DE1638006C - Register control device - Google Patents

Description

i 638 006

the section of the sloping voltage of the edge of the voltage signal about 3.6 ° of the total

Represents the voltage signal caused by the occurrence of the revolution and the length of the control signal

of the marking signal is determined, the maximum one total revolution.

In the amplitude of the inclined voltage. Further advantageous embodiments of the invention

is kept essentially constant, so that the 5 are specified in the dependent claims.

Output voltage also the register error in an exemplary embodiment of the invention is

for example between two consecutive standing on the basis of the drawing explained in more detail it

Represents printing works. By showing the maximum. _m sn _e "

Keeps the amplitude essentially constant, Fig. 1 is a block diagram of an inventive

output voltage from the machine speed io device,,.

independent. F i g. 2 a circuit diagram of gate 3 of the error

The technical progress memory 4 achieved with the invention, the bistable circuit 8 and the

step is in particular that the output amplifier 9 in Fig.

signal directly represents the register error signal. Fig. 3 is a circuit diagram of the amplifier / m without it being multi- 15 Fig. 1, _p . . must be plied. The circuit diagram of the oscillator lü m 1-1 g of the magnetic device Fig 4. 1. The voltage signal supplied is for a given Flan- A magnet device 1 generates a_ ^b P ^a " ^nu " 8S "kenstetlheit essentially constant, so that Schwie- signal with the course abde, whose leiiaoscnniu, are avoided, as for example in bd is almost a straight line. The points a and ^ ^ver ~, in a photoelectric scan, 20 used to determine that the front and rear would require a shutter, see that a rectangular control pulse / u determine the on that the lighting can fail and that is used to display a marking signal / u s'-uern originating from the printed area o / elie old.-t.chen estfhl the magnetic device üer passed from a synchronous 25 malian gain control, it means f ir subsequent machining an output pulse similar form ^"ete" '. ^aer i ng of the track rotating magnetic pole piece and, however, has a certain amplitude, wherein the, iier cooperating with the pole piece is fixed to amplitude bd in the arrangement described here coil. The pole piece can be around 12 volts on an approximate basis. vJieibe be arranged. The coil can be made from a 30 This output pulse is fed to a gate i , and commute to a bar magnet, which leads in a second, which generates the control pulse ae; the I eiiab_. oil piece ends and is surrounded by a coil. At cut II of the output pulse of the amplifier z. The rotation of the disc sweeps over the pole - it is also used to cut a capacitor ds the pole piece belonging to the coil, whereby a voltage is applied to the fault memory 4. ir. the coil there: voltage signal is generated. 35 which represents the register error signal. Spjle is adjustable, so that a. A scanning device S has a photoelectnsche a certain point of the inclined cell, the output current of which is about the amount of the Flar.ke dt. Voltage signal occurs. Which is proportional of the incident light So is a supplied to the solenoid voltage signal is WEL marker corresponding slender Mark.erungslei.förmig, increases to a maximum value, generates signal g whereupon 40, followed by extending in a preamplifier ö thickened protect steep inclined edge, until the strengthens and then a maximum value of the opposite gain control is fed to an amplifier 7 with automatic voltage. The control polarity assumes, whereupon it returns to the start-up pulse of gate 3 is used to return the Marfangi voltage. To control the mean steep cut-off pulse in the amplifier 7, ie the section is essentially a straight line. To enable this output amplifier, a pulse from the section is used to generate the register error sensing device 5 only during the output voltage proportional to the output voltage. Since the impulse to let through the defined period of time. Thus, amplitude of the voltage signal of the rotational speed with advocates, Ede repetition of the marker en the magnetic device depends on the voltage of single positive pulse is an amplifier with automatic reinforce- ₅ o supplied on this pulse is the signal from the amplifier 7 of a bistable circuit 8 kungsrcgclung before the voltage signal ^ led. This is a gate circuit that is compared with the marking signal. the leading edge of the control pulse ongescha tetund To prevent that from the pattern or the ^AUI by the marker pulse 3 ^e _e ^looking J _R ^w ™ print image between the marks signals ER- The output of the bistable formwork 8 «j, en1 computing Convinced be, is from the corner pulse of the duration ag. Do this ^ Rech ^ « ^m FJJ»! supplied voltage signal a control signal controls the charging of the capacitor on du: Feh led, whose leading edge corresponds to a point of the front voltage, as described in more detail in connection with Fig - When the marking pulse g

and whose back name corresponds to an oesiimm- «cuu _ui , l _UUIIU v. _w . ^ - r— "

th point on the last section of the span 60 linear section bd of the voltage signal voltage signal after the occurrence of the oblique occurs, the output voltage corresponds to the error-running edge. The waveform is the memory 4 ucn voltage value on the part essentially independent of the speed, so that section bd an, which is just present when the time period between the maximum and the marking signal appears. If the mistake is so big

