EP0676303B1 - Device for mechanically backing book blocks - Google Patents

Device for mechanically backing book blocks Download PDF

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Publication number
EP0676303B1
EP0676303B1 EP95101536A EP95101536A EP0676303B1 EP 0676303 B1 EP0676303 B1 EP 0676303B1 EP 95101536 A EP95101536 A EP 95101536A EP 95101536 A EP95101536 A EP 95101536A EP 0676303 B1 EP0676303 B1 EP 0676303B1
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EP
European Patent Office
Prior art keywords
pressing beam
book block
pressing
load
movement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP95101536A
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German (de)
French (fr)
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EP0676303A1 (en
Inventor
Kurt Begemann
Horst Rathert
Manfred Albrecht
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Kolbus GmbH and Co KG
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Kolbus GmbH and Co KG
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Publication of EP0676303A1 publication Critical patent/EP0676303A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42C—BOOKBINDING
    • B42C5/00—Preparing the edges or backs of leaves or signatures for binding
    • B42C5/02—Preparing the edges or backs of leaves or signatures for binding by rounding or backing

Definitions

  • the invention relates to a device for the mechanical pressing of clamped, rounded book blocks by means of a concave active surface having a press beam which acts on the back of the book block with a pressing force, a bearing with a supporting part accommodating the press beam being used, which alternately via drive means on an arch path one and the other side of the book block spine is pivotable for folding the printed sheets in the side areas of the book block spine.
  • the pressing operation gives the rounded book block the desired back shape which corresponds to the type of cover, which is determined by a fold provided in the area of the book block near the back, which can be designed either as a deep or as an oblique fold.
  • book rounding and pressing machines are used in industrial book production, in which the pressing process following the book spine rounding process is carried out by a shaped piece which moves back and forth over the entire width of the back, whereby the folded printed sheets are applied by the pressure and friction
  • the middle of the spine of the book block must be folded over on both sides, at an angle that increases towards the outside. This gives the book block its mushroom-like back shape as well as its back stabilization.
  • a book rounding and pressing machine with a piece which acts on the back of the book block and moves back and forth is shown and described, for example, in DE-OS 15 36 507.
  • the traditional round shape of the spine has a multitude of radii.
  • this desired back shape shaped pieces adapted to the respective back radius must be used during the pressing process.
  • An adaptation of the fittings to the respective back radius can only be made possible to a limited extent due to the large number of different radii with regard to storage and in particular the high changeover times. If there is a greater deviation between the shaped piece with its concave active surface and the back radius, there is a low bending stiffness in the case of printed sheets and in the case of book blocks which are not glued behind, i.e. H.
  • the object of the invention is to provide a device of the generic type for machine pressing of rounded book blocks, with which a quality improvement can be achieved.
  • the pressing device is formed by two arms of a bearing 3 which are arranged at a distance from one another and on which, as can be seen from FIGS. 1 and 2, freely rotatable rollers 4a are mounted which have a path of movement 4 for the arms of the bearing 3 connecting bridge 5 result.
  • the bridge 5 has arch paths 5a corresponding to the movement path 4 and carries a so-called press beam 6 with a concave active surface 6a which is approximately matched to the back shape of a book block.
  • the bridge 5 with the press beam 6 is alternately pivoted from the main drive via an articulated drive rod 7 on the movement path 4 from the center of the book block back to one and the other side of the book block back.
  • the pivot point of the press beam 6 is in its point of contact with the back of the book block.
  • the press bar 6 acts for upsetting the printed sheets in the area of the middle of the book block via drive means, not shown, under a defined pressing force on the rounded book block back 1, which is held by jaws 8 in its area near the back.
  • a tangential sliding movement superimposed on the pivoting movement on the printed sheets is generated by the bearing executing a defined laterally controlling movement.
  • a coupling rod 9 acts on the bearing 3, which moves the bearing 3 alternately according to the direction of the arrow to the right and left sides by the dimension x or x 'by a rotatingly driven control cam 10 via a pivotably mounted drive arm 11 with control roller 12.
  • the sliding path x or x takes into account the lengthening of the spine of the book block during the pressing process.
  • the protrusion of the press bar 6 with respect to the book block 1 remains constant, there is no relative movement between the book block 1 and the press bar 6.
  • the sliding movement superimposed on the pivoting movement can be changed by changing the position of the articulation point of the coupling rod 9 in the drive arm 11 by means of adjusting elements in the form of an elongated hole 13, a sliding block 14 and a clamping screw 15 according to the desired book block back shape depending on the book block thickness, the shape of the press beam effective surface 6a and the position of the press beam pivot.
  • the return stroke of the press beam 6 takes place on the same movement path, but advantageously the press beam 6 executes a slight vertical movement for the return stroke movement, which goes back to zero up to the middle position.
  • the pivot point "M" of the press beam is adjusted somewhat above the spine of the book block.
  • the size of the sliding stroke "Z” can be determined by the lever 16, the lever arm length of which can be changed by moving the articulation point via adjusting means 16a, 17a.
  • the return stroke of the press beam 6 again takes place along the same movement path, advantageously after a slight vertical movement has been carried out.
  • the bearing point 18 can also make a release movement on the return stroke up to the middle position.
  • the bearing 3 with the bridge 5 carrying the press beam 6 is alternately guided in an arcuate manner by the bearing 3 carrying rollers 21 lying on an arcuate track, which do not have one in track segments 22 shown support frame are guided.
  • a radial adjustment of the track segments 22 and rollers 21 is required.
  • the press bar 6 is moved freely tangentially via the drive rod 7 and a press force is generated on the back of the book block via drive means (not shown).
  • the radius of the web segments 22 and the radius of the press beam effective surface 6a are located on the same center point below the pivot point of the press beam 6, which is approximately on the point of contact between the book block spine and the press beam.
  • a third embodiment variant shows a construction shown in FIGS. 9 and 10, in which the bearing 3 with the bridge 5 and the press beam 6 can be moved in height between fixed lateral guides 27 and the press beam 6 via a drive force (not shown) under a defined pressing force on the rounded book block 1 , which is held by jaws 8 in the back area is, acts.
  • the fulcrum of the press beam 6 is located at a defined distance below its point of contact with the back of the book block 1, since there is no lateral evasion of the bearing.
  • the press beam 6 is mounted concentrically and freely tangentially on rollers 30 in an intermediate carrier 28 of the supporting part 5 and is brought into contact with side stops 32 of the intermediate carrier 28 during the pivoting movement.
  • Compression springs 31 are provided for centering the pressure beam 6 in the intermediate carrier 28, by means of which the pressure beam 6 is supported laterally on the intermediate carrier 28.
  • the pressure beam 6 moves tangentially, with the stop screws 32 in the intermediate carrier 28 limiting the displacement and thus initiating the sliding movement for folding the printed sheets in the side areas of the book block spine.
  • the size of the displacement stroke can be adjusted by changing the distance between the pivot point of the press beam 6 and the back of the book block and via the stop screws 32.
  • the pressing unit is supported laterally against the action of plate spring assemblies 35 during the pressing process, as a result of which a pressing force for folding over the printing sheet of the book block 1 is applied in the side areas of the spine.
  • the fulcrum of the press beam 6 is at its point of contact with the spine of the book block.
  • the press beam 6 it is proposed to cancel the effect of the plate spring assembly 35 during the return stroke of the press beam 6 to the center of the book block, in order to prevent entrainment of the outer printed sheets folded over to the sides.
  • the movement of the press beam 6 can also be controlled in such a way that it is released during its return stroke from the back of the book block by an upward movement.
  • tappets 36 controlled via cam disks 37 are provided which act alternately on the bearing 3 and transfer the plate spring assemblies 35 from a support position for applying a pressing force into a relief position.
  • the plate spring assembly 35 is supported on the one hand on a stop collar 38 of the plunger 36 and on the other hand on a sliding sleeve 39 guided on the plunger 36 with a control roller 40 which is operatively connected to the rotatingly driven cam disk 37.
  • Ram 36 and sliding sleeve 39 are slidably guided in bearings 41 and 42.
  • the press beam 6 is in a lowered position to the side of a rounded book block 1 held between the clamping jaws 8 before the start of the press beam movement.
  • the tappets 36 on both sides are held in contact with the bearing 3.
  • FIG. 12 shows the press beam 6 after a sideways movement and thus after the pressing process has been carried out, the bearing 3 being supported laterally against the action of the plate spring assembly 35 by means of the tappet control and thus by means of the spring element a pressing force for folding the printing sheets of the book block 1 in the side areas of the back is applied.
  • working cylinders 43 are used instead of the tappet control and plate spring assemblies, by means of which the bearing 3 can be controlled alternately from a support position to a relief position.
  • the active surface can also be convex or straight.

