EP0367715B1 - Method and device for trimming printed produce - Google Patents

Abstract

A method for trimming multi-layer printed products in a continuous process consists in the fact that a first blade part (3) is assigned to individual printed products (2) or several printed products (2) and said first blade part is moved together with the printed products. During the movement, the printed products and the first blade part are brought to rest along a planned trimming edge (4) and subsequently moved past a second blade part (5). By the interaction between the first (3) and the second blade part (5), the printed products (2) are trimmed along the planned trimming edge (4). <??>A corresponding device has a multiplicity of transport units moving on a circular path for the printed products. The transport units are preferably constructed as counter-blades whereas the associated trimming blades are arranged stationarily. <??>By this means, even in the case of large conveying quantities and thick printed products, a top-quality three-sided trimming is achieved. <IMAGE>

Description

The present invention relates to a method and an apparatus for trimming printed products according to the preambles of the independent claims.

Multi-layer, in particular single or multiple folded printed products, e.g. Magazines generally have to be trimmed on at least one, but usually on two or three pages. In the industrial flow production of such printed products, which are generally conveyed away from the rotary press in the form of a shingled stream, there is an effort to integrate the cutting process into the dynamic production process, i.e. to cut at full rotational output (e.g. 80,000 copies per hour).

Various such cutting devices are already known. For example, CH-A-650 967 and EP-A-0 017 878 each show a device for the lateral trimming of paper sheets, in which the paper sheets produced in the form of a shingled stream on a flat conveyor belt against one or more rotating ones Cutting knife transported and trimmed laterally by these. Although acceptable cutting results are usually achieved in this manner, these devices have some disadvantages. So it turns out to be difficult and expensive to precisely align the individual printed products in the shingled stream. In addition, the stream of shingles creates a cavity between the individual products and the base, which leads to tearing of the cutting edges, in particular the first sheets, and irregular cutting marks, especially in the case of thick material to be cut. If the products are not only to be cut on the sides parallel to the conveying direction, the stream of shingles must be deflected by 90 ° or the printed products must be rotated individually, which is contrary to an optimal spatial arrangement of the production line and is technically complex.

Recognizing that trimming in the shingled stream is associated with various disadvantages and generally does not meet the requirements for a high-quality cut, the applicant has previously proposed solutions in which the printed products are not cut in the shingled stream.

A further device according to CH-A-583 611, with which the printed products are cut individually, comprises a rotating cell wheel, the individual cells of which are each intended to receive a printed product and are provided with movable knives which can be actuated via common control cams and counter-knives which interact with them. This device is relatively complicated in construction and accordingly expensive to maintain.

Overall, it can be seen that the known cutting techniques in dynamic high-performance processes do not meet the qualitative requirements or at most at the cost of a great deal of design effort. in any case, such cutting qualities are never achieved as in static or alternating processing processes, where advanced cutting techniques are known, with which excellent results can be achieved through a sophisticated management of the cutting forces. For example, Whole paper packs, which rest on a solid base that acts as a counter knife, are cut with excellent accuracy by a vibrating or falling knife, which cuts the product on a precisely defined path (e.g. logarithmic shape).

The present invention seeks to remedy this. It sets itself the task, starting from the prior art, as known from CH-A-583 611, to create a reliable and precise method and a simple, maintenance-friendly and inexpensive device with which a high-quality trimming of multilayer printed products in continuous process, especially a high-performance manufacturing process. This task is solved by the characterizing features of the independent claims.

In conventional dynamic cutting processes - as described above - either the printed products are fed continuously or individually to a cutting device in which the knives and counter-knives are stationary, or there are a large number of cutting devices which at least temporarily move with the printed product and also consist of knives and counter-knives . These known cutting devices, whether stationary or rotating, always consist of essentially two parts, namely a knife and a counter knife, which are assigned to one another in pairs and fixed. In principle, the invention breaks new ground by dissolving the conventional knife-counter-knife unit, arranging and moving the two knife parts independently of one another, one knife part being fixed relative to the material to be cut and only temporarily bringing it into a defined cutting engagement. As a result, a cutting process comparable to the static process mentioned above is integrated into a dynamic process.

