EP3243779A1 - Bande de transport pour feuilles d'impression - Google Patents

Bande de transport pour feuilles d'impression Download PDF

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Publication number
EP3243779A1
EP3243779A1 EP17165699.4A EP17165699A EP3243779A1 EP 3243779 A1 EP3243779 A1 EP 3243779A1 EP 17165699 A EP17165699 A EP 17165699A EP 3243779 A1 EP3243779 A1 EP 3243779A1
Authority
EP
European Patent Office
Prior art keywords
conveyor belt
projections
belt according
vacuum
printed sheets
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.)
Granted
Application number
EP17165699.4A
Other languages
German (de)
English (en)
Other versions
EP3243779B1 (fr
Inventor
Markus Möhringer
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP3243779A1 publication Critical patent/EP3243779A1/fr
Application granted granted Critical
Publication of EP3243779B1 publication Critical patent/EP3243779B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/08—Conveyor bands or like feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
    • B65H29/241—Suction devices
    • B65H29/242—Suction bands or belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/007—Conveyor belts or like feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0085—Using suction for maintaining printing material flat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/22—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
    • B65H5/222—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices
    • B65H5/224—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices by suction belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/50—Surface of the elements in contact with the forwarded or guided material
    • B65H2404/51—Cross section, i.e. section perpendicular to the direction of displacement
    • B65H2404/513—Cross section, i.e. section perpendicular to the direction of displacement with limited number of active areas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/32—Suction belts
    • B65H2406/322—Suction distributing means
    • B65H2406/3223—Suction distributing means details of the openings in the belt, e.g. shape, distribution

