SU1214488A1 - Actuator for web-fed rotary press with tools for controlling longitudinal movement of tape material - Google Patents

Description

Both control units are additionally equipped with acceleration sensors, kinematically connected to the plate cylinders of the printing units and with the faly cylinder of the folding section and electrically connected to the corresponding totalizers, 3, Drive according to HU.I. and 2, about t l isch and m w and and with the fact that the number

The invention relates to the printing industry, in particular to multisectional rotary printing machines of two-sided multi-color printing,

The invention inventions is an improvement in the accuracy of matching the movements of the cylinders of the sections of a two-sided printing machine and the tape to be processed.

Figs 1 and 2 respectively show the first version of the drive circuit of the offset rotary web-fed printing press for two-sided multi-color printing with four-pylon printing sections and the drive circuit of its printing section; FIGS. 3 and 4 show, respectively, the second embodiment of the drive circuit of the said printing machine and the intersectional differential mechanism of this drive 5 in FIG. 5, a third embodiment of the drive circuit of the same machine; Fig. 6 is a schematic diagram of an automatic longitudinal register control system for a tape.

The drive of the rotary printing press with the means of controlling the longitudinal movement of the printed ribbon is connected (Fig. 1) with two printing plates 1 and 2 and two offset 3 and 4 cylinders in each printing section, with rollers 5 being placed between the sections tapes 6 of the printed material, and also - with a folder 7, rub shchi. 8, lentoduushim 9, 10 cylinders of the folding section interacting with the shims of rollers, while between the 9 cylinder and a pair of pilots / and B along

14488

sectional motors in each printing unit is equal to the number of printing units included in it.

4. The drive according to claim 1, 1-3, characterized in that the closing means is made in the form of electrical connections between the adders of both control units.

ribbons are placed by folding folder 1, directing, 12 and crimping 13 rollers, and after cylinders 7 and 8 - folding rollers 14. In addition, the drive contains two sectional electric motors 15 and 16 in each printing section and one electric motor 17 in the folding section sections.

The electric motors 15 and 16 in the printing sections are provided by means of pins, their shafts 18 and 19, respectively, are connected with the leading units — the carriers 20 (FIG. 2) of the first differential mechanisms with two degrees of freedom — at the entrance to the section from the forme cylinders 1 and 2 The satellites 21 placed on the carriers 20 have gears with driven wheels 22 and 23. The wheels 22 are connected by means of simple gears 24 to the shafts of the plate cylinders I and 2, and the wheels 23 by means of rigid shafts 25 are connected with second links differential mechanisms so e with two degrees of freedom, which together with simple transmissions to the shafts 24 of cylinders conventionally designated pozipiey 26. Driven wheels 27 are connected to the second differential mechanisms rigid portions 28 and

Communication shaft and gears

30 and 31 with movable parts, respectively, 32 and 33 actuators of an automatic register control system, for example, an electromagnetic powder coupling. The hard sections 28 and 29 are interconnected by the communication shaft section 34, the sections 34 in each printing section are interconnected by means of simple gears 35 and the flexible section O of the intersectional closing shaft 36. The rigidity of the driving shafts 18 and 19, as well as the flexible intersectional closing shaft 36 is less than the hardness of gears of simple and differential mechanisms, shafts 25, sections 28 and 29 of the shaft of communication, as well as

shafts, connecting gears 26 with cylinders,

The kinematic relationship between cylinders — the closure of their rotations within each section — can be accomplished, for example, in two ways.

The first variant is shown in Fig. 2 by solid lines reflecting the placement of the gear wheels on the ends of the cylinders, in the second variant these wheels are shown by dashed lines. Both variants can be used in the drives shown in Figs. I and 3. In the first embodiment, the kinematic connection is lost only between the cylinders of the printing section, which are on opposite sides of the printed tape by means of gears formed by the wheels 37 - TO, In this embodiment, the wheels 38 and 40 are not engaged with each other and two actuators of the automatic longitudinal register control system with MOBILE parts 32 and 33 (Figures 1 and 2) are used. The section 34 of the communication shaft is complete. flexible.

