EP3235654A1 - Shaping tool and device for the forming of book covers - Google Patents

Abstract

The invention relates to a deformation tool (10, 10 ') for a device for rounding a back region (4) and for deforming a book cover (2) lying horizontally stretched out lying on both sides of the back region (4) in accordance with the shape of the cover Back each one of a book block together with a book cover (2) forming a book. The deformation tool (10, 10 ') has a fixed, convex center-forming web (21) and two laterally adjoining thereto, corresponding to the required rounding and width of the back region (4) of the book cover (2) also adjustable, convex outer moldings (22 , 22 '). In addition, the invention relates to a device (1) with at least one such deformation tool (10, 10 ').

Description

The invention relates to a deformation tool for a device for rounding a back region and for deforming in each case one lying on both sides of the back region adjacent Falzbereichs lying outstretched book covers according to the shape of the back of a book post together with a book cover book block and a device with at least one such deformation tool.

The industrial Buchendherstellung of hardcover books is mainly on book production lines on which book blocks are each combined with an associated book cover to finished books. In so-called hooking, i. When gluing the book cover to the book block, its edge-precise joining is decisive for a harmonious connection. Of importance for a high book quality is therefore the prior adaptation and possibly deformation of the book cover in its central area, i. in the back area, which takes up the back of the book block in the finished book. Equally important is the deformation of the fold areas of the book cover, which adjoin each other directly at the center area, which form the later opening hinges of the finished book. The requirements for each under heat deformation of the book cover and thus to the deformation tool used differ depending on whether the finished book has a rounded or a square back and depending on the shape of the curve and the book thickness. Accordingly, the deformation tools must be designed to be adjustable and / or replaceable.

From the DE1436086 A is a bookbinding machine with a hooking known, in which the book cover is transferred from a magazine in a deformation station. There, the book cover in the back area is first rounded by a deformation tool. During the course of the formation of the fold areas separating the back area from the lateral book covers of the book cover Disengaging the deformation tool two Falzformschienen in the opposite direction at least brought up to the book cover. This in the DE1436086 A only very generally described procedure can be the DE19853254 A1 in more detail, which relates to a device for rounding book covers. There, the back portion of the book cover is pressed by means of a trained according to the shape of the book block, heated deformation tool against an elastically deformable support. The back area is rounded and the pressed-in rebate areas are made articulated. Usually, the deformation tools are kept ready in common shape-dependent gradations and replaced in a change in the back shape of the book cover or the thickness class of the associated book block. Accordingly, the production of books of different thicknesses requires the provision of a number of corresponding forming tools, which causes relatively high costs for the forming tools and thus also for the entire device for deforming book covers.

The required manual change of the deformation tools also increases the set-up times of the machine. Finally, the newly used deformation tools have no operating temperature and must therefore be heated after installation first.

With the EP2325020 A1 is a device for deforming book covers for books with straight back known. Their depending on the thickness class of the books to be produced each interchangeable deformation tool has two spaced-apart, each resting on a tool bar by means of a baseboard, vertical moldings. The moldings are arranged in an initial position below and spaced from the book cover, which is initially still in an extended position. To form the provided on both sides of the back region folding areas of the book cover the moldings are dug together with their tool bar against above arranged Gegenformleisten. To deform the book cover is a heat application on the deformation tools. For this purpose, the tool bar carrying the deformation tool rests on an intermediate element designed as a heating element and equipped with heating rods. With the heating element, the deformation tool is both brought to operating temperature and held on this.

About their respective baseboard, the moldings in a management level in each case with two along its longitudinal extent spaced from each other, are coupled eccentrically rotatable about a vertical axis driven and guided in the tool bar drivers. The distance between the two support strips and thus the width of the back region of the book cover can be adjusted within a certain thickness class via an adjustment of the drivers taking place by means of a common drive. In this case, the introduction of the actuating force takes place in the tool bar by means of a positioning mechanism arranged below this. An actuator is arranged parallel to a longitudinal axis of the deformation tool.

The EP2923852 A2 also relates to a device for deforming book covers. In addition to a first book cover forming tool intended for straight back book blocks, there is also disclosed a second book cover forming tool suitable for round back book blocks. With the second deformation tool, the back region of a book cover can be rounded during its removal from its stretched position, wherein different formats and contours of the back region can be produced. For this purpose, this deformation tool on a base element, in which a first mold element is slidably disposed. It is achieved by means of a ramp-shaped guide that with a longitudinal displacement of the first element element and its altitude relative to the base element can be changed. In the same way, a second mold element is arranged in the first mold element, so that both mold elements can be adjusted to one another or to the base element in a vertical plane to the flat-stretched book cover. Within a certain thickness class of spine areas, both the width and the height can be used as needed Also, the curvature of the back area successively to be processed book covers are formed differently without changing the deformation tool.

