Paperboard feeding apparatus
US5172898A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 2, 1991 |
| Grant date | Dec 22, 1992 |
| Priority date | — |
| Expiry date | Jul 2, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2511/22
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a lead edge type paperboard feeding apparatus suitable for a box making machine for corrugated board sheets and the like, and more particularly, provides a paperboard feeding apparatus provided with delivery rolls which deliver paperboards piled up between a front guide and a backstop are delivered successively from the lowest layer, comprising a mechanism which, when the dimension of above-mentioned paperboard reaches a predetermined length and longer, above-mentioned backstop is amde to vary (ascend and descend or incline) automatically interlocking with the variation in length (or interlocking step-wise at a predetermined ratio), or an indexing unit which is able to set a start timing or a stop timing of feeding selectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.