EP3061716A1 - Method for the production of newspaper product - Google Patents

Abstract

The present invention is directed to a method for producing a newspaper product (30) from at least a first and a second partial product (31, 32), wherein the first partial product (31) of sheets (4 ') is formed with a length L 1, and the second sub-product (32) is formed from sheets (4 ") of length L 2, the method comprising at least the steps of: (a) printing the individual sheets (4 ', 4") for the first and second sub-products (31 , 32); (b) separating the sheets (4 ', 4 ") and collecting the sheets (4', 4") on at least one stack (24 ') for the first partial product (31) and at least one stack (24 ") for the second Partial product (32), (c) preferably transverse folding of the stack (24 ") with the sheets (4") for the second partial product (32); (d) longitudinal folding of the collected stacks (24 ', 24 ") for the first and second Partial product (31, 32); (e) collecting the individual stacks (24 ', 24 ") into a newspaper product (30), and (f) preferably carrying away the finished newspaper product (30).

Description

The invention relates to a method for producing a newspaper product from at least a first and a second partial product.

From the EP 0 846 573 A1 For example, a folding apparatus and method for producing an omega-shaped fold are known. After an incoming sheet or stack of sheets has been lifted centrally with a sword, the fold is made by two relatively movable jaws. The folded product is ejected after opening the jaws from the rebate area in the direction of the folded edge.

From the EP 1 213 245 A1 are an apparatus and a method for folding sheets, in particular printed sheets of paper, known with a sword having a straight, lying in a Zuförderebene upper edge and is movable perpendicular to the Zuförderebene and with two Anfalzelementen to form a fold. The Anfalzelemente are at least two parallel to the Zuförderebene arranged Anfalzrollen whose axes of rotation each extend parallel to the folded edge. Furthermore, at least two removal rollers are present, whose axes of rotation are perpendicular to the feed plane and which are arranged on the side facing away from the Zuförderebene the Anfalzrollen and / or laterally of the Anfalzrollen. This device and the corresponding method have proven to be very reliable, especially when folding individual sheets. Characterized in that the folding and the removal process carried out at right angles to each other, so that in each case a corresponding deflection of the sheets is required, however, relatively long time is required for folding and conveying away the sheets.

It is a non-inventive object to provide an apparatus and a method in which an increase in the processing speed can be achieved in an efficient manner. The object of the present invention is to specify a method by means of which a newspaper product composed of at least two partial products with a different arc length can be produced in a particularly efficient manner.

The non-inventive object is achieved by a device for folding sheets or sheet stacks, with at least two folding / transport rollers, a transport device and a sword, the transport device defines a transport plane for fed in a transport direction sheets or sheet stack, the sword is substantially perpendicular to and through the transport plane through, wherein the folding / transport rollers are arranged opposite the transport plane on both sides of the sword opposite, wherein the axis of rotation of the folding / transport rollers is substantially perpendicular to the transport plane and wherein the at least two Folding / transport rollers have at their end facing the transport plane each having a rounded portion, so that between the at least two folding / transport rollers a narrowing gap is formed, in which the sheets or sheet stack can be introduced by means of the sword to ge there falzt and at the same time to be conveyed in the direction of transport, and by a method for Folding sheets or sheet stacks by means of at least two folding / transport rollers, a transporting device and a sword, the transporting device defining a transport plane for sheets or sheet stacks fed in a transporting direction, the sword being movable substantially perpendicular to and through the transporting plane wherein the folding / transporting rollers are arranged above the conveying plane opposite to both sides of the sword and the method comprises at least the following steps: (a) feeding a sheet or a sheet stack by means of the transporting device in the transporting direction; (b) moving the sword positioned below the transport plane in contact with the sheet or stack of sheets lying in the transport plane, (c) lifting the sheet or sheet stack by means of the sword and inserting the sheet or sheet stack into one formed between the folding / transport rollers Gap; and (d) folding and simultaneously conveying the sheet or sheet stack in the transporting direction by means of the nip formed between the folding / transporting rollers.

The non-inventive solution is suitable both for folding individual sheets as well as for folding sheet stacks, wherein it is preferably used in connection with the folding of sheet stacks used, since sometimes the folding accuracy need not be quite as high as in individual Sheets. Nevertheless, the achievable folding accuracy is completely sufficient for individual sheets.

The length of the sheet and the width of the sheet are variable over a wide range without having to change over the apparatus.

The feeding speed of the sheets or sheet stack can also be made variable.

In addition variable is the number of sheets in a stack of sheets and the thickness of the individual sheets in a stack of sheets.

Preferably, the number of sheets in a stack is 2 to 25, and more preferably 4 to 12.

Usually, the sheets or sheet stack are folded along, an additional Querfalzung is also possible.

In particular, the folding of the sheets or sheet stacks can be done without significant change in the speed of movement and prevented without a change in the transport direction, which leads to higher processing speeds and shorter clock cycles, as well as a shift of the individual sheets in a stack of sheets.

In a preferred embodiment, the rounded portions of the folding / transport rollers on a spherical disc-shaped configuration. This means that, seen in cross-section, the rounded portions of two opposing folding / transporting rollers converge in the manner of two asymptotes and thus form the narrowing gap between them.

However, a conical configuration of the rounded sections is also conceivable. In particular, the transport plane facing side of the rounded portions of the folding / transport rollers formed flattened (ie, in any case, not completely round) to minimize the penetration depth of the sword in the gap or between the folding / transport rollers and thus to allow a faster movement in the transport direction. If the folding / transport rollers were completely rounded or pointed at their lower end, the penetration depth of the sword would be higher and the cycle time longer.

