EP3235653B1 - Pre-heat station for a shaping tool for reforming book covers - Google Patents

Description

The invention relates to a Vorwärmstation for a deformation tool for deforming each of a both sides of a back region adjacent Falzbereichs lying outstretched book covers or a back region and each one on both sides of the back region adjacent Falzbereichs lying outstretched book covers according to the shape of the back of each one subsequently together with one of the book covers a book forming Book block, with a receiving space for the deformation tool, with at least one arranged in the region of the receiving space heating element and at least one associated with this temperature sensor. In addition, the invention relates to a device with such a preheating and with several different deformation tools.

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. When so-called hanging, ie when bonding the book cover with the book block, the edge-accurate joining for a harmonious connection is authoritative. Of importance for a high quality book is therefore the previous adaptation and possibly deforming the book cover in its middle area, ie in the back area, which receives 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 the respectively under heat deformation of the book cover and thus to the deformation tool used differ according to whether the finished book has a square or a rounded back and depending on the shape of the curve and the book thickness.

From the DE19853254 A1 is a device for rounding in the back area of an insert having book covers in a Bucheinhängemaschine known. In this device, the back region of the book cover is pressed by means of a 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. However, the newly used deformation tools still have no operating temperature and therefore must first be heated after installation.

The EP1350634 A2 discloses a deforming tool for the production of books with rounded back, which has a rectangular frame with a plurality of juxtaposed, adjustable with respect to the height of the frame and also on the side parts of the frame heated slats. However, the slats can only be heated with considerable inertia because of their mobility and the necessary height.

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. To form the back region and the fold areas of the book cover provided on both sides of the back region, the moldings together with their tool bar are dug out of a lowered position spaced from the book cover, which is initially located in an extended position, against opposing mold strips arranged above. To deform the book cover is a heat application on the deformation tool. 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. EP 2 325 020 A1 does not disclose a temperature sensor and sensor for detecting an identification feature.

In addition to a first deformation tool for book covers of books with straight back reveals the EP2923852 A2 also a second forming tool for book covers of books with round back. 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. Because the forming tools are provided with identical interfaces, they can be interchanged as needed, ie when changing jobs, from deforming book covers for books with straight backs to deforming book covers for books with round backs. However, no shaping of the book cover is disclosed with a heat input via the respective forming tool.

Thus, devices are known from the prior art, which heat the already incorporated in a device for deforming book covers deformation tool. In these devices, after the deformation tool has been changed, a certain amount of time is required to heat the newly assembled forming tool before the next book cover can be deformed. However, this affects the performance of the device.

In order to remedy this disadvantage, a preheating station equipped with a heating element and a temperature sensor connected thereto has become known to the Applicant, which was able to receive and preheat a single forming tool suitable for a subsequent production order. After installation of this preheated deformation tool in the device for deforming book covers the latter could advantageously begin immediately with the deformation of the first book cover belonging to the subsequent production order.

However, there was no possibility of checking whether there was any deformation tool in the preheating station or which one depending on the format of the book cover to be deformed different deformation tools it was. In the case of frequent job changes for the production of books and thus also book covers with a straight back or round back and with diverging book thickness, it has also been found that a preheating station which is only suitable for preheating a single forming tool also becomes a limiting element for the performance of the device for deforming Book covers or even the entire book production line can be.

The object of the invention is therefore to provide a preheating, which is adapted to accommodate more than a deformation tool for deforming book covers and preheat and to identify the respectively required deformation tool in the preheating station even with frequent job changes safely. Finally, a suitable device for deforming lying outstretched book covers with such a preheating station and with several different deformation tools to be specified.

This object is achieved by a preheating station according to claim 1. Advantageous embodiments of this Vorwärmstation are subject of the dependent claims.

The preheating station according to the invention has a control device connected to the at least one heating element and the at least one temperature sensor. In addition, the preheating station has several receiving locations for different deformation tools for deforming lying extended book covers. Finally, the preheating station has at least one sensor connected to the control device for detecting at least one identification feature of the deformation tools received in the preheating station.

