EP3482892A2 - Equipment for carrying out cutting operations for open format edges of a printed product - Google Patents

Abstract

The invention relates to a device for carrying out cutting operations on at least one open format edge of at least one printed product, the device being in operative connection with a print product-related delivery device for the first cutting operation and with a print product related delivery device operating after the last cutting operation. The printed product (A) can be transferred from a first (1) to a second (2) and to a third cutting location (3) for the edge-related cutting operation, the transfer of the printed product along a guide path from one cutting location to the next with at least one transport unit ( 101, 102, ....) takes place, and wherein the transport unit is provided with at least one means by which the printed product is detected on the back side, and conveys it from one cutting location to the next suspended. The edge-related cutting operation on at least one by at least one cutting tool (150a, 150b, 150c) at at least one cutting location (1, 2, 3) is performed by a cutting operation optionally supplemented by initiating at least a second subsequent edge-related cutting operation.

Description

Technical area

The present invention relates to a device for performing cutting operations open format edges of at least one printed product, namely for the trimming of at least one head, front, foot edge according to the preamble of claim 1, such as from WO2016 / 168945 A1 evident.

The term "open format edges" is thus understood to mean head, front and foot parts of the printed product, regardless of whether this is composed of individual pages or signatures.

For the industrial production of printed products, preferably book blocks or brochures, in small or small editions, one operates with a so-called three-knife trimmer, which is able to follow the same or variable formats and thicknesses with high cycle performance with the highest quality cut to the desired To cut formats.

At three cutting stations, the book blocks or brochures are cut to final size at the top, bottom and front of the unit for a given thickness. The book blocks or brochures are bound on the back. Suitable bindings are all known methods, such as; Thread stitching, perfect binding, saddle stitching, etc.

The three-knife trimmer can be used both as a solo machine and as a machine in a line network with other production machines.

State of the art

The task of the device, hereafter referred to as a three-knife trimmer, is to cut the printed products, ie mostly book blocks and / or brochures, at the three open sides. This is done by clamping the book block or booklet (hereafter referred to as the book block) at a standstill between press bars or press plates, and using three cutters, the three above-mentioned pages of the book block are trimmed. The cutting devices may be formed as counter-knife units in which two blades cut as a pair of scissors or knife units with cutting strips in which a knife cuts against a solid plastic strip, whereby the knife edge easily penetrates into the plastic strip in the end position for protection.

In such trimmers, the head and foot incision is usually trimmed in a first phase and the front incision in a second phase. The order is not mandatory, it can also be done the other way round. Furthermore, it is possible to perform on the book block only the head and foot section or only the front section, which is needed for example for the production of English brochures.

There are three-cutter designs in which the book block stops between the first cut phase (e.g., head and foot cut) and the second cut phase (e.g., front cut), and there are designs where the book block is transported between cut phases.

There have also been known three-knife trimmers in which the book blocks are pressed for cutting between press dies and cutting cassettes and held for the cutting operation (s). When the press die is raised, the cut book block is ejected and the book block to be re-cut brought in. By means of a centering device, the book block is brought into position and then clamped by the lowering pressing ram. The knives move in a swinging motion against the book and cut the open sides. After cutting all sides of the punch is raised and the next cycle can begin. However, this three-cutter version is not suitable for a quick format change. The punch and the cutting cartridge are tailored to the format to be processed and thus can only be replaced by stopping the machine.

In the DE102011105253 A1 discloses a three-knife trimmer, in which the blades cut against cutting edges or counter blade, the book block is held at head and Fußschnitt and the front section by pressure strips next to the knives. In the format-dependent variable free space between the cutting bars, or counter knives on the one hand and the space between the pressure bars on the other hand, a plurality of zigzag-shaped support webs for supporting the book block is arranged during cutting. With such a three-knife trimmer, a good cut quality can be achieved because the book block is pressed or supported with the pressure bars and the zigzag-shaped support webs during cutting.

However, with this solution, it should be remembered that the book block can attach to the zigzag-shaped support webs during insertion and removal in the cutting position. This circumstance will be added DE102011105253 A1 counteracted by the transport system consists of a lower belt and a top belt, the two belts for the book block transport against each other are driven together slightly so that the book block can not attach to the support webs of the cutting table level or the press level. With such a book block transport, however, it follows that with different book block thicknesses only one book block can be transported in the transport system. This limits the allowable thickness difference from book block to book block because there are several book blocks in the transport system. Especially for trimmers, where the cut is made in two stations, transporting the thickly varying book block with the described transport system is problematic. With greatly varying book block thicknesses, it is therefore necessary to transport only one book block within the transport system. However, this limits the capacity of such a three-knife trimmer, ie the three-knife trimmer can only be operated with a low number of cycles (power).

In the DE102011105253 A1 are further three knives listed that define the state of the art. However, all of them are not able to meet the requirements for a short changeover time associated with the requirement of a high quality cut.

In EP1504860 A1 a three-knife trimmer is disclosed in which the book blocks to be trimmed are detected by a positioning device and fed to the cutting devices with a feed device. There are a plurality of spaced-apart cutting devices are provided, in which the book block are positioned by the delivery device successively each for a side section. In each cutter, a side cut is made on the positioned print product. From the positioning device, the aligned book blocks are moved with an intake gripper by a linear stroke in a transition position, wherein the orientation of the book block is not changed. The delivery of the book blocks is done with a multiple planetary gear. For positioning of the book blocks in the cutting devices adjustable control gates are provided. The device allows easy and quick changeover to other formats. Each cutting device consists of a frame-fixed lower blade and a top blade to which a press plate is coupled via a guide and a pneumatic cylinder. The press plate clamps the book block before cutting between the press plate and the stationary lower knife. The book block is not a large area, but only in the cutting area pressed by the press plate and the lower blade, and the feed device. The areas of the book block that are not pressed tend to be to "sag" and therefore may lead to insufficient cut quality. This is especially the case when the book blocks are made of soft and / or thin paper.

With the JP2012-218114 A A three-knife trimmer is introduced, which can process different book formats in the sequence and in which the outer sides of the book are not damaged. On a moving part, a gripping unit for gripping the back of the printed product is mounted, the gripping unit having a reference surface for positioning the spine of the printed product. With a Positionieraktuator the moving member is moved by a controller in a vertical plane and positioned correctly for the cutting operations on the three open sides of the printed product, so that the, moving in the horizontal direction, cutting knife can cut the printed product. At the reference surface of the chuck and a vertical abutment surface, the printed product is aligned, thereby enabling the controller, together with the format data, to approach the positions required for the respective cut and to properly position the printed product for the cut.

A disadvantage of this latter three-knife trimmer is the limited ability to vary the book format. Due to the fact that one clamping unit holds the printed product for all three sections, the clamping unit has to be designed substantially smaller than the smallest printed product to be processed. If the printed product has a much larger format, then the plates, which are additionally used to support the printed product during cutting, must be provided with a large area of exception. A large exception, however, has a detrimental effect on the quality of cut.

For the front section, the clamping unit can dive more or less deeply into the exception area of the plates. The printed matter is properly supported only when the chuck unit is inserted deeply into the exception area of the plates is. In order for the printed product, without replacement of the plates, can be sufficiently supported, only a small difference in bookbord width is editable with the three-knife trimmer.

Out WO2016 / 168945 A1 there is provided means for performing cutting operations on at least one open form edge of at least one printed product, the apparatus being operatively associated with a print product related delivery device for the first cutting operation and a print product related delivery device operating after the last cutting operation. Each edge-related cutting operation is performed with at least one cutting device. The print product is transferable from a first cutting location in which the cutting operation for a first form edge of the printed product takes place to a second cutting location in which the cutting operation for a second form edge takes place. The print product is transferable after the cutting operation has been performed at the second cutting location to a third cutting location in which the cutting operation for a third form edge takes place. The transfer of the printed product from one cutting location to the next is carried out by at least one transport unit, wherein the transport unit has at least one means, which detects the printed product on the back side and conveys it from one cutting location to the next hanging.

Presentation of the invention

The present invention is based on the object to provide a trained as a three-knife device; A further object of the present invention is to describe a method for operating such a device designed as a three-knife trimmer. The object of the invention is therefore to be able to with high cutting performance and quality of cut, continuously printing products of the same or different formats and Thickness to process, so by definition cut to format. The inventive three-knife trimmer and its operation are also suitable for trimming stacked brochures according to the same procedure as is the case with a book block.

The three-knife trimmer is therefore used for the trimming of open format edges, also called side edges of the printed products, such as books, brochures, magazines used, wherein for the sake of simplicity predominantly the terms "printed product", selectively "book block" or "booklet" are used below ,

By means of the three-knife trimmer according to the invention, reliable processing of very small runs up to the minimum number of pieces 1 can be realized without having to provide stoppages due to a changeover from one to the next format. Thus, the three-cutter can be supplied with book block formats of different sizes and / or the production of book blocks can be processed by different sections to be cut off at the edges.

In accordance with the invention, the invention is accomplished by an apparatus in which the print product is transferred from a first cutting location in which the first side cutting operation occurs to a second cutting location in which the second side cutting operation takes place, the printing product following the cutting operation performed at the second cutting location is supplied to a third cutting location in which the cutting operation for a third side edge takes place, and that the transfer of the printed product from one cutting location to the next is accomplished by at least one transport unit.

In order to keep the economy of the inventive three-knife trimmer high, the format change takes place in the course of the machine, preferably during the period of time available for the infeed and outfeed of the printed product.

The conversion from one format to the next has to be made with mass accuracy, so that each of the cut print products meets the requirements for dimensional accuracy.

After the inventive three-knife trimmer can be used even with a run of a printed copy, the goal of the trimmer according to the invention must be seen in the fact that the copy only once available is cut 100% reliable.

Another significant advantage of the invention is the fact that the three-knife trimmer is simple in design and reliable, so that its operation can be done even by auxiliary personnel.

By the inventive three-cutter is ensured that the dimensional accuracy of the cut printed product and its straight, parallel and rectangular cuts are guaranteed against the front and back surface of each printed product.

The inventive three-knife trimmer thus ensures a high quality of cut even with larger print product thicknesses by the printed product is maximized over the entire surface by at least one pressing device between the first and last page clamped, during which the cutting operations at the upcoming open side edges, so that in this cutting operation the risk of quality-reducing "nose" in the cut book block can be excluded. The full-surface detection of the printed product can be achieved if required by a plurality of press plates or recordable by segmented press plates or individually operable pressing elements.

In this case, the printed products are lying, with the binding processed back ahead and fed with approximately the same pitch via a conveyor belt to the three-knife trimmer. The approximately uniform pitch is given either by a clocked supply of the printed products to the conveyor belt of the three-knife trimmer, or such feeding is produced by known devices and methods in front of the conveyor belt.

In another embodiment, the printed products with an irregular pitch are fed to the conveyor belt of the three-knife trimmer. A timing device ensures that minimum pitches (distance between the leading book spine edge and the spine edge of the subsequent product are not undershot.) A sensor detects when the printed product arrives at the conveyor belt of the three-knife trimmer.

If the spacing between the printed products is greater than the minimum spacing, it may be provided as the first preferred variant that the printed products located within the three-cutter process are finished, and then the infeed is resumed. As a further option, it can be provided that the control reduces the speed of the three-knife trimmer and synchronizes the three-knife trimmer to the cycle of the printed product. If the division then exceeds a maximum dimension, then it can also be optionally provided that the controller generates empty cycles on the three-knife trimmer.

• i) Übernahme des Druckproduktes durch den Greifer des Supports nach Abschluss der ersten Schneidoperation am ersten Schneidort; ii) Überführung dieses Druckproduktes durch den gleichen Support/Greifer zu dem zweiten Schneidort nach erfolgter Schneidoperation am ersten Schneidort; iii) Überführung dieses Druckproduktes durch den gleichen Support/Greifer zu dem dritten Schneidort für die dritte Schneidoperation nach erfolgter Schneidoperation am zweiten Schneidort; und danach iv) Zurückfahren des Supports/Greifers in die Ausgangsposition am ersten Schneidort für eine erneute Übernahme eines nachgelieferten Druckproduktes, nachdem die erste Schneidoperation an diesem Schneidort durchgeführt und abgeschlossen ist.

The transport unit consists essentially of at least one support, which end is provided with at least one print product-related gripper, wherein the gripper detects the printed product to be trimmed spine side, whereby the printed product is conveyed hanging, and wherein the support and gripper relative to the cutting locations following control-assisted translational movements lie:

• i) takeover of the printed product by the gripper of the support after completion of the first cutting operation at the first cutting location; ii) transferring this print product through the same support / gripper to the second cut location after the cutting operation at the first cut location; iii) transfer of this printed product by the same support / gripper to the third cutting location for the third cutting operation after cutting operation at the second cutting location; and thereafter iv) returning the support / gripper to the home position at the first cutting location for retaking a subsequently delivered printed product after the first cutting operation at that cutting location is completed and completed.

• i) Der erste Greifer des ersten Supports übernimmt das Druckprodukt nach erfolgter erster Schneidoperation am ersten Schneidort: ii) Der erste Support/Greifer überführt dieses Druckprodukt zu dem zweiten Schneidort, positioniert dort das Druckprodukt für die Durchführung der zweiten Schneidoperation und kehrt anschliessend zur Ausgangsposition am ersten Schneidort zurück, wo die erneute Übernahme eines nachgelieferten Druckproduktes erfolgt, nachdem bei diesem die erste Schneidoperation am ersten Schneidort durchgeführt wurde; iii) Zwischenzeitlich übernimmt der zweite Greifer des zweiten Supports das Druckprodukt unmittelbar nach beendeter Schneidoperation am zweiten Schneidort und überführt dieses zu dem dritten Schneidort, wo die dritte Schneidoperation stattfindet; iv) Danach kehrt der zweite Support mit dem zweiten Greifer zu dem zweiten Schneidort zurück, wo bereits wieder ein von dem ersten Support/Greifer nachgebrachtes und bereits beschnittenes Druckprodukt zur Abholung und Überführung desselben zu dem dritten Schneidort.

As a further variant, the transport unit may consist of two print product-related supports, each with a gripper, which also captures the print product to be trimmed spine side, so hanging, these supports are in operative operative connection with the associated grippers, and wherein the supports and grippers opposite The cutting locations are based on the following control-supported translation movements:

• i) The first gripper of the first support accepts the printed product after the first cutting operation at the first cutting location: ii) The first support / gripper transfers this printed product to the second cutting location, positions there the printed product for performing the second cutting operation and then returns to the starting position on the first cutting location, where the re-acquisition of a nachgeliefert printed product takes place after it was carried out at the first cutting operation at the first cutting location; iii) Meanwhile, the second gripper of the second support picks up the printed product immediately after the cutting operation is completed at the second cutting location and transfers it to the third cutting location where the third cutting operation takes place; iv) Thereafter, the second support with the second gripper returns to the second cutting location, where already again brought from the first support / gripper and already trimmed Printed product for picking up and transferring it to the third cutting location.

