EP2743072B1 - Creasing method - Google Patents
Creasing method Download PDFInfo
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- EP2743072B1 EP2743072B1 EP13196601.2A EP13196601A EP2743072B1 EP 2743072 B1 EP2743072 B1 EP 2743072B1 EP 13196601 A EP13196601 A EP 13196601A EP 2743072 B1 EP2743072 B1 EP 2743072B1
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- European Patent Office
- Prior art keywords
- pairs
- creasing
- tool
- tools
- shafts
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- 238000000034 method Methods 0.000 title claims description 16
- 239000000463 material Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 230000001419 dependent effect Effects 0.000 claims description 4
- 230000000295 complement effect Effects 0.000 claims 1
- 238000005452 bending Methods 0.000 description 11
- 238000005096 rolling process Methods 0.000 description 7
- 239000011230 binding agent Substances 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/08—Creasing
- B31F1/10—Creasing by rotary tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42C—BOOKBINDING
- B42C7/00—Manufacturing bookbinding cases or covers of books or loose-leaf binders
- B42C7/005—Creasing the back of covers
Definitions
- the present invention relates to a method for introducing a plurality of spaced apart grooves in sheets or sheets of a printing material according to the preamble of claim 1.
- envelope material which finds use later as an envelope is grooved in the form of sheets or sheets before it is glued to a book block.
- Each subsequent quotation of the term printed sheet also includes the envelope material webs.
- the purpose of the creasing is to make the cover material bend-soft along a future bending edge of the cover or to preform it. In essence, this relates to the edges between the spine and the flat sides of the printed product, the bending edge of a subsequent to the spine side gluing to open the envelope and the bending edges of envelopes with embarked flaps.
- Another method to create defined bending edges is embossing. Instead of co-operating, rotating discs designated here as a die and patrille pre-rails are used with which the bending edges are embossed in the envelope. This method produces more accurate bending edges but, because of the increased expense, is typically used only in the production of higher value products.
- the grooves produced with such devices are concave on one side of the envelope and convex on the opposite side.
- On which side of the envelope which groove shape is to be produced results from the function of the relevant groove on the cover of the finished book, namely as a back edge or as a bending edge for opening and closing the cover.
- a first, usually inner clamp jaw of a conveyor block for conveying a book block by an adhesive binder defines a fixed edge that can be fixed transversely to the conveying direction.
- a second, the first opposite clamp jaw of the transport clamp in an adjustable transversely to the conveying direction position adjustable to adapt to the respective book block thickness. Accordingly, even with a creasing device with two tool pairs of creasing tools, the one tool pair is set to the fixable position, while the other tool pair is adjustable according to the book block thickness.
- the waves of the adjustable tool pair are usually mounted at their two ends in common bearing units, so that the position of the grooves on the sheet can be adjusted to the book block thickness with a common adjusting device.
- a common adjusting device For generating additional grooves, either further pairs of tools of scoring tools are arranged on the shafts, or the dies and dies of corresponding scoring tools are attached to one and the same pair of tools arranged. There are scoring tools, where the distance between the grooves can be adjusted manually.
- the creasing device In order to transport a printed sheet through the creasing device can additionally be arranged on the shafts of the creasing tools elastically coated conveyor rollers.
- the printing sheet transport can also be done with conveyor rollers or rollers, which are arranged on separate transport shafts.
- the groove serving as the back edge is designed with a convex, outwardly directed curvature and the groove serving as a bending edge with a concave, inwardly directed curvature.
- Outside and inside refers to the seen from the inside book block direction.
- the convex curvature of the groove serving as the back edge causes problems with certain envelopes. This is particularly the case for envelopes where the paper direction is wrong, or which are made of paper with very short fibers, or for UV-coated envelopes. In these envelopes, the pressure of the press tends to rupture on the outward curvature of the groove, rupturing the ink and making paper tears visible.
- it is advantageous if the groove serving as the back edge is curved inward. In the previously known scoring a change in the curvature of the grooves is possible only by a manual change of scoring tools.
- the DE202009008741 U1 describes a creasing device in which the creasing tools are mounted in separable parts of a frame, whereby the cost of replacing creasing tools and the removal of dammed-up envelopes significantly reduced.
- the upper part of the frame must be complete with all stored therein axes are folded up, for which a great effort is needed.
- the WO0198088 A1 discloses a creasing device in which the distance between the grooves serving as the back edge is automatically adjusted according to the book block thickness measured in the transport clamp of the perfect binder.
- the distance from the groove serving as the back edge to the groove serving as the bending edge is independent of the book block thickness and rarely needs to be changed so that an automatic adjustment of this distance is not provided here. If necessary, this distance can be changed by means of manually adjustable scoring tools or by the complete replacement of scoring tools. A change in the curvature of the grooves is also possible here only by a manual change of scoring tools.
- the scoring device consists essentially of two scoring units, each with two pairs of cooperating scoring tools.
- a scoring tools a creasing knife and a scoring die are each formed and arranged on counter-rotating, parallel superimposed waves.
- the object of the invention is to provide generic methods for introducing a plurality of grooves in printing sheets or in webs of a printing material, which allow a simple and fast conversion of the respective groove shapes.
