Servo driven apparatus for trimming and transporting printed products in a trimmer
A book trimmer is provided including an edge trimming knife driven by a drive motor and a conveyor downstream of the edge trimming knife driven by a servo motor. The drive motor also drives a section of the conveyor.
1 . A book trimmer comprising:
an edge trimming knife driven by a drive motor; and
a conveyor downstream of the edge trimming knife driven by a servo motor, the drive motor also driving a section of the conveyor.
2 . The book trimmer recited in claim 1 wherein the conveyor transports a book to the edge trimming knife to be trimmed and the edge trimming knife trims the book.
3 . The book trimmer recited in claim 2 wherein the servo motor drives the conveyor so the conveyor operates at a speed equal to a speed of the edge trimming knife as the edge trimming knife trims the book.
4 . The book trimmer recited in claim 1 further comprising a second edge trimming knife downstream of the edge trimming knife.
5 . The book trimmer recited in claim 4 wherein the second edge trimming knife is also driven by the drive motor.
6 . The book trimmer recited in claim 4 wherein the conveyor transports a book to the second edge trimming knife to be trimmed and the second edge trimming knife trims the book.
7 . The book trimmer recited in claim 4 wherein the servo motor drives the conveyor so the conveyor transports a book at a speed equal to a speed of the second edge trimming knife as the edge trimming knife trims the book.
8 . The book trimmer recited in claim 1 wherein the conveyor is comprised of a belt and a pulley and the servo motor drives the pulley.
9 . The book trimmer recited in claim 1 wherein the conveyor is comprised of:
a first pulley;
a first belt traveling over the first pulley;
a second pulley; and
a second belt traveling over the second pulley;
the servo motor driving the first pulley and the second pulley being geared to the first pulley.
10 . The book trimmer recited in claim 1 further comprising a second servo motor wherein the conveyor is comprised of:
a first pulley;
a first belt traveling over the first pulley;
a second pulley; and
a second belt traveling over the second pulley;
the servo motor driving the first pulley and the second servo motor driving the second pulley.