EP0436102B1 - Collecting cylinder for the folding device of a printing machine - Google Patents

Description

The invention relates to a collecting cylinder, with which certain folders of a printing press are equipped.

It is known that these folders are mostly used in duplicate for printed paper webs, i. H. with a printing plate, the two halves of which each produce a copy on paper, which are generally referred to as copy A and copy B and are each printed by a half turn of the printing roller equipped with the printing plate, so that the printed paper web obtained in this way ensures a regular succession of copies A and B. The paper web is sometimes also printed in triplicate, i.e. H. with a regular succession of copies A, B, and C.

The collecting cylinders usually have such a size that they can hold three specimens. Along the corresponding surface lines, they have three regularly distributed cutting bars (or cutting rubber), three driving elements arranged immediately behind each cutting bar and three folding knives halfway between two cutting bars. Collection cylinders are also known which can hold two, four, five and even seven specimens.

In the front area, the collecting cylinder works together with a cutting cylinder that is equipped with serrated cutting knives. This cutting cylinder is arranged in relation to the collecting cylinder in such a way that the toothed cutting knives penetrate into the cutting bar in order to cut the paper web, which is immediately held on the collecting cylinder by the driving element. A cutting cycle occurs every time the orbit is around the Moved the length of a copy, the orbit being arranged such that it is cut in the region of the dividing line between two copies.

Behind it, the folding knife works together with a folding jaw cylinder, which is equipped with folding jaws that are regularly arranged along a surface line. In relation to the collecting cylinder, this cylinder is arranged in such a way that every time a folding flap touches the collecting cylinder, it faces a folding knife.

When the folder opposite a folder is extended, the paper covering it is gripped by the folder, the retainer preceding the folder is relaxed and the paper is transferred to the folder while folding is taking place.

Depending on the requirements, the collecting cylinders are switched to multiple (double or triple) production or to collecting mode.

In the multiple operating mode, each engaging knife is extended whenever it is opposite a jaw, so that each copy is transferred to the jaw cylinder independently and independently. This production mode is generally used when copies A and B or A, B and C are identical.

In the case of the collection mode, in the case of the double sequence and in the case of a collection cylinder which can hold three copies, each engaging knife is only moved out once when it is opposite a folding flap. If the knife is not extended, then it stays the specimen that it covers is on the collecting cylinder and is covered with the next rotation by a second specimen. When the jaw moves out, it is the group of the two copies that are transferred to the jaw cylinder, each group comprising a copy A and a copy B, since the copy that is on the cylinder is replaced by the third one following it Copy is covered.

With a double sequence, one still sometimes uses collecting cylinders which can hold five or even seven copies. The mode of operation is similar, but each copy is covered by the fifth or sixth copy following it.

In the case of the triple sequence, a collecting cylinder which can hold five copies is generally used, but cylinders which can hold two, four or seven copies are sometimes also used, with each folding knife only being extended the third time when it is is opposite a folding flap.

• für jedes eingreifende Messer eine Falzmesserwelle, die eine Eingriffsposition ermöglicht, in der das Messer herausgefahren wird, und eine Rückholposition, in der das Messer zurückgefahren wird;
• eine stationäre Steuerkurve für die Steuerung der Falzmesserwelle, mit einem Steuerbereich an ihrem äußeren Umfang, wobei jede Falzmesserwelle einen Hebel besitzt mit einer Rolle, die elastisch auf der besagten Steuerkurve aufliegt. Dabei ist jede Falzmesserwelle in Eingriffsposition, wenn ihre Rolle sich in Steuerbereichsposition befindet, andernfalls ist sie in eingefahrener Stellung. Dabei ist die besagte Steuerkurve dergestalt angeordnet, daß ihr Steuerbereich direkt der Rolle einer Messerwelle gegenüberliegt, wenn das dieser Welle zugeordnete Eingriffselement sich gegenüber einer Falzklappe des Falzklappenzylinders befindet;
• für jedes Festhalte- oder Mitnehmerorgan, eine Mitnehmerwelle, die eine Mitnehmerposition ermöglicht, in der das Papier auf dem Zylinder festgehalten wird, und eine Freigabeposition, in der das Papier losgelassen wird;
• eine stationäre Steuerkurve für den Antrieb der Mitnehmerwellen, mit einem Steuerbereich an ihrem äußeren Umfang, wobei jede Mitnehmerwelle einen Hebel besitzt mit einer Rolle, die elastisch auf der besagten Steuerkurve aufliegt. Dabei ist jede Mitnehmerwelle in Auslöseposition, wenn ihre Rolle sich im Steuerbereich befindet, andernfalls sie sich in Mitnehmerposition befindet. Die besagte Steuerkurve ist dergestalt angeordnet, daß ihr Steuerbereich sich gegenüber der Rolle einer Mitnehmerwelle befindet, wenn das eingreifende Messer, das dem dieser Mitnehmerwelle zugeordneten Mitnehmerorgan vorgelagert ist, einer Falzklappe des Falzklappenzylinders gegenüberliegt;
• ein Abschnitt mit dem gleichen Radius wie der Radius des kreisrunden Teils der Steuerkurve der Mitnehmerwellen, und ein Abschnitt mit dem gleichen Radius wie der kreisrunde Teil der Steuerkurve der Messerwellen, wobei jede sich koaxial zum Sammelzylinder schneller und in gleicher Richtung dreht; jede Messerwelle und Mitnehmerwelle besitzt einen eingebauten Hebel mit einer Rolle, die so eingerichtet ist, daß sie mit ihrem Abschnitt dergestalt zusammenwirkt, daß, wenn die Rolle des eingebauten Hebels sich gegenüber dem Abschnitt zur gleichen Zeit befindet, in der auch die Rolle des Haupthebels dem Steuerbereich seiner Steuerkurve gegenüberliegt, sie dort nicht abwärts laufen kann, sondern dem gleichen Weg folgt, als ob es kein Steuerbereich gäbe; jeder Abschnitt besitzt eine winkelförmige Öffnung dergestalt, daß er durch Phasenverschiebung eine neutralisierte Position ermöglicht, in der er nicht mit den Rollen der eingebauten Hebel in Berührung kommt und eine Arbeitsposition, in der er diese Rollen tangiert.

Collective mode is generally used when specimens A and B or A, B and C are different. Various devices for controlling the holding or driving elements and the folding knife of the collecting cylinder are already known, in particular also a device such as can be seen, for example, from DE-A-1810294, which comprises the following features:

• for each engaging knife a folding knife shaft which enables an engagement position in which the knife is withdrawn and a return position in which the knife is retracted;
• a stationary control cam for controlling the folding knife shaft, with a control area on its outer Scope, each folding knife shaft has a lever with a roller which rests elastically on said control cam. Each folding knife shaft is in the engaged position when its roll is in the control area position, otherwise it is in the retracted position. Said control cam is arranged in such a way that its control area lies directly opposite the role of a knife shaft when the engagement element assigned to this shaft is located opposite a folding jaw of the folding jaw cylinder;
• for each holding or driving element, a driving shaft which enables a driving position in which the paper is held on the cylinder and a release position in which the paper is released;
• a stationary control cam for driving the driver shafts, with a control area on its outer circumference, each driver shaft having a lever with a roller which rests elastically on said control cam. Each driver shaft is in the release position if its role is in the control area, otherwise it is in the driver position. Said control cam is arranged in such a way that its control area is located opposite the role of a drive shaft when the engaging knife, which is located upstream of the drive element assigned to this drive shaft, is opposite a folding jaw of the folding jaw cylinder;
• a section with the same radius as the radius of the circular part of the control curve of the drive shafts, and a section with the same radius as the circular part of the control curve of the knife shafts, each rotating faster and in the same direction coaxially with the collecting cylinder; each cutter shaft and drive shaft has a built-in lever with a roller that way is arranged to cooperate with its section in such a way that if the role of the built-in lever is at the same time as the section in which the role of the main lever is also opposite the control area of its control curve, it cannot run down there, but instead follows the same path as if there were no tax area; each section has an angular opening in such a way that it enables a neutralized position by shifting the phase in which it does not come into contact with the rollers of the built-in levers and a working position in which it touches these rollers.