Both when operating with one and two supports, the head part is cut at the first cutting location, the front part at the second cutting location, and the foot portion of the printed product at the third cutting location.

A further transport unit of the printed products from one cutting location to the next is that at least two, three supports run along a substantially circular, round, elliptical-like path, said functional circumferential path consisting of a front and a substantially parallel rear path, wherein the two paths merge into each other through a lateral curvature. The front track serves to guide the supports straight or quasi-straight along the cutting edge. The number of supports along the route is dependent on the maximum allowable clock, that is, each support takes a leading role in a printed product, and performs this without transfer in the sense of the above statements on the three cutting locations. Maximizing production, the clock is designed so that the supports closely follow each other, and the distance to each other depends on the time taken for the individual cutting operations, which usually more than two or three supports are in use. For example, a reduction in the number of supports can be achieved as they accelerate along the trailing path between the last and first cutting operations. Thus, with such a provision, the intermediary cutting site specific levies and takeovers of the printed product can be circumvented by reciprocating supports. On the other hand, in order to keep production high, more peripheral support usually needs to be provided, and at the same time the infrastructure of the elliptical track is more demanding.

Such a transport variant characterized by an ellipse-like route is well-suited for a central trimming of the printed products set, so if the three cutting operations are carried out at a single cutting location, so if the acquisition of the printed product, its delivery to the central cutting location, and its subsequent delivery by one and the same support. Advantageously, then this support does not drive back on the front track, which would inhibit the production flow, but undertakes the return trip for the acquisition of a new printed product then on the rear track.

As far as a trimming of all format edges of the printed product takes place at a single central cutting location, preferably the following kinematic sequences should be provided:

Once the printed product is properly positioned positively within a stationary clamping device, it is finally pressed by a pressing unit, preferably a pressing bar, against the fixed wall of the clamping device and thus fixed for the cutting operation. The press beam is preferably located at the lower end of a spindle which is drivingly connected to a servomotor controlled by a servo drive, via a line. The servo drive is connected via another signal line with a sensor that detects the position of the press beam.

Turning the spindle moves the press bar in the direction of the printed product. The servo drive is also connected to a higher-level control. Once the printed product has finally been fixed, it is then trimmed at the front and then with two side knives on the head and on the foot using a cutting tool known as a knife. The order of cuts can also be reversed, head and foot before front trim. It is obvious that the movement of the side knives and the associated press beams must be made out of phase with the movement of the front knife and the associated press beam, so that a collision of the knife can be prevented. So as soon as the cutting is done by the side knives, the local pressures (clamping device, pressing bars) are terminated and the cut printed product is carried away.

In the case of the three-knife trimmer according to the invention, this procedure is not necessarily specified, in particular as regards the machining sequence of the first and third cutting locations, according to which the first trimming always has to be the head part, but it is readily possible to have the foot section at the first cutting location and then edit the head section at the third cutting location, wherein at the second cutting location as before, the circumcision of the front part of the printed product is carried out, this optimally designed to follow the present invention based on translational movements follow.

Whether the head or foot section is machined at the first cutting location depends on how the feed of the printed product to the three-knife trimmer is scheduled, i.e., whether the reading front side of the printed product is directed up or down on the conveyor belt. In both cases, the back edge of the printed product remains in transit to the three-cutter prior. If such a change (head / foot section) is made, then it must be ensured that appropriate control-technical precautions are taken for the sections to be cut off, in particular when head and foot sections with different section lengths are to be processed.

• Eine erste Ebene (X), welche durch die Überführung des Druckproduktes von einem Schneidort zum nächsten charakterisiert ist;
• Eine zweite Ebene (Y), welche durch die Ladung und Entladung des Druckproduktes am jeweiligen Schneidort charakterisiert ist;
• Eine dritte Ebene (Z), welche durch eine laterale Anpassung (Offset-Bewegung) des Supports/Greifers gegenüber den stationären druckproduktbezogenen Klemmvorrichtungen am Schneidort charakterisiert ist, wobei diese laterale Anpassung fest vorgegeben ist, oder optional gesteuert zur Einsatz gelangt kann.

The translational movements of the gripper or the gripper therefore detect two resp. three levels of work, namely:

• A first plane (X) characterized by the transfer of the printed product from one cutting location to the next;
• A second plane (Y) characterized by the charge and discharge of the printed product at the respective cutting location;
• A third plane (Z), which is characterized by a lateral adjustment (offset movement) of the support / gripper relative to the stationary pressure-product-related clamping devices at the cutting location, this lateral adaptation being fixed, or optionally controlled, being used.

The gripper itself is end equipped with pressure-product-related jaws, said gripper resp. the one or more supports at the cutting locations has an additional translational degree of freedom in all the above-mentioned planes (X, Y, Z). The seizure of the respective printed product is maximized at its center of gravity, and / or the seizure of the printed product in dependence on the cut off sections on the open side edges (head, front, foot) coincides with the best possible geometric location, with the latter possibility a medium to strong Deviation from the theoretical focus of the printed product is possible.

1. a) Die einer Klemmvorrichtung zugehörigen Klemmbacken steht direkt oder indirekt in Wirkverbindung mit einem für die kraftschlüssige Klemmwirkung operierenden Antrieb, wobei die durch die Antriebe geführten Klemmbacken einstellbare und/oder prädiktiv geregelte Hub- und Kraftschlussprofil aufweisen, welche auf eine beliebige Formatausprägung des jeweils zu bearbeitenden Druckproduktes ausgerichtet sind. So lässt sich das Druckprodukt durch das durch die Klemmbacken ausgeführte kraftschlüssige Bewegungsprofil gegenüber der Mittellinie des Rückens des Druckproduktes symmetrisch oder quasi-symmetrisch erfassen. Des Weiteren lässt sich erzielen, dass mit den Klemmbacken mindestens während der operativen Phase eine Klemmkraft auf das Druckprodukt durch ein gegenseitig abgestimmtes gleichförmiges, ungleichförmiges oder adaptives Geschwindigkeits- und/oder Bewegungsprofil ausgeübt werden kann.
2. b) Ein gegenseitig abgestimmtes gleichförmiges, ungleichförmiges oder adaptives Geschwindigkeits- und/oder Bewegungsprofil beider Klemmelemente einer Klemmvorrichtung lässt sich auch für eine einseitige Presskraftausübung eines einzelnen Presselementes vorsehen. Im Sinne einer Qualitätssicherung der Schneidoperation betrifft dies den Pressbalken, der in unmittelbarer Wirkverbindung mit den Messern steht, dergestalt, dass dessen Presskraftausübung auf das Druckprodukt nach bestimmten Kriterien vonstatten gehen muss. Das Geschwindigkeitsprofil des Pressbalkens kann unmittelbar nach der ersten Kontaktnahme mit dem Druckprodukt in einen anderen Modus überführt werden. Dies betrifft auch hinsichtlich der weiteren Kraftentfaltung auf das Druckprodukt, welche je nach Vorgabe sukzessiv monoton oder quasi-monoton, ansteigend oder abfallend erfolgen kann. Wenn also bei der Kraftentfaltung gegen Schluss der Pressung eine gewisse Flexion verlangt ist, um beispielweise die allenfalls leicht verdickte Rückenpartie des Druckproduktes zu schonen, so lässt sich dies mit der Aktivierung eines entsprechenden Steuerprofils vorsehen, wonach beispielsweise die monoton ansteigende Kraftentfaltung in eine Kurve nach dem Prinzip einer Kondensatoraufladung übergehen kann. Dementsprechend ist es dann ohne weiteres möglich, eine exponentielle Kraftentfaltung vorzusehen, welche intermediär oder übergreifend zum Einsatz kommt.

In principle, a clamping device can be operated according to the following criteria:

1. a) The jaws associated with a clamping device is directly or indirectly in operative connection with a force acting for the force-locking clamping action, the guided by the drives jaws adjustable and / or predictively controlled lifting and adhesion profile have, which on any Formatausprägung each to be processed Printed product are aligned. Thus, the printed product can be detected symmetrically or quasi-symmetrically by the frictional movement profile executed by the clamping jaws relative to the center line of the back of the printed product. Furthermore, it can be achieved that with the jaws, at least during the operative phase, a clamping force on the printed product by a mutually coordinated uniform, non-uniform or adaptive velocity and / or motion profile can be exercised.
2. b) A mutually coordinated uniform, non-uniform or adaptive speed and / or movement profile of both clamping elements of a clamping device can also be provided for a one-sided press force application of a single pressing element. In terms of quality assurance of the cutting operation, this relates to the press beam, which is in direct operative connection with the knives, such that its pressing force must be exerted on the printed product according to certain criteria. The speed profile of the press beam can be transferred to another mode immediately after the first contact with the printed product. This also applies to the further development of force on the printed product, which can be successively monotonous or quasi-monotonous, rising or falling depending on the specification. If, therefore, a certain amount of flexion is required in the development of force towards the end of the pressing in order to preserve the possibly slightly thickened back part of the printed product, this can be provided by activating a corresponding control profile, according to which, for example, the monotonously increasing force development into a curve after Principle of a capacitor charging can pass. Accordingly, it is then readily possible to provide an exponential force development, which is used as an intermediate or overarching.

The cutting stations of the three-knife trimmer are at each cutting place in operative connection with at least one stationary, quasi-stationary or movable force-acting clamping device, which is responsible for the basic detection and generation of the pressing force on the printed product to be trimmed, this clamping device is tuned to the format size of the printed product , So has an optimized fixed contact surface, or in the course of Operation can be adjusted by simultaneous adjustments to the respective format sizes of the printed product.

The exercise of force, so the pressing force to be introduced, such a clamping device on the printed product during the cutting operation acts force predominantly against the exerting of the jaws of the gripper closing force on the printed product, such that this fixed during the whole cutting operation by the outgoing force of the respective clamping device remains positioned.

The closing force of the jaws of the gripper, as far as it remains at the location of the cutting operation, does not affect the pressing force of the clamping device and its vectors on the printed product. This means that the pressing force of the clamping device relative to the closing force of the jaws of the gripper behaves absolutely effective and Kräftprädominant.

At least one clamping device within the three-knife trimmer can consist of two clamping jaws, which execute at least one force-exerting closing movement relative to one another. Furthermore, at least one further clamping device can be made of individual composite pressing bars at a suitable cutting location, which exert the pressing force on the pressing surfaces of the printed product, these pressure bars in their entirety forming a pressure bar battery.

According to the invention, initially a feed device (also called insertion wheel or star-shaped wheel because of its configuration) is directly in operative connection with the first cutting operation at the first cutting location. Basically, this delivery device in the form of a four-part wheel, with other divisions are possible. If the promotion of a coherent book block, so the operation of such a multi-part delivery device is the following:

During a first 90 ° rotation of the feed device a hinged rake-like guide is pivoted against the book block, such that it lies after the 90 ° rotation on the back and is protected against fanning and / or falling over. The rake-like guide is coupled to an acting within the feed device clamping unit, which clamps the book block in a lying on the back position short term. This clamping unit is motion kinematically designed so that the rake-like guide is transferred to a buchblock thickness-dependent position. In this position, the clamping unit performs a small opening, so that the book block, following gravity, aligns at its back on a stop surface within the corresponding station of the delivery device. Then the clamping unit closes again, whereupon the book block is held in a defined position for the further processes.

The delivery device, so the insertion wheel rotates on it by two bars by 90 ° on and brings the book block in a now hanging position. During this rotational movement, the first rake-like guide and an operatively connected second guide are pivoted away from the book block, such that the freestanding pages or signatures of the book block hang vertically downwards solely by gravity, during which the book block rests in the area of its back through the book said clamping unit is held.

The delivery device of the device according to the invention for printed products, which also consist of two or more brochures, can likewise be formed by such a four-part delivery device, the functioning of this delivery device then being the following:

During a first 90 ° turn of the feed device, a hinged rake-like guide is pivoted against the booklets, such that the booklets are then on their backs after the 90 ° turn and thus against a Fanning and / or falling are protected. The rake-like guide is coupled to a clamping unit acting within the feed device, which clamps the brochures in a position lying on their backs for a short time; this clamping unit is kinematically designed so that the rake-like guide is transferred to a thickness-dependent position. Thereafter, the clamping unit opens a little again, so that the leaflets following gravity, align their backs on a stop surface within the delivery device and / or engage during this process additional mechanical and / or vibration-triggering means which align the leaflets to formateinheitlichen block , Then the clamping unit closes again, whereupon the brochures are held in a defined position.

The delivery device rotates by two bars by 90 ° and brings the booklets in a now hanging position. During this rotational movement, the first rake-type guide and an operatively second guide are pivoted away from the booklets so that the freestanding pages or signatures of the brochures hang vertically downwards solely by gravity, while the booklets are in the region of their backs through the clamping unit are held.

On the other hand, in the region of the first cutting location, this feed device is in operative operative connection with a movable jaw-equipped transport clamp which performs the function of the clamping device and which takes over the printed product from the feed device in accordance with the above-described kinematics and feeds it to the first cutting operation.

A flush valve is in operative connection with the delivery device, and is intended to supplement the already explained measures to achieve a secure positioning of the book block against the stop surfaces.

An abutment surface is used on the one hand both in individual books as well as in a stack of brochures for the orientation of the back side of the printed products against a fixed predetermined contact surface within the delivery device basis. On the other hand, it must be ensured that the head and / or foot of the printed products before the first cutting operation, a corresponding hanging elongated positioning of the printed products in the flow direction is ensured.

For individual books, this is done insofar as the format-moderate takeover of the individual book is guided by the delivery device through the transport clamp designed as a clamping device by a sensor which responds to the outer edge of the overhanging envelope. of the book block itself in the area of the head, resp. foot lot. This ensures that the chip cut there in the book block has a coordinated size.

For a stacked package of individual brochures, lateral means must be provided prior to the first cutting operation to ensure uniform alignment of the cutting edge edges of this package.

In summary, the function of the delivery device is to pivot a hinged, rake-like running guide against the book block, so that this after a 90 ° rotation, lying on his back, does not fanned and can not fall over. The rake-like guide is coupled to a clamping unit, which clamps the book block in a lying on the back position short term and is kinematically designed so that this rake-like leadership can be converted into a buchdickenabhängige position. Thereafter, the clamping unit opens a little again, so that the book block or brochures, following the gravity, gets the opportunity to align with his book block back page to the stop surface of the delivery device. Then the clamping unit closes again, whereupon the book block is held in a defined position.