Description

Die Erfindung betrifft eine Vorrichtung zum maschinellen Abpressen von eingespannt gehaltenen gerundeten Buchblocks mittels eines eine konkave Wirkfläche aufweisenden Preßbalkens, der auf den Buchblockrücken mit einer Preßkraft einwirkt, wobei ein Lager mit einem den Preßbalken aufnehmenden Tragteil Verwendung findet, das über Antriebsmittel auf einer Bogenbahn abwechselnd zu der einen und anderen Seite des Buchblockrückens zum Umlegen der Druckbogen in den Seitenbereichen des Buchblockrückens schwenkbar ist.The invention relates to a device for the mechanical pressing of clamped, rounded book blocks by means of a concave active surface having a press beam which acts on the back of the book block with a pressing force, a bearing with a supporting part accommodating the press beam being used, which alternately via drive means on an arch path one and the other side of the book block spine is pivotable for folding the printed sheets in the side areas of the book block spine.

Durch den Arbeitsgang Abpressen wird dem gerundeten Buchblock die gewünschte und der Einbandart entsprechende Rückenform verliehen, die von einem im rückennahen Bereich des Buchblocks vorgesehenen Falz bestimmt wird, wobei dieser entweder als tiefer oder als schräger Falz ausgebildet sein kann.The pressing operation gives the rounded book block the desired back shape which corresponds to the type of cover, which is determined by a fold provided in the area of the book block near the back, which can be designed either as a deep or as an oblique fold.

Zur Durchführung des Arbeitsgangs Abpressen finden in der industriellen Buchfertigung Buchrunde- und Abpreßmaschinen Verwendung, in denen der dem Buchrückenrundevorgang folgende Abpreßvorgang von einem sich über die gesamte Rückenbreite hin- und herbewegenden Formstück ausgeführt wird, wodurch unter Anwendung von Druck und Reibung die gefalzten Druckbogen von der Mitte des Buchblockrückens nach beiden Seiten hin umgelegt werden, und zwar unter einem nach außen hin zunehmenden Winkel. Somit erhält der Buchblock seine pilzartige Rückenform sowie gleichzeitig seine Rückenstabilisierung.To carry out the pressing operation, book rounding and pressing machines are used in industrial book production, in which the pressing process following the book spine rounding process is carried out by a shaped piece which moves back and forth over the entire width of the back, whereby the folded printed sheets are applied by the pressure and friction The middle of the spine of the book block must be folded over on both sides, at an angle that increases towards the outside. This gives the book block its mushroom-like back shape as well as its back stabilization.

Eine Buchrunde- und Abpreßmaschine mit einem auf den Buchblockrücken einwirkenden, sich hin- und herbewegenden Formstück ist beispielsweise in der DE-OS 15 36 507 dargestellt und beschrieben.A book rounding and pressing machine with a piece which acts on the back of the book block and moves back and forth is shown and described, for example, in DE-OS 15 36 507.

