SU1211191A1 - Device for pasting tapes on roll machines - Google Patents

Description

FIELD OF THE INVENTION The invention relates to printing iromyilization and can be used in web-fed rotary printing machines.

The purpose of the invention is to increase the reliability of operation by reducing the tension fluctuations when the rolls are not cut.

FIG. Figure 1 shows the general scheme of the device in a three-beam roll charge of a rotary machine; in fig. 2 and 3 are schematic block diagrams of the device; in fig. 4 and 5 are diagrams of electrical contact switchgears on the shaft of roll stars.

A device for gluing on coil mounts. X contains a roll star 1 (Fig. 1) with its rotation drive made in the form of an electric motor 2 and a gearbox 3. On beams 4, 5 and 6 of a roll star 1, they are fixed in centers 7, 8 and 9, respectively, the rules: 10 - unwinding (waste), 11 - new prepared for gluing, 12 - newly installed. Moving parts are rigidly connected with centers 7, 8, and 9, and electromagnetic brake clutches 13, 14, and 15 are placed at the free ends of the rays. On the roll star I, they are placed between the rays of the stars of support 16, 17, and 18 for the printed tape. The device also contains a pre-acceleration node of the next new, i.e. prepared for gluing roll 11, which includes frame 19 with pulleys 20 and re mn 21 (rotational drives of the frame and belt movement are not shown), the auto-gluing unit contains frame 22 installed near the zop unwinding and prepared for gluing the rolls, and ; a brush 23 and a knife 24; a photovoltaic device consisting of a photo sensor 25 and an electric bulb 26 mounted on a frame 22.

In addition, the auto-glueing device also contains tachogenerators 27 and 28, the moving parts of which are connected respectively to the surface of the newly prepared reel 1 1 and the cylinder shaft of the tape-leading pair 29, interacting with the tape 30 of the unwinding roll.

The device contains two systems connected to each other during the period of auto-gluing by means of a voltage divider 31: a gluing control system 32 and a mite tension automatic control system 33 (Figs. 2 and 3). The automatic belt tension control system 33 has a voltage output amplifier 34, the outputs of which are connected (Fig. 2) with fixed contacts of a voltage divider 31 and through adjusting resistances 35 and 36 with control windings 37, 38 and 39 of electromagnetic brake roll clutches 13 , 14 and 15, respectively (Fig. 1), by means of fixed contacts 40, 41, 42 and 43, connected with the machine bed, and the corresponding moving contacts 44, 45,

46 and 47 (Fig. 2 and 4), attached to the shaft of the coiled star 1.

The system 32 for controlling the process of gluing tapes is equipped with a voltage adjuster 48, made, for example, in the form of an electric motor or a conventional electric motor in combination with a gearbox. The motor control winding is connected in parallel with the electromagnet 49 of the brush mechanism. The variable resistance 50 serves as a control for adjusting the magnitude of the speed of the control winding of the electric motor 48. The movable part of the electric motor 48 is connected to the movable contact 51 of the load divider 31 and to the movable mountain.

WHICH 52.

In addition, the system 32 has a trip switch: g) a reader 53 connected to the output of the system 32 and the electromagnet 54 of the knife mechanism.

The device also contains a switching unit electrical contact switchgear supplying windings 37, 38, 39 for controlling electromagnetic brake couplings. It has movable contacts 44-47 fixed on the shaft of roll star 1 and fixed contacts 40-43, which interact with movable contacts (Fig. 4).

The power supply circuits of the brake clutch control windings 37, 38 and 39 have contacts 55 and 56 for connecting the amplifier 34 of the system

automatically adjusting the tension of the tape 33 with control windings 37, 38 and 39, respectively, through voltage divider 31 or its mine, and through contacts 57-68- to connect these control windings to amplifier 34 through voltage divider 31 or mine when changing unwinding rolls, fixed on different rays.

The differences in the block diagram of the auto-gluing device shown in FIG. 3 and 4,

The fact that the electrocontact switchgear supplying the windings 37, 38 and 39 of the control of electromagnetic brake couplings has three pairs of fixed contacts 69 and 70, 71 and 72, 73 11 74 fixed to the frame and connected to the voltage divider 31, and three pairs movable contacts 75 and 76, 77 and 78, 79 and 80, interacting with the corresponding stationary contacts and connected to the ends of the respective windings 37,

38 and 39 of the roller brake clutch control. The power supply circuits of the brake clutches 37, 38 and 39 for controlling the brake couplings of this block diagram for connecting them to the amplifier 34 are formed through a voltage divider 31 and contacts.

