Device for trimming a print product

摘要

A print product trimming device trims the forward edge of a print product supplied to it and has a stationary trimming knife having a knife shaft and a cutting edge attached to the knife shaft, a rotating drum, at least one counter knife attached to the rotating drum for rotating in a rotational direction and cooperating with the stationary knife along a circular cutting path. The trimming knife extends approximately transverse to the rotational direction of the counter knife. The cutting edge is a spiral cutting edge along surface lines of a cylindrical section that is formed by a cutting path of the counter knife. The knife shaft extends along the surface lines of the cylindrical section.

主权项

1. A trimming device for trimming a side edge of a print product supplied to the trimming device, said device comprising:
a knife carrier including an inclined clamping surface; a trimming knife having a knife shaft and a cutting edge attached to the knife shaft, wherein the knife shaft is detachably mounted on the inclined clamping surface of the knife carrier, and wherein the trimming knife remains stationary during trimming of the side edge of the print product; a rotating drum; at least one counter knife attached to the rotating drum for rotating about an axis in a rotational direction and cooperating with the trimming knife along a circular cutting path; wherein the trimming knife extends approximately transverse to the rotational direction of the counter knife, wherein the cutting edge is a spiral cutting edge along surface lines of a cylindrical section that is formed by the circular cutting path of the counter knife, wherein the knife shaft extends along the surface lines of the cylindrical section, wherein the trimming knife is positioned within the circular cutting path of the at least one counter knife attached to the rotating drum, wherein the inclined clamping surface ascends and/or descends relative to the axis and corresponding to the spiral cutting edge, and wherein the trimming knife is displaceable along the circular cutting path to adjust a cutting position when the trimming device is not operating.