Bekanntlich weist die traditionelle Rundeform des Buchrückens eine Vielzahl von Radien auf. Um den Büchern bzw. Buchblocks diese gewünschte Rückenform zu geben, müssen beim Abpreßvorgang dem jeweiligen Rückenradius angepaßte Formstücke eingesetzt werden. Ein Anpassen der Formstücke an den jeweiligen Rückenradius läßt sich aufgrund der Vielzahl unterschiedlicher Radien im Hinblick auf die Lagerhaltung und insbesondere auf die hohen Umrichtzeiten nur in einem begrenzten Rahmen ermöglichen. Bei stärkerer Abweichung zwischen dem Formstück mit seiner konkaven Wirkfläche und dem Rückenradius besteht bei Druckbogen mit geringer Biegesteifigkeit und bei nicht hinterklebten Buchblocks, d. h. bei lediglich beleimten, einen hohen Reibwert aufweisenden Blocks, die Gefahr, daß bei der Rückbewegung des Formstückes ein Mitreißen der nach den Seiten hin umgelegten äußeren Druckbogen eintritt, was zum Einknicken der Druckbogen führen kann und somit zu einer Beeinträchtigung der Abpreßqualität des Buchblocks.As is well known, the traditional round shape of the spine has a multitude of radii. In order to give the books or book blocks this desired back shape, shaped pieces adapted to the respective back radius must be used during the pressing process. An adaptation of the fittings to the respective back radius can only be made possible to a limited extent due to the large number of different radii with regard to storage and in particular the high changeover times. If there is a greater deviation between the shaped piece with its concave active surface and the back radius, there is a low bending stiffness in the case of printed sheets and in the case of book blocks which are not glued behind, i.e. H. in the case of only glued blocks with a high coefficient of friction, there is the risk that, when the shaped part moves back, the outer printed sheets folded over to the side will be entrained, which can lead to the printed sheets buckling and thus impairing the pressing quality of the book block.

Die Aufgabe der Erfindung besteht darin, eine Vorrichtung der gattungs gemäßen Art zum maschinellen Abpressen von gerundeten Buchblocks zu schaffen, mit der sich eine Qualitätsverbesserung erzielen läßt.The object of the invention is to provide a device of the generic type for machine pressing of rounded book blocks, with which a quality improvement can be achieved.

Die Aufgabe wird erfindungsgemäß durch den kennzeichnenden Teil des Anspruchs 1 gelöst. Weitere vorteilhafte Ausführungsvarianten sowie Ausgestaltungen ergeben sich aus den Unteransprüchen.The object is achieved by the characterizing part of claim 1. Further advantageous design variants and configurations result from the subclaims.

Die Erfindung wird nachfolgend anhand von Ausführungsbeispielen näher erläutert, die in den Zeichnungen schematisch dargestellt sind. Es zeigen:

Fig. 1-13
die Abpreßvorrichtung in verschiedenen Ausführungsvarianten.
The invention is explained in more detail below on the basis of exemplary embodiments which are illustrated schematically in the drawings. Show it:
Fig. 1-13
the squeezing device in different versions.

In an sich bekannter Weise wird die Abpreßvorrichtung von zwei abständig zueinander angeordneten Auslegern eines Lagers 3 gebildet, an denen wie aus den Figuren 1 und 2 ersichtlich im Bogen verlaufende frei drehbare Rollen 4a gelagert sind, die eine Bewegungsbahn 4 für eine die Ausleger des Lagers 3 miteinander verbindende Brücke 5 ergeben. Der Bewegungsbahn 4 entsprechend verlaufend weist die Brücke 5 Bogenbahnen 5a auf und trägt einen sogenannten Preßbalken 6 mit einer konkaven, der Rückenform eines Buchblocks annähernd angepaßten Wirkfläche 6a. Die Brücke 5 mit dem Preßbalken 6 wird vom Hauptantrieb aus über eine gelenkig angreifende Antriebsstange 7 auf der Bewegungsbahn 4 von der Buchblockrückenmitte aus abwechselnd zu der einen und anderen Seite des Buchblockrückens verschwenkt. Dabei befindet sich der Drehpunkt des Preßbalkens 6 in seinem Berührungspunkt mit dem Buchblockrücken.In a manner known per se, the pressing device is formed by two arms of a bearing 3 which are arranged at a distance from one another and on which, as can be seen from FIGS. 1 and 2, freely rotatable rollers 4a are mounted which have a path of movement 4 for the arms of the bearing 3 connecting bridge 5 result. The bridge 5 has arch paths 5a corresponding to the movement path 4 and carries a so-called press beam 6 with a concave active surface 6a which is approximately matched to the back shape of a book block. The bridge 5 with the press beam 6 is alternately pivoted from the main drive via an articulated drive rod 7 on the movement path 4 from the center of the book block back to one and the other side of the book block back. The pivot point of the press beam 6 is in its point of contact with the back of the book block.

Gemäß Pfeilrichtung wirkt der Preßbalken 6 zum Stauchen der Druckbogen im Bereich der Buchblockrückenmitte über nicht dargestellte Antriebsmittel unter einer definierten Preßkraft auf den gerundeten Buchblockrücken 1, der von Klemmbacken 8 in seinem rückennahen Bereich gehalten ist.According to the direction of the arrow, the press bar 6 acts for upsetting the printed sheets in the area of the middle of the book block via drive means, not shown, under a defined pressing force on the rounded book block back 1, which is held by jaws 8 in its area near the back.

Zum Umlegen der Druckbogen in den Seitenbereichen des Buchblockrückens wird erfindungsgemäß eine der Schwenkbewegung überlagerte tangentiale Schiebebewegung auf die Druckbogen erzeugt, indem das Lager eine definiert seitwärts steuernde Bewegung ausgeführt. Hierzu greift am Lager 3 eine Koppelstange 9 an, die von einer umlaufend angetriebenen Steuerkurve 10 über einen schwenkbar gelagerten Antriebsarm 11 mit Steuerrolle 12 das Lager 3 abwechselnd gemäß Pfeilrichtung zur rechten und linken Seite um das Maß x bzw. x' bewegt.To fold the printed sheets in the side areas of the book block spine, according to the invention a tangential sliding movement superimposed on the pivoting movement on the printed sheets is generated by the bearing executing a defined laterally controlling movement. For this purpose, a coupling rod 9 acts on the bearing 3, which moves the bearing 3 alternately according to the direction of the arrow to the right and left sides by the dimension x or x 'by a rotatingly driven control cam 10 via a pivotably mounted drive arm 11 with control roller 12.

