EP3398891A1 - Device for producing collections of sheet-shaped printed products, and folding apparatus for folding collections of sheet-shaped printed products - Google Patents

Abstract

Apparatus for producing collections (16) of sheet-like printed products from a supplied strand of material (7), wherein a diverter feeds the product stream via one of at least two collecting cylinders (31, 32) to a take-up cylinder (34), and a folding apparatus (40) with such collection device.

Description

The present invention relates to an apparatus for producing collections of sheet-shaped printed products according to the preamble of claim 1 and a folding apparatus according to the preamble of claim 10.

From the EP 0 257 390 A1 a folding apparatus is known which generates from a fed paper web multi-leaved, folded collections. The folding apparatus comprises a first longitudinal folding device, which folds the supplied web centrally in its length and feeds it to a cross-cutting device. This cross cutter separates correspondingly folded sheets from the folded web. This cross-cutting device has a knife cylinder extending transversely across the folded paper web, which cooperates with a groove cylinder. The knife cylinder contains two offset by 180 ° staggered knife holders, which can be optionally equipped with a knife. With appropriate equipment thus optionally two different section lengths can be generated, which correspond to the full or half the circumference of the knife cylinder.

This transverse cutting device is arranged downstream of a Querfalzeinrichtung whose collecting cylinder cooperates with at least one jaw cylinder. For this purpose, the collecting cylinder is equipped with two sets of grippers, which are arranged on mutually adjustable dashboard carriers. With these grippers, the collecting cylinder takes over the sheets coming from the cross-cutting device and releases them to the folding cylinder. For this, the grippers are actuated via a cam drive. In order to be able to process collections of different thicknesses, the grippers of the collecting cylinder must each be adjusted to the product thickness. This leads to a considerable set-up effort.

Counteracting this disadvantage proposes the DE 101 56 706 A1 a collecting cylinder before, which instead of grippers with punctures as holding organs Is provided. The controllable punctures are made of needle sets. For transporting or collecting the needles are raised relative to the circumference of the collecting cylinder, so that the products can be pinned. For folding and passing the punctures are withdrawn. The movement of the punctures is independent of the product thickness, so that the variability of such a folder is significantly improved in terms of product thickness.

Regardless of the holding system used, this folding apparatus is disadvantageous in that the sheet length is predetermined by the diameter and stocking of the knife cylinder. Changing the stocking is labor intensive and requires a production interruption. A equipped with such a folder digital web press is thus limited in terms of sheet length to a few formats. Although the use of servomotors makes it possible to eliminate the disadvantage of such a format restriction.

Due to the principle, there is a change from a continuous material transport, which is characterized by a constant web speed, to a clock-bound transport of the separated sheets with a constant clock speed. The production of very different product lengths thus requires such high dynamics of different cylinder movements that can not be achieved economically. Counteracting the potential format range curtails the variability of the digital press dramatically.

The object of the invention is therefore to provide a device of the type mentioned, which is freed from the disadvantages listed and allows high variability in terms of product formats with low set-up effort.

The above object is achieved with the features of the characterizing part of claim 1 and in a generic folder with the features of the characterizing part of claim 10. Advantageous developments are specified in the dependent claims.

An apparatus for producing collections of sheet-shaped printed products from a supplied material strand comprises a first transport device, which feeds the material strand to a cross-cutting device. The material strand is formed from a single printed paper web. But it can also consist of several superimposed paths or partial paths. The transport direction corresponds to the longitudinal direction of the strand. The cross-cutting device adjoining this first transport device separates sections from the supplied strand by cutting transversely to the transport direction. Depending on the composition of the supplied strand, the cross-cutting device thus forms successive sheets or sheet packages. Depending on the timing of the supply of the strand by the first transport means and the cutting by the cross cutter bow or bow packages of different lengths can be formed.

Advantageously, the transverse cutting device comprises a cutting cylinder oriented transversely to the transport direction. Thus, in a simple and compact design, a high production capacity can be achieved in the production of different formats.

When viewed in the direction of transport of the printed products, the transverse cutting device is followed by a first collecting cylinder and a second collecting cylinder according to the invention. The conveying path of the printed products leads them either to the first collecting cylinder or to the second collecting cylinder. For this purpose, a controllable switch is provided in front of the collecting cylinders, which determines the conveying path accordingly. Thus, it is possible without interrupting the production, the individually formed by the cross-cutting device sheet or sheet packages each one of the two collection cylinder.

