EP1930162B1 - Devices and method for drawing at least one web of material or at least one web strand into a folding apparatus - Google Patents

Abstract

The apparatus has a cross cutting device for separating a web of material that is transported through an upper structure and folded on a folding funnel, into individual products. The cutting device includes two parallel guide rails (9) that are guided along the folding funnel for guiding the web through the cutting device. Holding parts is displaceably guided on a path of the web through the upper structure. An independent claim is also included for a method for drawing a web of material or web strand into a folding apparatus.

Description

The invention relates to a device and method for drawing at least one material web or of at least one web strand into a folding apparatus according to the preamble of claim 1, 31 or 33.

A folder such. B. off WO 00/56652 A1 Known comprises a superstructure, in which merged from one or more printing units paper webs combined, possibly longitudinally cut and placed over each other, at least one former, on each of which in the superstructure of one or more paper webs merged web track is folded longitudinally, and a Cross-cutting device in which the längsgefalzte web is broken down into individual products. Frequently, the cross-cutting device is realized by a rotating knife cylinder, the blades cooperate for cutting the web track with an abutment on a gripper or folding blade. The grippers of this cylinder retain the products singulated by the cross-cutter on the surface of the cylinder and convey them to a transfer nip between the folding blade cylinder and a jaw cylinder where a folding blade extends out of the folding blade cylinder to move the product held thereon along a transverse centerline into a jaw to introduce the jaw cylinder and so fold across.

To retract a paper web into a press is out EP 05 53 740 B1 known to use a holding part in the form of a rail-guided link chain piece to which the obliquely torn off leading end of the recovering web is attached. The rail runs next to the intended path of the web through the printing press to the superstructure of a folder.

There will be the train, as in the already mentioned WO 00/56652 A1 taken over, by a traction device in the form of two thorn-studded belt whose spikes impale the web at their lateral edges and pull on an insertion roller at the upper edge of the former and the former itself.

By independent traction means are provided on the former of the guide rail and the holding member guided thereon, it is achieved that the former can each be moved in adaptation to the width of the webs to be processed so that a web folded thereon occurs exactly in the center of the cross-cutting device. This is important for a trouble-free functioning of the cross-cutting device and especially the subsequent transverse folding device.

The DE 42 10 190 A1 discloses a cutting device with integrated switch, which is arranged between draw rollers and folding cylinders.

The DE 101 28 821 shows a device for merging paper webs during retraction.

The US 3 125 335 A discloses a device for drawing webs of material by means of tapes.

The DE 42 10 190 A1 discloses a cutting device with integrated switch, which is arranged between draw rollers and folding cylinders.

The EP 0 418 903 A2 describes devices for drawing multiple webs in a web-fed rotary printing press from the roll changers to before the formers by means of belts.

By the DE 1 611 283 A a device for producing cut specimens is known in which two cutting cylinders are arranged one behind the other.

The EP 1 334 940 A1 discloses a longitudinal folding hopper with a material web feeding device. In this case, a material web is guided by a first catchment means until shortly before the Längsfalztrichter and taken over there by a second, sting-occupied catchment. A continuous guide rail from the roll changer to the Längsfalztrichter without transfer is not provided.

The invention has for its object to provide a device and method for drawing at least one web or at least one web strand in a folder.

The object is achieved by the features of claim 1, 31 or 33.

The guide rail guided along the former can guide the web strand at least right up to the cross cutting device; Beyond that aids for automated retraction of the strand are no longer necessary because there is no longer continuous strand, but only individual products.

In order to ensure a proper orientation of the holding part in relation to the material web held by it when passing over the former, the guide rail is preferably twisted at the level of the former, preferably by about 90 °.

In order to adapt the folder to the processing of web cords of different widths and to be able to guide them centered by the cross cutting device and cross folding device, the former is preferably displaceable parallel to the longitudinal axis of the cross cutting device. Thus the guide rail of a Adjusting movement of the former is able to follow, a lying in the running direction of the web strand in front of the former hopper section of the guide rail should be stretchable.

In order to ensure a precise feed of the web strand to the cross-cutting device, regardless of a respective displacement of the former, the guide rail should be present between the input of the former and the cross-cutting device, a hinge portion.

The joint portion can be realized in a simple manner by one or more lateral cuts in the guide rail. This allows in particular a one-piece implementation of the guide rail over the joint section.

Preferably, the guide rail has a groove, in particular a longitudinal groove with a bottom and two side walls, in which the holding part is guided, and the cuts cut through each one of the side walls and the bottom, so that the not severed side wall is comparatively easily flexible.