Der Schiebeweg x bzw. x' berücksichtigt die Verlängerung des Buchblockrückens beim Abpreßvorgang. Der Überstand des Preßbalkens 6 bezogen auf den Buchblock 1 bleibt konstant, zwischen Buchblock 1 und Preßbalken 6 entsteht keine Relativbewegung.The sliding path x or x 'takes into account the lengthening of the spine of the book block during the pressing process. The protrusion of the press bar 6 with respect to the book block 1 remains constant, there is no relative movement between the book block 1 and the press bar 6.

Die der Schwenkbewegung überlagerte Schiebebewegung läßt sich über eine Positionsveränderung des Anlenkpunktes der Koppelstange 9 im Antriebsarm 11 mittels Stellelemente in Form eines Langloches 13, eines Kulissensteines 14 und einer Klemmschraube 15 entsprechend der gewünschten Buchblockrückenform in Abhängigkeit von der Buchblockdicke, Form der Preßbalkenwirkfläche 6a sowie der Position des Preßbalkendrehpunktes variieren.The sliding movement superimposed on the pivoting movement can be changed by changing the position of the articulation point of the coupling rod 9 in the drive arm 11 by means of adjusting elements in the form of an elongated hole 13, a sliding block 14 and a clamping screw 15 according to the desired book block back shape depending on the book block thickness, the shape of the press beam effective surface 6a and the position of the press beam pivot.

Der Rückhub des Preßbalkens 6 erfolgt auf der gleichen Bewegungsbahn, vorteilhafterweise jedoch führt der Preßbalken 6 für die Rückhubbewegung eine geringfügige Vertikalbewegung aus, die bis zur Mittelstellung wieder auf Null zurückgeht.The return stroke of the press beam 6 takes place on the same movement path, but advantageously the press beam 6 executes a slight vertical movement for the return stroke movement, which goes back to zero up to the middle position.

In einer zur ersten Ausführungsvariante einer Abpreßvorrichtung abgewandelten Konstruktion läßt sich gemäß Figuren 3, 3a und 4 die der Schwenkbewegung des Preßbalkens 6 überlagerte tangentiale Schiebebewegung auf die Druckbogen in den Seitenbereichen des Buchblockrückens durch eine an einem Hebelarm 16 unterhalb eines fiktiven Drehpunktes des Preßbalkens 6 angreifende Koppelstange 17 erreichen, die sich während der Schwenkbewegung an einem ortsfesten Lager 18 abstützt. Dabei kann der Hebelarm 16 von einem Ausleger des den Preßbalken 6 aufnehmenden Tragteiles 5 gebildet sein.3, 3a and 4, the tangential sliding movement superimposed on the pivoting movement of the press beam 6 on the printed sheets in the side areas of the book block spine by a coupling rod engaging on a lever arm 16 below a fictitious pivot point of the press beam 6 Reach 17, which is supported on a fixed bearing 18 during the pivoting movement. The lever arm 16 can be formed by a cantilever of the support member 5 receiving the press beam 6.

Um zu Beginn der Schwenkbewegung eine Schiebebewegung auf den Buchblockrücken zu vermeiden, wird der Drehpunkt "M" des Preßbalkens etwas oberhalb des Buchblockrückens justiert. Die Größe des Schiebehubes "Z" läßt sich durch den Hebel 16 bestimmen, dessen Hebelarmlänge durch Verlegung des Anlenkpunktes über Stellmittel 16a, 17a veränderbar ist. Der Rückhub des Preßbalkens 6 erfolgt wiederum entlang der gleichen Bewegungsbahn, vorteilhafterweise nach Ausführung einer geringen Vertikalbewegung. Alternativ dazu kann auch der Lagerpunkt 18 beim Rückhub bis zur Mittelstellung eine Lüftbewegung machen.In order to avoid a sliding movement on the spine of the book block at the beginning of the swiveling movement, the pivot point "M" of the press beam is adjusted somewhat above the spine of the book block. The size of the sliding stroke "Z" can be determined by the lever 16, the lever arm length of which can be changed by moving the articulation point via adjusting means 16a, 17a. The return stroke of the press beam 6 again takes place along the same movement path, advantageously after a slight vertical movement has been carried out. As an alternative to this, the bearing point 18 can also make a release movement on the return stroke up to the middle position.

In einer weiteren abgewandelten Konstruktion zur ersten Ausführungsvariante kann gemäß Figur 5 und 6 die der Schwenkbewegung des Preßbalkens 6 überlagerte tangentiale Schiebebewegung auf die Druckbogen in den Seitenbereichen des Buchblockrückens über an der Brücke 5 an Auslegern 5b gelagerte, bei der Schwenkbewegung gegen Steuerbahnen 20 laufende Steuerrollen 19 ausgeführt werden, was zwangsläufig die Horizontalbewegung erzeugt.In a further modified construction to the first embodiment variant, the tangential sliding movement superimposed on the swiveling movement of the press beam 6 on the printed sheets in the side areas of the book block spine, supported on the bridge 5 on arms 5b and running during the swiveling movement against control tracks 20, can be carried out according to FIGS. 5 and 6 be executed, which inevitably produces the horizontal movement.