The collecting cylinder known type each have at least one fixing device on its circumference. These fixing devices serve to hold the supplied sheet or sheet packages on the circumference of the respective collecting cylinder and by its rotation following the direction of transport

Supply takeover cylinder. In several rounds of the collecting cylinder before the transfer to the takeover cylinder is a collection process. It is irrelevant whether the fixing of said cylinder are equipped with grippers, needles or other holding elements.

Different diameters of the first collecting cylinder and the second collecting cylinder, in cooperation with the switch, allow the respective sheet or package to be fed to the collecting cylinder whose diameter is best matched to the length of the sheet. The required adjustment of the speed of the collecting cylinder to the arc length is thus significantly reduced. As a result, compared with a device having only one collecting cylinder, which is necessarily adapted to the largest format to be processed, a substantially larger format range is made possible with the same production output. Alternatively, with the same format range compared to the known devices, the production output during the processing of short bends can be significantly increased.

The collecting cylinders transfer the sheets or sheet packages to a subsequently arranged transfer cylinder. This has at its periphery fixing devices similar to the collecting cylinders. Thus, the takeover cylinder beyond the mere removal can be used for further collection processes. It is advantageous to load a common transfer cylinder through both collecting cylinders. Thus, on the one hand, a compact design of the device can be achieved. On the other hand, this arrangement allows different combinations of the individual collecting processes performed by the different cylinders, whereby a high variability of the device is achieved.

The variability with respect to the format sequences and collection schemes that can be processed by the device is further increased by the acquisition cylinder comprising two sets of fixing devices, which are each assigned to one of the preceding collection cylinders. Each set consists of a fixing device or more evenly distributed over the circumference of the transfer cylinder fixing. The related to the scope of the transfer cylinder Distance of the fixing means of a sentence to each other forms its division. The assignment of one set of fixing devices of the takeover cylinder to one of the collecting cylinders permits an optimized design of the set with regard to this collecting cylinder.

Particularly advantageous is a diameter of the respective collecting cylinder, which corresponds to an integer multiple of the associated pitch of the transfer cylinder, wherein the multiple can also be 1. Thus, the optimization of the movements of the collecting cylinder and the takeover cylinder with their fixing devices is particularly simple. A particularly great variability of the device is achieved if the pitch of the first set of fixators corresponds to a non-integral multiple of the pitch of the second set of fixators.

A design of the sets of fixing devices of the transfer cylinder, in which a common fixing device is associated with both sets, is advantageous. In this way, the required diameter of the takeover cylinder and the complexity of the device is reduced in the same range of applications.

An opposite direction of rotation of the collecting cylinder allows a particularly compact arrangement of the collecting cylinder and the takeover cylinder to each other. The direction of rotation of the takeover cylinder is always chosen so that the collecting cylinder feeding the material and the laxative takeover cylinder rotate in opposite directions, so that a safe transfer of the products can take place.

The device is particularly versatile if at least the transverse cutting device is provided with a single drive, so that different length formats can be produced.

The number of collecting cylinders and the associated sets of fixing devices of the takeover cylinder is expressly not limited to two, but can go beyond.

The collecting device described may be part of a folding apparatus. This also includes a roller handling, which unwinds the pressure roller to a web. A longitudinal cutting device cuts this web into a plurality of partial webs, which are guided over one another in a downstream direction in a known manner by means of turning bars to form a strand. This strand is fed to the collecting device with cross-cutting device of the type described. The collecting device below a folding device is arranged, which folds the collections supplied by the collecting device in a known manner according to the principle of Schwertfalzens.

Fig. 1

Sammelvorrichtung in einer Konstellation für lange Erzeugnisse;

Fig. 2

Sammelvorrichtung in einer Konstellation für kurze Erzeugnisse;

Fig. 3

Sammelvorrichtung;

Fig. 4

Übernahmezylinder in einer Konstellation für lange Erzeugnisse;

Fig. 5

Übernahmezylinder in einer Konstellation für kurze Erzeugnisse und

Fig. 6

Falzapparat.

Subsequently, the invention with reference to the figures, to which reference is made with respect to all unspecified details in the description, explained by means of embodiments. These examples are not an exhaustive description of the invention. The figures show schematically:

Fig. 1

Collecting device in a constellation for long products;

Fig. 2

Collecting device in a constellation for short products;

Fig. 3

Collection device;

Fig. 4

Takeover cylinders in a constellation for long products;

Fig. 5

Takeover cylinder in a constellation for short products and

Fig. 6

Folder.

