摘要:
A device (1) for replacing the printing rollers of a printing unit (2), particularly for in-line flexographic rotary machines, which comprises: - a work station (5) for a first, working printing roller (13), - a holding station (3, 7) for a second printing roller (11), - a removal station (7, 3) for a printing roller (11, 13) to be removed, - movement means (9), for the movement of the first printing roller (13) from the work station (5) to the removal station (7, 3) and for the movement of the second printing roller (11) from the holding station (3, 7) to the work station (5).
摘要:
An assembly for axially aligning a print die, the assembly comprising an axle; at least a first expandable force ring receiving the axle; a roll having a circumferential outer surface and a hollow bore receiving the axle and the at least first expandable force ring; loading sleeves connected operatively to the axle for alternatively outwardly compressing the at least first expandable force ring against the roll's hollow bore, for resisting axial movement of the roll with respect to the axle, and for alternatively inwardly decompressing the at least first expandable force ring for permitting such axial movement; and print die mounting magnets fixedly attached to the roll's outer circumferential surface for attaching the print die to the roll.
摘要:
Eine Rollenrotationsdruckmaschine umfasst mehrere Druckwerke mit jeweils einem Plattenzylinder und einem Gummituchzylinder. Diese sind derart im Maschinenrahmen angeordnet, dass jeweils zwei Gummituchzylinder aneinander anstellbar sind und dadurch eine Papierbahn, die zwischen den Gummituchzylindern durchleitbar ist, beidseitig bedruckbar ist. Zudem umfasst diese Druckmaschine Farbwerke zum Einfärben der Druckwerke und Feuchtwerke zum Aufbringen der Feuchtmittel. Erfindungsgemäss sind die Farbwerke (14) so ausgebildet sind, dass mit mindestens einigen der Farbwerke (14) jeweils zwei Plattenzylinder (16) und somit zwei Gummituchzylinder (15) einfärbbar sind. Dadurch wird eine kompakte, Platz sparende und kostengünstige Bauweise dieser Druckmaschine erreicht.
摘要:
The apparatus comprises a plate cylinder (15), a blanket cylinder(16) and an impression cylinder (17). A web (W) passes between the blanket and impression cylinder to enable print to be applied to the web by the blanket cylinder. The plate and blanket cylinders (15, 16) are provided as a one-piece cartridge movable axially to a position offset from the web. The impression cylinder (17) is also movable independently of the other cylinders to a position offset from the web to enable the impression cylinder to be changed without breaking the web or removing the web from the apparatus.
摘要:
Method for setting the spacings between cylinders of an inking unit which delimit at least two cylinder nips, and in which method the spacings are set on the basis of measured values which are obtained from the surface of at least one of the cylinders of the inking unit. It is considered to be novel and inventive that, during the setting of the spacing between the two cylinders which delimit a second cylinder nip, knowledge is used which was obtained during the setting of the spacing between the two cylinders which delimit a first cylinder nip. A printing press for carrying out the described method is also described and claimed.
摘要:
The invention relates to printing units on a web-fed rotary printing press, comprising a lateral frame on which at least one printing unit, embodied as a transfer cylinder with a cooperating printing cylinder in the form of a form cylinder, is mounted such as to rotate, whereby the printing unit is provided with an inking unit comprising a roller.
摘要:
Die Erfindung betrifft eine Vorrichtung zur Lagerung eines Zylinders einer Druckeinheit mit einem entlang eine in Stellrichtung in Linearlagern bewegbaren, ein Radiallager aufweisenden Lagerblock. Die Lagerung ist als Lagereinheit in der Art einer als ganzes montierbaren Baueinheit ausgeführt, welche neben dem Radiallager beide die Relativbewegung des Lagerblockes ermöglichenden zusammen wirkenden Lagerelemente umfasst.
摘要:
A method for the adjustment of the printed image in a web printing machine is disclosed. The above is provided with ink transfer rollers (F,K) and actuators for the same, by means of which the position (x) of the rollers (F, K) may be adjusted. The use of at least one camera to record the intensity of the light reflected from the printed material during the printing process and to supply the recorded measured values to a control and regulation unit which compares the recorded measured values with set values and generates control signals for the actuators of at least a part of the rollers involved in the printing process is novel and inventive. Based on the control signals the actuators change the position of the corresponding roller until the measured values are within a tolerance range again.
摘要:
Beschrieben wird ein Verfahren zur Einstellung des Druckbildes einer Rotationsdruckmaschine. Diese ist ausgestattet mit Farbübertragungswalzen (F,K) und diesen zugeordneten Stellantrieben, mit welchen die Position (x) der Walzen (F, K) veränderbar ist. Neu und erfinderisch ist, dass zumindest eine Kamera während des Druckbetriebes die Intensität des von dem bedruckten Stoff reflektierten Lichts aufzeichnet sowie die aufgezeichneten Messwerte einer Steuer- und Regeleinheit zuführt, welche die aufgezeichneten Messwerte mit Sollwerten vergleicht und Stellsignale für den Stellantrieb zumindest eines Teils der am Druckprozess beteiligten Walzen erzeugt. Aufgrund der Stellsignale wird der Stellantrieb der Relativposition der ihm zugeordneten Walze solange verändert, bis die Messwerte wieder innerhalb eines Toleranzbereichs liegen.
摘要:
The invention relates to a device (20) for adjusting the contact pressure between an adjustably mounted first cylinder (21) and at least one second cylinder (22) in a printing machine, especially in a web-fed printing machine. The inventive device comprises at least one actuator (34, 50) with which the first cylinder (21) can be forced in the direction of the second cylinder (22) with an adjustable force, and a fixing device (21) for fixing the first cylinder (21) relative to the second cylinder (22).