■ - · - · · · - »- ■ -» # - 1-: ™; ™ »i o..fwiialh rles range

the length of time between the maximum una aem maiiuciuiigaaigiiai _w ™ ,. _uu ..-

Is the minimum of the voltage signal and between the 65, that the marker signal outside the range of the front and rear edge of the control signal always appears bd, the capacitor represents a maxi same partial rotation of the magnetic device. male positive or maximum negative voltage to - for example, corresponds to the sloping charged.

The capacitor of the error memory is connected to the marking signals from the scanning device who input of the error amplifier 9. The output of this amplifier, which is fed to an amplifier 22 via a line 21, has two unijunction and the output of the amplifier is connected in a transistor in an oscillator 10 in such a way that capacitor C 2 is differentiated. The negative impulses that both transistors are switched off when the 5 that originate from the differentiation are zero due to the output of the error amplifier 9. a diode D 3 and a divider circuit with the amplifier output is also limited to the con resistors RS and R 6. The signal that the capacitor of the fault memory 4 is fed back via a timer through the capacitor C 2 and the limiter switch-conductor unit 11, which gradually passes the condensation, is fed to a gate, the capacitor voltage and the amplifier output to zero 10 a resistor / ?? and a transistor Γ 4 is reset This process is linear, so that the shows. When the gate is closed, the tran amplifier 9 is an output signal during a time sistor 7 4 fully conductive, since the base current flows through a span which is proportional to the error voltage, from diode D 4 and a resistor R 8, so that jk _t 'a negligible signal at the collector of the tran- If the amplifier output is greater than a 15 sistor appears. The gate is opened by a pulse given a positive reference value, the corresponding oscillator (advance or delay) coming on line 23 from gate 3 (FIG. 2) opens, the pulse being applied to diode D 4 as an output signal to the pulse transformers 12 and and the current in the resistor R 8 disappears. 13 from whose outputs go to the control electrodes of A much smaller base current flows to the transistor-controlled semiconductor rectifiers 14 and IS. 20 Γ 4 from the collector of a transistor Γ 5. These semiconductor rectifiers are connected via a phase The resistor R 7 and the transistor 7 4 schwaschieber 16 to the lead and lag coil 17 and chen the marker pulse to a substantially 18 of the correction motor. Thus, the amplitude is constant. A feedback switch motor depending on the one feed device is used to bring the base current in the register error or a delay causing a ₅ transistor 7 4 to a value that attenuates the signal in the corresponding direction of rotation during the input pulse by the correct amount, a duration roughly proportional to the error. The positive marking pulse from the collector of the transistor 7 4 is applied by an amplifier 24 to the gain control does not form part of a phase splitting circuit, to which an invention of this amplifier is therefore not more precisely 30 transistor 7 6 belongs. Described in the absence of signals. The gate 3 is shown in FIG. The transistors 71 and 72 form a bi-base which is switched off by a stable trigger circuit consisting of resistors R 9 and R 10, in which both voltage divider circuits normally exist. The amplified, switched from. A negative pulse supplied by the amplifier 24 of the magnetic device voltage signal 35 overcomes this bias voltage, and the resultant is applied via a conductor 19 through D 1 and R 1 to the signal at the emitter of the transistor Γ 6 is applied via a base of the transistor 7 2. At point α of the line 25 applied in order to switch off the trigger circuit - the voltage signal flows into the transistor, as will be described in more detail below. The 7 2. This causes current from the collector of the trans- positive pulse, which is transmitted to the collector of the transistor 7 6 sistor 7 2 by a *. Resistance R 2 appears to the base of 40, is fed to a control transistor 7 7 with autoTransistor 71 flowing, which applies the collector current by matic gain control. This 1 is a resistor R 3 and a diode D 2 to the base transistor due to its Emittcrpotcntials. that of the transistor 7 2 can flow so that both tran- stems from the resistors RIl and R 12, au *. sistors are switched on and switched on and are only conductive when they fail. 45 input pulses exceed a certain value. To turn off the transistors 71 and 7 2 This value forms the delay voltage of the transistor 7 3 is used. The transistor 7 3 automatic gain control of the system in the J is normally conductive, since the base current flows through the resistor R 4, which determines the controlled amplitude of the output. That increased tension. The positive pulses at the collector de signal supplies additional Basisstrotn through the transistor 76 thus causing the transistor T 7. lei I resistance in the first half of the pulse. able to become, and its collector current flows in when the pulse goes negative, the base current becomes a capacitor C 3 and charges it negatively. This is reduced in the transistor 7 3 until at the point that the base current through a resistor R Baasisst rom is 0 and thus the transistor 73 flows out into the base of the transistor Γ S, and is switched as a result. This generates a positive impulse- 55 of which a stronger current flows into the base of the Ti .111 edge at the collector of the transistor 7 3, the more sistor 7 4. This causes the automatic Vcrstiu-base current to the transistor T 2 via a capacitor control.