According to a first embodiment of the invention, the guide rail is extended beyond the cross-cutting device, so that a web strand can be pulled through the cross-cutting device with the aid of a holding part guided on the guide rail. The cross cutting device must then be in an open position during the drawing of all webs of the web strand, and only when the webs are fully retracted, the cross cutting device can be set in motion to separate white waste forming the leading portion of the web strand.

Alternatively, in front of the cross-cutting device, a capping device for separating leading white waste from the web strand can be provided, and an input of the Cross-cutting device is arranged in extension of the passage direction of the web strand through the capping device, so that after the separation of the white waste the usable part of the web strand enters the cross cutting device without requiring a guide through the guide rail.

In order to make the insertion of the capped web strand into the cross cutter simple and safe, its entrance is preferably located vertically below the cap means so that the tip (beginning of the web) of the useful part of the web strand is guided by gravity into the entrance of the cross cutter.

In this embodiment of the folding apparatus, the guide rail preferably has a bend between the capping device and the input of the cross-cutting device and runs past the entrance of the cross-cutting device. This design makes it possible to start the cross-cutting device and its subsequent parts of the folder simultaneously with upstream parts of the folder or the entire printing press, even before the webs to be recovered have reached the cross cutter, so that the time between the beginning of the Einziehvorgangs and reaching shortened by stationary operating conditions and thus the scope of the start-up waste is reduced.

An arranged in extension of the guide rail beyond the former hopper memory for receiving holding parts allows it to retract shortly after a pull several material webs, without that in the meantime the holding part of a web would have to be moved back to its starting point to the guide rail for the holding part of another material web vacate.

The memory can be particularly space-saving formed by a spiral or helical rail piece, which is able to a holding part or to receive several holding parts in succession.

Expediently, the storage device is preceded by a separating device for separating the holding parts from their respective material webs, so that the leading sections of the material webs entrained by the holding parts do not have to be accommodated in the store as well.

When the guide rail is bent past the entrance of the cross cutter, then the separator is conveniently located on the guide rail between the bend and the store.

The guide rail can extend continuously from a reel changer of a printing unit upstream of the folder into the folder.

In order to be able to process bundles of several material webs, the superstructure of the folding apparatus preferably has several ways, on each of which at least one material web can be guided through the superstructure and to the cross cutting device, and a plurality of rail pieces running along each of these paths unite in front of the Cross cutting device with the guide rail.

In order to correctly guide the holding parts of the different material webs at the joining points, in particular when the holding parts are transported back to their starting points after the material webs have been pulled in, a turnout is preferably arranged at the joining points of the rail pieces.

In at least one of the plurality of paths, an adhesive preparation device is preferably arranged upstream of a connection point, which serves to make a web strand passing through it locally tacky, so that it adheres to a second, already drawn-in web strand.

The adhesive preparation device may be an adhesive tape dispenser for a double-sided adhesive tape or a glue dispenser.

In order to actuate the adhesive preparation device in time, it is preferably associated with a sensor for detecting a web start that passes it.

• eine erste Materialbahn wird an der Führungsschiene zu einer Stelle geführt, an der sich eines der Schienenstücke mit der Führungsschiene vereinigt,
• eine zweite Materialbahn wird an dem Schienenstück zu eben dieser Stelle geführt und an der ersten Materialbahn befestigt, und
• die aneinander befestigten Materialbahnen werden an der Führungsschiene weitergeführt und in die Querschneideinrichtung eingeführt.

The drawing of webs of material into a folding apparatus as described above preferably comprises the following steps:

• a first material web is guided on the guide rail to a point at which one of the rail pieces unites with the guide rail,
• a second material web is guided on the rail section to just this point and attached to the first material web, and
• the material webs fastened to each other are continued on the guide rail and introduced into the cross-cutting device.

It is not necessary, of course, that one of the material webs is stopped between the various steps; Rather, all webs are preferably continuously moved from the beginning of the feeding until reaching the cross-cutting device.

Conveniently, the entry of the material webs is synchronized with each other so that the second material web is only guided to the junction when the holding part of the first material web has passed this point and thus does not hinder the movement of the holding part of the second material web.

Also conceivable is retraction, in which first a first material web is guided on the guide rail to a point at which one of the rail pieces united with the guide rail, and if the holding part of the first material web has passed this point, a second material web on the rail section is guided to this point and from there on the guide rail to the cross cutting device.