- this object is achieved by a method in which at least one of the pairs of tools of a scoring device together with its shafts and in an intermeshing state of its scoring tools from its working position in the direction of the other tool pair and beyond its current position is moved to a new work item corresponding to a subsequent work order.
- a first tool pair is fixed in a first working position and a second tool pair is displaced into a second working position dependent on the first working position and on the further work order.
- the first or the second tool pair can thereby be positioned in a so-called fixed edge position and the other tool pair in a book thickness-dependent position.
- a common mounting of a first pair of tools together with the shafts and the scoring tools and / or a common mounting of a second pair of tools can be moved together with the shafts and the scoring tools.
- brackets of the shafts are displaced via actuators, this can advantageously lead to a simplification of the operability.
- a controller which sends control signals to the actuators for adjusting the pairs of tools, this leads to a higher degree of automation and consequently requires less manual intervention by an operator.
- the scoring device can be adapted to the requirements advantageous for the processing of each book block to be produced accordingly.
- a scoring device 1 is shown simplified.
- a frame 11 on which two substantially mutually parallel brackets 7, 8 are arranged slidably.
- the brackets 7, 8 serve as a receiving location for parallel shafts 20, 21, 30, 31 at its two end faces, wherein on each of the shafts 20, 21, 30, 31 depending on a creasing tool 3, 4; 5, 6 is arranged.
- the front scoring tools 3, 4 together form a first, front pair of tools 41 and the rear scoring tools 5, 6 together form a second, rear pair of tools 42.
- the scoring tools 3, 4 of the first pair of tools 41 are at an axial distance 29 from the scoring tools 5 6 of the second tool pair 42.
- the shafts 20, 21, 30, 31 each have a drive wheel 15 at one of their ends.
- front and “back” tool pairs 41, 42 refer to the illustration according to Fig. 1 and Fig. 2 , where in Fig. 1 a designated by the arrow A view of the creasing device 1 in Fig. 1a and one in Fig. 2 with the arrow B view of the creasing device 1 in Fig. 2a is shown enlarged as a detailed view.
- Fig. 1a and 2a The front scoring tools 3, 4 with the associated shafts 20, 21 each partially hide the rear scoring tools 5, 6 with the associated shafts 30, 31.
- the brackets 7, 8 are arranged laterally displaceable relative to the frame 11 via a respective actuator 9, 10 arranged on the frame 11. This allows the recorded in the holders 7, 8 shafts 20, 21; 30, 31 and thus the scoring tools 3, 4; 5, 6 in the axial direction of the shafts 20, 21; 30, 31 and thus transversely to a conveying direction F of be moved with the creasing device 1 to be printed sheet 2.
- a controller 75 is as in Fig. 1 and 2 shown connected to the actuators 9, 10.
- the holders 7, 8 are arranged in the frame 11 in such a way that they each have guides 13, 14 connected to the frame 11, wherein each holder 7, 8 is arranged displaceably in a guide 13, 14 transversely to the conveying direction F relative to the frame 11 ,
- the waves 20, 21; 30, 31 are, as in Fig. 3 represented, in each case by means of rolling or sliding bearings 22, 23 rotatably mounted in half bearing shells 25, 27 of the holders 7, 8.
- a closure mechanism 24, each with a hold-down 26 and a spring-biased in this, guided pin 28 is arranged.
- a one in the axial direction elongated ring gear 16 having drive wheel 12 of the creasing device 1 with each at one end of the shafts 20, 21; 30, 31 arranged drive wheels 15 in engagement. Due to the design of the drive wheel 12 with the ring gear 16, a frictional connection is ensured even with a lateral displacement of the drive wheels 15.
- the drive wheel 12 is connected to the main drive of a cooperating with the creasing device, not shown, print finishing device, for example with an adhesive binder or a saddle stitcher, or connected to a separate drive.
- the scoring tools 3, 4; 5, 6 each have a survey 17 and a spaced-apart recess 18 around its cylindrical body.
- the elevations 17 and the recesses 18 are on the opposite scoring tools 3, 4; 5, 6 of a tool pair 41, 42 mirror-symmetrical to an imaginary center plane 70 of the tool pairs 41, 42 and arranged complementarily, i. each elevation 17 fits into a respective recess 18 of the opposing scoring tool 3, 4; 5, 6.
- Fig. 1 are the creasing tools 3, 4; 5, 6 of the creasing device 1 shown in a first processing position 51, which is used for the production of a in Fig. 1b shown envelope 101 is required.
- this envelope 101 two first, viewed from a book block 100 outwardly directed (convex), in the finished book serving as back edges grooves are shown.
- FIG 3 is the attachment of the scoring tools 3, 4; 5, 6 or the shafts 20, 21; 30, 31 on the brackets 7, 8 shown from a different perspective.
- the description is made here only for one end face of the holder 8, but applies analogously both for their opposite end face and for the holder 7.
- the scoring tools 5, 6 are fixedly arranged on their shafts 30, 31, which in turn by means of rolling or sliding bearings 22, 23 are rotatably mounted in the half bearing shells 25, 27 of the holder 8.
- a closure mechanism 24 is disposed above the upper rolling or sliding bearing 23.
- a hold-down 26 with a pin 28 is arranged.
- the printing sheets 2 or webs of the creasing device 1 are first fed in a conveying direction F, in a serial stream, as in Fig. 1 and 2 indicated.
