Offset printing machine

• US 7,146,908 B2
• Filed: 07/27/2005
• Issued: 12/12/2006
• Est. Priority Date: 08/30/1994
• Status: Expired due to Fees

• Current Assignee: Manroland AG (Allianz Se)
• Original Assignee: Man Roland Druckmaschinen AG (Allianz Se)
• Inventors: Schramm, Michael, Hajek, Josef, Gröbner, Peter, Königer, Johann
• Primary Examiner(s): Nguyen, Anthony H
• Application Number:
  US11/190,708
• Publication Number:
  US 20050284318A1
• Time in Patent Office: 503 Days
• Field of Search: 101/233, 101/232, 101/216, 101/212, 101/217, 101/220, 101/219, 101/218, 101/181, 101/179
• US Class Current: 101/219
• CPC Class Codes: B41F 13/0045 Electric driving devices
• CPC Class Codes: B41F 13/28 Bearings mounted eccentrically of the cylinder axis
• CPC Class Codes: B41F 13/56 Folding or cutting
• CPC Class Codes: B41F 7/02 for offset printing
• CPC Class Codes: B41F 7/025 Multicolour printing or perfecting on sheets or on one or more webs, in one printing unit
• CPC Class Codes: B41P 2213/734 each printing unit being driven by its own electric motor, i.e. electric shaft

Abstract

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.

Claims

1. A shaftless web-fed rotary offset printing machine comprising:

printing units having at least one form cylinder and one transfer cylinder (1.1 to 1.5;

2.1 to 2.5); and

at least one folder unit (25); and

wherein, for each printing unit during operation of the printing machine, at least one of said form and transfer cylinders (1.1 to 1.5;

2.1 to 2.5) has a drive connection to a first separate electric motor;

said at least one cylinder (1.1 to 1.5;

2.1 to 2.5) having one selected from the group consisting of no mechanical drive connection to a further one of said cylinders (1.1 to 1.5;

2.1 to 2.5) when said further cylinder is driven directly or indirectly by a further separate electric motor, and a mechanical drive connection to one of said further cylinders(1.1 to 1.5;

2.1 to 2.5) when said further cylinder is not-driven by a separate electric motor;

said printing machine further comprising a motor control system (41, 52, 56, 66, 73) for said at least one electric motor for adjusting a printing group (3, 4, 12, 13, 14, 24, 25, 46, 47, 58 to 61, 67, 68) and for presetting said printing units for adaptation to a different web path, said motor control system having an input side;

a computing and memory unit (45, 52, 57, 65, 74) for storing a plurality of cylinder positions connected to said input side of said motor control system; and

said folder unit comprising a folding mechanism (26, 27, 27.1) having a folding cylinder (146, 148, 145) and a second separate electric motor (M) and whereby said folding cylinder (146, 148, 145) of said folding mechanism (26, 27, 27.1) is directly or indirectly driven by said second separate electric motor (M).

4. The shaftless web-fed rotary offset printing machine of claim 1, wherein said at least one of said form and transfer cylinder is driven directly by said first separate electric motor.

2. A shaftless web-fed rotary offset printing machine comprising printing units having at least one form cylinder including a clamping channel for carrying a plate and at least one transfer cylinder (1.1 to 1.5;

2.1 to 2.5);

at least one folder unit (25); and

wherein, for each printing unit during the operation of the printing machine, at least one of said form and transfer cylinders (1.1 to 1.5;

2.1 to 2.5) has a drive connection to a first separate electric motor (7), said at least one cylinder (1.1 to 1.5;

2.1 to 2.5) having one selected from the group consisting of no mechanical drive connection to a further one of said cylinders (1.1 to 1.5;

2.1 to 2.5) when said further one of said cylinders is driven directly or indirectly by a further separate electric motor (7), and a mechanical drive connection to one of said further cylinders(1.1 to 1.5;

2.1 to 2.5), when said further cylinder is not-driven by a separate electric motor;

a motor control system (73) for controlling said electric motor driving said one form cylinder (69, 70) or transfer cylinder (71, 72) for rotating said clamping channel (75, 76) of said form cylinder (69, 70) into a position for changing the plate, said motor control system having an input side;

a computing and memory unit (74), connected to said input side for storing a cylinder position to be set for a plate change; and

said folder unit comprising a folding mechanism (26, 27, 27.1) having a folding cylinder (146, 148, 145) and a second separate electric motor (M) and whereby said folding cylinder (146, 148, 145) of said folding mechanism (26, 27, 27.1) is directly or indirectly driven by said second separate electric motor (M).

5. The shaftless web-fed rotary offset printing machine of claim 2, wherein said at least one of said form and transfer cylinder is driven directly by said first separate electric motor.

3. A shaftless web-fed rotary offset printing machine comprising printing units having at least one form cylinder and one transfer cylinder (1.1 to 1.5;

2.1 to 2.5); and

at least one folding unit (25); and

wherein, for each printing unit during the operation of the printing machine, at least one of said form and transfer cylinders (1.1 to 1.5;

2.1 to 2.5) has a drive connection to a first separate electric motor, said at least one cylinder having one selected from the group of no mechanical drive connection to a further one of said cylinders (1.1 to 1.5;

2.1 to 2.5) when said cylinder is driven directly or indirectly by a further separate electric motor, and a mechanical drive connection to one of said further cylinders where said cylinder is not-driven by a separate electric motor;

said printing machine further comprising a length register device for setting the cutting register of a turned web, and wherein said cutting register of the web (155, 62) is set with said electric motor;

said printing machine further comprising a motor control system (56, 66) for said electric motor (7) of a printing group (58 to 61) that prints the web (155, 62) and having an input side;

a computing and memory unit (57) connected to said input side for storing the cylinder positions for the cutting register for possible web runs in order to set the cylinder (2.1 to 2.5) of all printing groups (58 to 61) that print the web (155, 62) into a predetermined position for the respective web run, so that the cutting register relating to the cutting in said folder unit can be set via the cylinder positions of all printing groups (58 to 61) taking part in the printing operation; and

said folder unit comprising a folding mechanism (26, 27,27.1) having a folding cylinder (146, 148, 145) and a second separate electric motor (M) and whereby said folding cylinder (146, 148, 145) of said folding mechanism (26,27, 27.1) is directly or indirectly driven by said second separate electric motor (M).

6. The shaftless web-fed rotary offset printing machine of claim 3, wherein said at least one of said form and transfer cylinder is driven directly by said first separate electric motor.