The system 32 for controlling the process of gluing tapes of this flowchart is equipped with an additional limit switch 93, and a slide 94 connected to the moving part

unit 48 is made two-profile for interacting with the corresponding limit switches 53 and 93. At the same time, the control circuit of the electromagnet 54 of the knife has contact 95.

The device works as follows.

At the end of the unwinding of the roll 10, which is decelerated by the electromagnetic () Gl clutch 13 controlled from the system 33 for automatically adjusting the tension of the tapes, the end of the tape of the roll 11 is lubricated with an axle and fixed on the surface of an ohm / yunnaya; The system 32 is turned on to automatically control the process of gluing tapes, which makes it possible to lower the frame

22 using the appropriate aiero drive (not shown) and turning roll star 1 by means of an electrode in the drive unit 2 and gearbox 3 until the intersection of the turn of the roll of light beam 1. falling from the light bulb 26 to the photo sensor 25 (this position of the roll is shown in Fig. 1). In this case, a special section of the tension terminating tape 30 is formed between the surfaces of the support 16 and the ribbon-holding cylinder of the ribbon-drivers of the pair 29.

After the roll star turns, the frame 19 is accelerated until the new 21 prepared for gluing the roll 11 is tightly compressed by the belts 21 and the drive of their acceleration, and hence the acceleration of the roll I, turns on, and the acceleration of the roll 11 of the tape 30 is fixed, which is fixed For example, tachogenerators are respectively 27 and 28. Upon reaching the coincidence of these speeds, the electromagnet 49 (Fig. 2) of the brushes is triggered.

23 (Fig. 1), and the brushes press the moving tape 30 to the surface of the roll 11 and glue them together, after which the joint movement of the two glued tapes, the old tensioned and the new non-tensioned, begins. After gluing (privately after passing the bonding area of the contact of the ribbon-leading pair 29), the command 19 comes from the chain that controls the operation of the brushes, removing the frame 19 from the new coil (lifting the frame).

Simultaneously with the operation of the electromagnet 49, the closure of the contacts 55 (Fig. 2) and the opening of the contacts 56 (contacts 57 and 64, 59 and 65, 61, and 66 will be closed, and the contacts 58, 60, 62, 63, 67 , 68 - open) and closing the connection circuit of the control winding of the setting device 48 to the tape glueing control system, which causes the moving part of the setting device 48 to move with the moving contact 51. This contact moves from the leftmost position to the right (according to the drawing in Fig. 2) along the divider 31 voltages, fi itel 34 system 33 cars

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matic adjustment of belt tension. At the same time, the voltage taken from the right end of this. 1 31 voltages to the winding 37 of the control of an electromagnet braking clutch 13, I; 1, which causes the MOJMCHT braking on the pox of the roll 10, to decrease, and so the force of tension is reduced to 1: 1 / leiiTbi,:): roll 10.Ipi; In this, the voltage dropped from the left KOiUi.a del Pel 3 to the winding 38; 1) ai, elsktrol; Agntiy TOpMOSHoii 4. coupling increases, as a result of which Hf the braking torque ooi: P. and the value of G1 is increased by ;;;: T; 5zhen K. iCHiij, expanded with pv.ioiia P and prikkcheomom to tape, razma-: o: oyomop.-gu.och: iO. ; :; iu i gb razsm, p rez,: - /, iio; j .-. apsi-one., kkgpi:, ia- right 1and yYL-; -; iL,.,, L iiaiipH- zhpi ;;:. ;) races; ich division of the brake pier mol-ekg -:; -:. :.: - v ,, - :: p | l, and the old 1-1 HOBOi; . ciiT. (. LO;) 1 .. g; - that the redistribution of the regulations of the rusts 110C1) by the regulation unit resisted:; -: -; .50 in the power supply circuit of the control motor winding 4th. Redistribution: at the same time, the old 11 new years are produced so that the sum of the tension values of the old m new ribbons to the glueing area remains paBiioii nlg - the same old old ribbons after the glueing location, 1ent; The torm () 31i) th moment applied to the old roll after gluing is reduced, for example, to zero, with the slide. paper on po. the limit switch 53, closes the control circuit of the electromagnet 54 of the knife mechanism, and the last one cuts the old tape by striking the knife 24 against the tape 30 at the place where it contacts the support 16.

The voltage taken from the left side of the voltage divider 31 when cutting the old tape ensures that the tension of the tape is equal to or different from the machine by the allowable amount that does not cause the tape to break or the print longitudinal print is more tolerant than at the same time, the old tape is zero or does not exceed the specified permissible value.

The adjustment of the braking torques developed by the electromagnetic clutches 13 and 14 during the auto-gluing process is carried out by adjusting the resistances 35 and 36, respectively, in the power supply circuits of the control data windings of the couplings.

