Device and method for removing the jacket from cliche rollers in printing machines
A printing plate cylinder and printing machine technology, which is applied to the general parts of printing machinery, printing machines, rotary printing machines, etc., can solve the problems of machine damage, broken fragments, operator injuries, etc., to reduce production losses, easy operation, The effect of safe operation
Active Publication Date: 2009-07-22
FUTURA SPA
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Since the operator must first connect the compressed air line and then remember to disconnect it before restarting the machine, there is potential for injury to the operator as well as damage to the machine
In fact, if the tubes are not separated after the plate jacket has been replaced and before restarting the machine, the tubes, cylinders and other parts of the machine may break and the corresponding fragments could cause injury to the operator
Method used
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Embodiment Construction
[0029] Although the invention has been described with reference to the embodiments shown in the drawings, it should be understood that the invention can take many alternative embodiments.
[0030] Generally speaking, the device according to the invention can be used for removing jackets from plate cylinders in printing presses and the like. In such machines, the drum is motorized so as to be driven in rotation about its own longitudinal axis, the drum is provided with an air inlet which can be connected on one side to a source of compressed air , while on the other side it is connected with a number of radial holes across the drum and can be used to obtain the deformation of the sheath fitted on the drum. The device according to the invention comprises: means for automatically connecting said inlet with delivery means connected to said source of compressed air; and means for detecting the position of said air inlet with respect to said delivery means, adapted to allow them to ...
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Device for the substitution of a cliché-jacket from a cliché cylinder in a printing machine or the like wherein said cylinder (1) is connected to a motor (3) driving it into rotation about its longitudinal axis and is provided with radial holes connected with an air inlet (7), the latter being apt to be connected with a compressed air supply (6) by means of a delivery means (8), device characterized in that it comprises automatic means sensing the position of said air inlet (7) relative to said delivery means (8) and automatic means for positioning said air inlet (7) and said delivery means in a reciprocal coupling position, said automatic sensing and positioning means being connected to a programmable electronic unit (E) which, when said air inlet (7) and said delivery means (8) are coaxial, drives said coupling and switches on an on-off valve (60) which, on a side, is connected to said compressed air supply (6) and, on the other side, is connected to said delivery means (8).
Description
technical field [0001] The present invention relates to an apparatus and method for removing a jacket from a plate cylinder in a printing press. In particular, although not exclusively, the apparatus and method are intended for use in machines of the type that form prints on webs or piles of paper for the production of kitchen paper webs, toilet paper rolls and the like. Background technique [0002] Printing presses of the above-mentioned type (also known as flexographic printing presses) are known comprising a cylinder to which the web to be printed is fed and at least one plate cylinder on which printing ink is distributed and from which the ink is transferred onto the web to be printed on. To distribute ink to the plate cylinder, a unit commonly called a "pack" is provided, which consists of an ink reservoir, a distributor that receives ink from the reservoir and transfers it by contact to the plate cylinder or "anilox" roll, and two doctor blades located between and a...
Claims
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IPC IPC(8): B41F27/10B41F13/16B41F13/10
CPCB41F27/105
Inventor S·彼得里
Owner FUTURA SPA