DE2223277A1 - OFFSET PRINTING MACHINE - Google Patents

Description

Offset printing machine The invention relates to an offset printing machine, especially for office purposes, with an electromagnetically operated stepping mechanism, the one switching shaft one after the other in one of the number to be executed by the machine Functions can bring the corresponding number of angular positions, with the Switching shaft rotatably mounted switching cam and / or cam disks, the with assigned, permanently attached switching and actuating elements in the way work together that at each angular position of the selector shaft a predetermined Function is set.

There are already small-offsers printing machines intended for office purposes known (British patent specification 1 192 671; German patent application P 17 86 026.3-27), where the setting of the various functions of the machine with a single Switch rotary knob is possible, the one with control disc cam packages, switch cams or the like provided shift shaft operated. Usually the from Rotary knob operated switching shaft one after the other the following functions of the printing machine controlled: 1. Stop position: The motor is in this position turned off and the rollers in the inking unit are separated. The applicator rollers and that The dampening system is therefore in the night position.

2. Motor position: This is the night position of the application rollers and of the dampening system canceled. Furthermore, the climbing table moves into the working position. If the etching is to be carried out, the etching mechanism is also swiveled in at this position.

3. Etch position In this position, the film is chemically etched pretreated.

4. Color / fluid position: The etching mechanism is swiveled out and water and color are switched on according to the preselection.

5. Inking: The application roller swivels to the film cylinder and colors the printing film.

6. Transfer to the rubber blanket: The film cylinder swivels towards the Blanket cylinder and transfers the print image to it.

7. Printing position: The paper feed is switched on and the impression cylinder pivots against the blanket cylinder controlled by the paper feed. This position is retained until the set number of prints is reached.

8. Paper stop position: The film cylinder swivels from the blanket cylinder gone, the impression cylinder is withdrawn, the color is switched off and the paper feed interrupted.

9. Blanket cleaning position: water is switched off. application rollers pivot from the film cylinder. The washing mechanism swivels to the blanket cylinder and cleans this.

100 Stop position: blanket washing unit swivels from the blanket cylinder path.

This position again corresponds to the one mentioned in the first place. The engine is switched off and the rollers in the inking unit are separated. The cycle is now complete.

In known small offset printing machines, it is true that the sink button operation represents a significant simplification, but the effort required for the mechanical ongoing advancement quite considerably, so that the operation of such machines A not inconsiderable physical exertion, especially for female workers represents.

In the simultaneously filed patent application P entitled "Offset printing machine" (our sign S 2359), which was shown to be essential Features are hereby also made the subject of the present application a button control has already been proposed as well to facilitate operation the expansion of the functions by the positions: '' Probedruck'l and "Cleaning the Foil".

bind inexpensive electronic program control of i3office offset printing machines was missing so far because the various print media used in office practice, such as metal plates, paper foils, plastic foils, zinc oxide foils and organic Conductor foils each require special program sequences, which are also carried out by the choice of accessories (etch, jasser additives, colors, quality of the plates) will.

The aim of the invention is thus to provide an offset printing machine of the type mentioned to create, which for different print media a simple, cheap program preselection allowed, and the operating errors largely makes impossible To solve this problem, the invention provides that for each Function that can require more than one machine cycle, a coding switch is provided on which the number of machine cycles during which the function is executed is to be preset, and that the coding switches by successive, controlled by a step switch arranged on the switching shaft fixed voltage can be activated when the function assigned to them is present, so that they replace a memory, and that the digital outputs of the coding switches are connected in a multiple network to a comparator that controls the coding switch value set and pending at the output as a digital signal with a second digital signal compares that of the number of times it has been switched on Function corresponds to expired machine cycles, and to the indexing mechanism as well to the counting unit for resetting and repeated activation, a switching pulse delivers as soon as the two digital input signals are equal.

Because of this training, the number of machine cycles in the individual functions can be preselected depending on the print medium used, while the actual program sequence just by pressing a Start button is triggered and then takes place fully automatically. This represents an essential Operation simplification, because the operator before commissioning the machine can preselect the appropriate program in peace and quiet. Apart from that, offers the solution, as will be further described, also includes the option of a preset Change the program at any time, i.e. intervene in the program sequence.

The fact that the coding switch, which a rotary wheel that can be brought into different locking positions with contact track segments having sliding sensing fingers, a coding of the outputs to the input takes place according to known truth tables, a realization of the electronic Program control depending on a step switch, a comparator and a cycle-controlled counting unit at such a low price, so that use for office purposes is possible. The solution according to the invention, i.e. the group: Coding switch, step switch, comparator and cycle-controlled counting unit also the use of several decadic coding switches to that with an electronic Numeric display connected via the counting unit so that it can be used as a repetition counter can be used for one print run.

The decade switches used to preselect the print run preferably have (generally yier pieces) four outputs each, with each of the digits 1 to 10 corresponds to a predetermined binary signal with four digits, the remaining coding switches have five outputs for an input to which the zero or 1 is applied, so that a total of 32 different binary combinations are possible. Of these will be practically only 16 used, whereby the preselection scla ter from 1 to 11 in liner steps and from 11 to 19 in two steps is divided, whereby the Possibilities for variation without renouncing a relatively fine line position are essential increase.

The comparator used in the present invention is corresponding to the number the decade is designed for the edition preselection switch, so preferably has also for four decades.

A preferred embodiment provides that the tap changer a movable contact which lies on a pole of a low voltage source, and has a plurality of fixed contacts each assigned to a function, and that the Voltage inputs of the coding switches to the functionally assigned to them Fixed contacts are connected so that they are in the appropriate position of the tap changer connected to voltage and to carry out the comparison in the comparator are activated. The step switch is a very simple measure for this successively e: cfollowing activation of the coding switch, so that on Memory can be dispensed with.

Another embodiment is designed so that the fixed Contacts also to one pole of an indicator lamp for the assigned function whose other pole is connected to the other pole of the voltage source. In this embodiment, the tap changer is also included in the delivery a display is used in which function the printing press is currently working. This is especially important when the machine is turning off the electronics is operated in key control or the operator in the electronic sequence want to go down.

Another embodiment is characterized in that the output signal of the comparator via a line directly to the one that triggers the stepping mechanism Relay is applied and this when there is a tie between the input signals and the excitation current applied.

So it is from the comparator to the relay, the sequencer, the step switch and the coding switch form a closed circuit, whereby the other input of the comparator with a digital signal from a cycle-controlled Counting unit is acted upon, expediently, the fixed contacts that the Funlftions of color / fluid and paper stop are assigned without interposition a coding switch connected to one comparison input of the comparator in such a way that that the value 1 is transmitted to the comparator, so that after switching on the Function an immediate forwarding takes place0, however, is for the functions Cloth, dyeing, rubber cloth, printing, cleaning and washing unit each have a coding switch intended. Here, the execution is expediently such that the etch, pressure and the cleaning coding switch have a zero position and the remaining coding switches start at 1, in the zero position, without the relevant function switched on is, the comparator is supplied with the digital signal 1 and thus an immediate forwarding is effected in the next function.

It is expedient to feed the program electronics to the low voltage source A stabilization circuit is connected to ensure safe functioning of all electronic Ensure components.

The etch area code or non-area code is expediently thereby enables the etch coding switch to be used if the position of the etch selector switch differs from O a 0 signal and a 1 signal at the zero position at one input of a first There is an inhibitor whose other input receives a signal from a line, those about one Changeover switch of an electronics button in electronics mode is connected to the other pole of the voltage source, with the u value 1 at the output of the inhibition element appears if and only if that from the etch coding switch signal 0 coming to the link, which is signal 1 coming from the line. The exit of the inhibition member is advantageously connected to one terminal in the case the excitation the swiveling of the engraving mechanism causing the Etchwerk actuating electromagnet the other connection via a closing contact of the stepping unit upstream relay is applied to the fixed contact of the stop position of the tap changer, thereby is the connection of the electromagnet with one of the relay contacts Pole of the voltage source preferably also via one of a curve of the switching shaft actuated hold switch connectable when switching from the stop to the motor switch-on position closes before the first relay drops out and again at the next switching step opens. This ensures that the electromagnet for the Etchwerk if necessary remains pulled during the entire time that the engine switch-on position is present, It is also expediently provided that the etching mechanism is coupled to a switch is that closes when the Etchwerkes dinschwenken and thus an indicator lamp puts on tension. In this way, the: t3serving party is also shown when the service has been called will. The switch coupled to the etching mechanism is also advantageously located here with the hold switch in series.

In a further embodiment, the electromagnet is apart a preselection switch is connected to the inhibition element, and to the other contact of the switch is connected. This is when switching off the Electronics enables calibration to be preselected.

