Patent Application
20080063492
Exemplary embodiments of the inventive cover feeding device are described in greater detail below with reference to the figures. In these schematic perspective representations,
The cover feeding devices 10.1, 10.2 and 10.3 illustrated in
During their circulation, the book blocks 7 are initially processed on the spine and provided with glue on the spine and lateral surfaces near the spine. At the end of a curve in the closed path, the covers 1 are fed in a positionally accurate fashion and pressed against the spine and, if applicable, against the lateral regions of the book block 7. In order to provide a better overview,
In these cover feeding devices 10.1, 10.2 and 10.3, the covers 1 are stored in magazines 11. After the cyclic decollation of the covers, they are transferred to a transport device in order to be fed to the respective book blocks 7. During this process, the covers pass through a scoring device 16 for producing bending points. The number and the design of the scores depend on the type of brochure. The inner spine scores define a spine region 4 of the cover 1 that is glued to the block spine.
The transport device for the covers 1 comprises a cover conveyor 12 with two adjacently arranged endless conveying means 13 that are provided with pushers 13a for pushing the covers 1 forward within fixed cycle intervals.
The book blocks 7 are transported such that the spine 4 is directed downward in the adhesive binder, the covers 1 need to be fed with the inside 2 situated on the top. Consequently, the outside 3 lies on the bottom during the joining with the book block 7. The head 5 of the cover 1 is situated at the rear and the foot 6 forms the leading end referred to the transport direction.
A printing unit in the form of an inkjet printing head 17 is provided in the cover feeding device in order to print the covers 1, for example, with an address 8. In the embodiments of the invention illustrated in the figures, the inkjet printing head 17 is arranged above the cover transport.
In order to print the outside 3 of the cover that lies on the bottom when the cover is joined with the book block 7, the cover transport device is respectively provided, according to the invention, with a turning device 21, 31a, b and 41 such that at least the region of the outside 3 of the cover to be printed is directed upward during the printing process and consequently can be printed from the top.
A first embodiment illustrated in
The turning conveyor 21 could also be realized in the form of a 360° turning conveyor such that the covers 1 are conventionally fed with the outside 3 situated on the bottom. In this case, the printing is carried out approximately in the center of the turning process while the outside 3 is directed upward. It would also be conceivable to utilize a turning conveyor that initially turns the covers by an angle that lies between slightly more than 90° and no more than 180° and turns the covers back into their primary position after the printing process.
A second embodiment illustrated in
The inkjet printing head 17 is approximately arranged at the summit of the looping conveyor 41. The downstream transport section up to the transfer of the covers 1 to the cover conveyor 12 is used as the drying section in this embodiment.
As another preferred feature applicable to all embodiments as shown in
| Number | Date | Country | Kind |
|---|---|---|---|
| DE 102006042102.7 | Sep 2006 | DE | national |
