US 12,454,729 B2
Natural leather trimming machine and natural leather conditioning plant
Maximilian Turchi, Prato (IT); and Alessio Idoli, Pistoia (IT)
Appl. No. 18/576,643
Filed by Maximilian Turchi, Prato (IT); and Alessio Idoli, Pistoia (IT)
PCT Filed Jul. 7, 2022, PCT No. PCT/IB2022/056291
§ 371(c)(1), (2) Date Jan. 4, 2024,
PCT Pub. No. WO2023/281442, PCT Pub. Date Jan. 12, 2023.
Claims priority of application No. 102021000018161 (IT), filed on Jul. 9, 2021.
Prior Publication US 2025/0003018 A1, Jan. 2, 2025
Int. Cl. C14B 5/00 (2006.01); C14B 1/34 (2006.01); C14B 17/00 (2006.01); C14B 17/06 (2006.01)
CPC C14B 5/00 (2013.01) [C14B 1/34 (2013.01); C14B 17/005 (2013.01); C14B 17/06 (2013.01); C14B 2700/11 (2013.01); C14B 2700/12 (2013.01); C14B 2700/14 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A natural leather trimming machine comprising:
an ironing device for stretching and removing creases and wrinkles of said natural leather;
a cutting device arranged downstream of said ironing device, and configured to cut said natural leather along at least one cutting line;
a detection unit arranged in correspondence of an entrance of said natural leather into said cutting device, said detection unit being configured to detect a position of said natural leather, a shape of at least one end edge of said natural leather, and a position of any defects of said natural leather in proximity to said at least one end edge;
a plurality of conveyor belts configured, respectively, to move said natural leather from said ironing device towards said detection unit, present and subsequently move said natural leather away from said detection unit to/from said cutting device;
a first command and control unit configured to determine cutting coordinates of the natural leather based on said position of said natural leather, of said shape of said at least one end edge, and of said position of any defects, wherein said cutting coordinates define said at least one cutting line;
wherein said cutting device comprises at least one laser source, and at least one conveyor belt of said plurality of conveyor belts includes a conveying surface made with a metal mesh to prevent a laser beam emitted by said at least one laser source from rebounding on said natural leather;
a shielding container inside of which is positioned said at least one laser source;
wherein said ironing device comprises at least one pair of rollers counterfaced with each other, wherein said natural leather passes between said at least one pair of rollers to retain said natural leather;
wherein said ironing device also comprises a first movable arm configured for lifting/lowering said natural leather entering said at least one pair of rollers.