摘要:
Die Erfindung betrifft ein Verfahren zur Prüfung einer Rasterwalze (200) einer Druckvorrichtung mit einer Maschine (100), wobei die Maschine (100) eine Steuerungseinrichtung aufweist, wobei die Maschine (100) eine mit einem Rotationsantrieb (104) ausgestattete Lagerungseinrichtung (102) zur Aufnahme und zur Rotation der Rasterwalze (200) um ihre Längsachse aufweist, und wobei die Maschine (100) eine optische Erfassungseinheit aufweist, umfassend die Schritte: - Einlegen einer zu prüfenden Rasterwalze (200) in die Lagerungseinrichtung (102), - optisches Erfassen der Näpfchen umfassenden Lineatur am Mantel der eingelegten Rasterwalze (200) mittels der optischen Erfassungseinheit, - Auswerten der erfassten Lineatur und Ermitteln des Volumens an aufzunehmender Farbe durch die Näpfchen mittels der Steuerungseinrichtung, und a) Einstufung der Rasterwalze (200) als weiterverwendbare Rasterwalze (200), wenn das erfasste und ermittelte Volumen ein Grenzvolumen nicht erreicht oder unterschritten hat, oder b) Einstufung der Rasterwalze (200) als auszusondernde oder aufzubereitende Rasterwalze (200), wenn das erfasste und ermittelte Volumen das Grenzvolumen unterschritten hat. Die Erfindung betrifft außerdem eine Maschine (100) zur Durchführung des Verfahrens.
摘要:
A printing press makes an ink reservoir between an ink fountain and an ink fountain roller and supplies ink to the plate cylinder via a ductor roller advancing and retracting towards and from the ink fountain roller. The printing press is provided with the ink fountain, a base supporting the ink fountain, a slide mechanism sliding the ink fountain along the base in order to control the clearance between the tip of the ink fountain and the ink fountain roller, a cleaner removing the ink from the ink fountain roller, an advancement and retraction mechanism for advancing and retracting the cleaner between a contact position to the ink fountain roller and a non-contact position, and a controller. The controller controls the slide mechanism and the advancement and retraction mechanism, enlarges the clearance in order to pass the dirt with the ink through the clearance, and makes the cleaner in contact with the ink fountain roller to remove the dirt with the ink.
摘要:
Die Erfindung betrifft ein Verfahren zum Reinigen der Oberfläche wenigstens einer rotierbaren Komponente einer Druckmaschine von einem Druckfluid, wobei einer von mehreren vorgegebenen Reinigungsvorgängen automatisiert ausgewählt und durchgeführt wird, das Auswählen auf Basis eines vorgegebenen, auf einem Rechner (10) ausgeführten, mathematischen Models (15) erfolgt und beim Ausführen des Models eine Größe berechnet wird, welche zu einer auf der Oberfläche (8) befindlichen Menge des Druckfluids (6a, 6b) korrespondiert. Die Erfindung schafft ein verbessertes Reinigungsverfahren, welches in allen Betriebsarten der Druckmaschine anwendbar ist und insbesondere Einsparungen beim Verbrauch von Waschmittel, Waschtuch und/oder Wasser ermöglicht.
摘要:
The novel anilox roller laser cleaning machine consists of a multi-laser head (4) with two or more laser modules (5) that generates two or more contiguous focal points (16), whose separation can be modified by moving the laser modules (5) along a guide (6). It also incorporates a wheel (28) associated with an encoder (21) operatively connected to the electronic system (22) of the machine and, in particular, with the emergency stop system (23). Another novel aspect of the invention refers to a method and means for auto-adjusting the laser focal point (16) to the diameter of the anilox roller (2), wherein the displacement of a second movable support (20) is measured, the atter being proportional to the diameter of the anilox roller (2), said telemetry being received by the electronic system (22) of the machine that extrapolates the distance the multi-laser head (4) have to be moved so that the focal point (16) is located on the surface of the anilox roller (2), by maneuvering the servomotors (11) of micrometric axes (10) to drive the multi-laser head (4) to that position.
摘要:
In an ink film thickness distribution forming method in an ink supply apparatus including an ink fountain (1) storing an ink (2), a plurality of ink fountain keys (4-1 - 4-n) arranged in the ink fountain (1), an ink fountain roller (2) to which the ink is supplied from the ink fountain (1) in accordance with the opening ratios of the plurality of ink fountain keys (4-1 - 4-n), an ink ductor roller (5) to which the ink is transferred from the ink fountain roller (2) by an ink feed operation, and an ink roller group (6) including at least one ink form roller (6-1 - 6-4) to which the ink transferred to the ink ductor roller (5) is supplied, the throw-off operation of the ink form roller (6A1, 6A2) positioned at an end of the ink roller group (6) is performed after the end of a print job using a preceding printing plate (S103). The ink feed operation of the ink ductor (5) roller is stopped after the end of the print job using the preceding printing plate (S134). The ink roller group (6) is divided into a plurality of roller subgroups after the end of the print job using the preceding printing plate (S135). The ink in at least one of roller subgroups out of the divided roller subgroups is removed (S137 -S145). An ink film thickness distribution forming apparatus is also disclosed.
摘要:
In an ink film thickness distribution forming method in an ink supply apparatus including an ink fountain (1) storing an ink (2), a plurality of ink fountain keys (4-1 - 4-n) arranged in the ink fountain (1), an ink fountain roller (2) to which the ink is supplied from the ink fountain (1) in accordance with the opening ratios of the plurality of ink fountain keys (4-1 - 4-n), an ink ductor roller (5) to which the ink is transferred from the ink fountain roller (2) by an ink feed operation, and an ink roller group (6) including at least one ink form roller (6-1 - 6-4) to which the ink transferred to the ink ductor roller (5) is supplied, the throw-off operation of the ink form roller (6A1, 6A2) positioned at an end of the ink roller group (6) is performed after the end of a print job using a preceding printing plate (S103). The ink feed operation of the ink ductor (5) roller is stopped after the end of the print job using the preceding printing plate (S134). The ink roller group (6) is divided into a plurality of roller subgroups after the end of the print job using the preceding printing plate (S135). The ink in at least one of roller subgroups out of the divided roller subgroups is removed (S137 -S145). An ink film thickness distribution forming apparatus is also disclosed.