- the promotion of the printed sheet 2 or webs in the creasing device 1 takes place by the creasing tools 2, 3; 4, 5 and / or additionally on the shafts 20, 21; 30, 31 arranged conveyor rollers and / or arranged on their own waves conveyor rollers or conveyor rollers by frictional engagement (not shown for clarity in the drawings).
- at least the lower scoring tools 3, 5 or the upper scoring tools 4, 6 and / or conveyor rollers and / or conveyor rollers are driven.
- the likewise rotatably driven second pair of tools 42 of the scoring tools 5, 6 is moved by adjusting the holder 8 via the drive 10 with respect to the conveying direction F to the left.
- This process also takes place in pairs, each in an intermeshing state of the scoring tools 4, 5 of the second tool pair 42, wherein the shafts 30, 31 are displaced by adjusting the holder 8 along its axis and non-positively along the drive wheel 16.
- the drive of the creasing device 1 is effected by the drive wheel 12, which is connected to the main drive of the perfect binder via a gear or via an electric shaft, or with a separate drive.
- the power transmission from the drive wheel 12 via an extended from its sprocket 16 and the form-fittingly connected to this drive wheels 15 of the shafts 20, 21; 30, 31 formed gear transmission 19, which ensures a permanent power transmission.
- the actuators 9, 10 are in a first processing position 51, which corresponds to a normal position, according to Fig. 1 shifted so that the creasing tools 3, 4 are aligned to the fixed edge position and the creasing tools 5, 6 depending on the desired book block thickness in a variable position.
- this first processing position 51 arise when editing the sheet 2 of a printing material with the creasing device 1 envelopes with grooves 61, 62 according to Fig. 1b ,
- the controller 75 sends to adjust the tool pairs control signals to the actuators 9, 10th
- the actuators 9, 10 are in a second working position 52 according to Fig. 2 shifted so that the scoring tools 5, 6 are aligned to the fixed edge position and the scoring tools 3, 4 depending on the desired book block thickness in a variable position.
- this second working position 52 arise when editing the sheet 2 of a printing material with the creasing device 1 envelopes with grooves 61, 62 according to Fig. 2b ,
- a disassembly of the scoring tools 5, 6 may, in consideration of Fig. 3 be traced.
- a closure mechanism 24 is released, so that the rolling or sliding bearing 23 of the upper shaft 31 rests only on the half bearing shell 27 of the holder 8 and thus the complete shaft 31 can be removed from the holder 8.
- the hold-down 26, whose spring-biased pin 28 fixes the rolling or sliding bearing 22 of the lower shaft 30 in the half bearing shell 25, is freely displaceable upwards.
- the lower shaft 30 can be removed from the holder 8.
- the half bearing shell 25 of the lower shaft 30 is adjusted vertically.
- the hold-down is part of the function of the locking mechanism.
- the locking mechanism pushes the upper shaft into the upper half bearing shells of the bracket.
- the bearing presses on the hold-down device which presses the lower shaft into the lower half-bearing shells of the holder via the spring-loaded pin.
- Fig. 2, 2a, 2b essentially correspond to the Fig. 1, 1a, 1b , However, in Fig. 2 the scoring tools 3, 4; 5, 6 of the creasing device 1 shown in a second working position 52, which is used for the production of a in Fig. 2b shown envelope 101 is required.
- this envelope two first, seen from the book block 100, inwardly directed (concave), in the finished book serving as back edges grooves 61 are shown.
- two second, as viewed from the book block 100, but outwardly directed (convex), in the finished book as bending edges for opening the envelope 101 serving grooves 62 are formed, the latter being arranged from the book block 100 slightly further than the first two grooves 61 ,
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Description
Die vorliegende Erfindung betrifft ein Verfahren zum Einbringen von mehreren voneinander beabstandeten Rillen in Druckbogen oder Bahnen eines Bedruckstoffes gemäss dem Oberbegriff des Anspruchs 1.The present invention relates to a method for introducing a plurality of spaced apart grooves in sheets or sheets of a printing material according to the preamble of claim 1.
Bei der Buchherstellung wird später als Umschlag Verwendung findendes Umschlagmaterial in Form von Druckbogen oder Bahnen gerillt, bevor es mit einem Buchblock verklebt wird. Jede nachfolgende Anführung des Begriffs Druckbogen schliesst ausserdem auch das Umschlagmaterial Bahnen ein. Mit der Rillung wird bezweckt, das Umschlagmaterial entlang einer zukünftigen Biegekante des Umschlags biegeweich zu gestalten oder vorzuformen. Im Wesentlichen betrifft dies die Kanten zwischen dem Buchrücken und den flächigen Seiten des Druckproduktes, die Biegekante einer an den Buchrücken anschliessenden Seitenbeleimung zum Öffnen des Umschlages und die Biegekanten von Umschlägen mit eingeschlagenen Klappen.In book production, envelope material which finds use later as an envelope is grooved in the form of sheets or sheets before it is glued to a book block. Each subsequent quotation of the term printed sheet also includes the envelope material webs. The purpose of the creasing is to make the cover material bend-soft along a future bending edge of the cover or to preform it. In essence, this relates to the edges between the spine and the flat sides of the printed product, the bending edge of a subsequent to the spine side gluing to open the envelope and the bending edges of envelopes with embarked flaps.