Preferably, the penetration depth of the sword in the gap formed between the folding / transport rollers is about 3 to 12 mm, particularly preferably 5 to 10 mm. In this way, the clock cycle can be minimized or further optimized.

The sword is preferably formed as thin as possible, so that the folding / transport rollers are moved as far apart as possible during the folding process. Usually, the sword is designed to be thin and pointed, with it being slightly flattened at its upper end (or upper edge). This will prevent the sword from cutting into the paper.

In a further preferred embodiment, the folding / transport rollers are resiliently mounted, preferably transversely to the transport direction. You can therefore passively move against each other. When the sword is moved between the folding / transport rollers with a sheet or stack of sheets, it pushes apart the individual rollers of a pair, and when the sword is moved back, they collapse again. In addition, an active movement of the folding / transport rollers, ie via a drive, conceivable - Be it by exact control of the gap during the folding process, for presetting the gap due to the thickness of the stack to be folded or to improve the folding quality by pressing the folding / transport rollers when conveying away the stack after folding.

In yet another preferred embodiment, the sword is hinged to at least two pulleys (or drive rollers). The articulation is carried out regularly by means of a connecting piece, which is firmly engaged with an underside of the sword and which in each case with the associated pulley (or drive roller) is screwed.

In yet another preferred embodiment, especially during the folding operation, the pulleys (or drive rollers) which generate the stroke of the sword are driven at a constant speed. However, particularly preferred is a control of the rotational speed of the pulleys (or drive rollers) such that a substantially constant horizontal movement of the sword results during the folding operation. As a result, a further process optimization can be achieved and a shift of individual sheets in the stack can be prevented.

In yet another preferred embodiment, the transport device is configured in the form of two conveyor belts running parallel to one another. In this way, a particularly reliable conveyance of the sheets or sheet stack can be ensured.

In yet another preferred embodiment, downstream of the folding / transporting rollers is a Leimkopf arranged. By means of the glue head, a glue trace can be applied to the folded edge of a sheet or sheet pile. This is particularly necessary if multiple folded stacks must be glued together, or if, for example, an envelope should be glued to a folded stack.

Seen in the transport direction after the folding / transport rollers but still before the glue head a pair of pressure rollers is preferably still provided, which serves for (re) pressing the fold. Downstream of the glue head, preferably, a pair of holding rollers are arranged to help prevent descaling of the folded sheet or sheet stack during the sizing operation, thus ensuring that the folded sheet or sheet stack is out of alignment with the apparatus.

In yet another preferred embodiment, a light barrier for detecting the trailing edge of a sheet or a sheet stack is arranged upstream of the folding / transport rollers. Preferably, the detection of the trailing edge of a sheet or stack of sheets triggers a movement or a stroke of the sword. In this way, it is ensured that two sheets or sheet stacks, which enter the device at a small distance, can still be processed precisely. As a result, the gaps between the sheets or sheet stacks can be kept as low as possible, resulting in further process optimization.

In yet another preferred embodiment of the method, the sheets or sheets are stacked before or during feeding according to step (a) or weakened during folding and simultaneous conveying away according to step (d), in particular to avoid an oblique formation of the fold. The weaknesses can be done in different ways. On the one hand, the sheets or sheet piles can be scored along the desired fold line ("scoring"). The bows or sheet piles can also be perforated accordingly. Furthermore, it is conceivable to apply a trace of water droplets along the desired fold line in order to cause a temporary weakening of the paper.

The inventive task consists in the virtually simultaneous production of a newspaper, which consists of one or more frets / sections (or partial products) of the same or different format, with a booklet inserted in the newspaper (as a further partial product), whose individual sheets regularly firmly connected to each other (eg by sizing).

In contrast, in conventional processes, the newspaper and the booklet are each printed separately and the sub-products are brought together in a separate step (the booklet is subsequently inserted in the newspaper).

The object is achieved according to the invention by a method for producing a newspaper product from at least a first and a second partial product, wherein the first partial product is formed from sheets having a length L ₁ and the second partial product is formed from sheets having a length L ₂ , wherein the Method comprises at least the following steps: (a) printing the individual sheets for the first and second partial product, preferably on a paper web and preferably in digital printing; (b) separating the sheets and collecting the sheets on at least one stack for the first partial product and at least one stack for the second partial product; (c) preferably transverse folding of the stack with the sheets for the second partial product; (d) longitudinal folding of the collected stacks for the first and second partial products; (e) collecting the individual stacks into a newspaper product; and (f) preferably carrying away the finished newspaper product, preferably in a flake display.

In this way it is possible that the individual parts or partial products of the newspaper (that is to say including the inserting booklet) can be printed on the same printer and at the same time on the same paper roll and subsequently processed together. The printing is preferably carried out by means of a digital printing machine and can be carried out both in-line and off-line. It is preferable to print on a roll of continuous paper. However, the supply of single sheets is conceivable. In the latter case, it is also conceivable to use different types of paper or grades for the different sub-products.

In a preferred embodiment of the present invention, the printed paper web is temporarily stored after printing according to step (a), in order to be further processed later, if necessary.

When separating the sheets according to step (b), the sheets are preferably cross-cut and immediately afterwards collected. In this case, during the cutting or collecting optional further processing steps can be performed, such as a coating of the sheets (coating), trimming the sheets (longitudinal trimming of the sheets) or gluing the sheets. Collecting bows and crosscuts (Separation) can optionally also be done on the collection device.

For the broadsheet newspaper format, a cross-fold of the collected stack is preferably provided (optional step (c)).

When longitudinally folding the collected stacks according to step (d), optionally the individual sheets of the stacks can be joined together, e.g. using staples or a thread (thread stitching).

