EP0031003A2 - Dispositif d'entraînement avec branchement de puissance pour une machine à imprimer rotative à plusieurs couleurs - Google Patents

Dispositif d'entraînement avec branchement de puissance pour une machine à imprimer rotative à plusieurs couleurs Download PDF

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Publication number
EP0031003A2
EP0031003A2 EP80106012A EP80106012A EP0031003A2 EP 0031003 A2 EP0031003 A2 EP 0031003A2 EP 80106012 A EP80106012 A EP 80106012A EP 80106012 A EP80106012 A EP 80106012A EP 0031003 A2 EP0031003 A2 EP 0031003A2
Authority
EP
European Patent Office
Prior art keywords
power
force input
supply line
drive
input point
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
EP80106012A
Other languages
German (de)
English (en)
Other versions
EP0031003A3 (en
EP0031003B1 (fr
Inventor
Hugo Rambausek
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger 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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0031003A2 publication Critical patent/EP0031003A2/fr
Publication of EP0031003A3 publication Critical patent/EP0031003A3/de
Application granted granted Critical
Publication of EP0031003B1 publication Critical patent/EP0031003B1/fr
Expired 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

Definitions

  • the invention relates to a drive with power split for multi-color rotary printing presses with a series arrangement of the printing units, which are connected to one another via a gear train and are driven by two force input points, which are fed with power starting from a common motor via a supply line.
  • the object of the invention is, with a minimum of effort, both in terms of means and costs, to completely rule out overdetermination of the drive and to continuously adapt the power feed into the two force input points of the gear train to the varying power requirements of the individual printing units, in order to achieve one Flank change of the gears of the gear train to ver avoid.
  • the solution to the problem according to the invention is first of all the knowledge that the load on the printing press is strongly dependent on its speed.
  • the numerous non-uniform gear ratios, cam-controlled gripper drives, etc., available on a sheet-fed offset printing machine load the main drive with a torque that increases quadratically with the speed. Naturally, these dynamic additional forces are not available at speed 0.
  • the drive When starting up or at very low printing speeds, the drive only has to cover the friction losses. This means that, at low speeds, the disadvantage of the prior art drives of the excessive load on the printing units closest to the feed point is not so significant. This disadvantage is only noticeable in print quality at higher printing speeds, especially since the inking units require more power as the speed increases.
  • the invention makes use of this knowledge, starting from the torque demand characteristic of the printing press, in the fulfillment of its task, the solution of which is that the supply line feeding the second force input point leads to cubic increasing power with the speed.
  • This measure which is easy to carry out, ensures that the power share of the supply line feeding the second force input point increases to the same extent as the share of the power of the supply line assigned to the first force input point falls, as a result of which the power supply to the individual printing units is as uniform as possible and results therefrom constant printing quality is ensured.
  • a hydrodynamic coupling is switched into the supply line that feeds the second force input point.
  • the primary part and the secondary part of the hydrodynamic coupling are in driving connection with one another in such a way that there is a constant speed ratio between the two, the primary part rotating faster than the secondary part facing the force input point.
  • Figures 1, 2, 4 and 6 show a six-color sheet-fed rotary printing machine, the six printing units 1-6 of which are arranged in series.
  • the drive power required for the six printing units 1-6 is applied by a drive motor 7, which is designed, for example, as an electric motor.
  • the power supply of the six printing units 1-6 takes place via two separate supply lines 8 and 9, which are fed with power by the common drive motor 7 at the same time.
  • a coupling primary part 11 of a hydrodynamic coupling 12 is arranged on the end of a drive shaft 10 of the drive motor 7.
  • the first supply line 8 branches off in front of the primary coupling part 11, in which the greater part of the drive power generated by the drive motor 7 is first transmitted to a belt drive 14.
  • a V-belt pulley 15 of the belt drive 14 drives a spur gear pair 17 via a shaft 16, one spur gear of which is attached to the free end of a journal 19 of a transfer cylinder, not shown and described in more detail, arranged between the second and third printing units.
  • the first supply line 8 opens at one of the above.
  • Axle journal 19 fastened drive gear 20 into a first force input point 21 of a gear train 22.
  • the above-mentioned hydrodynamic clutch 12 is switched on in such a way that there is a constant speed ratio between the clutch primary part 11 arranged on the engine side and a clutch secondary part 30 downstream thereof.
  • the primary coupling part 11 has a slightly higher speed than the secondary coupling part 30, so that there is always a constant slip between these two coupling parts 11 and 30.
  • the clutch secondary part 30 transmits the drive power to a belt drive 31, the V-belt pulley 32 of which drives a spur gear tooth pair 34 via a shaft 33, one of the spur gear wheels 34 being fastened at the end to an axle journal 35 of a transfer cylinder, not shown or described.
  • the second supply line 9 opens between the printing unit 4 and 5 in the drive gear 29 for the transfer cylinder mentioned above into a second force input point 36 in the gear train 22.
  • the drive gear 29 is also fastened to the journal 35 and is in the gear train 22 with the adjacent drive gear 28 of the Printing cylinder of the fourth printing unit 4, not shown, engages.
  • the total output required by the printing press is represented in a diagram in FIG. 3 by curve "a" in a standardized representation depending on the machine speed n.
  • the power P increases with increasing machine speed n.
  • the abscissa of this graph represents thereby the speed ratio n D / n D max relative to the Ma s chinenburniere n D max, the ordinate the power ratio P / P max based on the maximum power P max.
  • the curve "a” represents the total performance of the machine and thus the power to be applied by the drive motor 7.
  • the curve "b” indicates the proportion of the power ratio P h y dr / P max that is fed to the machine via the second supply line 9.
  • the curve "b" is a cubic parabola.
  • the curve “c” thus shows the total torque requirement on the machine.
  • the curve “d” corresponds to the torque that is supplied by the drive motor 7 via the hydrodynamic clutch 12. It is a square parabola.
  • the diagram also shows the torque requirements M D1 to M D6 for the individual printing units 1-6.
  • the power is fed from the first supply line 8 into the gear train 22 via a first force input point 37 located in front of the first printing unit and from the second supply line 9 via a second force input point 38 between the third and fourth Printing unit lies.
  • the output of the printing units 5 and 6 is completely covered, and the output for the printing unit 4 is half covered by the second supply line 9. It also applies here that there are clear directions of force flow at all speed ratios below 1.
  • the progression of curve "b" or “d” can be changed in a simple manner by changing either the degree of filling of the hydrodynamic clutch 12 (more or less oil content) or the slip between the clutch primary part 11 and the clutch secondary part 30.
  • a change in the constant slippage which in the normal design is brought about by correspondingly rigid transmission ratios between the coupling primary and secondary parts 11 and 30, can be brought about by additionally switching a continuously variable transmission 39 into one of the two supply lines 8 or 9.
  • a continuously variable transmission 39 arranged in the second supply line 9 as shown in FIG. 8, it is possible to reverse the power flow in the second supply line 9 in such a way that the clutch secondary part 30 rotates faster than the clutch primary part 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
EP19800106012 1979-12-24 1980-10-03 Dispositif d'entraînement avec branchement de puissance pour une machine à imprimer rotative à plusieurs couleurs Expired EP0031003B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2952365 1979-12-24
DE19792952365 DE2952365C2 (de) 1979-12-24 1979-12-24 Antrieb mit Leistungsverzweigung für Mehrfarben-Rotationsdruckmaschinen

