Offset printing machine
View Patent ↗The invention relates to the drive of a printing machine. Cylinders and functional groups are to be driven with low technical expenditure. To this end, all form cylinders in a printing unit, for example, are driven respectively by separate electric motors and are not in mechanical drive connection.
1. A drive for a rotary offset printing press comprising:
printing units having a first pair of cylinders ( 3 , 13 , 67 ) for transferring ink including a first form cylinder ( 1 . 1 , 1 . 4 , 69 ) and a first transfer cylinder ( 2 . 1 , 2 . 4 , 71 ) which are mechanically coupled and drivable via a first motor ( 7 , 198 ), a second pair of cylinders ( 4 , 14 , 68 ) for transferring ink including a second form cylinder ( 1 . 2 , 1 . 5 , 70 ) and a second transfer cylinder ( 2 . 2 , 2 . 5 , 72 ) which are mechanically coupled and drivable via a second motor ( 7 , 200 ); each said form cylinder ( 1 . 1 , 1 . 2 , 1 . 4 , 1 . 5 , 69 , 70 ) being associated with an inking unit and a damping unit;
a computer motor control and memory unit ( 56 , 57 , 73 , 74 ) for controlling the position of the motors ( 7 , 198 , 200 ); said first and second motors driving said transfer cylinders ( 71 , 72 ) and said transfer cylinders driving said respective form cylinders ( 69 , 70 ) via a meshing; or said first and second motors driving said form cylinders ( 1 . 1 , 1 . 2 , 1 . 4 , 1 . 5 ) and said form cylinders ( 1 . 1 , 1 . 2 , , 1 . 4 , 1 . 5 ) driving said respective transfer cylinders ( 2 . 1 , 2 . 2 , 2 . 4 , 2 . 5 ) via a meshing;
functional units ( 28 , 29 , 30 , 31 , 32 , 26 , 27 , 27 . 1 ) disposed outside said printing units ( 21 , 22 , 23 , 24 ) along a web ( 155 ) to be printed, said functional units comprising one or more rollers or cylinders ( 28 , 29 , 30 , 31 , 32 , 145 , 146 , 148 ), said rollers or cylinders being drivable individually or collectively by a motor for the functional unit ( 28 , 29 , 30 , 31 , 32 , 26 , 27 , 27 . 1 ).
2. The drive according to claim 1 , wherein said functional units ( 28 , 29 , 30 , 31 , 32 , 26 , 27 , 27 . 1 ) comprise a folding blade cylinder ( 145 , 146 , 148 ) without advance, and a cutting roller ( 30 ), a forming roller ( 31 ), a feeding and transfer roller ( 32 ) and a cooling roller ( 29 ) with adjustable advance.
3. The drive according to claim 1 , wherein said functional rollers and cylinders ( 29 , 30 , 31 , 32 , 145 ) are drivable via a belt.
4. The drive according to claim 2 , wherein said functional rollers and cylinders ( 29 , 30 , 31 , 32 , 145 ) are drivable via a belt.
5. The drive according to claim 1 , wherein said motors ( 7 , M) are angle-controlled motors.
6. The drive according to claim 1 , additionally comprising a driven satellite cylinder ( 16 ) disposed between said pairs of cylinders ( 3 , 4 , 13 , 14 ).
7. The drive according to claim 1 , additionally comprising a device ( 73 , 74 ) for controlling the circumferential register.
8. The drive according to claim 1 , wherein said pairs of cylinders ( 3 , , 4 , 13 , 14 ) are in drive connection with each other and, optionally, with a satellite cylinder ( 16 ).
9. The drive according to claim 1 , additionally comprising a motor control system ( 56 ) for storing a plurality of cylinder positions, said motor control system having an input side; and a computer and memory unit ( 57 ) connected to said input side of said motor control system for presetting said printing units ( 21 , 22 , 23 , 24 ) for adaptation to a different web path.
10. The drive according to claim 1 , additionally comprising a comparator ( 65 ); a sensor ( 63 ) for controlling the cutting register of a web to be printed ( 155 ); a position indicator ( 64 ) located on a drive side; said sensor ( 63 ) and said position indicator ( 64 ) being connected to an input side of said comparator ( 65 ); and a motor control system ( 66 ) connected to an output side of said comparator ( 65 ) for driving said motor with advance or lag to achieve a required position.
11. The drive according to claim 1 , additionally comprising a computing and memory unit ( 65 ) for storing cylinder positions for a cutting register; and wherein for controlling the cutting register a computer motor control system ( 66 ) is connected to an output side of said computing and memory unit ( 65 ).
12. The drive according to claim 1 , additionally comprising a side wall and bearing shields ( 123 , 124 ) in said sidewall and wherein at least one of said cylinders comprises a journal ( 117 ) seated in said bearing shields, said bearing shields being movable from a closed position for supporting said journal to an open position to permit insertion and removal of a blanket sleeve or a printing sleeve.
13. The drive according to claim 1 , wherein said motor (M) for said functional units ( 28 , 29 , 30 , 31 , 32 , 26 , 27 , 27 . 1 ) is drivable with adjustable advance.