The material webs can be passed through the cross-cutting device, in which case the cross-cutting device expediently remains at rest until all material webs have been pulled through, so that no holding part is damaged by the cross-cutting device. Alternatively, the webs of material can pass through a capping device upstream of the cross-cutting device and initially past the cross-cutting device with the aid of the guide rail, and only when the tips of all the material webs held on the holding parts have passed the capping device is it actuated to feed the strand of material webs caps and the leading end resulting from caps entering the cross cutting device.

If, during the drawing in, the cross-cutting device is already moved in the right direction, it can correctly separate it into products from the moment when the web strand begins to enter the cross-cutting device.

In order to additionally shorten the starting operation of the folder or a printing machine containing the folder and to reduce the amount of startup waste, a pair of draw rollers of the printing machine or folder is preferably turned off during the drawing of a web, but as soon as the passage of the leader End of the web or of the web strand is detected by the Zugwalzenpaar, employed and so controlled driven that a tension exerted by the Zugwalzenpaar approaching a setpoint for continuous printing operation target value.

Embodiments of the invention are illustrated in the drawings and will be described in more detail below.

Fig. 1

eine schematische Seitenansicht einer Vorrichtung zum Einziehen;

Fig. 2

eine Detailansicht einer Führungsschiene und eines in der Führungsschiene geführten Halteteils für eine einzuziehende Materialbahn;

Fig. 3

eine Detailansicht der Vorrichtung in der Perspektive der Fig. 1;

Fig. 4

eine Detailansicht des Eingangsbereichs des Falztrichters;

Fig. 5

eine partielle Frontalansicht der Vorrichtung;

Fig. 6

eine partielle Frontalansicht eines Oberbaus mit zwei Falztrichtern;

Fig. 7

eine Abwandlung der Vorrichtung aus Fig. 5;

Fig. 8

eine zu Fig. 2 analoge Detailansicht des Falzapparats bei der Verarbeitung von Bahnsträngen mit reduzierter Breite;

Fig. 9

eine Detailansicht einer Führungsschiene in Höhe des Ausgangsbereichs des Falztrichters;

Fig. 10

einen Querschnitt der Führungsschiene;

Fig. 11

ein Ausführungsbeispiel einer Vorrichtung zum Einziehen;

Fig. 12

eine vorteilhafte Ausführung einer Kette.

Show it:

Fig. 1

a schematic side view of a device for retraction;

Fig. 2

a detailed view of a guide rail and guided in the guide rail holding part for a material web to be collected;

Fig. 3

a detailed view of the device in the perspective of Fig. 1 ;

Fig. 4

a detailed view of the entrance of the former;

Fig. 5

a partial frontal view of the device;

Fig. 6

a partial frontal view of a superstructure with two formers;

Fig. 7

a modification of the device Fig. 5 ;

Fig. 8

one too Fig. 2 analogous detail view of the folder in the processing of webs of reduced width;

Fig. 9

a detailed view of a guide rail in height of the output region of the former;

Fig. 10

a cross section of the guide rail;

Fig. 11

an embodiment of a device for retraction;

Fig. 12

an advantageous embodiment of a chain.

Fig. 1 shows a schematic side view of a folding apparatus according to the present invention. One of a printing unit, not shown, web 01, z. B. web 01 passes through a chill roll stand 02 and reaches a superstructure 03 of the folder. The superstructure 03 comprises a longitudinal cutter 04 for disassembling the incoming paper web 01 into a plurality of juxtaposed partial webs, a turning deck 06, in which the partial webs of the paper web 01 and possibly further, unillustrated, paper webs rearranged, transversely to the direction (from left to right in of the Fig. 1 ) and / or turned and then superimposed. From the turning table 06, the path of the paper web 01 extends over an arrangement of compensating rollers 07 for web length compensation and traction control to a former 08.

Forming hopper 08 and compensating rollers 07 are in a common frame in the lateral direction of Fig. 1 traced and are to clarify this fact in the Fig. 1 shown twice, in staggered positions.

From the exit of the former 08, the paper web 01 runs downwards through a cross-cutting device 24 and a transverse folding device of per se known, not to be explained more precisely at this point structure. Along the path of the paper web 01 along a guide rail 09 extends in the Fig. 1 represented as a thick black line. The guide rail 09 is shown from its entry into the chill roll stand 02 and to the lower end of the former 08; Preferably, it extends without interruption from the paster of a folder upstream of the folder, in the Fig. 1 not shown printing unit to the former 08 or beyond. The guide rail 09 has a U-shaped or, as in Fig. 2 shown, or C-shaped cross-section, in whose groove 23, in particular longitudinal groove 23 each have a chain piece 51 is guided. The chain piece 51 is constructed of alternating one- or two-segmented members 52; 53, of which at least one carries out of the groove 23 extending arm 19. In Fig. 2 Two adjacent links 53 common carry an arm 19. Chain piece 51 and arm 19 are hereinafter also referred to as holding part 51, 19. A hook at the end of the arm 19 is provided to fasten, with the aid of a loop wrapped around it, the leading end 54 of a paper web 01 to be newly collected or a draw-in tip connected to the leading end 54.