After the knife mechanism triggers this automatic control by gluing tapes, the contacts 55, 58, 66 are disconnected and the contacts 56 and 60 are turned on, as a result of which the output voltage from the amplifier 34 is fed directly to the winding 38 of the electromagnetic brake control

connected to the unwinding of the roll 11. Thus, the control of the braking moment applied to the new roll after all the unreclaimed operations of the sacking process goes directly to the automatic tension control system until the end of the unwinding of the hinge. After the above operations of switching the circuits to the control winding of the setting block 48, the glueing control system 32 receives a signal to reverse the control of the setting gauge 48, and the moving contact 51 of the voltage divider 31 returns to the initial extreme left position. At the same time, however, the signals of these systems, which, for example, come from devices, carried out the actuation of contact 55 (or 59), are made to lift the frame 22 of the auto-gluing to the initial position. turning the roll star wheels to clockwise to set the new roll to the working position. After the end of the unwinding of this roll, all operations performed by the automatic control system of gluing tapes and the replacement of the newly developed roll with a new one are repeated.

However, when connected to the unwinding of the roll 12 and the end of the unwinding of the roll 11 to control the current, supplied to the windings 38 and 39 of the electromagnetic brake couplings during the auto-gluing of the now ending roll 1 and prepared for gluing the roll 12, when An additional connection to the usable 34 de: 1 voltage body 31 by disconnecting contact 56 and turning on contact 55, contacts 61, 60, 65 and 58, 64 and 63 are turned on, contacts 66, 57, 59, 62 are disconnected, 67, 68. After cutting from the roll 1 1, the contacts 65 n are additionally disconnected to include contacts 59.

When connected to unwinding roll K) and terminating unwinding roll 12 to control the voltage, the inputs to the windings 31 and 33 of the electromagnetic brake clutches are set to autoscrew. The kits of the terminating roll 12 and the roll 10 prepared for gluing together, when the voltage divider 31 is connected to the amplifier 34, disconnects the voltage 31, the contacts 56 and the contact 55, turn on contacts 67 and 59, 60, 66, 62 and 68, turn off This way, pins 57, 58, 61, 63, 64 and 65. After cutting the tape off the roll 12, pins 62, 68 are additionally disconnected.

The difference in the operation of the device shown in the block diagram in FIG. 3, from the operation of the device in FIG. 2 is to use, for connecting the windings 37, 38 and 39, to control the braking roll-over sleeves of the moving part of the setpoint 48 both to the right and to the left (according to the drawing).

In this device, divide; 1–31 the voltage is constantly under the voltage of the output amplifier 34.

When the electromagnet 49 is triggered, a circuit is connected that connects the control winding of the setting device 48 to the network for controlling the process of gluing tapes. This leads to the movement of the movable part of the setting device 48 together with the moving contact 51 and slide 94. At the same time, the moving contact 5 is not moved from one extreme position to the other along the voltage divider 31.

Consider the consistent operation of the unit 48, the associated rolling

co-tuple 51 and divide; 1 voltage 3 to the control windings of 37, 38 and 39 different braking clutches, connected by means of corresponding cohg cables from the KOHTaKTOii 81 --- 92 series.

The path, the pacrimer, the moving contact 51 is in the extreme position, and the contacts 81, 87 and 82 are closed (-l and provide the closure of the coil circuit 37 ps) of the voltage divider 31 and the supply of the maximum voltage (regulated by the system 33). from it to the control winding 37 of the rolls (brake), interacting with the unwinding roll (for example, roll 10).

As roll 10 is triggered, however. I have been described above, the control system 32 and the process of gluing tapes ensure the inclusion of control value; 49-magnet electromagnet triggered the mechanism of the brushes, performed by the youngs pressing the le1-: you with the sp; -both ruyun 10 against the surface of the roll 11 prepared for gluing. During operation, the electromagnet 49 rtieTOK closes the contacts 83 and 84, 90, hl1Controlling the winding brake control 38 of the r-slider I and the cutting end of the voltage divider 31, as well as closing the circuit,

connecting a winding device; 1 control unit 48 to the auto-gluing control system 32, which leads to the displacement of the node of the mobile part of the control device 48 together with the node 1 m 51 contact from left to right, and VTOM hill 94 moves away from the nute (end Hoi f; ) switch 93, which leads to the disconnection of it from the control value of the electromagnet 54 of the knife 24.

As you move the moving contact 51, the voltage taken from the right

the end of the voltage divider 31 to the winding 37 of the control of the electromagnetic magnetic brake clutch 13 decreases, and the voltage taken from the left end of the divider 31 to about 1 () of the electromagnetic control cable 38

the brake clutch 14 is increased, as a result, tension is redistributed between the tapes unwound from the old 0 and the new 11 rolls.

