Round baler twine wrap control with automatic restart
US6446548B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 26, 2001 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Feb 26, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01F2015/143
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A baler (10) for wrapping a rotating bale (52) of crop material (16) with strands of twine (72) has two twine tubes (68) through which the twine is fed so that ends of the strands dangle from the tubes. A bale density sensor (36) senses bale density and a controller (42) compares the sensed density with a desired density selected by an operator via an operator control panel (34). When the sensed density reaches about half the desired density the twine tubes are moved to a twine insert position so that the ends of the strands dangle adjacent the rotating bale. When a full bale has been formed, the controller automatically actuates a duckbill (60) to push the ends of the strands toward the bale where they are caught up in the crop material. If either strand is not caught up in the rotating bale, a new wrap cycle is automatically initiated. The twine tubes are moved to a twine cut position, the twine is cut, the twine tubes returned to the twine insert position, and the duckbill is again actuated to push the strand ends toward the bale.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.