US 12,422,372 B2
Inspecting machine for leather and inspection method applicable to said machine
Roberto Mastrotto, Sovizzo (IT); and Michele Zanin, Sovizzo (IT)
Appl. No. 18/044,129
Filed by Brevetti CEA SpA, Sovizzo (IT)
PCT Filed Aug. 30, 2021, PCT No. PCT/IB2021/057910
§ 371(c)(1), (2) Date Mar. 6, 2023,
PCT Pub. No. WO2022/053906, PCT Pub. Date Mar. 17, 2022.
Claims priority of application No. 102020000021502 (IT), filed on Sep. 10, 2020.
Prior Publication US 2023/0333026 A1, Oct. 19, 2023
Int. Cl. C14B 17/00 (2006.01); G01N 21/88 (2006.01); G06T 7/00 (2017.01); G06T 7/60 (2017.01); G01N 33/44 (2006.01)
CPC G01N 21/8851 (2013.01) [C14B 17/005 (2013.01); G06T 7/0004 (2013.01); G06T 7/60 (2013.01); G01N 2021/8887 (2013.01); G01N 33/447 (2013.01); G01N 2201/103 (2013.01); G06T 2207/30124 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An inspecting machine (100) for leathers (50), comprising:
a feeding unit (40) for a movement of a leather (50) according to an advancement direction (X);
a sensor unit (7) configured to capture images of said leather (50) during said movement; and
a processing device configured to identify one or more geometrical features (53) of said leather (50) based on an analysis of said images;
wherein said sensor unit (7) comprises a plurality of contact image sensors (8, 9) faced to said leather (50) when said leather (50) is moved by said feeding unit (40), said contact image sensors (8, 9) being arranged crosswise to said advancement direction (X); and
wherein said sensor unit (7) comprises said plurality of said contact image sensors (8, 9) arranged in mutually different positions according to said advancement direction (X) and mutually staggered according to a direction perpendicular to said advancement direction (X) in such a way that respective optical fields (10, 11) have corresponding first sections (10a, 11a) that are mutually superposed according to said advancement direction (X) to capture corresponding first image portions of a same first portion (54) of said leather (50) in two corresponding mutually different moments, and corresponding remaining sections (10b, 11b) to capture second image portions of other two respective mutually different portions (55, 56) of said leather (50) that are adjacent to said first portion (54), said processing device being configured to combine the images captured by said contact image sensors (8, 9) based on the analysis of said first image portions.