Between one pole of the voltage source and the one on the inhibitor The lying connection of the electromagnet is expediently an etch preselection indicator lamp switched, which displays the relevant switching status to the operator, Another preferred embodiment provides for the purpose of generating a machine cycle signal before that one is briefly actuated once with each revolution of the foil cylinder, depending on Cycle contact that can be activated by the switching shaft position is provided, which is in the activated state supplies voltage pulses via a trigger to a counting unit, which adds the incoming machine cycle signals and a digital sum signal to the comparator for comparison with the set value of the one that has just been activated Coding switch or the direct connection that has just been activated. Activation of the cycle contact is preferably carried out in that the cycle contact via a Cam contact of the switching shaft, which except in the stop, probedbuck, pressure and Paper stop position is always closed with one pole of the voltage source is connected so that it is activated except for the aforementioned positions 0 According to a further preferred embodiment, in which a Test print position is provided with the paper feed while the machine is running parked, film cylinder and blanket cylinder separated from each other and the ink supply to the film cylinder is switched off and the pre-sewn functions by pressing the single sheet key can be switched on for a machine cycle, is the test print position a fixed contact of the Step switch assigned and a test print preselection switch vorceesehenX one connection to the one iL and the other connection via a test pressure relay and the changeover switch are placed on the other pole of the voltage source is. The relay expediently has a make contact for actuation a test print preselection lamp to alert the operator to the choice made close. Appropriately, the relay has a changeover contact, its Switching arm on the fixed contact of the tap changer assigned to the test print position whose contact is connected to the switching arm when the relay is not energized in the test print position via a multiple composite line a 1 to that one The input of the comparator is connected to the coding switch and its when the relay is energized, contact is connected to the switching arm to the same connection of the relay leads like the preselection switch, so that the relay moves up to the next of the tap changer itself. The training is expediently such that that the first-mentioned contact is also applied to the cycle contact3 so that at open test print preselection switch in the case of the test print position of the multiple switch a 1 to one input and a further 1 to the other via the cycle contact Input of the comparator is given so that a switching signal appears on the relay. This ensures that the switching signal is activated when the preselection switch is activated omitted and the machine remains in the relevant position until the operator release the continuation by pressing the start button again.

A step table switch is preferably parallel to the bob pressure preselection switch switched, which is only open when the riser table is in the Zufillirposition is located.

In this way, the machine is also in the test print position held, if the access table is not in working position or if there is no copy paper, to the The counting unit is expediently one that indicates the number of incoming pulses Unit connected to show the operator in particular how many sheets have already been printed. The counting unit is used to count the cycles for all Functions used and deleted again and again after the expiry. This is an essential one Feature of the invention The comparator expediently leads to the deletion a feedback line to the input of the counter via which when the If there is a tie, a clear signal is given to the counting unit.

As already mentioned, there is an edition preselection code switch expediently from several decade switches with electronic numeric display are connected via the counting unit, so that they can be used as Xepetitionszäh'er for a print run are usable. This is particularly advantageous because it is used in offset printing machines often the same editions have to be reproduced from several originals. In this respect, a repetition counter is for the use of electronically controlled office machines especially preferable.

Another, particularly preferred embodiment is characterized in that a cleaning position is provided after the paper stop position, to which a fixed contact of the tap changer is assigned and to which the switching shaft while the machine is running, the cylinders of the machine are extended, the Application rollers are lifted off and the water and ink supply are switched off and at the by Pressing the single sheet button closes the cylinder and the paper feed is switched on, but without the application roller is applied and water and the ink supply are switched on. It is preferred for the cleaning position a Godier switch consisting of preselection switch and uSert memory is provided, which has a zero position in which there is a direct multiple connection shown in FIG from the fixed contact to the input of the comparator and a signal 1 to the first input of a second inhibition member is given, the second input is on the line and the pre-selected a finite whole number on the set Value corresponding digital signal to the input of the comparator and the signal 0 to the one input of the inhibition member. The output of the inhibitor, which emits a signal 1 if and only if the signal O and the signal 1 is present at the second input, is advantageously to the one terminal of a single sheet key actuating electromagnet applied, the other terminal of which to the fixed contact of the tap changer assigned to the cleaning position is. In this way the film can be cleaned automatically.

In order to offer the operator a further possibility of monitoring, are, according to a further embodiment, between the outputs of the inhibition members and one pole of the voltage source indicator lamps for the "Etch" or "Clean" placed.

The etch and cleaning coding switches are used to control the an ingans of the inhibition members in the zero position also to the line connected, which leads to the other input of the inhibition member. This execution is very easy to implement and therefore contributes to the economical production of the printing machine according to the invention.

Another preferred embodiment is designed so that the fixed contacts of the printing position and, if necessary, the cleaning position One diode each with a first switch that - briefly - when each sheet of paper leaves closes and in the closed state the connection to a first input of a provided in the comparator monitoring unit and with a second Switches are connected to the exit of each sheet of paper from the machine short-circuited and in closed: state the connection to a second input the monitoring unit provided in the comparator, in which the two to be triggered by one and the same sheet of paper in a certain time sequence Both inputs are constantly monitored for presence, the monitoring unit if one or both signals are missing, a switch signal is sent via the comparator to the stepping mechanism upstream relay. The invention thus creates for the first time a system that automatically checks whether a front entry is made Paper also reappears at the exit of the machine.

Every malfunction in the paper transport leads to a further indexing the machine to the paper stop position.

The second switch is expediently a light barrier switch, whose light beam is cut by the emerging sheet of paper.

Another embodiment provides that the second input of the Surveillance control via a cam contact, which is controlled by cams on the control shaft is only closed in the pressure position, but is otherwise open, to the trigger is created. In this way, it is ensured in an advantageous manner that the counting pulses for the counting unit are not from the machine cycle, but from triggered by the paper actually being conveyed0 This means that a particularly reliable Display on the meter guaranteed.

According to a further embodiment, the AuflagevorwSll coding switch sets when it is set to zero, voltage is applied to an indicator lamp via a line, so that the operator immediately recognizes when the edition has not yet been preselected.

Appropriately, this lamp is in the form of a warning lamp in the immediate vicinity Arranged near the edition preselection switch.

The invention also provides that the line via a possibly voltage passing diode is applied to the relay, so that this is excited.

In this way, the machine can advantageously be switched on from the test printing position to the printing position also avoided when the edition has not been selected. It should be noted, however, that the operator even if the preselection switch is not set using the control button can get into the print position, e.g. without preselecting a specific edition to print any specific quantity of paper.

A changeover switch for electronic key control is expediently provided, which apart from the first toggle switch separates the machine cycle contact from the trigger Has contact and another switch. The first switch controls expediently an electronics indicator light also comes on. He can also use the test pressure relay and switch off the inhibition elements in the button control position from voltage, whereby the preselection functions are canceled.

It is particularly preferred if the first switch for key control an etch preselection individual switch applies voltage, which is also connected to the etch mechanism actuating electromagnet connected is. The etch preselection can thus also be carried out with key control.

Another preferred embodiment is characterized in that that in addition to the start button which actuates the series relay, there is also a stepping mechanism A backward switching return button is provided via a reverse relay, which by the second switch in the case of key control, possibly with interposition of safety contacts is connected directly to one pole of the voltage source, while with electronic control the changeover switch controls the voltage via a cam contact, which is only closed in the paper stop position w to the return button and over another cam account, which is only available for the positions' test print, print, paper stop, Stop is closed, attaches to the start button, with the button-side connections the cam lock cycles through the flow of current from the return button to the start button preventive diode are connected. In this way, both on the upstream as well as on the downshift with those provided according to the invention Positions can be influenced0 To be particularly clear - and yet Maintaining a space-saving arrangement of the various switches and lamps is one thing further preferred embodiment; formed so that the display panel is vertical one above the other has the preselection switches in the sequence of the functions and that next to it at the same height the indicator lamps for the assigned function are arranged. For each function not assigned to any preselection switch is preferred between Preselection switches left one place and one next to it appropriate lamp arranged, the utility value is further increased, that between the preselection switches having a zero position and the respective Function indicator lamp Preselection indicator lamps are arranged.

The electronics button is advantageously located next to the indicator light field formed over its entire height extending elongated key. Particularly beneficial it is when the button is translucent and the electronics lamp is located under it is.

Below or above the indicator lamp field are expediently side by side the display unit and the edition preselection switch arranged.

Furthermore, is preferably between the display unit and the Preselection switch designed in particular as an arrow directed at the preselection switch Edition pre-warning lamp arranged.

The invention is also suitable for combination with one or more features of the simultaneously filed patent applications P ................. and P ............... with the title "Offset-Druckmaschine" (our characters S 235d, 5 2359) provided. The disclosure content of these applications is hereby also included in the subject matter of the present Registration made.

