Printing group pertaining to a printing machine having a linearly displaceable transfer cylinder
OwnerRalf Christel, Oliver Hahn +2inventors
InventorsRalf Christel, Oliver Hahn, Karl Schaschek, Georg Schneider
Life of this patent
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Abstract
A printing group of a printing machine is comprised of at least two cylinders, a forme cylinder and a transfer cylinder. The transfer cylinder can be moved between a print-on position and a print-off position along a linear adjustment path. Both of the cylinders in the printing group can be driven mechanically to rotate independently of another printing group. This rotation is accomplished by at least one drive motor which is fixed on a frame of the printing machine.
Claims46
A printing group of a printing press comprising:
- a forme cylinder;
- a transfer cylinder engageable with said forme cylinder;
- a counter-pressure cylinder, said transfer cylinder being supported for movement along a linear actuating path between a print-on position in contact with said counter-pressure cylinder and a print-off position out of contact with said counter-pressure cylinder;
- a drive motor adapted to drive said transfer cylinder and said forme cylinder mechanically independently of said counter-pressure cylinder, said drive motor being fixed in place on a frame;
- and
- a rotating shaft of said forme cylinder, said rotating shaft being fixed in place on said frame while said forme cylinder is brought into and out of contact with said transfer cylinder, said forme cylinder being adjustably seated.
A printing group of a printing press comprising:
- a forme cylinder;
- a transfer cylinder engageable with said forme cylinder;
- a counter-pressure cylinder, said transfer cylinder being supported for movement along a linear actuating path including a print-on position in contact with said counter-pressure cylinder;
- rotating shafts for each of said cylinders, said rotating shafts being located in a common plane when said printing group is in said print-on position;
- linear guide devices usable to move said transfer cylinder along said linear actuating path;
- and
- a frame receiving said rotating shafts of said forme cylinder, said forme cylinder being adjustably seated in respect to said transfer cylinder;
- said transfer cylinder, during movement along said linear actuating path into contact with said forme cylinder and said counter-pressure cylinder, and out of contact with said forme cylinder and said counter-pressure cylinder, deviating from said plane.
A printing group of a printing press comprising:
- a forme cylinder;
- a transfer cylinder engageable with said forme cylinder;
- a counter-pressure cylinder, said transfer cylinder being supported for movement along a linear actuating path between a print-on position in contact with said counter-pressure cylinder and a print-off position out of contact with said counter-pressure cylinder, said transfer cylinder being in contact with said counter-pressure cylinder in said print-on position via a web of material;
- rotating shafts of said at least transfer cylinder and said forme cylinder, said rotating shafts defining a common plane in said print-on position, said common plane intersecting a plane of said web at a first, obtuse angle;
- and
- means for moving said transfer cylinder along said linear actuating path, a second angle between said linear actuating path and said web plane lying between 5° and 30°, and a third angle between said linear actuating path and said common plane pointing in a direction of said forme cylinder being at least 90°, said first angle being between 95° and 110°.
A printing group of a printing press comprising:
- a forme cylinder;
- a transfer cylinder engageable with said forme cylinder;
- a counter-pressure cylinder, said transfer cylinder being supported for movement along a linear actuating path between a print-on position in contact with said counter-pressure cylinder and a print-off position out of contact with said counter-pressure cylinder;
- at least a first drive motor adapted to drive at least one of said transfer cylinder and said forme cylinder mechanically independently of said counter-pressure cylinder, said at least first drive motor being movable with said transfer cylinder along said linear actuating path;
- a bearing housing supporting said transfer cylinder for movement along said linear activating path;
- and
- first and second linear guide devices supporting each said bearing housing for movement with respect to a lateral frame of the printing group, said first and second linear guide devices being parallel to each other.
Dependencies are inferred from the claim text.