However, the two separately to be adjusted form elements of this deformation tool each require a separate drive and separate fasteners, so that the deformation tool is relatively complex and expensive. Due to the adjustment in the vertical direction of the two form elements occurring during deformation of the back region of the book covers forces must be absorbed by the connecting elements and / or the drive, which can lead to a deterioration in the quality of the trainees rounding of the back area due to the existing game. In addition, vertical gaps are formed both between the base element and the first mold element and between the first and the second mold element of the deformation tool. When deforming the usually consisting of paper and / or cardboard, to be deformed back areas material components can solve and penetrate into this vertical column. As a result, the function of the deformation tool and thus also of the at least one such deformation tool receiving device for deforming book covers can be impaired. Finally, either no support of the shaping is provided by an additional heat application via the deformation tool or a newly used deformation tool must be preheated before its first use.

The object of the invention is therefore to provide a simple and cost-effective deformation tool and a device having at least one such deformation tool for rounding the back region lying outstretched book covers and for deforming a fold region adjacent to both sides of the back region, respectively one after the other jointly with one of the Book covers to create a book-forming book block. In addition, the deformation tool and the device in a simple manner to a deviating in a follow-on order thickness and / or Adjusted shape of the deformed back area and a consistently good quality of the rounding of the back area can be ensured.

This object is achieved by a deformation tool according to the characterizing part of claim 1 and by a device according to the characterizing part of claim 5. Advantageous embodiments are objects of the respective subclaims.

The deformation tool according to the invention has a fixed, convex center-forming web and two laterally adjoining the center-forming web, also laterally adjustable, likewise convex, outer moldings, corresponding to the required rounding and width of the back region of the book cover.

Such a simple and inexpensive deformation tool can be adjusted very easily and quickly by a corresponding lateral adjustment of the outer moldings according to a subsequent order with different thickness and / or shape of the back region to be deformed. In addition, a consistently good quality of the rounding of the back area as well as the deformation of the folding area adjoining on both sides can thus be ensured.

According to one embodiment, the deformation tool according to the invention has a tool bar that is positively or positively connected to the center molding web and the outer moldings. Such a tool bar can advantageously accommodate different deformation tools and pass on the necessary lifting and adjusting movements to the respectively recorded deformation tool.

According to a further embodiment of the deformation tool according to the invention, the center forming web is designed symmetrically and, in a region facing the tool bar, has on both sides a respective recess for at least partially receiving the outer moldings. Thus, the outer moldings for adjusting the rounding and the width of the Back portion of the book cover dive into the contour of the Mittenformstegs, which allows a relatively large adjustment range of the deformation tool.

According to a further embodiment of the deformation tool according to the invention, the outer moldings are designed to be adjustable symmetrically with respect to a longitudinal center axis of the center mold web. Analogous to the symmetrical design of the book block so that the book cover can be symmetrically formed. This can be advantageously realized with a single actuator.

The inventive device for deforming a back region and in each case one lying on both sides of the back region adjacent fold region lying outstretched book covers is advantageously equipped with at least one inventive deformation tool.

In one embodiment of the device according to the invention, at least one deformation tool is arranged to cooperate with a counter tool aligned with an outer side of the back region of the book covers. In this case, the counter tool has two mutually spaced, corresponding to the width of the back portion of the book cover laterally adjustable Gegenformleisten. With such a device, the back area can be rounded and deformed in a particularly good quality even with successively to be processed book covers made of different materials.

In a further embodiment of the device according to the invention, at least two different deformation tools suitable for different thickness classes of back regions of the book covers to be deformed are arranged. For example, a device equipped with two different deformation tools according to the invention can deform book covers for corresponding book blocks with a thickness of up to 60 mm. When using the device according to the invention therefore very few deformation tools are needed to cover a relatively large thickness range to be deformed book covers.

In a further embodiment, the device according to the invention has a working position for a first deformation tool and in each case a rest position for at least one second deformation tool. With the rest position is advantageously given a specific position for the at least one, not in the working position deformation tool.

In a further embodiment of the device according to the invention, the first deformation tool located in its working position is aligned with an inner side of the back region of a book cover, lifting the back region of the book cover between the two counter-molding strips and thereby forming a back web of the book cover.

