Metal working – Plural diverse manufacturing apparatus including means for... – Separate tool stations for selective or successive operation...
Patent
1988-06-08
1989-05-23
Yost, Frank T.
Metal working
Plural diverse manufacturing apparatus including means for...
Separate tool stations for selective or successive operation...
83301, 83349, 83404, 83909, 83923, B26D 900
Patent
active
048317136
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an arrangement for removing and separating into pieces wrapping wire that encircles a bale or like package in individual, closed loops, said arrangement being of the kind which includes a first wire clipping device for severing the wire in each separate loop of wrapping wire at a given location thereon, to form a wire length; a second wire clipping device for dividing the wire length into smaller pieces or slugs; and feed means for advancing the wire length to the second wire clipping device, said second wire clipping device comprising at least one cutting bit which projects radially outwards from a motor-driven rotor and the cutting edge of which generates a substantially cylindrical surface as the rotor rotates, and further comprises a stationary counter cutting-bit.
BACKGROUND PRIOR ART
An arrangement of the aforedescribed kind is described and illustrated in DE-B-21 00 869, this known arrangement being intended for the removal of wrapping wire used to hold together rolled metal strip that has been rolled-up into a cylinder form. This known arrangement is relatively complicated, since it requires the provision of a pair of feed rollers with associated drive means, for advancing the wrapping wire to the location of the second clipping device. One of the rollers of the pair of feed rollers must be capable of considerable movement towards and away from the other roller of said pair, in order to ensure that one free end of the wire that is formed when clipping the wire loop encircling the cylinder of rolled metal strip by means of the first clipping device is captured by the roller pair.
SUMMARY OF THE INVENTION
One object of the present invention is to provide a novel and advantageous arrangement for removing wrapping wires or like ties in which the provision of feed rollers and associated drive means for advancing wire lengths to the second clipping device is no longer necessary.
To this end it is proposed in accordance with the invention that the feed means of a wrapping-wire removal arrangement of the aforesaid kind includes a part-cylindrical guide surface which is located upstream of the counter cutting-bit and outwardly of and parallel with the surface generated by the cutting-bit of the rotor, and that the arrangement includes a means for introducing one end of said wire length between said guide surface and the rotor, the distance between the guide surface and the surface generated by the cutting-bit of the rotor being so much smaller than the thickness of the wire that when the rotor rotates the cutting-bit thereof, upon passage of the cutting-bit along the guide surface, bites into a wire length introduced between the guide surface and the rotor and dogs or likewise entrains the wire length to the location of the counter cutting-bit, with said wire length sliding against said guide surface, where said wire length is severed. This arrangement beneficially obviates the need of providing feed rollers between the wire clipping devices, therewith rendering the wire removing arrangement less complicated and less expensive.
Further characteristic features of the invention and advantages afforded thereby will be evident from the following claims and from the description made hereinafter with reference to an exemplifying embodiment of an arrangement intended for removing steel wrapping wire from paper-pulp bales while the bales rest on a conveyor.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic illustration of an arrangement of apparatus according to the invention, as seen at right angles to the direction of bale transportation.
FIG. 2 is a top plan view of the arrangement illustrated in FIG. 1.
FIG. 3 illustrates part of a wire clipping device located beneath a roller path.
FIG. 4 illustrates schematically a wire feeding and wire dividing device arranged in the proximity of the wire clipping device illustrated in FIG. 3.
FIG. 5 is an enlarged cross-sectional view of the part I illustrated in FIG. 4.
FIG. 6 is an enlarged cross-sectional v
REFERENCES:
patent: 3513522 (1970-05-01), Thomson
patent: 3521347 (1970-07-01), Bentley
patent: 4244251 (1981-01-01), Iwao et al.
patent: 4561928 (1985-12-01), Malthouse
Guggenberger Erich
Hoden Ebbe
Lin Y. C.
Sunds Defibrator AB
Yost Frank T.
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