Printing cylinder sleeve application apparatus and method
AssigneeMAN Roland Druckmaschinen AG
InventorIngo Kobler
Life of this patent
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Abstract
To prevent shifting of an eccentric (12, 33) about a bearing (8, 26), which it surrounds to provide for adjustable positioning of a printing cylinder (3) in a printing machine, upon release of the eccentric from a sidewall (1) of a printing machine to permit placing a sleeve (15) over the cylinder, the eccentric, in accordance with the invention, is locked in position to the shaft of the cylinder, or to the sidewall, or a releasable jaw of the machine prior to release of the eccentric from clamp holding position between holding jaws (13, 27, 28) which, in operation, retain the eccentric in position on the machine.
Claims18
In combination wit a printing machine,
- a printing cylinder sleeve application apparatus (16) to apply a cover sleeve (15) on a printing cylinder (3,22, 23) retained by stub shafts in bearing means in the printing machine without disassembly of the cylinder from the printing machine;
- wherein the printing machine includes tow sidewalls (1, 2);
- said bearing means (8, 9;
- 46,49;
- 52, 55) rotatably retaining the printing cylinder (3, 22, 23) in the machine;
- adjustable positioning means (33) surrounding said bearing means and adjustably retaining said bearing means in said sidewalls of the machine to control the position of the printing cylinder in the machine;
- means (13, 14;
- 27, 28) releasably securing the adjustable positioning means in the sidewalls of the machine, and
- wherein at least one of the sidewalls of the machine is formed with an opening (7) in alignment with the printing cylinder,
- said sleeve application apparatus (16, 17) comprising means for carrying said sleeve (15) for application of said sleeve over the printing machine cylinder, and means for supporting the cylinder on the side adjacent said opening (7), after release of the adjustable positioning means from the sidewall of the machine,
- and means (57, 35, 36, 60) for maintaining and locking the relative position of the adjustable positioning means (12, 33), with respect to a predetermined reference position after release of the adjustable positioning means from the at least one sidewall of the machine and during application of said sleeve on the cylinder for maintaining the relative adjusted position of said cylinder in the machine after application of said sleeve and after re-securing the adjustable positioning means in the at least one sidewall while maintaining said bearing means and eccentric means in place on the cylinder ends said bearing means and adjustable positioning means remaining on said printing cylinder stub shafts during said sleeve application.
A method of applying a sleeve (15) on a cylinder (3, 22,23) of a printing machine,
- wherein the cylinder is retained in the printing machine in bearing means at the cylinder ends (8, 9;
- 26, 49;
- 52, 55);
- eccentric means (12, 33) surround selected ones of said bearing means to retain said bearing means, and hence the printing cylinder in a predetermined position in the machine, and including holding means (13, 28) holding the eccentric means in position on the machine, comprising the steps of
- locking the eccentric means in the predetermined position prior to release of the holding means to prevent rotation of the eccentric means about the bearing means upon release of the holding means;
- releasing the holding means;
- applying the sleeve (15) over the cylinder (3) while maintaining said bearing means and eccentric means in place on the cylinder ends;
- re-engaging the holding means on the eccentric means, whereby the previously established position of the cylinder with respect to the predetermined position will be maintained;
- and
- unlocking the eccentric means.
Dependencies are inferred from the claim text.