Such a preheating station can accommodate and preheat a plurality of deformation tools and a maximum number of deformation tools corresponding to the number of mounting locations. Due to the arrangement of the at least one sensor for detecting at least one identification feature of the deformation tools received in the preheating station and its connection to the control device, a deformation tool required for the respective following order can be identified with certainty. Thereafter, this deformation tool is ready for use in a device for deforming in each case one lying on both sides of a back region adjacent Falzbereichs lying outstretched book covers with a straight back or a back region and each one on both sides of the back region adjacent Falzbereichs lying outstretched book covers with round back. This allows an error-free assignment of the deformation tools for each job and ultimately also an increase in power of Vorwärmstation and thus also the entire book production line.

According to one embodiment of the preheating station according to the invention, the at least one sensor is arranged at the preheating station or aligned therewith. With these alternative possibilities for arranging the at least one sensor, constructive free spaces are advantageously created which can be used in accordance with the concrete installation situation of the preheating station.

According to a further embodiment of the preheating station, a plurality of sensors are arranged and the number of sensors corresponds to the number of receiving locations. In this way, each sensor can be assigned a sensor so that each deformation tool located in the preheating station can be individually identified.

According to a further embodiment, the preheating station is rectangular in shape with two longitudinal sides and two end sides, wherein the at least one sensor is arranged on a first longitudinal side and designed as an optical sensor, and arranged on a second longitudinal side, opposite to the at least one sensor, a reflector is.

With such a design of the preheating and a corresponding arrangement and design of the at least one sensor and the reflector, a cost-effective, fehlerunanfällige solution can be realized.

According to a further embodiment of the preheating station, each receiving location is the same. As a result, each of the different, but a same tool bar having deformation tools can be advantageously positioned at any location. Thus, the equipping of the preheating with the various deformation tools can be done relatively quickly and easily.

According to an alternative embodiment, each receiving space for receiving a particular deformation tool is formed differently. This provides a possibility to design the heating power and / or the number of heating elements / temperature sensors individually to the respective forming tool. In this way, each deformation tool can be assigned its own coded recording space, 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 control device and can be assigned to the coded recording locations due to the existing order data of the follow-up orders. As a result, the preheating with the deformation tools therein respond even faster to an upcoming call in connection with a format change of book covers to be deformed, which can further increase the performance of the preheating and thus ultimately the entire book production line.

According to a further embodiment, for this purpose, each receiving space has at least one first connecting element, which is configured differently for receiving a specific one of the different deformation tools and / or is positioned differently. This can advantageously with a single Connection element can be defined, which deformation tool is placed on which pickup location of the preheating station. In this way, each deformation tool fits only to a specific location. When a job is changed, therefore, it is possible to identify in advance the receiving space on which the deformation tool required for the subsequent production job is located. Therefore, each receiving space can be heated individually according to its respective deformation tool and according to the upcoming production orders. As long as a receiving space is empty, it can be advantageously heated at a lower temperature. It can also deformation tools, which are used very rarely according to their thickness range, be kept at a lower temperature and preheated to just before use to the correct temperature.

In accordance with a further embodiment, each receiving location is provided with at least one first marking for a specific one of the different deformation tools, the markings of all receiving locations differing from one another. With this alternative embodiment, in each case the correct receiving space for placing each individual deformation tool is marked. If the deformation tools are therefore positioned on the correct location, it is also defined which deformation tool is placed on which location of the preheating station.

Finally, according to the invention, the object is achieved by means of a device for deforming a book area or a back area extending horizontally on both sides of a back area and a book area lying on either side of the back area with a preheating station described above and with a plurality of different deformation tools, each of which at least one Identification feature for detecting the deformation tool in a preheating station.

The combinatorial advantages of a sensor designed for a plurality of deformation tools and having at least one sensor connected to the control device for detecting at least one identification feature of the deformation tools received in the preheating station and a plurality of deformation tools respectively provided with a corresponding identification feature can be optimally utilized with such a device. In addition, deformation tools are thus made available which can be detected in a simple and cost-effective manner in such a preheating station of the device.

In one embodiment of the device, the deformation tool has a tool bar for receiving in the preheating station and the identification feature is arranged on or in the tool bar. This results in a defined position of the identification feature and thus ensures reliable detection of the deformation tool.

In a further embodiment of the device, the identification feature is designed as a number of closable recesses in the tool bar. Thus, the respective tool bar can be advantageous already provided in its manufacture with the designed as a number of recesses identification feature. As a result, on the one hand, a cost-effective and permanently usable identification feature is used, which can also be inexpensively attached to the deformation tool.

