Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F33/00—Indicating, counting, warning, control or safety devices
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F13/00—Common details of rotary presses or machines
  • B41F13/08—Cylinders
  • B41F13/10—Forme cylinders
  • B41F13/12—Registering devices
  • B41F13/14—Registering devices with means for displacing the cylinders
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
  • B41P2213/00—Arrangements for actuating or driving printing presses; Auxiliary devices or processes
  • B41P2213/10—Constitutive elements of driving devices
  • B41P2213/20—Gearings
  • B41P2213/202—Helical gears
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
  • B41P2213/00—Arrangements for actuating or driving printing presses; Auxiliary devices or processes
  • B41P2213/90—Register control

Definitions

• the invention relates to a method and a device for register control according to the preamble of claims 1, 2, 8, 10 or 12.
• a register control is known from DE 34 09 194 A1, wherein a relative movement of two cylinders in the circumferential direction takes place by means of an axial relative movement of two helical toothed gears.
• the side register is adjusted without the circumferential register being adjusted at the same time by relative movement of two additional straight toothed gears.
• a forme cylinder and the transfer cylinder cooperating with it can be driven in parallel by means of a motor.
• the forme cylinder is axially adjustable via a gear.
• the helical spur gear arranged on the pin of the forme cylinder is arranged to be axially movable on the pin for the purpose of circumferential register adjustment.
• DE 37 12 702 A1 discloses a printing unit having six cylinders, the cylinders of which are all in drive connection with one another via helical teeth.
• the cylinders are rotated by means of a drive gear on one of the six cylinders.
• Lateral displacement of the forme cylinder, and a resulting change in the circumferential register, is compensated for by determining the position of the forme cylinder and then moving the transfer cylinder in the same direction.
• US 37 17 092 A discloses a printing unit, the cylinders of which can be driven by a main drive via helical teeth. Two additional drives are provided for each printing unit to control the page and circumferential register intended. When the side register is adjusted, a correction of the error caused by the helical gearing is carried out by means of the drive for the circumferential register.
• the invention has for its object to provide a method and an apparatus for register control.
• the present register regulation also has a high degree of flexibility, since the electronic regulation is almost freely programmable and is not predetermined solely by mechanics.
• the regulation ensures a simple, fast and robust correction of the circumferential register in connection with the regulation of the side register without the need for additional drives or complex gears to correct the circumferential register.
• the drive train can be carried out entirely by means of helical teeth.
• the drive train can be arranged in an alignment or drive level. This also contributes to simplifying the mechanics and saving space.
• the drive can take place by means of a pinion from the drive motor to a gearwheel, or almost coaxially to the cylinder on its journal directly, possibly with the interposition of a planetary gear.
• the drive motor and the motor for the axial adjustment can be driven by means of the drive motor either on one of the two jointly driven cylinders, e.g. B. on the forme cylinder or transfer cylinder.
• the common drive of the two cylinders for. B. for the purpose of relative movement in the circumferential direction, no positive drive connection to another forme cylinder, for example a forme cylinder of another printing unit.
• Figure 1 is a schematic representation of a first embodiment for register control.
• Fig. 2 is a schematic representation of a second embodiment for register control.
• a printing unit of a printing press e.g. B. a rotary printing press
• the transfer cylinder 02 forms with a third cylinder, not shown, for. B. a second transfer cylinder of a second Printing unit or an impression cylinder a printing point.
• An inking unit assigned to the forme cylinder 01 and possibly a dampening unit are not shown.
• the second cylinder 02 can, for example for printing units from high pressure, also be designed as an impression cylinder 02, which in this case forms a printing point with the first forme cylinder 01.
• the two cylinders 01; 02 each have pins 03; 04 and stand by two on pins 03; 04 rotatably and axially immovably arranged, meshing gears 06; 07 (07 shown in dashed lines) in drive connection.
• the gears 06; 07 are designed in an advantageous embodiment for the strength and resilience of the drive connection with helical teeth.
• the two cylinders 01, 02 have a common drive 08, z. B. a drive motor 08 for the rotary drive of the cylinder 01; 02, which is designed, for example, as an electric motor and can be regulated with respect to its angular position.
• One of the cylinders 01; 02, in the example of the forme cylinder 01, has on one of its end faces a device (not described in more detail) for axially displacing the forme cylinder 01 by an amount ⁇ ⁇ L.
• a device for axially displacing the forme cylinder 01 by an amount ⁇ ⁇ L.
• This can be done by means of a hydraulically or motor-operated drive 09, which, however, allows a defined movement and a conclusion about the distance covered or the respective position, if necessary by means of additional sensors.
• this device is represented by the motor 09, by means of which the forme cylinder 01 can be moved axially, for example via a threaded spindle (not shown) or in some other way.
