Bag handling apparatus for a bag making machine
US4446676A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 10, 1981 |
| Grant date | May 8, 1984 |
| Priority date | — |
| Expiry date | Nov 10, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B61/28
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A bag making machine includes a generally vertically oriented forming element on which bags are formed in succession; a conveyor extending underneath the forming element and having a generally horizontal direction of advance, a first drive for intermittently advancing the conveyor, bag grasping tongs supported underneath th forming element below the conveyor, a second drive for moving the tongs upwardly through the conveyor to the forming element and for moving the tongs downwardly from the forming element through the conveyor, whereby the tongs draw a bag off the forming element and deposit the bag on the conveyor. There is further provided a third drive for moving the tongs in a direction having a component parallel to the direction of advance of the conveyor. The second and third drives are synchronized with one another and with the first drive for moving the tongs simultaneously upwardly and in the direction of advance of the conveyor during motion thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.