The main advantages of the invention can be seen in the fact that on the one hand the throughput required for a dynamic high-performance process is realized and at the same time a cutting quality comparable to static cutting methods is achieved by the knife parts (preferably counter knife) which are fixed relative to the material to be cut. A suitable choice and arrangement of the second knife parts (preferably cutting knife) makes it possible, depending on the nature, size and thickness of the printed products to be cut, to determine the cutting curve similarly to the above-mentioned static cutting devices in such a way that an optimal distribution of the Cutting forces result. This will make the qualitative advantages of a static and the performance advantages of a dynamic cutting process. In addition, by appropriately arranging three cutting knives, the printed products can be trimmed on three sides in a single pass, without the product flow having to be deflected.

• Fig. 1a eine Prinzipskizze des erfindungsgemässen Verfahrens, wobei der räumliche Ablauf von der Seite betrachtet wird;
• Fig. 1b die Prinzipskizze der Fig. 1a von oben betrachtet;
• Fig. 2 eine schematische Darstellung einer bevorzugten Ausführung der erfindungsgemässen Vorrichtung;
• Fig. 3 eine abgewickelte Darstellung der Vorrichtung von Fig. 2;
• Fig. 4 eine schematische Darstellung einer weiteren erfindungsgemässen Vorrichtung;
• Fig. 5 zwei Darstellungen zur Erläuterung des Einflusses der Anordnung der Schneidmesser auf die Schneidkräfte;
• Fig. 6 eine Darstellung zur Erläuterung des Einflusses der Anordnung der Schneidmesser auf die Schnittgeometrie;
• Fig. 7 eine schematische Darstellung einer weiteren Ausführung der Erfindung zum mehrseitigen Beschneiden von Druckprodukten;
• Fig. 8 anhand einer Reihe von Zeichnungen eine mögliche Ausgestaltung und Funktionsweise der einzelnen Zellen einer erfindungsgemässen Vorrichtung;
• Fig. 9 eine Einrichtung zur seitlichen Ausrichtung der Druckprodukte in den Zellen der erfindungsgemässen Vorrichtung;
• Fig. 10 eine der Figur 9 entsprechende Darstellung aus einem anderen Blickwinkel;
• Fig. 11 eine vergrösserte Darstellung der Zusammenwirkung der Zellen mit den Schneidmessern; und
• Fig. 12 eine Einrichtung zur radialen Ausrichtung der Druckprodukte in den Zellen der erfindungsgemässen Vorrichtung.

An embodiment of the invention will be explained in more detail below with the aid of selected drawings. It shows:

• 1a shows a schematic diagram of the method according to the invention, the spatial sequence being viewed from the side;
• 1b the schematic diagram of FIG. 1a viewed from above;
• 2 shows a schematic illustration of a preferred embodiment of the device according to the invention;
• Fig. 3 is a developed view of the device of Fig. 2;
• 4 shows a schematic illustration of a further device according to the invention;
• 5 shows two representations to explain the influence of the arrangement of the cutting knives on the cutting forces;
• 6 shows a representation to explain the influence of the arrangement of the cutting knives on the cutting geometry;
• 7 shows a schematic illustration of a further embodiment of the invention for multi-sided trimming of printed products;
• 8 shows a possible design and mode of operation of the individual cells of a device according to the invention on the basis of a series of drawings;
• 9 shows a device for the lateral alignment of the printed products in the cells of the device according to the invention;
• 10 shows a representation corresponding to FIG. 9 from a different perspective;
• 11 shows an enlarged illustration of the interaction of the cells with the cutting knives; and
• 12 shows a device for the radial alignment of the printed products in the cells of the device according to the invention.