According to a further embodiment of the device, the deformation tool has at least one second connecting element, which is advantageously formed corresponding to only one of a plurality of different receiving locations of the preheating station.

According to an alternative embodiment of the device, the deformation tool has at least one second marking, which is assigned to only one of a plurality of different receiving locations of the preheating station.

In order to identify the different deformation tools, in one embodiment of this device, these deformation tools each have a tool bar for mounting in the device and in the preheating station. In addition, the preheating is rectangular with two longitudinal sides and two end faces, wherein on a first longitudinal side of the preheating a number of optical sensors and on a second longitudinal side, opposite to the optical sensors, a reflector is arranged. Finally, the tool bars each have a number of identifiable formed, closable recesses, wherein the number of closable recesses is at least as large as the number of deformation tools used in the device and the number of optical sensors.

Thus, the device for receiving the required number of deformation tools with any number of juxtaposed or stacked preheat stations can be equipped. In addition, it can not only be identified via the at least one sensor cooperating with the preheating station which deformation tools are currently located in the preheating station but, conversely, are also closed to the deformation tool currently located in the apparatus. By this identification of all the deformation tools of the device, it is possible to monitor the use of the deformation tools in the device and to prevent incorrect settings.

Fig. 1

eine räumliche Teil-Darstellung einer erfindungsgemässen Vorrichtung zum Verformen jeweils eines beidseitig eines Rückenbereichs angrenzenden Falzbereichs liegend ausgestreckter Buchdecken, mit einem ersten, mit einem Identifikationselement ausgestatteten Verformungswerkzeug für Buchdecken mit geradem Rücken sowie mit einem beispielhaften Stellantrieb und dessen Verbindungselementen zum Verformungswerkzeug,

Fig. 2

eine räumliche Darstellung eines zweiten, mit einem Identifikationselement ausgestatteten und zum Verformen eines Rückenbereichs und jeweils eines beidseitig des Rückenbereichs angrenzenden Falzbereichs liegend ausgestreckter Buchdecken dienenden Verformungswerkzeugs der erfindungsgemässen Vorrichtung, wobei der Stellantrieb und die Verbindungselemente weggelassen sind,

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

eine schematische Darstellung eines Ausschnitts aus der in Fig. 1 gezeigten Vorrichtung, jedoch mit dem in Figur 2 gezeigten Verformungswerkzeug für Buchdecken mit rundem Rücken, dem Gegenwerkzeug und einer zur Verformung bereitliegenden Buchdecke,

Fig. 6

eine Darstellung entsprechend Fig. 5, jedoch mit einer inzwischen gerundeten Buchdecke,

Fig. 7

eine seitliche Draufsicht auf eine erfindungsgemässe Vorwärmstation mit zwei Aufnahmeplätzen für Verformungswerkzeuge, wobei der erste Aufnahmeplatz mit einem Verformungswerkzeug für Buchdecken mit geradem Rücken belegt ist, während der zweite Aufnahmeplatz nicht belegt ist,

Fig. 8

eine Draufsicht von seitlich vorn auf eine erfindungsgemässe Vorwärmstation mit drei Aufnahmeplätzen, welche jeweils mit einem unterschiedlichen Verformungswerkzeug für Buchdecken mit rundem Rücken belegt sind, wobei die Verformungswerkzeuge zum Verformen von Buchdecken für Buchblocks mit unterschiedlicher Dicke geeignet sind.

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

Fig. 1

a partial view of a device according to the invention for deforming in each case an adjacent on both sides of a back region Falzbereichs lying outstretched book covers, with a first, equipped with an identification element deformation tool for book covers with straight spine and with an exemplary actuator and its connecting elements to the forming tool,

Fig. 2

a spatial representation of a second, equipped with an identification element and for deforming a back region and in each case on both sides of the back region adjacent Falzbereichs lying stretched out book cover serving deformation tool of the inventive device, wherein the actuator and the connecting elements are omitted,

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 schematic representation of a section of the in Fig. 1 shown device, but with the in FIG. 2 shown forming tool for book covers with round back, the counter tool and a ready for deformation book cover,

Fig. 6

a representation accordingly Fig. 5 , but with a book cover now rounded,

Fig. 7

a lateral plan view of a preheating station according to the invention with two receiving stations for deformation tools, wherein the first receiving station is occupied with a deformation tool for book covers with a straight back, while the second receiving space is not occupied,

Fig. 8

a plan view of the front side of a preheating station according to the invention with three receiving stations, which are each covered with a different deformation tool for book covers with a round back, wherein the deformation tools are suitable for deforming book covers for book blocks with different thickness.