This procedure, which is optimized in itself, thus guarantees that the back sides of the printed products assume a defined position, which is decisive for the following cutting operations.

Nevertheless, it is correct from a qualitative point of view, if additional measures (flush valve, acting in the vertical and horizontal plane) are provided, which should intervene in those cases when the use of gravity alone is not sufficient for different design of the printed product, in particular their book block backs in order to ensure the desired defined position of the book block back side relative to the associated stop surface.

In this context, it must be assumed that the printed products, in particular the book blocks, are in most cases finished with an envelope which has a relatively large overhang from the enclosed body on all sides (head, foot, front). This overhang does not imply any limitations on the cutting process, but must be detected with additional sensors for accurate trimming of the printed product within the various cutting operations. Due to logistical aspects, it is advantageous to operate with the same envelope sizes as possible, so that a wide range of different book block formats can be captured. So it can be assumed that the majority operates with a relatively large overhang.

To accomplish the secure defined position between the book block back page and stop surface within the delivery device even with envelopes with a large overhang in the head, foot and front sections, the inventive enrichment of the prior art is proposed during the short opening of the clamping unit to order to use the gravitational force on the printed product, in addition to intervene with at least one adequate flush valve, which directly or indirectly applies the necessary pressure force via the cover overhangs can exert indirectly on the enclosed printed product, so that at least the back side of the printed product rests securely on the associated stop surface.

For this purpose, the two front cover overhangs of the book block are detected by one in the pressure plane angle optimally aligned brush comb or by other flexible mechanical or pneumatically driven means so that the resulting pressure force transmits via Umschlagüberhänge on the body of the printed product, such that this then securely rests on the stop surface arranged within the delivery device.

Using the example of a brush comb whose material flexibility is formed so that the free resulting portion of the brush comb between the two Umschlagüberhängen by the vertical or quasi-vertical pressure movement can additionally penetrate to the front of the book block to unfold there an additional or primary pressure force can ,

In principle, this procedure can also be provided when it comes to forming a by adequate means lateral pressure on the head or foot section of the printed product to form a uniform level, even if the package consists of different brochures, so that this uniform Edge then by a sensor that optimal positioning within the transport bracket receives.

According to the invention, the clamping device at the second cutting location, as already mentioned above, is pressure strips which are arranged on both sides of the pressing surfaces of the printed product, and which pressure strips press the printed product simultaneously or subsequently from at least one side.

The number of operatively used pressure bars on both sides is determined in each case as a function of the format size of the printed product to be processed control technology, and it is also possible that the released for use pressure bars for the exertion of the pressing force on the printed product perform mutually directed movements, be it with equal force, be it through a controlled gradual development of force.

With a subsequent action of the pressure bars on the printed product, the pressing action, i. the Presskraftentfaltung, with the first pressure bar in the region of the back of the printed product to then continue continuously by a subsequenten or semi-successive sequence until approximately in the area of the front edge to be cut.

Subsequent control of the pressure bars along the format of the printed product also causes the air trapped between the sides or signatures of the printed product to be continuously squeezed out until a perfect consistency of thickness of the book block is achieved. Only then, in particular, can the cutting operations directed at the front edge of the printed product be carried out successfully. This procedure can also be carried out in the other cutting operations with then corresponding clamping devices.

Regardless of which type of clamp is used, whether jaws or pressure bars, the printed product is additionally pressed in the immediate vicinity of the cutting operations by the use of press beams, thus achieving ultimate optimum conditions for the cutting operation.

In the area of the third cutting operation at the third cutting location, another force-exerting clamping device is used, which is constructed according to a four-clamp system, whereby a different subdivision is also possible. No To trigger linguistic conflicts with the already discussed clamping devices, is here below a four-staple system spoken. This four-clamp system can simultaneously, directly or indirectly, fulfill the function of a pressure-product-related delivery device.

After the third cutting operation in direct or indirect operative connection with the discharge device, a precipitation device is additionally provided, which ensures that detected incorrectly produced printed products can be eliminated, wherein the precipitation can be refined insofar as a distinction is made between definitive and conditionally exempted printed products.

A variant of this precipitation device could be achieved by the technique of a cross distributor. To pass through the "good" printed products (books), the intended roles for the excretion rollers are positioned by a certain amount below a trained with longitudinal bands surface. As long as "good" books are being promoted, these roles will remain inactive. However, if a drop in the quality of the book is detected by built-in sensors, the discharge will be activated to the exact product. In such a case, the previously inactive roles intervene by being raised for the ejection in question. The discharge of these products can be left or right, depending on whether they are definitely or conditionally exempted products. For conditionally excreted printed products, it is assumed that they are still recuperable. This precipitating device is not limited to such a cross manifold.

This four-staple system of the device according to the invention, which accommodates both book blocks and brochures and can provide further processing, is operated according to the following criteria:
The book blocks or booklets inserted into the four-staple system for the third cutting operation are pressed during the cutting operation at the third cutting location between a movable jaw belonging to the four-staple system and a fixed jaw.

After performing a cutting operation at this third cutting location, the rotatable four-clamp system moves 90 ° each stroke, and thus also a staple with the book block or leaflets orthogonal to the knife movement at the third cutting location away from the knife. In this position, the book block or brochures are then discharged from the four-staple system and transferred to a conveyor belt.

The cutting operations in the cutting locations of the three-knife trimmer are carried out with respect to the trimming of the individual open side edges of the printed product, each with an individually driven cutting device, wherein at least one cutting device is operated with a single-acting cutting blade.

This cutting device is preferably of modular construction, and it consists of at least three cutting stations for the trimming of the head, front and foot edge of the book block, which are arranged at the cutting stations U-shaped with the open side down. The cutting operations are then operatively connected to at least one locally disposed pressing beam, the pressing beam acting against the inner planes of the U-shape. This down-facing U-shaped configuration will cause the cut sections of the book block or booklets all to fall down.

In addition, the three-knife trimmer according to the invention has the following advantages over the known three-knife trimmers:
During the individual cutting operation, the printed product is pressed by variously formed clamping devices (clamping jaws or pressure bar batteries), with additional press action by the already mentioned pressing bars, so that the printed product is almost completely recorded in each cutting operation. Only in the area of the back the printed product is not recorded. This is not critical, because the respectively used back binding (thread stitching, adhesive binding, saddle stitching, etc.) sufficiently holds together the printed product in this area, while the used for reaching jaws or pressure bars support the printed product integrally sufficient. This full-surface pressing of the printed product in conjunction with the pressing beam used are the prerequisites for achieving a high quality of cut.

Accordingly, the inventive almost full-surface pressure of the printed product is achieved in the simplest way. It is not necessary to provide format-dependent webs, support elements or support strips. As a result, a high power density can be achieved at high cycle rates in the inventive three-knife trimmer.

Since the printed product is transported hanging to the individual cutting stations of the cutting device with the inventive three-cutter, no support of the sides of the printed product is necessary at the transfer points in the transport system.

So because the printed products are not transported horizontally, the book pages do not bend at not full-surface contact surfaces between the support points, and thus they can not attach to the intended transfer points.

The three cutting stations of the cutter are U-shaped with the open side of the U facing down. The cut off section length The edges, ie on the open sides of the printed product is carried out in all three cutting operations (head, foot, front) against the inside of the U-shape. As a result, it is possible to operate with a single disposal device, according to which all sloping sections can be jointly "extracted". The sections fall down by gravity without further aids, where they can be globally collected or continuously transported away.

A good section disposal is of great importance because in the industrial production of individual printed products (book blocks) the different formats are very often produced only on the three-knife trimmer. In this case, the printed products are fed to the three-cutter in a size which is matched to the largest end format, which naturally leads to large sections to be cut off in the case of end sizes which are to be greatly reduced in size.

However, in the case of trimmers with cutting cassettes and press dies, it is customary to align the printed product with two right-angled stops in the corners of spines to the head side and spines to the foot side and with a stop from the book block front side. When creating variable-size printed products (book blocks), envelopes of the same size are usually used for a particular size range.

Said pressing beam is thus directly in operative connection with the respective cutting blade and ensures that that force is exerted on the printed product, which is indispensable for a clean cut.

Basically, two main variants are in the foreground: On the one hand, there is a forceful coupling between the press beam and the cutting blade, ie the press beam force has a fixed value, in which case the speed profile (press speed / acceleration) is usually monotonous as well.

Another variant consists of decoupling the force exerted by the cutting blade and the pressing beam so that the pressing beam then operates according to the following criteria:

The construction of a certain force on the pressing beam is done by building a corresponding torque on the servo motor by a servo drive. Based on a thickness measurement, the optimum pressing force is determined on the printed product, which can be done easily by stored control profiles. As a rule, a single calibration suffices for detecting a specific thickness variability of the printed products, as far as the underlying press force characteristic can be regarded as constant, because the differences in book block thicknesses within a job are relatively small.

On the other hand, however, it must be considered that the optimization of the pressing stroke, especially in the case of stiff and / or thin printed products, requires a substantial reduction of the pressing speed and especially of the acceleration. But it is advantageous in this concept that regardless of the production speed, the respective cutting device (s) always work at the maximum speed, which is not limited by the cutting speed, but by the limits determined by the mechanics. It is also essential that an increased cycle time is available at low machine speeds, in particular for the operations of transporting, aligning and pressing, since the cutting process always requires the same amount of time.

If the thickness of the printed products now varies within a certain frame and if these are produced by a fixed edge processing, the envelope on the uppermost side of the printed product is not the same size as on the last side of the same. If the height of the printed product varies, then the envelope is more or less dependent on the printed product. In general, the printed products with a solid supernatant of the envelope on the one Side and a variable overhang on the other side. For such products, the alignment of the book block, as is the case with the trimmers with cutting cassettes and press dies, is inappropriate.

In contrast, in the inventive three-cutter the still uncut printed product is aligned at the foot or head edge and the back edge. Thus, the variable projections of the envelope in terms of width, and possibly also the height of the printed product play no role.

Furthermore, it is the object of the invention to control the cutting operation in at least one cutting location so that multiple subsequent cutting operations take place if necessary, ie if the format can not be completed with a single cut, but, for example for quality reasons, the cutting operation optional be performed by several subsequent cuts on the same printed product edge.

For the desired quality provision in difficult cutting operations, the control of the device for performing cutting operations is designed so that the operator of the device can intervene in terms of control technology, and thus immediately introduces the implementation of a subsequential cutting sequence.

Thus, the operator is optionally available to go ad hoc to double or multiple cut, or to let the leadership of the cutting operation on stored control profiles, these control profiles are also able to intervene adaptively or predictively.

It is obvious that multiple cuts always cause the original clock of the device to be reduced. On the other hand, however, it is ensured with this provision according to the invention that the cutting procedure uninterrupted, so no postcropping operations need to be provided.

The retrieval of the respective operationally applicable control profiles takes place, for example, by information which is predetermined by a "marking" in the barcode on the printed product. Accordingly, by means of such markings, instructions are sent to the controller about the number of cuts to be made at a cutting location. Further stored control profiles can also intervene in the special case, if from an immediately determined qualitative loss on double cut resp. Multiple cut must be passed.

In those cases in which a single cut does not lead to the goal, with few exceptions, it will be double cuts, which are only used for extreme edge widths to be cut off. Therefore, in the following, for the sake of simplicity, a double cut, that is to say a first (single cut) and a second (double cut) cut, will be discussed, if an extended cutting operation for the single cut is optionally used.

Accordingly, if the present case of a double cut is mentioned, it does not mean that the cutting operation is finally limited to only two cuts. In the following, therefore, for the sake of simplicity, a double cut will be mentioned, and implicitly also include a subsequential cutting sequence.

The limit value when to switch to a double cut on a printed product generally depends on the overall width of the edge to be cut off, on the total thickness and size of the printed product, on the paper texture, on the thickness of the cover, etc.

The implementation of the double cut is designed so that the second cut tends to be minimized. There must be a balance between the two cuts are to be found, bearing in mind the fact that the formation of creases should be avoided as far as possible, so that the back-side load of the printed product from the first cut must not be greater than that of the second cut.

The implementation of multiple cuts in the inventive device requires that delivery differences exist, depending on whether the subsequential second cut takes place at the top or bottom edge or at the front edge of the printed product.

First, it will now be explained how the device-technical processes are carried out when the head or foot edge are to be trimmed.

After the first partial cut, the printed product is temporarily held by the clamping means of the transport unit, whereupon the clamping jaws belonging to a clamping device open slightly so that the printed product is positioned pressure-free between the clamping jaws.

Intermediär now practice the belonging to the transport unit jaws at the place of the first successful partial cut a frictional connection to the printed product, which give the printed product with open jaws of the clamping device an intertemporäre local positioning.

During this interval, the open jaws of the clamping device travel back or forth by a length amount corresponding to the width of the second section. The then forward or backward related nachschiebende movement is directed to the locally positioned cutting location in the device, which preferably acts in front of the head section and adjusts the foot section. Since the cutting sites are firmly positioned, depending on the entry of the printed product, it may also be the case that the forward motion is the foot part and the reverse motion is the head part of the printed product affect. Accordingly, the operative Nachschiebung the printed product for the further partial section is always done towards the cutting blade.

In both cases, at the end of the amount of length covered, the clamping jaws of the clamping device exert a frictional connection with the printed product, with the opening of the jaws of the transport unit being adjusted in the same manner.

These clamping jaws of the clamping device now move the clamped printed product forward or backward by the respective length amount for the second partial cut, in such a way that the printed product is thus transferred back into the cutting position.

This is followed immediately before the beginning of the second partial section by pressing the printed product through a cutting-site-related pressing bar, which exerts the ultimate pressing force on the printed product.

After completion of the second partial cut, the pressing beam retracts in time with the cutting tool, whereupon the clamping jaws of the clamping device open, and the printed product is then conveyed by the transport device, if it is the first cutting location, or passed on via a discharge device, which the delivery device is downstream, if it is the third cutting location.

As regards the second cutting location for the implementation of a second subsequenten partial section of the front end, the process steps are as follows:
After the first partial cut, the printed product is temporarily held by the clamping means of the transport unit, whereupon the jaws or pressure bars belonging to a clamping device open slightly, then that the printed product is positioned pressure-free between the jaws or pressure bars.