Durch einen Freiraum zwischen Steuerrolle 19 und Steuerbahn 20 erfolgt zunächst nur die Schwenkbewegung und nach Anlage der Rolle 19 an der Flanke der Bahn 20 zusätzlich die Schiebebewegung. Beim Rückhub des Preßbalkens 6 vollzieht sich zunächst nur die Rückschwenkbewegung bis zur Anlage der Steuerrolle 19 an der Flanke der gegenüberliegenden Steuerbahn 20, wodurch ein reibungsloser Rückhub ohne Vertikalbewegung möglich ist. Zur Positionshaltung des Lagers 3 stützt sich dieses an Federelementen 25 ab.Due to a free space between the control roller 19 and the control track 20, initially only the pivoting movement and, after the roll 19 has been placed on the flank of the track 20, there is also the sliding movement. During the return stroke of the press beam 6, initially only the pivoting back movement takes place until the control roller 19 abuts on the flank of the opposite control track 20, as a result of which a smooth return stroke is possible without vertical movement. To hold the bearing 3 in position, it is supported on spring elements 25.

Gemäß einer zweiten Ausführungsvariante in Figur 7 und 8 wird das Lager 3 mit der den Preßbalken 6 tragenden abwechselnd zu der einen und anderen Seite verschwenkbaren Brücke 5 bogenförmig geführt, indem das Lager 3 auf einer Bogenbahn liegende Rollen 21 trägt, die in Bahnsegmenten 22 eines nicht dargestellten Tragrahmens geführt sind. Im Hinblick auf unterschiedliche Radien der Preßbalkenwirkfläche 6a ist eine radiale Verstellung der Bahnsegmente 22 und Rollen 21 erforderlich. Über die Antriebsstange 7 wird der Preßbalken 6 frei tangential bewegt sowie über nicht dargestellte Antriebsmittel eine Preßkraft auf den Buchblockrücken erzeugt.According to a second embodiment variant in FIGS. 7 and 8, the bearing 3 with the bridge 5 carrying the press beam 6 is alternately guided in an arcuate manner by the bearing 3 carrying rollers 21 lying on an arcuate track, which do not have one in track segments 22 shown support frame are guided. With regard to different radii of the press beam effective surface 6a, a radial adjustment of the track segments 22 and rollers 21 is required. The press bar 6 is moved freely tangentially via the drive rod 7 and a press force is generated on the back of the book block via drive means (not shown).

Der Radius der Bahnsegmente 22 sowie der Radius der Preßbalkenwirkfläche 6a befinden sich auf demselben Mittelpunkt unterhalb des Drehpunktes des Preßbalkens 6, der annähernd auf dem Berührungspunkt zwischen Buchblockrücken und Preßbalken liegt.The radius of the web segments 22 and the radius of the press beam effective surface 6a are located on the same center point below the pivot point of the press beam 6, which is approximately on the point of contact between the book block spine and the press beam.

Infolge der durch Reibung des Preßbalkens 6 am Buchblockrücken des zwischen Klemmbacken 8 gehaltenen Buchblocks 1 entstehenden Tangentialkräfte ergibt sich eine der Schwenkbewegung überlagerte tangentiale Schiebebewegung des Preßbalkens 6 und bedingt dadurch ein Umlegen der Druckbogen in den Seitenbereichen des Buchblockrückens.As a result of the tangential forces resulting from the friction of the press bar 6 on the back of the book block of the book block 1 held between the clamping jaws 8, a tangential sliding movement of the press bar 6 is superimposed on the pivoting movement and thereby causes the printed sheets to be flipped over in the side areas of the book block back.

Eine dritte Ausführungsvariante zeigt eine in Figur 9 und 10 dargestellte Bauweise, in der das Lager 3 mit der Brücke 5 und dem Preßbalken 6 zwischen ortsfesten seitlichen Führungen 27 höhenverfahrbar ist und der Preßbalken 6 über nicht dargestellte Antriebsmittel unter einer definierten Preßkraft auf den gerundeten Buchblock 1, der von Klemmbacken 8 im rückennahen Bereich gehalten ist, einwirkt. Der Drehpunkt des Preßbalkens 6 befindet sich dabei in einem definierten Abstand unterhalb seines Berührungspunktes mit dem Rücken des Buchblocks 1, da ein seitliches Ausweichen des Lagers entfällt.A third embodiment variant shows a construction shown in FIGS. 9 and 10, in which the bearing 3 with the bridge 5 and the press beam 6 can be moved in height between fixed lateral guides 27 and the press beam 6 via a drive force (not shown) under a defined pressing force on the rounded book block 1 , which is held by jaws 8 in the back area is, acts. The fulcrum of the press beam 6 is located at a defined distance below its point of contact with the back of the book block 1, since there is no lateral evasion of the bearing.

Der Preßbalken 6 ist in einem Zwischenträger 28 des Tragteiles 5 konzentrisch und frei tangential auf Rollen 30 verschiebbar gelagert und wird bei der Schwenkbewegung in Anlage an Seitenanschläge 32 des Zwischenträgers 28 verbracht. Für eine mittige Lagerung des Preßbalkens 6 in dem Zwischenträger 28 sind Druckfedern 31 vorgesehen, über die sich der Preßbalken 6 seitlich an dem Zwischenträger 28 abstützt.The press beam 6 is mounted concentrically and freely tangentially on rollers 30 in an intermediate carrier 28 of the supporting part 5 and is brought into contact with side stops 32 of the intermediate carrier 28 during the pivoting movement. Compression springs 31 are provided for centering the pressure beam 6 in the intermediate carrier 28, by means of which the pressure beam 6 is supported laterally on the intermediate carrier 28.

Der Antrieb des Zwischenträgers 28 mit dem Preßbalken 6 von der Buchblockrückenmitte aus abwechselnd zu der einen und anderen Seite des Buchblockrückens erfolgt wiederum in bekannter vorab beschriebener Weise über die Brücke 5 mit der gelenkig angreifenden Antriebsstange 7 unter einer definierten Preßkraft.The drive of the intermediate carrier 28 with the press beam 6 from the middle of the book block back to the one and the other side of the book block back alternately takes place in a known manner described above via the bridge 5 with the articulated drive rod 7 under a defined pressing force.