The Fig. 1 shows a partial representation of an inventive device 1 for deforming lying outstretched book covers 2 ( Fig. 5 ), which are combined together, each with a straight back, not shown book block to a book, also not shown. Such a book cover 2 consists essentially of two side book covers 3, 3 'and the back of the book block receiving, referred to as the back region 4 middle part. The back region 4 may be provided on its inner side with a reinforcing, for example consisting of cardboard or waste paper insert 5. The book cover 2 has on both sides of the back region 4 in each case 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'.

As in Fig. 1 1, the device 1 is equipped with a first deformation tool 8, which is located in a working position 7 and also brought from a lowered into an excavated position, which is coupled to an actuator 9 embodied as a drive motor. As an actuator, of course, for example, spindle or worm drives can be used.

The Fig. 2 shows a second deformation tool 10 of the device 1, which is then coupled to the same actuator 9 or alternatively with another actuator, not shown, when located in the device 1, horizontally stretched book cover 2 according to a current production order instead of a book cover. 2 'with a straight back region 4' ( Fig. 4 ) in a book cover 2 "with a round back area 4" ( Fig. 6 ) is to be deformed. When deforming with the first and the second deformation tool 8, 10, in each case the two fold areas 6, 6 'and, in the case of a book cover 2 provided for a round book block with the second deformation tool 10, also its back area 4 are deformed from the extended position such that the deformed book cover 2 ', 2 "is then suitable to be connected to a book block to a book.

As in Fig. 1 also shown, the first deformation tool 8 has two spaced apart, perpendicular and parallel to the back region 4 of the book cover 2 to be deformed aligned moldings 11, 11 '. The moldings 11, 11 'have at their lower end in each case a baseboard 12, 12', which in turn rest on a common tool bar 13 laterally displaceable and are connected to this non-positively or positively. In this way, the moldings 11, 11 'according to the required width of the back portion 4 of the book cover 2 are adjusted against each other.

The moldings 11, 11 '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 moldings 11, 11 ', so that a good heat transfer into the moldings 11, 11' and thus to the book cover 2 to be deformed is ensured.

The tool bar 13 has approximately the length of the moldings 11, 11 'and the baseboards 12, 12' and is wider than the required for the largest to be deformed with the device 1 book cover 2 distance of the moldings 11, 11 '. The tool bar 13 located in its working position 7 like the first forming tool 8 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 moldings 11, 11 'are arranged symmetrically to the longitudinal central axis 15 of the tool bar 13 and formed symmetrically to this longitudinal central axis 15 adjustable.

In the tool bar 13, an identification feature 62 is arranged and formed in this embodiment as a number of the tool bar 13 penetrating recesses 62 ', one of which is closed with a closure member 63 formed as a stopper or lid. In principle, can Of course, any type of mechanical components but also, for example, with cameras detectable images, numbering, barcodes, barcodes or RFID chips as identification feature 62 are used. Of course, the identification feature 62 can also be mounted on the tool bar 13, but also in or on other components of the respective deformation tool 8, 10, instead of in the tool bar 13. As described below, the identification feature 62 serves to detect the respective deformation tool 8, 10 in a preheating station 64 belonging to the device 1 (FIG. Fig. 7 . Fig. 8 ).

The at least approximately over the height of a book cover 2 extending first deformation tool 8 is in its lowered position initially below and spaced from one of the book cover 2 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 deformed book covers 2 ', 2 "serving, not shown hanging machine runs.

The device 1 has, apart from the above located in each case in the working position 7 and directed to an inner side 17 of the back portion 4 of a book cover 2 to deform deforming tool 8, 10 also above the forming tool 8, 10 arranged, cooperating with this and on an outside 18 of the back portion 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. 4 ). 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 has a fixed, 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 region 4 of the book cover 2 to be deformed laterally adjustable and also aligned in the direction of the counter tool 19, convex outer moldings 22, 22 'on. The center forming web 21 is formed symmetrically and, in a region facing the tool bar 13, has 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.