Figures 1a and 1b show the principle of the method according to the invention. In Figure 1a, the spatial sequence is viewed from the side, Figure 1b shows the same sequence from above for better understanding. Phase I represents the printed products 2, which are conveyed, for example, in the form of a shingled stream 1, ie partially overlapping one another, as are usually conveyed away by a rotary press. The shingled stream is dissolved, with each individual or, as in the illustration, several printed products jointly being assigned a first knife part 3 which moves with the printed products (phase II). Of course, the printed products conveyed in the stream 1 can each comprise several elements. The printed products denoted by 2 in the figure can thus consist of several individual products, for example magazines lying one above the other or parts of a newspaper inserted into one another. If the term "printed product" is used, one or more (eventu only temporarily) to understand individual products combined into one unit.

The printed products and the associated first knife part 3 are aligned along an intended cutting edge 4 and brought into contact (phase III) and guided past a second knife part 5. The first 3 and the second knife part 5 are brought into cutting engagement, so that the printed products 2 are trimmed along the intended cutting edge 4 (phase IV). The second knife part 5 is shown in FIG. 1 as a stationary, rotating cutting knife.

Of course, it is within the scope of the invention to give the second knife part a different shape and function. The second knife part can e.g. be designed as a stationary, non-rotating blade or also as a movable, non-stationary knife part. Although the moving knife part 3 is preferably designed as a counter knife and the knife part 5 as an actual cutting knife, their functions are of course also interchangeable. Likewise, it does not matter for the method described here whether the printed products are fed in as a shingled stream or in some other arrangement. It may well be that the printed products are already delivered individually or in groups from a previous work process.

The printed products are advantageously guided past the knife part 5 in such a way that the side edge after cutting is essentially perpendicular to the surface of the printed product.

A preferred embodiment of a device according to the invention for triple-sided trimming of multilayer printed products will now be described with reference to FIG. To emphasize the essential points, the figure is limited to a largely schematic representation. A drum rotor 11, which rotates about a fixed axis 13, is provided on its periphery with a plurality of cells 12, which are preferably arranged radially and are opened laterally and towards the outside. The multilayer printed products 2, which are fed in the form of a shingled stream in the direction of arrow A, are each inserted into one of these cells by a feed device (not shown). Due to the rotation of the drum rotor 11, the printed products located in the cells 12 are first guided past a first stationary cutting device 14, with which e.g. the side edge facing away from the observer is trimmed. The side edge of the printed products facing the observer is then trimmed by means of a second cutting device 15. In the selected example, the cutting devices 14 and 15 are designed as disk-shaped rotating cutting knives. Finally, a third cutting device 16, e.g. a cutting roller, the upper edge of the printed products is trimmed, whereupon the printed products, which are now trimmed on three sides, are removed from the cells 12 by a conveyor device (not shown) and conveyed further in the direction of arrow B.

The cells 12 of the drum rotor 11 are separated from one another by preferably radially extending cell walls 31. The cell walls are either provided with three counter knives, which interact with the cutting devices 14, 15 and 16, or are designed directly as counter knives. A detailed embodiment is described below with reference to FIGS. 8 to 12.

In contrast to other conceivable variants of realizing the claimed method, the advantage of the specific embodiment described here basically consists in the fact that with the drum rotor, a defined and precise guidance of the counter-knives interacting with the stationary cutting knives and thus a constant cutting quality can be achieved in a simple manner can be realized. the larger the number of cells of the drum rotor, the higher the delivery capacity of the device, provided the rotation speed remains the same. Although a single cell would basically suffice to carry out the method, a plurality of such cells is preferred for the specific device.

Figure 3 shows the device of Figure 2 in a development, the conveying direction is indicated by an arrow. The inserted into the cells 12 and these laterally projecting, untrimmed printed products 2 are positioned, for example, by means of a lateral link 17 in the cells 12 to a defined position of the printed products - in particular the intended cutting edges 4, 4 '- in relation to the cell wall 31, which here also acts as a counter knife, and to create the cutting knife 14. Of course, further scenes (on the other side of the printed products or in front of the second cutting knife 15) can be arranged. The printed products can also be clamped in their cells are fixed in such a way that they are no longer moved until they have passed the second cutting knife 15.