Sator C 1 outputs so that transistors 71 and 7 2 The trigger circuit 8 is now referred to

stay switched on. If the entry pulse for on F i g. 2 explained in more detail. Basically , if RS persists beyond point c , transistor 60 remains on a bistable trigger, which is normally

7 3 turned off until the point is reached when has transistors 78 and 79 switched. the

the transistor 7 3 begins to become conductive again. negative control pulse ae is generated by a diode D.

This creates a negative edge at its collector - applied to a capacitor C 10 and created in

goal. which the Trai.sistor 7 2 and, accordingly, the one resistor 20 a current flowing into the base

Transistor 7 1 turns off. 65 of the transistor 79 flows. This causes, you Kollek -

In this way, the Stei crimpulsc ae at torstrom through the resistor R 21 to the base of the

the collectors of the transistors T 1 and 7 2 generated. Transistor 7 8 flows. The Kollcktorstrom of the Trans-

Reference is now made to Fig. 3. The sistor 78 flows through a resistor R 20 to

Io

Base of the transistor T 9, so that both transistors remain conductive via a conductor 37 to the unijunction transistor. Oscillators is connected.

They are switched off by the negative marking The transistors T15 and T16 form a time pulse g , which is transmitted to a diode D 11 via transmitter circuit. In the absence of input signals, the conductor 25 arrives (see also FIG. 3). This switches the output of amplifier 36 off through the transistor T 8 and thus eliminates the transistors T15 and T16, which are necessary for a return to the base current in transistor 9. In this way, capacitor C 12 via a resistor R 30 sorden at the collectors of the transistors T 8 and Γ 9 gene, held at ground potential. A resistor R 31 generates square pulses of opposite polarity. and a diode D 13 normally hold the Emit The positive pulse from the collector of the transistor io ter of the transistor T 16 at low positive poten- tial T 9 is a Blök- by a resistor R 22, and accordingly, the transistor T16 is applied kierungsschaltung , and the negative pulse only conducts when at its base (and therefore at the transistor Γ 8, the output circuit is connected to the output of the amplifier 36) are about 0V, led. If the amplifier output is above 0, the

While the transistors T 8 and T 9 are switched on, the transistor T16 and the transistor 715 are switched off, corrections are switched off by a transistor, and in this case the transistor T10, which is normally not conductive Γ12 through the resistor Λ30, is blocked about 4 9 V and the only conducting when the base current charged corresponds as shown by the of the resistors R 32 either in the resistor R22 or a resistor, and R 33 existing voltage divider circuit fixed R 26 flows, that is, when either the gate or the ao is placed. The charging voltage of the capacitor trigger circuit is switched on. If the tran-C12, which is amplified by an amplifier 36, sistor T10 is conductive, it blocks the output power, the output voltage of the amplifier negative, stronger, while the blocking signal via one to the transistor T 16 is conductive, that is, until the Conductor 31 is fed to the unijunction transistor oscillators output voltage of amplifier 0. »5 If the amplifier output voltage is less than 0,

The blocking signal ensures that the entire current of the output circuit flows through the transistor T16 during the short period of time resistor R 31, and the diode D 13 blocks. Ah are out of order when the new marking error as a result of which the transistor T15 turns on and is locked. the capacitor C 12 is lowered to -9 V across the