When the slide 94 approaches the extreme right position, it presses the limit switch 53, as a result of which the contacts 95 and the knife electromagnet control circuit 54 are closed. As a result, the knife cuts off the tape unwound from the old terminating roll 10. At the same time, the control winding 38 of the electromagnetic brake 14 of the new roll II from the left end of the voltage divider 31 is supplied with the maximum voltage, also controlled by the system 33.

The operation of the electromagnet 54 of the knife ensures the opening of the contacts 81, 87 and 82, and thereby the disconnection of the control winding 37 from the voltage divider 31.

As the unwinding of the roll 11 ends, the auto-gluing system 32 in exactly the same sequence provides connection to the right end of the voltage divider 31 of the electromagnetic winding control winding 39 of the roll 12 by closing contacts 85 and 91, 86 and moving slide 94 to the left by reversing the setting device 48. At that the voltage removed from the left end of the voltage divider 31 to the winding 38 decreases, and the voltage removed from the right end of the divider 31 to the control winding 39 decreases.

When the slide 94 leaves the track switch 53, it is disconnected from the control circuit of the electromagnet 54 of the knife 24.

When the slide 94 approaches the extreme left position, it presses the limit switch 93, as a result of which the contacts 95 and the control circuit of the electromagnet 54 of the knife are closed and the knife cuts off the tape unwound from the roll 11. The operation of the electromagnet 54 of the knife thus opens the contacts 83 and 84, 90 and disconnecting the control winding 38 from the voltage divider 31. Thereafter, a maximum voltage is supplied to the control winding 39 from the right end of the voltage divider 31.

As the unwinding of the roll 12 ends, the auto-gluing system 32 triggers the brush electromagnet 49, connecting to the left end of the voltage divider 31 voltage of the control winding 37 electromagnet to the foot of the roll 10 brake newly prepared for gluing, by closing the contacts 90, 88, 81 and 82 contact 51 to the extreme right position, cut the tape from the roll 12 and the opening of the contacts 85 and 91, 86.

As the unwinding of the roll 10 ends, the auto-gluing system 32 triggers the electromagnet 49 brushes, connecting to the right end of the divider 31 the voltage of the control winding 38 of the electromagnetic brake of the roll 11, also newly prepared for gluing, by

j contact closure 83 and 89, changing the moving contact 51 to the extreme left position, cutting the tape from the roll

10 and disconnected contacts 90, 88, 81 and 82. As the unwinding of the roll 11 is completed

The auto-gluing system 32 ensures that the electromagnet 49 of the brushes is activated, connecting to the left-hand end of the voltage divider 31 the coil of the control winding 39 of the electromagnetic brake of the roll 12, also prepared for gluing, by moving the contacts 85 and 92, 86 to the extreme right, a piece of tape from the roll

11 and contact opening 83 and 89.

As the unwinding of the roll 12 ends, the auto-glueing system 32 provides for crushing the electromagnet 49 brushes, connecting to the first end of the voltage divider 31 of the winding 37 controlling the electromagnetic brake of the roll 10 by closing the contacts 82 and 87, 81, and moving the movable contact 51 to the extreme left position , cutting the tape from the roll 12 and opening the contacts 85 and 92, 86. A further cycle of connecting the windings 37, 38, 39 of the control of the electromagnetic brake couplings of rolls 10, II and 12 is repeated, while ensuring that

0 voltage surges applied to the windings 37. 38, 39 of the electromagnetic brake clutch control in the process of auto-gluing due to energization of the control windings of the electromagnetic coil brakes constantly from the voltage divider 31.

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Claims (1)

DEVICE FOR GLUING TAPES ON ROLL MACHINES, comprising a star with an electric drive for turning it, brake electromagnetic couplings placed on the beams of a star for braking rolls, an acceleration unit for a new roll, an autogluing unit with brush and knife mechanisms, a gluing control unit connected to the drive of the mechanism brushes, knife mechanism drive and tension regulator. with output force 19 \ 67, \ Z '*' by tel. connected through a switching unit with windings of brake electromagnetic couplings, characterized by those. ': that, in order to increase the reliability of work by reducing tension fluctuations when reloading coils, it contains a rheostat, a linear electric drive kinematically connected to the movable contact of the rheostat, a limit switch installed for interaction with a linear electric drive at the end of its stroke, with the fixed contacts of the rheostat connected to the output amplifier of the tension regulator, and the movable contact to complement nomu input switching node, wherein the linear actuator is connected to the output of the control unit parallel gluing actuator brushes. and the knife drive through the limit switch - to the gluing control unit. 29 · §.