In the neutralized position of the sections, the interaction between the roles of the main levers and the corresponding stationary control cams is never interrupted. The cylinders operate in the multiple production mode.

In the working position of the sections, the cylinders work in the collecting mode.

When switching from one of the multiple production and collection modes to another, it is necessary to turn off the folder and move the two sections, which has the disadvantage that it is a lengthy and relatively complicated process.

One of the objectives of the present invention is to provide a collecting cylinder which has a device for the control of the holding or driving elements and corresponding engaging knives, the operating mode being easily changed.

Another object of the present invention is to expand the operating possibilities of the collecting cylinders.

• für jede Mitnehmerwelle und für jede Messerwelle ein mit dem Zylinder formschlüssig verbundener Riegel, der eine Arbeitsposition ermöglicht, in der er die Welle blockiert, um zu verhindern, daß die Rolle in den Steuerbereich der Steuerkurve herabgleitet, und eine Ruhestellung, in der er nicht auf die Welle einwirkt;
• Vorrichtungen zur Erzeugung von Signalen, die für die Riegel bestimmt sind und in Abhängigkeit von der Winkelposition der Zylinder mindestens eine Reihe periodischer Signale erzeugen, um die Zylinder in der Sammelbetriebsart zu steuern;
• Vorrichtungen, um die Riegel auf die besagten Signale reagieren zu lassen, wobei jeder Riegel die besagte Arbeitsposition dann einnimmt, wenn ein Signal für ihn bestimmt ist, während er andernfalls die Ruhestellung einnimmt;
• eine Vorrichtung zur Auswahl der Betriebsart der Zylinder, mit Hilfe derer die Riegel entsprechende Signale bekommen oder keine Signale erhalten.

Such a cylinder on which the invention is based is characterized in that the control device has the following elements instead of the rotating section and the attached roller levers:

• for each drive shaft and for each cutter shaft, a bolt which is positively connected to the cylinder and which enables a working position in which it locks the shaft in order to prevent the roller from sliding down into the control region of the control cam, and a rest position in which it does not open the wave acts;
• Devices for generating signals intended for the latches and which, depending on the angular position of the cylinders, generate at least one series of periodic signals in order to control the cylinders in the collection mode;
• Means for causing the latches to respond to said signals, each latch assuming said working position when a signal is intended for it while otherwise in the rest position;
• a device for selecting the operating mode of the cylinder, with the aid of which the latches receive appropriate signals or receive no signals.

When the latches receive signals, the cylinder is operating in the collection mode; if, on the other hand, they do not receive any signals, the bolts remain in the rest position and the cylinder works in multiple production.

It is therefore sufficient to carry out a simple switchover process in order to change from one operating mode to another. This process is easy to automate and in any case much simpler compared to the mechanical process that was still required in the previous devices.

In a preferred form of embodiment of the invention, which is particularly simple to implement, this selection device consists of an electrical changeover switch which is arranged between the devices for triggering signals and an electrical current source which supplies the signals. When the switch disconnects the triggering devices from the supply source, they produce no signal and the cylinder operates in multiple production, while the cylinder operates in collective mode when the switch enables power to the signal triggering devices.

• besitzen die besagten Einrichtungen für die Auslösung der Reaktion der Riegel einen elektrischen Drehkontakt, der für jede, über die besagten Signalauslöseorgane erzeugte Signalserie einen Ring aufweist, der formschlüssig mit dem Zylinder und direkt oder indirekt mit jedem Riegel verbunden ist, für den die Signalserie bestimmt ist; außerdem besitzt er einen stationären Schleifkontakt, der an die Einrichtung für die Auslösung der Signale angeschlossen ist;
• hat jeder der besagten Riegel eine bewegliche Stange, die in der Arbeitsposition ausgefahren und in der Ruheposition eingefahren ist;
• ist jeder der besagten Riegel in einem Flansch der Sammelzylinder montiert, und zwar in der Nähe der Welle, der er zugeordnet ist.

According to other properties and characteristics preferred for the same reason

• said devices for triggering the reaction of the bolts have an electrical rotary contact which has a ring for each signal series generated by said signal triggering elements, which is positively connected to the cylinder and directly or indirectly to each bolt for which the signal series is intended ; it also has a stationary sliding contact which is connected to the device for triggering the signals;
• each of said latches has a movable rod which is extended in the working position and retracted in the rest position;
• each of said bolts is mounted in a flange of the cylinder, in the vicinity of the shaft with which it is associated.

In a collecting cylinder, as is characteristic of the present invention, instead of a purely mechanical system, which simultaneously blocks the shafts and, depending on the position of the cylinders, determines at which moment the shafts are to be blocked, on the one hand the bolts, which the Block waves and on the other hand the means for triggering the signals, which determine when the waves are to be blocked.

A collecting cylinder on which the present invention is based is thus able to take over any operating mode in the collecting operating mode, specifically when the corresponding signals are triggered.

The invention thus makes it possible - as will be clarified elsewhere - to provide collecting cylinders which implement various collecting forms and which expand the operating possibilities of this cylinder or these cylinders.

If, for example, you want to operate the folders with a circulation of printed paper in two sequences, whereby the collecting cylinders either produce a double production or a collection of two copies each, you use a cylinder that has engaging knives in odd numbers, but at least three knives.

So that in such a case copies A and B always stack on top of each other in the same order (for example, copy B always lies on copy A), it is provided that the means generate a series of signals for triggering the said signals, for each pair of bolts, each consisting of a first bolt coupled to a knife shaft and a second bolt connected to the preceding drive shaft; the triggered signals are aligned so that the paper covering a first engaging knife is not transferred to the jaw cylinder, while the paper covering a second folder following the first engaging knife is transferred, etc.

• einen Abschnitt, der sich im Vergleich zu dem Sammelzylinder mit halber Geschwindigkeit dreht,
• eine stationäre Meßzelle für jedes eingreifende Messer, wobei diese Meßzellen winkelförmig und regelmäßig gegenüber der Umlaufbahn des Abschnitts verteilt sind,
• und Mittel zur Erzeugung einer Reihe von für jede Meßzelle bestimmten Signalen, wobei ein Signal dann erzeugt wird, wenn eine Meßzelle sich dem Abschnitt gegenüber befindet und andernfalls nicht erzeugt wird.

According to the features and characteristics preferred by its simplicity, convenience and economy, said means for triggering signals include:

• a section that rotates at half the speed of the collecting cylinder,
• a stationary measuring cell for each engaging knife, these measuring cells being angular and regularly distributed with respect to the orbit of the section,
• and means for generating a series of signals intended for each measuring cell, a signal being generated when a measuring cell is opposite the section and is not otherwise generated.

According to the preferred properties and features, said means for generating signals also have a second stationary measuring cell for each engaging knife, which, however, is offset by 180 ° in relation to the first-mentioned measuring cell, and a selector switch so that the signals either for the said first measuring cells or for the aforementioned second measuring cells can be generated. Thus, if the paper web is in one and the same position in relation to the collecting cylinder, one has a set of measuring cells with the specimens A covering the specimens B, while with the other set of measuring cells the specimens B cover the specimens A.

It can be seen from this that the invention not only makes it easier to change the operating mode of the collecting cylinder, but also offers the advantage of expanding the operating or application options in the collecting mode.

For example, if you want the folder to work with a printed paper web in triplicate, with the collecting cylinder either producing three times or stacking three copies, a cylinder with an appropriate number of folding blades, in particular two, four, five or seven, is used .

So that in such a case, in the collective mode of operation, the copies A, B, and C are stacked on top of one another, and always in the same order, it is provided that the means for triggering the signals trigger a signal series for each pair of bolts, the pair of bolts one has a first bolt which is assigned to a knife shaft and a second bolt which is assigned to the preceding drive shaft; the signals generated are adapted so that the paper that covers a first engaging knife is not transferred to the jaw cylinder and the paper that covers a second knife that engages the first is not transferred, while the paper that a third, following the second knife, engaging knife covers, is transferred to said jaw cylinder, etc.

