EP1637328A1 - Dispositif d'indexation, en particulier pour une machine d'impression - Google Patents

Dispositif d'indexation, en particulier pour une machine d'impression Download PDF

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Publication number
EP1637328A1
EP1637328A1 EP04022338A EP04022338A EP1637328A1 EP 1637328 A1 EP1637328 A1 EP 1637328A1 EP 04022338 A EP04022338 A EP 04022338A EP 04022338 A EP04022338 A EP 04022338A EP 1637328 A1 EP1637328 A1 EP 1637328A1
Authority
EP
European Patent Office
Prior art keywords
printing
turntable
machine
drive
rotation
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.)
Withdrawn
Application number
EP04022338A
Other languages
German (de)
English (en)
Inventor
Herbert Mayrhofer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Is-Drucksysteme Handels & Co KG GmbH
Original Assignee
Is-Drucksysteme Handels & Co KG GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Is-Drucksysteme Handels & Co KG GmbH filed Critical Is-Drucksysteme Handels & Co KG GmbH
Priority to EP04022338A priority Critical patent/EP1637328A1/fr
Publication of EP1637328A1 publication Critical patent/EP1637328A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B41F15/0863—Machines with a plurality of flat screens mounted on a turntable

Definitions

  • the invention relates to a rotary indexing device, in particular for a printing press, with a machine bed, a turntable which is rotatably mounted on the machine bed about a rotation axis, and an electric drive for stepwise rotary drive of the turntable.
  • Such rotary indexing devices are used for example in so-called carousel printing machines.
  • the materials to be printed are arranged on the supports of the turntable.
  • the individual print material is conveyed to the carriers by means of the turntable in an appointed cycle to printing stations, which are arranged along the circulation path of the carrier.
  • the print material is located at a new printing station, at which a desired inking can take place.
  • Such rotary indexing devices can also be used in other processing and manufacturing facilities as a conveyor, in which a work item is cyclically transported by further rotation to annularly arranged processing stations.
  • an electric motor is usually used, which transmits the necessary torque to the turntable via a gear arrangement, such as a gear transmission or a belt drive.
  • gear transmissions however, a certain gear play can never be completely avoided.
  • belt drives there is the problem of slippage and the stretching of the belt during the operating time. This game or this slip can lead to positioning inaccuracies in further rotation of the turntable.
  • the invention has for its object to provide a rotary indexing device, in particular for a printing press, specify, with which a reliable and positionally accurate rotary drive of the turntable is achieved.
  • the rotary indexing device is characterized in that the drive is arranged coaxially to the axis of rotation and that the rotor of the drive on the turntable and the stator of the drive is arranged on the machine bed.
  • the invention is based on the surprising idea to depart from the previous, conventional drive concept by means of gear.
  • a basic idea of the invention is to drive the turntable directly without the interposition of a gear arrangement by the electric motor.
  • the electric motor is integrated, so to speak, formed in the existing machine components.
  • various types of electric motors can be used for the device according to the invention.
  • a particularly good positioning accuracy is, however, achieved in that the drive is designed as a servo motor.
  • the rotary indexing device can do without an additional positioning or adjusting device.
  • a transducer device is provided for positioning the rotor. This may be, for example, a tape measure encoder system which is arranged along the rotor. As a result, the position of the rotor can be monitored and readjusted if necessary by controlling the drive motor.
  • the rotary indexing device according to the invention can be used in a variety of manufacturing equipment and machines. Particularly useful according to the invention is a printing machine, in particular a screen printing machine, which is provided with the rotary indexing device described above. Especially for high-quality printing machines, despite relatively high operating speeds, exact positioning is required in multicolor printing since otherwise the individual ink layers can not be applied to one another in order to create a clean color image.
  • An advantageous embodiment of a printing press according to the invention is that pallets for holding a printed material are provided on the supports of the turntable and that a printing plate is arranged with a plurality of printing stations on the machine bed.
  • the pressure plate is arranged with the star-shaped pressure stations above the cyclically driven turntable.
  • a preferred embodiment according to the invention is that by means of a lifting device of the turntable relative to the turntable axially displaceable in the direction the axis of rotation is.
  • the lifting device usually has one or more hydraulic cylinders, which raise and lower the pressure plate relative to the machine bed.