In a further embodiment of the device according to the invention, at least one preheating station for the at least one second deformation tool located in the rest position is arranged in the device. Due to the presence of the at least one preheating station, the deformation tool required for a new work order can be transferred from the rest position to the working position already preheated. Therefore, the new deformation tool is ready for use immediately, whereby a relatively short job change can be realized. Since the preheating of the deformation tools in the device and thus in the immediate vicinity of the site, the hot deformation tools are housed protected against unauthorized access. By a corresponding production control, the production orders can be summarized according to the format change and the effectiveness of the machine can be increased, since subsequent orders are driven with the same preheated deformation tool.

In a next embodiment of the device according to the invention, a separate preheating station is arranged for each deformation tool. This allows an even faster exchange of the deformation tools and thus a faster format change done, which increases the performance of the device.

According to a further embodiment of the device according to the invention, at least one sensor for identifying the deformation tools is arranged. Through this identification, an error-free assignment of the deformation tools to the respective work order and ultimately also an increase in performance is possible in advance.

According to a further embodiment of the device according to the invention, the at least one sensor is arranged in at least one of the preheating stations and aligned with a deformation tool located in its rest position or the at least one sensor is arranged on a receiving element for the tool bar and aligned with a deformation tool located in its working position. As a result, depending on the job advantageously several options for the identification of the deformation tools.

In a further embodiment of the device according to the invention, the tool bar of the respective deformation tool arranged in the working position can be coupled to an actuator. In this case, this actuator is arranged laterally to an imaginary, vertical plane through a longitudinal center axis of the tool bar located in its working position. Thus, the device can be constructed very compact.

Due to the small number of deformation tools required in the device according to the invention, it is possible to assign each deformation tool its own coded preheating station, the temperature of which can be set as a function of the book cover to be processed. The temperature settings of the different materials are stored in the machine control and can be assigned to the coded preheating stations based on the existing order data of the follow-up orders. In addition, it is possible by encoding the deformation tools that their use is monitored in the machine and so misadjustments are prevented.

The grading of the deformation tools according to thickness classes is dependent on other parts of the book making machine, so that a rational production is ensured within this grading. Thus, the gradations are determined in terms of book thickness so that in a grading in any area of the book production line replacement parts must be replaced.

Fig. 1

eine räumliche Teil-Darstellung der erfindungsgemässen Vorrichtung zum Verformen liegend ausgestreckter Buchdecken mit einem erfindungsgemässen Verformungswerkzeug, mit einem beispielhaften Stellantrieb und dessen Verbindungselementen zum Verformungswerkzeug,

Fig. 2

eine vergrößerte Darstellung des erfindungsgemässen Verformungswerkzeugs,

Fig. 3

eine Darstellung der Vorrichtung aus Fig. 1, mit abgenommenem Verformungswerkzeug,

Fig. 4

einen Querschnitt der in Fig. 1 dargestellten Vorrichtung, mit einem Gegenwerkzeug und einer verformten Buchdecke,

Fig. 5

einen Ausschnitt der erfindungsgemässen Vorrichtung mit erfindungsgemässen Verformungswerkzeug, dem Gegenwerkzeug und einer zur Verformung bereitliegenden Buchdecke eines ersten Formats,

Fig. 6

einen Ausschnitt der erfindungsgemässen Vorrichtung entsprechend Fig. 5, jedoch mit einer gerundeten Buchdecke,

Fig. 7

einen Ausschnitt der erfindungsgemässen Vorrichtung analog Fig. 5, jedoch mit einer Buchdecke eines zweiten Formats,

Fig. 8

einen Ausschnitt der erfindungsgemässen Vorrichtung analog Fig. 7, jedoch mit einer gerundeten Buchdecke des zweiten Formats.

Fig. 9

Eine perspektivische Draufsicht auf eine erfindungsgemässe Vorrichtung, welche beispielhaft in eine Deckenzuführung integriert ist, die ihrerseits zwei Vorwärmstationen für Verformungswerkzeuge aufweist.

The invention will be described in more detail with reference to an embodiment. Showing:

Fig. 1

3 shows a partial, partial view of the device according to the invention for deforming lying outstretched book covers with a deformation tool according to the invention, with an exemplary actuator and its connecting elements to the deformation tool,

Fig. 2

an enlarged view of the inventive deformation tool,

Fig. 3

a representation of the device Fig. 1 , with removed deformation tool,

Fig. 4

a cross section of in Fig. 1 illustrated device, with a counter tool and a deformed book cover,

Fig. 5

a detail of the device according to the invention with a deformation tool according to the invention, the counter-tool and a book cover of a first format ready for deformation,

Fig. 6

a section of the inventive device accordingly Fig. 5 but with a rounded book cover,

Fig. 7

a section of the inventive device analog Fig. 5 but with a book cover of a second format,

Fig. 8

a section of the inventive device analog Fig. 7 but with a rounded book cover of the second format.

