Multicolor printing press

A multicolor printing press comprising:

• a plurality of printing sections arranged in vertical alignment, a plurality of said printing sections including a first printing section and at least one sectioned printing section, each of said printing sections being constructed to form a blanket to blanket printing press incorporating
• a pair of plate cylinders respectively carrying printing plates, each of said plate cylinders being separated into axially aligned a first plate cylinder component and a second plate cylinder component for rotation at independently adjustable rotational phases;
• a pair of blanket cylinders respectively carrying blankets and associated with said plate cylinders for receiving printing pattern of said printing plates to transfer onto both sides of a printing medium, said blanket cylinders having slightly different finished diameters from that of said plate cylinders;
• and
• a drive train for driving said plate cylinders and said blanket cylinders in synchronism with each other with maintaining desired phase relationship therebetween, said drive train establishing a path for power transmission so that the driving power is first transmitted to one of said plate cylinders and said blanket cylinders having smaller finished diameter and subsequently to the other;
• means for rotatably supporting said first plate cylinder in a fixed register position for providing reference position in adjustment of register position in said second printing section;
• means for rotatably supporting said second plate cylinder in a movable position for adjustment of register position thereof relative to said reference position defined by said first plate cylinder, said supporting and adjusting means being associated with each of said first and second cylinder components for independent adjustment so as to adjust position of associated one of said first and second cylinder components in the axial direction relative to the other for fine adjustment of the register positions relative to said reference position;
• said drive train comprising:
• respective shafts supporting said blanket cylinders;
• a pair of engaged first transfer gears rigidly mounted on respective first axial ends of said shafts of said blanket cylinders;
• a pair of engaged second transfer gears rigidly mounted on said respective first axial ends of said shafts of said blanket cylinders;
• respective shafts supporting said first plate cylinder components;
• a pair of first driven gears rigidly mounted on respective axial ends of said shafts of said first plate cylinder components, and said first driven gears engaged with the first transfer gears respectively;
• respective shafts supporting said second plate cylinder components;
• a pair of second driven gears rigidly mounted on respective axial ends of said shafts of said second plate cylinder components, and said second driven gears engaged with the second transfer gears respectively;
• an intermediate gear connectable to a power source and engaged with one of the first transfer gears for delivery of driving torque thereto;
• said driving power transmission path being established by, transferring driving torque on said one of said first transfer gears of one of said first drive gears and to the other of the transfer gears, transferring driving torque on said other of said first transfer gears to the other of said first driven gears transmitting driving torque on said both of the first transfer gears to the second transfer gears through the shafts of the blanket cylinders, and transferring the driving torque on the second transfer gears to respective of said second driven gears.

A multicolor printing press comprising:

• a plurality of printing sections arranged in vertical alignment, a plurality of said printing sections including a first printing section having a first printing assembly which includes at least one first plate cylinder positioned below a first blanket cylinder, first ink arrangement and first dampening arrangement which first and arrangement and said first dampening arrangement are positioned at lower position relative to said first plate cylinder, and at least one second printing section having a second printing assembly which includes at least one second plate cylinder positioned below a second blanket cylinder, a second ink arrangement and a second dampening arrangement which second ink arrangement and said second dampening arrangement are positioned at lower position relative to said second plate cylinder, said first and second blanket cylinders being provided with slightly smaller finished diameter than that of said plate cylinders;
• a drive train for driving said plate cylinders and said blanket cylinders in synchronism with each other with maintaining desired phase relationship therebetween, said drive train establishing a path for power transmission so that the driving power is first transmitted to one of said plate cylinders and said blanket cylinders having smaller finished diameter and subsequently to the other cylinders having greater finished diameter;
• means for rotatably supporting said first plate cylinder in a fixed register position for providing reference position in adjustment of register position in said second printing section;
• and
• means for rotatably supporting said second plate cylinder in a movable position for adjustment of register position thereof relative to said reference position defined by said first plate cylinder,
• said drive train comprises:
• respective shafts supporting said blanket cylinders;
• a pair of engaged first transfer gears rigidly mounted on axial ends of cylinder shafts of said blanket cylinders at said first axial end portion;
• a pair of engaged second transfer gears rigidly mounted on axial ends of cylinder shafts of said blanket cylinders at said second axial end portion;
• respective shafts supporting said first plate cylinder components;
• a pair of first driven gears rigidly mounted on the axial ends of cylinder shafts of aid first plate cylinder components at said first axial end portion;
• respective shafts supporting said second plate cylinder components;
• a pair of second driven gears rigidly mounted on the axial ends of cylinder shafts of said second plate cylinder components at said second axial end portion;
• and
• an intermediate gear connectable to a power source and engaged with one of the first transfer gears for delivery of driving torque thereto,
• said driving power transmission path being established by connecting one of said first transfer gears to a driving power source, transferring driving torque on said one of first transfer gears to one of said fist driven gears, transmitting driving torque on said one of said first driven gears to the other of said first transfer gears via said intermediate gear, transferring driving torque on said the other of said first transfer gears to the other of said first driven gears, transmitting driving torque on said both of said first transfer gears to said second transfer gears via said cylinder shafts of said blanket cylinders, and transferring the driving torque on said second transfer gears to respective of said second driven gears.

A multicolor printing press comprising:

• a plurality of printing sections arranged in vertical alignment, a plurality of said printing sections including a first printing section having a first printing assembly which includes at least one fist plate cylinder positioned below a fist blanket cylinder, first ink arrangement and first dampening arrangement which first and arrangement and said first dampening arrangement are positioned at lower position relative to said first plate cylinder, and at least one second printing section having a second printing assembly which includes at least one second plate cylinder positioned below a second blanket cylinder, a second ink arrangement and a second dampening arrangement which second ink arrangement and said second dampening arrangement are positioned at lower position relative to said second plate cylinder, said first and second blanket cylinders being provided with slightly smaller finished diameter than that of said plate cylinders;
• a drive train for driving said plate cylinders and said blanket cylinders in synchronism with each other with maintaining desired phase relationship therebetween, said drive train establishing a path for power transmission so that the driving power is first transmitted to one of said plate cylinders and said blanket cylinders having smaller finished diameter and subsequently to the other cylinders having greater finished diameter;
• means for rotatably supporting said first plate cylinder in a fixed register position for providing reference position in adjustment of register position in said second printing section;
• and
• means for rotatably supporting said second plate cylinder in a movable position for adjustment of register position thereof relative to said reference position defined by said first plate cylinder,
• said drive train comprises:
• a pair of engaged first transfer gears rigidly mounted on first axial ends of the shafts of said first plate cylinder component;
• a pair of engaged second transfer gears rigidly mounted on second axial ends of the shafts of said first plate cylinder components;
• a pair of first driven gears rigidly mounted on respective of first axial ends of shafts of said blanket cylinders, and engaged with the first transfer gears respectively;
• a pair of second driven gears rigidly mounted on the second axial ends of the shafts of said second plate cylinder components, and engaged with the second transfer gears respectively;
• an intermediate gear engaged with one of said first transfer gears and also engaged with one of the first driven gears;
• and
• said driving power transmission path being established by supplying driving torque of a driving power source to one of said first transfer gears, transferring the driving toque on said one of said first transfer gears to one of said first driven gears and to one of said second transfer gears through said shaft of one of said first plate cylinder components, transferring the driving torque on said one of the direst driven gears to the other of said first transfer gears through said intermediate gear, transferring the driving torque on the other of said first transfer gears to the other of said first driven gears and to the other of said second transfer gears through said shaft of the other first plate cylinder components, and transferring driving torque on respective of said second transfer gears to respective of said second driven gears.