• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:SU918109A1
    申请号:SU787770133
    申请日:1978-03-14
    公开日:1982-04-07
    发明作者:Вольфганг Май；Дитрих Мюллер
    申请人:Феб Полиграф Друкмашиненверк Пламаг Плауен (Инопредприятие)；
    IPC主号:
    专利说明:

    The invention relates to a device for damping torsional vibrations in the drive of printing machines.
    Due to the fact that torsional vibrations in the drive of printing machines are the main cause of crushing, there are many solutions that try to eliminate the consequences of torsional vibrations with greater or lesser success.
    A device for damping oscillations in a printing machine drive (DT-03 447 632) is known, in which two mutually engaging gears are provided with 15 working disks touching each other, one of which has a relatively inelastic overlay around the circumference, and the second one with a relatively elastic material. Kro- 20 IU of disc diameters can be changed stepwise with respect to the pitch circle diameter soot- (sponds gear.
    In this case, the frictional force that occurs 25 when the working disks running around each other slip, contributes to the damping of vibrations. However, the working disks are subject to considerable wear and tear, and their replacement is complex and relatively labor-consuming. In addition, more drive power is needed.
    A device is known (DT-OB 2 516 462), in which, to compensate for torsional vibrations caused by a direct current drive of the printing press, the damping mass of the torsional vibration damper is fixed to the torsion spring rod with free rotation on it.
    The disadvantage of this device is that its action is effective only in a narrow frequency range. Only oscillations with frequencies lying in the immediate vicinity of the resonant frequencies are suppressed. In this case, the suppressed frequency of the system must be previously determined, and then the natural frequency of the damper is tuned to it.
    The purpose of the invention is to create a device with which eliminates a decrease in the quality of the printed product due to torsional vibrations in the drive of the printing press.
    The objective of the invention is, with the help of a small-sized, inexpensive, simple to manufacture and assembled, connected with the drive of the printing press of the device to eliminate all torsional vibrations arising in the drive in the entire speed range.
    To this end, according to the invention, at least one physical pendulum tuned to a specific exciting harmonic of the drive revolution ranges is rotatably connected with one or more axis of rotation of the drive.
    The physical pendulum, made in the form of a bifilar pendulum or rolling pendulum, can rotate in. connection point.
    With the help of each pendulum, it is possible to suppress one exciting harmonic in the entire range of revolutions of a system subject to torsional vibrations, while well-known dampers absorb only torsional vibrations of a narrowly limited frequency range.
    It is enough to make the pendulum in such a way that with its help the amplitudes of torsional vibrations are reduced only to such an extent that they do not affect the quality of the printed matter. In addition, it is recommended to place the device as close as possible to the excitation source, since behind the quenching pendulum ’it is impossible to excite 30 the corresponding excitation order.
    To ensure the most balanced operation of the drive, it is advisable to place a second pendulum, tuned to the same or a different exciting harmonic, or a rigid balancing load, which is directly opposite to the plane of oscillation of the pendulum, diametrically opposite to it and exposed to the same centrifugal force. Therefore, paired pendulums or a pendulum are used in combination with the corresponding balancing mass.
    The location of each of the two 4E pendulums in one plane is most optimal, which does not exclude a slight displacement of the pendulum suspension points in the direction of the rotation axis. __
    Advantageously ustroy- 50 GUSTs mount for damping torsional vibrations so that with. each consisting of drive gears for cylinders of individual printing sections of closed kinematic chains or 55 with the corresponding cylinders of the printing sections were coupled with at least two pendulums located in a pair or a pendulum in combination with a balancing mass. 60
    If in multi-section printing machines' several closed kinematic chains are required to drive individual printing sections, it is advisable to provide the proposed device in each kinematic chain, since the transmission mechanisms connecting the kinematic chains, for example, a bevel gear transmission, can be a source of excitation of torsional vibrations.
    The housing of each pendulum is pivotally connected by means of two parallel. side of the scenes with a drive gear symmetrically to its axis, and the gear has stops to limit the pendulum body. The stops should prevent uncontrolled movements of the pendulum assemblies during the acceleration of the drive.
    It is possible to position the pendulums directly at the cylinders by connecting the pendulums pivotally parallel to the end faces of the corresponding cylinder.
    Figure 1 shows a multi-sectional offset printing machine; figure 2 - a device for damping torsional vibrations; in Fig. 3 - the same, end view.
    In a multi-section offset printing machine, the lower and upper printing sections are driven by a closed kinematic chain 1, consisting of drive gears 2-6, from a vertical drive shaft 7 through a bevel gear 8.
