EP0913254A1 - Apparat zum Drucken von Wellpappe - Google Patents

Apparat zum Drucken von Wellpappe Download PDF

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Publication number
EP0913254A1
EP0913254A1 EP97305024A EP97305024A EP0913254A1 EP 0913254 A1 EP0913254 A1 EP 0913254A1 EP 97305024 A EP97305024 A EP 97305024A EP 97305024 A EP97305024 A EP 97305024A EP 0913254 A1 EP0913254 A1 EP 0913254A1
Authority
EP
European Patent Office
Prior art keywords
print
board
cylinder
station
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.)
Withdrawn
Application number
EP97305024A
Other languages
English (en)
French (fr)
Inventor
Joseph J. Weishew
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.)
Langston Corp
Original Assignee
Langston Corp
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 Langston Corp filed Critical Langston Corp
Priority to EP97305024A priority Critical patent/EP0913254A1/de
Priority to AU82919/98A priority patent/AU8291998A/en
Priority to JP11508833A priority patent/JP2000502969A/ja
Priority to PCT/US1998/014027 priority patent/WO1999002345A1/en
Publication of EP0913254A1 publication Critical patent/EP0913254A1/de
Priority to US09/782,904 priority patent/US6412409B2/en
Withdrawn legal-status Critical Current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
    • B41F5/00—Rotary letterpress machines
    • B41F5/24—Rotary letterpress machines for flexographic printing

Definitions

  • This invention is concerned with apparatus for printing board or cut sections of board and particularly corrugated board, comprising a number of print stations through which the board is arranged to pass successively to receive print images from one or more of the print stations.
  • each print station commonly includes a print cylinder fitted with one or more printing plates for receiving ink from, for example, an anilox roll, and for transferring appropriate print images to the board or board sections.
  • the printing plate or plates on each print cylinder need to be replaceable to enable different printing requirements to be satisfied.
  • the present invention is concerned with an arrangement for enabling the printing plates to be changed on one print cylinder without requiring the entire printing apparatus to be stopped.
  • At least one of the print stations comprises a print cylinder mounted in a laterally displaceable frame which can be moved laterally (in a direction parallel to the cylinder axis) away from the board line, leaving in place substantially all the remaining parts of the print station, to allow changing of the printing plate or plates on the print cylinder while the printing apparatus can continue to operate with one or more of the other print stations.
  • Each print station is preferably a top printer: that is to say, it applies print to the upper surface of the board or board sections.
  • the print cylinder receives ink on its printing plate or plates from an anilox roll which remains in position (except for being moved slightly away from the print cylinder) when the print cylinder is displaced laterally to allow the printing plate or plates to be changed.
  • Each print station preferably includes conveyors, for example rollers, for conveying the board through the station, and those conveyors remain in place when the print cylinder is displaced laterally.
  • conveyors remain available to convey board through the print station so as to allow the printing apparatus to continue operating while any given print station is being altered in preparation for applying the print needed for a subsequent order.
  • This invention contrasts with, and is an improvement over, prior proposals, for example one providing for the entire printer or the top portion thereof to be lifted vertically to allow the operator (who must then work on an overhead gantry) to change the printing plates.
  • Another prior proposal involved displacing laterally the entire print station; this involves a number of problems, not least of which is the fact that the printing apparatus cannot then readily be kept in operation while one of the print stations is out of position.
  • the provision, in accordance with the present invention, for displacing essentially only the print cylinder and leaving the remainder of the printing station in position is a significant improvement over such prior proposals.
  • the print station comprises a print cylinder 10 carrying printing plates (not shown) for applying print images to corrugated board sections conveyed in the direction of the arrow 2.
  • Ink is applied to the printing plates by means of an anilox roll 12 which is uniformly coated with ink by means of a chambered doctor blade assembly 14.
  • Below the print cylinder 10 there is an impression roll 16 which holds the moving board sections against the printing plates on the cylinder 10.
  • Also included in the print station are a number of rolls 18 for conveying board sections in the form of box blanks through the print station.
  • the conveying rolls 18 are mainly located in a suction chamber 19 whereby suction in the chamber 19 draws the board section downwards into driving engagement with the rolls 18.
  • a different conveyor arrangement may be used. For example, it may involve rolls above the board line and a vacuum chamber above the board line for drawing the board sections upwards into engagement with the conveying rolls.
  • the print cylinder 10 is mounted in a frame 20 which includes an operator-side sub-frame 20A and a drive-side sub-frame 20B.
  • a bracket 22 secured to the top of the frame 20 carries a number of wheels 24 which can run between upper and lower rails or guides 25,27 to enable the frame 20 to be displaced laterally to carry the print cylinder 10 clear of the board line: that is to say, to the position shown in Figure 3.
  • the wheels may have V-shaped peripheral cross-sections and in that case the tracks would have corresponding V-sectioned grooves for locating the wheels.
  • the frame 10 When the print cylinder 10 is in position above the board line, the frame 10 may be secured by a clamping arrangement (not shown) which is released when the print cylinder is required to be displaced laterally to allow for printing plate changing. Before the print cylinder is displaced laterally it may be lifted slightly clear of the impression cylinder 18, for example by means incorporated in the frame 20.
  • the print cylinder 10 has an associated drive motor 26 which is an independent drive such as a servo motor.
  • the motor 26 preferably remains connected to the print cylinder when the cylinder is displaced laterally, as shown in Figure 3.
  • the conveyor rolls 18 may also have an independent drive; that is to say, independent of the drive to the anilox roll 12 and of the drive to the print cylinder.
  • the drive for the rolls 18 of each print station may be controlled to ensure proper registration of the print images applied to the board sections at successive print stations.
  • Figure 2 also shows an ink pail 28 from which, during printing, ink is pumped into the ink chamber of the assembly 14. Adjacent to the pail 28 there is a container 30 for washing liquid. A washing operation may be carried out on the anilox roll by pumping washing liquid into the chamber of the assembly 14 while the print cylinder is in the laterally displaced position for printing changing purposes. Separate washing provisions may be provided for the printing plates on the cylinder 10.
  • the print cylinder 10 may comprise mainly a composite non-metallic material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
EP97305024A 1997-07-09 1997-07-09 Apparat zum Drucken von Wellpappe Withdrawn EP0913254A1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP97305024A EP0913254A1 (de) 1997-07-09 1997-07-09 Apparat zum Drucken von Wellpappe
AU82919/98A AU8291998A (en) 1997-07-09 1998-07-07 Apparatus for printing corrugated board
JP11508833A JP2000502969A (ja) 1997-07-09 1998-07-07 段ボールに印刷するための装置
PCT/US1998/014027 WO1999002345A1 (en) 1997-07-09 1998-07-07 Apparatus for printing corrugated board
US09/782,904 US6412409B2 (en) 1997-07-09 2001-02-14 Apparatus and method for printing corrugated board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97305024A EP0913254A1 (de) 1997-07-09 1997-07-09 Apparat zum Drucken von Wellpappe