Fig. 9

A perspective top view of a device according to the invention, which is integrated by way of example in a ceiling feed, which in turn has two preheating stations for deformation tools.

The Fig. 1 shows a partial representation of an inventive device 1 for deforming lying outstretched book covers 2 ( Fig. 5 . Fig. 7 ), which are combined together with each one having a round back, not shown book block to a book, also not shown. Such a book cover 2 consists essentially of two lateral book covers 3, 3 'and a the back of the book block receiving, referred to as back portion 4 middle part ( Fig. 4 to Fig. 9 ). The back region 4 may be provided on its inside with a reinforcing, for example cardboard or waste paper insert 5 ( Fig. 5 . Fig. 7 ). The book cover 2 has on both sides of the back region 4 each one of these with the book covers 3, 3 'connecting and in the finished book in each case an opening hinge forming fold region 6, 6' on ( Fig. 4 to Fig. 8 ).

As in Fig.1 1, the device 1 is equipped with a first deformation tool 10 located in a working position 7 and also brought from a lowered into an excavated position, which is coupled to an actuating drive 9 designed as a drive motor. As an actuator, of course, for example, spindle or worm drives can be used.

The Fig. 2 shows an enlarged view of a second inventive deformation tool 10 'of the device 1. The second deformation tool 10' is then coupled to the actuator 9 when the next book cover to be deformed 2 requires a different thickness classes of back regions 4 according to a subsequent production order. When deforming with the first and the second deformation tool 10, 10 ', the two fold regions 6, 6' are reshaped and their back region 4 is rounded from the extended position such that the deformed book cover 2 'is subsequently suitable, with a corresponding book block to be connected to a book.

As in Fig. 1 also shown, the first forming tool 10 has a fixed, convex Mittenformsteg 21 and two laterally of the Mittenformstegs 21 to this subsequent, according to the required rounding and width of the back portion 4 of the book cover 2 to be deformed laterally adjustable, also convex, outer moldings 22, 22 ' , Both the central forming web 21 and the two outer moldings 22, 22 'are located on a common tool bar 13 and are connected to this non-positively or positively. In addition, the two outer moldings 22, 22 'on the tool bar 13 arranged laterally displaceable. In this way, the outer moldings 22, 22 'can be adjusted according to the required width of the back region 4 of the book cover 2.

The outer moldings 22, 22 'are provided on their underside, for example, with permanent magnets, not shown, or with switchable and disconnectable electromagnets which generate on the top of the ferrous tool bar 13 relatively large forces of attraction. These attractive forces ensure intimate contact between the upper side of the tool bar 13 and the outer moldings 22, 22 ', so that a good heat transfer into these outer moldings 22, 22' and thus to the book cover 2 to be deformed is ensured.

The tool bar 13 has approximately the length of the outer moldings 22, 22 'and is formed wider than the required for the largest to be deformed with the device 1 book cover 2 distance of the outer moldings 22, 22'. The tool bar 13 located in its working position 7 like the first forming tool 10 rests on a receiving element 14 of the device 1. The actuator 9 is arranged laterally to an imaginary, vertical plane through a longitudinal central axis 15 of the tool bar 13 ( Fig. 3 ). The outer moldings 22, 22 'are arranged symmetrically to a longitudinal central axis 24 of the central forming web 21 and symmetrically to this longitudinal central axis 24 adjustable.

The at least approximately over the height of a book cover 2 extending first deformation tool 10 is in its lowered position first below and spaced to a serving for deformation and in Fig. 4 shown support plane 16, which is arranged transversely to the conveying direction of the book block a downstream of the device 1, the connection of the book block with the rounded book covers 2 'serving, not shown hanging machine runs.

The device 1, in addition to the located respectively in the working position 7 and directed to an inner side 17 of the back region 4 of a book cover 2 to be deformed deformation tool 10 also arranged above the deformation tool 10, cooperating with this and on an outer side 18 of the deformed or deformed back portion 4, 4 of this book cover 2 'directed counter tool 19. The counter tool 19 has two mutually spaced, perpendicular and aligned parallel to the back region 4 of the book cover 2 to be deformed Gegenformleisten 20, 20 '( Fig. 5 . Fig. 7 ). These are also formed according to the required width of the back portion 4 of the book cover 2 to each other adjustable.