• the current position of the forme cylinder 01 can be read, for example, by means of a rotary potentiometer, which is in operative connection with the motor shaft, not shown.
• the motor 09 can also be designed to be controllable with respect to its rotational angle position, so that, for example, over the number of revolutions and the current angular position provide clear information about the axial position of the forme cylinder 01.
• the two cylinders 01 are driven; 02 from the drive motor 08 to the forme cylinder 01, the gear wheel 06 connected to the forme cylinder 01 also having a helically toothed drive wheel 11, for. B. a gear 11 such as with a pinion 11 of the drive motor 08, meshes.
• the drive motor 08 and the pinion 11 connected to a shaft 12 of the drive motor 08 are arranged fixed to the frame, but the forme cylinder 01 with the gearwheel 06 is movably mounted in the axial direction.
• the drive from the drive motor 08 on the gear 06 can u. U. also done via a gear.
• Both drives 08; 09, the drive motor 08 and the motor 09 are connected to a control device 13 which can specify a rotational angle position ⁇ or a change in the rotational angle position ⁇ for the drive motor 08 and the position 09 or the amount ⁇ L for the axial displacement for the motor 09 .
• the control device 13 can be connected downstream or upstream of a drive control 14, integrated in a machine control or also connected to a control center.
• the drive train can be aligned and that a side register control with correction of the circumferential register takes place via the angle of rotation position ⁇ without a change in an angle of rotation position of the transfer cylinder interacting with the web to be printed.
• Changing the angle of rotation position ⁇ is to be understood to mean a relative angle of rotation position ⁇ and not the operational angular velocity.
• the relative change is the operational angular velocity or angular position z. B. superimposed.
• FIG. 2 the two cylinders 01 are driven; 02 on the transfer cylinder 02, for example coaxially to an axis of rotation of the transfer cylinder 02 on its pin 04.
• the gearwheel 06 can be driven to an inking unit (not shown) and / or a dampening unit while maintaining a clear torque flow and thus with a reduced risk of tooth flank changes.
• An axial displacement of the forme cylinder 01 by an amount .DELTA.L takes place here in that the value for the change in the rotational angle position .DELTA..phi. Is determined again in the control device 13 and the two values to the drives 08; 09, the drive motor 08 and the motor 09 are given.
• the register control is also of great advantage for a forme cylinder 01 which is driven independently of the transfer cylinder 02 by its own drive motor 08 (independence is symbolized in FIG. 1 by the dashed line of the gear 07).
• the correction carried out via a stored dependency between the change in the axial direction ⁇ L and the required change in the rotational angle position ⁇ is fast and robust. Any readjustment that may be required within the framework of the existing regulation for the circumferential register can be carried out without large swings and without a longer swinging. Ideally, no readjustment or reverberation occurs in the circumferential register.
• the coupling of the drive motor 08 from the first exemplary embodiment (FIG. 1) can also be transferred to the second exemplary embodiment (FIG. 2) and vice versa. If, in the first exemplary embodiment (FIG. 1), the forme cylinder 01 is driven coaxially, a variable-length coupling, not shown, must be arranged between the drive motor 08 and the forme cylinder 01, which takes up the axial path when the axial position ⁇ L of the forme cylinder 01 changes.
• the drive system of the two exemplary embodiments (FIGS. 1 and 2), from the two cylinders 01; 02 and possibly the dye and u.
• U. a dampening system has none positive drive connection to a further forme cylinder possibly arranged in the printing press. In an advantageous embodiment, it also has no positive drive connection with a cooperating printing unit or an impression cylinder.
• an axial position of the forme cylinder 01 is changed by an amount ⁇ L in conjunction with a corresponding change in the angular position ⁇ of the drive 08.
• the values for the relationships between ⁇ and ⁇ L can be stored as a function ⁇ ( ⁇ L) or as a table of values in the control device 13.
• time ramps for the two movements that are to be carried out as synchronously as possible by the drives 08; 09 are determined or deposited.
• the values or the function can e.g. B. be defined on the effective radius ratios and the slope of the toothing on the forme cylinder. The relationship is always specified according to the helical gearing, which enables trouble-free printing. A readjustment of the circumferential register following a page register regulation can thus be avoided or at least greatly reduced.
• the information about the position L or position change ⁇ L in the control device 13 can also be used directly to change the angle of rotation position ⁇ accordingly. In this case too, the correction is not made only by measuring an error that occurs, but in direct connection with the axial position L or its change ⁇ L.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Rotary Presses (AREA)
• Inking, Control Or Cleaning Of Printing Machines (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=7681698

Family Applications (1)

Country Status (4)

Families Citing this family (2)

Family Cites Families (5)

• 2001
  • 2001-04-17 DE DE10164651A patent/DE10164651A1/de not_active Withdrawn
  • 2001-11-08 EP EP01274113A patent/EP1392510B1/fr not_active Expired - Lifetime
  • 2001-11-08 AT AT01274113T patent/ATE294065T1/de not_active IP Right Cessation
  • 2001-11-08 WO PCT/DE2001/004200 patent/WO2002083420A1/fr not_active Application Discontinuation

Non-Patent Citations (1)

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