If, therefore, a copy is held on the cylinder with five folding blades, it will be covered by the fifth copy following it during the next rotation, ie if the first is a copy B, it is covered by a copy A; if specimens B and A are retained on the cylinder, they are covered by a specimen C with the next revolution.

• einen Abschnitt, der sich im Verhältnis zu dem Sammelzylinder mit einem Drittel ihrer Geschwindigkeit dreht,
• ein stationäres Meßzellenpaar für jedes eingreifende Messer, wobei die Meßzellen eines jeden Meßzellenpaars 240° zueinander versetzt sind, und die Meßzellenpaare winkelförmig regelmäßig gegenüber der Umlaufbahn des Abschnitts verteilt sind,
• hinzu kommen Mittel zur Erzeugung einer Reihe von für jede Meßzelle bestimmten Signalen, wobei ein Signal dann erzeugt wird, wenn eine Meßzelle sich dem Abschnitt gegenüber befindet und andernfalls kein Signal erzeugt wird.

According to the properties preferred for their simplicity, convenience and economy, said means for generating signals have:

• a section that rotates at a third of its speed in relation to the collecting cylinder,
• a stationary pair of measuring cells for each engaging knife, the measuring cells of each pair of measuring cells being offset by 240 ° to one another, and the pairs of measuring cells being regularly angularly distributed relative to the orbit of the section,
• in addition there are means for generating a series of signals intended for each measuring cell, a signal being generated when a measuring cell is located opposite the section and no signal is otherwise generated.

Thanks to this invention, by using a cylinder with a corresponding number of engaging knives, in particular five or seven, it is possible to use one and the same folder with a printed paper web either in a double or in a three-fold sequence, either in a multiple production or runs in a double or triple collection of two copies.

In this way, the possible uses of the collecting cylinders can be expanded.

• entweder das Papier, das ein erstes Falzmesser überdeckt, nicht auf den Falzklappenzylinder übertragen wird, während das Papier, das ein zweites eingreifendes Messer, welches sich an das erste Messer anschließt, abgedeckt wird, usw.;
• oder das Papier, das ein erstes eingreifendes Messer überdeckt, nicht auf den Falzklappenzylinder übertragen wird, und das Papier, das ein zweites, sich an das erste anschließende Falzmesser überdeckt, gleichfalls nicht übertragen wird, während das Papier, das ein drittes, sich an das zweite Messer anschließende eingreifende Messer überdeckt, auf den besagten Zylinder übertragen wird, usw.

So that the copies A and B or A, B and C are always superimposed or stacked in the same order in the collective mode, it is provided that the means for generating or triggering signals generate a signal series for each pair of bolts, each pair of bolts a first , a bolt shaft associated bolt and a second, associated with the preceding drive shaft Riegel also includes a collective changeover switch, depending on the position of which the signals generated are aligned so that:

• either the paper covering a first folding knife is not transferred to the jaw cylinder while the paper covering a second engaging knife which is connected to the first knife, etc .;
• or the paper that covers a first engaging knife is not transferred to the jaw cylinder and the paper that covers a second folding knife adjoining the first is also not transferred, while the paper that covers a third is attached to the second knife, subsequent engaging knife covers, is transferred to said cylinder, etc.

The first position corresponds to an overlay of two copies and the second position corresponds to one of three copies.

• einen ersten Abschnitt, der sich im Vergleich zu dem Sammelzylinder mit halber Geschwindigkeit dreht, und eine erste stationäre Meßzelle für jedes eingreifende Messer, wobei die besagten Meßzellen in Winkelform regelmäßig gegenüber der Umlaufbahn des ersten Abschnitts verteilt sind;
• ein zweiter Abschnitt, der sich mit einem Drittel der Geschwindigkeit im Verhältnis zu dem Sammelzylinder dreht, und ein Paar zweiter stationärer Meßzellen für jedes Falzmesser, wobei die Meßzellen eines jeden Meßzellenpaars um 240° zueinander versetzt sind, und die besagten Meßzellenpaare winkelförmig und regelmäßig gegenüber dem zweiten Abschnitt verteilt sind;
• Mittel zur Erzeugung einer Reihe von Signalen für jede der besagten ersten oder zweiten Meßzellen, und zwar in Abhängigkeit von der Position der besagten Sammelmengenmeßzelle, wobei ein Signal erzeugt wird, wenn eine Meßzelle sich ihrem Abschnitt gegenüber befindet, und kein Signal erzeugt wird, wenn dies nicht der Fall ist.

According to the characteristics preferred for its simplicity, convenience and economy, said means for generating signals comprise:

• a first section rotating at half the speed of the collecting cylinder and a first stationary measuring cell for each engaging knife, said measuring cells being angularly distributed regularly with respect to the orbit of the first section;
• a second section which rotates at a third of the speed in relation to the collecting cylinder and a pair of second stationary measuring cells for each folding knife, the measuring cells of each pair of measuring cells are offset from one another by 240 °, and said measuring cell pairs are angularly and regularly distributed with respect to the second section;
• Means for generating a series of signals for each of said first or second measuring cells depending on the position of said collective measuring cell, generating a signal when a measuring cell is opposite its section and not generating a signal when so is not the case.

Fig.1

zeigt eine schematische Aufrißansicht eines Falzapparates mit einem Sammelzylinder im Sinne der Erfindung;

Fig.2

zeigt eine perspektivische Ansicht mit teilweisen Ausbrüchen und eine schematischen Darstellung dieses Zylinders;

Fig.3

ist eine Ansicht in Schnittperspektive gemäß einer Ebene quer zum Zylinder nahe dessen mittlerer Querebene, von der Seite in Fig. 2 links betrachtet;

Fig.4

ist eine Darstellung in Schnittperspektive gemäß einer Querebene zwischen dem Flansch des Zylinders rechts in der Fig. 2 und den stationären Steuerkurven, von der Seite in Fig. 2 links betrachtet;

Fig.5

ist eine Teilansicht ähnlich der Fig. 3, die eine Variante in bezug auf die Riegelausführung darstellt;

Fig.6

ist eine teilweise Längsschnittansicht quer durch eine Welle und zeigt eine Variante der Sammelzylinder;

Fig.7

ist eine schematische Darstellung der Riegelsteuervorrichtungen;

Fig.8

ist eine Aufrißansicht von der Seite in Fig. 2 rechts betrachtet. Sie zeigt den Drehsektor und die Näherungsschalter, die es ermöglichen, die für die Riegel bestimmten Signale zu erzeugen;

Fig.9

ist eine ähnliche Ansicht wie Fig. 8. Sie zeigt eine Variante;

Fig.10

zeigt in schematischer Form den Umschalter dieser Variante;

Fig.11

zeigt, auf die gleiche Art und Weise wie Fig. 1, eine Variante des der Erfindung zugrundeliegenden Sammelzylinders mit fünf Falzmessern und den entsprechenden Elementen anstelle von dreien;

Fig.12

ist eine ähnliche Ansicht; sie zeigt den Abschnitt und die Näherungsschalter, die es ihm ermöglichen, eine Ansammlung von jeweils drei Exemplaren zu verwirklichen; und

Fig.13

zeigt in schematischer Form den Wahlschalter, der den Zylinder der Fig. 11 in die Lage versetzt, entweder eine Ansammlung von zwei Exemplaren oder eine solche von drei Exemplaren herbeizuführen.

The description of the invention is continued by the explanation of examples for the implementation of the inventive idea with reference to the accompanying drawings. These examples are purely illustrative and not restrictive.

Fig. 1

shows a schematic elevation view of a folder with a collecting cylinder in the sense of the invention;

Fig. 2

shows a perspective view with partial breakouts and a schematic representation of this cylinder;

Fig. 3

is a sectional perspective view along a plane transverse to the cylinder near its central transverse plane, viewed from the left side in Fig. 2;

Fig. 4

is a sectional perspective view along a transverse plane between the flange of the cylinder on the right in FIG. 2 and the stationary control cams, viewed from the left in FIG. 2;

Fig. 5

FIG. 3 is a partial view similar to FIG. 3, illustrating a variant with respect to the latch design; FIG.