Wie vorab beschrieben, verschiebt sich der Preßbalken 6 tangential, wobei über Anschlagschrauben 32 im Zwischenträger 28 eine Begrenzung der Verschiebung erfolgt und somit die Schiebebewegung zum Umlegen der Druckbogen in den Seitenbereichen des Buchblockrückens eingeleitet wird.As described above, the pressure beam 6 moves tangentially, with the stop screws 32 in the intermediate carrier 28 limiting the displacement and thus initiating the sliding movement for folding the printed sheets in the side areas of the book block spine.

Durch Abstandsveränderung des Drehpunktes des Preßbalkens 6 zum Buchblockrücken sowie über die Anschlagschrauben 32 läßt sich die Größe des Verschiebehubes einstellen.The size of the displacement stroke can be adjusted by changing the distance between the pivot point of the press beam 6 and the back of the book block and via the stop screws 32.

Ohne Vertikalbewegung des Preßbalkens 6 beim Rückhub wird ein Zurückreißen der umgelegten Druckbogen vermieden.Without vertical movement of the press beam 6 during the return stroke, tearing back of the folded printed sheets is avoided.

Wie aus den Figuren 11 und 12 ersichtlich stützt sich in einer vierten Ausführungsvariante die Abpreßeinheit beim Abpreßvorgang seitlich entgegen der Wirkung von Tellerfederpaketen 35 ab, wodurch eine Preßkraft zum Umlegen der Druckbogen des Buchblocks 1 in den Seitenbereichen des Rückens aufgebracht wird. Dabei befindet sich der Drehpunkt des Preßbalkens 6 in seinem Berührungspunkt zum Buchblockrücken.As can be seen from FIGS. 11 and 12, in a fourth embodiment variant, the pressing unit is supported laterally against the action of plate spring assemblies 35 during the pressing process, as a result of which a pressing force for folding over the printing sheet of the book block 1 is applied in the side areas of the spine. The fulcrum of the press beam 6 is at its point of contact with the spine of the book block.

Gemäß der Erfindung wird vorgeschlagen, die Wirkung des Tellerfederpaketes 35 während des Rückhubes des Preßbalkens 6 zur Buchblockrückenmitte aufzuheben, um ein Mitreißen der nach den Seiten hin umgelegten äußeren Druckbogen zu verhindern. Dabei kann die Bewegung des Preßbalkens 6 zusätzlich derart gesteuert sein, daß dieser während seines Rückhubes vom Rücken des Buchblocks durch eine Aufwärtsbewegung frei kommt.According to the invention, it is proposed to cancel the effect of the plate spring assembly 35 during the return stroke of the press beam 6 to the center of the book block, in order to prevent entrainment of the outer printed sheets folded over to the sides. The movement of the press beam 6 can also be controlled in such a way that it is released during its return stroke from the back of the book block by an upward movement.

Seitlich des Lagers 3 sind über Nockenscheiben 37 gesteuerte Stößel 36 vorgesehen, die das Lager 3 wechselseitig beaufschlagen und die Tellerfederpakete 35 aus einer Abstützposition zum Aufbringen einer Preßkraft in eine Entlastungsposition überführen.On the side of the bearing 3, tappets 36 controlled via cam disks 37 are provided which act alternately on the bearing 3 and transfer the plate spring assemblies 35 from a support position for applying a pressing force into a relief position.

Hierzu stützt sich das Tellerfederpaket 35 einerseits an einem Anschlagbund 38 der Stößel 36 und andererseits an einer auf dem Stößel 36 geführten Schiebemuffe 39 mit einer Steuerrolle 40 ab, die mit der umlaufend angetriebenen Nockenscheibe 37 in Wirkverbindung steht. Stößel 36 und Schiebemuffe 39 sind in Lagerungen 41 und 42 verschiebbar geführt.For this purpose, the plate spring assembly 35 is supported on the one hand on a stop collar 38 of the plunger 36 and on the other hand on a sliding sleeve 39 guided on the plunger 36 with a control roller 40 which is operatively connected to the rotatingly driven cam disk 37. Ram 36 and sliding sleeve 39 are slidably guided in bearings 41 and 42.

Gemäß Figur 11 befindet sich der Preßbalken 6 in einer bis auf den Rücken eines gerundeten, zwischen den Klemmbacken 8 eingespannt gehaltenen Buchblocks 1 abgesenkten Position vor Beginn der Preßbalkenbewegung zur Seite hin. Die beidseitigen Stößel 36 sind am Lager 3 in Anlage gehalten.According to FIG. 11, the press beam 6 is in a lowered position to the side of a rounded book block 1 held between the clamping jaws 8 before the start of the press beam movement. The tappets 36 on both sides are held in contact with the bearing 3.

Figur 12 zeigt den Preßbalken 6 nach ausgeführter Seitwärtsbewegung und somit nach vollzogenem Abpreßvorgang, wobei sich das Lager 3 entgegen der Wirkung des Tellerfederpaketes 35 über die Stößelsteuerung seitlich abstützt und somit über das Federelement eine Preßkraft zum Umlegen der Druckbogen des Buchblocks 1 in den Seitenbereichen des Rückens aufgebracht wird.FIG. 12 shows the press beam 6 after a sideways movement and thus after the pressing process has been carried out, the bearing 3 being supported laterally against the action of the plate spring assembly 35 by means of the tappet control and thus by means of the spring element a pressing force for folding the printing sheets of the book block 1 in the side areas of the back is applied.

In einer zur vierten Ausführungsvariante abgewandelten Konstruktion gemäß Figur 13 finden anstelle der Stößelsteuerung und Tellerfederpakete Arbeitszylinder 43 Verwendung, über die das Lager 3 wechselseitig aus einer Abstützposition in eine Entlastungsposition steuerbar ist.In a construction according to FIG. 13 modified to the fourth embodiment variant, working cylinders 43 are used instead of the tappet control and plate spring assemblies, by means of which the bearing 3 can be controlled alternately from a support position to a relief position.

