EP0771648A1 - Dispositif de rattrapage de jeu dans une machine d'impression - Google Patents

Dispositif de rattrapage de jeu dans une machine d'impression Download PDF

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Publication number
EP0771648A1
EP0771648A1 EP96115260A EP96115260A EP0771648A1 EP 0771648 A1 EP0771648 A1 EP 0771648A1 EP 96115260 A EP96115260 A EP 96115260A EP 96115260 A EP96115260 A EP 96115260A EP 0771648 A1 EP0771648 A1 EP 0771648A1
Authority
EP
European Patent Office
Prior art keywords
drive
bearing
gear
idler gear
drive gear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96115260A
Other languages
German (de)
English (en)
Other versions
EP0771648B1 (fr
Inventor
Helmut Schild
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0771648A1 publication Critical patent/EP0771648A1/fr
Application granted granted Critical
Publication of EP0771648B1 publication Critical patent/EP0771648B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/008—Mechanical features of drives, e.g. gears, clutches
    • B41F13/012—Taking-up backlash

Definitions

  • the invention relates to a device for eliminating drive play in a printing unit according to the preamble of claim 1.
  • the aim of the invention is to prevent an uncontrolled tooth flank change in a printing unit drive and to create an adjustable device for eliminating play that can be adapted to the different needs of printing processes.
  • the object of the invention is to provide a device for eliminating play which overcomes the disadvantages of the prior art.
  • the solution of the task is designed according to the characterizing part of claim 1.
  • the features of the resilience of an idler gear ensure that there is permanent clearance.
  • the force to overcome the drive play is adjustable.
  • the device meets the high requirements for the transmission of drive power in a printing unit.
  • a gear train of a rotary machine is shown schematically.
  • a printing press was selected here as an example. So that's part of one Printing unit drive shown.
  • drive gears 1, 2 and 3 for printing unit cylinders of an offset printing unit are shown.
  • a drive gear 1 is assigned to a plate cylinder, a drive gear 2 to a rubber cylinder and a drive gear 3 to a pressure cylinder.
  • the drive gears 1-3 are in a driving connection, the drive from the pressure cylinder in the direction of the plate cylinder, ie from the drive gear 1 via the drive gear 2 to the drive gear 1.
  • Fig. 2 the meshing between the drive gears 1 to 3 are enlarged and shown in more detail.
  • the drive gear 2 of the blanket cylinder is in drive connection with the drive gear 1 of the plate cylinder and the drive gear 3 of the printing cylinder. In the drive direction from the drive gear 3, this rests on the drive gear 2 or a tooth 4 at point A. Depending on the drive direction, the drive gear 2 rests with a tooth 5 on the drive gear 1 at point B.
  • these flank systems in points A and B are retained during the entire printing process.
  • different play constellations may result from different diameters of the blanket cylinder and plate cylinder or from different paper thicknesses as a result of the friction on the cylinder surfaces.
  • the impression cylinder can drive the blanket cylinder over the paper surface as a result of the friction between the paper and the blanket, in which case the blanket cylinder would rotate more quickly and the drive gear 2 would lead the drive gear 3. Then the tooth 4 would overcome an (exaggerated) drive play S1 and rest on the other side of the tooth gap. None changes for the tooth engagement between the blanket cylinder and plate cylinder.
  • a comparable condition results if the surface or the diameter of the rubber cylinder is relatively too large relative to the plate cylinder due to a thicker rubber blanket or underlay sheet. Then the plate cylinder would be driven over the surface of the blanket cylinder and the drive gear 1 would lead the drive gear 2. The result of this is that a drive play S2 (also shown in an exaggerated manner) between tooth 5 and the toothing of drive gear 1 is overcome and tooth 5 engages the other side of the tooth gap concerned.
  • the drive play S1, S2 should now be eliminated, as shown in FIG. 2, with the aid of an idler gear 6.
  • the idler gear 6 is arranged essentially coaxially with the drive gear 2 on the axis of the rubber cylinder. It is loaded with the aid of the force of a spring 7, shown schematically here, and pressed in the direction of the drive play S1, S2.
  • the idler gear 6 is in each case on the flank which is free with respect to the torque transmission in the tooth engagement between the drive gears 1 or 2 and 2 or 3.
  • the drive gear 2 of the rubber cylinder on the drive gears 1 and 3 is kept in constant contact. The game is no longer bridged.
  • Fig. 3 the drive gear 1 of the plate cylinder and the drive gear 3 of the printing cylinder are shown.
  • the impeller 6 is arranged between the two. This is evident from the type of flank system that faces away from the drive direction.
