the presence of a registration mark, and an encoder for providing a fixed number of pulses proportional to a corresponding length of the moving material. The control system also comprises a control circuit connected to the scanner, the encoder and the driving circuit. The control circuit counts the number of encoder pulses B.sub.o between successive scanner signals and then decrements from that number B.sub.o to zero. In addition, the control circuit provides a time delay T.sub.o preset to approximate the response time T and then decrements to zero from a preset number D after the time delay T.sub.o has expired. When the control circuit reaches zero, it stores a decremente…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.