Bei allen vorab beschriebenen Ausführungsvarianten ist ein einmaliges Abpressen auf jeder Seite des Buchblockrückens ausreichend. Anstelle der verwendeten konkaven Wirkfläche 6a des Preßbalkens 6 kann die Wirkfläche auch konvex oder gerade ausgebildet sein.With all the design variants described above, a single pressing on each side of the book block spine is sufficient. Instead of the concave active surface 6a of the press beam 6 used, the active surface can also be convex or straight.

Die Erfindung wurde voranstehend an Ausführungsbeispielen beschrieben. Es versteht sich, daß Änderungen sowie Abwandlungen möglich sind, wie sie innerhalb des Schutzumfanges der Ansprüche definiert werden.The invention has been described above using exemplary embodiments. It is understood that changes and modifications are possible as defined within the scope of the claims.

Claims (22)

  1. An apparatus for backing book blocks by mechanical means, the book blocks, having been rounded, being held in a clamped condition and being backed by means of a pressing beam which has a concave working surface and applies a pressing force to the book block spine, utilizing a load-bearing component with a carrier piece which serves as a means of mounting said pressing beam, and which can be caused to execute swinging movements, first to one side of the book block spine and then, in turn, to the other side, with the purpose of bending-over the printed sheets in the side regions of the book block spine, this apparatus comprising an arrangement (9-15; 16-18; 5b, 19, 20) which directs the load-bearing component (3) sideways in a defined manner and generates a tangential sliding movement of the pressing beam (6) onto the printed sheets in the side regions of the book block spine, this tangential sliding movement being superimposed on the swinging movement of said pressing beam (6).
  2. The apparatus as claimed in claim 1, comprising a rotationally-drivable controlling cam (10) which directs the load-bearing component (3) through the agency of actuating means (9, 11, 12).
  3. The apparatus as claimed in claim 2, comprising an adjusting arrangement (13-15) which enables the stroke distance of the sliding movement to be varied.
  4. The apparatus as claimed in claim 1, comprising a lever arrangement (16, 17) which acts via the carrier piece (5) carrying the pressing beam (6) and generates the sliding movement that is superimposed on the load-bearing component (3).
  5. The apparatus as claimed in claim 4, comprising a projecting portion (16) on the carrier piece (5) which serves as the means of mounting the pressing beam (6), said projecting portion (16) being pivotably connected to a fixed coupling rod (17) which acts on it below a notional center of rotation of said pressing beam (6).
  6. The apparatus as claimed in claim 4 or claim 5, wherein, having regard to varying the lever-arm length, the point at which the coupling rod (17) is pivotably attached to the projecting portion (16) can be shifted through the agency of adjusting means (16a, 17a).
  7. The apparatus as claimed in claim 1, comprising a track-type control arrangement (19, 20) which acts on the carrier piece (5) serving as the means of mounting the pressing beam (6), and which generates the sliding movement that is superimposed on the load-bearing component (3).
  8. The apparatus as claimed in claim 7, comprising side-located control tracks (20), against which rollers (19), associated with the carrier piece (5), run during the swinging movement, and further comprising resilient elements (25) which support the load-bearing component (3) laterally.
  9. The apparatus as claimed in claim 1, wherein the load-bearing component (3) is guided on an arc-shaped movement path (21, 22), the radius of which and the radius of the working surface (6a) of the pressing beam (6) lie on the same central point and below the center of rotation of said pressing beam (6).
  10. The apparatus as claimed in claim 9, wherein the movement path is formed by two separated path segments (21, 22) which, having regard to pressing-beam working surfaces (6a) of different radii, are radially adjustable.
  11. The apparatus as claimed in claim 1, wherein the load-bearing component (3), with the carrier piece (5) and the pressing beam (6), is vertically movable between fixed lateral guides (27), and said pressing beam (6) can be shifted in said carrier piece (5, 28), so as to execute a tangential sliding movement that is superimposed on the swinging movement.
  12. The apparatus as claimed in claim 11, wherein the pressing beam (6) is mounted concentrically within an intermediate carrier (28) which is associated with the carrier piece (5), such that said pressing beam (6) is freely shiftable and can be brought to a position where it bears against lateral stops (32) which are associated with said intermediate carrier (28).
  13. The apparatus as claimed in claim 12, wherein the distance through which the tangential sliding movement of the pressing beam (6) takes place can be adjusted through the agency of the lateral stops (32).
  14. The apparatus as claimed in claim 12 or claim 13, wherein the pressing beam (6) is laterally supported in the intermediate carrier (28), through the agency of resilient elements (31).
  15. The apparatus as claimed in claim 1, with a load-bearing component which is laterally supported against the action of a resilient element, so that a pressing force is generated with the purpose of bending-over the printed sheets in the side regions of the book block spine, this apparatus comprising a control system (36-40) which neutralizes the action of said resilient element (35) during the return stroke of the pressing beam (6) to the center of the book block spine.
  16. The apparatus as claimed in claim 15, comprising control systems (36-40) with tappet-like devices which enable pressure to be applied, in turn, to opposite sides of the load-bearing component (3) with the carrier piece (5) and the pressing beam (6), so as to switch the resilient element (35) from a supporting position, to a position in which the pressure is relieved, said resilient element (35) preferably being designed as a disk spring assembly.
  17. The apparatus as claimed in claim 15 or claim 16, wherein the disk spring assembly (35) is installed on a tappet-like device (36) and is supported, on one side, against a stop collar (38) which is associated with said tappet-like device (36), while on the other side it is supported against a sliding sleeve (39) which is guided on said tappet-like device (36) and carries a control roller (40) which is in functional association with a rotationally-drivable disk cam (37).
  18. The apparatus as claimed in claim 1 or claim 15, wherein the load-bearing component (3), with the carrier piece (5) and the pressing beam (6), can be directed, through the agency of working cylinders (43), from the supporting position and into the position in which the pressure is relieved.
  19. The apparatus as claimed in any one of claims 1 to 18, wherein the movement of the pressing beam (6) is controlled in a manner such that a once-only backing operation is performed on each side of the book block spine.
  20. The apparatus as claimed in any one of claims 1 to 19, wherein the working surface of the pressing beam (6) is given a convex configuration, or is designed to be flat.
  21. The apparatus as claimed in any one of claims 1 to 20, wherein the movement of the pressing beam (6) is controlled in a manner such that with the return stroke the pressing beam (6) is caused to lift away from the book block spine.
  22. The apparatus as claimed in any one of claims 1 to 21, wherein the center of rotation of the pressing beam (6) can be adjusted to a position above the book block spine.
EP95101536A 1994-03-18 1995-02-06 Device for mechanically backing book blocks Expired - Lifetime EP0676303B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4409319A DE4409319A1 (en) 1994-03-18 1994-03-18 Device for pressing blocks of books
DE4409319 1994-03-18