Fig. 6

is a partial longitudinal sectional view across a shaft and shows a variant of the collecting cylinder;

Fig. 7

Figure 3 is a schematic illustration of the latch control devices;

Fig. 8

is an elevational view viewed from the side in FIG. 2 on the right. It shows the rotating sector and the proximity switches that make it possible to generate the signals intended for the bolts;

Fig. 9

is a view similar to Fig. 8. It shows a variant;

Fig. 10

shows the switch of this variant in schematic form;

Fig. 11

shows, in the same way as Figure 1, a variant of the collecting cylinder on which the invention is based with five folding blades and the corresponding elements instead of three;

Fig. 12

is a similar view; it shows the section and the proximity switches that enable it to realize a collection of three copies each; and

Fig. 13

shows in schematic form the selector switch, which enables the cylinder of FIG. 11 to produce either a collection of two specimens or that of three specimens.

The folder shown in Fig. 1 is generally known in terms of its type. It is designed to work with a printed paper web in double mode, i. that is, with a succession of copies A and B.

In the order in which the paper passes, it has a hopper 2, perforating rollers 2A and 2B, a cutting cylinder 3, a collecting cylinder 4 designed in accordance with the invention, which cooperates with the cutting cylinder 3 at the front, and a folding jaw cylinder 5 with which the collecting cylinder 4 cooperates at the rear, two deceleration cylinders or rollers 6A and 6B, each of which cooperates with the jaw cylinder 5 and two former folds 7A and 7B, which are each arranged behind the cylinders 6A and 6B.

Cylinders 3, 4, 5, 6A and 6B rotate in the direction indicated by the arrows.

The hopper 1 takes over the printed paper web directly from the printing unit. It has a shape such that it folds the orbit longitudinally in the middle.

The perforating rollers 2A and 2B each have the same circumference as the printing cylinder and have devices for perforating the folded paper web 8 discharged from the hopper 1 in the transverse direction at the locations where the paper is due to the interaction of the cylinders 4 and 5 (see below) is folded.

The cutting cylinder 3 has the same circumference as the printing cylinder and has two toothed cutting knives 9A and 9B, which are diametrically opposite one another and are each arranged along a surface line.

The collecting cylinder 4 has a circumference that corresponds to 1 1/2 times the circumference of the printing cylinder. Along the corresponding surface lines it has (see also FIGS. 2 and 3) three folding knives 10A, 10B and 10C, which are regularly distributed, three driving elements 11A, 11B and 11C, which each consist of a series of registration and register pins 11 , which are arranged immediately after each folding knife, and three folding knives 12A, 12B and 12C, which are located halfway between two folding knives.

The cylinders 3 and 4 are arranged with respect to one another in such a way that the toothed cutting knives 9A and 9B engage in one of the folding knives 10A, 10B and 10C when they respectively touch the collecting cylinder 4 in order to cut the paper in the transverse direction. Thanks to the driving element behind the Folding knife is arranged, the paper is immediately held on the cylinders.

In view of the diameter and the arrangement of the toothed cutting knives of the cutting cylinder, a cut is made each time the paper web has been advanced by a length which corresponds to half a radius of the printing cylinder, the orbit being arranged so that it is cut at the point of separation between the specimens becomes.

The jaw cylinder 5 has a circumference that corresponds to 2 times the circumference of the impression cylinder. It has four folding jaws 13A, 13B, 13C and 13D, which are regularly distributed and arranged along a generatrix. The cylinders 4 and 5 are arranged in relation to one another in such a way that each time a folding flap touches the collecting cylinder 4, it is located opposite a folding knife.

The deceleration cylinders 6A and 6B rotate at the same angular velocity as the jaw cylinder 5. They are carriers of the pincer or pinch roller 14A and 14B for the cylinder 6A, and carriers of the pincer or pinch roller 14A 'and 14B' for the cylinder 6B.

The retard cylinders are offset from each other such that the clamp 14B of the cylinder 6A, when passing through, detects the specimen carried by the knife 13D of the cylinder 5, while the clamp 14A of the cylinder 6A detects the specimen carried by the knife 13B of the cylinder 5, and the clamp 14A 'of the cylinder 6B takes hold of the copy carried by the knife 13C of the cylinder 5, the clamp 14B' of the cylinder 6B finally taking over the copy 13A of the cylinder 5.

In addition, since the diameter of the cylinders 6A and 6B is smaller than that of the cylinder 5, and these cylinders all three rotate at the same angular speed, the linear speed of the retard cylinders is lower than that of the folding cylinder 5.

The collecting cylinder 4 is shown in detail in FIGS. 2 to 6.

It has a central shaft 15, which rotates in the bearings 16A and 16B, which are positively connected to the frame 17 of the folders, two flanges 18A and 18B in the form of disks welded to the shaft 15, and the like The distance from one another essentially corresponds to the width of the folded orbit 8, and finally a plate 19 which is welded to the flanges 18A and 18B and forms the side wall of the cylinder.

The register pins 11 are carried by the levers 29, while the entirety of the levers of each of the driving elements 11A, 11B, 11C is carried by the shafts 30A, 30B and 30C, respectively. This shaft is rotatably supported on the flanges 18A and 18B near the plate 19, in the bearings 21A and 21B. In the concept shown, each of the driver shafts 30A, 30B and 30C is in its driver position, in which the register pins each protrude beyond the side surface of the collecting cylinder 4. If the shafts 30A, 30B or 30C are rotated, as can be seen from FIG. 3, in the counterclockwise direction, they come into a release position in which the said register pins are drawn into the cylinder.

A control curve 31 for the control of the driver shafts has a generally circular shape with a control region 32 around its circumference. It is on that Frame 17 of the folder attached coaxially to the shaft 15. Each driver shaft extends into the vicinity of the control cam 31 and, for the purpose of interaction with it, has a lever 25 with a roller 26. In the shaft there is a torsion bar 27 which is rotatably connected to the shaft at its end, where the latter Lever 25 supports while at its other end the torsion bar is connected to the flange 18A via the anchoring base 28. The torsion bar is biased to produce a return moment which tends to rotate the shaft as seen in Fig. 3 or 4 in a counterclockwise direction so that an elastic force pushes the roller 26 onto the cam 31 presses, and this with an amplitude sufficient that the role spontaneously remains in constant contact with the control cam. That is, each of the shafts is automatically in the driver position when its role is opposite the circular portion of the cam 31 and in the release position when its role is opposite the control area 32.

The folding blades 12A, 12B and 12C are each carried by a shaft, namely 20A, 20B or 20C, which are rotatably arranged on the collecting cylinder 4, in the same way as the registration and register shaft on the bearings 21A ' and 21B '.

In the graphically illustrated configuration, each folding knife shaft 20A, 20B or 20C is in its retracted position where the knife carrying the shaft is retracted into the collecting cylinder 4, whereas when one of the shafts 20A, 20B or 20C is turned in the counterclockwise direction 3 and 4 rotates, as can be seen from FIGS. 3 and 4, the shaft comes into an engagement position in which the folding knife which carries it is extended, ie protrudes beyond the side surface of the collecting cylinder 4.

In the same way as for the driver shafts, a control cam 23 for driving the folding knife shafts, which has a generally circular shape with a control region 24 on its outer circumference, is fastened to the frame 17 coaxially with the shaft 15. The interplay between the folding knife shafts 20A, 20B, 20C and the control cam 23 takes place in a similar manner as in the interplay between the shafts 30A, 30B and 30C and the control cam 31, the devices which make this interplay possible on the drawings with the same reference numbers own, but with an A-dash.

Each of the shafts 20A, 20B and 20C is automatically in the retracted position when its roller 26 'is opposite the circular portion of the cam 23 and in the engaged position when its roller is opposite the control portion 24.