  • An embodiment of the printing machine according to the invention is that the lifting device is arranged within a machine shaft which is coaxial with the axis of rotation. Within the central machine shaft, the hydraulic cylinder may be located, which raises and lowers the pressure plate relative to the turntable.
  • the machine shaft is also provided with an axial guide for the pressure plate.
  • the individual printing stations of the printing plate each have a screen printing unit for printing a color.
  • the screen printing unit has a screen, which is prepared according to the printing pattern to be created.
  • a liquid pressure medium can be applied through the screen on the surface to be printed of the printed material.
  • the screen printing units are designed as screen printing modules and are detachably held in a receptacle of the pressure plate and that the screen printing modules with other work modules, especially drying modules are interchangeable.
  • the printing plate has eight printing stations and the turntable has ten pallets. During the printing process, there is a pallet with the print material at one of the eight stations.
  • a palette is on arranged the input station for receiving a new printed material and a pallet at the output station for removing a finished printed printed material.
  • two printing stations can be removed and replaced by drying units. These allow, for example, for special colors, such as water-soluble paints, an intermediate drying. For this purpose, one or more of the printing stations can be replaced by a corresponding drying module.
  • the printing press 50 comprises as essential components a machine bed 12, which is constructed from a central, approximately circular base frame 14 and three machine feet 16 attached thereto, a turntable 20 rotatable relative to the machine bed 12 and a pressure plate 40 arranged above it with printing stations 42 arranged in a star shape thereon.
  • a torsionally rigid machine shaft 18 is formed, which extends vertically upwards.
  • the turntable 20 is arranged, which in the illustrated embodiment has a conical bell 21 with a horizontally arranged base plate 23.
  • a plurality of rod-shaped struts 33 which support radially arranged rod-shaped support 32.
  • pallets 34 are arranged at the outwardly directed free ends, which serve to receive a printed material, such as a T-shirt.
  • the respectively associated printing stations 42 are attached to the printing plate 40.
  • the printing stations 42 are arranged as Siebdruckkmodule with a screen corresponding to the desired image, a paint applicator and a squeegee device for spreading the color on the screen for transferring the ink to the print material.
  • the pressure plate 40 is rotatably connected via a connecting hub 44 with a Hubschaft 46.
  • the stroke shaft 46 directed coaxially with the machine shaft 18 is axially displaceable relative to the machine bed 12 by means of a lifting device, not shown, in particular a hydraulic cylinder.
  • the printing plate 40 is lowered with the printing stations 42 on the arranged on the pallets 34 printed material, so that the desired print image can be transmitted to perform a printing operation.
  • the printing plate 40 is moved vertically with the printing stations 42 upwards, so that the printing stations 42 are spaced from the pallets 34.
  • a further rotation of the turntable 20 by a clock step with a predetermined angle of rotation so that then again by lowering the pressure plate, a further printing step can be performed.
  • a rotary indexing device 10 for driving the turntable 20, a rotary indexing device 10 according to the invention is provided in an annular recess of the machine bed 12.
  • the bottom plate 23 of the turntable 20 is attached directly to a disk-shaped rotor 28 of an electric motor.
  • an annular stator 26 with the electrical windings and the corresponding power supply is arranged on the machine bed 12.
  • the rotor 28 and the stator 26 form an electric drive 24 of the rotary indexing apparatus 10 according to the invention, as will be explained in more detail below in connection with FIGS. 2 and 3.
  • the plate-shaped rotor 28 is rotatably mounted about a rotation axis 22 relative to the machine bed 12 by means of a bearing 29.
  • the bearing 29 consists of two tapered roller bearings, which are built in an O-arrangement.
  • Firmly connected to the machine bed 12 is the annular stator 26 which has the windings, such as those provided for a servo motor.
  • the rotor 28 and the stator 26 are formed symmetrically to the axis of rotation 22.
  • the rotor 28 forms, as it were, a fixed unit with the turntable 20, so that the torque is transmitted directly to the turntable 20 by the electric drive 24 without the interposition of a transmission. As a result, any gear play and the relatively high cost of gearbox maintenance is avoided.
  • the top of the rotor 28 is formed as a substantially flat, horizontal surface, which can also form the turntable 20 directly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP04022338A 2004-09-20 2004-09-20 Dispositif d'indexation, en particulier pour une machine d'impression Withdrawn EP1637328A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04022338A EP1637328A1 (fr) 2004-09-20 2004-09-20 Dispositif d'indexation, en particulier pour une machine d'impression