The second variant differs from the first one in that the rigid kinematic connection between the cylinders of each printed section is made by intermeshing gear wheels fixed on the ends of all; section cylinders, i.e., through gears 37-38 , 39-40 and 38-40. In this embodiment, it is possible to use both two parallel actuators and one for each section. When using one actuator on the printing section, the communication shaft section 34 is rigid, and when using two parallel actuators, the communication shaft section 34 be made or flexible (in this case, two parallel operating automatic systems for controlling the longitudinal register of the print are used both from the face and from the turn of the tape) or rigid (in this case tea is25

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one automatic longitudinal register control system is used).

Sensors 4I and 42 of the angle of rotation of induktoshiny are connected with the shafts of the plate cylinders I and 2, and speed sensors 43 and 44 (tachogenerators} and acceleration sensors 45 and 46 (accelerometers) are also connected with gears.

In order to control the tension of the tape 6 of the material being printed between sections, some of the tape guiding rollers 5 are fixed on swinging

15 levers 47, the free ends of which interact with sensors 48 (for example, j piezoceramic), which follow the tension of the tape between the sections.

2Q To control the position of the belt 6 relative to the cylinders of the printing sections, in the first embodiment of the kinematic connection between the cylinders inside the section, photosensors 49 and 50 are used to monitor the reference marks printed on both sides of the tape by the corresponding forma cylinders 3 and 4 in each printing section ,

In the case of a rigid kinematic connection between offset cylinders by engaging gear wheels 38 and 40 (the second embodiment of the kinematic connection between cylinders inside section /, one photosensor 49 (or 50) can be used in each printing section and one sensor 41 (, or 42) angle of rotation, sensor 43 (or 44J speed, sensor 45 (or 46 accelerations.

The drive of the folding section also contains differential mechanisms 26 with two degrees of freedom, connected to the sectional electric motor 17 by the driving shaft 51, and between them by the rigid shaft 52. At the same time, the driven members of these mechanisms are kinematically connected by simple gears (similar to the gears 24, shown in figure 2). with shafts of 8 and folding 7 cylinders by means of a gear 53 with a movable part 54 of the supplier of the automatic longitudinal register control system, and through gears 55 and 56 and a rigid shaft

thirty

35

40

45

50

57 with lentodupushm cylinder 9, after ice {yi through gears

58 and 59 and the flexible shaft 60 is connected to a flexible closing shaft 36. The image of this shaft in some sections with a dashed line means that it can be connected to other (printed and folding) sections

The rigid kinematic hatching of the folding and rubbing or cutting wheels is carried out by engaging the gear wheels attached to these cylinders.

To control the parameters of rotation of the cylinders of the folding machine, the sensors of angle of rotation 41, speed 43 and acceleration 45, kinematically connected with the folding cylinder 7, are also used.

In the drive circuit shown in FIG. 3, one sectional motor 61 is used in each printing unit, and a folding motor in the folding unit 17. The motor 61 is connected via a drive shaft 62J of the rigid shafts 63 and three differential mechanisms 26 with two degrees of freedom with offset cylinders 3 and 4. Differential wheels 23 mechanisms 26 (fig. 3) are connected by means of rigid shafts 64 with leading links of differential mechanisms coaxially with the forme cylinders which are made with three degrees of freedom (fig4) and together with the output gears in fig. 3 It means conventionally numeral 65,

The carrier 66 of each differential mechanism 66 (FIG. 4) drove by means of satellites 67 and 68 to the driven gears 69 ,, 70 and 71, the latter, in turn, are connected respectively by means of prostap: servo gears 72 to the shafts of the forme cylinders 1 and 2 also with the help of simple gears: gears 73 and 74 and rigid shafts 75 (FIG. 3 and 4 with moving parts, respectively 76 and 77, of the mechanisms of the automatic register control system and through flexible shafts 785 gears 79 with closing flexible shafts 80 and 81 accordingly but printing cylinders) and 2,

The drive of the rebate for this circuit is associated with only one of the locking shafts, for example with Eialom 80.