In a further preferred embodiment of the method according to the invention for the production of a newspaper product, the sheets or stacks are weakened before or during one of the steps (b), (c) or (d), in particular in order to avoid an oblique formation of the fold. The weaknesses can be done in different ways. On the one hand, the sheets or stacks can be scored along the desired fold line ("scoring"). The sheets or stacks can also be perforated accordingly. Furthermore, it is conceivable to apply a trace of water droplets along the desired fold line in order to cause a temporary weakening of the paper.

In a further preferred embodiment of the present invention, when collecting according to step (e), the individual stacks are joined together. The collecting of the individual stacks preferably takes place on a saddle. The stacks are collected saddle-shaped and possibly glued together.

The optional removal of the finished newspaper products according to step (f) preferably takes place in brick form in a so-called flake display. Before or after the removal is in another optional step trimmed the finished newspaper product, ie cropped at its sides.

In yet another preferred embodiment of the present invention, the length L _{2 of} the sheets for the second partial product is greater, preferably twice as large as the length L _{1 of} the sheets for the first partial product. This is due to the fact that large newspapers (so-called broadsheet format) are folded twice, ie once longitudinally and once across. Small newspapers (so-called tabloid format), however, are folded only once (longitudinally). Both formats can be mixed produced with the inventive method and collected to form a common end product.

The accompanying drawings are for the purpose of illustration and are merely exemplary of preferred embodiments of the present invention.

Fig. 1a

eine schematische perspektivische Ansicht der Vorrichtung zum Falzen von Bögen oder von Bogenstapeln;

Fig. 1b

eine schematische Seitenansicht der Vorrichtung zum Falzen von Bögen oder von Bogenstapeln;

Fig. 1c

eine schematische Frontalansicht der Vorrichtung zum Falzen von Bögen oder von Bogenstapeln;

Fig. 2a

eine schematische perspektivische Ansicht eines Ausschnitts der Vorrichtung zum Falzen von Bögen oder von Bogenstapeln in einer ersten Position;

Fig. 2b

eine schematische Seitenansicht eines Ausschnitts der Vorrichtung zum Falzen von Bögen oder von Bogenstapeln in einer ersten Position;

Fig. 2c

eine schematische Frontalansicht eines Ausschnitts der Vorrichtung zum Falzen von Bögen oder von Bogenstapeln in einer ersten Position;

Fig. 3a

eine schematische perspektivische Ansicht eines Ausschnitts der Vorrichtung zum Falzen von Bögen oder von Bogenstapeln in einer zweiten Position;

Fig. 3b

eine schematische Seitenansicht eines Ausschnitts der Vorrichtung zum Falzen von Bögen oder von Bogenstapeln in einer zweiten Position;

Fig. 3c

eine schematische Frontalansicht eines Ausschnitts der Vorrichtung zum Falzen von Bögen oder von Bogenstapeln in einer zweiten Position;

Fig. 4a

eine schematische perspektivische Ansicht eines Ausschnitts der Vorrichtung zum Falzen von Bögen oder von Bogenstapeln in einer dritten Position;

Fig. 4b

eine schematische Seitenansicht eines Ausschnitts der Vorrichtung zum Falzen von Bögen oder von Bogenstapeln in einer dritten Position;

Fig. 4c

eine schematische Frontalansicht eines Ausschnitts der Vorrichtung zum Falzen von Bögen oder von Bogenstapeln in einer dritten Position;

Fig. 5a

eine schematische perspektivische Ansicht eines Ausschnitts der Vorrichtung zum Falzen von Bögen oder von Bogenstapeln in einer vierten Position;

Fig. 5b

eine schematische Seitenansicht eines Ausschnitts der Vorrichtung zum Falzen von Bögen oder von Bogenstapeln in einer vierten Position;

Fig. 5c

eine schematische Frontalansicht eines Ausschnitts der Vorrichtung zum Falzen von Bögen oder von Bogenstapeln in einer vierten Position;

Fig. 6a

eine schematische perspektivische Ansicht eines Ausschnitts der Vorrichtung zum Falzen von Bögen oder von Bogenstapeln in einer fünften Position;

Fig. 6b

eine schematische Seitenansicht eines Ausschnitts der Vorrichtung zum Falzen von Bögen oder von Bogenstapeln in einer fünften Position;

Fig. 6c

eine schematische Frontalansicht eines Ausschnitts der Vorrichtung zum Falzen von Bögen oder von Bogenstapeln in einer fünften Position;

Fig. 7

eine schematische perspektivische Ansicht einer Verarbeitungslinie für das erfindungsgemässe Verfahren zur Herstellung eines Zeitungsprodukts;

Fig. 8a

eine beispielhafte Papierbahn für das erfindungsgemässe Verfahren in einer Verarbeitungslinie gemäss Fig. 7;

Fig. 8b

eine beispielhafte Papierrolle für das erfindungsgemässe Verfahren in einer Verarbeitungslinie gemäss Fig. 7;

Fig. 9

einen vereinzelten Bogen für ein erstes Teilprodukt sowie einen vereinzelten Bogen für ein zweites Teilprodukt;

Fig. 10

einen Stapel für ein erstes Teilprodukt sowie einen Stapel für ein zweites Teilprodukt;

Fig. 11

einen quergefalzten Stapel für ein zweites Teilprodukt;

Fig. 12a

Ansichten eines ersten Teilprodukts aus verschiedenen Perspektiven;

Fig. 12b

Ansichten eines zweiten Teilprodukts aus verschiedenen Perspektiven;

Fig. 13

Ansichten eines fertigen Zeitungsprodukts aus verschiedenen Perspektiven;

Fig. 14

mehrere fertige Zeitungsprodukte beim Wegfördern in Schuppenauslage.