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04022338A EP1637328A1 (fr) 2004-09-20 2004-09-20 Dispositif d'indexation, en particulier pour une machine d'impression

Publications (1)

Publication Number Publication Date
EP1637328A1 true EP1637328A1 (fr) 2006-03-22

Family

ID=34926616

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04022338A Withdrawn EP1637328A1 (fr) 2004-09-20 2004-09-20 Dispositif d'indexation, en particulier pour une machine d'impression

Country Status (1)

Country Link
EP (1) EP1637328A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1955847A1 (fr) * 2007-02-09 2008-08-13 Andrea Mayrhofer Presse à carrousel et procédé d'impression
DE202009016623U1 (de) 2009-12-07 2010-04-01 Mayrhofer, Andrea Druckmaschine
ITRE20090057A1 (it) * 2009-06-15 2010-12-16 Omso Officina Macchine Per Stampa Su Oggetti S Giostra rotante per macchina da stampa di tipo rotativo

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4138479A1 (de) * 1991-11-22 1993-06-03 Baumueller Nuernberg Gmbh Verfahren und anordnung fuer einen elektromotor zum antrieb eines drehkoerpers, insbesondere des druckgebenden zylinders einer druckmaschine
CA2109061A1 (fr) * 1993-10-22 1995-04-23 Steve Zelko Machine d'impression au cadre
DE19622230A1 (de) 1996-06-03 1997-12-04 Schenk Gmbh Vorrichtung zum Bedrucken von Materialien, insbesondere textilen Werkstoffen, Keramik, Papier oder dergleichen
US5913264A (en) * 1993-07-06 1999-06-22 Eppinger; Otto Richard Screen printing machine with rotor and stator guiding means
US6408745B1 (en) * 2000-01-06 2002-06-25 Anatol Incorporated Variable height print table arrangement for a screen printing apparatus
US20030182795A1 (en) * 2002-02-06 2003-10-02 Budig Peter Klaus Assembly machine
US6766735B1 (en) * 2003-05-05 2004-07-27 Heinz Walz Gmbh Printing apparatus for objects to be printed

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4138479A1 (de) * 1991-11-22 1993-06-03 Baumueller Nuernberg Gmbh Verfahren und anordnung fuer einen elektromotor zum antrieb eines drehkoerpers, insbesondere des druckgebenden zylinders einer druckmaschine
US5913264A (en) * 1993-07-06 1999-06-22 Eppinger; Otto Richard Screen printing machine with rotor and stator guiding means
CA2109061A1 (fr) * 1993-10-22 1995-04-23 Steve Zelko Machine d'impression au cadre
DE19622230A1 (de) 1996-06-03 1997-12-04 Schenk Gmbh Vorrichtung zum Bedrucken von Materialien, insbesondere textilen Werkstoffen, Keramik, Papier oder dergleichen
US6408745B1 (en) * 2000-01-06 2002-06-25 Anatol Incorporated Variable height print table arrangement for a screen printing apparatus
US20030182795A1 (en) * 2002-02-06 2003-10-02 Budig Peter Klaus Assembly machine
US6766735B1 (en) * 2003-05-05 2004-07-27 Heinz Walz Gmbh Printing apparatus for objects to be printed

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1955847A1 (fr) * 2007-02-09 2008-08-13 Andrea Mayrhofer Presse à carrousel et procédé d'impression
WO2008095604A1 (fr) * 2007-02-09 2008-08-14 Andrea Mayrhofer Imprimante à carrousel et procédé d'impression
ITRE20090057A1 (it) * 2009-06-15 2010-12-16 Omso Officina Macchine Per Stampa Su Oggetti S Giostra rotante per macchina da stampa di tipo rotativo
EP2263876A1 (fr) * 2009-06-15 2010-12-22 Omso Decomac - Societa' a Responsabilita' Limitata Carrousel rotatif pour machines d'impression rotatives
US8408121B2 (en) 2009-06-15 2013-04-02 Decomac-Sociata' a Responsabilita' Limitata Rotating carousel for rotary printing machines
DE202009016623U1 (de) 2009-12-07 2010-04-01 Mayrhofer, Andrea Druckmaschine
WO2011069596A1 (fr) 2009-12-07 2011-06-16 Andrea Mayrhofer Imprimante

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