Method and apparatus for transforming by pressing voluminous material into bales
AssigneeSunds Aktiebolag
InventorNils E. Stromberg
Life of this patent
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Abstract
Disclosed is a method and apparatus for pressing and binding voluminous material into bales, in which material in the form of several layers is supplied through a closable opening into a pressing chamber where compression takes place of each supplied layer. Final pressing is carried out at high pressure after a desired number of layers have been supplied into the pressing chamber, whereafter the pressing effect is lowered to a substantially lower pressure, so that the material compressed into a bale is permitted to expand, and the bale thereafter is discharged from said pressing chamber through a closable opening and bound while said substantially lower pressure is being maintained.
Claims21
A method of baling material, including the steps of supplying layers of said material into a pressing chamber, compressing the material after each layer is received by applying a first compression force to each of said layers in turn, applying a greater compression force to all of said layers at once after receipt of a last layer, partially reducing said greater compression force after a predetermined time so that the compressed material in the shape of a bale is permitted to expand, and thereafter binding said material into a bale while said partially reduced compression force upon said bale is maintained.
Apparatus for pressing and binding voluminous material into bales, comprising:
- a pressing chamber having a press die, a closable opening for receiving layers of material to be pressed, and a discharge opening for discharging pressed bales, said press die being adapted for pressing a plurality of said layers into the shape of a completed bale;
- a pre-pressing chamber for receiving material and pressing it into a layer;
- means for delivering each such layer from said pre-pressing chamber to said pressing chamber;
- means for controlling said press die to press said completed bale with a predetermined high pressure, and for subsequently partially lowering said pressure;
- binding means for binding said bale;
- and means provided to maintain said partially lowered pressure on said bale during transfer of said bale from said pressing chamber to said binding means and during said binding.
Dependencies are inferred from the claim text.