  • the idler gear 6 is arranged on a bearing block 8 fixed to the frame. Connected to the bearing block 8 in turn a bearing lever 9 is pivotally arranged.
  • the bearing lever 9 can be set against the bearing block 8 by means of a clamping device 10, which contains a spring assembly and can be preloaded with a clamping screw.
  • the idler gear 6 is rotatably mounted on the bearing lever 9.
  • the tensioning device 10 moves the bearing lever 9 with the idler gear 6 due to its set pretension a pivot point 11 on the frame fixed bracket 8 such that it is drawn into the gap between the drive wheels 1 and 3.
  • the tooth flanks facing away from the drive on the drive toothed wheels 1 and 3 come into contact with the toothing of the side gear 6 at the tooth engagements C and D.
  • the drive gear 2 is arranged on a shaft journal 12 in a frame part 13.
  • the idler gear 6 is arranged on bearing devices 14 coaxially with the drive gear 2.
  • the bearing devices 14 are described in FIG. 5 below.
  • the idler gear 6 is also connected to a bearing flange 15, which engages around the shaft journal 12 without contact on the end face.
  • the bearing flange 15 is bell-shaped and carries a bearing 16 on its side used by the idler gear 6.
  • the bearing 16 is in turn arranged on a collar 17 which is connected to the bearing lever 9.
  • the bearing lever 9 is arranged on the bearing block 8 fixed to the frame by means of a stay bolt 18 which forms the pivot axis 11.
  • the tensioning device 10 with the spring assembly engages in an eye 20.
  • the idler gear can be displaced in its axial position relative to the drive gear 2 by pivoting about the bearing axis 11.
  • the idler gear 6 remains freely rotatable on the bearing 16.
  • Each bearing device 14 has a retaining bolt 21 fastened in the drive gear 2.
  • the retaining bolt 21 extends through the idler gear 6 in openings 19.
  • the openings 19 have a slightly larger diameter than the retaining bolts 21 in order to allow a relative movement between the idler gear 6 and the drive gear 2 or to enable the retaining bolt 21.
  • the openings 19 can be provided in guide bushings.
  • axial bearings 22 are arranged on both end faces of the idler gear 6. An axial bearing 22 is therefore arranged between the idler gear 6 and the drive gear 2 and between the screw connection 23 of the bearing pin 21 and the idler gear 6.
  • the axial bearings 22 each have flat bearing disks 24 and 25, or 26 and 27 on the inner bearing disks 25, 26 can be secured against displacement by the bushings in the openings 19.
  • the outer bearing disks 24, 27 are centered on shoulders of the retaining bolt 21. This allows the respective cage of the axial bearing 22 to rotate and move radially to the bearing disks 24 to 27 without the bearing being able to shift. In this way, the idler gear 6 is kept at an exactly constant distance from the drive gear 2 in all movement states.
  • the device has the following functionality:
  • the idler gear 6 can be permanently held in a position under the force of the tensioning device 10 via its prestressed spring assembly in which the axes of rotation of the drive gear 2 and the idler gear 6 do not overlap.
  • the idler gear 6 lies on the tooth flanks opposite the driving tooth flanks of the drive gear wheels 1 and 3.
  • the drive gears 1 and 3 are quasi clamped in relation to the drive gear 2.
  • the relative position between the drive gear 2 and the idler gear 6 is shown in more detail in FIG. 2.
  • the adjustable preload of the tensioning device 10 makes it possible to provide different auxiliary forces to compensate for drive play between the drive gear 2 and the idler gear 6. This makes it possible to influence the operating conditions of the rotary machine and the load on the drive train.
  • the type of suspension of the idler gear 6 relative to the drive gear 2 is of course possible in a different way than shown in the aforementioned example.
  • the idler gear 6 can also be fastened to the drive gear 2 on a linearly guided adjusting device.
  • the drive clearances are relatively small, a sufficiently precise adjustment of the idler gear 6 is also possible with the aid of the bearing lever 9 mentioned, the displacement of which is not exceeded by a maximum amount due to the pivoting radius of the bearing lever 9 out of the necessary engagement space.
  • the device can be arranged very compactly in the manner shown and can also be easily assembled.
  • the drive gear 2 only needs to be changed slightly, so that the effort for installing the device would require greater effort.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear Transmission (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Rotary Presses (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)
EP96115260A 1995-10-31 1996-09-24 Dispositif de rattrapage de jeu dans une machine d'impression Expired - Lifetime EP0771648B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19540573A DE19540573C1 (de) 1995-10-31 1995-10-31 Vorrichtung zum Spielausgleich in Rotationsdruckmaschinen
DE19540573 1995-10-31