Analogous to the moldings 11, 11 'of the first deformation tool 8 and the outer moldings 22, 22' of the second deformation tool 10 are provided on its underside, for example, with permanent magnets, not shown, or with switchable and disconnectable electromagnets which on the top of the iron-containing tool bar thirteenth generate relatively large attractions. 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 to these moldings 22, 22' and thus also to the book cover 2 to be deformed is ensured. In addition to the attractive forces described, 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 in contact with the tool bar 13. The adjustment of the two end-side guides 25, 25 'Can be sized so that they withstand thermal expansion of several hundred degrees Celsius without interference and a smooth movement of the outer moldings 22, 22' not counteract. Like the tool bar 13 of the first deformation tool 8, the tool bar 13 of the second deformation tool 10 also has an identification feature 62 which is formed as a number of recesses 62 'penetrating the tool bars 13, one of which is closed by a closure element 63 formed, for example, as a stopper or lid can be.

In order to deform the fold areas 6, 6 'of the book cover 2 provided on both sides of the back region 4, the respective deformation tool 8, 10 together with the tool bar 13 is initially lifted against the above-arranged counter tool 19 or its counterform moldings 20, 20' and thereby with the moldings 11 , 11 'or with the center forming web 21 and the outer moldings 22, 22' a back web 28 of the book cover 2 ', 2 "is formed ( Fig. 4 . Fig. 6 ). The curves of the center forming web 21 and the outer moldings 22, 22 'of the second deformation tool 10 additionally provide for the rounding of the back region 4 "of the book cover 2" corresponding to the rounding of the back of an associated book block.

Fig. 3 shows a partial representation of the inventive device 1 with removed deformation tool 8, 10. This serves as a management level smooth support 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 8, 10 , As can be seen, the tool bar 13 also serves to accommodate rotary bodies, for example, vertical axes of rotation 30, 30 'drivable discs 31, 31', which are mounted in spaced along the tool bar 13 recesses 32, 32 'of the tool bar. The disks 31, 31 'have on their side facing the working tool 7 in the deformation tool 8, 10 aligned side relative 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 so that they do not touch the deformation tool 8, 10 located in the working position 7. The deformation tools 8, 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 baseboard 12 has corresponding, but here concealed recesses 35, 35 ', in which in each case one of the drivers 33, 33' engages.

So that an optimally effective, mutually oppositely directed side stroke of the skirting boards 12, 12 'associated moldings 11, 11' of the first deformation tool 8 and the outer moldings 22, 22 'of the second deformation tool 10 can be achieved, the drivers 33, 34, 33 ', 34' of a disc 31, 31 'in a starting 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. This ensures a uniform change in the distance between the moldings 11, 11 'of the first deformation tool 8 or between the outer moldings 22, 22' of the second deformation tool 10. 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 inwards or outwards and reduce or enlarge the distance between the moldings 11, 11' of the first deformation tool 8 or between them outer moldings 22, 22 'of the second deformation tool 10.

Thus, the moldings 11, 11 'of the first deformation tool 8 and the outer moldings 22, 22' of the second deformation tool 10 when rotating the discs 31, 31 'not mutually shift in their longitudinal direction, is between the tool bar 13 and the respectively in Working position 7 located deformation tool 8, 10 a directed transversely 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 8, 10 has. In this way, it is ensured that the moldings 11, 11 'and the outer moldings 22, 22' exclusively transverse to the longitudinal extension of the respective forming tool 8, 10 are adjustable.

Fig. 4 shows a cross section of the equipped with a first deformation tool 8 and a counter tool 19 device 1 and an already deformed book cover 2 'with a straight back portion 4' and with the two deformed fold areas 6, 6 '. For reasons of clarity, the tool bar 13 penetrating here, the identification feature 62 forming recesses 62 'are not shown here. However, the arrangement of the deformation tool 8 also connected to the frame 41 and the sliding device 38 connected to the deformation tool 8 via the slide 37 are shown.

The drive connected to the discs 31, 31 ', flat downwardly extending slide 37 has a second guide assembly 43 ( 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 provided a bottom-up reaching slot-like opening 46 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 8 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 8 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 8 (cf., the stroke 61 indicated by a double arrow), the back region 4 'of the book cover 2' with the two spaced apart moldings 11, 11 'between the opposing counterform moldings 20, 20' of the counter tool 19 becomes a back web 28 lifted upwards and deformed under the influence of heat, wherein the book cover 3, 3 'rest on inner support elements 57, 57' of a ceiling feed not shown. 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 deformation tool 8 holding at operating temperature heat over the tool bar 13, the baseboards 12, 12 'and finally on the moldings 11, 11' is transferred to the deformed back portion 4 'of the book cover 2'.