It shows:

Fig. 1a

a schematic perspective view of the device for folding sheets or sheet stacks;

Fig. 1b

a schematic side view of the device for folding sheets or sheet stacks;

Fig. 1c

a schematic front view of the device for folding sheets or sheet stacks;

Fig. 2a

a schematic perspective view of a section of the device for folding sheets or sheet stacks in a first position;

Fig. 2b

a schematic side view of a section of the device for folding sheets or sheet stacks in a first position;

Fig. 2c

a schematic frontal view of a section of the device for folding sheets or sheet stacks in a first position;

Fig. 3a

a schematic perspective view of a section of the device for folding sheets or sheet stacks in a second position;

Fig. 3b

a schematic side view of a section of the device for folding sheets or sheet stacks in a second position;

Fig. 3c

a schematic frontal view of a section of the device for folding sheets or sheet stacks in a second position;

Fig. 4a

a schematic perspective view of a section of the device for folding sheets or sheet stacks in a third position;

Fig. 4b

a schematic side view of a section of the device for folding sheets or sheet stacks in a third position;

Fig. 4c

a schematic frontal view of a section of the device for folding sheets or sheet stacks in a third position;

Fig. 5a

a schematic perspective view of a section of the device for folding sheets or sheet stacks in a fourth position;

Fig. 5b

a schematic side view of a section of the device for folding sheets or sheet stacks in a fourth position;

Fig. 5c

a schematic frontal view of a section of the device for folding sheets or sheet stacks in a fourth position;

Fig. 6a

a schematic perspective view of a section of the device for folding sheets or sheet stacks in a fifth position;

Fig. 6b

a schematic side view of a section of the device for folding sheets or sheet stacks in a fifth position;

Fig. 6c

a schematic front view of a section of the device for folding sheets or sheet stacks in a fifth position;

Fig. 7

a schematic perspective view of a processing line for the inventive method for producing a newspaper product;

Fig. 8a

an exemplary paper web for the inventive method in a processing line according to Fig. 7 ;

Fig. 8b

an exemplary roll of paper for the inventive method in a processing line according to Fig. 7 ;

Fig. 9

a single sheet for a first partial product and a single sheet for a second partial product;

Fig. 10

a stack for a first partial product and a stack for a second partial product;

Fig. 11

a Quergefalzten stack for a second partial product;

Fig. 12a

Views of a first sub-product from different perspectives;

Fig. 12b

Views of a second sub-product from different perspectives;

Fig. 13

Views of a finished newspaper product from different perspectives;

Fig. 14

several finished newspaper products when conveying away in scale delivery.

The Fig. 1a shows a schematic, perspective view of the device for folding sheets or sheet stacks, but here even without a sheet or stack of sheets.

The feed rollers for the sheets or sheet stacks are designated by the reference numeral 8. Above the feed rollers 8 a weakening device 11 is provided for the incoming sheets or sheet stack, which serves to weaken the paper before folding and thus make it easier to fold. This can on the one hand be a device for scoring along the desired fold line ("scoring") or else a perforating device. In addition, there is still the possibility that a trace of water droplets is sprayed onto the paper by means of the weakening device 11 in order to bring about a temporary weakening of the paper. However, it is also possible that the weakening of the paper is suitably carried out during the folding operation. The weakening can very effectively avoid creating a skewed seam, resulting in a significant increase in the quality of the finished product.

Downstream of the attenuator 11, but still in the area of the feed rollers 8, a light barrier 7 is provided. The light barrier 7 serves to detect the trailing edge of an arc or a sheet pile and triggers a movement of the sword 2 (in this regard, the light barrier 7 of course with a corresponding controller, which is not shown here for reasons of simplicity).

The sword 2 is connected via the connecting pieces 9 respectively with the drive rollers 5 (usually pulleys) or hinged thereto. The drive rollers 5 are driven in the direction shown by the respective arrows (i.e., counterclockwise in the present case).

The sword 2 is arranged between two conveyor belts 3a and 3b of a transport device 3, so that it can engage substantially centrally with the supplied sheets. Above the transport device 3, a plurality of pairs of opposing folding / transport rollers 1 are arranged, which serve for folding and simultaneously conveying the sheets or sheet stack. In a preferred embodiment, the conveyor belts 3 a, 3 b may extend upstream of the folding / transport rollers 1 and thus possibly take over the function of the feed rollers 8 completely or at least partially.

Downstream of the folding / transport rollers 1, a pair of pressure rollers 19 is provided, which serves for the repeated Zusammen- or pressing of the previously formed fold and thus contributes to increasing the quality of the fold. Downstream of the pressure rollers 19, a glue head 6 is arranged, by means of which a glue trace can be applied to the fold edge of the respective sheet or sheet pile.

Downstream of the glue head 6, a pair of retaining rollers 10 is finally provided. The holding rollers 10 serve to a descent of the folded sheet or To prevent sheet pile during glueing. In this way it is ensured that the folded sheet or sheet stack comes straight out of the device.

In the Fig. 1b the same reference numerals denote the same components, which also applies to the further description of the figures. In this side view, one can see in particular the transport plane E for the sheets or sheet piles to be processed. The transport plane E is essentially defined by the surface of the conveyor belts 3a, 3b of the transport device 3 and possibly also by the imaginary top side of the feed rollers 8. The axis of rotation A of the folding / transport rollers 1 runs perpendicular to the transport plane E. The axis of rotation A is shown here only as an example of one of the folding / transport rollers, in the other folding / transport rollers 1 but it runs in the same way. Further, again by way of example, the transporting direction R of the leftmost folding / transporting roller 1 is shown divided into its rounded portion 1a and the cylindrical portion 1b (this embodiment will be explained later in detail). It can also be seen well that the glue application from the glue head 6 after passing through the pressure rollers 19, before entering the holding rollers 10, takes place.