A device similar to that previously discussed is shown in Figure 4. The function of the cutting knives 14 and 15 is perceived by rotating cutting rollers 18 and 19 arranged on the side of the drum rotor 11. The axes of rotation of these cutting rollers are preferably arranged perpendicular to the axis of rotation 13, but in such a way that they do not cut them, so that - considering a single printed product - this does not cover an entire side edge at the same time, but rather continuously and in an analogous manner to the ones mentioned above Cutting knives 14 and 15 is cut from one end of the side edge to the other. In the selected representation, the side edges of the printed products are therefore cut from the inside towards the outside.

Of course, the cutting devices 14, 15 and 18, 19 provided at different locations in the illustration can also be arranged opposite one another, that is to say the front and rear edge cuts are carried out simultaneously. The arrows A and B and the indication of the direction of rotation of the drum rotor 11 are not mandatory. The device can thus also be operated in the opposite sense.

It should be emphasized that the invention makes it possible, in particular, to arrange the lateral cutting devices 14, 15 and 18, 19 in such a way that they are optimally used by, as shown in FIG. 2, a single cutting knife simultaneously engaging with three or four printed products. The edge of a printed product is also continuously cut from one end to the other (here from the inside to the outside), which promotes high cutting quality. The surface of the cutting roller 16 is provided, for example, with spiral cutting edges, so that the printed products are cut at a similarly favorable cutting angle as the circular cutting knives, which corresponds to the slope of the spiral.

The term "stationary" used previously in connection with the cutting knives and cutting rollers naturally does not exclude that the cutting devices can be adjusted in relation to the drum rotor depending on the printed product and the desired cut. Rather, it means that the position of the cutting devices does not change during operation.

FIGS. 5a and 5b schematically show how the cutting forces acting on the printed products can be influenced and utilized by suitably arranging the cutting knife in relation to the drum rotor 11 and by selecting the direction of rotation. In Figure 5a, the axis of rotation of the cutting knife 14 is relatively close, at a distance a, at the axis of rotation 13 of the drum rotor 11. The printed products are cut continuously in this way from the inside to the outside (based on the drum rotor). In FIG. 5b, the cutting knife is displaced outwards by a distance b. In this case, the printed products are continuously cut from the outside towards the inside. By changing the directions of rotation of the drum rotor and / or the cutting knife, the direction and amount of the cutting forces acting on the printed products F 1 (tangential) and F 2 (radial) can be varied depending on the application. The printed products are automatically fixed in the cell 12 by a suitable choice of these cutting forces.

The influence of the arrangement of the cutting knives on the cutting geometry can be seen from FIG. A single printed product 2, which is located on the periphery of the drum rotor 11, which rotates at a constant angular velocity Ω, moves at its outer end E _n at a greater speed than at its inner end E 1 facing the axis of rotation 13. There is a linear velocity profile that depends on the distance from the axis of rotation: v _i = r _i · Ω. During the cutting process on the first cutting device 14 (corresponding to that of Figure 5a), the printed product is first cut at its inner end E₁ by the point S₁ of the cutting knife 14, last at its outer end E _n by the point S _n . The cutting angle α₁ at S₁ is significantly flatter than the cutting angle α _n at S _n . During the cutting process on the second cutting device (corresponding to that of Figure 5b), the printed product is cut from the outside towards the inside (from E _n , S _n 'against E₁, S₁'). The cutting angle α _n 'at S _n ' is significantly flatter than the cutting angle α₁ 'at S₁'. In both cases, however, the speed of the printed product at S _{n is} greater than at S₁ (v _n > v₁). By suitably positioning the cutting knife 14, the cutting angle and cutting speed can be selected in accordance with the specific circumstances and requirements in order to achieve a suitable cutting geometry and thus an optimal cutting quality. By means of a suitable combination and variation of (α _i , v _i ) over the entire cutting edge, similar to the static cutting methods mentioned at the beginning, cutting curves adapted to the material to be cut (eg logarithmic curves) can be realized.