For precise positioning of the deformation tool 8, 10, for example, a centering device 58 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 of the device 1 is at 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 Gegenwerkzeugs 19 and on inner support elements 57, 57' of a ceiling feed not shown for deformation ready book cover 2. The second deformation tool 10 is still in its lowered position, ie below the support plane 16 and is thus spaced from the book cover 2. In this position, the second deformation tool 10 is set to a width 59 of the insert 5 of the back portion 4 of the book cover 2. 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 transferred to the second deformation tool 10 as described above for lifting the first deformation tool 8. To deforming the insert 5 and thus the now rounded back portion 4 "of the book cover 2" from its original width 59 to a projected width 59 'a back web 28 has shortened forming, with inner edges of the Gegenformleisten 20, 20' with outer edges of the insert 5 complete , The projected width 59 'of the insert 5 thus corresponds to a thickness of this book cover 2 "belonging, rounded and pressed book block.

The Fig. 7 shows a lateral plan view of a first embodiment of the invention Vorwärmstation 64 with two trained example as heating bar receiving stations 65 for each one for deforming a book cover 2 trained first deformation tool 8 for book covers 2 'with straight back area 4'. Currently, only the first receiving station 65 of this preheating station 64 is occupied by a shaping tool 8, while the second receiving station 65 is empty.

The preheating station 64 is rectangular and has two longitudinal sides 66, 66 'and two end faces 67, 67' and a support 68 for connecting the preheating station 64 with the in Fig. 1 shown device 1 for deforming lying outstretched book covers 2. Depending on the specific installation situation and the space resulting therefrom, the preheating station 64 can be arranged at arbitrary locations of the device 1, for example in the vicinity of a ceiling feed, not shown. Likewise, an arrangement of the preheating 64 outside the device 1 is conceivable, wherein the distance should not be chosen so large that the temperature of the preheated deformation tool 8 falls below the time required for the deformation of book cover 2 operating temperature due to the time required for transport.

The carrier 68 serves both for fastening of the two receiving places 65 and a fender 69 enclosing these downwards and laterally to avoid burns on the operating personnel. In the area of the receiving places 65 is one each attached to a at a first end face 67 of the Vorwärmstation 64 Temperature sensor 70 connected and arranged, for example, designed as a heating element heating element 71. Of course, more than one temperature sensor 70 can be used per receiving space 65 also several heating elements 71 or per heating element 71. The receiving places 65 each have a centering element 72 on the first end face 67 and a centering pin 73 on a second end face 67 'each with a holder 74 and fastening elements 75 for connecting the centering pin 73 to the receiving space 65.

Two sensors 76 are arranged on a first longitudinal side 66 of the preheating station 64, so that the number of sensors 76 corresponds to the number of receiving places 65. The sensors 76 are fastened to the mudguard 69 by means of a common, first retaining element 77. On the opposite second longitudinal side 66 'of the preheating 64 a cooperating with the two sensors 76 reflector 78 is arranged and fixed by means of a second holding member 79 on the fender 69. Of course, the sensors 76 and the reflector 78 may also be mounted outside the preheat station 64 and aligned with the preheat station 64. In addition, the use of other sensors is possible, which do without reflector. Finally, a single sensor for a plurality of receiving places 65 or deformation tools 8, 10 accommodated therein can also be used.

The preheating station 64 has a control device 80 or is connected to such via connecting lines 81 for the transmission of signals and for the power supply. Such connecting lines 81 are arranged here, for example, between the control device 80 and the sensors 76 and between the control device 80 and the heating elements 71 and the temperature sensors 70.

While the one deformation tool 8 is in a rest position 7 'in the preheat station 64 ( Fig. 7 ), the other forming tool 8 belonging to the free receiving space 65 is arranged in the device 1 and is thus located in its in Fig. 1 and in Fig. 4 shown working position 7.