Eine andere Methode definierte Biegekanten zu erzeugen ist das Prägen. Anstelle von zusammenwirkenden, rotierenden Scheiben werden hier als Matrize und Patrize bezeichnete Prägeschienen verwendet, mit denen die Biegekanten in den Umschlag geprägt werden. Dieses Verfahren erzeugt genauere Biegekanten, findet aber wegen des erhöhten Aufwands in der Regel nur bei der Herstellung von höherwertigen Produkten Anwendung.Another method to create defined bending edges is embossing. Instead of co-operating, rotating discs designated here as a die and patrille pre-rails are used with which the bending edges are embossed in the envelope. This method produces more accurate bending edges but, because of the increased expense, is typically used only in the production of higher value products.
Die mit solchen Vorrichtungen erzeugten Rillen sind auf einer Seite des Umschlags konkav und auf der gegenüberliegenden Seite konvex ausgebildet. Auf welcher Seite des Umschlags welche Rillenform zu erzeugen ist, ergibt sich aus der Funktion der betreffenden Rille am Umschlag des fertiggestellten Buchs, nämlich als Rückenkante oder als Biegekante zum Öffnen und Schliessen des Umschlags.The grooves produced with such devices are concave on one side of the envelope and convex on the opposite side. On which side of the envelope which groove shape is to be produced results from the function of the relevant groove on the cover of the finished book, namely as a back edge or as a bending edge for opening and closing the cover.
Es ist bekannt, in einen aus einem Druckbogen gebildeten Umschlag mehrere Rillen in einem einzigen Arbeitsgang einzubringen oder alternativ für jede Rille einen separaten Arbeitsgang durchzuführen. Bei manchen Druckweiterverarbeitungsvorrichtungen, wie beispielsweise bei Klebebindern und Sammelheftern, erfolgt das Rillen als eine integrierte Operation im Bindeprozess. Einige Lösungen nach dem Stand der Technik weisen auf zwei parallelen Wellen angeordnete, gegeneinander gerichtete, paarweise zusammenwirkende Rillwerkzeuge auf, zwischen denen Druckbogen durchgefördert und gleichzeitig gerillt werden. Ein Rillwerkzeug eines solchen Werkzeugpaares weist am Umfang eine konkave Form, auch "Matritze" genannt, und das andere Rillwerkzeug desselben Werkzeugpaares eine zur konkaven Form passende konvexe Form, auch "Patritze" genannt, auf, die geometrisch derart gestaltet sind, dass beim Rillen die gewünschte Rillenform am Druckbogen gebildet wird. Wenigstens ein Rillwerkzeug eines zusammenwirkenden Werkzeugpaares ist angetrieben. Die Wellen der Rillwerkzeuge sind in ihren Endbereichen in die Wellenpaare verbindenden Lagerstellen gelagert. Solche Vorrichtungen können zum Erzeugen mehreren Rillen auch mehrere Werkzeugpaare von Rillwerkzeugen aufweisen.It is known to introduce in an envelope formed from a sheet several grooves in a single operation or alternatively perform a separate operation for each groove. In some print finishing devices, such as perfect binders and saddle stitchers, the score is an integrated operation in the binding process. Some solutions according to the prior art have, arranged on two parallel shafts, oppositely directed, pairwise cooperating scoring tools, between which printed sheets are conveyed through and grooved at the same time. A creasing tool of such a tool pair has on the circumference a concave shape, also called "die", and the other creasing tool of the same pair of tools a convex shape matching the concave shape, also called "patrix", which are geometrically designed so that the grooves desired groove shape is formed on the sheet. At least one scoring tool of a cooperating pair of tools is driven. The shafts of the scoring tools are mounted in their end regions in the shaft pairs connecting bearing points. Such devices can also have a plurality of tool pairs of scoring tools for generating a plurality of grooves.
Um die Rillwerkzeuge einem bestimmten Buch- und/oder Umschlagformat anzupassen, müssen diese entsprechend verstellbar sein. Eine erste, in der Regel innere Klammerbacke einer dem Fördern eines Buchblocks durch einen Klebebinder dienenden Transportklammer definiert eine quer zur Förderrichtung festlegbare Fixkante. Dagegen ist eine zweite, der ersten gegenüberliegende Klammerbacke der Transportklammer in einer quer zur Förderrichtung variablen Position verstellbar ausgebildet, um sich der jeweiligen Buchblockdicke anzupassen. Dem entsprechend ist auch bei einer Rillvorrichtung mit zwei Werkzeugpaaren von Rillwerkzeugen das eine Werkzeugpaar auf die festlegbare Position eingestellt, während das andere Werkzeugpaar entsprechend der Buchblockdicke verstellbar ist. Dazu sind die Wellen des verstellbaren Werkzeugpaares in der Regel an ihren beiden Enden in gemeinsamen Lagereinheiten gelagert, sodass sich die Lage der Rillen auf dem Druckbogen mit einer gemeinsamen Stelleinrichtung auf die Buchblockdicke einstellen lässt. Zum Erzeugen zusätzlicher Rillen werden entweder weitere Werkzeugpaare von Rillwerkzeugen auf den Wellen angeordnet oder die Matrizen und Patrizen entsprechender Rillwerkzeuge sind an ein und demselben Werkzeugpaar angeordnet. Dabei gibt es Rillwerkzeuge, bei denen der Abstand zwischen den Rillen manuell verstellt werden kann.In order to adapt the scoring tools to a specific book and / or envelope format, they must be correspondingly adjustable. A first, usually inner clamp jaw of a conveyor block for conveying a book block by an adhesive binder defines a fixed edge that can be fixed transversely to the conveying direction. In contrast, a second, the first opposite clamp jaw of the transport clamp in an adjustable transversely to the conveying direction position adjustable to adapt to the respective book block thickness. Accordingly, even with a creasing device with two tool pairs of creasing tools, the one tool pair is set to the fixable position, while the other tool pair is adjustable according to the book block thickness. For this purpose, the waves of the adjustable tool pair are usually mounted at their two ends in common bearing units, so that the position of the grooves on the sheet can be adjusted to the book block thickness with a common adjusting device. For generating additional grooves, either further pairs of tools of scoring tools are arranged on the shafts, or the dies and dies of corresponding scoring tools are attached to one and the same pair of tools arranged. There are scoring tools, where the distance between the grooves can be adjusted manually.
