摘要:
A method and an apparatus for handling printing plates which are fed to at least two process stations, include at least one receiving deck on which the printing plates are provided and fed to the different process stations by pivoting the receiving deck. The receiving decks are pivoted first of all about a first rotational axis and likewise about a second rotational axis which is different than the first, in order to ensure favorable receiving angles between the receiving deck and the individual process stations in each case for the printing plate transfer. A printing plate exposer having an apparatus for handling printing plates, is also provided.
摘要:
To provide a plate supply and discharge device and a printing plate forming device which are capable of transferring plates and printing plates of various sizes and preventing the plates and printing plates from being damaged in the plate supply and discharge device (printing plate forming device). A plate supply and discharge unit (4) which supplies a plate (P1) to a drawing unit (3), receives a printing plate P2, which is obtained by drawing an image on the plate P1, from the drawing unit (3), and delivers it to a processor. The plate supply and discharge unit includes a plate supply table (41) for allowing the plate (P1) to float at atmospheric pressure, moves the plate (P1) in a state of being allowed to float at atmospheric pressure above the plate supply table (41), and supplies it to the drawing unit (3).
摘要:
To fold sheets of newsprint (1), a ring gear 7 is driven in rotation by a motor 11 under the control of a controller 12 such that, for most of the time, the ring gear 7 rotates at the same speed as a folding cylinder 2 and arms 8. When it is desired to initiate a folding operation, the ring gear 7 is momentarily stopped or slowed. The relative motion that occurs between the ring gear 7 and planet gears on the arms 8 causes the planet gears 9 to rotate about their axes and respective tucking blades 6 mounted on the planet gears 9 to protrude above the surface of the cylinder 2, where they engage collated sheets on the cylinder surface and push them into the nip of folding rollers (4). Upon completion of the movement of the planet gears 9 and associated tucking blades 6, the ring gear 7 is again caused to move at the same angular speed as the arms 8, such that the tucking blades 6 retain their “silenced” positions below the surface of the cylinder 2.
摘要:
At least two blankets which are removed from the same cylinder of a printing machine one after the other, are stored in a storage device. The blankets are drawn off the cylinder in a longitudinal direction and are stored in the device at an angle of inclination of not more than 15° relative to the horizontal. The second blanket to be drawn off is stored below the previously drawn-off blanket at a distance that is vertical along its length.
摘要:
A method and an apparatus for automatically feeding printing plates to a rotary printing press include conveying devices spaced apart from each other transversely to a conveying direction for feeding the printing plate to a clamping device having register pins. One of the conveying devices is lifted briefly off the printing plate in the event of a lack of in-register contact while the other conveying device remains in contact with the printing plate and thus ensures a forward drive of the printing plate, while the lifting of one conveying device promotes stress relief in the printing plate. A sheetfed rotary printing press having the apparatus, is also provided.
摘要:
A method and an apparatus for handling printing plates which are fed to at least two process stations, include at least one receiving deck on which the printing plates are provided and fed to the different process stations by pivoting the receiving deck. The receiving decks are pivoted first of all about a first rotational axis and likewise about a second rotational axis which is different than the first, in order to ensure favorable receiving angles between the receiving deck and the individual process stations in each case for the printing plate transfer. A printing plate exposer having an apparatus for handling printing plates, is also provided.
摘要:
A system and method for adhering and aligning a generally flat, planar object to an adhesive layer, and for facilitating the mounting of the generally flat planar object, such as a printing plate, in near perfect alignment in a cylindrical manner. The method includes providing a generally flat, planar object such as a printing plate and an adhesive member having an adhesive layer at least on one surface. The adhesive member is preferably approximately the same size as the printing plate. The printing plate is mounted to the adhesive member such that there is one edge of the adhesive member which is not initially covered by the printing plate and one edge of the printing plate which overhangs the adhesive member. The combined adhesive member/printing plate structure is next rolled into a cylindrical form and held in place on a device which allows alignment marks on the printing plate to align the two ends of the printing plate prior to the printing plate being fully adhered to the adhesive member. The resulting sleeve structure can then be inserted onto a plate cylinder and this assembly utilized in a printing press. In another embodiment, the adhesive member is provided as a single or multi-layered structure pre-rolled into a generally circular form.
摘要:
An apparatus for and a method of loading and unloading of plates to and from an imager. The apparatus includes a loading area holding one single or a plurality of plates and an unloading area holding a single plate, the areas arranged vertically. The plate includes ultraviolet curable material. The apparatus includes a control system configured when in operation to control the automated loading and unloading and the apparatus elements therefor. One fully automatic version includes automatic loading from a stack or set of plate magazines and in the case that the plate includes a protective sheet thereon, includes removing the protective sheet from the plate. Some versions also include one or more ultraviolet sources to irradiate the flexographic plates with ultraviolet radiation during the automated loading and/or unloading. The ultraviolet sources are controlled by the same control system.
摘要:
An apparatus and a method is provided for handling printing plates which are provided in the form of a printing plate stack on at least one storage plane. If printing plates having a particularly large format are required to set images on them in an exposer, loading cassettes for a magazine of cassettes is at least problematic. Therefore, a tray is moved out of a storage device via an adjacent lifting device into the lower region of the storage device, and is fed there to a drawer which can be moved out of the storage device. If the tray is situated on the drawer, the latter can be moved by an operator in a second horizontal direction out of the handling apparatus, in particular out of the storage device. In this position, the tray can then be loaded in an ergonomically favorable manner.