The control cams 23 and 31 are angularly arranged such that if a folding knife touches the jaw cylinder 5, for example the knife 12C, then the roller 26 'of the shaft carrying the blade, for example the shaft 20C, is opposite the control area 24 while the roller 26 of the preceding drive shaft, the shaft 30C in the same example, is located opposite the control area 32. Thus, when an engaging blade of the collecting cylinder 4 has arrived opposite a folding flap of the cylinder 5, it not only extends to hold the paper in the folding flap, but the register pins preceding it retract into the cylinders to hold the copy on both sides of the Release knife.

In the course of this automatic operation, each copy delivered by the collecting cylinder 4 is in this way and Transferred to the jaw cylinder 5, which corresponds to an operation in the form of a double production.

In order to give her the opportunity to work in the collection operation, the collection cylinder has 4 devices which will now be described below.

For each common shaft 30A, 30B and 30C, a latch, 33A, 33B and 33C, is secured on flange 18B near the shaft. Each of these latches is mounted parallel to the shaft to which it is associated and has a movable rod 34 on the inside of the flange 18B which is extended when the latch is in the rest position.

In order to cooperate with the movable rod of the bolt associated with it, each driver shaft has a projecting lever 35 near the inside of the flange 18B. When the bolt is in the rest position, the rod 34 cannot engage with the lever 35 of the shaft associated with it Come in contact, which is why the wave has the previously explained automatic behavior. If one of the bolts moves into the working position, then its rod 34 extends and arrives in front of the lever 35 of the shaft assigned to it when it is in the driving position. As long as the rod is extended, the rotation of the shaft in a counterclockwise direction is not possible - if you look at the shaft as shown in FIGS. 3 and 4 - because the rod blocks the lever in this sense. As a result, the shaft remains in the entrained position when its roller 26 is opposite the control area 32, as can be seen in FIGS. 3 and 4 with respect to the shaft 30C, where the bar of the latch 33C is extended in the configurations shown in these drawings is.

Likewise, each folder blade shaft 20A, 20B and 20C is connected to a movable bar latch 34 ', and 33A ', 33B' and 33C ', each of which shafts has a protruding lever 35' to cooperate with the bolt associated therewith in the same manner as the drive shafts with their respective bolts. It can thus be seen in Figs. 3 and 4 that the shaft 20C is in the retracted position even though its roller 26 'is opposite the control area 24 because the bar of the latch 33C' is extended.

This drive shaft and the folding knife shaft are thus equipped with a bolt which is positively connected to the cylinder and consequently enable a working position in which the shaft is blocked in order to prevent its role from going down into the control region of the cam. There is also the rest position, in which there is no influence on the shaft.

Numerous variants are possible, depending on the circumstances, with regard to the arrangement of the bolts on the cylinder. Thus, in the variant shown in FIG. 5, all of the bolts are arranged radially instead of their axial arrangement and attached to the flange 18B on the inside.

And in the variant shown in Fig. 6, each bolt is arranged to be axially movable, but the rod is movable on the outside of the flange 18B and does not cooperate with a special lever 35 or 35 'but with the roller support lever of the shaft which he is assigned.

As before, it is possible with bars provided with movable bars to arrange them radially and to have the bar cooperate with a simple radial hole made in the shaft. More generally, any type of bolt can be used that is able to block a shaft and react to a signal.

FIG. 7 shows an overall schematic view of the control system of the latches of the collecting cylinder 4.

The movable bar latches used here are each in the form of a single-acting compressed air latch that is returned to the rest position by spring force, so that each latch assumes its working position when pressurized while it is under pressure when the pressure escapes, returns to the rest position.

In order to make a pressure source available on the collecting cylinder 4, the central shaft 15 of this cylinder is hollow. The interior of the cylinder 36 is connected to the compressed air source 39 via a rotary coupling 37 (visible on the left in FIG. 2) and a line 38.

The bars of the collecting cylinder 4 are arranged in groups in the form of three pairs of measuring cells, each pair having the bar of a drive shaft and the bar of the following folding knife shaft (from the point of view of a stationary observer who is looking at the rotation of the cylinder), ie, 33A and 33A ', 33B and 33B', 33C and 33C ', and this by pneumatic connection with one and the same solenoid valve (switching protection), ie, 49A, 49B and 49C. Each of these solenoid valves is pneumatically connected in the interior 36 of the shaft 15 and enables a passage position and a pressure relief position. In the pressure relief position, each of the bolts of the associated measuring cell pair is under atmospheric pressure, ie the bolt is in the rest position, while in the open position each of the bolts is connected to the interior 36 of the shaft 15, ie is under pressure and is thus in the working position .

The solenoid valves 49A, 49B and 49C and thus also the associated bolt pairs react to the electrical signals that are generated by the signal organs 40.

These means have a connection terminal 43 which is connected to the terminal 41A of a power supply source 48 via an electrical changeover switch 42. The schematic representation of the means 40 has been simplified by only showing the three contactors 40A, 40B and 40C, which alternately establish and do not establish the contact between the terminal 43 and the output terminals 44A, 44B and 44C. If the contact between one of these output terminals and the terminal 43 is established and the switch 42 is closed or switched on, then this terminal is connected to the power supply source, and it can be assumed that a signal is present at this output terminal, while when this connection is made - or there is no power source, it can be assumed that no signal can be present at this terminal.

The output terminals of generator 40 are each connected to the solenoid valve that has the same suffix, and each solenoid valve is also connected to the second terminal 41B of the power supply 48 such that when a signal is applied to one of the terminals 44A, 44B or 44C, the bars with the same suffix are in the working position, whereas they are otherwise in the rest position.

In order to clarify the operating mode and to facilitate the elimination of a possible malfunction, light-emitting diodes 60A, 60B and 60C have been provided, each of which has a terminal connected to the second terminal of the power supply source 48, while the other terminal to the terminal 44A, 44B or 44C is connected.

A diode lights up when the bolts with the same suffix are in the working position; on the other hand, it has gone out when the bolts are in the rest position.

In order to connect the solenoid valves to the means 40 and to the terminal 41B of the power supply, an electrical rotary contact 45 has been provided, which has four rings 46A, 46B, 46C and 46D, which are positively connected to the cylinder and anchored to the stationary or firmly anchored Sliding contacts 47A, 47B, 47C or 47D are coupled.

The sliding contacts 47A, 47B and 47C are connected to the terminals 44A, 44B and 44C of the generator 40 and the sliding contact 47D to the second terminal 41B of the power supply source 48; in contrast, each solenoid valve is connected to a common ring 46D and to the ring which has the same suffix as the valve.

In a variant that is not shown graphically here, instead of a compressed air cylinder, each bolt is a solenoid valve with a plunger, which is returned to the rest position by spring force, while the pneumatic part of the control system is replaced by its electrical equivalent.

In addition to the contactors 40A, 40B and 40C, which are shown schematically in FIG. 7, the means for generating the signals 40 (see FIGS. 2 and 8) have a pinion 50, which is positively connected to the central shaft 15 of the cylinders, a wheel 51 which is rotatably mounted about an axis, which in turn is non-positively connected to the frame 17 of the folder, and has a diameter which corresponds to twice the diameter of the pinion 50 and interacts with it; in addition there is a section 52 which is positively connected to the wheel 51, and a complex of three stationary measuring cells 53A, 53B and 53C, which are coupled to the frame 17 and arranged opposite the wheel, are angularly offset from one another by 120 °. In addition there are devices which, if a measuring cell is opposite the section, cause the protection 40A, 40B or 40C to be closed with the same suffix, whereas it is otherwise open.

The nature of the section 52, the measuring cells 53A, 53B and 53C as well as the devices which cause the measuring cells to act on the contactors are generally known and, as a result, need not be described further.

Taking into account the branches or connections which have been described above, it is the case that when a measuring cell faces section 52, the bar of the folding knife and the bar of the register or dowel pins, which have the same suffix, are in one another Work position while they are otherwise in the rest position. Thus, in the conception shown in FIG. 8, the section 52 is opposite the measuring cell 53C and not the measuring cells 53A and 53B, the latch of the knife 12C and that of the register pins 11C in the working position and the others in the rest position.

The section 52 has such an opening and such an angular position that if the measuring cell of a folding knife has to be opposite the section, as soon as the knife touches the jaw cylinders 5, the section has faced these measuring cells, just before the rollers 26 and 26 'of the respectively assigned shafts of the control area lie opposite their control curve. In contrast to this, the section is no longer opposite the measuring cell when these rollers have moved beyond the control area.