Signals from the TriggcrschaKur.g are charged to the 30 resistor R 30 and the transistor T15. Output stage created. This makes the output voltage of the transistor a capacitor C 12 (10 microfarads), which forms the Kor-T15 positive until the diode D 13 becomes conductive again, forming a rectifying capacitor. It becomes from that of the ie until the amplifier output voltage is 0. Magnetic device supplied voltage signal on When an error voltage occurs on capacitor C12

Fault voltage charged. This capacitor is fed to 35, the timer circuit operates in first through a transistor T11 to 6.8 volts in a similar way, so that the capacitor Γ 12 charged and is then linearly discharged through a transistor T12 until the output is 0. In this way discharged to the fault voltage. The conductivity are the corrections of the capacitor C 12 also Transistor T12 is proportional to the error due to the voltage carried by two transistors. T 13 and T14 controlled, and the emitter of the Tran- 4 ° The basic circuit of the oscillator is in Fig. 4 sistorsT12 is shown across a conductor 35 at the output. The uni-function transistor T17 is twofold Amplifier 2 (Fig. 1) connected. see supply lines 45 and 46 with one

The transistor Tl 1 is switched off until a right resistor R 40 is connected in series, and the emitter corner pulse via a capacitor C 13 and one of the transistor is connected to the connection of a Kondea resistor R 27 is applied to it. The capacitor 4S C16 and a resistor R 41 connected. satorC12 (the correction capacitor) is then charged. In this way, the capacitor is quickly charged to 6.8 volts. The transistor TIl resistor is charged until its voltage switched high after about 2 milliseconds, because that's enough to make the unijunction transistor T17 conductive capacitor C 13 together with the resistors when the capacitor C16 through the R 27 and R 28 has a differentiating effect. 50 Unijunction transistor is rapidly discharged after- The transistor T12 is turned on when both of the the cycle is repeated. In the shown transistors T13 and T14 are conductive, since the base circuit is the connection of the capacitor C16 current for the transistor T12 must flow through these two in and the Widei stand R 41 with the collector of a series-connected transistors. The transistor T18 connected, the base of lerverstärker through the linear portion of portion 55 from the Def transistor T14 will receive a signal via a conductor 37 of the voltage signal bd turned on, the via (see F ig. 2). In the circuit shown, the capacitor C 14 supplies the base current for the transistor base of the transistor T18 also via a Lei-T14. The transistor T13 is connected through the device 31 (see also FIG. 2) to the blocking negative square-wave pulse ag, which is connected through a transistor T10. One of the unijunction resistance R 29 applied to the base of the transistor 60 transistors begins to oscillate when the switched on. Correspondingly, the stronger error voltage goes beyond -1, and the transistor T12 switches on at b and off at g, whereby it starts to oscillate the other transistor when the capacitors charged to the amplified error voltage go beyond 4 l. How does if, however, the marking signal before the already mentioned in connection with FIG. 1, if point b occurs, the transistor 712 will not switch on these oscillations so that the controlled Halbceschaltct, and the capacitor C 12 will be conductive to a conductive rectifier and the correction I will be charged 6.8 V. The Fchlcrspannungscingang motor advances or delays the marking, is applied to an amplifier 36, the output of which.

Maintaining a continuous material web between the printed and a subsequent processing step (for example, folding or punching) can be used. It can be used for webs of material printed and cut in the same machine, or it can be used to do so align a printed web for subsequent processing. They are also suitable for multi-color printing Find use, the marking signals corresponding to the individual color components brought into agreement with the voltage signal supplied by the magnetic device will. The correction motor can work in any way to correct the misalignment to reduce.

In one arrangement, the web runs over between the last impression cylinder and the cutting knife

10

a roller, the position of which can be changed by the correction motor, whereby the web length between, Cylinder and cutting knife is reduced or enlarged and an alignment between the Printing and cutting is done. In another arrangement, the web runs in front of the Entry into the cutting device between two tightly pressed rollers, one of which is made of Steel and the other made of rubber. The steel roller is taken over by the drive shaft of the machine a differential or planetary gear differential is driven. The gearbox has three outer shafts, an input shaft driven by the drive, an output roller connected to the pull roller is also a correction wave with the help of which the path makes small feed or deceleration corrections be granted.