Um einen Druckbogen durch die Rillvorrichtung zu transportieren können auf den Wellen der Rillwerkzeuge zusätzlich elastisch beschichtete Förderrollen angeordnet sein. Der Druckbogentransport kann aber auch mit Förderrollen oder -walzen erfolgen, die auf separaten Transportwellen angeordnet sind.In order to transport a printed sheet through the creasing device can additionally be arranged on the shafts of the creasing tools elastically coated conveyor rollers. The printing sheet transport can also be done with conveyor rollers or rollers, which are arranged on separate transport shafts.
In der Regel ist die als Rückenkante dienende Rille mit einer konvexen, nach aussen gerichteten Wölbung und die als Biegekante dienende Rille mit einer konkaven, nach innen gerichteten Wölbung ausgeführt. Aussen und innen bezieht sich hier auf die vom innenliegenden Buchblock aus gesehene Richtung. Die konvexe Wölbung der als Rückenkante dienenden Rille führt bei gewissen Umschlägen zu Problemen. Dies ist insbesondere bei Umschlägen, bei denen die Papierlaufrichtung falsch gewählt ist, oder die aus Papier mit sehr kurzen Fasern bestehen, oder bei UV-lackierten Umschlägen der Fall. Bei diesen Umschlägen neigt das Papier durch die Belastung des Anpressvorgangs dazu, auf der nach aussen gerichteten Wölbung der Rille aufzuplatzen, wodurch die Druckfarbe aufgerissen wird und Papierrisse sichtbar werden können. Für solche Umschläge ist es vorteilhaft, wenn die als Rückenkante dienende Rille nach innen gewölbt ist. Bei den bisher bekannten Rillvorrichtungen ist eine Änderung der Wölbung der Rillen nur durch ein manuelles Wechseln der Rillwerkzeuge möglich.As a rule, the groove serving as the back edge is designed with a convex, outwardly directed curvature and the groove serving as a bending edge with a concave, inwardly directed curvature. Outside and inside here refers to the seen from the inside book block direction. The convex curvature of the groove serving as the back edge causes problems with certain envelopes. This is particularly the case for envelopes where the paper direction is wrong, or which are made of paper with very short fibers, or for UV-coated envelopes. In these envelopes, the pressure of the press tends to rupture on the outward curvature of the groove, rupturing the ink and making paper tears visible. For such envelopes, it is advantageous if the groove serving as the back edge is curved inward. In the previously known scoring a change in the curvature of the grooves is possible only by a manual change of scoring tools.
Für den Ein- und Ausbau von Rillwerkzeugen müssen die Wellen ausgebaut, bzw. umgebaut werden, was zeitintensiv ist und somit die Umstellzeit wesentlich verlängert. Ebenso ist für die Behebung eines Papierstaus die Zugänglichkeit zwischen den Rillwerkzeugen und Förderrollen sehr eingeschränkt und der dazu benötigte Zeitbedarf relativ hoch.For the installation and removal of scoring tools, the shafts must be removed or rebuilt, which is time-consuming and thus significantly extends the changeover time. Likewise, the accessibility between the creasing tools and conveyor rollers is very limited for the correction of a paper jam and the time required for this relatively high.
Die
Die
Aus der
Aufgabe der Erfindung ist es, gattungsgemässe Verfahren zum Einbringen von mehreren Rillen in Druckbogen oder in Bahnen eines Bedruckstoffes bereitzustellen, die eine einfache und schnelle Umstellung der jeweiligen Rillenformen ermöglichen.The object of the invention is to provide generic methods for introducing a plurality of grooves in printing sheets or in webs of a printing material, which allow a simple and fast conversion of the respective groove shapes.
Erfindungsgemäss wird diese Aufgabe durch ein Verfahren gelöst, bei der zumindest eines der Werkzeugpaare einer Rillvorrichtung gemeinsam mit seinen Wellen und in einem ineinander eingreifenden Zustand seiner Rillwerkzeuge aus seiner Arbeitsposition in Richtung des anderen Werkzeugpaares und über dessen aktuelle Position hinaus bis zu einer einem nachfolgenden Arbeitsauftrag entsprechenden, neuen Arbeitsposition verschoben wird.According to the invention, this object is achieved by a method in which at least one of the pairs of tools of a scoring device together with its shafts and in an intermeshing state of its scoring tools from its working position in the direction of the other tool pair and beyond its current position is moved to a new work item corresponding to a subsequent work order.
