Head for sealless strapping machine
US4791968A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 14, 1987 |
| Grant date | Dec 20, 1988 |
| Priority date | — |
| Expiry date | Dec 14, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B13/30
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
In a strapping head, slitting dies on a pair of pivotally mounted sealing jaws and a longitudinally movable punch on a punch holder cooperate and are adapted to make a sealless connection in two overlapped layers of a tensioned loop of steel strap. A longitudinally movable sealing yoke pivots the sealing jaws by means of cams on the sealing yoke and cam followers on the sealing jaws and moves the punch holder via a connection allowing lost motion between the sealing yoke and the punch holder. A pair of pivotally mounted notching jaws and a pair of notching cutters on a longitudinally movable notching cutter holder cooperate and are adapted to cut notches in opposite edges of the overlapped layers after the sealless connection has been made. A longitudinally movable notching yoke pivots the notching jaws by means of links and moves the cutter holder via a connection allowing lost motion between the notching yoke and the cutter holder. The sealing and notching yokes are arranged such that the sealing yoke moves the notching yoke for certain purposes. Strap-cutting elements are provided, which are adapted to cut the tensioned loop from the remaining strap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.