1 sheet of drawings

Claims (5)

... has another transistor (Γ 3) that by ratemansprucne: its normal state in the opposite 1. Device for register control, in which the status changes when the magnet from A voltage signal delivered synchronously with the web speed device drives its pole Magnetic device changes a cyclical 5 ity and that then occurs in its normal Voltage signal and returns from a state if the voltage signal sensing device drops to a sufficiently low amplitude when passing one of the amplitudes, The printed areas of the web are related - whereby the trigger circuit is in its normal direction Marking a marking signal generated state is reset. becomes and after amplification of the signals to depending on the time interval between the - ■ Voltage signal and the marking signal in a circuit arrangement a register error The invention relates to a device for regi- signal is generated that the device for the ster control, in the case of a synchronous with the Control of the web speed is fed, 15 web speed driven magnetic device thereby characterized in that the device is a cyclically occurring voltage signal and the magnetic device (1) supplied voltage from a scanning device when passing a to signal in a substantially constant part - the printed areas of the web in relation section has a «sloping deficiency. a marking signal is generated that in the case of the magnetic device luchgesthalte- ao and in the case of the amplification of the signals from th amplifier (2) with the help of an automatic depending on the time interval between the span gain control the peak value of the stepping signal and the marking signal in one running edge of the voltage signal unah- circuit arrangement generates a register error signal depending on the speed of the drive, that of the execution to regulate the track magnetic device constant l-maintained and »5 speed is supplied. that when the marker signal occurs, there are essentially two for register control Section of the sloping flank of the device known, one of which is known as the Bahn-Spanmingssignals with the help of a bistable form-rail system and the other as rail-cylinder scoring (8) whose output signal designates the system! will. With the rail-rail system Represents register error signal. 30 a marking is made by each printing unit. 2. Device according to Anspi ch I, printed thereby, recognizes / calibrates voltage pulses when scanned, that the N'jgncteinrichtung (1) testifies from whose time interval the measure for one is in sync with an attention to register compliance. With the rail · cylinder system Subsequent machining of the rotating web, the web is provided with only one marking and magnetic pole piece and one with the pole 35 is a magnetic switch piece cooperating with each pressure cylinder permanently arranged coil, which consists of a voltage pulse per cylinder. rotation generated. Here, too, the time gap is maintained Apparatus according to claim 1 or 2, characterized by a capacitor connected to the output of the pulse and the voltage pulse of the magnetic switch, a capacitor connected to the output of the pulse and the voltage pulse of the magnetic switch. In order to specify the actual register (C12), an amplifier (36), to which the error in length units, must be supplied to the capacitor voltage, and a time-time interval between the two impulses correspondent circuit (7 IS, TI6), which is sent to the The output corresponding error signal can be multiplied by the machine speed amplifier and the capacitor, since the machine speed is closed and the capacitor can vary over time,
is substantially linearly discharged. The invention is therefore based on the object 4. Apparatus according to claim 1 or 2, to design a device for register control so characterized in that the bistable switching that the register error signal in a simple manner (8) has a transistor (T 12) which is dependent on the size of the web speed can be generated by two blocking circuits (transistors Γ 13, 7'14) 5 °. is controlled, one of which (T 14) den This task is the device initially Transistor solved according to the invention only during the middle section of the type described, sloping edge of the voltage signal that the clamping force supplied by the magnetic device and the other (Tl 3) only during the beginning voltage signal in a substantially constant of the voltage signal up to the occurrence of the Mar- 55 section on a sloping edge. so that the trans- sistor from the beginning of the voltage signal to the switched amplifier with the help of an automatic Occurrence of the marking signal is conductive. Gain control of the peak value of the oblique 5. Device according to one of claims I running flank of the voltage signal independents4, characterized by a further gate (3), ^6o gig of the drive speed of the magnets, which is kept constant by a device derived from the voltage signal and that the control signal is applied when Auftetcn throughput contact of the marker signal, a portion of the helical gear, a marker signal only during the running edge of the voltage signal by means of time of the control signal allows the control of a bistable circuit whose off signal is generated in a generator set, which has a ⁶ 5 input signal, the Represents register error signal,
bistable trigger circuit (Tl, T2), which switches the voltage signal received from the magnetic device signal from the Markierungsbci beginning of the voltage signal supplied by the magnetic device (1), and the voltage signal is sampled so that the output voltage