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The image of JI cue, and their shafts 80 and 81 with dotted lines also means that Tfx can be connected to other sections (printing and folding),

Flexible closure shafts 80 and 81 are connected to the last printing section in the machine through differential mechanisms 26 with two degrees of freedom, in contrast to connecting them to the first and intermediate printing sections through differential mechanisms 65 with three degrees of freedom,

The kinematic closure of the cylinders inside the sections is carried out in the same manner as in the drive shown in FIG. and 2.

In the described drive (fig.Z used the same sensors as in the previous drive,

The difference between the press drive of the printing machine (Fig. 5) and the one described (Lig. 3) lies in the absence of flexible closing shafts 80 and 81 connecting the printing and folding sections and, consequently, the difference in the design of differential mechanisms 26 that are coaxial with each other. plate cylinders. These differential mechanisms are made with two degrees of freedom, with one of the driven units connected to the shaft of the corresponding plate cylinder, and the second through shafts 75, gears 74 to the subfragment parts 76 and 77 of the actuators of the automatic register control system.

On the schematic diagram of the automatic register management system of longitudinal register printing on both sides of the tape, shown in Fig. 6 in the form of a flowchart with detailing it to work out one of the possibilities, it is shown that the deviations of the relative positions of the mold plates and the folding of the cylinder are shown forming signals 3. proportional to the angles of rotation of the plate and folding cylinders, sensors 41, 42 (Fig.1-3.5)

The generator 82, through phase-shifting nepochechka 83 and amplifiers 84 and 85, supplies the supply voltage with a shift of 90 into the wrap 86, and the stator windings of all inductosines are connected to the vin to create a nodding magnetic field. Moreover, the indices of 4 C,. ,, ,, I are intended

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for measuring the angles of rotation of the forme cylinders in printing devices that perform printing, for example, on the front side of the belt 6, and the inductors 42, ..., 42 for measuring the angles of rotation of the forme cylinders in the printing devices, which print on the reverse side of the ribbon, The stator windings are rigidly connected to the machine bed, and the rotor windings are connected to the shafts of the plate and folding cylinders. Voltage phase change at the terminals of the rotor windings of inductosies due to the rotation of these cylinders after passing through the rotor amplifier 87 (87i, 87.,. 87 (j in si The automatic register control system on the front side of the tape and 88 (88, 882., ..., 88; j) in the automatic control system of the register on the reverse side of the tape, as well as through the corresponding phase shifters 89 and 90, is one of the inputs of the corresponding phase-sensitivity - the rectifier rectifiers 9.1 and 92, the second input of which is connected to the generator 82. The output voltage of the connectors is 91 and 92 in the form of signals H, and d, ACH and ... HF,, ... and ikM - t proportional to the angle of rotation of the corresponding forme cylinders 1 and 2 of printing devices that perform printing e belt with both front and back side, together with the transformed signals from other sensors (D F, - - by tension sensor tape general control systems for automatically register for li7tevoy and reverse sides of the belt; de;, P1, - from photoelectric sensors, following the control marks printed in different printing equipment, respectively, from the Li and reverse sides of the tape, and f, V - and -, respectively, from speed sensors (for example, tachogenerators) and from acceleration sensors ( for example, accelerometers) associated with the shafts of the forme cylinders 1 and 2; AY., And

do; - from the phase-sensitive rectifier in the position control chain of the subsequent plate or folding cylinder 5c, are input inputs of summation devices 93 and 94 (parameter matching devices), respectively. The signals on the outputs of the summers are input signals for the corresponding 144888

Amplifiers 95 and 96 ,. the output signals of the latter are also input signals of the corresponding actuators, made, for example, in the form of electromagnetic powder brake couplings, the fixed parts of which are fixed on the masking frame, and the moving parts 32, 33 or 76, 77 and 54 are connected JQ with the corresponding followers of the differential drive mechanisms of the corresponding printing and folding machines. The excitation winding of the electromagnetic one-piece brake clutch of each actuating device is connected to the rotor of the corresponding phase shifter 89 or 90, which can be made, for example, combined with 20 inductosin. These links between these elements are reflected in FIG. 6 by double lines.

