DE3628411A1 - FOLDING APPARATUS - Google Patents

Description

The invention relates to a folder, in particular a variable folder, with upstream, preferred first longitudinal fold designed as a former device and with at least one transverse folding device with a collection with folding knives and grippers cylinder, which a cross cutting device with preference show the acceleration path following this are ordered and with at least one with the fold knife-assigned jaws occupied folding cylinders interacts, the at least one delivery device, preferably a cross fold delivery device, and a second longitudinal folding device with assigned longitudinal fold delivery device is or are subordinate.  

The known arrangements of this type are usually only set up for a specific production. Experience has shown that this is often too unimportant desired restrictions. Because it is multiple desirable, for example not only products with and without cross fold and if necessary with and without a second longitudinal fold to be able to interpret, but also about half circumference or quarter circumference in relation to the plate or Form cylinder of the upstream printing press cut to be able to process ne products. This is with the be known arrangements not possible. These prove therefore as not versatile enough.

Based on this, it is therefore the task of the present Invention, the versatility of a folder to increase the type mentioned at the beginning.

This object is achieved in that the two multi-armed, mutually adjustable Armatu racks containing carrier two sets of Grei far from which the grippers of one set each next to a folding knife on which it is assigned neten dashboard included and alternative to the Folding knives can be activated and the grippers of the other Set together with the grippers of the first set or can be activated with the folding knives on an egg Gen dashboards are included that everyone if two multi-armed, mutually adjustable arm Folding cylinders containing door supports also contain two sets from alternatively to each other and / or alternatively to the Folders can be activated, with the simultaneously activated grippers of the collecting cylinder interacting grippers  has, of which the grippers of one set each next to a folding flap on the arm assigned to it door carrier and the grippers of the other set in one own dashboard are included, and that the Cross cutting device from one section length to one other, half as large section length is convertible and vice versa.

These measures advantageously result in a com binationsfalz- or -abtschabtapparat for optional Ver work of z. B. ge on half or quarter of the circumference cut products, optionally with and without longitudinal fold and / or with and without cross fold and / or with and without Collecting can be worked. With cross foldless, however longitudinally folded production the fiber course is correct advantageously coincides with the longitudinal fold profile, which is often desired. Instead of the first longitudinal fold a longitudinal section can also be provided. This is only in the area of the first longitudinal folding device corresponding, optionally activatable slitter provision. In the case of a second longitudinal folder tion can also be worked with and without a second longitudinal fold will. It is therefore also possible in an advantageous manner to produce so-called two-up products in which the The course of the fibers matches the course of both folds. The measures according to the invention thus make it possible high versatility. In the case of a cross fold production are the folding knives and folding jaws as well as the gripper held on its own dashboard of the collecting cylinder activated. The other grabs are passivated. If cut to half circumference Folded products should be designed without cross folds Knives and flaps passivated. In addition to everyone  second grippers of the collecting cylinder are each two te gripper of the folding cylinder or the folding cylinder acti fourth. If the processing is shorter, to a quarter Scope of cut products the cross folding device passivated, both gripper groups of the collecting zy Linders and the folding cylinder or the folding cylinder ak tiviert, the products to the intermeshing Grippers of the successive cylinders are handed over the. Those with folding knives and grippers or folding flaps and grippers-occupied dashboards become one fold so adjusted that the mutual grippers with each other combing others, d. H. take the position that in the case a cross fold production the folding knives and folding flaps to have. Because on the folding knives or folding jaws associated dashboards each a complete Grei Fatz sits, is advantageously a very simple setting by means of a variable fold apparatus already available fold adjustment. For this you can simply use folding knives and grippers or jaws and grippers occupy the dashboard just be in mesh with each other so that one common adjustment is possible in a simple manner. The measures according to the invention thus result Despite the high versatility, it is also a simple one Construction and usability.

Advantageously, in the case of a second longitudinal folding device the cross fold delivery device of the second Longitudinal folding device to be arranged downstream. For this, a fold that from the cross fold device to the cross fold delivery the second longitudinal fold enforce direction. This makes it possible to use a  and the same tape guide the second longitudinal folding device to operate or the products without a second longitudinal fold to design the cross fold delivery device. This applies in advantageously also in the case of a so-called Envelope production, d. H. also cross foldless and possibly Products that are cut completely without longitudinal folds become one fold over the cross fold delivery device.

