Offset printing machine

• US 7,000,539 B2
• Filed: 11/12/2002
• Issued: 02/21/2006
• 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:
  US10/292,022
• Publication Number:
  US 20030066444A1
• Time in Patent Office: 1,197 Days
• Field of Search: 101/217, 101/216, 101/220, 101/219, 101/228, 101/181, 101/179, 101/178, 101180-185, 101136-140, 101142-145
• US Class Current: 101/217
• 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. A shaftless offset printing machine comprising:

at least one printing unit, said printing unit comprising at least two printing groups each composed of a blanket cylinder and an associated form cylinder;

each of said blanket cylinders being driven by a separate motor and being in drive connection via a spur gear with said associated form cylinder; and

a folder unit separately driven by a separate angle-controlled electric motor.

2. The offset printing machine of claim 1, wherein said folder unit comprises a first folding cylinder, and wherein said first folding cylinder is a knife cylinder.

3. The offset printing machine of claim 2, additionally comprising one or more further folding cylinders, each said further folding cylinder having a journal and spur gear connected to said journal;

and wherein said first folding cylinder has a spur gear operatively connected to said spur gear of said one or more further folding cylinder for driving the same.

4. The offset printing press as in claim 2 wherein the angle-controlled electric motor, the first folding cylinder, and the spur gear of the first folding cylinder are arranged coaxially.

5. A shaftless offset printing machine comprising:

at least one printing unit;

a folder unit having a first folding cylinder;

an angle-controlled electric motor with no drive connection to the at least one printing unit, said printing unit comprising at least two printing groups each composed of a blanket cylinder and an associated form cylinder;

each of said blanket cylinders being driven by a separate motor and being in drive connection via a spur gear with said associated form cylinder; and

a belt drive connecting the angle-controlled electric motor to the first folding cylinder.

6. The offset printing machine as in claim 5, wherein the first folding cylinder is a pin-folding blade cylinder.

7. The offset printing machine as in claim 5 wherein the folder comprises folding cylinders each having a journal and a spur gear connected to the journal, the first folding cylinder having a spur gear operatively connected to the spur gear of at least said further folding cylinders.