Publications (2)

Publication Number Publication Date
EP0771648A1 true EP0771648A1 (fr) 1997-05-07
EP0771648B1 EP0771648B1 (fr) 1998-10-21

Family

ID=7776282

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96115260A Expired - Lifetime EP0771648B1 (fr) 1995-10-31 1996-09-24 Dispositif de rattrapage de jeu dans une machine d'impression

Country Status (4)

Country Link
EP (1) EP0771648B1 (fr)
JP (1) JPH09177903A (fr)
AT (1) ATE172406T1 (fr)
DE (2) DE19540573C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0943433A1 (fr) * 1998-03-16 1999-09-22 Grapha-Holding Ag Unité d'impression pour une machine à imprimer, en particulier une machine rotative d'impression offset

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19716283A1 (de) * 1997-04-18 1998-10-22 Koenig & Bauer Albert Ag Zylinderanordnung für Rollenrotationsdruckmaschinen
US6335392B1 (en) 1998-10-21 2002-01-01 Sumitomo Rubber Industries, Ltd. Outsole of shoes
DE10023682A1 (de) * 2000-05-16 2001-11-22 Roland Man Druckmasch Antrieb eines Anlegers für eine Bogen verarbeitende Maschine
DE102007020225A1 (de) * 2007-04-28 2008-10-30 Koenig & Bauer Aktiengesellschaft Vorrichtung zur Synchronisierung der Drehbewegung von einzeln angetriebenen Rotationskörpern
DE102007025752A1 (de) * 2007-06-01 2008-12-04 Manroland Ag Angetriebene Baugruppe einer Druckmaschine
DE102009057849A1 (de) 2009-12-10 2011-06-16 Heidelberger Druckmaschinen Ag Offsetdruckmaschine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3407727A (en) * 1966-03-23 1968-10-29 Maschf Augsburg Nuernberg Ag Supplementary driving gear arrangement for multi-color sheet-fed rotary printing presses
GB1135164A (en) * 1966-04-16 1968-12-04 Albert Schnellpressen Improvements in or relating to drive mechanisms for the printing mechanisms of rotary printing presses
GB1214422A (en) * 1968-04-20 1970-12-02 Maschf Augsburg Nuernberg Ag Improvements in or relating to rotary offset printing machines

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4831470B1 (fr) * 1970-05-26 1973-09-29
DE8109324U1 (de) * 1981-03-30 1983-03-10 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Spielfreier Zahnradtrieb für Druckmaschinen
JPS5881263A (ja) * 1981-10-30 1983-05-16 ゼロツクス・コ−ポレ−シヨン 対向ばね式バツクラツシ防止分割歯車

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3407727A (en) * 1966-03-23 1968-10-29 Maschf Augsburg Nuernberg Ag Supplementary driving gear arrangement for multi-color sheet-fed rotary printing presses
GB1135164A (en) * 1966-04-16 1968-12-04 Albert Schnellpressen Improvements in or relating to drive mechanisms for the printing mechanisms of rotary printing presses
GB1214422A (en) * 1968-04-20 1970-12-02 Maschf Augsburg Nuernberg Ag Improvements in or relating to rotary offset printing machines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0943433A1 (fr) * 1998-03-16 1999-09-22 Grapha-Holding Ag Unité d'impression pour une machine à imprimer, en particulier une machine rotative d'impression offset
US6314881B1 (en) 1998-03-16 2001-11-13 Grapha-Holding Ag Printing group for a printing press

Also Published As

Publication number Publication date
DE19540573C1 (de) 1996-11-07
DE59600701D1 (de) 1998-11-26
ATE172406T1 (de) 1998-11-15
EP0771648B1 (fr) 1998-10-21
JPH09177903A (ja) 1997-07-11

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