Corresponding Fig. 2 the second deformation tool 10 'according to the invention also has a fixed position, in the working position in the direction of the counter-tool 19 (FIG. Fig. 5 ) aligned, convex Mittenformsteg 21 and two laterally of the Mittenformstegs 21 arranged according to the rounding and the width of the back portion 4 of the book cover 2 to be deformed laterally adjustable and in the working position 7 also in the direction of the counter tool 19 aligned, convex outer moldings 22, 22 ' on. The center forming web 21 is formed symmetrically and has in a region facing the tool bar 13 on both sides a respective recess 23, 23 'for at least partially receiving the outer moldings 22, 22'. The latter are formed symmetrically to a longitudinal central axis 24 of the central forming web 21 adjustable.

In addition to the attractive forces already described above, two end-side guides 25, 25 'can absorb the process forces when deforming the respective book cover 2. For this purpose, two protuberances 26, 26 'of each of the two end-side guides 25, 25' penetrate into end-side grooves 27, 27 'of the outer moldings 22, 22 'and hold them on contact with the tool bar 13. The setting of the two end guides 25, 25' may be such that they withstand a thermal expansion of several hundred degrees Celsius without impairment and a smooth movement of the outer moldings 22, 22 ' do not counteract.

For deforming the rebate areas 6, 6 'of the book cover 2 provided on both sides of the back region 4, the respective deformation tool 10, 10' together with the tool bar 13 is initially lifted against the counter-tool 19 or its counter-molding strips 20, 20 'arranged above and with the center forming web 21 and the outer moldings 22, 22 'a spine 28 of the book cover 2' is formed. The convex curves of the central forming web 21 and the outer moldings 22, 22 'of each located in its working position 7 deformation tool 10, 10' for the rounding of the raised spine 28 and thus the back portion 4 'of the book cover 2' in accordance with the rounding of the back an associated book block.

Fig. 3 shows a partial view of the inventive device 1 with removed deformation tool 10, 10 '. As a result, serving as a management level smooth bearing surface 29 of the tool bar 13 can be seen, which has good sliding properties for each located in its working position 7, not shown here, deformation tool 10, 10 'has. As can be seen, the tool bar 13 also serves to receive rotary bodies, for example, vertical axes of rotation 30, 30 'drivable discs 31, 31', which are mounted in spaced along the tool carrier 13 recesses 32, 32 'of the tool carrier 13. The discs 31, 31 'have, on their side aligned with the deformation tool 10, 10' located in the working position 7, with respect to the respective axis of rotation 30, 30 'opposing drivers 33, 34, 33', 34 '.

The discs 31, 31 'are countersunk in the tool bar 13 in such a way that they do not touch the deformation tool 10, 10' located in the working position 7. The Deformation tools 10, 10 'have in their resting on the tool bar 13 side each parallel to the axis of rotation 30, 30' of the discs 31,31 'aligned recesses 35, 35' on which formed, for example, as studs drivers 33, 34, 33 ' , 34 'are at least partially enforced. Shown is only the corresponding interaction in each case one of the drivers 34, 34 'with the recesses 35, 35' of in Fig. 1 Of course, the rear outer mold bar 22 has corresponding, but here concealed recesses 35, 35 ', in which in each case one of the drivers 33, 33' engages.

In order that in each case an optimally effective, mutually oppositely directed side stroke of the outer moldings 22, 22 'of each located in its working position 7 deformation tool 10, 10' can be achieved, the drivers 33, 34, 33 ', 34' a disc 31, 31st 'in an initial position, for example, at an angle of approximately 45 ° to the longitudinal central axis 15 of the tool bar 13 diametrically opposite aligned ( Fig. 3 ). The rotational movements of the disks 31, 31 'are realized by means of a slide 37 of a sliding device 38 which is fastened to the circumference of each disk 31, 31' and laterally projects beyond the tool beam 13, by means of a slide 37 of a sliding device 38 which is connected to a drive cam 39. For a uniform change in the distance between the outer moldings 22, 22 'of the forming tool 10, 10' is guaranteed. The adjustment or adjustment of this distance can be done by means of motor or manual power. To increase the accuracy, a controller connected to a controllable motor can also be used.