The single-segment members 52 are elastic in itself, z. B. by being made in one piece of an elastic material, or by a (in the Fig. 2 not shown) elastic center piece of spring steel or the like, and thus allow a twisting of the chain piece 51 about an axis parallel to the longitudinal direction of the guide rail 09 axis and a bend of the chain piece 51 about an axis perpendicular to the plane of the paper web 01 axis.

On the guide rail 09 motors (not shown) are mounted at regular intervals, each carrying a sprocket, which through a gap in the side of the guide rail 09 in the groove 23 and possibly between the members 52, 53 at the location of the sprocket located chain piece 51 engages. The length of the chain piece 51 is chosen slightly larger than the distance between two successive sprockets along the guide rail 09, so that it is ensured that when the chain piece 51 is conveyed along the guide rail 09, always at least one sprocket with the chain piece 51 is engaged and this drives. Thus, it is sufficient to retract a paper web 01, the leading end 54 to each of the groove 23 projecting arm 19 of a chain piece 51 to fix and then move the chain piece 51 along the guide rail 09 in motion to the Feed in paper web 01.

Fig. 3 shows in an enlarged view in the same perspective as Fig. 1 the former 08 and its surroundings. The course of the guide rail 09 or one of its retracted paper web 01 is in Fig. 3 drawn as a dotted line. At a merge roll 11, two more rail pieces 12 meet; 13, shown as a dotted or evenly dashed line, with the guide rail 09 together. At each of the rail pieces 12; 13 is located just before the junction point with the guide rail 09 a sensor 14, z. B. a photocell 14 for detecting the presence of a retracted paper web 01 and a Klebvorbereitungseinrichtung 16 for applying adhesive 15. The adhesive preparation device 16 may be designed to apply a strip of liquid adhesive on the leading portion of a paper web 01 along the rail piece 12 and 13 is passed by her; a possible structure of such a device is z. In EP 04 77 769 B1 described. Alternatively, the adhesive preparation device 16 would also be an adhesive tape dispenser which, as soon as the photocell 14 indicates the arrival of a paper web 01, is displaced in the width direction of the paper web 01 in order to unroll a strip of double-sided adhesive tape.

The adhesive preparation device 16 may also consist of a plurality of adhesive spray nozzles, which are distributed across the width of the paper web 01 and each of which a photocell 14 is assigned to each at the moment when the leading edge of a paper web 01 passes one of the adhesive nozzles, this to cause an adhesive dose to be sprayed onto the paper web 01. This is in particular in the area lying above the former 08 of Fig. 5 to recognize.

The point in time at which the paper web 01 guided along the rail section 12 strikes the combining roller 11 is selected such that at this point in time a chain piece 51, that has already fed along the guide rail 09, 13 running paper web 01, the unification roller 11 has passed, so that the coming of the rail section 12 chain piece 51 switch to the guide rail 09 and can be further promoted on this.

As soon as this chain piece 51 has completely passed the combining roller 11, a further paper web can be introduced in a corresponding manner via the rail section 09, 13 and adhered to the paper webs 01 already running over the combining roller 11.

The web strand thus obtained passes through a separating device 17, z. B. a hopper-separating device 17 with a rotating knife and an abutment roller, which serves on all passing paper webs, the tip of which is already adhered to a paper web 01 retracted further than itself, d. H. in particular via the rail pieces 12; 13 supplied paper webs, the no longer needed at this point connection between the arm 19 and the top of the paper web to separate.

