	US 7,493,840 B2
	Three-side trimmer
Chuji Yamaguchi, Shiga (Japan); Ko Ouchiyama, Shiga (Japan); and Masato Nogawa, Shiga (Japan)
Assigned to Horizon International Inc., Shiga (Japan)
Filed on Sep. 21, 2004, as Appl. No. 10/945,939.
Claims priority of application No. 2003-329607 (JP), filed on Sep. 22, 2003.
Prior Publication US 2005/0061135 A1, Mar. 24, 2005
Int. Cl. B26D 5/20 (2006.01)

U.S. Cl. 83—276 [83/277; 83/278; 83/279; 83/280; 83/281; 83/404; 83/934; 83/733]

5 Claims

1. A three-side trimmer adapted to cut top and bottom edges (1a, 1b) and front edge (1c) of a bound material (1) by means of a single trimming cutter while rotating the bound material (1) at every predetermined angle, comprising:

a bound material feed unit (2) for feeding the bound material (1) one by one;

a rotating table unit (3) having a table (10) for receiving the bound material (1) from said bound material feed unit (2) at a predetermined position and rotating the bound material at every predetermined angle in such a manner that the bound material is arranged at three positions of a top edge cutting position, a front edge cutting position and a bottom edge cutting position;

a trimming unit (4) arranged for movement in a direction close to or away from said rotating table unit (3) between two positions of a cutting position at which said trimming unit (4) becomes close to said rotating table unit (3) so as to cut a top edge section (1a), a bottom edge section (1b) and a front edge section (1c) of the bound material (1), respectively, and a stand-by position at which said trimming unit (4) is away from said rotating table unit(3);

trimming unit guide means (5) arranged between said rotating unit (3) and said trimming unit (4);

drive means (6) for moving said trimming unit (4) along said trimming unit guide means (5) between said cutting position and said stand-by position;

a control unit (7) for controlling the operation of each of said rotating table unit (3), said trimming unit (4) and said drive means (6) in such a manner that said trimming unit (4) moves from said stand-by position to said cutting position for cutting the top edge section (1a), the front edge section (1c) and the bottom edge section (1b) of the bound material (1), respectively every time the bound material (1) is arranged at said top edge cutting position, said front edge cutting position and said bottom edge cutting position, said three-side trimmer characterized by receiving position changing means for horizontally shifting the position at which the table (10) of said rotating table unit (3) receives the bound material (1) from said bound material feed unit (2).