Spring element for fixing in place printing forms on printing form cylinders
AssigneeHeidelberger Druckmaschinen AG
InventorsChristophe Noiret, Francois Recolet
Life of this patent
Estimating the term…
Abstract
A device for fastening printing forms (10) on printing form cylinders (1) of rotary printing presses. The printing forms (10) extend into a clamping channel (3) with their leading edge (12) and their trailing edge (13) and are tensioned therein, via clamping elements, on the lateral surface (2) of the printing form cylinder (1) in a circumferential direction of the printing form cylinder (1) and retained in the clamping channel (3). The clamping elements are accommodated on a tensioning shaft (6) which is rotatably inserted in a bore of the printing form cylinder (1). The clamping elements are designed as spring elements (16, 27) in Y-shape (21), including a first and a second resilient section (17, 19).
Claims9
A device for fastening a printing form having a leading edge and a trailing edge onto a printing form cylinder of a rotary printing press, the leading edge and the trailing edge being tensioned and retained in a clamping channel of the printing form cylinder, the device comprising:
- a tensioning shaft;
- and
- at least one clamping element accommodated on the tensioning shaft;
- the at least one clamping element being a Y-shaped spring element including a first and a second resilient section,
- wherein the first and second resilient sections are made of flexurally elastic material of different material thickness, and
- wherein the first resilient section has an angularly bent, hook-shaped end for grasping the trailing edge of the printing form.
A printing for cylinder in a printing unit of a rotary printing press comprising:
- an outer surface having an axially-extending clamping channel;
- and
- a device for fastening a printing for having a leading edge and trailing edge, the leading edge and trailing edge being tensioned and retained in the clamping channel, the device including:
- a tensioning shaft;
- and
- at least one clamping element accommodated on the tensioning shaft;
- the at least one clamping element being a Y-shaped spring element including a first and a second resilient section,
- wherein the first and second resilient sections are made of flexurally elastic material of different material thickness, and
- wherein the first resilient section has an angularly bent, hook-shaped end for grasping the trailing edge of the printing form.
Dependencies are inferred from the claim text.