摘要:
The invention provides an apparatus for the mounting and/or demounting of at least two printing sleeves outside a printing unit of a printing machine. The printing sleeves include an outer printing sleeve forming a printing surface and an inner printing sleeve providing diameter compensation between the outer printing sleeve and an impression cylinder of the printing machine. The apparatus having a reception device onto which an inner printing sleeve can be pushed for mounting the two printing sleeves. The apparatus having at least one compressed-air device for facilitating the fixing of the inner printing sleeve on the reception device and for conducting compressed air through orifices assigned to the inner printing sleeve in order thereby to make it possible for an outer printing sleeve to be pushed more easily onto the inner printing sleeve.
摘要:
A printing unit enabling format variability, is distinguished by substantial component standardization and simple stand design. For this purpose, printing unit cylinders are mounted in slides which are arranged on at least one carrier and which, for distance adjustment, can be displaced on the carrier in each case by means of a drive.
摘要:
A printing unit enabling format variability, is distinguished by substantial component standardization and simple stand design. For this purpose, printing unit cylinders are mounted in slides which are arranged on at least one carrier and which, for distance adjustment, can be displaced on the carrier in each case by means of a drive.
摘要:
To provide for temporary storage of freshly printed signatures (6), transported by a continuously moving product transport gripper chain (4, 5), a plurality of pocket structures (12), each of which includes a plurality of connected sheet-like elements (16,17) which, between each other, define pockets (15), are provided. The sheet-like elements are arranged for pivotable movement about an end portion to permit fan-like spreading out of the elements for reception in the pockets of, for example, one product or signature delivered by the transport system. Storage units are provided to store empty pocket structures and to receive pocket structures which are filled with signatures. The storage structures, preferably, are formed of separate sheet-like elements connected together, and engaging the signatures at marginal portions, so that access can be provided to the signature, for example from below, for compressed air or other drying gas, to dry the fresh ink on the signatures, for example when placed within the storage units (26). To space the sheet-like elements, preferably, a small projection or tab is placed on them at facing surfaces, in the region of the margins of the signatures, that is, in non-printed areas thereof.
摘要:
Folded products, supplied in dual-comb like interdigited form are transported by a transport chain system (75) carrying grippers (84, 85) in a vertical direction to form a vertical stack. Grippers engage alternate products about their fold line, and hold the interdigited intermediate sheets therebetween. The transport system and a carrier structure are placed in relative positions to permit the grippers of the transport system to pick up the products (1, 2) at the fold line and, after reorienting the products, to place them in a vertical stack on a support (96, 110), a cam track (88) opening the grippers on the transport system (75) as the grippers pass about a vertically movable deflection wheel (97) to release the products. The deflection wheel moves upwardly as the stack grows. The products are originally supplied in open V-shaped form, and one group (2) of the products is gripped at the open edges of the V, as well as at the fold lines; as so gripped it is inverted and transported to fit, roof-like, over the other products (1) which retain their open V position, for example by guiding a pair of clamping strips or rails (35, 35') with grippers (40, 41) thereon in a circular path.
摘要:
To provide for simultaneous wrapping or packaging of products, particularly flat, and especially folded printed products (1), in pockets, a foil or web (29) is pulled from a supply roll in a predetermined path over a plurality of cutter rails (23, 118) associated with pairs of holder elements (42, 42'-50). The so-pulled foil is continuously fed, even after it is stretched over the cutter elements, and a deflection bar or rail is passed between the holder elements to deflect the foil into zig-zag shape, to form reception pockets. The products are introduced into the pockets, the zig-zag shaped pockets are severed along a connection line and welded shut at the sides, as well as along the connection lines, for example by heat welding.
摘要:
To permit placement of selected copy products having different subject matter together in specifically collated copy product assemblies, for association of individualized copy product assemblies with delivery addresses in a specific sequence, for example specific to subscribers or distribution stations or regions, a controller-computer (10) stores delivery addresses and the desired copy products at specific delivery addresses. All the copy products are stored in individual storage locations, from which, with respect to a specific address within the sequence, selected individual copy products are removed, for placement on collecting spaces (48-56) on a collecting transport system. The controller-computer includes timing circuits controlling, respectively, the removal and guidance of selected copy products for the specific addresses in the sequence to specific collecting spaces, as the transport system moves beneath the storage locations or stations, to form the collected product assemblies which, then, can be supplied with a cover (39) or directly with the delivery address. The first or last of the copy product stations (1, 4) can hold folded newspapers which, for example, can be the main section of a newspaper, with which specific regional or advertisement inserts, formed by the copy products, are then assembled.
摘要:
A method and apparatus for applying a medium, especially a conditioning medium or a rubber covering medium, to a printing form positioned on a form cylinder, especially to a rewritable and erasable printing form, is disclosed. The medium is applied to a rubber covered cylinder or to a separate applicator roll or an applicator cylinder for the medium, the medium then being transferred from the rubber covered cylinder or applicator roll or applicator cylinder to the form cylinder, in this case the rubber covered cylinder, the applicator roll or the applicator cylinder rolling repeatedly over the form cylinder in order to ensure a uniform application of the medium to the printing form.
摘要:
A printing unit having at least one press unit, the, or each, press unit having at least one form cylinder, a transfer cylinder, an inking unit and preferably a damping unit, and having at least one imaging device for imaging and/or de-imaging a rewritable and erasable printing form positioned on the form cylinder. The inking unit, if appropriate together with the damping unit, can be pivoted with respect to a form cylinder from a printing position into a rest position. The imaging device can be pivoted with respect to the form cylinder from an imaging position into a rest position. The imaging device is pivoted into a rest position when the inking unit and, if appropriate, damping unit is pivoted into the printing position and, when the imaging device is pivoted into the imaging position, the inking unit and, if appropriate, the damping unit is pivoted into a rest position.
摘要:
To provide a varnishing apparatus for indirect printing with the lowest possible structural outlay, a varnishing mechanism of the varnishing apparatus for varnishing webs includes a form cylinder and a transfer cylinder, the web running between the transfer cylinders. At least one of the form cylinders bears a gravure printing form such that the web may be varnished on one or both sides.