Another useful training for the parent Measures can be that the cross cutting direction one with two offset by 180 ° against each other, Knife pick-up points that can be occupied with knives provided knife cylinder and one preferably with two grooves provided offset from each other by 180 ° cylinder. This measure enables a quick le convertibility from cut to half circumference to cut to a quarter of an inch by simply using a knife receiving point or both knife receiving points of the measurement cylinder with a knife. In addition it is easy to do the second Knife to be replaced by a cross perforating knife so that a cross perforation cut to half the circumference products results in what a subsequent cross fold education or, in the case of the second longitudinal fold, the avoidance of Pinch folds can facilitate.

In further training of the overarching measures can the second longitudinal folding device an optional activatable, preferably on the frame of the second longitudinal folding device attached longitudinal perforation device be upstream. The longitudinal perforation makes it easier Production of the second longitudinal fold. By the fastener supply of the longitudinal perforation device on the frame of the second  Longitudinal folding device results in an advantageous manner also an automatic adjustment of the longitudinal perforation device together with the adjustable second longitudinal folding device.

Another useful measure can be that the collecting cylinder offset two against each other Folding cylinders are assigned. This allows Gaps between the produce successive products so that these can be braked in an advantageous manner what a comparatively slow run of the entire Ausle device downstream of the cross folder enables.

Further training and advantageous developments the overriding measures result from the standing description of an embodiment hand of the drawing in connection with the remaining Un claims.

The only figure in the drawing shows a side view of a folder according to the invention with an upstream Folder in a schematic representation.

The two parallel side walls 1 , according to the invention folding device is arranged with its inlet below a first longitudinal folding device forming former 2 , which is attached to the machine frame one of the Falzappa rat 1 upstream, not shown printing machine. The printed in the printing press te paper web 3 is drawn to form a first longitudinal fold over the former 2 , the folding rollers 4 can be arranged downstream, between which the folded Pa pier web 3 runs. In the illustrated embodiment, the former 2 is a GE by a cutter disc formed slitting device 5 , which can optionally be placed in and out of operation and is arranged so that the paper web 3 is cut open at the location of the first Längenfal zes and thus split into halved web can.

In the area of the folder inlet located below the former, two pairs of pull rollers are provided, each with at least one driven and one pivotable roller. The rollers of the pairs of pull rollers 6 can be designed as so-called sandwich rollers, in which steel and rubber rings are arranged side by side. Below the traction rollers there is a cross cutting device 7 which can be changed from cut to half order to cut to a quarter circumference based on the plate or forme cylinder of the double circumference printing machine arranged upstream and vice versa. The cross-cutting device 7 consists of a knife cylinder 8 and a slot cylinder 9 . The groove cylinder 9 is provided with two grooves 10 offset by 180 ° with respect to one another. The knife cylinder 8 has two knife receiving points 11 offset by 180 °, into which a knife bar 13 with a knife 12 can be inserted. When cutting to a quarter of the circumference, both measuring points 11 are occupied by a knife bar 13 . When cutting to half the circumference, only one knife receiving point 11 is occupied. In this case, the groove for cutting the paper web 3 required knife receiving point 11 can be occupied with a perforating knife for the manufacture of a transverse perforation.

On the cross-cutting device 7 is followed by interposition of an acceleration section 14, a cross-folding device 15 . The acceleration section 14 which can be driven as a variable speed enables the format variation required in the case of a variable folder. The transverse folding device 15 comprises a Grei remote 16 or 17 and folding knives 18 occupied cylinder 19 , which here with two offset against each other on its circumference, with grippers 20 and 21 and Falzklap pen 22 provided folding cylinders 23 cooperates. The collecting cylinder 19 and the two folding cylinders 23 each consist of two multi-armed armatures 24 , 25 and 26 , 27 , which can be rotated with respect to one another, for receiving the fittings in the form of the grippers 16 , 17 or 20 , 21 and the folding knife 18th and the flaps 22 serve. The grippers 16 and 17 of the collecting cylinder 19 form two sets of grippers, namely a first set with each 24 recorded grippers adjacent to a folding blade 18 on an arm of the fold blade 18 receiving fittings carrier 17 and a second set with the arms of the only instrument holder 25 with grippers on taken grippers 16 . The grippers of the collecting cylinder 19 can be changed over from collective production to uncollected production. Accordingly, this gripper can be designed as a flat single gripper, which grasp in a production known per se in collective production. The grippers 20 , 21 of the two folding cylinders 23 also form two sets of grippers, namely a first set with the respective ones arranged next to a folding flap 22 , together with the respectively adjacent folding flap 22 on one arm of the same fitting carrier 26 , grippers 20 and a second set with the in each case on one arm of the further gripper bracket 27 , which is only occupied by grippers 27 .

