Web supply mechanism for an indexing motion packaging machine
US5170611A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1991 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | Aug 30, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2801/81
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An apparatus and method for supplying web material to an indexing advancement mechanism, such as may be associated with a packaging machine which forms the web into a component of a package. The web is supplied from a supply roll to an unwind mechanism, which continuously unwinds the web during indexing advancement of the web by the advancement mechanism of the packaging machine. The unwind mechanism includes an unwind motor which is operable to vary the rate at which the web is unwound from the supply roll. Tension is maintained in the web upstream of the advancement mechanism by a take-up mechanism interposed between the unwind mechanism and the advancement mechanism. The unwind motor speed is controlled by the position of a movable arm associated with the take-up mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.