Publications (3)

Publication Number Publication Date
EP0031003A2 true EP0031003A2 (fr) 1981-07-01
EP0031003A3 EP0031003A3 (en) 1981-07-15
EP0031003B1 EP0031003B1 (fr) 1986-02-05

Family

ID=6089686

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800106012 Expired EP0031003B1 (fr) 1979-12-24 1980-10-03 Dispositif d'entraînement avec branchement de puissance pour une machine à imprimer rotative à plusieurs couleurs

Country Status (3)

Country Link
EP (1) EP0031003B1 (fr)
JP (1) JPS5699671A (fr)
DE (1) DE2952365C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2592335A1 (fr) * 1985-12-27 1987-07-03 Polygraph Leipzig Machine a imprimer rotative typographique a feuilles
FR2592336A1 (fr) * 1985-12-27 1987-07-03 Polygraph Leipzig Machine a imprimer rotative typographique a feuilles
GB2185938A (en) * 1986-02-03 1987-08-05 Ricoh Kk Mechanism for driving multiple photosensitive members

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD300474A7 (de) * 1989-12-20 1992-06-17 Polygraph Leipzig Antrieb für Mehrfarbenbogenrotationsdruckmaschinen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1237140B (de) * 1962-10-19 1967-03-23 Planeta Veb Druckmasch Werke Antrieb fuer Mehrfarben-Bogenrotations-druckmaschinen in Reihenanordnung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2592335A1 (fr) * 1985-12-27 1987-07-03 Polygraph Leipzig Machine a imprimer rotative typographique a feuilles
FR2592336A1 (fr) * 1985-12-27 1987-07-03 Polygraph Leipzig Machine a imprimer rotative typographique a feuilles
GB2185938A (en) * 1986-02-03 1987-08-05 Ricoh Kk Mechanism for driving multiple photosensitive members
GB2185938B (en) * 1986-02-03 1990-03-28 Ricoh Kk Mechanism for driving photosensitive members

Also Published As

Publication number Publication date
DE2952365A1 (de) 1981-07-02
DE2952365C2 (de) 1982-12-16
EP0031003A3 (en) 1981-07-15
JPS5699671A (en) 1981-08-11
EP0031003B1 (fr) 1986-02-05

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