Intermediär now practice the belonging to the transport unit jaws at the location of the previous first partial cut a frictional connection to the printed product, which give the printed product with open jaws or pressure bars of the clamping device an intertemporal localized positioning.

During this interval, the transport unit moves the printed product in the vertical direction by a length amount down, this shift corresponds to the amount of the second partial section.

At the end of the length covered, the clamping jaws or pressing strips of the clamping device exert a frictional connection on the printed product, with a timed opening of the clamping jaws belonging to the transport unit.

Immediately before the start of the second partial cut, a pressing of the printed product through a cutting-site-related pressing beam follows.

• Buchformat;
• Abschnittgrösse;
• Papierbeschaffenheit;
• Messerschärfe des Schneidwerkzeuges;
• Maschinengeschwindigkeit

As for the force exerted by a servo motor force on the pressing beam, this depends essentially on the different values of the printed product, so at least

• Book format;
• Section size;
• Paper texture;
• Knife sharpness of the cutting tool;
• machine speed

If, for reasons of quality, multiple cuts are avoided, the aim should be to allow the smallest possible forces to act on the printed product. Since, as stated, the ultimate pressure in the cutting operation is exerted by the pressing beam, it is extremely important that the pressing force, which is preferably generated by an easily adjustable servo motor, is separated from the cutting force required by the cutting tool, ie the blade. So that both units work autonomously.

After completion of the second partial section of the pressing beam in time with the cutting tool return to the starting position, whereupon the jaws or pressure bars of the clamping device open, and the printed product is then transported by the transport device on.

A further embodiment in the trimming of the open edges of the printed product is that at least the second subsequent cutting operation takes place immediately after the first cutting operation, and that the amount of the edge width to be cut relative to the head, front, foot section of the printed product by a correspondingly guided displacement of the cutting tool used there and the means designed for the pressing can be carried out in relation to the pressure product clamped and held firmly at the cutting locations. For this purpose, the printed product remains clamped at the respective cutting location after the first partial cut has been carried out. The cutting tool and the pressing unit perform interdependent to each other after completion of the first partial section at the top, bottom edge of the printed product a lateral and at the front edge a vertical coordinated displacement, which corresponds to the amount of the respective subsequent further partial section. Subsequently, responsible supporters of the transport unit take over the further transport of the printed product from one cutting location to the next.

• Kopfschnitt: ca. 60 mm;
• Frontschnitt: bis 125 mm;
• Fussschnitt: bis ca. 125 mm.

Demgemäss müssen alle grösseren zu beschneidenden Abschnitte zur Wahrung der Schnittqualität durch einen zweiten resp. weiteren Teilschnitt verarbeitet werden.The sections to be trimmed in the printed product, which can be captured by a single cut, are generally:

• Head section: approx. 60 mm;
• Front section: up to 125 mm;
• Foot cut: up to approx. 125 mm.

Accordingly, all larger sections to be trimmed to maintain the quality of cut by a second resp. be processed further partial section.

Consequently, the size of the section when cropping the open edges of the printed product depends on the oversizes of the format of the delivered printed product. On the basis of this initial situation, it is then decided whether subsequential partial cuts must be provided to increase the quality of the cut (cut quality).

1. a) Alle offenen Formatkanten des Druckproduktes einen perfekten, glatten Schnitt aufweisen.
2. b) Die Buchrücken keine durch schnitttechnisch bedingte Anpressung, insbesondere durch den Pressbalken, Imperfektionen aufweisen; demnach muss sichergestellt werden, dass die Buchrücken perfekt glatt die Schneidoperation und die Einrichtung selbst verlassen.
3. c) Die massliche Einhaltung der Endformate des Druckproduktes eingehalten werden.
4. d) Insbesondere die Beschneidung der Kopf- und Fusskante streng im Rahmen der prädisponierten Abschnittsgrössen erfolgt, dies zur Sicherstellung, dass die Impaginierung des Textes gegenüber den Kanten des Druckproduktes perfekt korrespondiert.

The quality assurance check of the cut condition is important for:

1. a) All open format edges of the printed product have a perfect, smooth cut.
2. b) The backs of the spine do not show any imperfections due to cutting pressure, in particular due to the pressing bar; accordingly, it must be ensured that the spines leave perfectly smoothly the cutting operation and the device itself.
3. c) Compliance with the final formats of the printed product is observed.
4. d) In particular, the circumcision of the head and foot edge is strictly within the predisposed section sizes, this to ensure that the Impaginierung the text corresponds perfectly to the edges of the printed product.

The described cutting operations can also be carried out by a quasi-kinetic reversal of the force / displacement dynamics by the Nachschiebung of the printed product for the second partial section is carried out solely by the transport unit. In such a case, the jaws of the clamping device remain at the destination, and then they perform, based on the closing force, only an opening or closing movement, therefore, these jaws no longer perform a forward or backward movement, which the Nachschiebung of the printed product to a certain amount. Of course, this presupposes that the transport unit has corresponding degrees of freedom of movement at least in the X and Y directions.

Now, if the required Nachschiebung the printed product relative to the operating at a fixed location cutting tool (knife) solely by the activation of the transport unit, then no forward or backward movement of the jaws of the clamping device takes place in the system, but the transport unit now performs these restrictive movements simultaneously with the frictionally detected print product. These movements can be described as restrictive because they are partial movements of the paths that the transport unit executes from one cutting location to the next.

A further alternative for the second partial section consists in proceeding as follows in this partial section at the top and / or bottom of the printed product: i) After the first partial section has been taken, the printed product remains in the clamped state at the respective cutting location; ii) cutting tool, so knife, and press bars perform after completion of the first partial section at the head and / or Fußpartie a coordinated lateral displacement, which corresponds to the amount of the second partial section; iii) Subsequently, the transport unit takes over the further transport of the printed product according to here described Processes. As regards the circumcision of the front part in this context, the procedure is similar, namely, iv) after the first partial cut carried out, the printed product remains again in a clamped position at the respective cutting location; v) the cutting tool and pressing beam perform a vertical movement at the front part, which corresponds to the amount of the second partial section; vi) Subsequently, the transport unit takes over the further transport of the printed product.

For each printed product to be cut, the three-cutter control product data must be known, from which the necessary movements of the transport organs can be calculated so that at the end a cut print product is produced, which has the desired format dimensions.

These data can be transmitted to the controller in a variety of ways. Here are some examples of options:

Each printed product is equipped with an identification feature. A feature reader at the entrance of the three-knife trimmer reads the identification feature (for example: one-dimensional or two-dimensional barcode, RFID chip, character, image, etc.) and transmits the information from the feature with the machine cycle assignment to the controller. The feature may include the necessary information that maps the cut print product dimensions, or the missing information may be supplemented from control profiles stored in a database.

In another system, the printed products are clocked fed to the three-knife trimmer. With each cycle, the three-cutter control is provided with the information necessary to cut the printed product to the correct dimension. Here, too, data supplied with the printed product can be supplemented by data from a database.

Another possibility is to make the data known to the three-knife trimmer with an order of the printed products before their feeding takes place. The three-knife trimmer processes the next data set in the given order with each printed product being fed. The feeding of the printed products must be done in the right order. For control, a feature reader can be used in addition, which controls the order.

As already stated above, the printed products are lying, fed by the thread stitching, adhesive binding, saddle stitching, etc., processed side ahead and with approximately the same pitch via a conveyor belt to the three-knife trimmer. The approximately uniform pitch is either given by clocked delivery of the printed products to the conveyor belt of the three-knife trimmer, or it is produced by devices and methods known in the art prior to the conveyor belt.

In another embodiment, the printed products with an irregular pitch are fed to the conveyor belt of the three-knife trimmer. A clocking device ensures that minimal divisions (distance from the spine edge to the spine edge of the next product) are not undershot.

A sensor detects when a book block arrives at the conveyor belt of the three-knife trimmer. If the distance between the book blocks is greater than the minimum spacing, it can be provided as the first preferred variant that the printed products located within the three-cutter process are finished and then the infeed is resumed.

As a further option, it can be provided that the control reduces the speed of the three-knife trimmer and synchronizes the three-knife trimmer to the cycle of the printed product. If the division exceeds a maximum dimension, then it can also be optionally provided that the controller empties generated at the three-knife trimmer, as has already been explained above in connection with the operation of the delivery device.

Short description of the drawing

The invention will be described in more detail below with reference to the drawing. All elements not essential to the instant understanding of the invention have been omitted. In the following, the printed product is generally referred to as a book block, which then has room to respond to other types of printed products, such as brochures.

Figur 1

Translationsbewegungen der Supporte und Greifer innerhalb der X- und Y- Ebenen;

Figur 2

eine Gesamtansicht des Dreischneiders mit einer Momentaufnahme der Supporte;

Figur 3

eine weitere Ansicht des Dreischneiders mit einer weiteren Momentaufnahme der Supporte;

Figur 4

Einlaufvorrichtung für die Buchblocks in den Dreischneider;

Figur 5

ein Einschubrad als Zustellvorrichtung;

Figur 6

eine Transportklammer;

Figur 7

eine modulare Schneidvorrichtung beinhaltend die drei Schneidstationen;

Figur 8

eine Momentaufnahme beim Betrieb der Pressleisten;

Figur 9

eine weitere Momentaufnahme beim Betrieb der Pressleisten;

Figur 10

eine weitere Momentaufnahme während der Schneidoperation;

Figur 11

ein drehbares Vierklammersystem als Klemmvorrichtung und Ausförderungsvorrichtung;

Figur 12

die ultimative Anpressung des Buchblocks anlässlich der Schneidoperation;

Figur 13

Verlauf der Kräfteentfaltung verschiedener Klemmelemente während einer Schneidoperation;

Figur 14

einen Bündigschieber für die vertikale Druckausübung auf das Druckprodukt;

Figur 15

einen Bündigschieber für die horizontale Druckausübung auf das Druckprodukt;

Figur 16

eine weitere Transporteinrichtung der Druckprodukte;

Figur 17

ein Diagramm über die prozessualen Abläufe bei der Durchführung eines zweiten Teilschnitts, subsequent zu einem ersten Teilschnitt.

In the drawing shows:

FIG. 1

Translational movements of the supports and grippers within the X and Y planes;

FIG. 2

an overall view of the trimmer with a snapshot of the supports;

FIG. 3

another view of the three-knife trimmer with another snapshot of the supports;

FIG. 4

Inlet device for the book blocks in the three-knife trimmer;

FIG. 5

a Einschubrad as a delivery device;

FIG. 6

a transport bracket;

FIG. 7

a modular cutter including the three cutting stations;

FIG. 8

a snapshot of the operation of the pressure bars;

FIG. 9

another snapshot when operating the pressure bars;

FIG. 10

another snapshot during the cutting operation;

FIG. 11

a rotatable four-staple system as a clamping device and delivery device;

FIG. 12

the ultimate press of the book block during the cutting operation;

FIG. 13

Course of the development of forces of various clamping elements during a cutting operation;

FIG. 14

a flush valve for the vertical pressure application to the printed product;

FIG. 15

a flush valve for horizontal pressure on the printed product;

FIG. 16

a further transport device of the printed products;

FIG. 17

a diagram of the procedural processes in the execution of a second partial section, subsequently to a first partial section.

Embodiments of the invention

FIG. 1 1 schematically shows the translational movements of a transport unit belonging to a three-knife trimmer 100 whose movements are carried out from two print product-related movable supports 101, 102, these supports being in operative operative connection with one another, as will be explained in more detail later in the description of the remaining figures. The supports have at the end pressure-product-related grippers 103, 104 with clamping jaws which capture the printed product A to be trimmed on the spine side A ^{R in} succession. The supports themselves carry out the following coordinated control-supported translational movements in relation to the cutting locations 1, 2, 3, also called cutting stations:

The first support 101 actively takes over the printed product A after the first cutting operation at the first cutting location 1. The first support then transfers this printed product A to the second cutting location 2, and returns to the starting position 1 at the first cutting location 1 for a new takeover of the printed product nachgeliefert printed product A, this after the first cutting operation has been performed at the first cutting location 1. In the meantime, the second support 102 accepts the printed product A immediately after the cutting operation at the second cutting site 2 has been completed, and transfers this printed product to the third cutting site 3 where the third cutting operation takes place. Thereafter, the second support 102 returns to the second cutting location 2, where already again provided by the first support and already trimmed further printed product A for picking up and transfer to the third cutting location 3 is ready.

The translational movements of the supports 101, 102, with the connected grippers 103, 104, detect two resp. three levels, namely, in the first level X is performed by the transfer of the printed product from one cutting location to the next; in the second plane Y, the charge and discharge of the printed product at the respective cutting location is completed. Optionally comes then still a third level Z (not shown in detail) is used, in which, if necessary, a lateral adaptation (offset movement) takes place in relation to the printed product-related stationary clamping elements at the respective cutting location of the three-knife trimmer 100.

In the following, the effect of the translational movements of the supports on the grippers will be described, since they best reflect the operations within the trimmer.

FIGS. 2 and 3 show the three-knife trimmer 100 in a 3D representation. The book blocks A ⁿ are lying, with the book block back and at about the same pitch, fed via a conveyor belt 110 to the three-knife trimmer 100. The approximately uniform pitch is either given by a clocked feeding of the book blocks to the conveyor belt of the three-knife trimmer, or it is generated by prior art known devices in front of the conveyor belt.

In another embodiment, not shown, the book block with an irregular division of the conveyor belt 110 of the three-cutter 100 are supplied. A clock device ensures that minimal divisions (distance from one leading book edge to the book back edge of the next book block) are not undershot.

By a sensor not shown in detail that time is detected in which a book block arrives at the conveyor belt of the three-knife trimmer. If the distance between the book blocks is greater than the minimum spacing, then the controller reduces the speed of the translation movements of the three-knife trimmer, whereupon the trimmer is synchronized to the beat of the supplied book block. If the pitch exceeds a maximum dimension, the controller is programmed so that it is capable of generating empty cycles on the three-knife trimmer.

The book blocks A ⁿ are aligned on the conveyor belt 110 by a fixed stop on the head or foot side. This can be done by a transport route with slightly skewed transport rollers, or by other methods known from the prior art.

The remaining modules of the trimmer according to the instructions in the FIGS. 2 and 3 are described in detail in the following figures.

A flush valve 125 (See Figures 3 and 14 ) is in operative connection with the insertion wheel 120 (delivery device) and should serve as a supplement to the already explained measures in order to achieve a secure positioning of the book block with respect to its abutment surfaces.

An abutment surface is used on the one hand both in individual book block as well as in a stack of brochures for the alignment of the back side of the printed products against a fixed predetermined contact surface within the insertion wheel 120 basis. On the other hand, it must be ensured that the head and / or foot of the printed products before the first cutting operation have a corresponding hanging longitudinal positioning in the flow direction.

