Washing and cleaning device for cylinders, especially printing form cylinders and offset blanket cylinders in a printing machine
View Patent ↗An erasing and cleaning apparatus for cylindrical surfaces including a cleaning cloth transporting device which can be packaged with a cleaning cloth in a cassette. The cassette is exchangeably inserted between side walls of a positioning unit, the positioning unit being connectable with a drive for driving transporter device. A lateral guide is arranged in a printing press and includes a carriage and a device for moving the positioning unit between a first position, in the which the transporter is moved onto the cylindrical surface to be cleaned, and an out-of-contact position, at which said cassette is laterally removable from the positioning unit. The erasing and cleaning apparatus further includes at least one coupling module for selectively coupling and decoupling a removable one of the sidewalls of the positioning unit to and from the cassette.
1. An erasing and cleaning apparatus for cylindrical surfaces including printing forms and blanket cylinders of a printing press, comprising:
a cassette including means for transporting a cleaning cloth, said means for transporting being packageable with the cleaning cloth in said cassette;
a positioning unit having a superstructure for accommodating said cassette and including sidewalls connected by a crossmember, said cassette being exchangeabley inserted between said sidewalls of said positioning unit, said positioning unit being drivable for driving said means for transporting;
a lateral guide arrangeable in the printing press comprising a carriage and means for moving the positioning unit between a first position, in the which the means for transporting is moved onto the cylindrical surface to be cleaned, and an out-of-contact position, at which said cassette is laterally removable from said positioning unit, said carriage comprising two telescopically displaceable pairs of double rails connectable to the printing press, each of said double rails comprising a fixed rail and a moveable rail, said carriage being connected to said movable rails; and
at least one coupling module for selectively coupling and decoupling a removable one of said sidewalls of said positioning unit and said cassette, wherein said coupling module is pivotally mounted with said removable one of said side walls on one of said movable rails, said coupling module comprising a housing, shaft journals for producing a form-fitting and force transmitting connection, said shaft journals being mounted in said housing by a spring loaded mounting, and a transversely movable cam element comprising cams for securing said shaft journals against a spring force of the spring loaded mounting.
2. The erasing and cleaning apparatus of claim 1 , wherein each of said pairs of double rails includes means for moving said positioning unit relative to said movable rails and means for moving said moveable rails relative to said fixed rails, each of said means for moving comprising one of hydraulic and pneumatic cylinders.
3. The erasing and cleaning apparatus of claim 1 , further comprising one of a hydraulic and pneumatic cylinder actuatable for moving said movable cam for terminating the force counter to the spring force acting on said shaft journals, thereby permitting said shaft journals to decouple from said means for transporting and move into said housing by the spring force, said removable one of said sidewalls being removable and said movable rail connected to said removable one of said side walls being movable when said shaft journals are decoupled for exposing said cassette and allowing lateral removal thereof from said positioning unit.
4. The erasing and cleaning apparatus of claim 2 , further comprising additional means for transporting a cleaning cloth, further spring-loaded shaft journals and a further cam element for securing said further shaft journals against a spring force of the spring loaded mounting.