DE637688C - Device for moving the doctor blade back and forth in its longitudinal direction through a crank mechanism in rotogravure printing machines - Google Patents
Device for moving the doctor blade back and forth in its longitudinal direction through a crank mechanism in rotogravure printing machinesInfo
- Publication number
- DE637688C DE637688C DEM132222D DEM0132222D DE637688C DE 637688 C DE637688 C DE 637688C DE M132222 D DEM132222 D DE M132222D DE M0132222 D DEM0132222 D DE M0132222D DE 637688 C DE637688 C DE 637688C
- Authority
- DE
- Germany
- Prior art keywords
- crank mechanism
- doctor blade
- longitudinal direction
- forth
- rotogravure printing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F9/00—Rotary intaglio printing presses
- B41F9/06—Details
- B41F9/08—Wiping mechanisms
- B41F9/10—Doctors, scrapers, or like devices
- B41F9/1009—Doctors, scrapers, or like devices with reciprocating movement
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Description
Es ist bekanntgeworden, bei RotatTonstiefdruckmaschinen das Hinundherbewegen der Rakel in ihrer Längsrichtung durch ein auf der Rotationstiefdrudonaschinie angeordnetes, von ihr bewegtes Kurbelgetriebe oder durch einen Kolben zu bewirken. Die erstgenannte Anordnung ist verwickelt und teuer, da sie verschiedene Verbindungsteile, ζ. Β. besondere Übertragungswellen, erfordert; diese beeinträchtigen auch, die Freiheit beim Entwurf der Maschine. Vor allem ist es bei dieser Anordnung nicht möglich, die Rakel während des Betriebes stillzusetzen; dies ist besonders beim Entstehen von Rakelstreifen notwendig, deren Ursache aufgefunden werden soll. Es ist auch schon vorgeschlagen worden, die Rakel durch den Kolben einer besonderen Pumpe anzutreiben, in die ein flüssiges oder gasförmiges Druckmittel eingeleitet wird. Ein stoßfreies Arbeiten ist hier nicht gewährleistet; außerdem ist hier die Anordnung1 einer besonderen Pumpe notwendig, die in Druckereien in der Regel nicht zur Verfügung steht.It has become known to effect the reciprocating movement of the doctor blade in its longitudinal direction in rotogravure printing presses by means of a crank mechanism arranged on the rotogravure printing machine and moved by it, or by means of a piston. The former arrangement is intricate and expensive as it has various connecting parts, ζ. Β. special transmission waves, required; this also affects the freedom in designing the machine. Above all, with this arrangement it is not possible to shut down the doctor blade during operation; this is particularly necessary when squeegee streaks arise, the cause of which is to be found. It has also been proposed to drive the doctor blade through the piston of a special pump into which a liquid or gaseous pressure medium is introduced. A smooth working is not guaranteed here; In addition, the arrangement 1 of a special pump is necessary here, which is usually not available in printing works.
Es ist die Aufgabe der Erfindung, diese Nachteile der bekannten Anordnungen zu vermeiden.
Erfindungsgemäß wird das Kurbelgetriebe, das die Rakel in ihrer Längsrichtung hin und her bewegt, durch einen Elektromotor
angetrieben, der seine Spannung durch einen Stromerzeuger erhält, dessen Spannung
bzw. Periodenzahl von der Drehzahl der Druckmaschine oder des die Druckmaschine antreibenden Motors abhängig ist.
Diese Anordnung bietet^ den Vorteil, daß der Antrieb unabhängig von der Rotationstiefdruckmaschine
selbst stillgesetzt werden kann; da die Elektromotoren außerordentlich klein ausfallen, so wird die Anordnung
billig und einfach. Die Anordnung besonderer Verbindungsteile fällt weg; der neue
Rakelantrieb beansprucht wenig Raum und läßt sich leicht an irgendeiner gewünschten
Stelle unterbringen.It is the object of the invention to avoid these disadvantages of the known arrangements. According to the invention, the crank mechanism, which moves the squeegee back and forth in its longitudinal direction, is driven by an electric motor, which receives its voltage from a power generator whose voltage or number of periods is dependent on the speed of the printing press or the motor driving the printing press.
This arrangement offers the advantage that the drive can be shut down independently of the rotogravure printing machine itself; since the electric motors are extremely small, the arrangement becomes cheap and simple. The arrangement of special connecting parts is omitted; the new squeegee drive takes up little space and can easily be accommodated in any desired location.
