EP2923852B1 - Device for forming of book covers - Google Patents

Description

The present invention relates to a device for shaping the back region and / or the adjoining fold regions of book covers according to the preamble of claim 1.

For machine production of books book making machines are known, which comprise devices for transport and devices for processing the supplied book blocks, devices for transport and devices for processing the supplied book covers and devices for joining a book block with an associated book cover, the so-called. Such book making machines are designed so that both the book blocks, the book covers and the books are always aligned symmetrically to the center plane of the book blocks, which divides the book block at half block thickness. Before hanging, the book covers are preformed with respect to the desired shape of the spine and adjoining seam areas. For this purpose, devices are known which lift the back region of the extended book cover against a pair of folding areas of the book cover down-holding rails. These rails are designed as hold-down rails flat or wedge-shaped as folded form rails with a rounded shape range and are positioned depending on the width of the spine, including automated adjustment drives are provided. The back of the book cover aushebende fitting corresponds in its width and contour of the spine.

For the preforming of book covers for books with straight back moldings are known, which consist essentially of a base plate and a pair of parallel corresponding to the back width spaced rails. The rails are screwed in slots with the base plate, so that the fitting of the width of the book spine can be adjusted. For this purpose, the fitting is removed from the device for reasons of accessibility, the rails are fastened manually to the desired position and the fitting is subsequently inserted back into the device. As a result, the effort to set the device to the desired spine width is considerable, and adjustments to the adjustment require machine downtime and concomitant production stoppage.

To simplify this adjustment of the fitting for books with a straight back suggests EP 2 325 020 A1 an adjusting mechanism, which couples the two rails that lift out the back region by drivers in such a way that they are forcibly moved in parallel and symmetrically to the above-mentioned center plane of the book blocks. If the book block is not symmetrically hung in the book cover to later in the book other elements such as, for example, a package for plastic compact discs, so-called Jewelcases to complement the book cover must be moved between the preforming and hanging transversely to the transport direction. Due to the fold areas and the preforming the book cover is weakened but just in the direction of the spine width, so that moving transversely to the transport direction and thus in the direction of the spine width requires a reduced production speed and is a source of disturbances and reduced production quality. A single form element with adjustment is provided.

In the production of books with rounded spine shaped pieces are required, which correspond not only in their width but also in the curvature of their book cover surface facing the shape of the book to be produced. The amount of different back widths and curvatures leads to a large number of required fittings and the corresponding effort when equipping. In order to reduce the variety of fittings is often tolerated a small deviation, in particular in the width of the ideal shape and thereby tolerated quality losses are accepted.

The EP 1 350 634 B1 proposes a fitting for the production of books with a rounded back, which includes a closed frame and a plurality of height adjustable mounted in this context, side by side slats. The slats have individually shaped arcuate slots, so that the entire disc pack is threaded with these slots on bolts, so that the lamellae are moved differently in height by moving these bolts in the longitudinal direction of the fitting according to the arc shape of the slots, so that the contour of the fitting can represent different by step profiles approximated radii. The quality of the forming surface is largely determined by the thickness of the slats. The disadvantage here is the required space for the frame surrounding the plate package and the required fixation of the slats after the adjustment process by additional means. In addition, due to the coupled adjustment of the slats, such a shaped piece can only produce one contour depending on the width of the back. Should be different for the same block thickness strongly curved spines are generated, several such fittings are required, which differ in the course of the grooves in the slats.

The object of the present invention is thus to provide a device of simple construction which, with a high degree of automation, makes it possible to preform book covers with backs of different geometries. According to the invention, this object is achieved by the device for preforming the book cover in the back region and / or the adjacent rabbet areas provides a molding which comprises a base member and a plurality of this base element and independently adjustable mold elements, each of these mold elements each having a separate with him associated adjusting drive is assigned. The advantage achieved is that in a simple way a single fitting allows a much greater variety of generated back geometries, especially in terms of back width, asymmetry and / or curvature, as with the known devices, the adjustment is motorized and thus automated. In this way, the effort required for the setup and the number of required replacement parts can be significantly reduced.