Zum zusätzlichen Anpassen des Abstands der Rillenpaare an einen weiteren unterschiedlichen Arbeitsauftrag wird ein erstes Werkzeugpaar in einer ersten Arbeitsposition festgelegt und ein zweites Werkzeugpaar in eine von der ersten Arbeitsposition sowie von dem weiteren Arbeitsauftrag abhängigen zweiten Arbeitsposition verschoben. Das erste oder das zweite Werkzeugpaar kann dadurch in einer sogenannten Fixkantenstellung und das andere Werkzeugpaar in einer buchdickenabhängigen Stellung positioniert werden. Diese Weiterbildung des Verfahrens bietet den Vorteil, dass bei nacheinander folgenden Arbeitsaufträgen, die lediglich geringe Veränderungen des Abstands der Rillenpaare erfordern, eine Umstellung der Werkzeugpaare noch schneller erfolgen kann.For additional adjustment of the spacing of the groove pairs to a further different work order, a first tool pair is fixed in a first working position and a second tool pair is displaced into a second working position dependent on the first working position and on the further work order. The first or the second tool pair can thereby be positioned in a so-called fixed edge position and the other tool pair in a book thickness-dependent position. This development of the method offers the advantage that in successive work orders that require only small changes in the spacing of the groove pairs, a change of the tool pairs can be done even faster.
In einer weiteren Ausführungsform der Erfindung kann eine gemeinsame Halterung eines ersten Werkzeugpaares gemeinsam mit den Wellen und den Rillwerkzeugen und/oder eine gemeinsame Halterung eines zweiten Werkzeugpaares gemeinsam mit den Wellen und den Rillwerkzeugen verschoben werden. Diese Weiterbildung ermöglicht es mehrere Wellen gemeinsam zu verschieben, was durch eine einfache Vorrichtung realisiert werden kann und wobei die Positionierung der Rillwerkzeuge ohne relative Abweichungen zueinander erfolgt.In a further embodiment of the invention, a common mounting of a first pair of tools together with the shafts and the scoring tools and / or a common mounting of a second pair of tools can be moved together with the shafts and the scoring tools. This development makes it possible to move several waves together, which can be realized by a simple device and wherein the positioning of the scoring tools takes place without relative deviations from each other.
Wenn darüber hinaus die Halterungen der Wellen über Stellantriebe verschoben werden, kann dies vorteilhaft zu einer Erleichterung der Bedienbarkeit führen. Wenn zusätzlich eine Steuerung vorgesehen ist, welche zur Verstellung der Werkzeugpaare Steuersignale an die Stellantriebe sendet, führt dies zu einem höheren Automatisierungsgrad und erfordert demzufolge weniger manuelle Eingriffe eines Bedieners.In addition, if the brackets of the shafts are displaced via actuators, this can advantageously lead to a simplification of the operability. In addition, if a controller is provided, which sends control signals to the actuators for adjusting the pairs of tools, this leads to a higher degree of automation and consequently requires less manual intervention by an operator.
Dadurch dass ein Arbeitsauftrag eine Rillung je eines Umschlags mit den beiden voneinander beabstandeten Rillenpaaren für die Herstellung je eines Buchblocks vorgesehen ist, kann die Rillvorrichtung den Anforderungen vorteilhaft für die Verarbeitung jedes herzustellenden Buchblocks entsprechend angepasst werden.The fact that a work order a grooving each envelope is provided with the two spaced pairs of grooves for the preparation of each book block, the scoring device can be adapted to the requirements advantageous for the processing of each book block to be produced accordingly.
Nachstehend wird die Erfindung unter Bezugnahme auf die Figuren, auf die hinsichtlich aller erfindungswesentlichen und in der Beschreibung nicht näher herausgestellten Einzelheiten ausdrücklich Bezug genommen wird, erläutert. Alle für das unmittelbare Verständnis der Erfindung nicht wesentlichen Elemente sind weggelassen worden. Gleiche Elemente sind in den einzelnen Figuren mit den gleichen Bezugszeichen versehen. In der Zeichnung zeigt:
- Fig. 1
- eine Ansicht einer Rillvorrichtung, mit in einer ersten Arbeitsposition befindlichen Rillwerkzeugen,
- Fig. 1a
- einen vergrösserten Ausschnitt der Rillvorrichtung gemäss
Fig. 1 , im Bereich der Rillwerkzeuge, - Fig. 1b
- einen Buchblock mit einem mit der Rillvorrichtung gemäss
Fig. 1 hergestellten Umschlag, - Fig. 2
- eine Ansicht der Rillvorrichtung gemäss
Fig. 1 , jedoch mit in einer zweiten Arbeitsposition befindlichen Rillwerkzeugen, - Fig. 2a
- einen vergrösserten Ausschnitt der Rillvorrichtung gemäss
Fig. 2 , im Bereich der Rillwerkzeuge, - Fig. 2b
- einen Buchblock mit einem mit der Rillvorrichtung gemäss
Fig. 2 hergestellten Umschlag, und - Fig. 3
- eine Ansicht der Lagerung der Wellen mit den Rillwerkzeugen in der Rillvorrichtung gemäss
Fig. 1 .