The arranged next to a folding knife 18 Grei fer 17 of the collecting cylinder 19 can be activated as an alternative to the folding knives 18 . The grippers 16 of the second gripper set of the collecting cylinder 19 can be activated, depending on the type of production, together with or as an alternative to the folding blades 18 and thus with or without the grippers 17 of the first gripper set. The grippers 20 and 21 of the two folding cylinders 23 , depending on the type of production, can be activated alternatively to the folding jaws 22 or, alternatively, alternatively to one another and interacts with the meshing area in the cylinder contact area which simultaneously activates the grippers of the collecting cylinder 19 . By selectively activating the various fittings of the collecting cylinder 19 and folding cylinder 23 , a high degree of versatility can thus be achieved.

In cross fold production, the folding knife 18 and the flaps 22 are activated and adjusted so that they interact in the cylinder contact area, as indicated in the drawing, which is based on an adjustment with cross fold production, in the contact area between the collecting cylinder 19 and the upper folding cylinder 23 . Simultaneously with the folding knives 18 , the grippers 16 of the collecting cylinder 19 received on the separate armature carrier 25 are activated in transverse folding production and hold the front ends of the products transferred from the acceleration path 14 to the collecting cylinder 19 until the transverse fold is carried out. The grippers 17 of the second gripper set on the collecting cylinder side are not required in cross fold production and can be passivated. The same applies to the grippers of the two Falzzylin 23 . If products without a transverse fold are to be produced, the folding knives 18 and the folding flaps 22 are passivated and, depending on the section length, are activated on a quarter circumference or half a circumference both gripper sets or only one gripper set of collecting cylinder 19 and folding cylinder 23 . The individual products who from the gripper cylinder-side grippers to the cylinder contact area hereby engaging grippers of the folding cylinder 23 or a folding cylinder 23 ben. If all the grippers are required, which is the case when cutting to a quarter of a circumference, the armatures 24 and 26 of the collecting cylinder 19 and folding cylinder 23 , which are occupied simultaneously with the grippers 17 and the folding knives 18 or the grippers 20 and the folding flaps 22 , are compared the other Arma turträger 25 and 27 rotated that the grippers 17 and 20 come into the position that the folding knife 18 or folding flaps 22 take in Querfalzpro production. The armatures 24 and 26 assigned to the folding blades 18 and folding flaps 22 are in mutual tooth engagement and can therefore be adjusted both for regulating the folding and for accomplishing the above-described gripper setting. The adjustment can take place by means of a regulating device 28 indicated here in the form of a handwheel.

The collecting cylinder 19 can be odd-numbered, z. B. as here, five parts. Depending on the fittings 24 and 25 have three, as here five, seven or so more arms, each with a gripper 16 or a gripper 17 and a folding knife 18 . The distance between the grippers of each gripper set or the arms of the two fitting supports of the collecting cylinder 19 is somewhat larger than the largest processable format length, that is to say half the circumference of the largest possible plate or forme cylinder, so that even when processing half the circumference cut products in which, as already mentioned, only one gripper set is activated, results in trouble-free operation. The individual or jointly operable folding cylinder 23 can be evenly divided into several parts, e.g. B. as here, four parts. If only one folding cylinder 23 is provided, its fittings have carriers 26 , 27 each having an equal number of arms, so that products cut to a quarter circumference can also be passed without problems. In the case of Darge presented embodiment with two alternatively beatable folding cylinders 23 , there is the peculiarity that both sets of grippers each need only two by 180 ° against each other the offset grippers 20 and 21 . Accordingly, of the four folding jaws 22 provided here, only two folding jaws, which are offset by 180 ° relative to one another, are positioned next to a gripper 22 and the dashboard 27 assigned to the other gripper set has only two arms, each with one gripper. The distance between the gripper of the folding cylinder 23 , which is accommodated on the same dashboard, corresponds to the gripper distance on the collecting cylinder side.

