BRIEF DESCRIPTION OF THE DRAWINGS
These and other features and advantages of the invention will be further understood from the following detailed description of the preferred embodiments with reference to the accompanying drawings, which show in:
FIG. 1 A cross section of a book production line, showing the backlining station in the operating position;
FIG. 2 A representation according to FIG. 1, for which the backlining station is in the position where it is outfitted and/or retrofitted;
FIG. 3 A cross section of a book production line showing an alternative backlining station in the production position;
FIG. 4 A representation according to FIG. 3, for which the backlining station is in the position where it is outfitted and/or retrofitted; and
FIG. 5 A top view of a book production line with two backlining stations arranged one after another.
DETAILED DESCRIPTION
FIG. 1 shows a cross section of a book production line in the region of a backlining station, comprising an arrangement 1 for backlining or headbanding a book block spine. A feeding device 2, which conveys in a direction 28 perpendicular to a book production line supplies backlining material 3 from a storage area (not shown) to a unit 7. The unit 7 includes a cross cutter 4, a transfer mechanism 5, and a support table 6. The web-shaped backlining material 3 is cut ahead of time into backlining material sections 10 of a required length, for example, with a circular blade, and is provided with headbands. More specifically, the backlining material 3 is moved forward by the feeding device 2 by a width measure that is adjusted to a size of a book block spine 9, and is positioned underneath an upper knife 8 of the cross cutter 4 in a raised position. The upper knife 8 is lowered to cut the backlining section 10. The backlining section 10 of the backlining material 3 is moved forward, and comes to rest on the support table 6, which is adjacent to a lower knife 11 of the cross cutter 4.
A suction plate 12 of the transfer mechanism 5 is aligned substantially parallel to the support table 6 and movable with a pivoting movement to a takeover position 13 and a discharge position 14. Before the cross cutter 4 cuts off the backlining section 10 from the backlining material 3 by lowering the upper knife 8, the suction plate 12 of the transfer mechanism 5 is pivoted into the takeover position 13. The backlining section 10 is clamped in between the suction plate 12 and the support table 6. Once the cut is completed, the suction plate 12 exerts suction on the backlining section 10 and transports the backlining section 10 with the pivoting movement to the discharge position 14. Successively following one another, upright positioned book blocks 15 are supplied with two opposite-arranged, circulating conveying chains 16, 16′ to a conveyor 17 of the backlining station and are aligned and supported by guides 18, 18′ on the sides.
While positioned in the discharge position 14 of the transfer mechanism 5, the suction plate 12 places the backlining section 10 over the book block spine 9, which is covered ahead of time with adhesive, and is pivoted back to the takeover position 13 for taking over the next backlining section 10 in the same manner. In a station that is arranged downstream of the backlining station, the backlining sections 10 that have been placed over the spines 9 of the book blocks 15 are pressed evenly and with the complete surface against the adhesive-covered book block spines 9 by using a Teflon band, a flexible pillow, e.g., made of a foam material, or with rollers.
A horizontally displaceable guide element 19, which is arranged on a side 32 of the conveying section 17 that is opposite the feeding device 2, and which is connected to one or more lifting devices 20, e.g., pneumatic cylinders, is shown in the idle position according to FIG. 1.
FIG. 2 shows a representation where the backlining station is in an outfitting or retrofitting position. The unit 7, including the cross cutter 4, the transfer mechanism 5, and the support table 6, is raised up for this operation by a distance X from the production position shown in FIG. 1. The guide element 19 has been moved by the lifting device 20 from the idle position to an operating position, so that the guide element 19 rests against the support table 6. A forward or front edge 30 of the guide element 19, as seen in transfer direction of the backlining material 3, comes to rest below the support table 6. The transfer mechanism 5 is in a position in which the suction plate 12 is raised from the support table 6 and is located between the takeover position 13 and the discharge position 14 (shown in FIG. 1). The arrangement shown in FIG. 2 makes it possible to push the backlining material 3, which is conveyed by the feeding device 2 through the stationary cross cutter 4, across the book blocks 15 positioned on the conveying section 17, which pass through below the guide element 19 during the outfitting and/or retrofitting operation.
Similarly to FIG. 1, FIG. 3 shows a cross section through a backlining station of a book production line in the production position, that is provided with an alternative, pivotable guide element 21 which is pivotable around a pivoting axis 22 arranged substantially parallel to a direction of conveying the book blocks 15 at one end of the guide element 21. With the suction plate 12 on the transfer mechanism 5, the backlining sections 10 are moved from the support table 6 onto the adhesive-covered book block spines 9, as described above.
FIG. 4 shows a representation of the outfitting and/or retrofitting position, with the pivoting guide element 21, which is in the operating position and thus bridges the book production line in the manner of an arch. The front end 30 of the pivoting guide element 21, as seen in conveying direction 28 of the backlining material 3 is positioned lower than the support table 6.
During the changeover of the backlining station from the outfitting and/or retrofitting position, as shown in FIGS. 2 and 4, back to the production position shown in FIGS. 1 and 3, a web section 23 of the backlining material 3 that is held by the feeding device 2 and is connected to the storage area is cut off by the cross cutter 4. Experience has shown that for the web section 23 to drop across the conveyor 17 and down, as a result of its own weight, this web section must have a specific length.
FIG. 5 shows a section of a book production line with two backlining stations arranged one after another in the book block conveying direction. The first backlining station on the left is in the operating position as shown in FIG. 1. The second backlining station on the right is in the outfitting and/or retrofitting position according to FIG. 2.
It will be understood that the above description of the present invention is susceptible to various modifications, changes and adaptations, and that the same are intended to be comprehended within the meaning and range of equivalents of the appended claims.
Patent Application
20080056849