, Die Zeichnung zeigt ein Ausführungsbeispiel der Erfindung., The drawing shows an embodiment of the invention.
Das Rakelmesser ι wird durch das Kurbelgetriebe 2, 3 über ein Schneckengetriebe 4 angetrieben, dessen Schnecke ihren Antrieb durch einen Asynchronmotor 5 erhält. Dieser ist durch die Leitungen 6, 7, 8 an einem Drehstromerzeuger 9 angeschlossen, der mit dem Hauptmotor 10 unmittelbar gekuppelt ist, der die Rotationstiefdruckmaschine antreibt. Der Generator 9 kann seinen Antrieb auch von irgendeiner Stelle der Maschine selbst erhalten. The doctor blade ι is driven by the crank mechanism 2, 3 via a worm gear 4 driven, whose worm is driven by an asynchronous motor 5. This is connected through the lines 6, 7, 8 to a three-phase generator 9, which is connected to the Main motor 10 is directly coupled, which drives the rotogravure printing press. Of the Generator 9 can also get its drive from any point in the machine itself.
Die Ausführung ist jedoch nicht an einen Asynchronmotor gebunden. Der Antrieb kann beispielsweise auch durch einen Gleich- So Stromelektromotor erfolgen. Selbstverständlich kann man auch mehrere Motoren 5 von einem Generator aus speisen.However, the design is not tied to an asynchronous motor. The drive can for example also be done by a direct-current electric motor. Of course it is also possible to feed several motors 5 from one generator.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM132222D DE637688C (en) | Device for moving the doctor blade back and forth in its longitudinal direction through a crank mechanism in rotogravure printing machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM132222D DE637688C (en) | Device for moving the doctor blade back and forth in its longitudinal direction through a crank mechanism in rotogravure printing machines |
Publications (1)
Publication Number | Publication Date |
---|---|
DE637688C true DE637688C (en) | 1936-11-02 |
Family
ID=7332440
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEM132222D Expired DE637688C (en) | Device for moving the doctor blade back and forth in its longitudinal direction through a crank mechanism in rotogravure printing machines |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE637688C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE749890C (en) * | 1939-04-18 | 1945-01-25 | Mailaender Fa J G | Rotogravure printing machine for sheets with a squeegee moved back and forth by an eccentric |
-
0
- DE DEM132222D patent/DE637688C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE749890C (en) * | 1939-04-18 | 1945-01-25 | Mailaender Fa J G | Rotogravure printing machine for sheets with a squeegee moved back and forth by an eccentric |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE637688C (en) | Device for moving the doctor blade back and forth in its longitudinal direction through a crank mechanism in rotogravure printing machines | |
DE1287089B (en) | Drive for the inking unit of web-fed rotary printing machines | |
DE3104549C2 (en) | Lifting device | |
DE910252C (en) | Hydraulic gear shift system for motor vehicles | |
DE2332472B2 (en) | PARTIAL CUTTING MACHINE | |
DE583572C (en) | Drive for rotary printing machines with several printing units one behind the other | |
AT291905B (en) | Device for driving doctor blades | |
DE2107159C3 (en) | Drive device for tensioning carriages of peeling machines | |
DE563800C (en) | Rack drive unit for hydraulic presses driven by a pinion | |
DE583569C (en) | Drive for two-turn high-speed presses | |
DE620428C (en) | Electro-hydraulic device with a lifting cylinder and a driving element that moves up and down in this cylinder | |
DE945897C (en) | Servo system for motor vehicles | |
US2253120A (en) | Printing press | |
DE432994C (en) | Grinding machine for plate-like workpieces, especially veneers and the like. like | |
DE391366C (en) | Directly from the drive shaft driven inking unit for flat printing machines | |
DE643313C (en) | Control of flat-form printing presses with a printing cylinder that can be moved back and forth over the stationary foundation | |
DE485021C (en) | Forging press drive | |
DE935413C (en) | Internal combustion engine drive for ships via a summation gear, especially for fishing vessels | |
DE963593C (en) | Turntable drive for deep drilling rigs | |
DE498211C (en) | Automatic application and removal device for head presses | |
AT113011B (en) | Machine for printing and punching box blanks from a continuously moving cardboard strip. | |
DE459980C (en) | Inking unit on head printing presses with movable print head | |
DE732084C (en) | Drive device for reciprocating or up and down agitators, preferably for rotary filter troughs | |
DE706619C (en) | Wiper drive for steel engraving and similar printing machines | |
DE609066C (en) | Hydraulic drive device for the retractable undercarriages of aircraft |