In the frontal view according to Fig. 1c Recognizes that the hinged on the connecting rollers 9 to the drive rollers 5 sword 2 is located exactly midway between the conveyor belts 3a and 3b and that the respective pairs of rollers, ie the support rollers 10, the pressure rollers 19 and the folding / transport rollers 1 are arranged opposite each other on both sides of the sword 2. The Leimkopfauslass 6a is arranged so that the glue can reach exactly the fold formed by the sword of the sheets or sheet stack. Below the conveyor belts 3a and 3b can be seen still the lower half of the feed rollers. 8

The Fig. 2a shows a schematic perspective view of a section of the device for folding sheets or sheet stacks in a first position in which a sheet or sheet stack 4 by means of the feed rollers 8 of the transport device 3 and the two conveyor belts 3a, 3b is fed. The trailing edge 14 of the sheet or sheet stack 4 does not yet have the in Fig. 1a shown photocell 7 happens; the leading edge 13 is just about the conveyor belts 3a, 3b on. The sword 2 is thus in its starting position. The folding / transport rollers 1 are therefore not yet in engagement with the sheet or sheet stack 4. The hinged to the drive rollers 5 connectors 9 are in their right, middle position.

In Fig. 2b is again the geometric relationship between the transport direction R, the transport plane E and the axis of rotation A of the folding / transport rollers 1 illustrated: the axis of rotation A is substantially perpendicular to the transport plane E and the transport direction R.

In Fig. 2c it can be seen that the upper edge or upper side of the sword 2 is arranged just below the underside of the incoming sheet or sheet stack 4. As a result, on the one hand, the supply of the incoming sheet or sheet stack 4 is not blocked, On the other hand, the sword 2, in response to a corresponding signal from the light barrier 7 and the associated control, directly engage with the sheet or sheet stack 4.

Between the folding / transport rollers 1 with their rounded portions 1a and their cylindrical portions 1b, a gap S is formed, which, seen from the bottom upwards, increasingly narrows. The inner sides of the two folding / transport rollers shown in cross-section accordingly form an asymptotic arrangement. The rounded portions 1a of the folding / transport rollers are formed spherical disc-shaped, so that they have on their underside a flattening 1c. The flattening 1c serves to ensure that the sword 2 does not have to penetrate too deeply between the folding / transport rollers 1 during operation. The direction of rotation of the axis of rotation A of the two folding / transport rollers 1 shown is in opposite directions, as indicated by the two arrows.

The Fig. 3a shows a schematic, perspective view of a section of the device for folding sheets or sheet stacks in a second position in which the sheet or sheet stack 4 already completely on the conveyor belts 3a, 3b of the transport device 3 rests (see also Fig. 3b ). The trailing edge 14 of the sheet or sheet stack 4 has thus passed the light barrier, so that the triggering of a movement of the sword 2 is imminent, but not yet done. The sword 2 is almost directly on the underside of the sheet or sheet stack 4 (see. Fig. 3c ) and is ready to move it out of transport plane E.

In the Fig. 4a to 4c now schematic sectional views of a device for folding sheets or sheet stacks in a third position is illustrated, in which the movement of the sword 2 has already taken place. The drive rollers 5 and the hinged to them connectors 9 were moved in the direction indicated by the arrows around a circular arc of 90 ° in the uppermost position, so that the sword 2 the sheet or sheet stack 4 in the gap S between the folding / Transported roles 1 or has introduced. The folding / transport rollers 1 are preferably spring-mounted, as by means of the double arrows in Fig. 4c indicated so that they can move apart horizontally when the sword 2 with the sheet or sheet stack 4 in the gap S or can move together again when the sword 2 and / or the sheet or sheet stack 4 is no longer in the Gap S are located.

The penetration depth of the sword 2 in the gap S is designated by X (see. Fig. 4c ), and is usually measured from the bottom or the flattening 1c of the folding / transport rollers 1 to the top or top edge of the sword 2. The sword 2 has here reached its highest position between the folding / transport rollers 1, wherein the top of the sword 2 protrudes into the region between the cylindrical portions 1 b of the folding / transporting rollers 1, ie beyond the rounded portions 1 a.

The Fig. 5a to 5c show schematic sectional views of the device for folding sheets or sheet stacks in a fourth position in which the sword 2 is no longer in engagement with the sheet or Sheet stack 4 is. The drive rollers 5 and the connecting pieces 9 articulated thereon have moved in the direction of the arrow by a further arc α of 90 ° and are now in their left middle position. The sword 2 is thus again reached directly below the transport plane E. The sheet or sheet stack 4 was from the folding / transport rollers 1 relative to the third position according to the Fig. 4a to 4c moved a bit further in the transport direction R and folded at the same time, the fold 12 of the sheet or sheet stack 4 parallel to the transport plane E runs.

The Fig. 6a to 6c Finally, show schematic sectional views of the device for folding sheets or sheet stacks in a fifth position in which the sheet or sheet stack 4 was further promoted in the transport direction R and thereby folded so that it now in accordance with the Fig. 1a to 1c in engagement with the pressure rollers 19 and optionally the glue head 6 and the support rollers 10 would be. The fold 12 continues to run parallel to the transport plane E. Another sheet or stack of sheets 4 is already transported by the feed rollers 8 in the direction of the conveyor belts 3a and 3b.