The movement cams 36, 36 'projecting on one side of the tool bar 13 are connected by means of joints 40, 40' or lateral guides to the slide 37 which is displaceably mounted on a frame 41 of the device 1 and displaceable back and forth. By a common rotation of the discs 31, 31 ', the drivers 33, 34, 33', 34 'respectively move inwardly or outwardly and thereby reduce or increase the distance between the outer moldings 22, 22' of the forming tool 10, 10 '.

Thus, the outer moldings 22, 22 'of the deformation tool 10, 10' during rotation of the discs 31, 31 'do not move in their longitudinal direction mutually, is between the tool bar 13 and located in each working position 7 deformation tool 10, 10' a transverse directed to the longitudinal extent of the first guide assembly 42 is provided, for example, a transverse to the longitudinal extent of said components groove 42 'in the tool bar 13 and an engaging pin 42 "( Fig. 1 ) or the like. Of the deformation tool 10, 10 'has. In this way it is ensured that the outer moldings 22, 22 'exclusively transverse to the longitudinal extent of the respective forming tool 10, 10' are adjustable. This represents an alternative solution to the previously described, end-side guides 25, 25 '.

Fig. 4 shows a cross section of the equipped with a first forming tool 10 and a counter tool 19 device 1 and an already deformed book cover 2 'with rounded back portion 4' and with the two deformed fold areas 6, 6 '. Shown here is the arrangement of the also associated with the frame 41 deformation tool 10 and connected via the slider 37 with the forming tool 10 sliding device 38. The drive with the discs 31, 31 ', flat downwardly extending slide 37 has a second guide assembly 43rd on ( Fig. 3 ), which allows its displacement parallel to the longitudinal extent of the tool bar 13. The second guide assembly 43 has two extending in this direction, spaced from each other arranged slots 44, 44 'and each one attached to the frame 41, the slots 44, 44' associated and immersed in this sliding block 45, 45 ', where the slide 37th is moved back and forth.

Between the oblong holes 44, 44 'is a bottom-up reaching slot-like opening 46 ( Fig. 1 . Fig. 3 ) provided for the drive cam 39 designed as a driver, which is indirectly connected to the actuator 9. The opening 46 permits lifting and lowering of the first deformation tool 10 connected to the frame 41.

Like that Fig. 1 . 3 and 4 can be removed, it is the illustrated actuator 9 is a geared motor whose output shaft 47 is formed as a spindle. The output shaft 47 intermeshes a spindle nut of a guided on a rod 49 in the direction of the sliding movements of the slider 37 actuator 48 to which the drive cam 39 is attached. For storage of the output shaft 47 connected to the frame 41 bearing plate 50 and a bearing block 51 are provided. Instead, of course, a rack and pinion gear can be provided as an actuator.

Corresponding Fig. 4 Lifting of the first deformation tool 10 via a connected to the receiving element 14 of the tool bar 13 console 52, which cooperates along a fixed to the frame 41 of the device 1 guide rod 53 with a known, not shown piston-cylinder unit or other lifting drive , By raising the first deformation tool 10 (see the stroke 61 indicated by a double arrow), the back region 4 'of the book cover 2' with the center molding web 21 and the two outer moldings 22, 22 'is between the opposing counterform moldings 20, 20' of the counter tool 19 a back ridge 28 forming raised and deformed under the influence of heat. In this case, the fold areas 6, 6 'on both sides of the back region 4' are also deformed into opening hinges. The arranged below the tool bar 13 receiving element 14 is designed as a heating element and equipped with heating rods 54, from which the heat on the tool bar 13 and the center forming web 21 and the moldings 22, 22 'is transmitted to the deformed back portion 4 of the book cover 2 to keep the deformation tool 10 at operating temperature.

For precise positioning of the deformation tool 10, 10 ', for example, a centering device 75 connected to the receiving element 14 with a conical positioning pin 55 is provided (FIG. Fig. 1 . Fig. 3 ), which under spring pressure in a designated bore 56 ( Fig. 2 ) is engaged on the front side of the tool bar 13.

For the further embodiment of the drive and the connecting elements to the deformation tools 10, 10 'of the device 1 is on the above-mentioned EP2325020 A1 referred, which in this regard is to be understood as an integral part of the device 1.

The Fig. 5 shows a section of the device 1 with the located in its working position 7 second deformation tool 10 ', with the Gegenformleisten 20, 20' of the counter tool 19 and on inner support elements 57, 57 'of a ceiling feed 58 (FIGS. Fig. 9 The second deformation tool 10 'is still in its lowered position, ie below the support plane 16 and thus spaced from the book cover 2. In this position, the second deformation tool 10' to a width 59 of the insert 5 of the back region 4 of the book cover 2 set. For this purpose, the outer moldings 22, 22 'of the second deformation tool 10' on the support surface 29 ( Fig. 3 ) of the tool bar 13 according to the width 59 of the insert 5 further into the recesses 23, 23 'of the central forming web 21 into or further out of these recesses 23, 23' out. By setting the outer width 60 of the outer moldings 22, 22 ', the shape or the equivalent radius of the second deformation tool 10 is determined.