The invention thus makes it possible to have a specific sequence in the program sequence to be observed again and again. For this purpose, a step switch or a stepping mechanism used in connection with the main control shaft stands. After the preselected program sequence, the control electronics give impulses to a ratchet mechanism or a clutch for actuating the main selector shaft, which is provided with control cams In addition, the electronics give impulses for switching special units (Etchwerk, Single sheet key), while in the event of operating or machine errors, the corresponding Circuits to avoid malfunctions are carried out. Sin more, more essential The advantage is the possibility of correcting the preselected electronic sequence0 It is therefore provided in particular to switch off the electronics at any time in order to to remain in the activated function or to switch to key control.

After any necessary correction, the operator can then switch the electronics back on. The circuit according to the invention can therefore a simple correction of electronic program sequences, errors made by the operator can possibly do, are - as already mentioned - reported by the machine or prevented. For this reason, the electronics are notified when the operator forgot to put paper on, or if she has not preselected the number of copies. In such a situation the electronics interrupt the program sequence sensibly, so that the operator has the opportunity to correct this error. b "in signal function monitoring also reports to the machine when the paper has been printed. The machine must now automatically be switched to a waiting position by the electronics that makes it possible for the operator to add paper without having to print the original suffers or the blanket is over-colored0 The electronics also prevent that the agent makes mistakes with the help of the operating key, i.e. e.g.

that it switches to the print position before it runs out of paper has created.

On the other hand, the circuit according to the invention gives the operator also release the control button if it makes sense0 In this way, the electronics corrected or an electronic printing program according to a decision be modified. Perhaps the bridge should not end or it should end appears important for other reasons to repeat certain functions (e.g. the transfer of the image to the rubber blanket).

The electronics are used in an offset printing machine according to the invention influenced by the machine cycles, in this way it is possible to se the program work cycles to select.

"The electronic control is complete with a light display device, which visually shows the user in which function the machine is currently working. This makes it possible for him to intervene in the program flow.

In addition, the light indicator notifies him when the machine is in a Is on hold to give him the opportunity to call up test prints, Correct an operator error or add paper. Certain preset functions, which do not have to be selected for all print programs, such as the "Etch position", the "test print position" and the position "cleaning the foil" are used in the preselection by a special signal light in the amount of the corresponding functions in the light field display the line circuit. Through the light field in connection with the preselection switches the operator does not need to learn or retain anything. A look at the Display device is sufficient and it is aware of what the machine will do, what she's doing and what she's going to do.

The invention is illustrated below, for example, with reference to the drawing described; in this shows: Fig. 1 is a schematic end view of the offset printing machine according to the invention preferably used stepping mechanism, 2a and 2b a detailed circuit diagram of the offset printing machine according to the invention, Figures 2a and 2b are to be placed next to one another on the dash-dotted line, thus form a unit, and-Fig. 3 is a schematic view of the in the erfindungs.gemäße Offset printing press preferably used display and preselection board.

According to Fig. 1 are on the shift shaft 11 of the offset printing machine except the film cylinder curve (not shown), paper feed curve, washing unit curve, Step switch and various others can be found in the following functional description resulting cams and switching cams, two ratchet wheels 13, 19 attached in a rotationally fixed manner, wherein in the right half of Fig. 1, the one for the reverse rotation of the shift shaft serving ratchet wheel 19 and in the left half that further behind it, for Forward rotation of the shift shaft le 11 certain ratchet wheel 13 is shown, Di.e ratchet wheels work with ratchets 14, 20 together, which are on a common Axis 22 sit, which are linked by a linkage 23 articulated at 24 via a plunger 25 to a periodic up and down movement in the rhythm of the cylinder rotation is driven The pawls 14, 20- are pivotally mounted on the axis 22 and are pivoted outwards by the torsion spring 120 until they come into contact with rollers 26, 27, the lever 60, 61 of electromagnets MV, MZ on the Ratchet wheels 13, 19 can be pivoted to. The return movement to the starting position takes place by the torsion spring 120 after the Üiagnete the rollers 26 ,. 27 in their starting position have withdrawn.

The direction of movement of the axis 22 and the pawls 14, 20 is through indicated by a double arrow f.

In addition, a cam wheel 16 driven by a further cam wheel 16 is shown in FIG Release switch 15 indicated. The cam wheel 16 is only partially indicated by a dashed line Line indicated, according to Fig. 2, the ratchets 14, 20 actuating electromagnets MV, MZ excited by closing two relay contacts V2, R2, which lead to two relays V, P belong.

The circuit according to FIG. 2 is via a main switch 57, a fuse 53, a transformer 55 and a rectifier bridge 56 with direct voltage from z, B, 24 V supplied.

An electrolytic capacitor 62 is used to smooth the DC voltage.

The drive motor 52 is connected to the main switch via speed electronics 63 57 connected. A shunt winding is shown at 64. The speed regulation takes place by means of a level resistor 51.

The triggering of one switching step for load control and one Working cycle be-i electronic control is carried out by the operator an operating button 12, the relay V with power via a first pulse stage 17 provided.

The pulse stage 17 provides for an extension or limitation, i.e. defined length of the current impulse delivered by pressing button 12, see above that the relay is energized for so long WqirdS until it is by means of the self-holding contact V1 can hold even in the tightened state.

It is now assumed that the switch 109 is not shown right position, so the machine runs with key control.

The excitation of the relay V by pressing the button 12 causes as I said the closure of the Pelaisontaktes V2 and thus an attraction of the electromagnet MV. As a result, the ratchet wheel 13 switches on the next stroke of the machine by one Step further into the next machine function.

The relay V drops out again as soon as the release switch 15 (Fig. 1 and 2) opens and thus the self-holding circuit is interrupted. The cam wheel 16 is now designed so that the release switch 15 opens as soon as the pawl 14 with the ratchet wheel 13 has safely come into engagement.

Regardless of the time during which the operator pressed the key 12 presses, is a safe further switching of the stepping mechanism by one Position brought about.

Downshifting is done completely analogously to the upstream switching using the Return button 18, which has a second pulse level for extending or limiting, i.e. for a defined length of the switching pulse the second relay R is activated. The second relay R has a self-holding contact R1 and also controls the Closing contact R2, via which the reset magnet MZ is supplied with power. Even the release of the relay R is initiated by the release switch 15, so that the Curve des'Nockenrades 16 must be designed symmetrically so that they can be in both switching directions produces the same effects.

The one shown schematically in FIG. 2 is also seated on the shift shaft 11 Step switch 2, which has a rotating contact with the switching shaft 11 29 and a number of fixed contacts 30a to 30k. The moving contact 29 is with one pole 89 (-) of the voltage source described in detail above 31 connected, while the fixed contacts 30a to 30k via indicator lamps (35a to 35k) and via a fuse 54 to the other pole 90 (+) of the DC voltage source 31 related. The arrangement of the indicator lamps 35a to 35k on the display panel the printing press according to the invention is illustrated in FIG.

Since the stepping mechanism, in addition to the various cam disks, Cam packages and switching cams the step switch 28 moves step by step, the various light fields 35a to 35k are lit up one after the other, whereby the operator is shown what function the machine is currently doing executes.

In addition to the "motor" functions also carried out by known machines, "Etch", "Color / Fluid", "Inking", "Blanket", "Print", "Paper Stop", "Washer" and "Stop" are two further switch positions "Probedruck" 35e and according to the invention "Cleaning" 35i provided. The film cylinder swivels in the test print position away from the blanket cylinder and the ink is switched off. Only when the operator calls up a test print with the help of the single sheet key, these functions are switched on again for a short time. The test print also has one more Safety function, which are explained in the further course of this description will.

In the cleaning position 35i provided according to the invention, the Application rollers, the water, the paint, the film cylinder, the Paper feed, the washing unit and the etching unit are switched off, but the riser table is on switched on.

With the help of the single sheet button, paper can be used to "clean the film." are fed.

Furthermore, on the control panel between the positions towards "Motor" 35b and "color / fluid" 35c, an indicator lamp 36 'tEtch "is provided, next to which In addition, another lance 37 is located, which has the area code to be described below of calibration. In this context it should be noted that the Etchen is only required for certain types of film, for swiveling in the etching unit a further ME magnet is provided, which has a further closing contact V3 of the relay V and the fixed contact 30a of the stop position as well as the movable Arm 59 of the tap changer 28 to one pole of the low voltage source 31 and Via a preselection switch 32 effective for key control to the other pole of the Voltage source 31 can be placed.

This circuit ensures that the etching only occurs at the exit from the stop position a and when the preselection switch 32 is actuated.