Of course, the cutting geometry is also influenced by the design of the cutting edges of the cutting knives. In addition, the change in the cutting angle between S 1 and S _n can be influenced by enlarging / reducing the cutting knife (α _i as a function of r _i ).

The arrangement of the cut surfaces of the cutting devices with respect to the printed products located on the circular path is of importance in all of the embodiments. The cutting surface of the cutting devices in the case of the cutting knives 14 and 15 corresponds exactly to the plane of the cutting knife. In the case of the cylindrical cutting rollers 16, 18 and 19, the cut surface corresponds to the tangential surface to that surface line of the respective cutting roller which is closest to the printed products. Of course, other possible cutting devices (e.g. rotating wires) are also conceivable with which the side edges of the printed products being passed can be trimmed in a continuous manner.

Instead of cylindrical cutting rollers, other geometric shapes can also be used. So it is conceivable the lateral cutting rollers 18 or 19 e.g. not cylindrical, but frustoconical.

The cylindrical roller 16, whose axis of rotation is arranged parallel to the axis of rotation 13 of the drum rotor 11 in order to achieve a head cut running perpendicular to the side edges, has the effect that the head edge of a printed product is trimmed along its entire length substantially simultaneously. If the head edge is also to be cut continuously from one end to the other, instead of the cylindrical cutting roller shown, another rotationally symmetrical body can be selected, the axis of rotation of which is slightly oblique to the axis of rotation 13. Assuming that the head edge of the printed products should run parallel to the axis of rotation 13 of the drum rotor 11, those points at which the cutting device cuts the printed product must be equally spaced from the axis of rotation 13. The geometrical The location of all these intersection points of a single edge corresponds to a section from a helix, which can be approximated by a flat elliptical section if the axis of rotation is slightly inclined. The ellipse section then corresponds to a surface line of the rotating body of the cutting device.

An expanded embodiment of a device according to the invention is shown in FIG. The device initially consists of a first drum rotor 11 and two laterally arranged rotating cutting blades 14 and 15, as has already been described in connection with FIG. 2. Instead of conveying the printed products directly after passing through the two cutting knives 14 and 15, they are transferred to a second, essentially analog drum rotor 21 with cells 22. The axis of rotation 23 of the drum rotor 21 is preferably perpendicular to the axis of rotation 13 of the first drum rotor 11. In the second drum rotor 21, the third edge of the printed products, which is normally parallel to the fold or collar, can now be trimmed by a further cutting knife 24, so that With this device, the multilayer printed products can be trimmed on three sides in a single pass, whereby the advantages of a cutting knife compared to a cutting roller come into play.

A preferred embodiment and mode of operation of the individual cells of the drum rotor will now be explained with reference to FIG. The representation is chosen so that four different situations a) to d) are each shown from two different viewing directions: the right drawing shows a cell 12, in which the viewing direction runs parallel to the axis of rotation 13 of the drum rotor 11, while the left drawing shows the same cell from the direction of arrow D.

FIG. 8a shows a cell 12 which is formed by two essentially radially oriented cell walls 31 and at the same time separates them from the neighboring cells. The cell walls 31 are designed such that they simultaneously serve as counter knives on three sides. The cell is provided with a clamping device 32. In FIG. 8a, the latter is in the inactive state, in which it rests, for example, in an appropriately designed recess in the cell wall 31, so that the printed product 2 can be inserted into the cell. A straightening device 33 serves to shift and align the printed product 2 in the cell 12 so that it assumes the position required for the subsequent cutting process. The straightening device 33 is shown here only schematically. Any arrangement is conceivable which enables the printed products to be aligned in the cells, e.g. a fixed backdrop, a circumferential strap, pusher, etc. (for this purpose, reference is made to Figures 9, 10 and 12). The shape and size of the clamping device 32 are advantageously chosen so that their outer edges essentially match those of the cell wall 31, i.e. coincide with the edges of the counter knife. This will, when the clamp is in the active state, i.e. the printed product 2, as shown in FIG. 6b, is clamped between the clamping device 32 and the cell wall 31, ensures a perfect cutting process, since the printed product is fixed along the entire edge to be trimmed (the part to be cut is hatched in FIG. 8b).