The operation of the proposed devices is as follows: 25 Sectional drive electric motors 15 and 16 of the printing sections (FIGS. 1 and 2) transmit the drive units through the driving shafts 18 and 19 to the m - drivers 20 s satellite 30 dyg wheels 21 first differential mechanisms with two degrees mi freedom. The latter distribute the movement to the driven gears 22 and 23, the first through the gears, 24 drive the plate cylinders 1 and 2, the second through a gesture: their shafts 25 drive the drive links — the carrier of the second differential mechanisms also with dd two degrees of freedom. As in the first differential mechanisms, one of the driven wheels of the second differential mechanisms by means of gears ensures rotation of the printing section cylinders, only offset 3 and 4, rotation of the other driven wheels 27 are interconnected both within each printing section, as well as and in various printing sections, as well as with moving parts of executive devices of the automatic register management system,

The closure of the rotations of the cylinders inside each printing unit, depending on the version of the kinematic connection between the cylinders of the printing unit used, can be carried out | in two ways: or separately for

CYLINDRO13 printing apparatus section, providing sealing tape on both sides, or together all the cylinders of the printing apparatus of each printing section.

The closure of the rotation of the folding and chopping cylinders inside each folding section is carried out by a rigid kinematic connection between them,

To compare the phase positions of the section cylinders and the position of the tape relative to them, the angles of rotation of the plate cylinders 1 and 2, as well as the folding cylinders 7 (i.e., their relative positions) angular velocities and accelerations of these cylinders are measured using appropriate sensors. In addition, a measurement is taken of the tension of the printed tape between the sections, as well as the relative position of the check marks 5 printed on the tape in each printing section. The information received from all the listed sensors, in the form of electrical signals proportional to the values of D F-, Л Lfj uVj, is received} in adders 93

automatic register control systems from the front of the tape, and

proportional to the values of uF ,, & tj i T uY YI, f. The incoming voltage into the adders 94 of the automatic control system of the register on the reverse side of the tape (FIG. 6) is converted into a control action — the power supply voltage of the katutaki electromagnetic brake, respectively, 32 and 33 or 76 and 77, i.e. is converted to input signals of executive mechanisms, the moving parts of which control the driven scaffolds 27 second differentials; the first drive mechanisms of the printing and folding sections. These wheels are supporting in the drive of each of the two pairs: plate - offset cylinders - in the printing section, chop - folding cylinders - in the folding section. In this case, each driven wheel of sectional differential mechanisms 26 is a reference in the transmission of torque to the rest of the wheels of these differential mechanisms. As a result, the closed differential gear used to drive all sections of the machine, the differential mechanisms of which have

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Driving wheels associated with section cylinders and with a flexible closure shaft are sensitive to changes in torque on the shaft of each cylinder and respond to this change in such a way that the magnitude of the moment deviation redistributed between the shafts of all cylinders and depending on the magnitudes of the moments on them and from the gear ratios between the driving units and the driven wheels of differential mechanisms. In this case, there is an increase in the speed of those driven wheels, the moment of resistance on which 5, for example, due to the opening of the gear gap not often to any driven wheel. Therefore, the engagement of gears of the locking gears all the time automatically (regardless of the change in the load acting on the cylinders) is provided with a signified loading that keeps the contact of the gear pair of the locking gear constant, the relative positions of the driven wheels 27 of the second differential mechanisms in each printing section, depending on the jet torques developed on the movable parts 32 and 33 of the actuators, the position of the offset cylinders 3 and 4 rel is determined and adjusted. As regards the gaps in gears 37-38 and 39-40 between offset and plate cylinders, they are guaranteed not to open when the machine is running, they also determine the position of the plate pilins 1 and 2 relative to the tape (and offset cylinders). Adjusting the positions of the wheels 27 by means of actuators determines the position of impressions applied to the tape 6 on both sides, while the relative positions of these wheels in different sections determine the combination of colors on the print (on both sides) applied in different printing sections.