The drive rollers or pulleys 5 have moved further through another arc α of 90 ° in the drive direction (see arrows), so that the hinged connector 9 is in its lowermost position. The sword 2 has reached here accordingly also its lowest position. In Fig. 6c it can be seen that the lower edge of the connecting piece 9 is practically flush with the underside of the drive roller or pulley. 5

From this position, the sword 2 then passes again through a further movement along a circular arc α of 90 ° in its initial position according to the FIGS. 2a to 2c back, in which the next sheet or sheet stack 4 has arrived with its leading edge 13 on the conveyor 3 and the previous sheet or sheet stack 4 has left the folding / transport rollers 1 anyway.

Due to the illustrated interaction of the individual components of the device, the sheets or sheet stack 4 are always transported in the same transport direction R, whereby high processing speeds and short clock cycles can be achieved.

Fig. 7 shows a schematic perspective view of a processing line for the inventive method for producing a newspaper product from at least a first and a second partial product. The processing line 40 is composed of the following components (seen in the transport direction from right to left):

At the beginning of the processing line 40 is an unwinder 41 for the (endless) paper roll 23. From here, the unwound paper web is forwarded to the printer 42, which is regularly designed as a digital printing press. Here, the paper web is printed with corresponding sheets of different sizes. Following the printer 42, a vacuum box 43 can be arranged, which serves as a buffer for speed compensation.

Downstream of the vacuum box 43, a cross cutter 44 is arranged, which is for the separation of the sheets provides. The cross cutter 44 is followed by a collector 45 (usually a drum collector), on which the stack formation takes place from the corresponding bows. On the collector 45, a gluing of the sheets forming the stacks can also already take place.

From the collector 45, the stacks are then forwarded to a folding module 46, which is subdivided into a feed 46a, a transverse folding device 46b (optional) and a longitudinal folding device with optionally a Aufsattler (in a module). The feeder 46a should be designed to be sufficiently long (usually several arc lengths) in order to be able to brake the incoming stacks somewhat, if necessary. The folding module 46 is adjoined by a removal conveyor 47 for transporting the finished newspaper products 30.

In Fig. 8 A paper web 22 is now shown schematically on which sheets 4 ', 4 "have already been printed with different formats The two sheets 4' each have a length L ₁ and the sheet 4" has a length L ₂ , wherein the length L _{2 is} about twice as large as the length L _{1 of} the sheets 4 '. The width B of the paper web 22 is the same in each case.

The paper web 22 is regularly unwound from an (endless) paper roll 23, as in Fig. 8b will be shown. Again, one recognizes the two sheets 4 'as well as the approximately twice as long sheet 4 ", but there is also the possibility that the sheets 4' and 4" are fed individually.

In Fig. 9 In each case, an isolated sheet 4 'and an isolated sheet 4 "are shown, the separation being carried out, as already explained above, usually in the cross cutter 44.

Fig. 10 1 illustrates a stack 24 'of sheets 4' and a stack 24 "of sheets 4". The stack 24 'here comprises five sheets 4' and has a fold line 25 shown in dashed lines in the middle. In the present case, the stack 24 'comprises three sheets 4 "and has a fold line 26 and a fold line 27. The collection of the individual stacks 24' and 24" takes place on the collector 45 according to FIG Fig. 7 ,

Based on Fig. 11 A folded pile 24 'of three sheets 4 "is then illustrated, folded over the transverse fold line 26. During folding, the folded edge 26a was formed and the still unfolded fold line 27 can be seen. In the method according to the invention, this step represents an optional intermediate step.

In Fig. 12a Now, views of a first partial product 31 of a newspaper product are shown from three different perspectives. The first partial product 31 is formed by the longitudinal folding of a stack 24 'of five sheets 4' along the longitudinal fold line 25. In this case, the folded edge 25a is formed.

The Fig. 12b shows corresponding views of a second partial product 32. The second partial product 32 is formed by folding the in Fig. 11 In this case, the folded edge 27a is formed which divides the folded edge 26a in the middle Fig. 7 executed.

Fig. 13 schematically illustrates the saddle-shaped collected to a finished newspaper product 30 partial products 32 and 31. In the present example, a partial product 31 (ie, formed from sheets 4 ') in four

Of course, the finished newspaper product 30 can also take on any other desired form, although at least the outermost sub-product is regularly a second sub-product 32. Incidentally, the folded sub-products 31, 32 can also be collected be glued together.

Which of the optional method steps take place when, if appropriate, is preferably effected by means of a (in Fig. 7 for reasons of simplicity not shown) control set: cross fold yes / no, glue application when stacking the still unfolded sheets yes / no, glue application when collecting the folded part products yes / no, weaknesses of the fold lines yes / no, etc.).

The Fig. 14 finally shows five finished newspaper products 30 when conveying away in the preferred scale display, in which the individual newspaper products 30 are roof tiles on each other. However, the finished newspaper products 30 can also be conveyed away individually or as a stack. The conveying away takes place by means of the removal conveyor 47, as in Fig. 7 shown schematically.