By means of a further straightening device 34, the printed product 2 is aligned with the second cutting knife (not shown) after the first side edge has been trimmed while at the same time loosening the clamping device 32, whereupon the clamping device is activated again and the second side edge is trimmed. In the same way, the printed product is then, for example, by means of a centered in the cell 12 and aligned so that the outer edge can be trimmed.

In the device described above, the cells have a certain, unchangeable size, while the printed products in the cells are shifted and aligned with the cutting devices. However, a solution is also conceivable in which the size of the cells is variable, so that the device can be adjusted to the respective format of the print products to be processed. The cells could just as well be used with separate, e.g. adjustable and / or interchangeable counter knives. It is also conceivable to e.g. to be provided with cutting blades and to use stationary counter knives. The embodiment shown here is only a preferred variant, which is characterized by particular simplicity of construction and corresponding robustness.

FIG. 9 shows a partial section through the device according to the invention, which is preferably provided with a housing 50, and shows a possible configuration of a straightening device. The direction of conveyance is indicated by an arrow. Each of the cells 12 has a movable lateral plunger 41. The plungers 41 cooperate with a stationary link 45, which results in a lateral displacement of the plungers 41 and thus a corresponding displacement of the printed products 2 located in the cells. The plunger 41 are provided at their end facing the link 45 to minimize frictional losses, for example with rollers 42, whereby the restoring force of a spring 43, which interacts with a side panel 44 of the drum rotor, ensures perfect contact between the plunger and the link. At the end of the backdrop - ie when the printed product 2 is in the desired position - the plunger 41 is moved by the spring reset and the clamping device 32 activated, which now fixes the printed product while it is being guided past the cutting knife 14. In addition, FIG. 10 essentially shows a section along the line EE of FIG. 9, the viewing direction being opposite to the conveying direction.

FIG. 11 shows an enlarged detail of a cell with a printed product 2 immediately before the cutting knife 14 engages. It can be clearly seen here how the cell wall 31 simultaneously acts as a counter knife for the cutting knife 14.

A variant of the alignment of the printed products before the outer edge is trimmed by a cutting roller 16 (e.g. in an arrangement according to FIG. 2) is shown in FIG. 12 as a partial section through the drum housing 50 in a side view, the conveying direction being indicated by an arrow. The clamping device 32 is temporarily released, so that the printed products are moved against a fixed or moving link 47 using the gravity and / or centrifugal force and thus assume a defined position, whereupon the clamping device is activated again.

Claims (20)

