Apparatus for folding and closing the tops of folding cartons
US4241560A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1979 |
| Grant date | Dec 30, 1980 |
| Priority date | — |
| Expiry date | Mar 19, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S53/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for folding and closing to top of folding cartons prefabricated from cut boxboard stock having an inner thermoplastic-resin liner includes a stepwise conveyor for conveying the folding cartons in a row, upright, with the fillet seam of the cartons perpendicular to the direction of travel, and a single folding, pressing and welding station having ultrasonic welding means including a vibratable tip and a folding, pressing and welding tool. The tool includes a pair of jaws and the tip, which are mounted for movement toward each other in the manner of tongs, wherein one of said jaws includes a folding wedge and an anvil above said folding wedge, and the other jaw is configured as a folding and clamping wedge. The jaws and holder are mounted on a common holder for movement into and out of engagement with the fillet seam of each container on the conveyor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.