Since the use of closed differential gears with the implementation of cylinder closing movements both within sections J and between sections ensures the operation of these drives without opening gaps in all the gears of the drive gears of the machine drive, it ensures accurate execution of all commands of the automatic register management system and steady from the nose the position of all cylinders in different sections during the development of external disturbances j acting on the cylinders of the printing sections from the side of resistance forces paint apparatus, as a result of intermittent onslaught in the contact zones of the cylinders due to the presence of grooves on the surfaces of the cylinders, as well as from the side of the printed tape due to the oscillation of the Institute of tension (and on the cylinders of the folding sections there are resistance forces for cutting the ribbon with the knife of the cylinder)

Execution devices of the automatic register control system in this drive provide adjustment of the relative position of the cylinders in all sections due to force from their sides on the section cylinder actuator, this leads to an adjustment of the balance of forces acting on the drive of each section, which ensures working off This method of powering of the perturbations causing disturbances in the coordination of the motion of the cylinders and the tape, and as a result, ensures the stability of the relative position of the cylinders and the tape at different changes in press operating modes.

Use in the proposed printing machine drive two sectional motors for driving each printing unit of the machine, a flexible locking shaft connecting the inner cylinders of all printing units to each other, as well as two actuators of the automatic system regulating the loading of the corresponding parts of the printing units located on opposite sides of tape can reduce the power consumed by electric motors to drive the cylinders of the sections due to the decrease in the number of gears and driven bodies belonging to each sectional electric motor, and thus reducing and losses to their drive; reduce the energy consumed by the actuators, and hence their dimensions, which will improve the layout and

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reduce the overall dimensions of the machine, as well as provide the possibility of independent longitudinal registration of print on both sides of the tape being printed, which will increase the multi-color accuracy of two-sided printing,

The longitudinal register control on both sides of the tape can be controlled by separately operating two identical register management systems for both sides of the tape, carried out by separately using photo sensors located on both sides of the tape being printed, followed by check marks on them, with using separate sensors of rotation angle, speeds and accelerations of the forme cylinders 1 and 2, when using two actuators, the moving parts of which are connected with the driven wheels are sectional x differential mechanisms receiving the drive from the respective sectional electric motors and in the absence of communication between the gears 38 and 40 of the closing gear inside the printing sections, as well as using a flexible shaft 34 of the connection between the driven wheels 27 differential drives of the two printing units of the printing section. In this case, for both automatic control systems the same and the same tension sensors of the sealed tape are used. The use of the proposed drive with the automatic register management system described above ensures that a high possible nanobassing accuracy of the longitudinal registration of the tape, its stability in obtaining high-quality multi-color prints on both sides of the tape.

The longitudinal register control can also be controlled by using one automatic system for both sides of the tape at the same time using one photosensor following the check marks on only one side of the tape, one of the angle of rotation, speed and acceleration sensors, respectively, one of the form cylinders 1 or 2, as well as with the use of one or two parallel actuators, connected with a rigid coupling shaft 34 and with 13

the gears of the 38 and 40 sectional gearboxes pefedacio

The control of the tape drive in the folder is monitored by the Toi i automatic register management system, using it, the signals of the sensors of the angle of rotation 41 of the speed of 435 acceleration 45, associated with the folding folder; 7, and exerting a control action on dAl 1CHILE J-ndrn of the TV unit and from the complete device, but the moving part 54 is connected with the driven wheel of the disperser: cial1, mechanism 26 with whom falidilindrom

M-drive with this register management system C) b and ;; peaks the higher accuracy of the tape register than on the other hand in order to get high-quality multi-color impressions on both sides of the tape while automatic registering system of more growth than the previous one

The operation of the device, represented on FIG. 3, is characterized by the fact that the cylinder in each printing section is communicated by one sectional electric motor 615 and the closure of the rotation of the cylinders of all printing sections is monitored, two gi.k-ktgzht - closed by shafts 80 and 81 (Fig 3.4). At the same time, to control the energy balance of the drive of each printing unit, the movable parts 77 and 78 of the actuators are connected to the driven members of the sectional differential mechanisms with CTOpov: r; Formin cylinders,

The closure of the rotation of the cylinders inside each print section of the mocket is the same as in the device; shown in FIG. 1 in two ways. This is exactly the same with all the sensors in the automatic registry control system;);