1. Method for cutting or trimming continuously conveyed, multilayer printed products (2) in a continuous process, in which at least one first knife part (3, 31) is jointly associated with each one or several printed products (2), in which at least one first knife part (3, 31) and the associated printed product (2) are moved at substantially the same speed and are engaged with one another along at least one cutting edge (4), characterized in that the first knife part and the associated printing product are moved past a second, fixed knife part (5, 14, 15, 16, 18, 19), in order to be brought into cutting engagement therewith, so that the printed product is at least cut along an intended cutting edge.
2. Method according to claim 1, characterized in that a plurality of first knife parts (31) is moved at regular intervals on a clearly defined path, whilst the second knife parts are left stationary.
3. Method according to one of the preceding claims, characterized in that the printed products (2) by the at least one first knife part (3, 31) associated therewith are moved past at least one second knife part.
4. Method according to one of the preceding claims, characterized in that at least one first and at least one second knife part are so brought into cutting engagement that the printed products are continuously cut from one end of the intended cutting edge to the other.
5. Method according to one of the claims 2 to 4, characterized in that the at least one second knife part (14, 15, 18, 19) is simultaneously brought into cutting engagement with several first knife parts (31).
6. Method according to one of the preceding claims, characterized in that by modifying the relative position between the at least one first and at least one second knife part, in the plane in which the cutting movement takes place, there is a distribution of the cutting force components corresponding to the printed product to be cut.
7. Method according to one of the preceding claims, characterized in that at least one knife part rotates and by modifying the relative position between the at least one first and at least one second knife part there is a change to the cutting speed along the cutting edge corresponding to the printed product to be cut.
8. Method according to one of the preceding claims, characterized in that the printed products (2) are cut at right angles to their surface.
9. Apparatus for cutting continuously conveyed, multilayer printed products (2) in a continuous process, with several conveying units (12) rotating on a closed path for receiving in each case at least one printed product, the conveying unit (12) containing at least one counterknife (31), the apparatus having means (17, 33, 34, 35, 41, 42, 43, 44, 45, 47) in order to bring the printed products in the conveying units at least along a provided cutting edge into engagement with the at least one counterknife (31), characterized in that along the closed path is provided at least one fixed cutting knife (14, 15, 16, 18, 19, 24), which so cooperates with the at least one counterknife of each conveying unit that the printed products are cut along the at least one intended cutting edge.
10. Apparatus according to claim 9, characterized in that the conveying units (12) are arranged on the periphery of a rotatable drum (11).
11. Apparatus according to claim 10, characterized in that the conveying units (12) are formed by cell walls (31) running radially to the rotation spindle (13) of the drum (11) and are separated from one another, so that they are substantially open laterally and to the outside.
12. Apparatus according to claim 11, characterized in that the cell walls (31) are directly constructed as counterknives.
13. Apparatus according to one of the claims 10 to 12, characterized in that the at least one fixed cutting knife is constructed as a rotatable, circular disk-shaped knife (14, 15, 24), whose rotation axis is substantially parallel to the rotation spindle (13) of the drum (11).
14. Apparatus according to one of the claims 10 to 12, characterized in that the at least one fixed cutting knife is constructed as a rotatable, circular cylindrical cutting roller (16, 18, 19), whose rotation axis is substantially parallel or perpendicular to the rotation spindle (13) of the drum (11).
15. Apparatus according to one of the claims 9 to 14, characterized in that the conveying units (12) have clamping mechanisms (32) for fixing the printed products (2) along the particular lateral edge to be cut.
16. Apparatus according to one of the claims 9 to 15, characterized in that links (17, 45, 47) cooperating with the printed products are provided and make it possible to adjust the position of the printed products (2) contained in the conveying units (12) relative to the cutting knives or counterknives.
17. Apparatus according to one of the claims 11 to 16, characterized in that the individual cutting knives (14, 15, 24, 18, 19) are so constructed or arranged that they are in each case simultaneously in engagement with printed products from several adjacent cells (12).
18. Apparatus according to one of the claims 9 to 17, characterized in that the cutting knives (14, 15, 24, 18, 19) are so constructed or arranged that the edges of the printed products are continuously cut from one end to the other.
19. Apparatus according to one of the claims 9 to 18, characterized in that the position of the fixed cutting knives relative to the counterknives is adjustable.
20. Apparatus according to one of the claims 10 to 19, characterized by a second, rotatable drum (21) with regularly circumferentially arranged conveying units (22), whose rotation axis (23) is preferably perpendicular to that (13) of the first drum (11), the two drums being so arranged that the printed products can be transferred from the conveying units (12) of the first drum (11) into those (22) of the second drum (21) and by at least one fixed cutting knife (24) cooperating with the second drum for cutting a further lateral edge of the printed products (2).

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