The collector is in Fig. 1 in a configuration for long products 10 and in Fig. 2 in a short product configuration 10 '. Unless otherwise stated, the explanatory notes apply Fig. 1 in the same way for Fig. 2 ,

An import 1 leads to the known manner from several partial webs 6.1, 6.2, 6.3 combined web-like strand 7 of the device. This strand 7 is guided by pairs of rollers, which are each formed of a top roller 11 and a bottom roller 12 and guide the strand 7 and transport. The import 1 leads the strand 7 to a cross cutting device 2, which separates from this sheet packets 9 finite length. The cross-cutting device 2 consists of an upper cutting cylinder 21, which cooperates with a lower cutting cylinder 22. These cutting cylinders 21, 22 extend transversely over the entire width of the strand to be cut 7. They are with each equipped a linear knife 20. The cutting cylinders 21, 22 are as in Fig. 3 shown in drive connected with a controllable drive 401. By changing their speed relative to the web speed of the supplied strand 7 sections 9 different lengths can be generated without setup effort.

As an alternative to the illustrations shown, the transverse cutting device 2 can be formed from a knife cylinder cooperating with a cylinder. It is also possible to employ the separating cylinders with respect to the transporting direction 100 and to equip them with a helical knife, so that the cut on one edge of the strand 7, beginning across the width of the strand 7, proceeds as far as the opposite edge of the strand.

The separated from the supplied strand 7 sheet packages 9 are in a in Fig. 1 shown first position of the transverse cutting device 2 a first collecting cylinder 31 fed. This is arranged rotatably about its axis transverse to the transport direction 100 and has a fixing device 30 on its periphery.

This fixing device 30 is designed in a known manner in order to detect the delivered sheet package 9 in an effective manner and to release it to the subordinate transfer cylinder 34 when it is transferred. By way of example, a puncturing system is shown in greatly simplified form in the figures as a fixing device 30. This puncturing system is designed controllable, so that its needles protrude in an activated state beyond the circumference of the first collecting cylinder 31 also outwardly and in a passivated state against the circumference. As long as the fixing device 30 is activated, it collects for each revolution of the first collecting cylinder 31 individually fed sheet packages 9 in a growing on the circumference of the first collecting cylinder 31 stack to a sub-collection 10th

In the receiving point of the first collecting cylinder 31, a counter-roller 33 is arranged, which cooperates in a manner with the fixing device 30, that the supplied sheet package 9 is reliably absorbed by the first collecting cylinder 31. When passivating the fixing device 30 in Transfer point to the transfer cylinder 34 passes the first collection cylinder 31, this sub-collection 10 to the takeover cylinder 34th

In the in Fig. 2 shown alternative position of the cross cutting device 2 'this leads the separated sheet packets 9 to a second collecting cylinder 32 instead of the first collecting cylinder 31 to. These collecting cylinders 31, 32 are arranged parallel to each other. They are of similar construction and differ essentially by their diameter 301, 302 and thus in the maximum processable length of the fed sheet packages 9. The second collecting cylinder 32 cooperates with the same takeover cylinder 34 as the first collecting cylinder 31. While the transverse cutting device 2, 2 ' represents a switch and the Bogenpakte 9 one of several collecting cylinders 31, 32 supplies, the takeover cylinder 34, these different transport paths together again to a common.

The takeover cylinder 34 is arranged parallel to the collecting cylinders 31, 32 and has a significantly larger diameter than this. At its circumference a plurality of fixing devices 30.1, 30.2, 30.3, 30.4 spaced apart in the circumferential direction are arranged. These correspond in their function and their construction to the fixing devices 30 of the collecting cylinders. The fixing devices 30.1, 30.2, 30.3, 30.4 of the transfer cylinder can be summarized into several sets, each of the takeover cylinder 34 charging collecting cylinder 31, 32 is assigned a set of fixing devices 30.1, 30.2, 30.3, 30.4. A first set here comprises the fixing devices 30.1 and 30.3, which are arranged opposite each other on the circumference of the transfer cylinder 34 and are associated with the first collection cylinder 31.

If the first collecting cylinder 31 is operated by the cross-cutting device 2, this first set of fixing devices 30.1, 30.3 of the take-over cylinder 34 is activated, as is FIG. 4 shows. The remaining fixing devices 30.2, 30.4, which are not associated with the first collecting cylinder 31, remain passivated. If, however, the second collecting cylinder 32 is operated by the cross cutting device 2 ', the associated second set of fixing devices 30.1, 30.2, 30.4 activated, while the non-second collecting cylinder 32 associated fixing device 30.3 remains passivated, as in Fig. 5 shown.

The arc length 101, 102 between two adjacent fixing devices 30.1, 302., 30.3, 30.4 of the same set corresponds to the circumference of the associated collecting cylinder 31, 32. Thus, the peripheral speeds of the collecting cylinders 31, 32 and the takeover cylinder 34 can be kept the same, and their drives mechanically coupled.