Each folding cylinder 23 is in the illustrated embodiment, for example, a second longitudinal folding device 29 designed as a sword folding mechanism with an associated longitudinal folding device 30 in the form of a paddle wheel interacting with a transport belt, and an alternative, separately activatable, transverse folding folding device 31 , also in the form of a belt interacting paddle wheel, downstream. The transport of the products from the upstream folding cylinder 23 to the associated cross-folding delivery device 31 or second longitudinal folding device 29 is carried out by a band guide 32 , which is only schematically indicated here, which passes through the associated second longitudinal folding device 29 and above the paddle wheel of the associated cross-folding delivery device 31 in the form of a u. U. provided with a tail brake ejection wedge 33 ends. If the second longitudinal folding device 29 is activated, the products running over the band guide 32 in question are delivered via the associated longitudinal folding delivery device 30 . If products are produced without a second longitudinal fold, it follows the display regardless of whether the transverse fold device 15 is activated or not, via the transverse fold lay-out device 31 downstream of the second longitudinal fold device 29 . The products removed from the folding cylinders 23 are passed through the belt guide 32 through the second longitudinal folding device 29 . The second longitudinal folding device 29 can optionally be assigned together with its activatable longitudinal perforating device 34 . This can be fastened in alignment with the folding knife on the frame of the associated second longitudinal folding device 29 , so that the associated longitudinal perforating device is automatically also adjusted when the second longitudinal folding device is adjusted.

In the case of cross fold production, there are gaps between the successive products. The same applies in the case of an alternate loading of the two folding cylinders 23 which are offset with respect to one another. The products entering the belt guide 32 can accordingly be braked by reducing the length of the gaps to achieve a comparatively slow running of the laying devices by means of a suitable brake device 35 . For this purpose, the belt guide 32 can have two toothed sections, which are driven at gradual speeds. In the illustrated embodiment, the braking device 35 is designed as brake rollers provided with brake shoes.

The collecting cylinder 19 is, as already indicated above, switchable from uncollected production to collecting production and vice versa. The products collected on top of each other can be connected to each other. For this purpose, the collecting cylinder 19 can be assigned to the folding cylinders 23 in front of an ordered stapler 36 or a device for carrying glue strips etc.

The folder shown, like the above guides should be recognizable, a versatile ver reversible, variable folding and trimming apparatus that enable the production of an extensive range of products light, e.g. B. the manufacture

• a) once lengthways and then once crosswise Products,  
• b) once lengthways and then once across and then again longitudinally folded products,
• c) cut open in the area of the first longitudinal fold Products that cross once and then once are folded lengthways
• d) only twice longitudinally folded products,
• e) cut open in the area of the first longitudinal fold and then by means of the second longitudinal folding device products with a longitudinal fold,
• f) longitudinally folded products only once,
• g) not folded at all, d. H. also in the area of first longitudinal fold of cut sections.

All types of production apply regardless of the number of benefits on the plate or form cylinder circumference in principle for each section length, although the production types a) to e) most for half the scope and the production types f) and g) most for a quarter Scope of cut products, each related to a plate or Forme cylinders with two uses on the circumference (so-called double circumference machine) come into question. If there is only one use on the circumference (single circumference machine), the result is a cut to the full circumference for a) to e) and the cut to half the circumference for f) and g). An even smaller format would be possible if the knife cylinder 8 contains more knives accordingly.

Claims (15)

