Patent ID: 6520058
Filing Date: 2003-02-18
Classification: B26D,Y10S,Y10T

Abstract:
A three-side trimmer comprising:a frame; a cutting table supporting a bound material to be trimmed thereon; a top edge trimming cutter attached to said frame for upward and downward movement, and cutting a top edge of said bound material; a bottom edge trimming cutter attached to said frame for upward and downward movement and in parallel with said top edge trimming cutter, and cutting a bottom edge of said bound material; a front edge trimming cutter attached to said frame for upward and downward movement at right angle with respect to said top edge trimming cutter and said bottom edge trimming cutter with predetermined distances from one ends of said top edge trimming cutter and said bottom edge trimming cutter, and cutting a front edge of said bound material; a drive mechanism for effecting the upward and downward movement of said top edge trimming cutter, said bottom edge trimming cutter and said front edge trimming cutter; first and second blade receiving plates attached to face said top edge trimming cutter and said bottom edge trimming cutter right under said top edge trimming cutter and said bottom edge trimming cutter, respectively on said cutting table for receiving blade edges of said top edge trimming cutter and said bottom edge trimming cutter, respectively; a third blade receiving plate attached to face said front edge trimming cutter right under said front edge trimming cutter on said cutting table for receiving a blade edge of said front edge trimming cutter; a pressing plate attached to said frame for upward and downward movement, and pressing said bound material against said cutting table; said top edge trimming cutter and said bottom edge trimming cutter being arranged to move relatively to each other in a direction parallel to the length of said front edge trimming cutter in accordance with a size of said bound material; said cutting table comprising first and second table elements movable relatively to each other along the direction of movement of said top edge trimming cutter and said bottom edge trimming cutter, and a stationary third table element; first and second blade receiving plates attached to said first and second table elements, respectively, and a third blade receiving plate attached to said third table element; and a chuck mechanism gripping said bound material to be trimmed so as to move said bound material between at least two positions of a first cutting position at which said bound material is cut by said top edge trimming cutter and said bottom edge trimming cutter, and a second cutting position at which said bound material is cut by said front edge trimming cutter.