In a preferred embodiment of the invention, the fitting comprises adjacent to the base member two adjustable longitudinally extending in the longitudinal direction parallel to the back portion of the book cover aushebende rails, which are designed to be adjustable in a plane parallel to the stretched position of the book cover substantially perpendicular to the longitudinal orientation of the rails. Thus, in the absence of lateral displacement of the book covers between Deckenvorformen and book attachments is possible to produce both symmetrically and asymmetrically hinged books of different back widths without manual setup of the device for ceiling preforming a book production machine and in particular without change parts. In a second preferred embodiment of the invention, the shaped piece comprises, in addition to the base element, at least two adjustable form elements which can be adjusted substantially perpendicular to the plane defined by the stretched book cover relative to the base element. In this way, the envelope of the fitting can be adjusted automatically to different curvatures of the book cover.

Contrary to the common doctrine book cover with rounded back can be produced without loss of quality, if the back area of the book cover does not rest during blanket preforming over the entire surface of the fitting. In a preferred embodiment Therefore, according to the second embodiment, the molding comprises portions of the surface enveloped by the back portion of the book cover during blanket preforming, which remain spaced from the back portion of the book cover during blanket preforming. Thus, it is possible with a simply constructed and consisting of a few components fitting, both the width and the curvature of the back region to vary independently, so that any rounded back areas can be generated without the use of removable parts.

Preferably, each of the form elements is guided in parallel adjustable by levers. This simple design in the manner of a four-bar linkage allows a compact yet robust design.

In an alternative embodiment, the adjustment of the form elements is achieved by link guides. This offers the advantage that the scenes can be designed freely and so the transfer functions between adjustment and adjustment of each mold element can be optimized, for example, to produce a particularly accurate adjustment in frequently used areas.

Advantageously, the adjusting drives for the mold elements are controllable and connected to the control of the device, so that the setting of the device can be done automatically based on the control of available product data. Furthermore, it is advantageous to perform the adjustment stationary, since so reduces the moving mass and the electrical wiring connections of the adjustment drives are less loaded and the electrical installation can be kept simple.

In a further advantageous embodiment, each of the mold elements is permanently connected to drive in each case with the associated adjusting drive. In this way, even during the movement of the shaped piece, in particular during the return stroke in the rest position, this can already be set to the book cover to be formed, which is particularly important in the production of very small runs. Also can be done in this way the fixing of the mold elements by the adjustment, so that no further facilities such as. Clamps are required and therefore the construction can be kept simple, space saving and easy.

In order to produce the required balance between the form element and the respective adjustment drive during the movement of the fitting, a roller running in a slot during the movement of the fitting is proposed. In this way, a high precision in the transmission of movement with little wear is possible.

Fig. 1

Einen Ausschnitt der Vorrichtung zum formen von Buchdecken in perspektivischer Darstellung;

Fig. 2

ein Formstück für Buchdecken mit geradem Rückenbereich in perspektivischer Darstellung;

Fig. 3

ein Formstück für Buchdecken mit gerundetem Rückenbereich in perspektivischer Darstellung und;

Fig. 4

einen Querschnitt durch einen Teilbereich der Vorrichtung während des Formens einer Buchdecke.

An exemplary embodiment of the device according to the invention will be described in detail with reference to FIGS. Show it:

Fig. 1

A section of the device for forming book covers in perspective view;

Fig. 2

a fitting for book covers with straight back area in perspective view;

Fig. 3

a fitting for book covers with rounded back area in perspective and;

Fig. 4

a cross-section through a portion of the device during the molding of a book cover.