In contrast, the shows Fig. 8 2 shows a second exemplary embodiment of an essentially analog preheating station 64, but with three receiving stations 65 for a respective second forming tool 10 for deforming book covers 2, which after deformation have a round back region 4 "The three receiving sites 65 of this preheating station 64 are each provided with a Deformation tool 10 is occupied, wherein these deformation tools 10 each can deform a certain different thickness class of the back portion 4 of book covers 2.

Of course, first and second deformation tools 8, 10 can also be accommodated in a preheating station 64, which are also suitable for different thickness classes.

For installation of a deformation tool 8, 10 in the preheating station 64 or for its removal from the preheating station 64, the deformation tools 8, 10 at one end of their tool bar 13 each have a transport hook 82 which can be enclosed with a special key, not shown, and with the the hot deformation tool 8, 10 can be placed by means of a hoist, also not shown on the respective receiving space 65 of the preheating station 64 or removed from this. The assembly or disassembly of a deformation tool 8, 10 in or out of the device 1 for deforming stretched out book covers 2 can be done with the same hoist.

When installing a deformation tool 8, 10 in the preheating station 64, the centering element 72 together with the opposite, the bore 56 (FIG. Fig. 2 ) of the deformation tool 8, 10 receiving centering pin 73 for a secure recording of the deformation tool 8, 10th

As already described above, the tool bar 13 of the deformation tools 8, 10 through recesses 62 ', which can penetrate a beam 83 of the sensors 76 without obstruction. In each case one of the recesses 62 'each Deformation tool 8, 10 is provided with a closure element 63, so that this recess 62 'can no longer be penetrated by the beam 83 of the sensor 76 aligned thereon. With the aid of such or also by means of another suitable identification feature 62, it can thus be determined with the control device 80 which deformation tool 8, 10 is installed in the preheating station 64. As soon as a deformation tool 8, 10 has been removed, this is likewise recognized, since the beam 83 of the respective sensor 76 can penetrate the space above the then empty receiving space 65 without obstacles and is therefore reflected by the reflector 78, so that this is checked in a simple manner can, which deformation tools 8, 10 are located in the preheating station 64.

In this case, each receiving space 65 for receiving the same trained tool bar 13 carried, different deformation tools 8, 10 are also the same. In this cost-effective solution, however, the sensors 76 can detect only after the removal of a deformation tool 8, 10 from the preheating station 64, whether the right or the wrong deformation tool 8, 10 has been removed.

Alternatively, each receiving space 65 for receiving a particular deformation tool 8, 10 is formed differently. For this purpose, each receiving place 65 has at least one first connecting element 84 (FIG. Fig. 7 ), which is designed differently for receiving a specific one of the different deformation tools 8, 10 and / or differently positioned. Accordingly, the deformation tool 8, 10 has at least one second connection element 85 (FIG. Fig. 6 ), which is designed to correspond only to one of a plurality of different receiving locations 65 of the preheating station 64. For this purpose, the first connecting element 84 is formed, for example, as a pin and the second connecting element 85, for example, as a recess receiving the pin in the tool bar 13. With two such cooperating connecting elements 84, 85 For example, the deformation tool 8, 10 required in each case for the subsequent work order for deforming book covers 2 can be reliably identified even before it is removed from the preheating station 64.

Alternatively or as in Fig. 7 illustrated in addition to the solution described above, each receiving space 65 may be provided with at least one first mark 86 for a particular one of the different deformation tools 8, 10, wherein the first markers 86 of all receiving places 65 differ from each other. Accordingly, the deformation tool 8, 10 has at least one second marking 87 (FIG. Fig. 1 to Fig. 3 ), which is assigned only to a receiving station 65 of the preheating station 64. With this cost-effective solution can be achieved in accordance with the markings 86, 87 successful edition of the deformation tools 8, 10 also a prior and reliable identification of each required for the subsequent order forming tool 8.10. The markings 86, 87 may be formed as letters as in the embodiments shown. Of course, other types of marking are possible, such as numbers or color marks.

The temperature of the preheated deformation tools 8, 10 may be between 20 ° C and 300 ° C depending on the materials used to cover the book covers 2. For example, relatively low temperatures are sufficient for plastic or cellophane cover materials. At very high cycle rates, the exposure time of the deformation tools 8, 10 on the book covers 2 is lower, so that can be driven at high temperatures. If you drive at a reduced speed, the exposure time of the respective deformation tool 8, 10 increases on the book cover 2 and its temperature can be reduced. By means of the control device 80, the temperature of the respectively used deformation tools 8, 10 can be set as desired, depending on the order (production speed, reference material of the book cover, etc.).