In principle, the takeover cylinder 34 on each of its fixing devices 30.1, 30.2, 30.3, 30.4 is suitable for collecting printed products in the manner explained with reference to the first collecting cylinder 31. The interaction of a collection process optionally on one of several collective cylinders 31, 32 to sub-collections 10, 10 'and then an additional collection process on the takeover cylinder 34 to collections 16 allows a very large variety of collection schemes. Thus, the collecting device with respect to a given sequence of printed images on the supplied strand 7 is very versatile.

In an in Fig. 3 shown alternative embodiment of the stationary cross-cutting device 2 is downstream of a switch 5. This switch 5 promotes with the help of an adjustable guide element 15, the respective sheet package 9 either one of the collecting cylinders 31, 32 to. To control the adjustment of the guide element 15, the switch 5 is connected to the controller 400 of the device. Both the cross-cutting device 2 and the collecting cylinder 31, 32 and the takeover cylinder 34 each have a single drive, which are connected to the same controller 400. Compared to the in the Fig. 1 and 2 shown embodiment, the directions of rotation of the collecting cylinders 31, 32 and the takeover cylinder 34 are in opposite directions.

The schematic representation of Fig. 6 shows circumferential variable folder with a collection device, as they are Fig. 3 equivalent. A paper roll 14 is separated immediately after a settlement of a longitudinal cutting device 36 by means of a pair of circular blade 13 in two mutually parallel partial webs 6.1, 6.2. With the help of several guide rods 38 and turning bars 39 a Guiding device 37, these partial webs 6.1, 6.2 are brought together one above the other and into a strand 7.

The strand 7 thus formed is separated by a cross-cutting device 2 in sheet packets 9 and then collected by the subsequently arranged collecting device 3 in the manner already described to collections 16. The collections 16 are fed by a further transport device, not shown, to the folding device 40 arranged downstream of the collecting device 3. This works in a known manner according to the Schwertfalzprinzip. The folding blade 41 extends in the transport direction 100 of the supplied collection 16 and is arranged above the feed plane. The folding rollers 42 cooperating with the folding blade 41 are arranged below the feed plane, so that a change of the transport direction 100 of the printed products results from a horizontal direction to a vertical direction. The folded collections 16 are supplied to further devices of known type, not shown.

Claims (10)