As a result, if a folding knife is tangent to the jaw cylinder 5 and its measuring cell is opposite to the section 52, then the paper covering this folding knife is not transferred to the folding jaw cylinder 5, while the paper is transferred if the measuring cell is not opposite the section.

At the tangent point of the cylinders 4 and 5, the sequence of the folding knives 12C, 12B, 12A etc. is such that the sequence of the corresponding measuring cells at the tangent point is 53C, 53B, 53A etc.

As can be seen from FIGS. 2 and 8, these measuring cells were arranged in such a way that their succession takes place in the opposite direction to the direction of rotation of section 52.

In addition, and given the ratio of the diameter values of the pinion 50 and the wheel 51, the section rotates at half speed in relation to the collecting cylinder 4.

Thus, when a folding knife has replaced the knife that preceded it, i.e. that is, when the accumulator cylinder 4 has moved 1/3 turn, the section 52 has moved 1/6 turn. And since within the same time the corresponding measuring cell is the cell that is at a position that is a 1/3 turn in the opposite sense, the corresponding measuring cell and the section have 1/6 + 1/3 turn apart, d. i.e., offset by 1/2 turn from each other.

It follows that if the measuring cell of a folding knife is opposite the section, as soon as this knife touches the folding jaw cylinder 5, the measuring cell of the blade which follow it in the same position, do not, and so on, so that when the paper covering the first blade is transferred and the paper covering the following blade is not transferred, etc., the cylinder therefore works in the collective mode.

The selector switch 42 is used to select the operating mode of the folder.

In the open position, the means 40 are not supplied with electricity; no signal is generated, the locks are in the rest position; the driver shafts and the folding knives keep in the automatic mode of operation which has been described above and corresponds to the "double production" mode.

Table I at the end of the present description explains this operating mode and shows which copies are transferred to which jaw of the jaw cylinder 5, the jaws being identified by their suffixes and the order of the copy by an index and, for example, B3 the name of the third copy B is.

If, as shown, the first copy being transferred is copy A, and if it has been transferred to folder 13A, then that folder and folder 13C always receives copy A, while folders 13B and 13D always have a copy B received.

The copy A transferred into the folding jaw 13A reaches the lower angular fold 7B after it has been transferred from the clamp 14B '. The copy A, which has been transferred to the folding flap 13C, likewise arrives at the lower angular fold 7B after it has been transferred from the clamp 14A '.

In contrast, copies B, which are contained in the folding flaps 13B and 13D and which were respectively transmitted from the clamps 14A and 14B, are output on the upper angular fold 7A.

If the changeover switch 42 is closed, it has been seen that the collecting cylinder 4 works in the collecting mode.

Table II is similar to Table I, but shows the collection mode, with the slashed-through copies being those that have not been transferred.

Copy A1 has not been transferred, but copy B1; copy A2 has not been transferred; the group, formed from copy A1 remaining during the previous operation and copy B2, which has just superimposed the former, is transferred, with the result that production remains stable in the following: the jaws 13A and 13C receive nothing, while with each contact the jaws get nothing 13B and 13D receive a group of copies A and B, copy A being in copy B.

We are therefore dealing with specimens with a double pagination, i.e. that is, with copies accumulated or collected in the jaws 13B and 13D, which are now transported via the clamps 14A and 14B of the cylinders 6A in the direction of the upper angular fold 7A.

A variant of the devices or means for generating signals will now be described below, which, by simply actuating a switch, enables the copy groups to be placed on the angular fold 7B instead of 7A within the same configuration.

In this variant, the means for generating the signals also have, as can be seen in FIG. 9, a second group with three measuring cells 54A, 54B and 54C which are offset by 180 ° with respect to group 53A, 53B and 53C, ie that the two measuring cells, which have the same suffix, are diametrically opposite to each other; 10 has six input terminals 56A, 56B, 56C, 57A, 57B, 57C, which are connected to the measuring cells 53A, 53B and 53C, 54A, 54B and 54C and three output terminals 58A, 58B and 58C.

In the position shown, these output terminals are connected to the measuring cells 53A, 53B and 53C, so that the cylinder, as explained above, operates in the collecting mode, i.e. that is, in accordance with Table II. In the other switch position of the switch, which is obtained by moving the common control 59 to the right in the drawing, the measuring cells 54A, 54B and 54C are replaced by the measuring cells 53A, 53B and 53C , and the signals applied to terminals 44A, 44B and 44C are in antiphase mode; d. that is, the jaws 13A and 13C receive the group of the two copies, and the jaws 13B and 13D receive nothing, so that all copy groups can be gripped by the cylinder 6B and then deposited on the angular fold 7B.

In addition, it is copies B that are arranged in copies A and no longer vice versa.

The means for generating the signals so far described with respect to the collecting cylinders 4 generate a series of signals for each pair of bartacks, which comprises a first bartack associated with a folding knife shaft and a second bartack associated with a follower roller, the former precedes, the signals generated so are adapted so that the paper covering a first folder is not transferred to the jaw cylinders, while on the other hand the paper covering a second folder following the first folder is transferred, etc.

Numerous variants are possible. In particular, depending on the circumstances, a rotary measuring cell and numerical devices can be used to generate these three rows of signals depending on the data supplied by the rotating measuring cell.

The cylinder on which the invention is based, when used in conjunction with a printed paper web in two sequences, can also be realized not only with three folding knives, but with five or seven folding knives or even with even more folding knives in an odd number, each of which has all of this is associated with what is associated with each of the folding blades in the immediately preceding examples, i.e. that is, not only that which is specific to each knife (engagement shaft, bolt, possibly measuring cell, ..), but also a driving element with what is characteristic of this agent and a folding knife.

The cylinder 104 shown in FIG. 12 has five folding blades 110A, 110B, 110C, 110D and 110E, five driving elements 111A, 111B, 111C, 111D, 111E and five folding blades 112A, 112B, 112C, 112D and 112E.

The control system of the driving elements and the folding knife is similar to the system shown in FIGS. 2 to 10, but in the five instead of the three sequence.

In the dual production mode, the cylinder 104 operates in a similar manner to the collecting cylinder 4, that is, in accordance with Table I which is at the end of the present description.

Table III shows the mode of operation of cylinder 104 in the collection mode in a manner similar to Table II. Copy A1 remained on the cylinder, copy B1 was transported, copy A2 remained on the cylinder, copy B2 was transported, copy A3 remained on the cylinder, copy A1 which was retained during the previous rotation, and that Copy B3, which has just covered this, are transferred to the jaw cylinder 5; with which the production remains stable in the following. The jaws 13A and 13C receive nothing, while the jaws 13B and 13D receive a copy group A and B with each contact.

We thus obtain a result similar to that of collecting cylinder 4, and in general everything that has been said with regard to the cylinders with three folding knives can also be applied to the cylinders with five or seven folding knives or their more in odd numbers if the Cylinders with a printed paper web can be used in two sequences.

In another variant, the cylinder with five folding knives can be driven not only with a printed paper web in a double sequence, but also in a triple sequence, i.e. with a regular sequence of copies A, B and C, the control device with which the cylinder is equipped in this variant, is adapted so that it controls the cylinder either in multiple production (double or triple production) or in the collection of two copies of two copies or in the collection of two copies of three copies each.

Table IV shows the operation of the cylinder in accordance with this variant, in triplicate production mode, i.e. that is, when the changeover switch corresponding to the changeover switch 42 is opened.

The folder 13A receives a copy A, then a copy B, then a copy C, etc., with respect to the folder 13A being offset by one copy for the folder 13B and two copies for the folder 13C and three copies on the jaw 13D.

As for the collection modes, the means for generating the signals are similar to those shown in Figs. 2, 7 and 8 in the fifth sequence instead of the three sequence, but in addition to the pinion, they have the wheel and the section corresponding to elements 50, 51 and 52, a second pinion, a second wheel, a second section and a second group of measuring cells. These various elements are shown in FIG. 12.

