摘要:
A flexographic printing machine (1) comprising at least one support structure (2), at least one printing roller (3) pivotably mounted on said support structure (2) and configured to be driven in rotation about a rotation axis (X) and to be intercepted by a tape (N) of material to be printed, said printing roller (3) comprising at least one support core (4) pivotably mounted on said support structure (2); at least one tubular element (5) mechanically connected to said core (4) and extending along said rotation axis (X); connecting means (6) at least partially interposed between said support core (4) and said tubular element (5) and configured to mechanically connect them; said connecting means (6) comprising at least one protruding element (7), extending from said support core (4) radially with respect to said rotation axis (X); at least one housing seat (9) formed on an inner wall of said tubular element (5) and configured to house said protruding element (7) of said support core (4); said protruding element (7) is provided with at least two side walls (8) inclined with respect to said rotation axis (X), and said housing seat (9) is provided with two stop walls (10) inclined with respect to said rotation axis (X) and configured to receive said inclined side walls (8) of said protruding element (7) in bump.
摘要:
Device for the substitution of a cliché-jacket from a cliché cylinder in a printing machine or the like wherein said cylinder (1) is connected to a motor (3) driving it into rotation about its longitudinal axis and is provided with radial holes connected with an air inlet (7), the latter being apt to be connected with a compressed air supply (6) by means of a delivery means (8), device characterized in that it comprises automatic means sensing the position of said air inlet (7) relative to said delivery means (8) and automatic means for positioning said air inlet (7) and said delivery means in a reciprocal coupling position, said automatic sensing and positioning means being connected to a programmable electronic unit (E) which, when said air inlet (7) and said delivery means (8) are coaxial, drives said coupling and switches on an on-off valve (60) which, on a side, is connected to said compressed air supply (6) and, on the other side, is connected to said delivery means (8).
摘要:
Device for the substitution of a cliché-jacket from a cliché cylinder in a printing machine or the like wherein said cylinder (1) is connected to a motor (3) driving it into rotation about its longitudinal axis and is provided with radial holes connected with an air inlet (7), the latter being apt to be connected with a compressed air supply (6) by means of a delivery means (8), device characterized in that it comprises automatic means sensing the position of said air inlet (7) relative to said delivery means (8) and automatic means for positioning said air inlet (7) and said delivery means in a reciprocal coupling position, said automatic sensing and positioning means being connected to a programmable electronic unit (E) which, when said air inlet (7) and said delivery means (8) are coaxial, drives said coupling and switches on an on-off valve (60) which, on a side, is connected to said compressed air supply (6) and, on the other side, is connected to said delivery means (8).
摘要:
Eine Druckmaschine, insbesondere eine Rollenrotations-Offsetdruckmaschine mit einem eine erste Druckplatte (20a) und eine zweite Druckplatte (20b) tragenden Plattenzylinder (3, 13), wobei der Plattenzylinder (3, 13) einen Zylinderkörper (27) mit einer Außenoberfläche (25) und eine in eine Klemmposition und eine Freigabeposition bewegbare gemeinsame Klemmvorrichtung (5, 15) zum Festklemmen der Druckplatten (20a, 20b) auf dem Plattenzylinder (3, 13) umfasst, zeichnet sich aus durch eine nahe der Klemmvorrichtung (5, 15) angeordnete Andrückleiste (4, 14), die ein erstes Segment (4A) zum Andrücken und Halten der ersten Druckplatte (20a) auf dem Plattenzylinder (3, 13) und ein zweites Segment (4B) zum Andrücken und Halten der zweiten Druckplatte (20b) auf dem Plattenzylinder (3, 13) umfasst, wobei das erste Segment (4A) unabhängig von dem zweiten Segment (4B) bewegbar ist.
摘要:
A web-fed, multicolor, offset perfecting printing press having a series of printing units (P) for printing different color images on both sides of a continuous web (W) of paper, each printing unit having a combination of a plate cylinder (PC) and a blanket cylinder (BC) on one side of the web, and another such combination on the other side. Each plate cylinder is split into a pair of halves (PC 1 and PC 2 ) for printing a pair of images in juxtaposition transversely of the web, the pair of halves of the plate cylinder being capable of independent displacement both axially and circumferentially of the plate cylinder. For precise registration of the different color images printed by the different printing units (P) on the web, there are provided a pair of axial adjustments (3 and 3', or 3a and 3a') coupled to opposite ends of each plate cylinder (PC) for causing axial displacement of the respective plate cylinder halves with a view to fine image positioning transversely of the web, and a circumferential adjustment (4 or 4a) for causing circumferential displacement of either half of each plate cylinder with a view to fine image positioning longitudinally of the web. A separate drive mechanism (1) drives each combination of one plate cylinder and one blanket cylinder of each printing unit, so that each drive mechanism serves the additional purpose of positioning the images longitudinally of the web preparatory to fine positioning.
摘要:
Die Erfindung betrifft eine Rotationsdruckmaschine mit wenigstens einem Druckwerk, welches einen Plattenzylinder (12) aufweist, der lösbar auf der ihn tragenden Welle (10) anbringbar ist, wobei Plattenzylinder und Welle mit Mitteln versehen sind, die es ermöglichen, den Plattenzylinder sowohl axial als auch in Umfangsrichtung zur Welle und damit zum zu bedruckenden Objekt auszurichten und in der ausgerichteten Position an der Welle zu befestigten, dadurch gekennzeichnet, daß der Plattenzylinder (12) mit Positioniermitteln (18) für die Festlegung seiner Position in Umfangsrichtung und in axialer Richtung versehen ist, die mit der Welle zugeordneten Anschlagmitteln zusammenwirken. Die Anschlagmittel sind axial verstellbar in einem von der Welle getragenen Kragen (30) angeordnet, der mit Ausnehmungen versehen ist, in die die Positioniermittel (16,18) eingreifen, um darin mit den Anschlägen in Berührung zu kommen.