Package making – Closing packages and filled receptacles – Including provision for pleat of cover overhang
Patent
1992-09-29
1994-06-07
Sipos, John
Package making
Closing packages and filled receptacles
Including provision for pleat of cover overhang
53176, 53449, 53586, 53589, B65B 1158, B65B 2712
Patent
active
053178513
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention pertains to a process and a device for packing pressed bales and in particular to a processing device where a roll of film is moved on one carriage and a film arm is separately and independently moved on another carriage, and the film arm moves transversely to the travel direction of the carriages.
BACKGROUND OF THE PRESENT INVENTION
Such a process and the corresponding device have been know from EP 0,014,923. The enveloping device consists of two stationary brackets and two pivotable film arms here. The film arms are cantilevered at one end and carry, at the other end, the heavy film roll, as well as a welding and cutting device. The complete enveloping device is seated on a single transport carriage and is moved, at the level of the pressed bale, into the pressing or packing station from the side. During the traveling movement, the jacketing film, stretched between the stationary brackets and the film roll, is laid around the pressed bale, and the pivotable film arms perform an additional rotary movement with the film roll. Such an arrangement poses mechanical and kinematic problems.
The ends of the film are firmly connected at the junction point by welding, stapling, or in another manner. This is also necessary because the enveloping device must be detached from the pressed bale and be completely removed from the packing or press station for the subsequent strapping. It must make space for the independent strapping device. This technique is time-consuming and requires expensive design and control. Accommodating an enveloping device and a strapping device with their transport carriage separately from one another, maintaining them in the waiting position and having them move in and out separately is, last but not least, also a space problem. Therefore, the prior-art device cannot be used in all press systems, especially in so-called carrousel baling presses, in which the pressed bale is only poorly accessible from the side through the press columns. How the free end of the film is to be gripped and clamped for the next packing process after separation of the jacketing film and opening and withdrawal of the enveloping device is, furthermore, left open in the state of the art. The welding or stapling connection between the film ends also has proven to be unfavorable. Consequently, high-strength films with limited stretchability cannot be used for satisfactory packing.
SUMMARY AND OBJECTS OF THE PRESENT INVENTION
Therefore, the task of the present invention is to show a process and a device for packing pressed bales which can be used in any press system, are easy to handle, and permit better and more reliable packing.
The present invention accomplishes this task by having a film arm on a first carriage positioned on one lateral side of the bale. A roll of film is positioned on a second carriage on a second lateral side of the bale, and the second lateral side is substantially opposite the first lateral side. The carriages are movable in a travel direction and the film arm is movable with respect to the carriages in a transverse direction which is substantially perpendicular to the travel direction. The travel direction being substantially parallel to the lateral sides of the bale. The film arm extends laterally or transversely and grasps an end of the film from the film roll. The film arm then retracts to pull the film off of the film roll and the first carriage then moves in the travel direction to wrap the film around the bale. The second carriage also moves in the travel direction to cover the second lateral side with the film, and the film arm then extends traversely towards the second carriage to cover a front side of the bale. A gripping arm grasps a portion of the film adjacent the film roll, and a cutting means cuts the film between the film roll and the gripping arm. The gripping arm then moves the portion of the film towards the bale and a strapping means supplies straps around the bale and against the end of the film and the portion held by the g
REFERENCES:
patent: 2937484 (1960-05-01), Wiman
patent: 4499709 (1985-02-01), Miyano et al.
patent: 5125210 (1992-06-01), Lang et al.
Hirschek Herwig
Lang Jurgen
Autefa Maschinenfabik GmbH
Johnson Linda B.
Sipos John
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