At a hopper inlet roller 18, the web strand is deflected again and reaches the sloping downwardly tapered surface of the former. 08 While the web strand is pulled over the side edges of the former 08, its orientation changes; from one to the level of Fig. 3 In a substantially vertical orientation upstream of the hopper inlet roller 18 is a to the plane of the Fig. 3 essentially parallel orientation. In order to be able to guide the paper web 01 over this change of orientation, the guide rail 09 is twisted by 90 ° in a section 21 following the funnel inlet roller 18, for the sake of better depiction being shortened in the longitudinal direction of the guide rail 09 Fig. 4 is shown. For ease of orientation, a piece of the hopper inlet roller 18 and the former 08 are shown; the axis of the hopper inlet roller 18 is parallel to the plane of Fig. 4 aligned. After passing through the hopper inlet roller 18 is the Groove 23 of the guide rail 09 initially still facing the hopper inlet roller 18, and the arm 19 of a holding member protrudes from the groove 23 to the funnel inlet roller 18 ago. In the twisted portion 21, the groove 23 turns in the perspective of FIG Fig. 4 gradually forward, and bolts 22 and links 52; 53 of the trapped in the groove 23 chain are visible. When the twisted portion 21 has passed through, the orientation of the chain piece 51 is rotated by 90 ° and the arm 19 supported by it is transverse to the plane of FIG Fig. 4 in front. The three in the Fig. 4 mind shown not three arms 19 of the same chain piece 51, but one and the same arm 19 in different phases of movement along the guide rail 09. The twist is achieved that the paper webs 01 even after passing through the former 08 still exactly be guided.

The further course of the guide rail 09 is better on the basis of Fig. 5 to recognize the same structure as Fig. 3 from a 90 ° perspective. From the lower tip of the former 08, the guide rail 09 extends vertically downwards between conveyor rollers which are offset from each other during web feeding so as not to interfere with the passage of an arm 19 supporting a web tip. The guide rail 09 is guided past the cutting gap of a cross-cutting device 24 so that the paper webs 01 are introduced into the cutting gap of this cross-cutting device 24. The cross-cutting device 24 comprises a cylinder 26, z. B. knife cylinder 26 and a cylinder 27, z. B. gripper cylinder 27 and / or folding blade 27, are arranged on the abutment, not shown, hard rubber, which cooperate with the knives of the knife cylinder 26 when the cross-cutting device 24 is in operation. The cylinder 27 is preferably designed as a folding blade cylinder 27 and has holding elements, for. As grippers or punctures. During the retraction of the paper webs 01 are the cylinder 26; 27 of the transverse cutting device 24 in the illustrated position with knives 28 of the knife cylinder 26 aligned substantially on a line parallel to the guide rail 09, so that between the Cylinders 26; 27 is a gap open through which the paper webs 01 can be pulled.

An advantageous embodiment of the chain 51 is in Fig. 12 shown. The chain 51 has respective rollers mounted on bolts 22, wherein the bolts 22 are connected by means of tabs. Thus, the chain 51 can not only perform a pivoting movement about the longitudinal axes of the bolt 22, z. B. the holes in the tabs slightly larger than the diameter of the pin 22, so that the chain 51 is transversely to the running direction or in the longitudinal axis direction of the bolt 22 curvable. In the curved state, this results in a maximum radius of curvature R51 of 1000 mm or, preferably, less than 600 mm, particularly preferably less than 500 mm.

It is also possible, the bolt 22 in its longitudinal direction with different diameters, in particular crowned execute.

Between the lower tip of the former 08 and the entrance of the cross cutter 24 are in Fig. 4 two further union points 29; 31, at which in each case a further rail section 32; 33 meets the guide rail 09. These rail pieces 32; 33 serve to introduce more railway lines, the z. B. have passed through other, not shown formers of the folder. To attach this approached web strands on the run on the guide rail 09 are also the rail sections 32; 33 each equipped with photocells 14 and adhesive preparation devices 16.

A in construction and function of the hopper-separating device 17 corresponding separator 30, z. B. a fold-separating device 30 is disposed just before and behind the transverse cutting device 24 on the guide rail 09. The front seam separating device 30 serves to separate the rail pieces 32; 33 supplied web strands of their holding parts; the rear separates the first fed Paper web 01, which forms the tip of the web strand entering the cross cutting device 24, from its holding part.

When all the paper webs 01 are retracted through the crosscutting device 24, the crosscutting device 24 can be set in motion. With the first cut, the tips of all paper webs 01 of the drawn-through web strand are separated.

At the latest, after all holding parts have been released from their respective paper webs 01, they are started to move on the guide rail 09 or the rail pieces 12; 13; 32; 33 back to their respective starting point. In order to ensure that exactly one holding part is returned to each starting point, points 34 are provided at the joining points, the position of which is automatically controlled in order to convey each holding part back to a starting point intended for it.

Fig. 6 shows in one too Fig. 4 analog perspective, an embodiment of the folder with two juxtaposed formers 08 for processing four-page wide paper webs 01. In this embodiment, each of the former 08 is assigned its own guide rail 09 for guiding paper webs 01 by the cross-cutting device 24. In the embodiment according to the invention, the two guide rails 09 are united before passing through the cross-cutting device 24; An advantage of the parallel guided guide rails 09 is that in each case two holding parts can pass through the cross cutting device 24 simultaneously, so that the retraction of the paper webs 01 takes less time, and that the total amount of paper that must be pulled until the holding parts of all paper webs 01 the cross cutting device 24 has happened, is significantly reduced.

