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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
First Claim
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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).

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