So that the etching continues even after the relay V has dropped out is the terminal of the electromagnet ME at the contact V3 also via a holding switch 33 and an etching switch 34 to the one Pole of voltage source 31 applied. During the Etchwerkschalt he 34 when pivoting of the etching mechanism is closed, the hold switch 33 closes due to actuation a suitably arranged cam of the switching shaft after the relay V has picked up Has. The switch 33 opens again after the etching has ended, whereupon the etching mechanism is swiveled out again, since now the electromagnet ME currentless is. This happens normally when switching to the color / fluid position 0 only acted upon by the control button 12 pulse stage 17, but not with the <ückholtaste 18 interconnected pulse stage 21 is also about the Line 81, the comparator 79 and the function monitoring 102 to the fixed contact 30g of the tap changer 2d applied. The comparator 79 outputs a signal after the preset support is achieved while the function monitoring 102 is on Emits a signal as soon as the paper supply on the access table is used up. Both Signals put the pulse stage 17 to voltage, so that through the relay R and move the magnet MV one step further to the "paper stop" position is switched. In the cases mentioned, it takes place on the basis of the invention Circuit an automatic "paper stop" and a separation of the cylinders as well Switching off the color.

uilie has already been mentioned above, before the printing position g is according to the invention the test printing position f switched, in which the film cylinder from the blanket cylinder swiveled away and the color is switched off. This proof is coming not only the function to, by pressing the single sheet key individual test prints and then, if necessary, a register correction or a correction make the water or iarbzuführ, but it is used in connection with the switches 41, 42 also to switch the machine to the print position to prevent certain irregularities.

The live pole of the control button 12 is shown in FIG. 2 Supplied with voltage via a changeover switch 41, which is arranged on the climbing table and assumes the position shown if there is still enough paper on the platform is present and it is at the right height for proper functioning in the pressure position assumes. The microswitch 41 switches to the other position around if there is no more paper on the board or if it is not in the Feed position. In this other position is between the control button 12 and the changeover switch 41, another microswitch 42 is switched, which is controlled by a suitable cam on the switching shaft 11 is controlled so that it normally closed, but in the position introduced according to the invention '1Probedruck "f is open. If the switch 41 is in the position not shown in FIG switched and the microswitch 42 is open at the same time, can be activated by pressing the operating button 12 has not been switched to the print position g will. The desired safety effect is thus achieved. The operator can now turn off the irregularity, whereupon the microswitch 41 again in switches back to the position shown and operation can be continued.

An analog circuit is provided on the return button 18. Of the Changeover switch 44 is controlled in a corresponding manner by the climbing table as the changeover switch 41.

The opening switch 45 provided in one branch is, however controlled by another cam on the control shaft 11 so that he normally is closed and only opened in the "paper stop" position h. In this way a switch back from the position h to the printing position g by means of the return button 16 prevents when the switch 44 on the climbing table signals an irregularity.

The lamp 37, which indicates the preselection of the etch step, 89 is between one pole / of the voltage source 31 and that applied to the preselection switch 32 Connection of the electromagnet ME switched so that it lights up as soon as the preselection switch 32 is closed The inventive creeper gear switch 46 is through a cam on the selector shaft in the stop position a and in the motor position b is closed and is open during the other switching positions. In this way the engine is only in standby in the two aforementioned operating positions for the triggering of the crawler gear by a slide switch 46, that of IIand from a contact-free middle position to a left position, for left-hand rotation the crawler gear and in a right position for the clockwise rotation of the crawler gear can be brought.

If the slide switch 46 is made contactless from the one shown in FIG If the middle position is brought into one of the two switching positions, then in any case the relay A is energized, once directly and on the other hand via the foil cylinder contact 49 and the diode 47. The contact A1 then switches on the motor electronics 63, see above that the motor 52 is running in creep speed, provided that the switch 46 is closed.

If the slide switch 4 @ according to Fig. 2 is brought to the upper position, in addition to relay A, relay 3, its contacts 31 and B2 reverse the polarity of the DC voltage at motor 52 so that the direction of rotation of the motor is reversed will.

The film cylinder contact 49 ö opens at a predetermined position of the film cylinder of the printing machine, preferably in the clamping position. The operator can therefore simply slide switch 48 in an advantageous manner Press until the crawler gear is switched off due to the opening of contact 49 will.

According to the invention, the slide switch 48 also has one Override contact 50, which it by moving the slide switch even more vleiteres 48 enables the film cylinder contact 49 to be bridged. That way you can the operator, if necessary, also uses the clamping position to move the film cylinder twist out.

A cam contact 59 is also of great importance, which is also is actuated by a cam on the selector shaft 'The contact 59 is located normally in the lower switching position, not shown in FIG. 2, in which he constantly applies voltage to one terminal of relay A. In this case- So the contacts V4 and iR4 of the relays V, R work blind only in the stop position a switches the contact 59 into the upper position shown in FIG. 2 and activated as a result, the slide switch 48 determined by switching on the crawler gear.

the second is, according to the invention, a special non-stop switch 5t, upstream, which when actuated does not simply remove the voltage from relay A and with it the emergency he switches off 52, but also the creeper gear activated with the slide switch 48. The non-stop switch 58 is in parallel with one to the creeper switch 46 lying switch 65 mechanically coupled such that the switch 65 closes automatically when the emergency stop switch 8 is actuated. This advantageously provides the possibility of, after a non-stop, the To continue operating the machine in crawl to the left or right.

The diodes D connected in parallel to the relays in the reverse direction are used of induction suppression.

The key control described above is given when the Electron S illustrated below in Fig. 2a; key 87 in the drawing is not shown right position, in which the switch 86 with the Etch preselection switch 32 is connected and the buttons 12, 18 via the switch 109 at one pole of the Spairnungsquelle 31 lie.

The switching of the electronics button 87 in the one shown in the drawing Position now enables a fully automatic printing operation after corresponding Preselection of the individual functions.

According to FIGS. 2 and 3, preselection switches 40, 66, 67, 68, 69, 70 coding switches with value memory for the "print" "etch" functions, nInking "," Blanket "," Cleaning "," Washing unit "provided, the number of digital machine cycles to be selected during which the function is switched on should, depends on the requirements. The preselection switch for the print run includes advantageously four decimal places, while the remaining preselection switches expediently contain up to 16 optional positions. However, you can also use this for this if necessary, several decade switches can be provided.

Each of the coding switches has one of the preselected at its output Corresponding coding to be pending.

The inputs of the coding switches correspond to those of the relevant function associated contact of the tap changer 28 connected so that at a time of the step switch 28 only one of the coding switches is activated.

Overall, the fixed contacts of the tap changer 28 are as follows except connected to indicator lights 35a to 35k: 30b with coding switch 66 30c in a multiple network corresponding to FIG. 1 directly with the output line 114 the coding switch 30d with the coding switch 67 30e with the coding switch 68 30g with coding switch 40 30 in a multiple system corresponding to FIG directly with the output line 114 3Qi with the coding switch 69 30k with the coding switch 70.

In the upper right corner of Fig. 2b is a machine cycle contact 77, which short-circuits once with each revolution of the film cylinder and via the isolating button 108 connected to 1 of the electronics button 87 in the case of electronic control supplies a voltage pulse to a trigger 80 to which a counting unit is attached 78 connects. The counting unit is provided with a display unit also shown in FIG. 3 94 connected, which counts the voltage pulses arriving at the trigger 80 and in the Position "pressure" brings the operator to the display.

The counting unit 78 is followed by a comparator 79, one of which Input a corresponding to the sum of the pulses counted by the counting unit 78 receives digital signal, while the other input is connected to the outputs of the coding switch and multiple interconnection connected to the above-mentioned contacts 3Qc 30h 114 is connected, i.e. receives a digital signal which is suitable for the in the the code switch that has just been activated or the value 1 is representative.

As soon as there is a tie between the two input signals of the comparator is achieved, in other words, when the counting unit 78 den in has reached the preset value of the activated coding switch, the comparator delivers 79 a switching signal to the relay V via the line 81, so that via the electromagnet MV the indexing mechanism and thus the shift shaft moved one step further will.

There is also a voltage stabilization 83 in the power supply unit of the circuit provided, which is used to supply the electronic components of the circuit.

With electronic control, the label key 32 is activated by flipping the switch 86 in the position shown inactive Semacht. At the same time, however, is over the line 85 an inhibition member 84 activated via its one input b.

The other input a is from the etch coding switch 66 via a line 115 fed. If the etch selection switch is set to 0, input a of the element receives 84 the signal 1 and at the output the signal 0. As soon as the preselection switch 66 is set to a value other than 0, input a appears of the inhibition element 84 daa signal 0. Only in this case is the output of the Member 84 from the signal 1 to the Etchwerk actuating electromagnet ME, so that this is connected to voltage in a similar way to one terminal as above the label key 32 pressed during key control.

