Offset printing machine

• US 6,779,446 B2
• Filed: 08/06/2003
• Issued: 08/24/2004
• 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): Eickholt, Eugene H.
• Application Number:
  US10/636,338
• Publication Number:
  US 20040025724A1
• Time in Patent Office: 384 Days
• Field of Search: 101/483, 101/177, 101/181, 101/216, 101/219, 101/226, 101/248, 493/415, 493/424, 493/429, 493/359
• US Class Current: 101/216
• 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 (1.1, 1.2)in a printing unit, for example, are driven respectively by separate electric motors (7) and are not in mechanical drive connection.

Claims

1. An offset printing machine comprising:

at least one printing unit (21-24);

a folder unit (26, 27, 27.1) having a first folding cylinder (144, 143, 145);

an angle-controlled electric motor (M);

and wherein said first folding cylinder is directly or indirectly driven by said electric motor.

2. The offset printing machine of claim 1, wherein said folding cylinder is directly driven by said electric motor.

3. The offset printing machine of claim 1, wherein said folding cylinder is a point folding blade cylinder (145) driven by said electric motor (M) via a belt drive (186).

4. The web-fed offset printing machine of claim 2, wherein said folding cylinder is driven by said electric motor via a drive connection comprising spur gears (8, 10, 19, 20).

5. A web-fed 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, 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 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 cylinder is driven directly or indirectly by a further separate electric motor (7) and a mechanical drive connection to one of said further cylinders when said further cylinder is not driven by a separate motor (1.1 to 1.5;

2.1 to 2.5);

said printing machine further comprising a length register device for setting the cutting register of a turned web, and wherein the cutting register of the web (155, 62) is set with said electric motor (7);

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 (25) can be set via the cylinder positions of all printing groups (58 to 61) taking part in the printing operation.

6. The web-fed offset printing machine of claim 5, wherein said mechanical drive connection comprises spur gears (8, 10, 19, 20).