    Each kinematic chain 1 includes in the named sequence a drive gear 9 driven by a drive shaft 7 of a bevel gear 8, a drive gear 2 of a device for damping torsional vibrations 10; drive gears of the 3rd and 4th directly connected to the plate and printing cylinders of the left printing section, as well as driving gears 5 and 6 of the right printing section of the double printing section directly connected to the plate and printing cylinders.
    It is possible to locate a device for damping torsional vibrations not only within the closed kinematic chain 1, but also outside it with gear provided that the kinematic chain 1.double printed section is a fairly rigid system, subject to torsional vibrations in the considered speed range. As the point of application of the drive force, you can choose any drive gear of the kinematic chain.
    A device for damping torsional vibrations 10 including a drive gear 2 is replaced by a device associated only with a drive gear 5 of the upper dual printing section or with a driving gear 6 of the lower dual printing section.
    The drive gear 2 rotates on a bolt 12 rigidly screwed to the wall of the printing device 11 and has a protruding circular flange 13, on which two pairs of bolts 14 and 15 are mounted symmetrically to the axis of rotation of the drive gear 2 with the possibility of rotation of two diametrically parallel wings 16 and 17 opposite to pendulums 18 and 19.
    At the outer ends of the parallel wings 16 and 17 of each pendulum 18 and 19, by means of bolts 20 and 21, the pendulum body 23 made in the form of a connecting rod is pivotally fastened, the swinging of which is limited by stops 24, 25 rigidly sitting on the flange 13.
    The conditions for adjusting the pendulum for suppressing the exciting harmonic are known and are given by special literature on this subject.
    To eliminate imbalance, both pendulums 18 and 19 of the device are under the influence of the same centrifugal force, however, they can be tuned to various exciting harmonics.
    权利要求:
    Claims (4)
    [1]
     t The invention relates to a device for damping torsional vibrations in the drive of a printing press. Due to the fact that torsional klebs in the drive of printing machines are the main cause of fragmentation, there are many solutions that try to eliminate the effects of torsional vibrations with more or less success. It is known a device for damping oscillations in a drive of printing machines (DT-03 447 632), in which two mutually engaging gears are equipped with working disks touching each other, one of which has a relatively inelastic pad around the other and a pad with a relatively elastic material. In addition, the diameters of the discs may be incrementally varied by the distance of the diameter of the pitch circle of the rotating gear. At the same time, the force of friction, which occurs when slipping working disks encircle each other, contributes to damping vibrations. However, the working disks are subject to significant wear, and their replacement is difficult and relatively time consuming. In addition, greater drive power is needed. A device (DT-OS 2 516 462) is known in which, in order to compensate for torsional vibrations caused by the direct current drive of the printing machine, the quenching mass of the torsional vibration damper is fixed on the rod of the torsion spring with the possibility of free rotation on it. A disadvantage of this device is that its operation is effective only in a narrow frequency range. Only the oscillations with frequencies lying in the immediate vicinity of the resonant frequencies are damped. In this case, the suppressed frequency of the system must be predetermined, and then the intrinsic frequency of the quencher is tuned to it. The purpose of the invention is to create a device that eliminates a reduction in the quality of printed products due to torsional vibrations in the drive of a printing machine. The object of the invention is to use a compact, low-cost, easy to manufacture and install printing drive. The device mains eliminate all torsional oscillations occurring in the drive over the entire rev range. For this, according to the invention, one or several axes of rotation of the drive are connected with the possibility of rotation to at least one physical key tuned to a particular exciting harmonic of the ranges of the drive's turn. A physical master, made in the form of a bi-filial master or rolling stone, can be rotated into. junction point. With each tantalum, it is possible to quench one excitatory harmonic over the entire rotational range of a system subject to torsional vibrations, while known dampers absorb only torsional vibrations of a narrowly limited frequency range. It is enough to perform a tactile in such a way that with its help the amplitudes of torsional vibrations are reduced only to such an extent that they do not affect the quality of printed products. In addition, it is recommended to place the device as close as possible to the excitation source, since the excitatory effect of the corresponding excitation order is impossible behind the damping character. In order to ensure the most balanced operation of the drive, it is advisable to place a second file in the immediate vicinity of the plane of oscillation diametrically opposite to it and exposed to the same centrifugal force, tuned to the same or to another exciting harmonic, or a hard balance weight. Therefore, pair or a man is used in combination with an appropriate balancing mass. The location of each of the two NICOV mats in the same plane is optimal, which does not exclude a slight displacement of the points of the suspension of the manes in the direction of the axis of rotation. It is advisable to mount the device for damping