In book block this happens insofar as the format-moderate adoption of the individual book is controlled by the insertion wheel 120 by the transport clamp 130 by a sensor which responds to the outer edge of the overhanging envelope. of the book block itself in the area of the head, resp. appealing to a foot party. This ensures that the edge zone cut there has a coordinated size in the book block.

In the case of a stacked package of individual brochures, lateral means should then preferably be provided before the first cutting operation, which ensure a uniform alignment of the cutting-site-side edges of this package.

The function of the insertion wheel 120 is therefore to pivot a hinged, rake-like running guide against the book block, so that this after a 90 ° rotation, lying on his back, not fanned and can not fall over. The rake-like guide is coupled to the clamping unit, which clamps the book block in a lying on the back position short term and is kinematically designed so that this rake-like leadership can be converted into a buchdickenabhängige position. Thereafter, the clamping unit opens a little again, so that the book block, due to gravity, gets the opportunity to align with his book block back page after the stop surface of the insertion wheel. Then the clamping unit closes again, whereupon the book block is held in a defined position.

This procedure, which is optimized in itself, thus guarantees that the book block back side assumes a defined position, which is decisive for the following cutting operations.

Nevertheless, it is from a qualitative point of view, if additional measures are provided, which should intervene in those cases when using different embodiments of the book block, in particular the book block back, the use of the gravity component alone is not enough to the desired defined position of the book block back page against the Ensure appropriate stop surface.

In this context, it must be assumed that the book blocks are in most cases made up with an envelope which has a relatively large overhang from the original book block body on all sides (head, foot, front). This overhang in itself forms no restrictions on the cutting operation, but offers logistical advantages because of its unification, insofar as the same envelope size covers a wide range of different book block formats can. So it can be assumed that the relatively large overhang will be used by a majority.

In order to accomplish the secure defined position between the book block back side and the stop surface within the insertion wheel 120, even in the case of envelopes with a large overhang in the region of the head, foot and front parts, it is proposed to enrich the state of the art during the short opening of the clamping unit, to allow gravity to act on the book block, at least with a flush pusher 125, 126 (See Figures 14 . 15 ) to operate with an adequate shape, which can exert the necessary pressure force on the cover overhangs directly or indirectly on the book block, so that the book block back side rests securely on the associated abutment surface or is aligned laterally.

For this purpose, the two front cover overhangs of the book block of in the pressure plane angle optimally aligned brush combs (see Figures 14 . 15 ) or detected by other flexible mechanical or pneumatically controlled means, so that the resulting pressing force transmits via envelope overhangs on the body of the book block A, such that it then rests securely on the disposed within the insertion wheel 120 stop surface or otherwise positioned horizontally.

Using the example of a brush comb (see Figures 14 . 15 ) whose material-like flexibility is achieved so that the free resulting portion of the brush comb between the two Umschlagüberhängen by the vertical or quasi-vertical pressure movement can additionally penetrate to the front of the book block to unfold there an additional or primary pressure force can.

Basically, this pressure force can also provide, when it comes to a by adequate means in the form of another flush valve 126 (see Figures 3 and 15 ) to exert a lateral pressure force on the head or foot part of the printed product in general, with the aim of accomplishing the formation of a uniform level over all the printed products of the package, so that this edge can then be reliably detected by a sensor to that optimum positioning within the transport clamp 130 can be created so that the subsequent cutting operations (head and foot) can be performed properly.

As in this regard FIG. 4 As can be seen, the book blocks are pressed by slightly skewed transport rollers 113 in the transport direction 112 against a fixed stop 111 and then transported on to the three-knife trimmer 100. The fixed stop 111 may be formed with a revolving belt not shown in detail or even as a solid plate.

The book block A ⁿ then pass into a transfer position, from which they are raised, for example, by a rotating Einschubrad 120 and brought by rotation in position.

As in this regard FIG. 5 As can be seen, during a first 90 ° rotation of the insertion wheel 120, which fulfills the function of a delivery device against a subsequent operation, a hinged, rake-like guide 121 is pivoted against the book block A, so that this after a 90 ° rotation, lying on his back , do not fanned out and can not fall over. The rake-like guide 121 is coupled to a clamping unit 122, which clamps the book block in a supine position for a short time, and which is kinematically designed so that the rake-like guide 121 can be converted into a book thickness-dependent position. Thereafter, the clamping unit 122 opens a little again, so that the book block A, following the gravity, gets the opportunity to align book block back side after the stop surface 123 of the insertion wheel 120. Then the clamping unit 122 closes again, whereupon the book block is held firmly in a defined position. The four-part Einschubrad 120 now rotates over two bars by 90 ° on and provides the Print product generally in a now hanging position for further processing safely. During this rotational movement, the first rake-like guide 121 and a second rake-type guide 124 operatively connected thereto are slightly pivoted away from the book block so that the pages of the book block hang vertically downwards solely by gravity while the book block is resting on the book block back is held by the clamping unit 122.

In this position moves an open transport bracket (clearly visible in FIG. 2 , Pos.130) horizontally in the direction of the book block back over the book block itself and takes over this large area.

As detailed in this regard FIG. 6 As can be seen, this transport clamp 130 consists of two jaws 131, 132. Preferably, the transport clamp operates so that the one jaw 131 performs no stroke, while the other jaw 132 makes the entire stroke. Together, the two jaws 131, 132 drive two different offsets, which are related to whether the printed product is being transported in general or a no-load power.

Optionally, with certain variable and / or inconsistent book block thicknesses, it may be provided that the stroke of the two clamping jaws 131, 132 of the transporting clip 130 is designed individually, ie that identical or different paths are taken until the final pressing position is completed.

The transport clamp 130 can be moved horizontally by a linear motion device 133. A not shown in detail controlled drive moves the transport clamp 130 positionally accurate against a book block compliant transfer position. This takeover position is always dependent on the section to be cut off, which is to be made on the top or bottom of the book block. Then, in the transfer position closes the transport bracket 130 and thereby pinches the book block between its front and back surfaces over a large area. Only the back area and each to be cut off Section area of the book block remains free. For this purpose, the description of FIG. 12 directed.

The clamping unit 122 (see FIG. 5 ) opens now and releases the book block back. The transport clamp 130 then moves horizontally and transports the book block in the first cutting position (see also FIG. 1 , Cutting location 1) of a modular multi-cutting device.

The two clamping jaws 131, 132 can also be operated according to the following criteria: Each clamping jaw is directly or indirectly in operative connection with a drive operating for the frictional clamping action. The guided by the drives jaws have adjustable and / or predictively controlled lifting and adhesion profile against any Formatausprägung the submitted print product, so that the force-locking detection of the printed product made by the jaws is designed with respect to the center line on symmetry or quasi-symmetry. The jaws perform at least during the operative phase for exerting the clamping action on the printed product a mutually tuned uniform, non-uniform or adaptive velocity profile. This operation can be provided for all operatively connected jaws, which are part of this application.

As in this regard FIG. 7 As can be seen, the modular cutter 140 includes three cutting stations extending from a first station 141 at the cutting site 1 (see FIG FIG. 1 ), a second station 142 at the cutting location 2 (see FIG. 1 ) and a third station 143 at the cutting location 3 (see FIG. 1 ) consist. For the particular cutting operation, the book block is pressed by a pressing plate 145 and additionally with a pressing beam 144 such that the book block is maximized by pressing beams 144 and the already mentioned pressing plates in the area between the transporting clip and the cutting edge during the cutting operation clamped resp. is pressed. A knife 150b preferably moves in an oblique section against a per se fixed cutting bar.

The respective pressing bar 144 is therefore directly in operative connection with the respective cutting blade 150a, 150b, 150c, and ensures that that force is exerted on the printed product, which is indispensable for a clean cut.

Basically, two main variants are in the foreground: On the one hand, as pos. 250 in FIG. 7 wants to symbolize, there is a strong coupling between the press bars and cutting blade, ie the pressing beam force thus has a fixed value, then usually the speed profile (pressing speed / acceleration) is monotonous.

Another variant, as pos. 251 in FIG. 7 is to decouple the force exerted by the cutting blade and the pressing beam to each other so that the pressing beam 144 then operates autonomously according to the following criteria:

The construction of a certain force on the pressing beam is done by building a corresponding torque on the servo motor by a servo drive. Based on a thickness measurement, the optimum pressing force is determined on the printed product, which can be done easily by stored control profiles. As a rule, a single calibration suffices for detecting a specific thickness variability of the printed products, as far as the underlying press force characteristic can be regarded as constant, because the differences in book block thicknesses within a job are relatively small.

On the other hand, however, it must be taken into account that by optimizing the pressing stroke, especially in the case of stiff and / or thin printed products, a substantial reduction of the pressing speed and above all the acceleration is reachable. But it is advantageous in this concept that regardless of the production speed, the respective cutting device (s) always work at the maximum speed, which is not limited by the cutting speed, but by the limits determined by the mechanics. It is also essential that an increased cycle time is available at low machine speeds, in particular for the operations of transporting, aligning and pressing, since the cutting process always requires the same amount of time.

The remaining two cutting locations are operated by the knives 150a and 150c, which follow substantially the same pressing and cutting philosophy. In the first cutting station 141, the head portion of the book block is cut (see also FIG FIG. 1 ). However, it is not excluded to start the first cutting operation with the foot portion of the book block, but in some configurations this would require an adjustment of the operating location of the staple, possibly the cutter 140, as well as the width of the portions, on the basis of maintaining the spine side clamp A ^R (see FIG. 1 ).

Returning to FIGS. 1 . 2, 3 engages during the cutting operation in vertical (Y-plane, see FIG. 1 ) as well as in the horizontal direction (X-plane, see FIG. 1 ) a movable, open first gripper 103, wherein in the vertical direction, the gripper is directed against the book block back. After the first cut, the first gripper 103 takes over the book block on the back and the transport clamp 130 opens. This transport clamp then moves to the takeover position for the next book block. The first gripper 103 transports the book block from this first cutting operation ( FIG. 1 , Pos. 1) vertically upwards (Y-plane) and moves by a superimposed, horizontal movement in the second cutting position ( FIG. 1 , Cutting location 2).

The moving distance of the first gripper 103 in the vertical direction is controlled by the machine controller depending on the width of the cut book block, and also the moving distance of the gripper can be controlled individually in the horizontal direction relative to the book block, so when a special gripping position is desired. For example, if the format and the sections to be cut in the respective book block an asymmetric or quasi-asymmetric or a one-sided focus-related clamping effect necessary.

In the second cutting position ( FIG. 1 , Cutting location 2), the book block is replaced by a plurality of pressure strips which form a pressure bar battery ( Fig. 2, 3rd , Pos. 200), with which the book blocks are clamped between the front and the back. In FIG. 2 the pressure bar battery appears in the closed state while in FIG. 3 the pressure bar battery is shown in the open state.

As in the FIGS. 8 and 9 it can be seen, close the individual pressure bars 200 ^1-n , starting at the book bridges, one after the other, so that the air between the individual sheets in the direction of the cutting edge can be selectively pressed, at the same time there is a smoothing of the printed product as a body. How out FIG. 9 then well, close only as many pressure bars, as between the position of the gripper 103 with the respective jaws 103a, 103b and the second cutting station 142 at the second cutting location 2 (see FIG. 1 ) Can find space. The same jaws 104a and 104b (not shown in detail) are the other gripper 104 (see FIG. 1 ). This in turn achieves a large-area pressing of the book block. In the second cutting station 142, the front side of the book block is now cut, this is done in an analogous manner as in the first and the third cutting stations 141, 143 for head resp. Foot side.

After the used pressure bars 200 ^{1-n of} the pressure bar battery 200 the relevant book block at the second cutting location 2 (see FIG. 1 , Pos. 2) have clamped, as is apparent from FIG. 10 shows, the first gripper 103 can let go of the book block and in its takeover position (cutting location 1, FIG. 1 ) for the next book block.

Furthermore goes out FIG. 10 the ultimate force-related support of the book block A on the occasion of the cutting operation to ensure that the cut can be carried out with high quality by means of the knife 150b shown. So if the used pressure bars 200 ^1-n (see the FIGS. 8, 9 ) have taken over the book block A from the gripper 103, so grip pressing bar (Pos. 144), which exercise the immediate contact force on the book block in the immediate cutting area. In this case, this force must be designed predominantly with respect to the pressing force exerted by the pressure bars, so that the cut carried out by knife 150b enables a cutting edge which is sharpened at right angles. The pressing device consists of a fixed stop 152 as part of a press plate 145 (see also FIG. 7 ) on one side of the book block and from an opposite movable press beam 144 on the other side, which is pressed against the book block by a press stud 151.

The stopper 152 may also be made movable in a further embodiment to take into account the thickness and / or thickness consistency of the book block recessed from above, in other words, for the purpose that the leading edges of the inserted book block can not be pushed open. This dynamic adaptation of the stop 152 can be done by the already mentioned machine control.

For example, the press stud 151 for the press beam 144 may be driven by a motor, hydraulic, or pneumatic, thus exerting the predetermined pressing force on the book block.

By the same principle also the other press beams work (see FIG. 7 , Pos. 144) at the other cutting locations 1, 3, which now provide the exercise of the pressing force in the vertical plane. Again, it is about ensuring a right-angled sharply cut book block edge.

Once the book block has been neatly pressed by the pressure bars 200 ^1-n , then the second cutting operation (front cut) can be performed. After completion of the cutting operation, a second gripper 104 moves (see FIG. 1 ) in the position above the pressure bar battery and engages the book block in an analogous manner as was the case with the first gripper 103. The position of the second gripper 104, in which he clamps the book block is dependent on the cut book block height. The controller brings the second gripper 104 into the previously calculated gripping position, so that by the third cutting operation (see FIG. 1 , Pos. 3) on the book block, the correct book block height arises.

After the second cutting operation (front cut) is carried out, the pressure bar battery 200 opens and the second gripper 104 moves the printed product through a vertical (out of the cutting position), then horizontal (feed to the next cutting position) and finally back to the cutting position for the vertical movement third circumcision (foot part) continues (see FIGS. 1 . 2 ).

In the case of vertical movements in the region of at least one cutting position, the loaded gripper in question still performs, as required, a lateral offset movement with respect to a clamping surface of the clamping device.

If the cutting operation is at the third cutting location 3 (see FIG. 1 ), the rotatable discharge device (four-clamp system) 160 moves in accordance with FIG FIG. 11 and thus also the clip 161 with the book block orthogonal to the knife movement away from the knife. The rotatable four-clamp system 160 rotates 90 degrees during each stroke.