At least comprising apparatus for producing collections (16) of sheet-shaped printed products A first transport device (1) for feeding a strand (7), which is formed from a single web (6) or several combined webs (6) and / or sub-webs (6.1, 6.2, 6.3), A transverse cutting device (2, 2 ') extending downstream over at least the width of the supplied strand (7) in the transport direction (100) of the first transport device (1) for separating successive sheets and / or sheet packets (9, 9') from the supplied strand (7), A first collecting cylinder (31) rotatable about a first axis of rotation (201) with a first diameter (301), comprising at least one fixing device (30) arranged on its circumference for holding a sheet fed by the cross-cutting device (2, 2 ') and / or or sheet package (9, 9 ') on the lateral surface of the first collecting cylinder (31) and • a fixing cylinder (34) rotatable about a second axis of rotation (200), comprising a plurality of fixing devices (30.1, 30.2, 30.3, 30.4) distributed around the circumference of the transfer cylinder (34), the second axis of rotation (200) of the transfer cylinder (34) being connected to the first axis of rotation (201) of the first collecting cylinder (31) is arranged substantially parallel, so that sheet and / or sheet packets (9, 9 ') are transferred from the first collecting cylinder (31) to the takeover cylinder (34), marked by At least one second collecting cylinder (32) with a second diameter (302) rotatable about a third axis of rotation (202), comprising at least one fixing device (30) arranged on its circumference for holding a sheet fed by the cross cutting device (2, 2 ') and or sheet package (9, 9 ') on the lateral surface of the first collecting cylinder (32), wherein the third axis of rotation (202) of the second Collecting cylinder (31) to the second axis of rotation (200) of the takeover cylinder (34) is arranged substantially parallel, so that sheet and / or sheet packets (9, 9 ') of the second collecting cylinder (32) to the takeover cylinder (34) are passed , and A controllable switch (5) arranged between the first transporting device (1) on the one hand and the first collecting cylinder (31) and the second collecting cylinder (32) on the other hand, optionally connecting the sheet and / or sheet packages (9, 9 ') to the first collecting cylinder (11) 31) or the second collecting cylinder (32) feeds. Apparatus according to claim 1, characterized in that the takeover cylinder (34) at least two sets each uniformly over the circumference of the takeover cylinder (34) distributed fixing devices (30.1, 30.2, 30.3, 30.4), wherein on the circumference of the takeover cylinder (34). The distance between the fixing devices (30.1, 30.3) of the first set relative to one another forms a first graduation (101) and the distance between the fixing devices (30.1, 30.2, 30.4) of the second set relative to the circumference of the transfer cylinder (34) is a second graduation (101st) ). Apparatus according to claim 1 or 2, characterized in that the first division (101) corresponds to a non-integer multiple of the second division (102). Device according to one of the preceding claims, characterized in that at least one fixing device (30.1) of the transfer cylinder (34) at least two sets each uniformly over the circumference of the transfer cylinder (34) distributed fixing devices (30.1, 30.2, 30.3, 30.4) is assigned. Device according to one of the preceding claims, characterized in that the first diameter (301) of the first collecting cylinder (31) an integer multiple of the first pitch (101) and the second diameter of the second collecting cylinder (32) a integer multiples of the second pitch (102) of the takeover cylinder (34). Device according to one of the preceding claims, characterized by an opposite direction of rotation of the first collecting cylinder (31) and the second collecting cylinder (32) and a controllable direction of rotation of the takeover cylinder (34). Device according to one of the preceding claims, characterized in that at least the transverse cutting device (2, 2 ') is drive-connected to a controllable individual drive (401) in order to successively separate sheet and / or sheet packages (9, 9') of different length from the fed strand (40). 7) to separate. Device according to one of the preceding claims, characterized in that the transverse cutting device (2, 2 ') has at least one cutting cylinder (21, 21', 22, 22 '), wherein the at least one cutting cylinder (21, 21', 22, 22 ') extends at least over the width of the supplied strand (7). Device according to one of the preceding claims, characterized by a controller (400), wherein the controller (400) for transmitting data at least with the controllable switch (5) and with the controllable single drive (401) of the cross cutting device (2, 2 ') connected is. Folding apparatus for folding collections (16) formed from printed products, comprising at least A roll unwinding for unwinding at least one roll (16) printed product as a web (6), A longitudinal cutting device (36), which is subsequently arranged in the transport direction (100) of the roll unwinding, with at least one knife (13) for dividing the web (6) fed from the roll unwinding into a plurality of partial webs (6.1, 6.2, 6.3), A guiding device (37) with guide rods (38) and subsequently arranged in the transporting direction (100) of the longitudinal cutting device (36) Turning bars (39), which merges the partial webs (6.1, 6.2, 6.3) into a multilayered strand (7), A transverse cutting device (2, 2 ') extending in the direction of transport (100) of the guide device (37) and extending at least over the width of the strand (7) supplied by the introduction device (1) for separating successive sheets and / or sheet packets ( 9, 9 ') of the supplied strand (7), A first collecting cylinder (31) having a first diameter (301), which is subsequently arranged in the transporting direction (100) of the transverse cutting device (2, 2 ') and rotatable about a first axis of rotation (201), having at least one fixing device (30) arranged on its circumference for holding a sheet and / or sheet package (9, 9 ') supplied by the cross-cutting device (2, 2') on the lateral surface of the first collecting cylinder (31), A fixing cylinder (34) arranged following the first collecting cylinder (31) in the direction of transport (100) and rotatable about a second axis of rotation (200), have a plurality of fixing devices (30.1, 30.2, 30.3, 30.4) distributed on the circumference of the transfer cylinder (34), wherein the second rotation axis (200) of the takeover cylinder (34) is arranged substantially parallel to the first rotation axis (201) of the first collection cylinder (31) so that sheets and / or sheet packages (9, 9 ') are received by the first collection cylinder (31 ) are transferred to the takeover cylinder (34), and A folding device (40) arranged below in the direction of transport (100) of the devices for producing collections (16), at least comprising a folding blade (41) and a pair of folding rollers (42) arranged below the folding blade (41) in the direction of transport (100), marked by At least one second collecting cylinder (32) with a second diameter (302) rotatable about a third axis of rotation (202), comprising at least one fixing device (30) arranged on its circumference for holding one of the transverse cutting devices (2, 2 ') Sheet and / or sheet package (9, 9 ') on the lateral surface of the first collecting cylinder (32), wherein the third axis of rotation (202) of the second collecting cylinder (31) to the second axis of rotation (200) of the takeover cylinder (34) arranged substantially parallel is, so that sheet and / or sheet packets (9, 9 ') of the second collecting cylinder (32) are transferred to the takeover cylinder (34) and • in the transport direction (100) the first collecting cylinder (31) and the second collecting cylinder (32) upstream, controllable switch (5) which the sheet and / or sheet packages (9, 9 ') either the first collecting cylinder (31) or the second collecting cylinder (32) feeds.

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