torsional vibrations so that c. each consisting of driving gears for the cylinders of individual printing units of closed kinematic chains or with the corresponding cylinder of the printing units, at least two arranged in pairs of a tambourine or a tandem in combination with an equilibrium weight were mated. If in multi-section printing machines several multiple kinematic chains are required to drive individual printing sections, it is advisable to provide the proposed device in each kinematic chain, since transfer mechanisms, such as conical gear, can be the source of torsional vibration in each kinematic chain. The body of each tomb is pivotally connected by means of two parallel-. axle with metrically, axle, and the gear has pads to limit the hull ma. tnik. The stops must prevent uncontrolled movements of swing nodes during the acceleration of the drive. It is possible to place tilts directly at the cylinders by connecting the hingedly parallel tillers of the tillers with the front side of the corresponding cylinder. Fig. 1 shows a multi-section offset printing machine; 2 shows a device for damping torsional vibrations; on fig.Z - the same, a view from the end. In a multi-section offset printing machine, the lower and upper printing units are driven by a closed kinematic chain 1, consisting of drive gears 2-6, from a vertical drive shaft 7 through a bevel gear 8. Each kinematic chain 1 includes a drive gear 9 in the sequence named. driven gears 7 bevel gears 8, drive gear 2 devices for damping torsional vibrations 10 directly associated with the printing and printing cylinders drive gears 3 and 4 liters howl printing unit, and also directly associated with the printing forme and tsilindRs1mi drive gear 5, and 6 right double printing unit of the printing unit. It is possible to locate a device for damping torsional vibrations not only within the closed kinematic chain 1, but also outside of it with engagement, provided that the driven kinematic chain is 1. The doubled printing section is a fairly rigid system subject to torsional vibrations in the considered rotation range . As the point of application of the drive force, any drive gear of the kinematic chain can be selected. The torsional vibration damping device 10. including the drive gear 2 is replaced with a device associated only with the drive gear 5 of the upper double printing unit or with the drive gear 6 of the lower dual printing unit. The drive gear 2 rotates a bolt 12 which is firmly screwed to the wall of the printing device 11 and has a protruding circular flange 13 on which two pairs of bolts 14 and 15 for hanging are mounted diametrically parallel to the axis of rotation of the drive gear 2 opposite the tangs 18 and 19. At the outer ends of the parallel wings 16 and 17 of each tandem 18 and 19, the hinge 23 made in the form of a connecting rod, is swiveled by a bolt 20 and 21, It is checked by the stops 24, 25 which are rigidly mounted on the flange 13. The conditions for adjusting the mandrel to suppress the exciting harmonics are known and are given by the special literature on this issue. To eliminate the imbalance, both devices 18 and 19 of the device are influenced by the same centrifugal force, however, they can be tuned to different exciting harmonics. Claims 1. A device for damping torsional vibrations in the interface of printing machines, characterized in that c, one or each of several axes of rotation of the drive is connected to at least one physical thumbnail tuned to. a certain excitation harmonic of the drive speed range, made as a bifilar talon or a rolling master.
    [2]
    2. The device according to claim 1, which is in the immediate vicinity of the plane of oscillation of the tandem diametrically opposite to it, the second master tune, rotated by the same centrifugal force, tuned to the same or another exciting harmonica, or a hard balance load.
    [3]
    3. The device according to claim 2, characterized in that for each of the kinematic chains 1, consisting of drive gears 2-6, for the cylinders of the individual printing units or directly with the respective cylinders of the printing sections are coupled at least two installed in a pair of 18 and 19 or master 18 or 19 V; balancing load combinations.
    [4]
    4. The device according to Clause 3, of which the body 23 of each master 18 and 19 is hinged by means of two parallel wings 16 and 17 on the drive gear 2 is symmetrical to its axis, on which there are stops 24, 2.5 for limitations of rocking the body of the tutorial 23. It is recognized as an invention according to the results of the examination carried out by the Office for Inventions and Patents of the German Democratic Republic. (1 Ж4Ммг L v V) Fig. /
    gz
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    同族专利:
    公开号 | 公开日
    DD130321A1|1978-03-22|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE19914613A1|1999-03-31|2000-10-05|Heidelberger Druckmasch Ag|Method and device for eradicating the torsional vibrations of a printing press|
    DE19914627B4|1999-03-31|2011-05-12|Heidelberger Druckmaschinen Ag|Method and device for compensating the torsional vibrations of a printing machine|
    DE10041025C2|2000-08-22|2002-09-12|Roland Man Druckmasch|Device for the eradication of torsional vibrations in the drive of a printing press, in particular a sheet-fed rotary printing press|
    DE102009037481B4|2008-09-18|2018-09-06|Schaeffler Technologies AG & Co. KG|Speed-adaptive absorber, in particular centrifugal pendulum device|
    DE102008054192A1|2008-10-31|2010-05-06|Manroland Ag|printing unit|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DD19835177A|DD130321A1|1977-04-12|1977-04-12|DEVICE FOR REMOVING TORSION VIBRATIONS|
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