As soon as the relay contact V3 closes and the etch coding switch 66 is activated via the step switch contact 30b is, the electromagnet ME attracts and swivels in the etching mechanism. It will now as many etch cycles carried out as set on the preselection switch 66, because only after a tie between the preset value and the sum of the in the counting unit 78 counted machine pulses from the comparator 79 via the line 81 a pulse is issued to advance the stepping mechanism.

So compared to the button control, the electronic control has the advantage that not only the etching process as such, but also the Number of etch cycles can be preselected.

The test pressure switch is of major importance for the invention 88 to, with its left connection in Fig. 2a to one pole 89 of the voltage source 31 'and the other connection is connected to a test pressure relay P. Of the The other connection of the relay P leads via the line 85 to the other pole 90 of the voltage source 31, so that the relay P when closing the sample pressure switch 88, which is also is arranged on the control panel of Fig. 3, is energized.

The test pressure relay has a make contact P1 af, which also on the display panel mounted preselection lamp "Probedruckl" controls and this lights up as soon as the relay P has picked up.

Furthermore, the relay P has a changeover contact P2, which in the rest position the fixed contact 30f of the assigned to the test printing position Step switch 28 with the machine cycle contact 77 connects t so that the latter can deliver a voltage pulse to the trigger 80 in the test print position. So that in this case the indexing mechanism switches to the print position, is the line leading from the contact P2 via its connection 92 to the cycle contact 77 117 also via a line 106 to the output line 114 of the coding switch connected, so that also at the input of the comparator coming from the line 114 79 a digital signal representative of 1 is present. Because of the tie With both inputs from the beginning, the machine only pauses during one cycle in the test print position and then switches immediately to the print position Further.

If the test pressure relay P has now picked up, the switching arm switches of contact P2 to contact 93, which connects the lower terminal of the relay P over the fixed contact 30f and the switching arm 29 to one pole 89 of the voltage source 31 applies, so that the relay P goes into latching mode.

The preselection switch o8 remains closed.

Since the connection 92 is no longer connected to voltage, the Machine cycle contact 77 no longer voltage, if one is arranged on the switching shaft Cam contact 105 is open. According to the invention, the contact 105 is at the stop Test print, print and paper stop positions open. The machine remains in the test print.

According to the invention is between the comparator 79 and the line between Trigger 80 and counting unit 78 a feedback line 95 is provided, which the tie signals and then resets the counting unit.

According to the invention, there is also an inhibition element on the coding switch 69 96 applied, which works analogously to the inhibition element 84 and at the output emits a 1-signal, if the signal O (corresponds to a value deviating from 0) at input a Position of the cleaning preselection switch 69) and signal 1 is present at input b. The output of the member 96 is applied to an electromagnet MR, the other Connection to contact 30i of the tap changer 28 is applied.

The electromagnet for actuates the single sheet button. Depending on the value preselected at switch 69 is the single sheet key above the magnet IAR at position 30i of the step switch over one or more Machine cycles actuated.

If the preselection switch 69 is set to zero, the inhibitor is 96 no signal and the switch to the washing unit position takes place immediately.

There is also an indicator lamp at the output of the inhibition element 96 97 connected, which shows the operator the preselection of the cleaning position.

A circuit is particularly important for the function of the machine, which allows the proper paper transport through the machine at all times monitor. For this purpose, the pressure position g and the cleaning position i corresponding fixed contacts of the tap changer lines 118 or 119 branched off, which lead to diodes 98, 99, which one from pole 90 to pole 89 of the voltage source 31 Let flowing current through. The connections facing away from the step switch 28 of the diodes 98, 99 are each connected to two switches 100, 101, of which the switch 100 is arranged on the riser table and upon delivery of each sheet of paper short-circuits while the switch 101 is controlled by a light barrier at the exit of the machine is always short-circuited when a sheet of paper leaves the machine.

The switches 100, 101 are connected to the inputs 103, 104 and one on the comparator 79 provided monitoring unit 102 is applied. The circuit of the monitoring unit 102 is such that, if the two signals appearing at the inputs 103, 104 do not arrive in the predetermined order, the comparator 79 on the line 81 sends a signal to relay V and thus the step switch to the next Position (waiting position) advances from the top connection of the light barrier switch 101 leads a line via a cam contact 82 to a further input of the Triggers 80. Contact 82 is also controlled by a cam on actuated by the selector shaft and is only closed in the pressure position. There on the other hand, the cam contact 105 is open at the printing position, the counting unit becomes So controlled when printing by the sheets of paper leaving the machine, so that instead of the machine cycles, the actually printed paper is counted.

Another essential feature of the invention is the switch 38, which is arranged on the riser table and is open as long as the riser table is is in the feed position. If this is not the case, however, the closes Switch 38 automatically. Since it is connected in parallel to the sample print preselection switch 88 closing it has the same effect as closing the sample print preselection switch 88. In other words, in the event that the riser table is not in the feed position is located, the machine automatically switches over to the test print position addition prevented. The same result is achieved if the edition preselection switch 40 is in the zero position. In this case, a line 106 and a diode 107 also supplied an exciting current to the sample print relay P. The operator is encouraged in this way, the edition selection in a to bring a position deviating from 0, or by pressing the control button to go consciously to permanent pressure without setting the counter. To line 106 the warning lamp 110 is also connected, which according to FIG. 3 in the immediate vicinity of the edition preselection switch 40 is arranged to illuminate the operator to draw attention to the fact that the switch is still at zero. The diode 107 serves to decouple the lamp 110 from the sample print preselection switch 88.

A lamp 111 is also connected to line -85, which, according to FIG. 3, are combined with the transparent electronics key 87 is. The lamp 111 lights up when the electronics key 87 is in the position shown Electronics position is.

The electronics load 87 also has a changeover switch 109, which in the position shown the pole 89 of the voltage source 31 with two cam contacts 112, 113 connects which are connected to the changeover contacts 44 and 41, respectively.

A diode 43 is provided between these connection points, which the decoupling of the operating button 12 to the return button 18 is used. According to the invention the stud contact 112 closes only in the "paper stop" position, so that with electronic control only in this case an actuation of the return key influences the stepping mechanism Has.

The cam contact 113, on the other hand, closes in the "test pressure" positions, "Print", "Paper-Stop" and "Stop" and can use the step-by-step switch in these positions influence.

In the position of the switch 109 on the right in FIG. 2a, that of the key control corresponds, the switch 109 short-circuits the cam contacts 112, 113; through this the key control is released for the entire program sequence.

The operating mode of the offset printing machine described above is as follows: After closing the main switch 57, the fuse 1 and the transformer 55 supplies a DC voltage of 24 V to the rectifier bridge 56 applied, which in the above description for the sake of simplicity as a voltage source 31 is designated. The main switch also supplies power 5 the speed electronics 63 with the mains voltage. The program electronics are supplied with power via the stabilization 83, which contains a power transistor and a zener diode, A stabilized voltage generated The speed electronics 63 converts the supply voltage into a DC voltage which can be regulated by the potentiometer 51 for the emergency power supply around. The "Stop" lamp 35a now lights up. The electronics and automatics is switched on by means of the electronics button 87. The lamp 111 lights up.

It is further assumed that by means of the preselection switch 88 the Function position "test print" is selected. The test print preselection lamp is now also lit. 91 on.

The sample print preselection lamp 91 would also illuminate when the Climbing table switch 38 would be closed or the support preselection switch 40 would open Would be zero. The test print preselection relay would also work accordingly in these cases P must be attracted.

If a value is preset on the cleaning preselection switch 69, the preselection lamp 97 for the cleaning position lights up. The Single sheet actuation solenoid IVIR activated.

Correspondingly, if one or more etch cycles are selected on the switch 66 brought the preselection lamp 37 for the etching to light up and the etching actuating magnet ME ak activated.

In the "Stop" and "Etchen" function positions, the Shift shaft actuated contact 46, the Drehzillelektronik 63 on "Creeper" switched. By moving the slide switch to the right or left 48 the desired rotation of the film cylinder can now be triggered in crawl speed. If the slide switch 48 is switched to the upper position in FIG. 2b, it remains the film cylinder are automatically in the clamping position, because in this the Foil cylinder contact 49 opens.

After clamping the printing film, the machine is now ready for use and the program created by the above-described settings on the preselection switches is determined can be triggered by pressing the control button 12.

The pulse stages 17, 21 are also designed according to the invention so that that even with continuous pressure they only have a single control pulse of such length issue that the connected relays V or R are safely self-locking pass over. In this way, the relays are reliably tightened regardless of the length or shortness of the button pressure guaranteed.

