Presses – Binding – Binder tighteners and joiners
Reexamination Certificate
1999-02-26
2001-03-13
Vo, Peter (Department: 3721)
Presses
Binding
Binder tighteners and joiners
C100S011000, C100S01900R, C100S029000, C100S032000, C100S020000, C140S093600, C140S09300R, C074S465000
Reexamination Certificate
active
06199475
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a drive and bearing device for a binding station for finished bales predominantly in waste bale presses with a horizontally acting press plate, wherein several twisting wheels provided with a radial slot for receiving the binding wire are mounted in a support and are temporarily rotated by a common drive means for the purpose of twisting the wire.
2. Description of the Related Art
Twisting stations of the above-described type with slotted twisting wheels have already been known in the art for several decades. Used as the common drive in such wheels are either revolving endless drive chains or drive gear systems which interact with corresponding external gears at the twisting wheels.
However, in the introduction of DE-OS 26 56 457 from the year 1976, it is mentioned as a significant disadvantage of these known systems, among other things, as the principal reason for interruptions of operation that the twisting wheels provided with twisting slots for receiving the binding wire and external toothings for the drive do not permit a tight encapsulation against contamination because of the free accessibility to the twisting slots. This results over time in accumulations of large amounts of dirt which finally result in the destruction of the entire gear system. However, in the reference discussed above, the only solution to solve this problem is provided by an additional component in the form of a separating push member which can be moved in and out between the press box and the press duct.
Later references, such as DE 35 44 773 C2 from the year 1985 and others of more recent date, still do not attack the problem at the root, i.e., the location of the source of the problem, but continue to use externally toothed twisting wheels in cooperation with correspondingly finely toothed drive gear wheels.
SUMMARY OF THE INVENTION
Therefore, it is the primary object of the present invention to provide, instead of the conventional gear wheel drives which are susceptible to trouble, a completely novel drive and bearing system for the slotted twisting wheels which not only provides a significant improvement with respect to the feeding of the binding wire into the slotted twisting wheels, but primarily constitutes an extremely robust support and drive concept which continues to operate without any problems even after a long period of operation and an inevitably increased contamination.
In accordance with the present invention, the drive and bearing system has the following features which cooperate with each other:
a) the wheels supporting the slotted twisting disks have a plurality of arms or bearing points which extend outwardly in a star-shaped manner, wherein on the free end of each arm or bearing point is mounted a roller which is freely rotatable about an axis extending perpendicularly of the wheel plane;
b) for each wheel with the star-shaped arms is provided in the same horizontal plane a drive wheel with arc-shaped recesses at the outer circumference thereof, wherein the recesses correspond in a positively engaging manner with the rollers;
c) the drive wheels are for the purpose of twisting the binding wire connected to each other to perform the same movement through a common drive system which is temporarily rotated by a motor.
The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of the disclosure. For a better understanding of the invention, its operating advantages, specific objects attained by its use, reference should be had to the drawing and descriptive matter in which there are illustrated and described preferred embodiments of the invention.
REFERENCES:
patent: 860536 (1907-07-01), Ellingham
patent: 1040278 (1912-01-01), Collins
patent: 4459904 (1984-07-01), Probst et al.
patent: 2656457 (1978-06-01), None
patent: 3544773 (1990-11-01), None
Huynh Louis K.
Kueffner Friedrich
Vo Peter
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