EP0031003B1 - 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
EP0031003B1
EP0031003B1 EP19800106012 EP80106012A EP0031003B1 EP 0031003 B1 EP0031003 B1 EP 0031003B1 EP 19800106012 EP19800106012 EP 19800106012 EP 80106012 A EP80106012 A EP 80106012A EP 0031003 B1 EP0031003 B1 EP 0031003B1
Authority
EP
European Patent Office
Prior art keywords
power
drive
speed
coupling
printing units
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.)
Expired
Application number
EP19800106012
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German (de)
English (en)
Other versions
EP0031003A2 (fr
EP0031003A3 (en
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 driven by two force input points, each of which is supplied with a variable, speed-dependent work output, starting from a common motor via a supply line a supply line is provided with a clutch.
  • DE-PS 23 34 177 discloses a drive device for rotary sheet-fed printing presses in series, in which the drive power brought by a common motor is fed into a closed gear train via at least two force input points, so that a closed power circuit is created.
  • the disadvantage of this device is that at least one auxiliary power circuit is formed in this power circuit parallel to the gear train, the direction of the power flow of which is predetermined by a slip clutch arranged in the auxiliary power circuit.
  • This auxiliary power circuit or several auxiliary power circuits constantly withdraw a very specific, predetermined power from the drive train at one or more points, which power is fed back in at least one other point of the drive train with the least possible losses. This increases the load on the gearwheels in the gear train in addition to the network power by an additional reactive power, which should be taken into account when dimensioning them.
  • the object of the invention is to completely rule out overdetermination of the drive by avoiding any reactive power with a minimum of effort, both in terms of the means and the manufacturing costs, and the power feed into the two force input points of the gear train continuously meet the power requirements of the individual printing units, which vary with changing pressure ratios, without that Adjustment of power withdrawal requirements in a targeted and infinitely variable manner in order to avoid a flank change of the gear wheels of the gear train.
  • the first finding is that the load on the printing press is strongly dependent on its speed.
  • the numerous non-uniformly converting gears, cam-controlled gripper drives, etc. which are available on a sheet-fed offset printing press, load the main drive with a torque that increases quadratically with the speed. These dynamic additional forces are naturally not available at the speed "zero".
  • 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 only becomes noticeable in print quality at higher print speeds, especially since the inking units also require more performance with increasing speed.
  • 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 coupling is designed as a hydrodynamic coupling and in the supply line feeding the second force input point, which increases cubically with the speed Power leads, is switched on in such a way that the clutch primary part assigned to the drive motor rotates faster than the clutch secondary part facing the second force input point, wherein there is a constant speed ratio between the two and the increase in power of the supply line feeding the second force input point is proportional to the reduction in performance of the supply line feeding the first 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 by the common drive motor 7 with power 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 transferred 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 on the above.
  • Axle pin 19 fastened drive gear 20, in a first force input point 21 of a gear train 22. '
  • the hydrodynamic clutch 12 already mentioned above is switched on in these two supply lines 9 in such a way that there is a constant speed ratio between the clutch primary part 11 arranged on the front side and a clutch secondary part 30 connected downstream thereof.
  • the primary coupling part 11 has a slightly higher speed than the secondary coupling part 30, so that there is constant slippage 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 53, one of the spur gear wheels 34 being attached at the end to an axle pin 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 on the axle journal 35 and sees in the gear train 22 with the adjacent drive gear 28 Printing cylinder (not shown) of the fourth printing unit 4, which is described in greater detail.
  • 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 diagram represents the speed ratio nD / nD max in relation to the machine speed n Dmax ', the ordinate the power ratio P / P max in relation to the maximum power P max .
  • the curve "a" represents the total power of the machine and thus also that of Drive motor 7 power to be applied.
  • 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 moior 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 torque distribution at the maximum speed of the machine results.
  • the torque requirement for a single printing unit is numerically set to 1, so that the drive motor 7 Total moment 6 has to be brought up. Since all printing units 1 - 6 run at the same speed, the torque distribution also corresponds to the power distribution. It can be seen that at the critical nodes of FIG. 4, the first force input point 21 and the second force input point 36, there are always clear directions of force flow. The gear train leading to the right of the force input point 36 to the printing unit 4 is always flowed through in the direction of the arrow pointing to the left, even at the speed ratios ⁇ 1.
  • 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 curve "b" or. “d” can be changed in its progression 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 slippage, which is constant per se, 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. With the aid of a continuously variable transmission 39 arranged in the second supply line 9 as shown in FIG. 8, it is possible to vary the slip of the hydrodynamic clutch and thus the power flow.
  • the arrangement described shows how advantageously the engagement of a hydrodynamic clutch 12 in a second supply line 9 can be used to achieve several effects, in particular when a continuously variable transmission 12, which only has to have a small adjustment range, is used as an additional variation member.

Landscapes

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

Claims (1)

1. Entraînement avec dérivation de puissance pour des machines rotatives d'impression à plusieurs couleurs comportant des mécanismes imprimeurs (1 à 6) disposés en série, qui sont reliés entre eux par l'intermédiaire d'un train d'engrenages (22) et qui sont entraînés par l'intermédiaire de deux postes d'introduction de force (21,36), qui sont alimentés, chacun par l'intermédiaire d'une ligne de transmission (8,9) et à partir d'un moteur commun (7), avec une puissance de travail variable et fonction de la vitesse de rotation, un train d'alimentation étant pourvu d'un embrayage (12), caractérisé en ce que l'embrayage (12) est agencé comme un embrayage hydrodynamique et est disposé dans la ligne d'alimentation (9) alimentant la seconde zone d'introduction de force (36,38) qui produit une puissance augmentant comme le cube de la vitesse de rotation, de telle sorte que la partie primaire (11) d'embrayage associée au moteur d'entraînement (7) tourne plus vite que la partie secondaire (30) d'embrayage tournée vers la seconde zone d'introduction de force (36, 38) auquel cas il existe entre les deux parties un rapport constant de vitesses de rotation et l'augmentation de puissance de la ligne d'alimentation (9) assurant l'alimentation de la seconde zone d'entrée de force (36,38) est proportionnelle à la réduction de puissance de la ligne d'alimentation (8) alimentant la première zone d'entrée de force (21,37).
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 EP0031003A2 (fr) 1981-07-01
EP0031003A3 EP0031003A3 (en) 1981-07-15
EP0031003B1 true 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)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD245166B1 (de) * 1985-12-27 1989-04-26 Polygraph Leipzig Abtrieb fuer eine mehrfarben-bogenrotationsdruckmaschine
DD245167B1 (de) * 1985-12-27 1989-04-26 Polygraph Leipzig Antrieb fuer mehrfarben-bogenrotationsdruckmaschinen
JPH0690561B2 (ja) * 1986-02-03 1994-11-14 株式会社リコー カラ−記録装置における感光体駆動装置
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

Also Published As

Publication number Publication date
EP0031003A2 (fr) 1981-07-01
DE2952365A1 (de) 1981-07-02
DE2952365C2 (de) 1982-12-16
EP0031003A3 (en) 1981-07-15
JPS5699671A (en) 1981-08-11

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