A slotter device comprising: a first upper slotter head (35;35A;35B) and a first lower slotter head which are supported so as to be rotatable relative to each other and perform slicing of a sheet; a first slotter knife (112;112A;112B) and a second slotter knife (113;113A;113B) which are mounted on an outer peripheral portion of any one of the first upper slotter head (35;35A;35B) and the first lower slotter head; a second upper slotter head (36;36A;36B) and a second lower slotter head which are disposed on a downstream side of the first upper slotter head (35;35A;35B) and the first lower slotter head in a transport direction of the sheet and supported so as to be rotatable relative to each other and perform the slicing of the sheet; a third slotter knife (115;115A;115B) and a fourth slotter knife (116;116A;116B) which are mounted on an outer peripheral portion of any one of the second upper slotter head (36;36A;36B) and the second lower slotter head; a third upper slotter head (37;37A;37B) and a third lower slotter head which are disposed on a downstream side of the second upper slotter head (36;36A;36B) and the second lower slotter head in the transport direction of the sheet, supported so as to be rotatable relative to each other and perform the slicing of the sheet; and a fifth slotter knife (118;118A;118B) and a sixth slotter knife (119;119A;119B) which are mounted on an outer peripheral portion of any one of the third upper slotter head (37;37A;37B) and the third lower slotter head, wherein the first slotter heads (35; 35A; 35B; 40), the second slotter heads (36; 36A; 36B; 41) and the third slotter heads (37; 37A; 37B; 42) are aligned in the transport direction of the sheet, and each of the second slotter knife (113;113A;113B), the third slotter knife (115;115A;115B), and the sixth slotter knife (119;119A;119B) is fixed to the slotter head, and each of the first slotter knife (112;112A;112B), the fourth slotter knife (116;116A;116B), and the fifth slotter knife (118;118A;118B) is mounted on the slotter head so as to be adjustable in position in a circumferential direction. a first upper slotter head (35;35A;35B) and a first lower slotter head which are supported so as to be rotatable relative to each other and perform slicing of a sheet; a first slotter knife (112;112A;112B) and a second slotter knife (113;113A;113B) which are mounted on an outer peripheral portion of any one of the first upper slotter head (35;35A;35B) and the first lower slotter head; a second upper slotter head (36;36A;36B) and a second lower slotter head which are disposed on a downstream side of the first upper slotter head (35;35A;35B) and the first lower slotter head in a transport direction of the sheet and supported so as to be rotatable relative to each other and perform the slicing of the sheet; a third slotter knife (115;115A;115B) and a fourth slotter knife (116;116A;116B) which are mounted on an outer peripheral portion of any one of the second upper slotter head (36;36A;36B) and the second lower slotter head; a third upper slotter head (37;37A;37B) and a third lower slotter head which are disposed on a downstream side of the second upper slotter head (36;36A;36B) and the second lower slotter head in the transport direction of the sheet, supported so as to be rotatable relative to each other and perform the slicing of the sheet; and a fifth slotter knife (118;118A;118B) and a sixth slotter knife (119;119A;119B) which are mounted on an outer peripheral portion of any one of the third upper slotter head (37;37A;37B) and the third lower slotter head, wherein the first slotter heads (35; 35A; 35B; 40), the second slotter heads (36; 36A; 36B; 41) and the third slotter heads (37; 37A; 37B; 42) are aligned in the transport direction of the sheet, and each of the second slotter knife (113;113A;113B), the third slotter knife (115;115A;115B), and the sixth slotter knife (119;119A;119B) is fixed to the slotter head, and each of the first slotter knife (112;112A;112B), the fourth slotter knife (116;116A;116B), and the fifth slotter knife (118;118A;118B) is mounted on the slotter head so as to be adjustable in position in a circumferential direction.