Publications (2)

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EP0676303A1 EP0676303A1 (en) 1995-10-11
EP0676303B1 true EP0676303B1 (en) 1997-04-02

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EP95101536A Expired - Lifetime EP0676303B1 (en) 1994-03-18 1995-02-06 Device for mechanically backing book blocks

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US (1) US5556244A (en)
EP (1) EP0676303B1 (en)
DE (2) DE4409319A1 (en)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
DE19903162A1 (en) * 1999-01-27 2000-08-03 Kolbus Gmbh & Co Kg Book pressing machine has press crosshead, carriage, drive mechanisms, support mounting, clamp and switchgear
DE102006023285A1 (en) * 2006-05-18 2007-11-22 Kolbus Gmbh & Co. Kg Book block pressing device, has slide accommodating pressing bar, where pivoting position of slide is formed as eccentric initial position during lowering of pressing bar on back of book block
EP2465695A1 (en) 2010-12-15 2012-06-20 Müller Martini Holding AG Method and device for pressing a book block
DE102012006653A1 (en) 2011-04-27 2012-10-31 Müller Martini Holding AG Method for pressing book block at rounded back side of block during industrial production of block, involves outwardly symmetrically rolling two pressing bodies on preselectable trajectories of axis relative to each other for pressing block

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DE19859331A1 (en) * 1998-12-22 2000-07-06 Kolbus Gmbh & Co Kg Book block pressing out device, with shaping tool able to be moved in height in carriage by pneumatic cylinder
DE19907682A1 (en) * 1999-02-23 2000-08-24 Horst Rathert Rounding and pressing out process for book spines, involving rounding by force effect of form rails on block edges in middle region
ES2170669B1 (en) * 2000-06-15 2003-12-16 Venegas Salvador Romero PROCEDURE FOR THE BINDING OF THE SHEETS OF AN ALBUM OR BOOK.
DE10205677A1 (en) * 2002-02-12 2003-08-14 Kolbus Gmbh & Co Kg Press device for spines of book blocks, comprises arrangement of rolls with different pitch acting against middle and outsides of spines
DE10260476A1 (en) * 2002-12-21 2004-07-01 Kolbus Gmbh & Co. Kg Device for pressing blocks of books
BE1026865B1 (en) * 2018-12-12 2020-07-16 Peleman Industries Nv Folding device for making two parallel folds in a sheet of paper or the like
CN114801541A (en) * 2022-05-06 2022-07-29 东莞市浩信精密机械有限公司 Arc rounding mechanism for rounding spine of book block

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US3199129A (en) * 1964-05-11 1965-08-10 Tw & Cb Sheridan Co Machine and method for backing books
US3413669A (en) * 1967-02-01 1968-12-03 Smyth Mfg Co Mechanism for conveying unbound books intermittently through a rounding and backing machine
SU827324A1 (en) * 1979-05-10 1981-05-07 Омский политехнический институт Device for rounding book spines
DE8128207U1 (en) * 1981-09-26 1982-02-11 Rahdener Maschinenfabrik August Kolbus Gmbh & Co Kg, 4993 Rahden BOOK BLOCK ROUNDING AND PRESSING MACHINE
DE3614168C2 (en) * 1986-04-26 1994-06-30 Kolbus Gmbh & Co Kg Device for height adjustment of the form block in a book block rounding and pressing machine
DE4005949A1 (en) * 1990-02-26 1991-08-29 Kolbus Gmbh & Co Kg METHOD FOR MACHINE PRESSING BOOK BLOCKS AND DEVICE FOR CARRYING OUT THE METHOD

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19903162A1 (en) * 1999-01-27 2000-08-03 Kolbus Gmbh & Co Kg Book pressing machine has press crosshead, carriage, drive mechanisms, support mounting, clamp and switchgear
DE19903162B4 (en) * 1999-01-27 2008-04-17 Kolbus Gmbh & Co. Kg Pressing machine for pressing book blocks
DE102006023285A1 (en) * 2006-05-18 2007-11-22 Kolbus Gmbh & Co. Kg Book block pressing device, has slide accommodating pressing bar, where pivoting position of slide is formed as eccentric initial position during lowering of pressing bar on back of book block
EP1872963A2 (en) 2006-05-18 2008-01-02 Kolbus GmbH & Co. KG Device for pressing book block
DE102006023285B4 (en) * 2006-05-18 2015-02-12 Kolbus Gmbh & Co. Kg Device for pressing book blocks
EP2465695A1 (en) 2010-12-15 2012-06-20 Müller Martini Holding AG Method and device for pressing a book block
DE102012006653A1 (en) 2011-04-27 2012-10-31 Müller Martini Holding AG Method for pressing book block at rounded back side of block during industrial production of block, involves outwardly symmetrically rolling two pressing bodies on preselectable trajectories of axis relative to each other for pressing block

Also Published As

Publication number Publication date
EP0676303A1 (en) 1995-10-11
DE4409319A1 (en) 1995-09-21
DE59500160D1 (en) 1997-05-07
US5556244A (en) 1996-09-17

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