- Fig. 1
- a view of a creasing device, with scoring tools located in a first working position,
- Fig. 1a
- an enlarged section of the scoring device according to
Fig. 1 in the field of scoring tools, - Fig. 1b
- a book block with a with the creasing according to
Fig. 1 manufactured envelope, - Fig. 2
- a view of the creasing according to
Fig. 1 but with scoring tools in a second working position, - Fig. 2a
- an enlarged section of the scoring device according to
Fig. 2 in the field of scoring tools, - Fig. 2b
- a book block with a with the creasing according to
Fig. 2 manufactured envelope, and - Fig. 3
- a view of the storage of the waves with the scoring tools in the scoring device according to
Fig. 1 ,
In
Die Bezeichnungen "vordere" und "hintere" Werkzeugpaare 41, 42 beziehen sich auf die Darstellung gemäss
Die Halterungen 7, 8 sind gegenüber dem Gestell 11 über je einen am Gestell 11 angeordneten Stellantrieb 9, 10 seitlich verschiebbar angeordnet. Dadurch können die in den Halterungen 7, 8 aufgenommenen Wellen 20, 21; 30, 31 und damit die Rillwerkzeuge 3, 4; 5, 6 in Axialrichtung der Wellen 20, 21; 30, 31 und somit quer zu einer Förderrichtung F von mit der Rillvorrichtung 1 zu rillenden Druckbogen 2 verschoben werden. Eine Steuerung 75 ist, wie in
Die Wellen 20, 21; 30, 31 sind, wie in
Wie in den
Die Rillwerkzeuge 3, 4; 5, 6 weisen jeweils eine Erhebung 17 und eine davon beabstandete Vertiefung 18 rings um ihren zylindrischen Grundkörper auf. Die Erhebungen 17 und die Vertiefungen 18 sind auf den gegenüberliegenden Rillwerkzeugen 3, 4; 5, 6 eines Werkzeugpaares 41, 42 spiegelsymmetrisch zu einer gedachten Mittelebene 70 der Werkzeugpaare 41, 42 und komplementär angeordnet, d.h. jede Erhebung 17 passt in je eine Vertiefung 18 des gegenüberliegenden Rillwerkzeugs 3, 4; 5, 6.The
In
In
Zum Einbringen von mehreren voneinander beabstandeten Rillenpaaren 61, 62 in Druckbogen 2 oder in Bahnen eines Bedruckstoffes werden die Druckbogen 2 oder Bahnen der Rillvorrichtung 1 zunächst in einer Förderrichtung F, in einem seriellen Strom zugeführt, wie in den
Mit den Stellantrieben 9, 10 werden die Halterungen 7, 8 und damit die Rillwerkzeuge 3, 4; 5, 6 quer zur Förderrichtung F der Druckbogen 2 oder Bahnen des Bedruckstoffes verschoben, um entweder eine Anpassung der Rillenpaare 61, 62, insbesondere der als Rückenkanten dienenden Rillen, an die Dicke des Buchblocks 100 oder einen kompletten Wechsel der Produktion für die Herstellung von Umschlägen 101 gemäss
Gleichzeitig wird das ebenfalls rotierend angetriebene zweiten Werkzeugpaar 42 der Rillwerkzeuge 5, 6 durch Verstellen der Halterung 8 über den Antrieb 10 bezüglich der Förderrichtung F nach links verschoben. Dieser Vorgang erfolgt gleichfalls paarweise, jeweils in einem ineinander eingreifenden Zustand der Rillwerkzeuge 4, 5 des zweiten Werkzeugpaares 42, wobei dessen Wellen 30, 31 durch Verstellen der Halterung 8 entlang ihrer Achse und kraftschlüssig entlang des Antriebsrads 16 verschoben werden. Dabei wird zumindest eines der Werkzeugpaare 41, 42 gemeinsam mit seinen Wellen 20, 21; 30, 31 und in einem ineinander eingreifenden Zustand seiner Rillwerkzeuge 3, 4; 5, 6 aus seiner Arbeitsposition 55, 56 in Richtung des anderen Werkzeugpaares 42, 41 und über dessen aktuelle Position hinaus bis zu einer einem nachfolgenden Arbeitsauftrag entsprechenden, neuen Arbeitsposition 57, 58 verschoben.At the same time, the likewise rotatably driven second pair of
Der Antrieb der Rillvorrichtung 1 erfolgt durch das Antriebsrad 12, das mit dem Hauptantrieb des Klebebinders über ein Getriebe oder über eine elektrische Welle , oder mit einem separaten Antrieb verbunden ist. Die Kraftübertragung vom Antriebsrad 12 erfolgt über ein aus dessen verlängertem Zahnkranz 16 und den mit diesem formschlüssig verbundenen Antriebsrädern 15 der Wellen 20, 21; 30, 31 gebildeten Zahnradgetriebe 19, das eine permanente Kraftübertragung gewährleistet.The drive of the creasing device 1 is effected by the
Die Stellantriebe 9, 10 werden in einer ersten Bearbeitungsposition 51, die einer Normalstellung entspricht, gemäss
Die Stellantriebe 9, 10 werden in einer zweiten Arbeitsposition 52 gemäss
Eine Demontage der Rillwerkzeuge 5, 6 kann bei Betrachtung von
Der Niederhalter ist Bestandteil der Funktion des Verschlussmechanismus. Mit dem Verschlussmechanismus wird die obere Welle in die oberen Halblagerschalen der Halterung gedrückt. Das Lager drückt dabei gleichzeitig auf den Niederhalter welcher über den gefederten Stift die untere Welle in die unteren Halblagerschalen der Halterung drückt.The hold-down is part of the function of the locking mechanism. The locking mechanism pushes the upper shaft into the upper half bearing shells of the bracket. At the same time, the bearing presses on the hold-down device which presses the lower shaft into the lower half-bearing shells of the holder via the spring-loaded pin.