Depressing the control button 12 therefore leads to the Relay V energized and goes into latching mode. At the same time, the Etchwerk actuation relay NE; excited because it was assumed that the etch function was selected. The Etchwerk is swiveled in and the Etchwerk actuating magnet ME goes over the contacts 33, 34 in self-keeping.

Pulling in the relay V also causes the Excitation of relay A, which by means of its closing contact Al via the speed electronics 63 switches on the engine. The crawler gear holder 46 is still geachiossent so that the motor 5a is not yet rotating at its normal speed.

Finally, when contact V2 is closed, the actuating magnet is also activated klV excited for the stepping mechanism. He switches the step switch? 8 of that Contact 30a to contact 30b, whereupon the release switch 15 opens and the self-holding circuit of relay V interrupts. The stop lamp 35a goes out and the engine lamp 36 lights up on.

Although the contacts of relay V now open, the motor remains switched on, because in the meantime the cam contact 59 has switched and the relay A continues on Tension holds.

The Etohwerk swiveled in by the magnet ME also remains swiveled in, because despite the opening of the relay contact V3, the magnet ME via the self-holding contact 32 remains tightened.

Since the coding switch is now through the line coming from contact 30b is activated, a signal coding corresponding to the value stored in it is used given to the comparator 79 via the representative line 114.

It is important that the cam contact '113 is open in this position so that the start button can no longer influence the program sequence. Incorrect switching the operator no longer have a disruptive influence.

The cam contact is in the position of the selector shaft now 105 closed, so that voltage is applied to the machine cycle contact 77, which is in the The rhythm of the machine cycle is applied to trigger 80 in a pulse-like manner.

The counting unit 78 adds up the incoming machine cycle pulses. The comparator 79 compares the summed up value with that of the coding switch 66, - incoming signal. If there is a tie, it gives a signal for excitation via line 81 of the relay V, which is now the next switching step to the fixed contact 30c triggers. The lamp 35b goes out and the. Function lamp 35c "Color / Fluid" lights up. The cam contact 33 actuated by the switching shaft opens, so that the self-holding of the Etchwerk is canceled. The Etchwerk swivels from Foil cylinder away and the contact 34 also opens. It also goes out now Lainpe 36 "Etch". Contact 46, which stops the motor from crawling, now also opens switches to normal gear.

According to the invention, calibration is therefore carried out using a suitable cam control carried out automatically in creep speed.

Now the potentiometer 51 is also used for speed regulation operational and the operator can set the desired engine speed turn on.

It should also be mentioned that the functions "color" and "water" are over the switching shaft 11 can be switched on mechanically.

The voltage of the pole 89 now lies across the fixed contact 30c the voltage source 31 directly at one input of the comparator 79, so that already after the arrival of the first pulse from machine cycle contact 77 there was a tie is reached at the comparator 79 and the stepping mechanism by actuating it again of the relay V is switched by a further step to the fixed contact 30d will.

The counting unit is automatically set to 0. The lamp 35c goes out and the lamp 35d for the "coloring" function lights up the coding switch 6 ?, activated via the fixed contact 30d, so that a dem signal corresponding to the value stored in it via line 114 to the comparator 79 is given. In this position the application rollers are attached to the film cylinder panned. The counting unit 78 adds the incoming machine cycle pulses from Contact 77, and the comparator 79 is in the event of a tie between the input signals in the described above wise the switching signal for relay V so that the tap changer due to the rotation of the switching shaft by the ratchet mechanism is made to the fixed contact 30e. Further, as in FIG each time you switch to the next step, it is automatically reset to 0.

The lamp 35d now goes out and the lamp 35e "rubber blanket" lights up on, the coding switch 6d is now activated, so that it has an output signal the line 114 to the comparator 79 is there. It is now in the "rubber plug" position the film cylinder swiveled to the blanket cylinder.

If the sum of the incoming machine cycle pulses is equal and the value of the coding switch 68, the comparator 79 outputs a further switching signal to the relay V, so that the switch to the next function 30f takes place. The lamp 35e "rubber blanket" now goes out.

An essential feature of the invention is that now the Cam contact 13 closes and makes the control button 12 functional again. Another essential feature is that a cam contact 105 now opens, and thus makes the machine cycle contact 77 inactive.

The lamp 35f "Probedruck" lights up. Pivots in this position the film cylinder away from the blanket cylinder and the color is switched off.

If the position i'Probedruck "is now neither by pressing the switch 88 still by closing the climbing table switch 38 still by a signal via the Line 106 and the diode 107 preselected, a signal is sent via the relay contact P2 1 given to the comparator 79. Since in parallel via the I machine cycle contact 77 a signal is sent to the rl'rigger 80, the machine switches in this Fall immediately further into the print position, since the comparator 79 in the event of a tie the Forwards the switching signal to the relay V via the line 81.

However, if the "test print" setting is preselected or by the riser table or the support preselector is activated, relay contact P2 prevents further switching the machine through the electronics and it remains in the test print position running engine. The relay P goes through the terminal 93 in self-holding to one To enable setting of the repetition counter 40. In the test print position you can press the single sheet button (not shown) as many test prints be made as desired. In between, those deemed necessary can be used Corrections are made.

If the position "test print" by the preselection switch 88 or was selected by the preselection switch 40 (in zero position), can without other Operation by means of the control button 12, the next function "Print" is selected will.

If the lamp 110 is now to go out, an edition must be preselected will.

However, this is the test print position by means of the riser switch 38 has been preselected because this is not in the feed position, so switches according to the invention automatically the contact 41 in the not shown in the drawing Position, and the operating button 12 is through the opening of the contact 42 in inoperative after the trial print run.

Selecting the "Print" function by means of the operating button 12 is so only possible if the riser switch 38 by placing paper and lifting in the working position has been reopened. Unless this has happened, the relay V switches the switching shaft when the operating button 12 is pressed 11 in the printing position so that the movable arm 29 rests on the fixed contact 30g is located. The test print lamp 35f now goes out and the lamp 35g for "print" lights up. The relay P drops out, and it closes the cam contact 82, so that the light bar switch 101 is connected to the input of the trigger 80.

In this position the film cylinder swivels towards the blanket cylinder and color and paper feed are switched on. The counting unit 78 adds up the voltage pulses generated by the light barrier 101 and supplies the sum signal to the comparator 79. The electronic display 94 is now also in function and shows the number of sheets already printed, as soon as the preset number of copies is achieved, the comparator 79 supplies the relay V again with a failure switching signal, so that the step switch switches to the next position 30h "paper stop" 0 It is essential that the switching to the contact 30h also by pressing the Start button can be done so that the print even before the set edition can be interrupted at any time on request.

After switching on, the lamp 35g goes out and the lamp 35h "paper" goes out Stop "lights up.

However, if forwarding was selected due to missing print paper, this contact 44 switches over, whereupon through the then opened Contact 45 the return button 18 is blocked The selection of the pressure function is so only possible after paper has been placed and brought into working position became. The cam contact 112 closes, whereupon the button 18 is ready for operation again ist0 It is now possible to switch back to "pressure" 0 Opens in position 30h now also the cam contact 82, so that the signals from the light barrier to the trigger 80 are prevented.

Was the "Paper Stop" position over after the edition was completed If the electronics are selected, a pulse counts lower preselection in connection with the "paper stop" position via an AND element and the comparator output causes the switching shaft to make a switching step.

If this position was selected by the start button or the monitoring, i.e. the edition has not yet been fully processed, the machine remains in this Position.

If this position is selected using a key or monitoring, the position "cleaning" with the start button or the position with the return button "Print" can be selected.

if the "cleaning" function is selected with the start button 12, is the counter is forcibly set to 0.

The return button 18 is operated in an analogous manner to the operating button 12 the relay V and the magnet MV, via a pulse stage 21 the relay R and the Reset magnet MZ.

The overturn button 18 allows, for example, from the position "Paper Stop "to switch back to the" Print "position, provided this is not due to an irregularity is prevented at the climbing table.

In the normal case, the comparator 79 switches the machine on after reaching from the "Paper Stop" position to position i "Clean" immediately. Here is located the movable arm 29 of the tap changer 28 on the fixed contact 30i, and the "cleaning" lamp 351 lights up.

According to the invention now open the contacts 112, 113 and break under thus the button control. The cam contact 45 closes 0 It also closes the square contact 105, so that voltage is again applied to the machine cycle contact 77 is present e In an analogous way, as with the other Coding Schlatern, there are now so many Cleaning cycles carried out as selected.

