Package making – Methods – Applying a partial cover
Patent
1997-07-11
1999-02-16
Moon, Daniel B.
Package making
Methods
Applying a partial cover
53587, B65B 1302
Patent
active
058708839
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a method for packing bodies, e.g. fodder bales with an essentially cylindrical or parallelepipedic configuration, in a continous material, such as continous plastics, comprising to support the body and winding the continous material around the body from one or several magazines for continous material while rotating the body around a first axis of the body by means of a roller arrangement, comprising at least one rotatably arranged roller device.
The invention relates also to a device for performing the method.
Methods of essentially the above mentioned type are already known. According to such a known method a body, such as a bale, is supported on a table with two axially parallel and at a distance from each other arranged rolls, between which continous belts or stripes are running. The bands are arranged to rotate the bale around said first axis being essentially parallel to the roller axes. An essential problem with bales with a square or a rectangular cross section across said first axis exists, in that the bale circumferential speed is varying during each turn. From a position with the bale resting on a corner, the bale thus tilts, parts of the bale perpihery then having a speed surpassing that for a normal driven rotation. This results in a varying overlapping of the continous material, the plastics, wrinkling at the bale end portions as well as highly undesired thrust stresses in the structure, when the bale hits the roll lying in the tilting direction. Bale rotation will also become more energy consuming than necessary, when the bale must be lifted to a greater extent, when the corner/edge hits the belt. The bales might have a weight over 500 kg/m.sup.3, the tendecy being to even larger bale weights.
SUMMARY OF THE INVENTION
The present invention relates to a solution of the above described problems.
In accordance with the present invention, a method is provided for packing bodies in continuous material. Pursuant to the method, a roller arrangement is provided. The roller arrangement has a pair of spaced-apart roller devices with a belt drive running therebetween. At least one magazine is provided for holding the continuous material. The body is supported with the belt drive of the roller arrangement. The continuous material is wound around the body from the at least one magazine while the body is rotated around a first axis of the body using the roller arrangement. The at least one roller device is raised and lowered during the rotation of the body so as to approach an envelope surface of the body.
Also provided in accordance with the present invention is a device for packing a body in continuous material. The device includes a magazine for holding the continuous material. A roller arrangement is provided for rotating the body around a first axis so as to wind the continuous material from the magazine around the body. The roller arrangement includes a pair of spaced-apart roller devices with a belt drive running therebetween. The belt drive is adapted to support the body. At least one roller device (5') is raisable and lowerable to permit the at least one roller device to approach an envelope surface (9) of the body during a downward rotation of the envelope surface.
The invention will be described more in detail in connection with execution examples and the attached drawings, in which
BREIF DESCRIPTION OF THE DRAWINGS
FIG. 1 schematically shows a view of a first embodiment of a device for winding continuous material around a body, such as a fodder bale,
FIG. 2 schematically shows a first embodiment of a device according to the invention seen in the direction of a first body axis and likewise of the rotation axis of roller devices arranged to cooperate when rotating and supporting the bodies,
FIG. 3 schematically shows the device of FIG. 2 with the body and a roller device in a position different from FIG. 2,
FIG. 4 schematically shows another embodiment of a device according to the invention seen as the device according to FIGS. 2
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patent: 5042225 (1991-08-01), Drury et al.
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patent: 5327706 (1994-07-01), Skole
patent: 5385001 (1995-01-01), Ramer
patent: 5483785 (1996-01-01), DiCarlo
patent: 5487255 (1996-01-01), Soderberg
patent: 5505038 (1996-04-01), Karlqvist
patent: 5715655 (1998-02-01), Soderberg
patent: 5727359 (1998-03-01), Rampp
Moon Daniel B.
Paradiso John
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