Fig. 7 and 11 show alternative embodiments of the course of the guide rail 09 at the entrance of the cross cutting device 24. The input of the cross cutting device 24 is preceded by a capping device 36 for capping the pulled-through web strand. Below the capping means 36, the guide rail 09 has a curved portion 37 and extends above a baffle 38 in the lateral direction to a separating device 39, in this case the head portion of each she dissolves the paper web 01 of her holding part. The track strand which has become unguided on the other side of the separating device 39 falls freely and is ejected from the folding apparatus; the holding member is further conveyed into one or more stores 41, shown here as a spirally wound guide rail. An alternative space-saving design of the memory 41 is a helically curved guide rail, preferably with respect to the axes of the cylinder 26; 27 parallel longitudinal axis.

In this embodiment, the cylinder 26; 27 of the cross-cutting device 24 already phase-synchronous with draw rollers of the folder or upstream parts of the printing press rotate before all the paper webs 01 are finished retracted. Once this is done, the capping device 36 once severed the web strand. At the same time, a switch 42 arranged in the input gusset of the cross-cutting device 24 transitions from its position shown in solid lines to the dashed line in order to securely insert the newly formed leading edge of the web strand into the cross-cutting device 24. Since this can already run at the time of capping the web strand with a rotational speed adapted to its conveying speed, the time required to reach stationary printing conditions and thus the amount of waste generated when the printing press starts up are shortened.

In order to be able to reduce this amount even further, pairs of draw rolls, which have a paper web 01 on the way from the roll changer to the cross-cutting device 24, can be used passes, and which are turned off during retraction of the paper web 01, sensors such as the photocells 14 are provided for detecting the presence of the paper web 01, which, as soon as they detect the passage of a paper web 01 through the Zugwalzenpaar, cause the draw rollers hired each other and are driven to produce a predetermined tension on the respective paper web 01. Thus, already during the drawing in of the paper webs 01, an adjustment of their tensile stress to values desired for the steady-state printing operation can be started, as a result of which the time required for attaining these stationary conditions is also shortened.

If paper webs 01 of different widths are to be processed with the folder, then it is important for trouble-free operation that these paper webs 01 pass through the cross-cutting device 24 and the subsequent transverse folding device exactly in the middle. For this is already in connection with above Fig. 1 mentioned displaceability of the former 08 in one of the axes of the cylinder 26; 27 or the cutting direction of the cross cutter 24 parallel direction required. The juxtaposition of Fig. 3 and 8 clarifies this. In Fig. 3 is the position of the former 08 suitable for a paper web 01 with the maximum processable width in the folder width. If, at the same position of the former 11, a narrower line would be processed by 2a, then (in the perspective of FIG Fig. 3 ) each on the left edge of the cross-cutting device 24, a strip of the width a unused, while the longitudinal fold like a paper web 01 maximum width would come to rest on the right edge of the cross-cutting device 24. In order to properly insert such a narrow paper web 01 into the cross cutter 24, it is necessary, as in FIG Fig. 8 shown, the frame, the former, the joining roller 11, the rail pieces 12; 13 and the compensating rollers 07 carries to move a distance a / 2 to the left. To make this possible, the guide rail 09 in a region 43 (see Fig. 1 ) telescopically extendable between the turning deck 06 and the compensating rollers 07 or in any other suitable manner variable in length and respectively in areas 44; 46 at the top or at the foot of the former 08 in the manner of a hinge portion 44; 46 bendable designed to allow in any position that can take the former 08, a smooth passage of the holding parts by the folder to the memory 41.

A preferred embodiment of such a flexible guide rail 09 is based on the FIGS. 9 and 10 explained. It shows the Fig. 9 a plan view of a flexible portion 44 or 46 and Fig. 10 a section through the guide rail of Fig. 9 at the height of the line X - X of the Fig. 9 , The cutting plane is laid by one of a plurality of cuts 47, which are formed in the flexible region 44 and 46 to a plurality of alternately from different sides of the guide rail 09, and respectively cut through the side walls 48 thereof. Each remaining in the amount of cuts 47 remaining side wall 48 is much easier flexible than the non-cut guide rail 09, and above all, it allows a controlled bending of the guide rail 09 in a plane without simultaneous twisting.