The Fig. 6 shows the second deformation tool 10 'in his meantime by a hub 61 from the in Fig. 5 shown position raised upward position. The stroke 61 is dependent on the thickness of the respective book block and the associated book cover 2 and is calculated by a machine control, not shown, and as described above transferred to the second forming tool 10 '. After deformation, the insert 5 and thus the now rounded back region 4 'of the book cover 2' has shortened from its original width 59 to a projected width 59 'forming a back web 28, wherein inner edges of the Gegenformleisten 20, 20' with outer edges of the insert. 5 to lock. The projected width 59 'of the insert 5 thus corresponds to a thickness of the associated, rounded and pressed book block.

Analogous to Fig. 5 show the Fig. 7 a section of the device 1, with the second deformation tool 10 ', also in its lowered position of the working position 7, with the counter-molding strips 20, 20' of the counter-tool 19 and with a deformation-ready, belonging to a rounded and pressed book block with a different thickness Book cover 2 with a different format. The second deformation tool 10 'is therefore set to a width 62 of a different format insert 5' of the back portion 4 of the book cover 2 also having a different format. By means of a corresponding displacement of the outer moldings 22, 22 'on the tool bar 13 to a second outer width 63, the new shape or the equivalent radius of the second deformation tool 10' is set. Opposite the representation in Fig. 5 For this purpose, the outer moldings 22, 22 'symmetrically to the longitudinal central axis 24 of the central forming web 21 have been adjusted to the outside.

Analogous to Fig. 6 show the Fig. 8 that, however, accordingly Fig. 7 set second deformation tool 10 'in its meantime by a stroke 64 from the in FIG. 7 shown position raised upward position. After deforming, the insert 5 'of the back region 4, which has a different format, and thus the now rounded back region 4' of the book cover 2 'has been shortened from the original width 62 to a projected width 62', inner edges of the counter-molding strips 20, 20 'likewise being shortened with outer edges of the insert 5 'complete. The stroke 64 of the second deformation tool 10 'is as for Fig. 6 calculated and set automatically.

Fig. 9 shows a perspective plan view of an inventive device 1 and two for different thickness classes of back regions 4 of the book covers 2 to be deformed, deformation tools 10, 10 '.

The device 1 is integrated by way of example into the ceiling feed 58 of a book production line 65 which is merely indicated here. In this illustration, the device 1 is accordingly through the ceiling feed 58 and the book covers 2 thereon largely obscured. Thereby are in Fig. 9 From the device 1 only the counter tool 19 with a suspension 66 in a machine frame 67 of the ceiling feed 58 and a recorded in its working position in the device 1 forming tool 10 can be seen.

Also integrated in the ceiling feed 58 are two preheating stations 68, 69, ie a separate preheating station 68, 69 for each deformation tool 10, 10 '. During operation of the device 1, one of the deformation tools 10, 10 'is always installed in the device 1. Corresponding Fig. 9 is the first deformation tool 10 in the device 1, while the second deformation tool 10 'is located in the preheating 69 and is just warmed up or waiting at its set temperature for its next use. It is thus in a rest position 7 '.

The pre-heating station 68 provided for the deformation tool 10 built into the device 1 is currently empty. Empty preheating stations 68, 69 can be set directly by the machine operator or via a controller to a lower temperature. It is monitored which Vorwärmstation 68, 69 is just empty and which deformation tool 10, 10 'is thus in the device 1 and whether this deformation tool 10, 10' is suitable for the current order. The preheating stations 68, 69 can be constructed in such a way that they are only suitable for receiving a specific deformation tool 10, 10 '. In the example of Fig. 9 In the empty preheating station 68, only the deformation tool 10 currently in its working position 7 would then fit into the empty preheating station 68.

Although a faster format change of the book covers 2 to be deformed can thus take place, a separate preheating station 68, 69 need not naturally be arranged for each deformation tool 10, 10 '. In general, it is sufficient if the respectively to be transported in its working position 7 deformation tool 10, 10 'from its rest position 7' in a preheating station 68, 69 can be removed.