The end FIG. 11 in this regard, the position of the clip 161 in the cutting position 162 at which a movable jaw 163 is still open. Another clip acts within the discharge position 164. In this position, the book block A can be removed. The operation of the four-staple system 160 ensures that the book block A during the cutting process at the third cutting location 3 (see FIGS. 1 . 7 ) and the rotational movement of the four-clamp system is sustainably pressed between the movable jaw 163 and the fixed jaw 165. Furthermore, there are two states of the bracket 161 within a quadrant, namely a completely closed 166 and completely open 167 intermediate position. Specifically, one or the other variant can be considered within this quadrant, according to the prevailing space available during the rotation.

As a sampling device may for example be a conveyor belt, which is equipped for the promotion of the book block with movable rollers. Other devices known in the art may also be provided.

Out FIG. 12 shows the ultimate pressure of the book block by pressing bars 144 during the cutting operation. Such contact pressure corresponds to the effect of those under FIG. 10 has been described. The infeed direction is marked Pos. 170.

FIG. 13 shows the interdependence of the various pressing elements (clamping devices) on the printed product, which, based on the cutting location 2, is exerted by the various clamping devices 103, 200, 144, wherein at this cutting location the one clamping device consists of a pressure bar battery 200. The clamping forces of the various clamping devices in the diagram must also be understood only qualitatively. The clamping force of the gripper 103, which is made available for the transport 210 of the printed product from one cutting location to the next, is smaller than the cutting location-related clamping forces of the units 200 and 144 per se, since this is only a force which is only for the secure clamping effect of the printed product during transport must be sufficient. At the cutting location 2, the clamping force of the pressure bars 200 ^1-n then builds up simultaneously or subsequently, so that the clamping force of the gripper 103 immediately decreases 211 (acceptance point) as soon as the final clamping force of the pressure bars on the printed product is reached. The extent to which the clamping force of the gripper decreases to the printed product is set individually and also depends on the weight of the respective printed product. The final clamping force on the printed product, which is important for the qualitative cutting quality, is then exerted by the already mentioned pressing bar 144, which assumes its position fully parallel to the plane of the cutting blade. As from the force diagram according to FIG. 13 As can be seen, the pressing bar 144 preferably deploys the greatest clamping force, which is variably and phase-shifted 212 (engaging plane) with respect to the other clamping devices, as shown by the parallel lines of interruption 212a, 212b (phase shift interval). Once the pressing force exerted by the pressing bars 144 is established, the knife performs the cutting operation 213. Thereafter, the pressing bar 144 remains briefly in the cutting plane 215 until the clamping force of the gripper has built up so far that a secure onward transport 214 of the printed product is guaranteed. Thereafter, the clamping forces of the remaining elements 144, 200 after a certain decrease curve 217 subsequent from, so that the further transport plane 216 is open again with the fully grasped by the gripper 103 printed product. In principle, this dynamic also applies to the second support 102 (see FIG. 1 ) belonging gripper 104 in operative connection with the respective clamping devices.

These FIG. 13 symbolically further shows that the mutually tuned uniform, nonuniform or adaptive velocity and / or motion profile of both clamping elements of a clamping device can also be provided for a one-sided Presskraftausübung of the press bar 144 by the power supply for the knife 150b is no longer coupled with that for the pressing beam 144, but this exerts its pressing force autonomously on the printed product, as this symbolizes the position 251 (see also FIG. 7 ). Accordingly, the press force exertion of the press bar on the printed product can then be provided according to certain criteria. The speed profile of the press bar 144 may be transferred to another mode immediately after the first contact with the print product. This also applies to the development of force on the printed product, which can be successively monotonous, rising or falling depending on the specification. If, therefore, a certain amount of flexion is required in the force development of the pressing bar 144 towards the end of the pressing, in order to protect the possibly slightly thickened back of the printed products against wrinkling, this can be achieved by activating a corresponding control profile, according to which, for example, the monotonously increasing force development can go into a curve according to the principle of a capacitor charging. Accordingly, it is then readily possible to provide an exponential force development, which is used as an intermediate or overarching.

Furthermore, the document EP1647373 A1 represent an integral part of this description, especially when it comes to show how the coordination of the drives for the pressing force supply and knife dynamics is being considered.

FIG. 14 shows the configuration of a flush valve 125 (see also FIG. 3 ). This consists of a receiving plate acting from above 180, which carries printed product side brush body 181, 182, which exert pressure on the front over the printed product A protruding end turns 183, so that the back of the printed product coincides with the support surface within the insertion wheel 120. Since the turnup ends 184 lie in front of the same alignment plane, they can be seen better under the positions 185 and 186 (on the head or foot of the printed product A). Both brush body 181 and 182 exist each of two partial brush bodies 181a, 181b; 182a, 182b, which are at an angle to each other, in such a way that the respective turnup end is detected in a wedge shape and can be pressed down correspondingly parallel, whereby the turnup ends do not experience a damaging bulge.

FIG. 15 shows the configuration of another flush valve 126 (See also FIG. 3 ). This consists of a side of the (head or foot side) acting receiving plate 190 which carries printed product side brush body 191, 192, which exert pressure on the head or foot side over the printed product A projecting turnup ends 184, 185, so that the printed product A for the cutting operations are positioned accordingly. The overhanging ends are here in relation to the back section 193 of the printed product A visible. Both brush bodies 191 and 192 each consist of two partial brush bodies 191a, 191b; 192a, 192b, which are at an angle to each other, in such a way that the respective end of the envelope of the brush bodies detected in a wedge shape and the entire printed product body can be positioned laterally according to specification, so that the turn ends do not experience any harmful bulge.

FIG. 16 shows a further transport device 300 of the printed products from one cutting location 1 to the next cutting location 2 and from there to a third cutting location 3. The cutting operations carried out at these cutting locations are the same as under FIG. 1 are described.

The main difference from the dynamics according to FIG. 1 here is that at least three supports with respective grippers 101/103 operatively in use along a substantially ellipse-like route 301, this functional circumferential route consists of a front track 303 and a substantially parallel rear track 304, the two Trains pass through each a lateral curvature 305, 306 into each other. The front web serves to guide the successive successive supports 101 in a straight line or quasi-rectilinearly along the cutting locations 1, 2, 3. The number the support 101 along the route is dependent on the maximum allowable clock, ie, each support takes a leading role in a printed product, and this leads to the underlying three cutting sites 1, 2, 3, without making a transfer to another support. Maximizing production, the clock is designed so that the supports closely follow each other, and the distance to each other depends on the time taken for the individual cutting operations, which will usually be more than three supports in use. A reduction in the number of supports can be achieved, for example, if they experience an acceleration along the rear track 304 between the last cutting location 3 and the first cutting location 1.

Thus, with such a provision, the intermediate tailor-specific levies and takeovers of the printed product can be circumvented by reciprocating supports (see FIG. 1 ). On the other hand, in order to keep production high, more peripheral supports 302a-302g usually need to be provided, since the supports require time to travel over the rear track 304.

For better understanding, the supports which are in operational use are hatched, while the others not loaded, ie downstream of the discharge device 160, which respectively are on the way to the delivery device 120 for the renewed acceptance of a printed product, are shown unshaded.

Such a transport variant characterized by an ellipse-like segment 301 can be used as a basis for a central trimming of the printed products, ie if the three cutting operations are carried out at a single cutting location, ie if the takeover of the printed product, its supply to the central cutting location, and the latter Subsequent delivery by one and the same support. By analogy, such a central circumcision could advantageously be arranged within the second cutting location 2. Advantageously then should the support in use not on the front Trajectory 303 back into the delivery device 120 back, but on the rear track 304, so as not to inhibit the production flow.

It is obvious that, in the case of a central cutting location for cutting all the printed edges of the printed product, provision must be made for the movement of the side knives and the associated pressing bars to be out of phase with the movement of the front knife and the associated pressing beam in order to avoid a collision of the Knife can be prevented each other.

FIG. 17 shows block diagram moderate the procedural processes in the implementation of a common single cut at each cutting location 1, 2, 3, as well as those processes, which implements the implementation of a second, possibly further subsequent partial cuts. As already explained in part above, the supplied printed product A is aligned in the insertion wheel 120 for the immediate following cutting operation, such that the printed product A is detected by the first support 101 of the transport unit after this first cutting operation for further transport back side, wherein the first Cutting location 1 is basically the top edge of the printed product is processed, but in itself is not excluded that this first cutting operation may affect the foot cut. For this first cutting operation, the clamping device 130 and the pressing bars 144 basically come into action, and the cutting blade 150a performs the cutting operation. On the events occurring within this first cutting location 1, reference is made to the statements of the preceding figures.

Already with this first cut T _1-1 , a quality check 400 takes place, which is firstly aligned with the quality of the cut, and, secondly, it also detects whether the thickness of the cut cut corresponds to the values set in advance. At the same time the integrity of the back of the book block is checked. The means used for these tests include touch-based and non-contact sensors, which integrally detect the actual state of the printed product after each cutting operation and relay their information to the control unit, and also intelligent sensors that enable sensor-based production by being able to control the focused processes for quality optimize. These sensors must have excellent data quality for the quality checks underlying this, and are preferably based on inductive and photoelectric techniques. In general, therefore, the measured variable should be converted by the physical measuring principle of the sensor element into an internal signal. If required, individual electronic further processing is then provided, whereby a measured value is then available at the output as an electrically and / or electronically usable signal.

As far as the controller has detected in this first cutting location 1 on a second partial section T _1-2 , there is basically a process-related repetition of the first section T _1-1 , ie, the necessary pressure of the printed product is carried out with the same means 130 and 144 and the cutting operation is performed with the same cutting blade 150a. In addition, what is added is a coordinated kinematic procedure which ensures that the section of the top edge of the printed product A to be trimmed in addition to the fixed cutting blade 150a can be brought down.

Accordingly, according to the now carried out by definition first partial section T _1-1 the printed product A is temporarily clamped by the jaws of the gripper 103 of the support 101 of the transport unit, whereupon to a clamping device 130, also called transport clamp, belonging jaws 131, 132 slightly open, so that the printed product A is positioned pressure-free with respect to the said clamping jaws 131, 132. Intermediate now practice the belonging to the gripper 103 of the support 101 of the transport jaws at the site of the successful first partial section T _1-1 a positive connection to the printed product A, which jaws in operative connection with this support of the transport unit give the printed product A with open jaws 131, 132 of the transport clamp 130 an intertemporäre local positioning. During this interval, the open jaws 131, 132 of the transporting clamp 130 travel backward by a length amount relative to the cutting blade 150a, this amount of length corresponding to the width of the second partial section T _1-2 . At the end of the amount of length covered, the clamping jaws 131, 132 of the transporting clamp 130 exert a frictional connection on the printed product A with a coordinated opening of the clamping jaws of the gripper 103 of the support 101 of the transport unit. These clamping jaws 131, 132 of the transport clamp 130 now move the clamped printed product A forward by the respective length amount for the second partial cut T _1-2 , in such a way that the printed product A is thus transferred back into the cutting position. This is followed immediately before the start of the second partial cut T _{1-2 by} pressing the printed product A through the cutting-site-related pressing bar 144, which exerts the ultimate pressing force on the printed product. After completion of the second partial section T _1-2 , the pressing bar 144 retracts in time with the cutting blade 150a, whereupon the clamping jaws 131, 132 of the transporting clamp 130 open, and the printed product A is then conveyed by the support 101 of the transporting device. Also, during and after completion of this cutting operation, the quality-checking sensors 400 remain in use until the sensors of the next cutting site take the quality control, thus ensuring that the quality control over all cutting operations can be maintained.

Insofar as the controller should have recognized a third partial section T _1-3 after the second partial section T _1-2 , a process-related repetition of the first T _1-1 or second partial section T _1-2 takes place here as well, and also in this third partial section T _1-3 engage after the completion of the already described quality-testing sensors.

According to FIG. 1 the first support 101 actively accepts the printed product A after the first cutting operation at the first cutting location 1, resp. after the second, third, et al., cutting operations. The first support 101 then transfers this printed product A to the second cutting location 2, and returns to the initial position at the first cutting location 1 after delivery of the printed product A has been completed, where it is ready to take over a subsequent cropped printed product A after the first and possibly further cutting operations have been carried out at the first cutting location 1.

As for the ordinary cutting operation at the second cutting location 2, is based on the above Figures 8-10 directed. If a second or further partial cuts are to be made at this second cutting location, these partial cuts are carried out within this second cutting location 2 using the following method steps:

After the first partial cut T _2-1 , the printed product is temporarily clamped by the gripper 103 of the support 101 of the transport unit, whereupon the pressure bars 200 ^1-n belonging to a clamping device at this second cutting location 2 open slightly, so that the printed product A is opposite to the Pressure bar is positioned pressure-free. Intermediär now exerts the support 101 belonging to the gripper 103 at the location of the previously made first partial section T _{2-1 from} a frictional connection to the printed product A, by which the printed product is given an intertemporal locally determined positioning with open pressure bars of the pressure bar battery 200. During this interval, the support 101 of the transport unit then moves the printed product downwards in the vertical direction by a length amount, this shift corresponding to the average amount of the second partial section T _2-2 . At the end of the covered length amount, the pressure bars 200 ^{1-n of} the pressure bar battery 200 exert a frictional connection on the printed product A with a timed opening of the gripper 103 of the support 101 of the transport unit. It then follows immediately before the start of second partial section, a pressing of the printed product A by the cutting site-related pressing bar 144th

In the meantime, the gripper 104 of the second support 102 of the conveyor takes over the printed product A immediately after the cutting operation at the second cutting location 2 has ended, and transfers this printed product A to the third cutting location 3 where the third cutting operation takes place. Thereafter, the second support 102 of the transport device returns to the second cutting location 2, where already again one of the first support 101 of the transport device taught and already trimmed at the second cutting location 2 further printed product A is ready for picking up and transfer to the third cutting location 3.