A configuration of the guide rail 09, in which you above the flexible portion 44; 46 lying portion is bent to the left, is as a dotted outline in Fig. 8 shown. The cuts 47 are alternately narrowed or widened depending on the orientation. To illustrate the principle, the width of the cuts 47 and the amount of bending are exaggerated; in practice, the width of the cuts 47 and their deformation must not be so strong that the smooth passage of the chain links is endangered by the groove 23 thereby. This requirement is, however, to meet without difficulty, since the required bending freedom of the guide rail 09 is not more than a few degrees and the expansion of the individual cuts 47 in a bend, of course, the smaller the number is.

In an advantageous embodiment, a distance X of the guide rail 09 from the paper web 01 is also sufficient for the insertion process for the entire folding structure. ie at least from the unfolded paper web 01 promoting hopper folding roller 18 over the path of the former 08 away to the top.

The drawing-in process preferably takes place through the printing units associated with the web path while they are not printing.

LIST OF REFERENCE NUMBERS

01

Material web, paper web

02

Chill roller stand

03

superstructure

04

slitter

05

-

06

turning deck

07

compensation roll

08

formers

09

guide rail

10

-

11

association roller

12

rail section

13

rail section

14

Sensor, photocell

15

adhesive

16

Klebvorbereitungseinrichtung

17

Separator, hopper separator

18

Former inlet roller

19

poor

20

-

21

Section, twisted

22

bolt

23

Groove, longitudinal groove

24

Cross-cutting device

25

-

26

Cylinder, knife cylinder

27

Cylinder, gripper cylinder, folding blade cylinder

28

knife

29

association office

30

Separating device, folding separating device

31

association office

32

rail section

33

rail section

34

give way

35

-

36

capping

37

Section, curved

38

baffle

39

separator

40

-

41

Storage

42

switch

43

Area, telescopically extendable

44

Area. flexible, joint section

45

-

46

Area, pliable, joint section

47

incision

48

Side wall

49

ground

50

-

51

piece of chain

52

Limb, single-segmented

53

Limb, two-segmented

54

End, leading

a

width

a / 2

distance

X

distance

R51

radius of curvature

Claims (36)