Claims (14)

1. Preheating unit for a forming tool (8, 10) for forming a folding area (6, 6') respectively adjoining on both sides of a spine area (4) of book covers (2) lying stretched out or a spine area (4) and a folding area (6, 6') respectively adjoining on both sides of book covers (2) lying stretched out, with a working position (65) for the forming tool (8, 10), with at least one heating element (71) arranged in the area of the working position (65) and with at least one temperature sensor (70) connected to the at least one heating element (71), wherein the preheating unit (64)

   

   has a control unit (80) connected to the at least one heating element (71) and to the at least one temperature sensor (70),

   

   possesses several working positions (65) for different forming tools (8, 10) for forming book covers (2) lying stretched out, and

   

   has at least one sensor (76) connected to the control unit (80) for detection of at least one identification feature (62) of the forming tools (8, 10) accommodated in the preheating unit (64).
2. Preheating unit according to claim 1, characterised in that the at least one sensor (76) is arranged on the preheating unit (64) or is directed to the preheating unit (64).
3. Preheating unit according to claim 1 or 2, characterised in that several sensors (76) are arranged and the number of sensors (76) corresponds to the number of the working positions (65).
4. Preheating unit according to one of the claims 1 to 3, characterised in that the preheating unit (64) is designed to be rectangular with two longitudinal sides (66, 66') and two face sides (67, 67'), that at least one sensor (76) is arranged on a first longitudinal side (66) and is designed as an optical sensor and that a reflector (78) is arranged on a second longitudinal side (66') on the opposite side to the at least one sensor (76).
5. Preheating unit according to one of the claims 1 to 4, characterised in that each working position (65) is designed identically.
6. Preheating unit according to one of the claims 1 to 4 characterised in that each working position (65) is designed differently to accommodate a certain forming tool (8, 10).
7. Preheating unit according to claim 6, characterised in that each working position (65) has at least a first coupling component (84), which is differently designed and/or differently positioned for accommodating a certain forming tool (8, 10) of the different forming tools (8, 10).
8. Preheating unit according to claim 6, characterised in that each working position (65) is provided with at least a first marking (86) for a certain forming tool (8, 10) of the different forming tools (8, 10), in which the markings (86) of all the working positions (65) are different from one another.
9. Device for forming a folding area (6, 6') respectively adjoining on both sides of a spine area (4) of book covers (2) lying outstretched or of a spine area (4) and a folding area (6, 6') respectively adjoining on both sides of the spine area (4) of book covers (2) lying outstretched, with a preheating unit (64) in accordance with one of claims 1 to 8 and with several different forming tools (8, 10), which in each case have at least one identification feature (62) for detecting the forming tool (8, 10) in the preheating unit (64).
10. Device according to claim 9, characterised in that the forming tool (8, 10) has a tool beam (13) for accommodation in the preheating unit (64) and that the identification feature (62) is arranged on or in the tool beam (13).
11. Device according to claim 10, characterised in that the identification feature (62) is designed as a number of lockable recesses (62') in the tool beam (13).
12. Device according to one of the claims 9 to 11, characterised in that the forming tool (8, 10) has at least a second coupling component (85), which is designed to correspond with only one working position (65) of the preheating unit (64).
13. Device according to one of the claims 9 to 11, characterised in that the forming tool (8, 10) has at least a second mark (87), which is related to only one working position (65) of the preheating unit (64).
14. Device according to one of the claims 9 to 13, characterised in that for the identification of the different forming tools (8, 10)

    

    the forming tools (3, 10) in each case have a tool beam (13) for accommodation in the device (1) and in the preheating unit (64),

    

    the preheating unit (64) is designed rectangular with two longitudinal sides (66, 66') and two face sides (67, 67'), in which a number of optical sensors (76) is arranged on a first longitudinal side (66) of the preheating unit (64) and a reflector (78) is arranged on a second longitudinal side (66') lying opposite the optical sensors (76),

    

    the tool beams (13) have in each case a number of lockable recesses (62') designed as identification features (62), in which the number of lockable recesses (62') is at least as large as the number of forming tools (8, 10) used in the device (1) and is at least as large as the number of optical sensors (76).

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