Linking machine (100) for linking a piece of knitwear (50) and a collar (51) to one another, which are initially separated, comprising:- a fixed unit (110) comprising a support frame (120) and a device (16) for feeding the piece of knitwear (50) and/or the collar(51) in a longitudinal direction (Y-Y),- and a mobile unit (130), comprising:- a needle (15) equipped with a related device (140) for operating said needle (15) in a vertical direction (Z-Z), which is perpendicular to the longitudinal direction (Y-Y), to perform the linking,characterized in thatthe linking machine (100) comprises a guide (53) configured to align a collar seam line (7) with a nape seam line (8) of the piece of knitwear (50) and with a neck seam line (10) of the piece of knitwear (50),said guide (53) comprising a plate (17) having at least one stop (22,23) for the piece of knitwear (50), which is arranged in a direction that is substantially parallel to said longitudinal direction (Y-Y) so as to allow the alignment of the piece of knitwear (50) in parallel with the stop itself (22,23), and a fold (21) on a corner of the plate (17), which is arranged upstream of said at least one stop (22,23) with respect to a feeding direction of the piece of knitwear (50), said fold (21) helping to unroll the nape edge (9) where the collar(51) joins.
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