Apparatus for folding panels of carton blank
US4044658A · kind A · utility
34Cited by
5References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 1, 1976 |
| Grant date | Aug 30, 1977 |
| Priority date | — |
| Expiry date | Apr 1, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2120/302
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Apparatus for folding the panels of a bulk box blank into a tube. Such apparatus is particularly suited to fold the panels of extremely large heavy-weight blanks which are resistant to folding and therefore difficult to fold manually. The apparatus includes a vacuum hold down unit to hold and register the blank in position, folding arm assemblies to successively fold down the outer panels of the blank into a tube, and a hold-down device to restrain the folded panels from springing upward as the folded blank is moved into a compression unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.