The wheel 60 and the pinion, not shown, have such diameter values that the section rotates at one third of the speed in relation to the cylinder. A pair of stationary measuring cells are provided for each folding knife, namely 61A and 61A ', 61B and 61B', 61C and 61C ', 61D and 61D' and 61E and 61E '. The measuring cells of each pair of measuring cells, e.g. B. 61A and 61A ', are offset by 240 ° to each other, while the measuring cell pairs are angularly and regularly arranged with respect to the course of section 62, i. that is, they are offset by 72 ° in the example in which five knives or blades are shown.

The switch for the bulk amount 63, which is shown in Fig. 13, has six input terminals, 64A to 64E and 65A to 65E and five output terminals, 66A to 66E. Terminals 64A to 64E are connected to the measuring cells described above, which are used for the double collection of specimens, while terminals 65A to 65E are each connected to the two measuring cells of the corresponding pairs of measuring cells; for example, the terminal 65A is connected to the measuring cells 61A and 61A '. The output terminals 66A to 66E are connected to the means for generating the signals corresponding to the means 40.

In the position shown, these means are thus connected to the measuring cells shown in FIG. 12 in such a way that each folding knife does not extend if one of the two measuring cells of the pair of measuring cells which bears the same suffix is opposite section 62. For example, the knife 112A does not extend, neither when the measuring cell 61A is opposite the section 62, nor when this is the case with regard to the measuring cell 61A '.

It can thus be seen that the means shown in Fig. 12 open up the possibility of triple accumulation of specimens.

The switch 63 enables the selection of the collective amount. In the position shown, there is an accumulation of three copies each, while in the other position of the switch, which is obtained when the common control 67 is moved to the right in the figure, there is an accumulation of two copies each.

If one works in the collection mode, one not only operates the changeover switch corresponding to the changeover switch 42 of FIG. 7, but one switches the collection quantity changeover switch to the collection position for two copies each, with one printed Paper web in duplicate, and on the collecting position for three copies each, if the paper web is processed three times.

In connection with Table III, it has already been seen how the operation is carried out in the collection mode of two copies each.

Table V shows the mode of operation in the collective mode of three copies each. Copies A1 and then B1 were retained, copy C1 was transferred to the jaw cylinders; copy A2 was retained and then copy B2; copy A1, which was retained during the previous operation, and copy C2, which has just covered it, are transferred to the jaw cylinder 5; copy B1, which was retained during the previous operation, and copy A3, which has just covered it, are retained; copy B3 is retained, copy A2 that has been retained during the previous operation and copy C3 that has just covered it are transferred to the jaw cylinder 5; copy B2 that was retained during the previous operation and copy A4 that has just covered it are retained; copy B4 is retained, the group of three copies, formed from copy B1, which was retained two work steps before and then covered with copy A3 during the subsequent run, which in turn is now covered by copy C4, is transferred or transported, with which the operating mode remains stable in the following:
One of every three jaws of the jaw cylinder 5 receives a group of three copies, while the other jaws receive nothing.

In the example shown, the copy C is covered by the copy A, which in turn is covered by the copy B, but if you move the printed orbit by one copy, to the right in the sense of Table V, you now get in the same order B, C and A, and if you move two copies, you get A, B and C.

In one variant, the jaw cylinder 5 can be replaced by a cylinder with six jaws, and in this case it is always the same two jaws that cover the group of three copies.

• entweder das Papier, das ein erstes Falzmesser überdeckt, nicht auf den Falzklappenzylinder übertragen wird, während das Papier, das ein zweites, dem ersten Messer folgendes Falzmesser bedeckt, auf den besagten Zylinder transportiert wird, usw.;
• oder das Papier, das ein erstes Falzmesser bedeckt, nicht auf den Falzklappenzylinder übertragen wird und das Papier, das ein zweites, dem ersten Messer folgendes Falzmesser abdeckt, gleichfalls nicht übertragen wird, wohingegen das Papier, das ein drittes, dem zweiten Messer folgendes Falzmesser abdeckt, auf den besagte Zylinder übertragen wird, usw.

In the embodiment just described with regard to the means for generating signals in a cylinder with five folding knives, which can work either in the collecting mode for two copies or in the collecting mode for three copies, the means for triggering the signals generate a series of signals for each bolt pair, which is composed of a first bolt assigned to a folding knife shaft and a second bolt assigned to the preceding driver shaft, a collective quantity switch is provided, depending on the position of which the signals generated are aligned such that:

• either the paper covering a first folding knife is not transferred to the jaw cylinder while the paper covering a second folding knife following the first knife is transported onto said cylinder, etc .;
• or the paper covering a first folding knife is not transferred to the jaw cylinder and the paper covering a second folding knife following the first knife is also not transferred, whereas the paper covering a third following the second knife Covers folding knife to which said cylinder is transferred, etc.

Numerous variants are possible. Depending on the circumstances, a rotary measuring cell and numerical means can be used in particular to generate the five signal series depending on the data supplied by the rotating measuring cell.

In particular, it should be noted that it is possible to transfer everything that has been said with regard to cylinders 104 to cylinders with seven folding blades, and in particular to the variant in which both the collection in the form of two and a collection in the form of three copies can also be carried out.

In addition, it is possible in a variant of the cylinder 104 with regard to the generation of the signals provided for the bolts, to provide only the means which have been explained in connection with FIG. 12 if one wishes to use the system only according to the criterion to drive the collection in the form of three copies each.

In such a case, cylinders with two, four or seven folding knives can also be used, in which two, four or seven angular, but regularly distributed pairs of measuring cells are provided, the measuring cells of each measuring cell pair being offset by 240 ° to one another.

Of course, the present invention is not limited to the exemplary embodiments described and illustrated above; rather, it encompasses all variants which can be designed by a person skilled in the art.

The collecting cylinders on which the invention is based are also within the scope of those described here Versions of folders can be used, in particular for folders with a turnstile or hypocycloidal function, as well as folders with variable cuts, jaw folding machines, without register or dowel pins, but with clamps of the type used in the gravure printing process.

Claims (20)

1. Collecting cylinder for a folding machine of a printing machine, which folding machine has the following elements:

   - there are tucking blades, to each of which a conveyor device and a tucking blade countermember are assigned;

   - there is an apparatus for controlling the tucking blades and the conveyor device;

   - for each tucking blade, a tucking blade shaft (20A, 20B, 20C) is provided which has, on the one hand, a position in which the blade is extended in order to insert the paper covering the tucking blade into a folding jaw (13A, 13B, 13C, 13D) of a folding jaw cylinder (5) which interacts with the collecting cylinder, and, on the other hand, a retraction position in which the blade is retracted;

   - a stationary control cam (23) is provided for controlling the tucking blade shafts, having a control region on the outer circumference of the control cam, each tucking blade shaft having a lever (25') which, in turn, bears a roller (26') held elastically against said control cam; each tucking blade shaft being in the engagement position when its roller is in the control region, the tucking blade shaft otherwise being in the return position; in this case, the control cam is arranged in such a way that its control region (24) is situated opposite the roller (26) of a tucking blade shaft when the blade assigned to this shaft is opposite a folding jaw of the folding jaw cylinder;

   - for each conveyor device a conveyor shaft (30A, 30B, 30C) is provided which allows a conveying position, in which the paper is retained on the cylinder, and a release position, in which the paper is released;

   - a stationary control cam (31) is provided for controlling the conveyor shafts, having a control region (32) on the outer circumference of the control cam, each conveyor shaft having a lever (25) which bears a roller (26) resting elastically on said control cam; each conveyor shaft being in the release position when its roller is in the control region, the conveyor shaft otherwise being in the conveying position, said control cam being arranged in such a way that its control region (32) is situated opposite the roller of a conveyor shaft when the tucking blade, which is arranged upstream of the conveyor device assigned to this conveyor shaft, is opposite a folding jaw of the folding jaw cylinder,

   characterised by the following features according to the invention:

   - each conveyor shaft and each tucking blade shaft has a latch (33A, 33B, 33C, 33A', 33B', 33C') which is connected positively to the cylinder and can, on the one hand, assume an operating position, in which the latch blocks the shaft in order to prevent the roller (26, 26') of the shaft from slipping into the control region (24, 32) of the control cam (23, 31), and, on the other hand, a position of rest, in which the latch does not act on said shaft;

   - a device (40) is provided for generating signals destined for the latch in order to generate at least one series of periodic signals in dependence on the angular position of the cylinder in order thus to control the cylinder in the collecting mode;

   - devices (45, 49A, 49B, 49C) are provided which cause the latch to respond to said signals, each latch assuming said operating position when a signal is assigned to the latch, otherwise, however, assuming said position of rest;

   - a device (42) for selecting the mode of operation of the cylinder is provided which supplies the latch with appropriate signals.
2. Collecting cylinder according to Claim 1, characterised in that said selection device is an electrical switch (42) which is arranged between said devices for generating signals (40) and a source of electricity (48) supplying power to said devices.
3. Collecting cylinder according to Claim 1 or 2, characterised in that said devices for triggering the response of the latches have an electrical rotary contact (45) which has a ring (46A, 46B, 46C) for each series of signals generated by said devices, which ring is connected positively to the cylinder and is coupled directly or indirectly to each latch, for which the series of signals is destined, and a stationary sliding contact (47A, 47B, 47C) which is coupled to the devices for generating signals.
4. Collecting cylinder according to Claim 3, characterised in that this cylinder has a central hollow shaft (15), the interior (36) of which is coupled to a source of compressed air via a rotary coupling (37), in that each latch is constructed as a compressed-air latch, and in that said device for triggering the response of the latches has at least one solenoid valve (49A, 49B, 49C) which is connected positively to the cylinder and coupled electrically to said ring of the rotary contact and pneumatically to at least one latch and to said interior of the central hollow shaft, said solenoid valve setting the latch in the release position as long as no signal is present, whereas it couples the latch to said interior of the hollow shaft when a signal is present.
5. Collecting cylinder according to one of Claims 1 to 4, characterised in that each of said latches has a movable rod (34, 34') which is extended in said operating position and retracted in said position of rest.
6. Collecting cylinder according to Claim 5, characterised in that each conveyor shaft and each tucking blade shaft has a lever (35, 35') which projects and on which the rod of the assigned latch acts.
7. Collecting cylinder according to Claim 5 or 6, characterised in that each of said latches is a single-acting operating cylinder which is withdrawn by spring force into said position of rest.
8. Collecting cylinder according to Claim 5 or 6, characterised in that each of said latches is a solenoid with a plunger which is returned by spring force to said position of rest.
9. Collecting cylinder according to any of Claims 1 to 8, characterised in that each of said latches is mounted in a flange (18B) assigned to it of the collecting cylinder in the vicinity of the shaft.
10. Collecting cylinder according to Claim 1 to 8, characterised in that this cylinder has an uneven number of tucking blades, but at least three tucking blades (12A, 12B, 12C; 112A, 112B, 112C, 112D, 112E) and in that said control apparatus is constructed in such a way that the cylinder operates with an unwinding of format lengths either in the form of a double production or of a collection production of two copies.
11. Collecting cylinder according to Claim 10, characterised in that said devices (40) for generating signals generate a series of signals for each pair of latches (33A, 33A'; 33B, 33B'; 33C, 33C'), each pair of latches having a first latch, which is assigned to a tucking blade shaft, and a second latch, which is assigned to the conveyor shaft arranged upstream of the tucking blade shaft; the generated signals being provided in such a way that the paper which covers a first tucking blade is not transferred to the folding jaw cylinder whereas the paper which covers a second tucking blade following the first is transferred to said cylinder, etc.
12. Collecting cylinder according to Claim 11, characterised in that said devices for generating signals have a portion (52), which rotates at half the speed in relation to the collecting cylinder, a stationary measuring cell (53A, 53B, 53C) for each tucking blade, these measuring cells being arranged at angles, but regularly in relation to the circumferential path of the portion, and a device for generating a series of signals for each measuring cell, a signal being generated when a measuring cell is situated opposite the portion and otherwise no signal being generated.
13. Collecting cylinder according to Claim 12, characterised in that, furthermore, said devices for generating signals comprise a second stationary measuring cell (54A, 54B, 54C) for each tucking blade, which measuring cell is offset by 180° in relation to the aforementioned measuring cell (53A, 53B, 53C), and a selector switch (55) so that said signals are generated either for said first measuring cells or for said second measuring cells.
14. Collecting cylinder according to any of Claims 1 to 9, characterised in that said control apparatus is constructed in such a way that the cylinder operates with an unwinding of three format lengths either in the form of a triple production or a collection production of three copies, the cylinder having a corresponding number of tucking blades, thus, in particular, two, four, five or seven blades.
15. Collecting cylinder according to Claim 14, characterised in that said devices for generating signals generate a series of signals for each pair of latches which, in turn, is composed of a first latch, assigned to a tucking blade shaft, and a second latch which is assigned to a conveyor shaft arranged upstream, the generated signals being provided in such a way that the paper which covers a first tucking blade is not transferred to the folding jaw cylinder, just as the paper which covers a second tucking blade following the first is also likewise not transferred, whereas the paper which covers a third tucking blade following the second is transferred to said folding jaw cylinder, etc.
16. Collecting cylinder according to Claim 15, characterised in that said devices for generating signals comprise the following: a portion (62), which rotates at a third of the speed in relation to the collecting cylinder, a stationary pair of measuring cells (61A, 61A'; 61B, 61B'; 61C, 61C'; 61D, 61D'; 61E, 61E') for each tucking blade (111A, 111B, 111C, 111D, 111E), the measuring cells of each pair of measuring cells being arranged at a distance of 240° from one another; the pairs of measuring cells being arranged at angles, but regularly in relation to the circumferential path of the portion; and a device for generating a series of signals for each measuring cell, a signal being generated when a measuring cell is situated opposite a portion and no signal being generated when this is not the case.
17. Collecting cylinder according to any of Claims 1 to 9, characterised in that said control apparatus is constructed in such a way that the cylinder (104) operates with an unwinding of two or three format lengths either in the form of a multiple production or a collection production of two copies or a collection production of three copies, the cylinder having for this purpose an adequate number of tucking blades, thus, in particular, five or seven blades.
18. Collecting cylinder according to Claim 17, characterised in that said devices for generating signals generate a series of signals for each pair of latches, each of these pairs of latches comprising a first latch, which is assigned to a tucking blade shaft, and a second latch which is assigned to the upstream conveyor shaft, and a collection quantity switch (63), in dependence on the position of which the generated signals are provided in such a way that:
    either the paper which covers a first tucking blade is not transferred to the folding jaw cylinder, whereas the paper which covers a second tucking blade following the first is transferred, etc.
    or the paper which covers a first tucking blade is not transferred to the folding jaw cylinder, just as the paper which covers a second tucking blade following the first is also likewise not transferred, whereas the paper which covers a third tucking blade following the second is transferred to said cylinder, etc.
19. Collecting cylinder according to Claim 18, characterised in that said devices for generating signals comprise the following:

    - a first portion, which rotates at half the speed in relation to the collecting cylinder, and a first stationary measuring cell for each tucking blade, said measuring cells being arranged at angles, but regularly in relation to the circumferential path of the first portion;

    - a second portion (62), which rotates at a third of the speed in relation to the collecting cylinder, and a second stationary pair of measuring cells (61A, 61A'; 61B, 61B'; 61C, 61C'; 61D, 61D'; 61E, 61E') for each tucking blade (111A, 111B, 111C, 111D, 111E), the measuring cells of each pair of measuring cells being offset by 240° relative to one another, the second pairs of measuring cells being arranged at angles, but regularly in relation to the circumferential path of the second portion.
20. Collecting cylinder according to Claim 19, characterised in that a device for generating a series of signals is provided, specifically either for said first or for said second pairs of measuring cells, in dependence on the position of said collection quantity switch (63), a signal being generated when a measuring cell is situated opposite the respective portion and no signal being generated when this is not the case.

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