In this third cutting location 3 is therefore about to trim the foot edge of the printed product A by one or more cuts. This happens after the following process steps:

After carried out by definition first partial section T _3-1 at the third cutting location 3, the printed product A is temporarily held by the gripper 104 of the second support 102 of the transport unit, whereupon belonging to a clamping device 160/161 jaws 163, 165, as part of the four-clamp system resp , the discharge device, slightly open, so that the printed product A is positioned pressure-free relative to said clamping jaws 163, 165. Intermediär now practice the belonging to the gripper 104 of the support 102 of the transport jaws at the location of the first partial section T _3-1 a positive connection to the printed product A, which jaws in operative connection with this support 102 of the transport unit the printed product A with open jaws 163 , 165 impart intertemporal local positioning to the transport bracket 130. During this interval, the opened jaws 163, 165 of the transport clamp 130 extended by a length amount with respect to the cutting blade 150c forward, said length value of the width of the second partial section T corresponds to _3-2. At the end of the amount of time spent, the Clamping jaws 163, 165 of the clamping device 160/161, with a coordinated opening of the jaws of the gripper 104 of the support 102 of the transport unit a frictional connection to the printed product A again. These clamping jaws 163, 165 of the clamping device 160/161 now move the clamped printed product A by the amount in question for the second partial section T _3-2 backwards towards the cutting blade 150c, such that the printed product A is thus transferred back into the cutting position. This is followed immediately before the start of the second partial cut T _{3-2 by} pressing the printed product A through the cutting-site-related pressing bar 144, which exerts the ultimate pressing force on the printed product. After the completion of the second partial cut T _3-2 , the pressing bar 144 retracts in time with the cutting blade 150 c, whereupon the clamping jaws 163, 165 of the clamping device 160/161 open, and the printed product A is then transferred via the discharge device to a separating device 500. Also during and after completion of this cutting operation, the quality-checking sensors 400 are in use.

In operative connection with this discharge device, therefore, there is a subsequent precipitation device 500, which carries out a triage of the cut printed products on the basis of the inputs originating from the quality-determining sensors 400. This precipitation device 500, which is not shown in more detail, is designed so that on the one hand the impeccable printed products are "let through" while the printed products recognized as deficient are rejected, whereby an alternative is also incorporated, so that further distinction is made between a final 520 and a final one conditional elimination 530. In the latter case, the requirements should be met that these printed products can be converted into perfect print products by post-treatment.

A variant of this precipitation device 500 which is not shown in more detail but is easy to follow for the person skilled in the art can be accomplished by the technique of a cross distributor. The "good" printed products 510 are conventionally transported on longitudinal belts. These longitudinal strips have roller sets on the underside, which in their use, that is, when the precipitation of a printed product is present, are lifted upwards over the running surface of the longitudinal strips, and so can channel the printed product differently. As long as "good" print products 510 are being promoted, the roles remain inactive. If, therefore, the quality detection of the cut printed product is signaled by the built-in quality-determining sensors 400, the precipitation is activated to the exact product. In such a case, the previously inactive roles intervene by being controlled for the respective excretion by further separating, namely, whether it is a definite 520 or only conditional 530 excretion of the printed products. For conditionally excreted printed products, it is assumed that they are still recuperable. Such a precipitation device 500 is not limited to the described cross distributor.

The described three-knife trimmer 100 according to the invention has the following advantages over the known three-knife trimmers:

During cutting, the book block is almost completely pressed by staples or pressure bar batteries. Only in one area of the spine does the book block have an open space M ₁ . This is not critical because the bound book block in this area is sufficiently compact, and in the cutting area the pressure bars within the respective cutting station of the cutting devices support the book block. The full-surface pressing of the book block leads to a high quality of cut.

The full-surface pressing is achieved in a simple manner: There are no webs, support elements or support strips format dependent to be adjusted. As a result, a high number of cycles and thus a high performance of the three-knife trimmer can be achieved.

Since with the inventive three-cutter the book block hanging to the individual cutting stations 141, 142, 143 (see FIG. 7 ) is transported, at the transfer points in the transport system no support of the pages of the book block is necessary. Since the book blocks are not transported horizontally, the book pages do not bend at not complete contact surfaces between the support points, which they can not attach to the transfer points.

The three cutting stations 141, 142, 143 of the cutting device are arranged U-shaped with the open side of the U down against each other. The section of book block to be cut is operative in all three cutting operations in association with the pressing bars 144 (see FIG FIG. 7 , and particularly FIG. 10 ) against the inside of the U-shape. Thereby, it is possible with a single lower side arranged section disposal means, all three cut sections successfully "auszufördern". Namely, these sections fall down by gravity without further aids.

A good section disposal, regardless of whether it is book blocks or brochures, is therefore of great importance, because in the industrial production of individual books, the different formats are very often only completed on the three-knife trimmer. The book blocks are fed to the three-cutter in a size adapted to the largest final format, which leads to large cutting sections in the case of strongly reducing final formats.

For three-knife trimmers with cutting cassettes and press dies, it is customary to align the book block with two right-angled stops in the corners of spines to the top and spine to the bottom, as well as from the front of the book block. When making format-variable books, brochures, etc., envelopes of the same size are usually used for a particular size range. Now varies the thickness of the book block and these are tied with binding machines that have fixed edge processing, so the envelope on the top of the book block is not the same size as on the last page of the book block.

If the book block height varies, depending on the envelope, the book is more or less in front of the book. Typically, the book blocks are made with a solid overhang of the envelope on one side and a variable overhang on the other side.

For such products, the alignment of the book block is inappropriate, as in the three-cutter with cutting cassettes and press dies.

In the trimmer according to the invention, the uncut book block or the uncut booklets are aligned at the foot or head edge and the processed back edge. Thus, the variable projections of the envelope in the book block height and the book width play no role.

For each book block to be cut or for each booklet to be cut, the three-cutter control product data must be known, from which the necessary movements of the transport organs can be expected, so that at the end a cut book is produced, which has the desired format dimensions.

These data can be transmitted to the controller in a variety of ways. Here are some examples of options. Each book block or booklet is equipped with an identification feature. A feature reader at the entrance of the three-knife trimmer reads the identification feature (eg: one or two-dimensional barcode, RFID chip, character, image, etc.) and transmits the information from the feature with the machine cycle allocation to the controller. The feature may include the necessary information mapping the cut print product dimensions, or the missing information may be supplemented from a database.

In another system, the book blocks are clocked fed to the three-knife trimmer. With each cycle, the three-cutter control is supplied with the information necessary to cut the book block to the correct dimension. Again, data supplied with the book block can be supplemented with data from a database.

Another possibility is to make the data known to the three-knife trimmer with an order of the book blocks before the book blocks are fed. The three-knife trimmer processes the next record in the given order with each book block being fed. The feeding of the book blocks must be done in the right order. For control, a feature reader can be used in addition, which controls the order.

Claims (46)