For monitoring which preheating station 68, 69 is currently empty and which deformation tool 10, 10 'is thus located in the device 1 and whether this deformation tool 10, 10' is suitable for the current application, a corresponding sensor 70 can be arranged. For example, the sensor 70 may be located in at least one of the preheat stations 68, 69 (FIG. Fig. 9 ) and aligned with a deformation tool 10 'located in its rest position 7'. Alternatively, the sensor 70 can also be attached to a receiving element 14 for the tool bar 13 (FIG. Fig. 4 ) and be aligned with a deformation tool 10 located in its working position 7.

According to Fig. 1 and Fig. 9 For example, the deformation tools 10, 10 'each have an elevator hook 71 on an end face of their tool bar 13. This serves to lift or install a deformation tool 10, 10 'from or into its working position 7 or from or into its rest position 7' by means of a hoist, also not shown.

Finally, the ceiling feed 58, in addition to the two inner support elements 57, 57 'also two outer support elements 72, 72' for the book covers 2, an auxiliary device 73 for insertion of book covers 2 and fuse strips 74, 74 'for preventing the lifting of the book covers 2 at Deformation process on.

Claims (15)

Deformation tool for a device for rounding a back region (4) and for deforming in each case a book cover (2) extending horizontally on both sides of the back region (4) corresponding to the shape of the back respectively one after the other together with a book cover (2 ) a book block forming a book, characterized in that the deformation tool (10, 10 ') a fixed, convex Mittenformsteg (21) and two laterally adjoining thereto, according to the required rounding and width of the back portion (4) of the book cover (2) laterally adjustable, also convex, outer moldings (22, 22 '). Deformation tool according to Claim 1, characterized in that the deformation tool (10, 10 ') has a tool bar (13) which is positively or non-positively connected to the center forming web (21) and the outer moldings (22, 22'). Deformation tool according to claim 2, characterized in that the center forming web (21) is formed symmetrically and in a region facing the tool bar (13) on both sides in each case a recess (23, 23 ') for at least partially receiving the outer moldings (22, 22') having. Deformation tool according to one of claims 1 to 3, characterized in that the outer moldings (22, 22 ') symmetrically to a longitudinal central axis (24) of the central forming web (21) are adjustable. Device for deforming a back region (4) and in each case one lying on both sides of the back region (4) adjacent fold region (6, 6 ') lying outstretched Book cover (2) according to the shape of the back of each one a book post together with a book cover (2) forming a book block, characterized in that the device (1) at least one deformation tool (10, 10 ') according to one of claims 1 to 4 , Apparatus according to claim 5, characterized in that the at least one deformation tool (10, 10 ') with a on an outer side (18) of the back region (4) of the book covers (2) aligned counter-tool (19) is arranged cooperatively. Apparatus according to claim 6, characterized in that the counter tool (19) has two spaced apart, corresponding to the width of the back region (4) of the book cover (2) laterally adjustable Gegenformleisten (20, 20 '). Apparatus according to claim any one of claims 5 to 7, characterized in that at least two different deformation tools (10, 10 ') are arranged for different thickness classes of back regions (4) of the book covers (2) to be deformed. Apparatus according to claim 8, characterized in that it comprises a working position (7) for a first deformation tool (10) and in each case a rest position (7 ') for at least one second deformation tool (10'). Apparatus according to claim 9, characterized in that in its working position (7) located first deformation tool (10) on an inner side (17) of the back portion (4) of a book cover (2) aligned, the back region (4) of the book cover (2) between the two Gegenformleisten (20, 20 ') lifting and thereby forming a spine (28) of the book cover (2) is arranged. Apparatus according to claim 9 or 10, characterized in that at least one preheating station (68, 69) for the at least one in the rest position (7 ') located second deformation tool (10') is arranged. Apparatus according to claim 11, characterized in that a separate preheating station (68, 69) is arranged for each deformation tool (10, 10 '). Device according to one of claims 5 to 11, characterized in that at least one sensor (70) for identifying the deformation tools (10, 10 ') is arranged. Apparatus according to claim 13, characterized in that the at least one sensor (70) is arranged in at least one of the preheating stations (68, 69) and aligned with a deformation tool (10 ') located in its rest position (7') or on a receiving element (14 ) is arranged for the tool bar (13) and aligned with a deformation tool (10) located in its working position (7). Device according to one of claims 5 to 14, characterized in that the tool bar (13) of each in the working position (7) arranged deformation tool (10, 10 ') is coupled to an actuator (9), which laterally to an imaginary, vertical plane through a longitudinal central axis (15) of the tool in his working position (7) located tool bar (13) is arranged.

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