The book making machine comprises a transport device for transporting the undeformed book covers from a provision position into a device 1 for forming the back region 30 and the adjacent fold regions 31 of the book cover 29 by lifting the back region 30 from the extended position in the lifting direction A, perpendicular to the through the book cover 29 spanned level, and for further transport from this device 1 to provide the preformed book cover 29 for joining with the book block. FIG. 1 shows as an essential element of this device 1 a fitting 2.1 for preforming book covers with a straight back. The fitting 2.1 is fixed in a receptacle which is displaceably mounted in the lifting direction A. The receptacle is driven such that the shaped piece 2.1 coming from a lower starting position, in which the back region forming rail pair 4, consisting of the rails 4.1 and 4.2 is spaced to a book cover 29 located in the device 1, the support plane of the book cover 29 pierces while raising the back portion 30 of the book cover 29 from the extended position. In order not to raise the book cover 29 in its entirety, the device 1 optionally includes a pair not shown in the back near the top of the ceiling panels 33 positioned hold-down rails or in FIG. 4 These hold-down or folding rails 23 are adjustable via a suitable device, likewise not shown, with respect to the spine width of the book cover 29, this adjusting device having controllable drives connected to the machine control.

The parallel in the longitudinal direction of the back portion 30 of the book cover 29 rails 4.1 and 4.2 are each displaceable in linear guides 5 in the extension direction of the spine width stored in the base member 3, with which they form the fitting 2.1. The device 1 provides for each of the two rails 4.1 and 4.2 in each case an adjusting before, which is an adjustment 10.1 and 10.2 and one via an angle gear 9 with this adjustment 10.1. or 10.2 drive-connected spindle 8 includes. The adjusting drives 10.1 and 10.2 are independently fixed in place by the lifting movement of the shaped piece 2.1, so that the mass moved during each shaping operation is kept low and results in a simple, mechanically slightly loaded electrical installation. The spindles 8 move in the ceiling transport direction T each one in the lifting direction A oriented slot 6, in which a roller 7 runs, on the one hand to transfer the displacement of the elongated hole 6 via more links on the rail 4.1 and 4.2 and on the other hand, the relative movement within the adjustment in To allow excavation A direction. The rollers 7 are each over other links with the in FIG. 2 shown push rods 11.1 and 11.2 respectively, wherein it is in each case a mounted in an upwardly open slot pin allows to remove the fitting 2.1 in a simple manner upwards from the device 1, for example. Against a described in a second embodiment fitting 2.2 to swap for round backs.

The adjusting drives 10.1 and 10.2 are connected to a control, not shown, of the book production machine, such that an automated adjustment based on the control of available production parameters is possible.

Within the fitting 2.1, the longitudinal adjustment generated by the spindle 8 is converted by two slide guides 12.1 and 12.2 each rail 4.1 and 4.2 in the desired adjustment of the rails 4.1 and 4.2 transverse thereto in the direction of the width extension of the back portion 30 of the book cover 29. For this purpose, each rail 4.1, 4.2 each associated with a push rod 11.1 and 11.2, where bolts 13 are arranged, each in both parallel to the rails 4.10 and 4.2 aligned slots of the base member 3 and in non-parallel slots of the slidable in the width direction Carriage 24.1 and 24.2 are guided. The slide guides 12.1 and 12.2 are preferably designed arcuate, such that the transmission ratio changes over the adjustment, so that, for example, for narrow back a more accurate adjustment is possible as for wide back. As an alternative to the slotted guides 12.1 and 12.2 also reversing lever, not shown, can be used. An alternative embodiment of the device 1 comprises instead of the shaped piece 2.1 for the production of books with a straight back in FIG. 3 illustrated fitting 2.2, with which the back portion 30 with the lifting of the extended position of Book cover 29 is rounded. In order to produce different formats and contours of the back region 30 with a tool, the shaped part 2.2 consists of several nested elements, the base element 15 simultaneously serving to receive the shaped part 2.2 in the device 1. In this base member 15, a first mold member 16 is slidably mounted, so that the first mold member 16 relative to the base member 15 in the lifting direction A can be raised from this. For this purpose, ramped guides 18 or scenes are provided, which are formed from the base member 15 and the first mold member 16 itself, so that a relative displacement of the base member 15 and the first mold member 16 to each other in the longitudinal direction T causes a displacement in the lifting direction A. In the same way, a second mold element 17 is mounted in the first mold element 16, whereby the in FIG. 4 shows structure shown in cross-section and the adjustment of the base member 15 and the mold elements 16 and 17 can be made arbitrarily to each other. To adjust the mold elements 16 and 17 are connected via coupling elements 20 each with thrust elements 19 and 21, which are operated in the same manner as the push rods 11.1 and 11.2 of the above-described fitting 2.1 of the adjusting drives 10.1 and 10.2. Each of the forming elements 15,16 and 17 shows in its cross section substantially one or two circle segments, whereby, depending on the selected setting different contours of in FIG. 4 shown type revealed. In this case, the surfaces of the shaping elements 15, 16 and 17 areas 22, which remain spaced apart during the molding process to the back portion 30 of the book cover 29. The curvature of the book cover 29 above these non-contact areas 22 results from the material properties of the back region 30 and the stress distribution within the back region 30, which do not allow the back region 30 to be supported over the entire surface.