A device for performing cutting operations on at least one open form edge of at least one printed product, the device being in operative connection with a print product-related positional alignment delivery device of the print product in the first cutting operation and with a print product related delivery device operating after the last cutting operation, wherein the printed product ( A) for the edge-related cutting operation of a first (1) to a second (2) and a third cutting location (3), wherein the transfer of the printed product along a guide path from one cutting location to the next with at least one transport unit (101, 102 , ....) takes place, and wherein the transport unit is provided with at least one force applying means (103, 104), with which the printed product is detected on the back side, and it is conveyed hanging from one cutting location to the next, characterized g characterized in that the edge-related cutting operation is performed on at least one cutting location (1, 2, 3) by at least one cutting tool (150a, 150b, 150c), and that after a first edge-related cutting operation (T _1-1 ; T _2-1 ; T _3-1 ) optionally at least a second subsequent edge-related cutting operation (T _1-2 , T _2-2 , T _3-2 ) is feasible. Device according to claim 1, characterized in that the second subsequent cutting operation takes place immediately after the first cutting operation, and that the amount of the edge width to be cut in the second cutting operation by a guided displacement of the printed product with respect to the respective locally operating cutting tool (150a, 150b, 150c) is feasible. Method for operating the device according to Claims 1 and 2, characterized in that at least the second subsequent partial cut at the top edge of the printed product (A) at the first cutting location (1) is processed as follows: a) After the first partial cut (T _1-1 ), the printed product is temporarily clamped by the gripper (103) of the first support (101) of the transport unit, whereupon the clamping jaws (131, 132) belonging to a transporting clamp (130) open slightly , so that the printed product is positioned pressure-free relative to these clamping jaws; b) Intermediate now practice the jaws (103) of the support (101) of the transport unit belonging jaws at the location of the first partial cut a frictional connection to the printed product (A), which jaws in operative connection with this support the transport unit the printed product with open jaws (131, 132) impart an intertemporal location to the transport bracket (130); c) During this interval, the open jaws (131, 132) of the transfer bracket (130) travel backward by a length amount away from the cutting tool 150a corresponding to the width of the second partial section (T _1-2 ); d) At the end of the covered length amount, the clamping jaws (131, 132) of the transporting clamp (130), with the opening of the clamping jaws of the gripper (103) of the support (101) of the transport unit, re-apply a frictional connection to the printed product; e) The clamping jaws (131, 132) of the transport clamp (130) now move the clamped printed product (A) by the relevant amount of length for the second partial section (T _1-2 ) forward towards the cutting tool (150a), such that the format edge of the printed product to be trimmed is returned to the cutting position; f) It follows then immediately before the beginning of the second partial section (T _1-2 ) a pressing of the printed product by a cutting site related preferably bar-shaped pressing unit (144); g) After completion of the second partial cut (T _1-2 ) the pressing unit (144) moves back in time with the cutting tool (150a), whereupon the clamping jaws (131, 132) of the transporting clamp (130) open, and the printed product (A ) is then weiterbeförderbar by the support (101) of the transport device. Method for operating the device according to Claims 1 and 2, characterized in that at least the second subsequent partial cut at the foot edge of the printed product (A) at the third cutting location (3) is processed as follows: a) After the first partial cut (T _3-1 ), the printed product is temporarily clamped by the gripper (104) of the second support (102) of the transport unit, whereupon the clamping jaws (163, 165) belonging to a clamping device are used as part of the clamping device ( 160/161), so that the printed product (A) is positioned pressure-free between these clamping jaws; b) Intermediate now practice the jaws belonging to the gripper (104) of the second support (102) of the transport unit at the place of the first partial section (T _3-1 ) a positive connection to the printed product (A), which jaws in operative connection with this Support (102) of the transport unit impart an intertemporal local positioning to the printed product with the jaws (163, 165) open; c) During this interval, the open jaws (163, 165) of the clamping device (160/161) travel forward by a length amount away from the cutting tool (150c) corresponding to the width of the second partial section (T _3-2 ); d) At the end of the length covered, the clamping jaws (163, 165) of the clamping device exert a frictional connection on the printed product with the opening of the clamping jaws of the gripper (104) of the support (102) of the transport unit being adjusted in the same manner; e) The jaws (163, 165) of the clamping device (160/161) now move the clamped printed product (A) by the amount in question for the second partial section (T _3-2 ) backwards towards the cutting tool (150 c), such that trimming format edge of the printed product is guided back into the cutting position; f) It follows then immediately before the beginning of the second partial section (T _3-2 ) pressing the printed product (A) by a cutting site related preferably bar-shaped pressing unit (144); g) After completion of the second partial cut (T _3-2 ) the pressing unit (144) moves back in time with the cutting tool (150c), whereupon the clamping jaws (163, 165) of the clamping device (160/161) open, and the printed product (A) is then in operative connection with a discharge device and a subsequent precipitation device (500). Method for operating the device according to claims 1 and 2, characterized in that the second subsequent partial section at the front of the printed product at the second cutting location (2) as follows: a) After the first partial cut (T _2-1 ) is carried out, the printed product is temporarily clamped by the gripper (103) of the support (101) of the transport unit, whereupon the clamping units belonging to a clamping device (200 ^1-n ) open slightly, so that the printed product (A) is positioned pressure-free between these clamping units; b) Intermediär now exerts the support (101) belonging gripper (103) at the location of the previous first partial section (T _2-1 ) from a frictional connection to the printed product, which the print product with open clamping units (200 ^1-n ) of the clamping device (200) confer an intertemporal location; c) During this interval, the support (101) of the transport unit moves the printed product downwards in the vertical plane by a length amount, this vertical displacement corresponding to the amount of the second partial section (T _2-2 ); d) At the end of the length covered, the clamping units (200 ^1-n ) of the clamping device (200) again exert a frictional connection with the printed product under timed opening in operative connection with the gripper (103) of the support (101) of the transport unit ; e) Immediately before the start of the second partial cut (T _2-2 ), a pressing of the printed product through a cutting point-related preferably bar-shaped pressing unit (144) follows; f) After completion of the second partial cut (T _2-2 ) the pressing unit retracts in time with the cutting tool (150b), the Open clamping jaws or pressing bars of the clamping device, and the printed product is then transported by the further support (102) of the transport device to the third cutting location (3) on. Device according to Claim 1, characterized in that at least the second subsequent cutting operation (T _1-2 ; T _2-2 ; T _3-2 ) takes place immediately after the first cutting operation, and in that the amount of edge width to be cut relative to the head -, Front section, foot section of the printed product by a correspondingly guided displacement of there used cutting tool (150a, 150b, 150c) and designed for the pressing means (144) relative to the at the cutting locations (1, 2, 3) firmly clamped and persisting print product is feasible. Method for operating the device according to claim 6, characterized in that a) After the first partial cut (T _1-1 , T _2-1 , T _3-1 ), the printed product remains clamped at the respective cutting location (1, 2, 3); b) cutting tool (150a, 150b, 150c) and pressing unit (144) interdependent to each other after completion of the first partial section (T _1-1 , T _2-1 ; T _3-1 ) at the top, bottom edge of the printed product a lateral and in the Front edge perform a vertical coordinated shift, which corresponds to the amount of the respective subsequent subsequent partial section (T _1-2 , T _2-2 , T _3-2 ) corresponds; c) Subsequently, responsible supporters of the transport unit take over the further transport of the printed product from one cutting location to the next. Device according to claim 1, characterized in that the printed product to be trimmed consists of at least one coherent book block, individual brochures or a number of stacked brochures. Device according to claim 1, characterized in that the printed products before and / or after the cutting operations have the same or variable format dimensions with the same or different thickness dimensions. Device according to claim 1, characterized in that the first edge to be trimmed at the first cutting location (1) the head part, that the second edge to be trimmed at the second cutting location (2) the front end, and that the third edge to be trimmed at the third cutting location (3 ), that the first edge to be trimmed at the first cutting location (1) is the foot part, that the second edge to be trimmed at the second cutting location (2) is the front part, and that the third edge to be trimmed at the third cutting location ( 3) concerns the head of the printed product. Device according to claim 1, characterized in that the feed device is designed for a positional alignment of the printed product with respect to the optimal cutting position with respect to the subsequent first cutting operation. Device according to claim 11, characterized in that the delivery device for the positional alignment of a printed block formed as a book block (A) has the form of a multipart Einschubrades (120), which is operable according to the following criteria: a) During a first 90 ° rotation of the push-in wheel (120) a relative to the book block (A) hinged rake-like guide (121) performs a pivotal movement, such that the book block (A) after the 90 ° rotation on the back (A ^R ), whereby it is secured against fanning out and / or falling over; b) The rake-type guide (121) is coupled to a clamping unit (122) through which the book block (A) lying on its back is temporarily clamped, wherein this clamping unit (122) is kinematically operable such that the rake-like guide (121) in a book block thickness-dependent position can be transferred; c) Thereafter, the clamping unit (122) opens a little again, so that the book block back (A ^R ), following the gravity, according to a stop surface (123) within the insertion wheel (120) aligns; d) Thereafter, the clamping unit (122) closes again, whereupon the book block (A) has a defined position; e) The insertion wheel (120) then rotates by two cycles by 90 ° per clock on, whereby the book block (A) relative to the cutting locations (1, 2, 3) can be converted into a now hanging position; f) During this last-mentioned rotational movement, the first rake-like guide (121) and a second guide (124) operatively connected thereto are pivoted away from the book block, wherein the book block (A) in the region of at least a part of its back (A ^R ) by the clamping unit ( 122), that the portion of the book block (A) released by the guides (121, 124) is suspended vertically downwards solely by gravity. Device according to claim 11, characterized in that the delivery device for a printed product, which consists of at least one booklet, has the form of a multipart Einschubrades (120), which is operable according to the following criteria: a) During a first 90 ° turn of the push-in wheel (120), a ruler-type guide (121) hinged to the booklet makes a pivotal movement such that the booklet lies on the back (A ^R ) after the 90 ° turn, thus causing it to deflect is secured against fanning out and / or falling over; b) The rake-type guide (121) is coupled to a clamping unit (122), by means of which the booklet is temporarily clamped in a position lying on its back, wherein this clamping unit (122) is kinematically operable such that the rake-like guide (121) can be converted into a booklet thickness-dependent position; c) Thereafter, the clamping unit (122) opens a little again, so that the back of the booklet, following gravity, according to a stop surface (123) within the insertion wheel (120) aligns; d) Thereafter, the clamping unit (122) closes again, whereupon the booklet has a defined position; e) The insertion wheel (120) rotates by two clocks by 90 ° per clock on, whereby the booklet opposite the cutting locations (1, 2, 3) in a now hanging position can be transferred; f) During this rotational movement, the first rake-like guide (121) and a second guide (124) operatively connected thereto are pivotable away from the booklet, the booklet being in the region of at least part of its back (A ^R ) by the clamping unit (122) holds that the portion of the booklet released by the guides (121, 124) is suspended vertically downwards solely by gravity. Device according to one of claims 12, 13, characterized in that with open clamping unit (122) additional means are present, which are drivable from above (125) and / or from the side (126) through which directly or indirectly on book block or brochures a short-term contact force is exercised, by this contact force, a securing of the end position of book blocks or brochures against the stop surface (123) or an otherwise predetermined position at least in the horizontal direction can be achieved. Device according to one or more of Claims 1, 12, 13, characterized in that the feed device (120) is in operative operative connection with a movable clamping device (130) equipped with clamping jaws (131, 132) in the region of the first cutting location (1), which takes over the printed product from the feed device (120), whereupon the printed product can be fed to the first cutting operation. Device according to claim 1, characterized in that the transport unit consists essentially at least of a support (101) with at least one print product-related gripper (103) that the gripper detects the printed product to be trimmed spine side (A ^R ) that the gripper relative to the cutting locations (1, 2, 3) are based on the following control-assisted translational movements along a guide path: a) acquisition of the printed product by the support belonging to the gripper after completion of the first cutting operation at the first cutting location (1); b) Transfer of this printed product by the same support / gripper to the second cutting location (2), and after the cutting operation at the second cutting location finds a c) transfer of the same printed product by the same support / gripper to the third cutting location (3) for the performance of the third cutting operation, and thereafter one d) return of the same support / gripper to the starting position at the first cutting location for a new takeover of a re-used printed product can be introduced after at this first cutting location, the first cutting operation is performed. Device according to claim 1, characterized in that the transport unit consists essentially of two printed product-related supports (101, 102) each with a gripper (103, 104), that the grippers detect the printed product to be trimmed on the backside (A ^R ) that the two Supports / grippers are operatively connected to each other, and that the supports / grippers with respect to the cutting locations (1, 2, 3) by the following control-assisted translational movements along a guide path are operable: a) The first gripper (103) of the first support (101) takes over the printed product after the first cutting operation at the first cutting location (1); b) The first support then travels with this printed product to the second cutting location (2), positions there the printed product for the execution of the second cutting operation and then returns empty to the first cutting location (1) where the re-takeover of a postprinted printed product takes place, which is already cropped at this cutting location (1); c) Meanwhile, the second support (102) / gripper (104) picks up the printed product immediately after the cutting operation at the second cutting location (2) and transfers it to the third cutting location (3) where the third cutting operation takes place; d) Thereafter, the second support (102) / gripper (104) returns empty to the second cut location (2) where a replenished print product is again trimmed, whereupon the second support (102) / gripper (104) re-closes with this print product the third cutting location (3) in which the third cutting operation takes place. Device according to claim 1, characterized in that the transport unit consists of at least two, three supports (101/103), which are guided along a self-contained guide path (301), that each support in the region of the cutting locations (1, 2, 3 ) is individually loaded with at least one printed product for the respective cutting operation that each support after leaving the third cutting location (3) unloaded over the remaining course of the closed guide track to the first cutting location (1) traceable to there before or after the first Cutting operation a nachgebrachtes print product assumes that the support with the accepted print product is successively feasible after a certain clock to the other cutting locations (2, 3) for performing the upcoming cutting operation. Device according to claim 18, characterized in that the closed guide track has substantially the shape of an ellipse, quasi-ellipse, or the shape of a round or quasi-round course. Device according to Claim 18, characterized in that the number of supports running along the guide path depends on the Cycle of cutting operations and / or depending on the selected return speed of the supports between the third (3) and first cutting location (1) is. Device according to one of claims 1, 16, 17, 18, characterized in that all cutting operations are carried out at a central cutting location, and that the movements of side knives and associated pressing elements against the movement of front knives and associated pressing elements to prevent a collision between the said elements out of phase. Device according to one of claims 1, 16, 17, 18, characterized in that the grippers (103, 104) are provided at the end with clamping jaws (103a, 103b; 104a, 104b) acting on the printed product, that with at least one with a printed product loaded gripper in the region of at least one cutting location (1, 2, 3) before and / or after the cutting operation at least one targeted lateral offset movement relative to a pressing surface of at least one locally arranged clamping and / or pressing device (103, 104, 130, 160 / 161, 200, 144) is executable. Device according to one or more of claims 1, 16, 17, 18, characterized in that with the clamping jaws of the respective gripper (103, 104) the respective printed product symmetrical, quasi-symmetric, asymmetric or maximized at the center of gravity and / or in dependence the cut off section lengths of the edges can be detected. Device according to one or more of claims 1, 16-23, characterized in that with at least one gripper (103, 104) at at least one cutting location (1, 2, 3) before and / or after the respective cutting operation, a positioning further movement in at least one level opposite to a stationary pressing surface of a clamping device is feasible. Device according to claim 1, characterized in that the discharge device (160) is operable at the third cutting location (3) and can be operated according to the following criteria: a) The discharge device (160) is operable via a multi-part operating wheel; b) The delivery device has a clamping device (161) which consists of at least one first jaw (163) and at least one second jaw (165) with which jaws a clamping action on the printed product (A) is exercisable on the occasion of the cutting operation; c) After the cutting operation, the multi-part wheel performs a partial rotation, through which the printed product can be transferred to a Wegführungsposition. Device according to claim 1, characterized in that the discharge device (160) at the third cutting location (3) is in operative connection with a downstream precipitation device (500), which ensures that the well-sensored printed products (510) are released for further transport, that the printed products made as defective during the cutting operations due to continuous quality measurements made by sensors reach the precipitation (520, 530) definitely or conditionally. A device according to claim 26, characterized in that the precipitating device (500) is constructed according to the technique of a cross distributor, such that rollers incorporated in printed products having a loss of quality come into operation, which extend from one formed by longitudinal bands Lift off the surface to promote the good printed products (510) and thus carry out the further elimination of the products (520, 530). Device according to claim 1, characterized in that the one cutting device (150a-c) at each cutting location (1, 2, 3) in operative connection with a respective stationary or quasi-stationary clamping and / or pressing device (130, 161, 200, 144) with which at least one pressing force can be exerted on the printed product to be trimmed, that the clamping device has single or multiple acting controllable, belonging to at least one jaw pressing surfaces, that the clamping device is tuned to the format size of the printed product, or in the course of operation is adjustable by simultaneous adjustments to the respective format sizes of the printed product. Device according to one or more of Claims 1-28, characterized in that clamping and / or pressing devices (103, 104, 130, 160/161, 200, 12) which exert force and are in operative connection with each other at each cutting location (1, 2, 3), 144), that the clamping force of the gripper (103, 104) intended for transporting the printed product from one cutting location (1, 2, 3) to the next one is smaller than the first force-exerting clamping devices (130, 160/161, 200), in that a clamping force which is smaller than a second cutting location-related clamping device (144) can be exerted on the printed product by these first force-exerting clamping devices (130, 160/161, 200). Device according to claim 29, characterized in that the second cutting location-related pressing unit (144) has the shape of a pressing bar, which presses directly against the printed product, or is matched by a mechanical, pneumatic, hydraulic reaction force unfolding pressure-specific. Device according to one of claims 28-30, characterized in that on the pressing beam belonging to the pressing bar (144) producible pressing force for the cut-conforming contact pressure of the printed product is directly or quasi-directly in operative connection with a drive, which is also the cause of the provision of Knife cutting force within the cutting locations (1, 2, 3) is designed. Device according to one of claims 28-30, characterized in that on the pressing beam belonging to the pressing bar (144) producible pressing force for the cut-conforming pressing of the printed product is provided by an autonomous drive of the drive for the provision of knife cutting force within the cutting locations (1, 2, 3) is detached. Device according to one of claims 28-30, characterized in that the provision of the knife cutting force and the exerted pressing force of the press bar (144) are decoupled from each other on the printed product. Device according to claim 30, characterized in that the exerted pressing force of the pressing bar (144) is adjustable on the basis of the following criteria: Based on at least one thickness measurement, format size, envelope consistency and paper nature of the printed product, the optimum press force exerted on the press beams is continuously determined on the printed product to be processed or retrieved via stored control profiles. Device according to one of claims 28-33, characterized in that with the pressing device (144) formed pressing device at least during the operative phase, a cut-conforming contact pressure on the printed product is exercisable, which force preferably matched to is designed uniform, non-uniform, quasi-monotone, rising, falling, adaptive speed and / or motion profiles. Device according to one of claims 28-35, characterized in that the clamping jaws are equipped with at least one clamping device, which are movable according to the following criteria: a) Each jaw is directly or indirectly in operative connection with an operating for the non-positive clamping action drive, said guided by the drives jaws adjustable and / or predictively controlled lifting and adhesion profiles have, which are aligned with any format expression of the present printed product; b) that the non-positive movement profile executed by the clamping jaws is designed such that the printed product can be detected symmetrically or quasi-symmetrically with respect to its thickness-related center line; c) That with the jaws at least during the operative phase, a clamping force on the printed product by a mutually tuned uniform, non-uniform or adaptive speed and / or motion profile is exercisable. Device according to claim 1, characterized in that at each cutting location (1, 2, 3) before, during and after the cutting operation, the following pressing forces are acting on the printed product: a) A pressing force on the printed product is exercisable by the jaws (103, 104) belonging to the jaws (103a, 103b, 104a, 104b), which Pressing force for the transport of the printed product is designed from one cutting location to the next; b) A further pressing force on the printed product can be exerted by a first clamping device (130, 160/161, 200) acting at each cutting location, which pressing force is stationary on the printed product in the region of the respective cutting location; c) A further pressing force on the printed product can be exerted by a second pressing device (144) designed for each cutting location, which pressing force is directly effective in the region of the respective cutting location. Device according to claim 37, characterized in that a first clamping device (130) at the first cutting location (1) is effective, that a further first clamping device (200) at the second cutting location (2) is effective, that a further first clamping device (160/161 ) at the third cutting location (3) is effective, and that at each cutting location (1, 2, 3) in each case additionally a second clamping device (144) is operative. Device according to claim 38, characterized in that a first clamping device (200), which is operable at least at the second cutting location (2) consists of individual vertical or quasi-vertically downstream pressure strips (200 ^1-n ) that the pressure bars on the one Side of the printed product are firmly positioned, while with the pressure bars on the other side of the printed product a non-positive pressing movement is executable. Device according to claim 38, characterized in that a first clamping device (200) which is operable at least at the second cutting location (2) consists of individual vertical or quasi-vertically downstream pressure bars (200 ^1-n ) is that with the pressure bars on both sides of the printed product directly or indirectly to the printed product uniform or quasi-uniform directed non-positive pressing movements are executable. Device according to claim 38, characterized in that a first clamping device (200), which is operable at least at the second cutting location (2) consists of individual vertical or quasi-vertically downstream pressure strips (200 ^1-n ) that with the two sides of the printed product arranged pressing bars frictional pressing movements are exercised, whose movements are designed for symmetry or quasi-symmetry with respect to the thick center line of the printed product. Device according to one or more of claims 38-41, characterized in that in a subsequent pressing movement of the pressure bars (200 ^1-n ) on the printed product whose pressing action begins with the first pressure bar in the region of the back of the printed product to then through the use the rest of the pressure bars continuously to continue approximately in the plane of the edge to be cut. Device according to claim 42, characterized in that the subsequent control of the pressure bars starting from the back of the printed product up to the edge to be cut causes the air trapped between the signatures of the printed product to be continuously pressed out. Device according to one of claims 1-43, characterized in that the cutting operation with respect to the individual format edges of the printed product by an individually operating cutting operation at the respective cutting location (1, 2, 3) is feasible. Device according to claim 44, characterized in that at least one cutting operation is operable with a single-acting cutting tool. A method of ensuring the quality of the trimmed printed products in a device according to any one of claims 1-45, characterized in that during the cutting operations in the cutting locations (1, 2, 3), the outer structure of the printed product (A) and the trimmed edges continuously through quality-determining sensors (400) are checked, and that the qualitative statements from these checks are transmitted to a precipitation device (500), which makes a corresponding selection (510, 520, 530) compared to the trimmed printed products according to predetermined quality criteria.

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