1. (1) Vorrichtung zum Falzen von Bögen oder von Bogenstapeln (4), mit zumindest zwei Falz-/Transportrollen (1), einer Transporteinrichtung (3) sowie einem Schwert (2), wobei die Transporteinrichtung (3) eine Transportebene E für in einer Transportrichtung R zugeführte Bögen oder Bogenstapel (4) definiert, wobei das Schwert (2) im Wesentlichen senkrecht zur und durch die Transportebene E hindurch bewegbar ist, wobei die Falz-/Transportrollen (1) oberhalb der Transportebene E zu beiden Seiten des Schwerts (2) gegenüberliegend angeordnet sind, wobei die Drehachse A der Falz-/Transportrollen (1) im Wesentlichen senkrecht zu der Transportebene E verläuft und wobei die zumindest zwei Falz-/Transportrollen (1) an ihrem der Transportebene E zugewandten Ende jeweils einen abgerundeten Abschnitt (1a) aufweisen, so dass zwischen den zumindest zwei Falz-/Transportrollen (1) ein sich verengender Spalt S ausgebildet ist, in welchen die Bögen oder Bogenstapel (4) mittels dem Schwert (2) einbringbar sind, um dort gefalzt und gleichzeitig in Transportrichtung R wegefördert zu werden.
2. (2) Vorrichtung nach Ausgestaltung (1), wobei die abgerundeten Abschnitte (1a) der Falz-/Transportrollen (1) eine kugelscheibenförmige Ausgestaltung aufweisen.
3. (3) Vorrichtung nach einer der vorhergehenden Ausgestaltungen, wobei die Falz-/Transportrollen (1) federnd gelagert sind und zwar vorzugsweise quer zur Transportrichtung R.
4. (4) Vorrichtung nach einer der vorhergehenden Ausgestaltungen, wobei das Schwert (2) an zumindest zwei Antriebsrollen (5) angelenkt ist.
5. (5) Vorrichtung nach Ausgestaltung (4), wobei die Antriebsrollen (5), insbesondere während des Falzvorgangs, mit konstanter Drehzahl angetrieben werden.
6. (6) Vorrichtung nach einer der vorhergehenden Ausgestaltungen, wobei die Eindringtiefe X des Schwerts (2) in den zwischen den Falz-/Transportrollen (1) ausgebildeten Spalt S etwa 5 bis 10 mm beträgt.
7. (7) Vorrichtung nach einer der vorhergehenden Ausgestaltungen, wobei die Transporteinrichtung (3) in Form von zwei parallel zueinander verlaufenden Förderbändern (3a, 3b) ausgestaltet ist.
8. (8) Vorrichtung nach einem der vorhergehenden Ausgestaltungen, wobei stromabwärts von den Falz-/Transportrollen (1) ein Leimkopf (6) angeordnet ist.
9. (9) Vorrichtung nach einem der vorhergehenden Ausgestaltungen, wobei stromaufwärts von den Falz-/Transportrollen (1) eine Lichtschranke (7) zur Detektion der Hinterkante (14) eines Bogens oder eines Bogenstapels (4) angeordnet ist.
10. (10) Vorrichtung nach Ausgestaltung (9), wobei die Detektion der Hinterkante (14) eines Bogens oder eines Bogenstapels (4) eine Bewegung des Schwerts (2) auslöst.
11. (11) Verfahren zum Falzen von Bögen oder von Bogenstapeln (4), mittels von zumindest zwei Falz-/Transportrollen (1), einer Transporteinrichtung (3) sowie einem Schwert (2), wobei die Transporteinrichtung (3) eine Transportebene E für in einer Transportrichtung R zugeführte Bögen oder Bogenstapel (4) definiert, wobei das Schwert (2) im Wesentlichen senkrecht zur und durch die Transportebene E hindurch bewegbar ist, wobei die Falz-/Transportrollen (1) oberhalb der Transportebene E zu beiden Seiten des Schwerts (2) gegenüberliegend angeordnet sind und wobei das Verfahren zumindest die folgenden Schritte umfasst:
    1. (a) Zuführen eines Bogens oder eines Bogenstapels (4) mittels der Transporteinrichtung (3) in Transportrichtung R;
    2. (b) Bewegen des unterhalb der Transportebene E positionierten Schwerts (2) in Kontakt mit dem in der Transportebene liegenden Bogen oder Bogenstapel (4);
    3. (c) Anheben des Bogens oder des Bogenstapels (4) mittels des Schwerts (2) und Einbringen des Bogens oder des Bogenstapels (4) in einen zwischen den Falz-/Transportrollen (1) ausgebildeten Spalt S; und
    4. (d) Falzen und gleichzeitiges Wegfördern des Bogens oder des Bogenstapels (4) in Transportrichtung R vermittels des zwischen den Falz-/Transportrollen (1) ausgebildeten Spalts S.
12. (12) Verfahren nach Ausgestaltung (11), wobei die Hinterkante (14) des gemäss Schritt A zugeführten Bogens oder Bogenstapels (4) von einer Lichtschranke (7) detektiert wird, woraufhin die Bewegung des Schwerts (2) gemäss den Schritten (c) und (d) ausgelöst wird.
13. (13) Verfahren nach Ausgestaltung (11) oder (12), wobei gemäss Schritt (d) das Schwert (2) etwa 5 bis 10 mm tief in den Spalt S eindringt.
14. (14) Verfahren nach einer der Ausgestaltungen (11) bis (13), wobei die Bögen oder Bogenstapel (4) vor oder während des Falzens gemäss Schritt (d) geschwächt werden.

In a further embodiment, the following also includes:

1. (1) Device for folding sheets or sheet stacks (4), with at least two folding / transport rollers (1), a transport device (3) and a sword (2), wherein the transport device (3) a transport plane E for in a Transport direction R supplied sheets or sheet stack (4) defined, wherein the sword (2) is substantially perpendicular to and through the transport plane E therethrough, wherein the Folding / transport rollers (1) above the transport plane E on both sides of the sword (2) are arranged opposite one another, wherein the axis of rotation A of the folding / transport rollers (1) is substantially perpendicular to the transport plane E and wherein the at least two fold / Transport rollers (1) at their end facing the transport plane E each having a rounded portion (1 a), so that between the at least two folding / transport rollers (1) a narrowing gap S is formed, in which the sheets or sheet stack (4 ) by means of the sword (2) can be introduced to be folded there and simultaneously promoted in the transport direction R.
2. (2) Device according to embodiment (1), wherein the rounded portions (1a) of the folding / transport rollers (1) have a spherical disk-shaped configuration.
3. (3) Device according to one of the preceding embodiments, wherein the folding / transport rollers (1) are resiliently mounted, preferably transversely to the transport direction R.
4. (4) Device according to one of the preceding embodiments, wherein the sword (2) is articulated on at least two drive rollers (5).
5. (5) Device according to embodiment (4), wherein the drive rollers (5), in particular during the folding operation, are driven at a constant speed.
6. (6) Device according to one of the preceding embodiments, wherein the penetration depth X of the Sword (2) in the between the folding / transport rollers (1) formed gap S is about 5 to 10 mm.
7. (7) Device according to one of the preceding embodiments, wherein the transport device (3) in the form of two mutually parallel conveyor belts (3a, 3b) is configured.
8. (8) Device according to one of the preceding embodiments, wherein downstream of the folding / transport rollers (1) a glue head (6) is arranged.
9. (9) Device according to one of the preceding embodiments, wherein upstream of the folding / transport rollers (1) a light barrier (7) for detecting the trailing edge (14) of a sheet or a sheet pile (4) is arranged.
10. (10) Device according to embodiment (9), wherein the detection of the trailing edge (14) of a sheet or a sheet pile (4) triggers a movement of the sword (2).
11. (11) A method for folding sheets or sheet stacks (4), by means of at least two folding / transport rollers (1), a transport device (3) and a sword (2), wherein the transport device (3) has a transport plane E for in Defines a sheet or sheet stack (4) supplied to a transport direction R, wherein the sword (2) is substantially perpendicular to and through the transport plane E, wherein the folding / transport rollers (1) above the transport plane E on both sides of the sword ( 2) are arranged opposite one another and wherein the method comprises at least the following steps:
    1. (A) feeding a sheet or a sheet stack (4) by means of the transport device (3) in the transport direction R;
    2. (b) moving the sword (2) positioned below the transport plane E in contact with the sheet or sheet stack (4) lying in the transport plane;
    3. (c) lifting the sheet or stack of sheets (4) by means of the sword (2) and inserting the sheet or sheet pile (4) into a nip S formed between the folding / transport rolls (1); and
    4. (D) folding and simultaneously conveying away the sheet or the sheet stack (4) in the transport direction R by means of the formed between the folding / transport rollers (1) gap S.
12. (12) Method according to embodiment (11), wherein the trailing edge (14) of the sheet or sheet stack (4) supplied according to step A is detected by a light barrier (7), whereupon the movement of the sword (2) according to steps (c) and (d) is triggered.
13. (13) Method according to embodiment (11) or (12), wherein according to step (d) the sword (2) penetrates approximately 5 to 10 mm deep into the gap S.
14. (14) The method according to any one of the embodiments (11) to (13), wherein the sheets or sheet stacks (4) are weakened before or during the hemming according to the step (d).

LIST OF REFERENCE NUMBERS

1

Folding / transport rollers

1a

rounded section

1b

cylindrical section

1c

flattening

2

sword

3

transport means

3a

conveyor belt

3b

conveyor belt

4

Sheets / sheet pile

4 '

Sheets

4 ''

Sheets

5

Pulleys / drive rollers

6

gluing head

6a

Leimkopfauslass

7

photocell

8th

feed rollers

9

joint

10

holding rollers

11

weakening device

12

fold

13

leading edge

14

trailing edge

19

Pinch Rollers

22

paper web

23

Paper roll (printed)

24 '

stack

24 "

stack

25

fold line

25a

folding edge

26

fold line

26a

folding edge

27

fold line

27a

folding edge

30

newspaper product

31

first partial product

32

second partial product

40

processing line

41

liquidator

42

printer

43

Vacuumbox

44

Sheeter

45

collector

46

folding module

46a

feed

46b

cross-folding

46c

A longitudinal folder

47

removal conveyor

A

axis of rotation

e

transport plane

L ₁

length

L ₂

length

R

transport direction

S

gap

X

penetration depth

α

arc

Claims (5)

A process for producing a newspaper product (30) from at least a first and a second partial product (31, 32), wherein the first partial product (31) is formed from sheets (4 ') having a length L ₁ and the second partial product (32) Arches (4 ") is formed with a length L ₂ , wherein the method comprises at least the following steps: (a) printing the individual sheets (4 ', 4 ") for the first and second partial product (31, 32), preferably on a paper web (25) and preferably in digital printing; (B) singulating the sheets (4 ', 4'') and collecting the sheets (4', 4 ") on at least one stack (24 ') for the first part product (31) and at least one stack (24") for the second partial product (32); (c) preferably, transverse folding of the stack (24 ") with the sheets (4") for the second partial product (32); (d) longitudinal folds of the collected stacks (24 ', 24 ") for the first and second partial products (31, 32); (e) collecting the individual stacks (24 ', 24 ") into a newspaper product (30); (F) preferably carrying away the finished newspaper product (30), preferably in a flake display. A method according to claim 1, characterized in that the length L _{2 of} the sheets (4 '') for the second partial product (32) is greater, preferably twice as large, as the length L _{1 of} the sheets (4 ') for the first partial product (31). A method according to claim 1 or 2, characterized in that after printing according to step A, the printed paper web (22) is temporarily stored. Method according to one of claims 1 to 3, characterized in that during collection according to step E, the individual stacks (24 ', 24'') are interconnected. Method according to one of claims 1 to 4, characterized in that the sheets (4 ', 4'') or stacks (24', 24 ") are weakened before or during the folding according to step (c) and / or (d) ,

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