Both fittings 2.1 and 2.2 are designed such that the interfaces to the receptacle in the device 1 are identical and the fittings 2.1 and 2.2 can be used alternately in the same device 1.

Claims (10)

1. A device for forming book cases (29), comprising a forming piece (2.1, 2.2) which is mounted such that it can lift the spine region (30) of the book case (29) out of its elongate position, wherein said forming piece comprises a base element (3, 15) and at least two additional forming elements (4.1, 4.2, 16, 17) that can be adjusted relative to the base element (3, 15) and define the contour of the forming piece (2.1, 2.2), which forms the spine region (30) and/or the adjacent joint regions (31) of the book case (29), together with the base element, and the device comprising an adjusting drive (10.1, 10.2) being respectively assigned to the at least two forming elements (4.1, 4.2, 16, 17).
2. The device according to claim 1, characterized in that the at least two forming elements (4.1, 4.2, 16, 17) are mounted such that they can be essentially adjusted in the direction of the spine width in a plane extending parallel to the elongate initial position of the book case (29).
3. The device according to claim 1, characterized in that the at least two forming elements (4.1, 4.2, 16, 17) are mounted such that each can be respectively adjusted in a plane extending essentially perpendicular to the elongate initial position of the book case (29).
4. The device according to one of claims 1-3, characterized in that regions (22) of the contour of the forming piece (2.1, 2.2), which faces the book case (29), remain spaced apart from the spine region (30) of the book case (29) during forming thereof.
5. The device according to one of claims 1-4, characterized in that the forming piece (2.1, 2.2) comprises levers which guide the at least two forming elements (4.1, 4.2, 16, 17) parallel to one another.
6. The device according to one of claims 1-4, characterized in that the forming piece (2.1, 2.2) comprises at least one slotted link (12.1, 12.2, 18) which guides the at least two forming elements (4.1, 4.2, 16, 17).
7. The device according to one of the preceding claims, characterized in that the adjusting drives (10.1, 10.2) for adjusting the at least two forming elements (4.1, 4.2, 16, 17) relative to the base element (3, 15) are arranged stationarily.
8. The device according to one of the preceding claims, characterized in that the adjusting drives (10.1, 10.2) are controllably connected to a control unit of the device (1).
9. The device according to claim 7 or 8, characterized in that the respective adjustment assigned to the at least two forming elements (4.1, 4.2, 16, 17) is connected to the associated adjusting drive (10.1, 10.2) in a driving fashion during the entire forming process.
10. The device according to one of claims 7-9, characterized in that the driving connection between the at least two forming elements (4.1, 4.2, 16, 17) and the respectively assigned adjusting drive (10.1, 10.2) respectively comprises a roller (7) which is guided by at least one surface (6).

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