Folding Unit and Method for Forming an Empty Cardboard Box by Folding a Blank around a Mandrel
AssigneeSasib S.p.A.
InventorsRoberto Ghiotti, Matteo Lena
Life of this patent
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Abstract
Folding unit for forming an empty cardboard box; the folding unit has a mandrel, around which a blank is folded to form the empty cardboard box. The mandrel has at least two parts, which are mobile in respect to one another between an expanded configuration, in which the two parts are further from one another so as to confer a maximum size to the mandrel, and a contracted configuration, in which the two parts are closer to one another so as to confer a minimum size to the mandrel.
Claims23
A folding unit (20) for forming an empty cardboard box (2);
- the folding unit (20) comprises:
- a mandrel (37) around which a blank (9) is folded to form the empty cardboard box (2);
- and a folding head (36) which supports the mandrel (37);
- wherein the mandrel (37) comprises at least two parts (49, 50) which are mobile in respect to one another between an expanded configuration, in which the two parts (49, 50) are further from one another so as to confer a maximum size to the mandrel (37), and a contracted configuration in which the two parts (49, 50) are closer to one another so as to confer a minimum size to the mandrel (37).
A folding method for forming an empty cardboard box (2);
- the folding method comprises the steps of:
- folding a blank (9) around a mandrel (37) supported by a folding head (36) so as to form the empty cardboard box (2);
- and
- moving at least two parts (49, 50) of the mandrel (37) relative to one another between an expanded configuration, in which the two parts (49, 50) are further from one another so as to confer a maximum size to the mandrel (37), and a contracted configuration, in which the two parts (49, 50) are closer to one another so as to confer a minimum size to the mandrel (37).
A folding unit (20) for forming an empty cardboard box (2);
- the folding unit (20) comprises:
- a mandrel (37) around which a blank (9) is folded so as to form the empty cardboard box (2);
- and
- a folding head (36) which supports the mandrel (37);
- wherein the folding head (36) supports the mandrel (37) in a sliding manner between a work position, in which the mandrel (37) completely protrudes in a cantilever fashion from the folding head (36), and a release position, in which the mandrel (37) moves backwards from the work position with a stroke that is greater than the axial extension of the empty cardboard box (2).
A folding method for forming an empty cardboard box (2);
- the folding method comprises the steps of:
- folding a blank (9) around a mandrel (37) carried by a folding head (36) to form the empty cardboard box (2);
- and sliding the mandrel (37) relative to the folding head (36) between a work position, in which the mandrel (37) completely protrudes in a cantilever fashion from the folding head (36) and a release position in which the mandrel (37) moves backwards from the work position with a stroke that is greater than the axial extension of the empty cardboard box (2).
Dependencies are inferred from the claim text.