Roll feeder
US5913470A · kind A · utility
Inventor
Key dates
| Filing date | Jan 13, 1997 |
| Grant date | Jun 22, 1999 |
| Priority date | — |
| Expiry date | Jan 13, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D43/09
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An electric motor driven roll feed system for intermittently advancing stock into the work station of a punch press. The roll feed system is designed so that its main rotating elements have greatly reduced rotational inertia. A low inertia overall roll arrangement is characterized by two relatively small diameter cooperating feed rolls that are respectively radially supported by a plurality of light back up rollers that peripherally engage these small feed rolls at locations spaced along the operative lengths of such feed rolls. The spaced rollers thus allow the applied operational stock gripping, feeding and braking forces to be distributed over several support locations along the operative axial length of each feed roll. This new roll arrangement has self aligning and load distributing characteristics by reason of the back up rollers engaging opposed sides of each respectively associated feed roll and bearing the major portion of the operational forces received from the feed rolls at spaced locations along the operative axial lengths of the latter. Next the power drive train or transmission from the output shaft of the electric drive motor to both of the feed rolls incorporate on…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.