Die
Claims (6)
- Method of introducing two pairs of creases (61, 62) disposed at a distance from one another into printed sheets (2) or into webs of a printing material transported by a creasing device (1) in a conveying direction (F) of the creasing device (1) and into which the pairs of creases (61, 62) are introduced by means of creasing tools (3, 4; 5, 6) cooperating in pairs, each arranged on a shaft (20, 21; 30, 31) and driven in rotation at least by one shaft (20, 21; 30, 31), wherein the creasing tools (3, 4; 5, 6) form two tool pairs (41, 42) each arranged in a working position (55, 56) disposed at a distance from one another in accordance with a work order, wherein each creasing tool (3, 4; 5, 6) has a protuberance (17) and a depression (18), wherein the protuberances (17) and depressions (18) of the creasing tools (3, 4; 5, 6) of one tool pair (41, 42) are designed to be complementary to one another and wherein the protuberances (17) and depressions (18) of the tool pairs (41, 42) are arranged in mirror symmetry relative to an imaginary centre plane (70) of the tool pairs (41, 42),
characterised in that
at least one of the tool pairs (41, 42), together with its shafts (20, 21; 30, 31) and with its creasing tools (3, 4; 5, 6) in a meshing state, is moved from its working position (55, 56) in the direction of the other tool pair (42, 41) and beyond the current position thereof to a new working position (57, 58) corresponding to a subsequent work order. - Method according to claim 1, characterised in that, in order to further adapt the spacing of the pairs of creases (61, 62) to another different work order, a first tool pair (41, 42) is fixed in a first working position (55) and a second tool pair (41, 42) is moved into a second working position (58) dependent on its first working position (56) and on the further work order.
- Method according to either of claims 1 or 2, characterised in that a joint holder (7) of a first tool pair (41) is moved together with the shafts (20, 21) and the creasing tools (3, 4) and/or a joint holder (8) of a second tool pair (42) is moved together with the shafts (30, 31) and the creasing tools (5, 6).
- Method according to claim 3, characterised in that the holders (7, 8) of the shafts (20, 21; 30, 31) are moved via actuators (9, 10).
- Method according to claim 4, characterised by a controller (75) that sends control signals to the actuators (9, 10) in order to adjust the tool pairs (41, 42).
- Method according to one of claims 1 to 5, characterised in that a work order includes creasing a cover (101) with the two pairs of creases (61, 62) disposed at a distance from one another for the production of a book block (100).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CH27982012 | 2012-12-14 |
Publications (2)
Publication Number | Publication Date |
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EP2743072A1 EP2743072A1 (en) | 2014-06-18 |
EP2743072B1 true EP2743072B1 (en) | 2018-09-05 |
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EP13196601.2A Active EP2743072B1 (en) | 2012-12-14 | 2013-12-11 | Creasing method |
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CN108001767A (en) * | 2017-12-25 | 2018-05-08 | 佛山市锦智能装备有限公司 | Film packaging rolls impression device |
DE102022108015A1 (en) * | 2022-04-04 | 2023-10-05 | Weber Maschinenbau Gmbh Breidenbach | Device for cutting food packaging, system with a cutting knife and a cutting knife holder, method for converting the device and method for changing a distance between two cutting knives |
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DE1511033B1 (en) * | 1963-03-21 | 1969-09-25 | Windmoeller & Hoelscher | Creasing device for pre-creasing fold lines in bag machines |
US6364590B1 (en) * | 2000-08-01 | 2002-04-02 | Hewlett-Packard Company | Book cover preparation system |
DE102007049636A1 (en) * | 2007-10-17 | 2009-04-23 | Kolbus Gmbh & Co. Kg | Device for rotationally grooving sheet-like printed products |
US8128331B2 (en) * | 2008-07-15 | 2012-03-06 | R.R. Donnelley & Sons Company | Methods and apparatus to score book covers |
DE102008060073A1 (en) * | 2008-12-02 | 2010-06-10 | Dgr-Graphic Gmbh | Method for creasing envelope with production of brochures in adhesive binder, involves producing strokes in mechanical, pneumatic or hydraulic manner |
IT1394812B1 (en) * | 2009-07-13 | 2012-07-13 | Panotec Srl | MACHINE FOR CUTTING AND / OR CORDONING A RELATIVELY RIGID MATERIAL, SUCH AS EXAMPLE CARDBOARD, CUTTING GROUP AND / OR CORDONATURE AND ITS CUTTING AND / OR CORDONATURE PROCEDURE |
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