Trimmer (bookbinding)
The trimmer is a machine used in industrial bookbinding . This machine is mainly used for trimming stapled brochures in saddle stitching systems.
functionality
The functional principle of the shear cut distinguishes this machine from the three-knife cutting machines and their predecessors, the three-knife trimmers . The three-sided trimming of the stapled brochures is carried out in a trimmer according to the shear cut principle . With this type of cut, a movable upper knife is moved against a fixed lower knife and the cut is made. The cutting takes place in two stations, with the head and foot trimming taking place simultaneously before or after the front cut . The cutting usually takes place when the product is at a standstill. If, however, knives are used that oscillate in the transport direction, the cut can also be made while moving in favor of high cycle rates (see also saddle stitching drum ). The shear cut principle is qualitatively inferior to the knife cut principle (three-knife cutting machines), since only a maximum of 1.5 cm can be cut. That is why the trimmer is not used in book production or perfect binding .
literature
- Dieter Liebau, Inés Heinze: Industrial bookbinding. Verlag Beruf + Schule, ISBN 978-3-88013-679-3
Individual evidence
- ^ Dieter Liebau, Inés Heinze: Industrielle Buchbinderei , 3rd edition, page 350, Verlag Beruf + Schule, 2010 ISBN 978-3-88013-679-3