1. folding apparatus, in particular variable folding apparatus, with an upstream, preferably designed as a former, first longitudinal folding device ( 2 ) and with at least one transverse folding device ( 15 ) with a folding cylinder ( 18 ) and grippers ( 16 ) set collecting cylinder ( 19 ), one transverse cutting means (7) preferably having thereon connect the acceleration section (14) are arranged upstream and the cylinder having at least one set with the folding blades (18) associated with the folding jaws (22) hinged (23) cooperates, at least one delivery unit, preferably, fixing means an Querfalzaus ( 31 ) and a second longitudinal folding device ( 29 ) with associated longitudinal folding laying device ( 30 ) is or are subordinate, characterized in that the two multi-arm, mutually adjustable dashboard ( 24 or 25 ) ent containing collecting cylinder ( 19 ) two sets of Has grippers ( 16 or 17 ), of which the grippers ( 17 ) of one Set in each case next to a folding knife ( 18 ) on the associated instrument carrier ( 24 ) and alternatively to the folding knives ( 18 ) can be activated and the grippers ( 16 ) of the other gripper set, which together with the grippers ( 17 ) of the first Gripper set or the folding knives ( 18 ) can be activated, on a separate fitting support ( 25 ), that each also contains two multi-armed, mutually adjustable fitting supports ( 26 or 27 ) folding cylinders ( 23 ) also two sets of alternative to each other and / or alternatively to the folding flaps ( 22 ) which can be activated and interact with the simultaneously activated grippers of the collecting cylinder ( 19 ) with grippers ( 20 or 21 ), from which the grippers ( 20 ) of one set of grippers each have a folding flap ( 22 ) the associated valve holder ( 26 ) and the grippers ( 21 ) of the other set of grippers on a separate armature carrier ( 27 ) are added, and that the transverse cutting device ( 7 ) can be changed from one section length to another section length which is half as large and vice versa. 2. Folding apparatus according to claim 1, characterized in that the cross-cutting device ( 7 ) from cut to half circumference to cut to a quarter circumference is convertible bar. 3. Folding apparatus according to one of the preceding claims, characterized in that the cross-cutting device ( 7 ) one with two by 180 ° against each other ver, optionally with knives ( 12 ) occupable knife receiving points ( 11 ) provided knife cylinder ( 8 ) and a preferably with comprises two groove cylinders ( 9 ) provided with grooves ( 10 ) offset from one another by 180 °. 4. Folding apparatus according to one of the preceding claims, characterized in that the knives ( 12 ) of the cross cutting device ( 7 ) are each inserted on a detachable into an associated knife receiving point ( 11 ) insertable knife bar ( 13 ). 5. Folding apparatus according to any one of the preceding claims, characterized in that a knife of the transverse folding device ( 7 ) is designed as a transverse perforating knife in transverse fold production. 6. Folding apparatus according to one of the preceding claims, characterized in that a longitudinal cutting device ( 5 ) is provided in the region of the first longitudinal folding device ( 2 ). 7. Folding apparatus according to one of the preceding claims, characterized in that in the case of a second longitudinal folding device, the transverse folding delivery device ( 31 ) of the second longitudinal folding device ( 29 ) is net. 8. Folding apparatus according to claim 7, characterized in that the one of the transverse folding device ( 15 ) GE folding cylinder ( 23 ) to the Querfalzauslegeeinrich device ( 31 ) leading tape guide ( 32 ) passes through the associated second longitudinal folding device ( 29 ). 9. Folding apparatus according to one of the preceding claims, characterized in that the second longitudinal folding device ( 29 ) is an optionally activatable, preferably in front of the frame of the second longitudinal folding device attached longitudinal perforating device ( 34 ) is net. 10. Folding apparatus according to one of the preceding claims, characterized in that the collecting cylinder ( 19 ) are assigned two mutually offset, with folding flaps ( 22 ) provided folding cylinder ( 23 ). 11. Folding apparatus according to one of the preceding claims, characterized in that a braking device ( 35 ) is arranged downstream of the folding cylinder or the folding cylinders ( 23 ). 12. Folding apparatus according to one of the preceding claims, characterized in that with the folding knives ( 18 ) and grippers ( 17 ) or with folding jaws ( 22 ) and grippers ( 20 ), the instrument carrier ( 24 or 26 ) is occupied relative to the other instrument carrier ( 25 or 27 ) is adjustable. 13. Folding apparatus according to claim 12, characterized in that with the folding flaps ( 22 ) and grippers ( 20 ) occupied fitting carrier ( 26 ) and the folding knife ( 18 ) and grippers ( 17 ) occupied fitting holder ( 24 ) are in mutual tooth engagement and are jointly adjustable by means of a common regulating device ( 28 ). 14. Folding apparatus according to one of the preceding claims, characterized in that the collecting cylinder ( 19 ) is an even number of parts, preferably five parts, and that the folding cylinder or the folding cylinder ( 23 ) is an even number of parts, preferably four parts, is or are. 15. Folding apparatus according to claim 10, characterized in that only half of the folding jaws ( 22 ) are received together with an adjacent gripper ( 20 ) on one arm of the associated fitting support ( 26 ) and that the fittings are only occupied by grippers ( 21 ) Carrier ( 27 ) has only half as many arms as the fitting carrier ( 26 ) carrying the jaws ( 22 ).