The paper feed is triggered by the magnet MR actuated single sheet key.

just as with the pressure position works in the cleaning position the monitoring unit 102 by monitoring the entry and exit of paper and Immediately emits a switching signal via line 81 to relay V if there is an irregularity is detected at the paper or discharge. When forwarding by the monitoring unit 102, so if the edition has not yet been processed, the def counter is compulsory set to 0 when the "blanket washer" position is reached. become ifier the application rollers are set down and the water is switched off.

Normally, the stepping mechanism switches after the preset Cleaning cycles to position 1S, whereupon the lamp 351 goes out and the lamp 35k "Waschwerk" lights up.

In this position the blanket washing mechanism swivels towards the blanket cylinder. The inclination bzvj0 the washing is now in a bar analogous to the one described above Godier switches performed during the preset number of machine cycles.

As soon as this has happened, the relay V switches the step switch again one step further into the starting position a, so that the lamp 35k goes out and the stop lamp 35a lights up. The blanket washing unit swivels from the blanket cylinder weg0 The contact 59 now switches back to the position shown in FIG. 2b to, whereby the rotor 52 is turned off and the creep speed control is turned on. According to the invention the control button 12 and the return button 18 are electronically locked against each other.

The emergency stop button 58 immediately interrupts the motor control and according to the invention switches over to creep speed control at the same time.

By moving the electronics button 87 into the right position in FIG. 2a the electronics are switched off and the machine works by means of key control. That is, all consecutive. Functions through successive Pressing the control button 12 or the return button 18 can be selected. The machine then works essentially in the same way as the offset printing machine according to the patent application P ............... (our reference number P 2359).

Although the coding switches used according to the invention in particular Measures to create an inexpensive, but nonetheless very functionally reliable Printing press can in principle also be replaced by other presettable ones Memory are used.

Claims (49)

