Method and apparatus for forming paper boxes and the like
US4194441A · kind A · utility
Inventors
Key dates
| Filing date | Apr 12, 1977 |
| Grant date | Mar 25, 1980 |
| Priority date | — |
| Expiry date | Apr 12, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B50/44
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A box blank with receptacle and cover sections each with side and end-flaps has a hinge panel joining the sections. A vacuum pickup draws a flat blank from a stack to a feed carriage which delivers the glue coated blank to a former and a forming head having concave and convex interacting pressure plates which maintain doubled over end flaps of each section in concave configuration while the folded end sections are adhered to form a box tray. Former flap benders cooperate with the tray forming head to shape the tray. A second vacuum pickup clasps the formed tray at the hinge panel and draws it from the forming head into engagement with folding elements such that cover and receptacle sections are bent together along the hinge panel to form a closed box. The machine implementing the process is cam and lever motivated with a gluer for forming the folded end flaps and holding the box partially closed after the tray is formed for loading articles into the box before it is closed. A feed carriage moves a blank from the supply stack past a gluer to the path of a movable forming head which progresses vertically to traverse a former with the blank. Both forming head and former have flap bend…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.