The advantage of the device, represented by Lennon GO ma. FIG. 3, compared with the device ;, shown in FIG. I, is the 3 Bpeh eHH reduction in the processing of the signals by the automatic register control (reducing the latency) due to; 5 hr5 5} kenn control acting from the side of the actuator to the T-cylinder, carrying the first

to companion cylinder information oam

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and intersection closure of movements through differential mechanisms and also of these form cylinders. As a result, the accuracy of longitudinal registration of the ribbon, and hence the quality of polychromatic prints on both sides of the tape, increases. The use of flexible closure shafts in both drives provides for increasing the rigidity of the connection between all the printing and faltyping sections, which improves the speed of the automatic longitudinal register control system and, consequently, the accuracy of multi-color printing and processing of the printed tape in the folder,

Relative positioning of the cylinders in different sections, providing the necessary accuracy of combining the inks, folding and cutting of the tape can be accomplished by regulating the energy balance of different sections by only controlling the actuators of the sections from the actuators of the automatic control system with the longitudinal register. Therefore, in order to simplify the design of the drive, improve its maintenance, reduce its metal consumption, and consequently, the inertia of the drives shown in figs 1 and 3p can also be performed without flexible locking shafts (figs 5)

Thus, in the proposed drives, multi-section rotary-1 to 1 h printing machines with multi-cylinder printing sections for two-sided printing and means for controlling longitudinal movement of the tape provide for the use of differential mechanisms in the transmissions of this sectional electric motor (or electric motors) to the cylinders of the printing and folding sections; rigid kinematic closure of the gate of these cylinders inside each section and between sections, using two automatic control systems for longitudinal belt opening.

The advantages of the proposed drives are ensuring the operation of the gears of the drive without opening the gaps in them, increasing the consistency of the cylinder movements in the sections and the tape being printed, which means that

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improving the accuracy of longitudinal register tape, improves the quality of multi-color two-sided printing, improves drive dynamics and increases machine speed, as well as reducing set-up time for printing devices for multi-color printing, a significant decrease in acceleration and stopping time, both for individual printers and folding machines, and for all ma - types and general.

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Claims (4)

J. DRIVE OF A ROLLED ROTARY PRINTING MACHINE 'WITH MEANS OF RE-. G'ULATION OF LONGITUDINAL MOVEMENT OF TAPE MATERIAL, containing sectional motors connected by drive shafts through differential mechanisms to cylinders at the inlet of printing units of printing sections and folding section, simple gears between cylinders in printing units of printing sections and folding section, locking means connecting the cylinders sections, and a control unit for longitudinal registration of printing and folding, including kinematically connected with cylinders at the outputs of printing and folding of the sectional actuators and servo devices electrically connected through appropriate adders, having photoelectric sensors for tracking marks on the front side of the printed tape, connected through phase-sensitive rectifiers, angle sensors for turning the folding cylinder, designed to seal the front side of the tape for plate cylinders, these speed sensors cylinders and belt tension sensors, characterized in that, in order to improve the accuracy of coordination of cylinder movements ditch sections of the machine multi-color two-sided printing and the processed tape, it has an additional control unit for longitudinal registration of the press with series-connected phase-sensitive rectifiers and adders, including kinematically connected with cylinders at the outputs of printing devices designed for printing on the back of the tape, actuators and electrically connected them through the respective adders of this control unit tracking devices having photoelectric sensors for tracking marks on the reverse side of the tape to be sealed, rotation angle sensors for sealing the reverse side of the ribbon of plate cylinders associated with phase-sensitive rectifiers of this unit, and speed sensors of these cylinders, and additional gears connecting the cylinder shafts to each other in printing presses sections and folding sections and cylinders at the outputs of the printing apparatuses of the printing sections and folding sections with actuators of control units, while dy phase sensitive rectifier both control units in each printing unit associated with individual adders corresponding to the given printing station. 2. Drive pop. 1, with a rani and the fact that the tracking devices SU „„ 1214488> both control units are additionally equipped with acceleration sensors kinematically connected to the plate cylinders of the printing apparatuses and to the folding cylinder of the folding section and electrically connected to the respective adders, 3, Drive according to claims 1. and 2, characterized in that the number of sectional electric motors in each printing section is equal to the number of printing apparatuses included in it. 4. The drive according to the town, 1-3, with the fact that the closing means is made in the form of electrical connections between the adders of both control units.