Publications (1)

Publication Number Publication Date
EP0913254A1 true EP0913254A1 (de) 1999-05-06

Family

ID=8229403

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97305024A Withdrawn EP0913254A1 (de) 1997-07-09 1997-07-09 Apparat zum Drucken von Wellpappe

Country Status (1)

Country Link
EP (1) EP0913254A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110303760A (zh) * 2019-07-24 2019-10-08 佛山市坚铌自动化设备有限公司 带自动清洗功能的汽车发动机缸垫印刷机
US20240009988A1 (en) * 2020-11-19 2024-01-11 Bobst Lyon Converting machine with height adjustment

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5385091A (en) * 1993-03-26 1995-01-31 Cuir; Jean-Pierre Sheet-fed print installation and a corresponding print line
EP0667235A1 (de) * 1994-02-09 1995-08-16 Tetra Laval Holdings & Finance SA Rotationsmaschine
DE4404758A1 (de) * 1994-02-15 1995-08-17 Roland Man Druckmasch Rollenrotationsdruckmaschine und Verfahren zum Wechseln der Bespannung eines Zylinders
US5490461A (en) * 1995-05-18 1996-02-13 Beaudoin; Leon W. Tag and label printing press
EP0737569A1 (de) * 1995-04-12 1996-10-16 Bielloni Castello S.p.A. Druckmaschine mit Vorrichtung zum schnellen Wechseln der Zylinderendhülsen des Farbwerkes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5385091A (en) * 1993-03-26 1995-01-31 Cuir; Jean-Pierre Sheet-fed print installation and a corresponding print line
EP0667235A1 (de) * 1994-02-09 1995-08-16 Tetra Laval Holdings & Finance SA Rotationsmaschine
DE4404758A1 (de) * 1994-02-15 1995-08-17 Roland Man Druckmasch Rollenrotationsdruckmaschine und Verfahren zum Wechseln der Bespannung eines Zylinders
EP0737569A1 (de) * 1995-04-12 1996-10-16 Bielloni Castello S.p.A. Druckmaschine mit Vorrichtung zum schnellen Wechseln der Zylinderendhülsen des Farbwerkes
US5490461A (en) * 1995-05-18 1996-02-13 Beaudoin; Leon W. Tag and label printing press

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110303760A (zh) * 2019-07-24 2019-10-08 佛山市坚铌自动化设备有限公司 带自动清洗功能的汽车发动机缸垫印刷机
US20240009988A1 (en) * 2020-11-19 2024-01-11 Bobst Lyon Converting machine with height adjustment
US12090748B2 (en) * 2020-11-19 2024-09-17 Bobst Lyon Converting machine with height adjustment

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