Claims 0 offset printing machine, especially for office use, with an electromagnetic operated step-by-step switching mechanism, which turns a switching shaft into one of the numbers one after the other the number of angular positions corresponding to the functions to be performed by the machine can bring, with non-rotatable cam and / or Eurv discs on the selector shaft are attached, the with assigned, permanently attached switching and operating elements Work together in such a way that at each angle position of the shift shaft one predetermined puncture is set, thereby g e k e n n n z e i c h n e t that a coding switch for each function that may require more than one machine cycle (40, 66, 67, 68, 69) is provided on Xie number of hashmen cycles during the the function is to be carried out, it can be preset that the coding switch by means of one that is arranged one after the other on the selector shaft Step switch (28) controlled application of a fixed voltage when the their assigned function can be activated, and that the digital outputs of the Coding switches are connected in a multiple system to a comparator (79) which the one set on the coding switch and present as a digital signal at the output Compares the value with a second digital signal that shows the number of times since Switching on the relevant function corresponds to completed machine cycles, and supplies a switching impulse to the step-by-step switch as soon as there is a tie between the two digital input signals is reached. 2. Printing machine according to claim 1, characterized in that g e k e n n -z e i c h n e t that the tap changer (20) has a movable contact (29) attached to a pole (89) is a low voltage source (31), and several, each assigned to a function, has fixed contacts (30a to 30k), and that the voltage inputs of the Code switches (40, 66, 67, 68, 69, 70) each to the functionally assigned to them fixed contacts (30b, d, e, g, i, k) are connected so that they are bol more appropriate Position of the step switch (28) connected to voltage and to carry out the comparison are activated in the comparator (79). 3. Printing machine according to claim 1 or 2, characterized in that g e k e n n -z e i c h n e t that a briefly actuated once with each rotation of the foil cylinder, Cycle contact (77) that can be activated depending on the switching shaft position is provided is, which in the activated state voltage pulses via a trigger (80) to a Counting unit (70) supplies which adds the incoming 1 "machine cycle signals and a digital sum signal to the comparator (79) for comparison with the set one the coding switch that has just been activated or the direct connection that has just been activated supplies. 4. Printing machine according to one of the preceding claims, characterized G e k e'n n z e i c h n e t> that the edition preselection coding switch (40) is off consists of several decade switches with an electronic numeric display on the Counting unit are connected so that they can be used as a repetition counter for a print run are usable. 5. Printing machine according to one of the preceding claims, characterized it is shown that the output signal of the comparator (79) has a Line (81) applied directly to a relay (V) that triggers the stepping mechanism and if the input signals are tied, the excitation current is applied to it. 6. Printing machine according to one of claims 2 to 5, characterized g e -k It is noted that the fixed contacts (30a, 30h) that perform the functions of paint / fluid and paper stop are assigned without the interposition of a coding switch the one comparison input of the comparator (79) are connected in such a way that the value 1 is transmitted to the comparator. 7. Printing machine according to one of the preceding claims, characterized it is not indicated that for the functions etch, inking, rubber blanket, One coding switch each (66, 67, 68 40> 69, 7 °) is provided for printing, cleaning and washing is. 8. Printing machine according to claim 7, characterized in that g e k e n n -z e i c h n e t that the etch, pressure and cleaning coding switches (66, 40, 69) have a zero position and the other coding switches (6 ?, 68, 70) start at 1, whereby in the zero position, The digital signal 1 is fed to the comparator without the relevant function being switched on and thus an immediate transfer to the next function is effected. 9. Printing machine according to one of the preceding claims, characterized G e k e n n n n z e i c h n e t> that the coding switches apart from the pressure coding switch Have 5 outputs and 16 positions and the pressure coding switch consists of four decade switches with 4 outputs each. 10. Printing machine, in particular according to one of the preceding claims, in that the etch coding switch (66, 72) is at from Zero-deviating position of the etch preselection switch (66) a 0-signal and with zero position outputs a 1-signal to one input (a) of a first inhibition element (84), whose other input (b) a signal from a line (85) receives, via a changeover switch (O6) of an electronics button (87) in electronic mode is connected to the other pole (90) of the voltage source (31), the value 1 at the output of the inhibition member (84) then and only appears when the from Stch coding switch (66, 72) to the element (84) coming signal 0, which comes from the line (85) incoming signal 1 is 0 11. Printing machine according to claim 10, characterized in that g e k e n n -z e i c h n e t that the output of the inhibition member (84) to the one Connection of a swiveling in of the Etchwerkes in the case of excitation Etchwerk actuating electromagnet (liC) is applied, its other connection to the fixed contact (30a) of the stop position of the tap changer (28) is applied. 12. Printing machine according to claim 11, characterized in that g e k e n n -z e i c h n e t that the connection of the electromagnet located at the relay contact (V3) (ME) with one pole (89) of the voltage source (31) also via one of a curve the switching shaft (11) actuated holding switch '(33) can be connected to the switch when switching closes from the stop to the motor switch-on position before the first relay (V) drops out, and opens again at the next switching step. 13. Printing machine according to claim 11 or 12, characterized in that g e -k e n n z e i c h n e t that the Etchwerk is coupled to a switch (34) that is used in Swiveling in the itchwerk closes and thus an indicator lamp (36-) is connected to voltage lays. 14. Printing machine according to claim 12 and 13, characterized in that g e -k e n n z E i c h n e t that the switch (34) coupled with the etching mechanism also with the hold switch (33) is in series0 15. Printing machine according to one of claims 11 to 14, characterized it is noted that the electromagnet (51E) apart from the inhibitor (84) a preselection switch (32) is connected, which is connected to the other contact of the Switch (86) is connected 0 16. Printing machine according to one of claims 11 to 15, characterized in that between the one pole of the voltage source (31) and the connection of the electromagnet (ME) on the inhibitor (84) an etch preselection indicator lamp (37) is switched on. 17. Printing machine according to claim 2, characterized in that g e k e n n -z e i c h n e t> that the fixed contacts (30a to 30k) also to one pole of a Indicator lamp (35a to 35k) for the assigned function are connected, whose other pole is on the other pole (90) of the voltage source (31). 16. Printing machine according to claim 17, characterized in that it is e k e n n -z e i c h n e t that the cycle contact (77) via a cam contact (105) of the control shaft, which except in the stop, test print, print and paper stop position always is closed, with one pole of the voltage source (31) is connected so that it is activated in all but the aforementioned positions 0 19. printing press, in particular according to one of the preceding claims in the prior to printing position a test print position is provided in which the machine is running the paper feed switched off, film cylinder and blanket cylinder separated from each other and the ink supply to the film cylinder is switched off and the aforementioned functions can be switched on for a machine cycle by pressing the single sheet key, This means that the test print position has a firm contact of the step switch (20) and a test pressure preselection switch (88) is provided is, one connection to the one pole (above) and the other connection over a test pressure relay (P) and the changeover switch (86) to the other pole (90) of the voltage source (31) is laid. 20. Printing machine according to claim 192, characterized in that it is e k e n n -z e i c h n e t that the relay (P) has a make contact (P1) for actuating a test print preselection lamp (91) has 0 21. Printing machine according to claim 19 or 20, characterized in that g e -k e n n z e i c h n e t that the relay (P) has a Umschaltkontaltt (P2) whose Switching arm on the fixed contact of the tap changer assigned to the test print position (28) is present, whose connected to the switching arm when the relay (P) is not energized Contact (92) in the test printing position via a multiple composite line (116) 1 applies to that input of the comparator (79) at which the coding switch lie, and this when the relay (P) is excited with the switching arm The connected contact (93) leads to the same connection of the relay (P) as the preselection switch (ö'8), so that the relay (P) moves forward until the step switch (28) itself holds. 22. Printing machine according to claim 14 and 21, characterized in that g e -k e n n z e i c h n e t that the first-mentioned contact (92) is also connected to the cycle contact (77) is applied, so that when the test print preselection switch (88) is open in the case of the test print position of the tap changer (28) a 1 to one input and another 1 to the Cycle contact (77) is given to the other input of the comparator (79) so that a switching signal appears on the relay (V). 23. Printing machine according to one of claims 19 to 22, characterized g e It is noted that parallel to the test print preselection switch (88) Climbing table switch (38.) is switched, which is only open when the Rising table is in the feed position. 24. Printing machine according to one of the preceding claims, characterized it is not indicated that the counting unit (78) receives the number of incoming Pulse displaying unit (94) is connected. 25. Printing machine according to claim 24, characterized in that it is e k e n n -z e i c h n e t that from the comparator (79) a Rüclrmeldeleline (95) to the input of the counting unit (78) leads, via which a clear signal to the counting unit when a tie is reached (78) is given. .26. Printing machine according to one of the preceding claims, characterized it does not indicate that the program electronics are fed to the low-voltage source (31) a stabilization circuit (o3) is connected. 27. Printing machine, in particular according to one of the preceding claims, as a result, there is a cleaning position after the paper stop position is provided, which is assigned a fixed contact (30i) of the tap changer (28) is and in which the selector shaft while the machine is running, the cylinders of the The machine moved apart, the application rollers lifted off and water and ink supply are switched off and the cylinders are combined by pressing the single sheet button drive and the paper feed is switched on, but without the application roller is applied and the water and paint supplies are switched on. 28. Printing machine according to claim 27, characterized in that a preselection switch (69) for the cleaning position gt. Sert memory (g5) existing coding switch is provided, the one Has lullstellung, in which a direct multiple connection representing the 1 from the fixed contact (301) to the input of the comparator (79) and a signal 1 is given to the first input (a) of a second inhibition element (96), whose second input (b) is on line (85), and the one when preselected finite whole number a digital signal corresponding to the set value to the input of the comparator (79) and the signal O to one input of the inhibition element (96) there. 29. Printing machine according to claim 2b, characterized in that it is e k e @ n n -z e i c h n e t that the output of the inhibition element (96), which is a signal 1 then and only then emits when the signal 0 at the first input and the signal at the second input 1 is present, to one terminal of a single-sheet key actuating electromagnet (MR) is applied, the other connection of which is assigned to the cleaning position fixed contact (30i) of the tap changer (28) is supplied. 30. Printing machine according to claim 29, characterized in that g -e k e n n -z e i c h n e t that between the outputs of the inhibition members (84, 96) and the one Pole of the voltage source (31) Indicator lamps (37, 97) for the preselection "Etch" or "Clean" are placed. 31. Printing machine according to one of claims 9 to 30, characterized O e k It is noted that the pricking and cleaning code switches (66,, 69,) for the purpose of controlling one input (a) of the inhibition members (84, 96) in the are connected to the line (85). 32. Printing machine according to one of the preceding claims, characterized it is noted that the fixed contacts (30g, 30i) of the printing position and optionally the cleaning position via one diode (98, 99) each with one -first switch (100), which short-circuits and in closed state the connection to a first input (103) in the comparator (79) provided monitoring unit (102), and with a second switch (101) are connected, the short when each sheet of paper leaves the machine closes and in the closed state the connection to a second input (104) the one in the comparator (79) provided monitoring unit (102) manufactures, in which the two of one and the same sheet of paper in a certain time Successive two input signals to be triggered constantly overpowered the awakening unit (102) in the absence of one or both signals Via the comparator (79) a switching signal to the stepping unit upstream relay (V) releases. 33. Printing machine according to claim 32, characterized in that g e k e n n -z e i c It should be noted that the second switch is a light barrier switch (101). 34. Printing machine according to claim 32 or 33, characterized in that g e -k e n n z e i c h n e t that the second input (104) of the monitoring unit has a Cam contact (82), that of the cam on the control shaft (11) only in the pressure position is closed, but is otherwise open, is applied to the trigger (80) 0 35th printing press, in particular according to one of the preceding claims, characterized in that c h n e t that the edition preselection Godier switch (40,.) at zero position to a The indicator lamp (110) applies voltage via a line (106). 36. Printing machine according to claim 35, characterized in that it is 11 n e t that the line (106) has any voltage applied to it passing diode (107) applies to the relay (P), so that this is excited. 37. Printing machine, in particular according to one of the preceding claims, characterized that a toggle switch electronics key control is provided which, in addition to the first changeover switch (86), is a machine cycle contact (77) from the trigger (80) separating contact (108) and another changeover switch (109) having. 33. Printing machine according to claim 37, characterized in that there is no e n nz e i c h n e t that the first changeover switch (66) also controls an electronic indicator lamp (111). 39. Printing machine according to claim 37 or 38, characterized in that g e -k e n n z e i c h n e t that the first switch (86) the test pressure relay (P) and the inhibition members (84, 96) switches off the voltage at the key control position. 40. Printing machine according to one of claims 37 to 39, characterized g e it is not shown that the first toggle switch (ö6) is a key-operated switch Etch preselection individual switch (32) applies voltage, which is also connected to the Etchwerk actuating electromagnet (ME) is connected. 41. Printing machine according to one of claims 37 to 40, characterized g e it is not noted that apart from the start button which actuates the series relay (V) (12) one that switches the stepping mechanism backwards via a switch-back relay (R) Return button (18) is provided, which by the second switch (109) at Button control, if necessary with the interposition of safety contacts (41, 42, 44, 45) is placed directly on one pole of the voltage source (31), while With electronic control, the changeover switch (-109) controls the voltage via a cam contact (112), which is only closed in the paper stop position, 'to the return key (18) and about one further cam contact (113), which is only available for the Positions test print, print, paper stop, stop is closed, on the start button (12) puts the key-side connections of the cam contacts (112, 113) through a diode connecting the current flow from the return button (18) to the start button (12) (43) are connected. 42. Printing machine, in particular according to one of the preceding claims, in that the display panel (Fig. 3) is vertically one above the other the preselection switches (66 to 70) in the order of the functions and that next to it at the same height the indicator lamps (35, 36) for the assigned Function are arranged. 43. Printing machine according to claim 42, characterized in that it is e k e n n -z e i c h n e t that for each function not assigned to a preselection switch between the preselection switches left a place and next to it the corresponding lamp (35a, c, g, h) arranged is. 44. Printing machine according to claim 42 or 43, characterized in that g e -k e n n z e i c h n e t that between the Vorwalilsohalterern having a zero position (66, 88, 69) and the respective function indicator lamp (36, 35f, 35i) preset indicator lamps (37, 91, 97) are arranged. 45. Printing machine according to one of Claims 42 to 44, characterized in that it is it is not noted that the electronics button (d7) is located next to the indicator light field elongated key is formed over its entire height. 4C. Printing machine according to Claim 45, characterized in that g. e k e n n -z e i c It should be noted that the key is translucent and that the electronic lamp (111) is arranged below it is0 47. Printing machine according to one of claims 42 to 46, characterized in that g e k e n n z e i c h n e t> that below or above the display lamp field next to each other the display unit (94) and the edition preselection switch (40) are arranged. 48. Printing machine according to claim 47, characterized in that it is e k e n n -z e i c h n e t that between the display unit (94) and the preselection switch (40) the edition pre-selection warning lamp (110) is arranged. 49. Printing machine according to claim 4d, characterized in that the warning lamp (110) is designed as an arrow directed to the preselection switch (40). 5 ~ ruckmaschille according to one of the previous claims marked there, da ines or more about features of the # real at the same time Patent registration K e @ oe »» Title "Off- set printing machine "r Ze 5 2358). 51. Printing machine according to the One claims that by virtue of 1 ct that they are one or me i <features of the real at the same time Paten eldung P ,,.,., .. ,,., E with the title "Of> ckmachine ". (Our reference: 5 2359).