Motorized and micro feed length adjustment for a press feed
US4350090A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1981 |
| Grant date | Sep 21, 1982 |
| Priority date | — |
| Expiry date | Jan 30, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/4549
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The invention relates to a mechanism for adjusting the feed length of a rack and pinion roll feed mechanism of the type generally used for feeding strip stock into presses. The feed length adjusting mechanism comprises a hub member connected to the press shaft, a throw block connected to the hub, and a slide rotatably connected to the connecting rod of the rack and pinion drive for the feed. A slide is locked to the block by means of a piston and cylinder lock mechanism, and a lead screw is threadedly connected to the slide and rotated by a bidirectional pneumatic motor mounted to the block, whereby rotation of the lead screw causes the slide to translate within the slideway. This changes the length of the eccentric connection between the rotating block and connecting rod thereby proportionately changing its stroke and the amount of strip stock which is fed into the press during each cycle of the feed mechanism. A fluid union mounted to the adjustment mechanism supplies pressurized air to operate the lock mechanism and the pneumatic motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.