1. Device for drawing at least one material web (01) and/or at least one strand comprising several material webs into a folding apparatus having an upper structure (03), at least one fold former (08), a cross-cutting device (24) for the separation of material web (01) transported in the upper structure (03) and folded on the fold former (08) into individual products and at least one guide rail (09), on which a retaining member (51, 19) can be fixed to a leading end (54) of at least one material web (01), is guided moveably through the upper structure (03) on a path of this material web (01), characterized in that several guide rail elements (09; 12; 13; 32; 33) are located, and in that these guide rail elements (09; 12; 13; 32; 33) unite with the guide rail (09) before the cross-cutting device (24) and after at least one fold former (08).
2. Device according to Claim 1, characterized in that the guide rail (09) is twisted at the height of the fold former (08).
3. Device according to Claim 1, characterized in that the fold former (08) is moveable in the cutting direction of the cross-cutting device (24).
4. Device according to Claim 1, characterized in that the guide rail (09) has a section (43) that is extensible in the run direction of the material web (01) ahead of the fold former (08).
5. Device according to Claim 1, characterized in that the guide rail (09) has an articulated section (44; 46) between the entrance of the fold former (08) and the cross-cutting device (24).
6. Device according to Claim 5, characterized in that the articulated section (44; 46) is formed by one or more notches (47) in the guide rail (09).
7. Device according to Claim 1, characterized in that a distance (X) of the guide rail (09) from the paper web (01) is essentially constant from a former inlet roll (18) above the fold former (08) up to its tip.
8. Device according to Claim 6, characterized in that the guide rail (09) has a groove (23) having a bottom (49) and two side walls (48), in which the retaining part (19, 51) is guided, and in that the notches (47) cut through at least one of the side walls (48).
9. Device according to Claim 1, characterized in that the guide rail (09) is located to beyond the cross-cutting device (24).
10. Device according to one of Claims 1 to 9, characterized in that a guillotine (36) for the removal of preceding white waste from the material webs (01) is provided before the cross-cutting device (24).
11. Device according to Claim 10, characterized in that an entrance of the cross-cutting device (24) is located in extension of the passage direction of the material webs (01) through the guillotine (36).
12. Device according to Claim 10 or 11, characterized in that the guide rail (09) has a curved section (37) between the guillotine (36) and the entrance of the cross-cutting device (24) and extends beyond at the entrance of the cross-cutting device (24).
13. Device according to one of the preceding claims, characterized in that in extension of the at least one guide rail (09) a store (41) for the acceptance of retaining parts (19, 51) is located on the other side of the fold former (08).
14. Device according to Claim 13, characterized in that the store (41) is formed by a spiral or helical piece of rail.
15. Device according to Claim 13 or 14, characterized in that the store (41) is upstream of a separating device (17; 30; 39) for separating the retaining parts (19, 51) from their respective material webs (01).
16. Device according to Claims 12 and 15, characterized in that the separating device (39) is located on the guide rail (09) between the curved section (37) and the store (41).
17. Device according to one of the preceding claims, characterized in that the guide rail (09) extends continuously from a roll changer of a printing group upstream of the folding apparatus to the folding apparatus.
18. Device according to one of the preceding claims, characterized in that the device has several paths, on which a web strand is in each case guidable through the upper structure (03) and to the cross-cutting device (24).
19. Device according to Claim 18, characterized in that several pieces of rail (09; 12; 13; 32; 33), which run along each of these paths, merge with the guide rail (09) before the cross-cutting device (24).
20. Device according to Claim 19, characterized in that several pieces of rail (12; 13; 32; 33), which run along each of these paths, merge with the guide rail (09) after at least one fold former (08).
21. Device according to Claim 20, characterized in that points (34) are in each case arranged at the joining sites (29; 31) of the pieces of rail (12; 13; 32; 33).
22. Device according to Claim 1, characterized in that the retaining part (51, 19) comprises a final chain.
23. Device according to Claim 22, characterized in that the chain can be curved diagonally to the transport direction.
24. Device according to Claim 23, characterized in that the chain has rolls with longitudinal axes and that the virtual extension of the longitudinal axes in the curved state intersects at one point, such that the chain has a radius of curvature (R51) of less than 1,000 mm.
25. Device according to Claim 24, characterized in that the radius of curvature (R51) is less than 600 mm.
26. Device according to Claim 1, characterized in that several fold formers (08) are located and a guide rail (09) is led along to each fold former (08).
27. Device according to Claim 26, characterized in that at least two fold formers (08) are located next to each other and in that one guide rail (09) is located along the right side of the one fold former (08) and one guide rail (09) is located along the left side of the other fold former (08).
28. Device according to Claim 27, characterized in that guide rails (09) are arranged only on the two sides pointing away from one another and not on the adjacent sides of the fold former (08).
29. Device according to Claim 17, characterized in that at least two roll changers are located and from each roll changer a guide rail (09) extends into the folding apparatus (08).
30. Device according to Claim 1, characterized in that the guide rail (09) is arranged at a distance from the fold former (08).
31. Method for drawing at least one material web (01) and/or at least one strand comprising at least several material webs into a folding apparatus having an upper structure (03), at least one fold former (08), a cross-cutting device (24) for the separation of material web (01) transported in the upper structure (03) and folded on the fold former (08) into individual products and a guide rail (09), to which a retaining member (51, 19) can be fixed to a leading end (54) of at least one material web (01), is guided displaceably through the upper structure (03) on a path of this material web (01), with the following features:

    - a first material web (01) is guided on the guide rail (09) to a joining point (29; 31), at which one of further rail sections (12; 13; 32; 33) joins with the guide rail (09),

    - a second material web is guided on the rail section (12; 13; 32; 33) to the joining point (29; 31) and fixed to the first material web (01) and

    - the material webs (01) fixed to one another are led further on the guide rail (09) and introduced into the cross-cutting device (24).
32. Method according to Claim 31, in which the second material web is only guided to the joining point (29; 31) when the retaining part (19, 51) of the first material web (01) has passed the joining point (29; 31).
33. Method according to one of Claims 31 to 32, in which the material webs (01) are guided through the cross-cutting device (24) on the guide rail (09).
34. Method according to one of Claims 31 to 33, characterized in that

    - the material webs (01) are guided past to the cross-cutting device (24) by a cap device (36) upstream of the cross-cutting device (24) and initially with the aid of the guide rail (09),

    - if the tips (54) of all material webs (01) have passed the cap device (36), this is actuated to cap the material webs (01), and

    - the leading end (54) resulting on capping enters into the cross-cutting device (24).
35. Method according to Claim 34, in which during the drawing the cross-cutting device (24) is also moved in the correct phase.
36. Method according to one of Claims 31 to 35, in which the retaining parts (19, 51) of all material webs (01) are initially collected in a store (41) attached to the guide rail (09) and after the end of the printing process are transported back in the reverse direction along the guide rail (09) into a respective starting position.

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