Definitions

  • the present invention relates to a conveyor belt for printing sheet having vacuum openings.
  • the position of the printed sheets is assigned importance to each other, but not the position of the printed sheets to the vacuum openings. There is a risk that the sheet edges will be deformed when they lie on the vacuum openings. This risk is particularly high for sheets of thin paper.
  • the object of the invention is to provide a suitable for printing sheet of thin paper conveyor belt.
  • a conveyor belt for printing sheets comprising troughs, in each of which projections for supporting the printing sheet and a vacuum opening are arranged.
  • the vacuum opening is arranged between the projections.
  • the projections are arranged in uniform distribution around the vacuum opening.
  • webs are arranged between the wells, which together form a grid.
  • the projections terminate flush with the webs.
  • the troughs each have an edge which forms a polygonal contour.
  • the polygonal contour is square.
  • the polygonal contour has rounded inner corners.
  • the depressions and projections are formed by an etching structure.
  • the conveyor belt is a steel strip.
  • a printing press 1 is shown in a section.
  • the printing machine 1 comprises a printhead for inkjet printing, which is not shown in the drawing.
  • the printing machine 1 comprises a transport device 2 for transporting printed sheets 3, which can be seen in the cutout.
  • the Transport device 2 transports the printing sheet 3 past the print head, which prints the printed sheet 3.
  • the transport device 2 comprises a conveyor belt 4, on whose upper run 5 the printed sheets 3 lie during their transport.
  • the conveyor belt 4 is endless and runs around two rollers 6, one of which drives the conveyor belt 4 and the other deflects the conveyor belt 4.
  • An arrow 7 indicates a direction 7 which corresponds to the direction of rotation of the conveyor belt 4 and the transport direction of the printed sheets 3.
  • a baffle 8 for guiding the printing sheet 3 is arranged in each case.
  • the transport device 2 takes over the printed sheets 3 from the one baffle 8 and outputs the printed sheets 3 after their printing on the other baffle 8 from.
  • a suction box 9 is arranged, which is connected to a vacuum source 10, which is shown symbolically.
  • the strand 5 lies with its underside against the suction air box 9.
  • the top 5 of the suction air box 9 facing the strand 5 has a window which is not shown in the drawing.
  • the vacuum openings 11 form.
  • the vacuum openings 9 passing therethrough are subjected to vacuum by being temporarily connected fluidically with the Saugluftario 10.
  • the formats of the printing sheets 3 can differ from each other not only in the format length to be measured in the direction 7 but also in the format width to be measured perpendicular to the direction 7. In the example shown in the drawing, the formats of the printing sheets 3 differ only in the format length from each other.
  • the transport device 2 has a format width adjusting device, which is not shown in the drawing.
  • the format width adjuster is used for format widths smaller than the maximum size. With such format widths, there are vacuum covers 11 which are not covered by the printed sheet 3 and which, viewed in the direction 7, lie to the left and to the right of the printed sheet 3. In order that such vacuum holes 11 not covered by the printing sheet 3 do not draw a misfeed, the format width adjusting means becomes used. With the format width adjuster, the outside of the format width lying vacuum openings 11, which are not covered on the outside of the conveyor belt 4 from the sheet 3, on the inside of the conveyor belt 4, for example, by two slidable aperture of the format width adjuster covered.
  • the conveyor belt 4 is made of metal, preferably of steel, which is advantageous in terms of the production of the surface structure as an etching structure 16.
  • the surface structure is a relief and is formed by a grid of wells or troughs 12.
  • the grid width of the grid is exaggerated in the drawing, so that the details are better recognizable.
  • the raster width for example, in sheet 3 with a format length of about 250 mm - 5 mm.
  • the ruling is the distance between the center of a trough 12 and the center of the adjacent trough 12.
  • the depth of the troughs 12 may be, for example, 0.05 mm to 0.10 mm for a thickness of the conveyor belt 4 (strip thickness) of 0.30 mm.
  • each well 12 In the bottom of each well 12, one of the vacuum openings 11 is centrally introduced. Between the troughs 12 extending sealing lips or webs 13, which together form a grid or grid. Each trough 12 is completely surrounded by webs 13, which form the side walls of the trough 12.
  • the webs 13 form the annular edge of the respective trough 12.
  • This edge could have a circular contour, however, the graphically illustrated variant of the edge with polygonal contour 14 with respect to a uniformly thin over the entire web length formation of the webs 13 more advantageous.
  • the uniformly thin formation is in turn advantageous in terms of maximizing the open area portion of the troughs 12 and thus a secure pneumatic holding the signature 3.
  • the contour 14 is quadrangular, especially rectangular or square.
  • the trough 12 may have a diamond shape rhombischem edge or a Honeycomb shape with hexagonal edge have. For all possible ring shapes of the edge, z.
  • the ring shape As the square ring shape, it is important for the formation of the vacuum in the trough 12 that the ring shape without interruption, that is, runs as a closed ring. In all cases, it is advantageous in terms of stability, when the inner corners 15 of the contour 14 are rounded.
  • each trough 12 a plurality of pillars or projections 18 are arranged in equal distribution around the vacuum opening 11 around.
  • the projections 18 are formed by pillars of material left standing by the etching and protrude from the bottom of the trough 12. Specifically, there are four projections 18 per trough 12, the projections 18 being arranged on the vertices of an imaginary square.
  • the projections 18 and the vacuum opening 11 of the respective trough 12 are arranged on the two imaginary diagonals of the square contour 14, wherein the vacuum opening 11 is located at the intersection of the two diagonals.
  • each projection 18 protrudes exactly to the transport plane 17 and thus ends flush with the webs 13.
  • the planar upper sides of the projections 18 and the webs 13 together form the outer surface of the conveyor belt 4, on which the printed sheets 3 lie.
  • the projections 18 serve to support the printed sheets 13 at the edges or edges.
  • the projections 18 each have a circular cross-section, wherein the surface of this cross-section is larger than the also circular cross-sectional area of the vacuum opening 11.
  • the projections 18 are cylindrical.
  • the wells 12 are arranged in longitudinal rows and transverse rows of the grid.
  • the longitudinal rows are parallel to the direction 7 of the transport and the transverse rows are perpendicular to the longitudinal rows and the direction 7.
  • the sheets 3 are transported such that each of the trailing edge of a preceding sheet 3 and the leading edge of a subsequent sheet 3, the wells 12 a and the same transverse row overlap or in these wells 12th protrude.
  • a distance is maintained between the leading edge and the trailing edge of the adjacent signature 3.
  • the sheet edges and the corners of the sheet are securely held on the conveyor belt 4 and there is no risk of erecting or turning over Edges and corners. Raised or folded edges and corners would otherwise pose a threat to the inkjet printhead, with the nozzle plate of which could collide as it passes, thereby damaging the nozzle plate.
  • the conveyor belt 4 according to the invention is therefore particularly advantageously used in printing presses 1 with an ink-jet printhead, which can approach particularly close to the strand 5 in the conveyor belt 4 according to the invention, which in turn is advantageous in terms of print quality.
  • the two per vents 12 provided vacuum openings 11 have a center offset from each other, which is in the transverse direction of the conveyor belt 4, that is to measure perpendicular to the direction 7 (circulation direction).
  • the centers of the two vacuum openings 11 may additionally be offset in direction 7 of the circulation of the conveyor belt 4 to each other, but they do not necessarily have.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
EP17165699.4A 2016-05-11 2017-04-10 Bande de transport pour feuilles d'impression Active EP3243779B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016208074.1A DE102016208074A1 (de) 2016-05-11 2016-05-11 Förderband für Druckbogen

Publications (2)

Publication Number Publication Date
EP3243779A1 true EP3243779A1 (fr) 2017-11-15
EP3243779B1 EP3243779B1 (fr) 2020-07-15

Family

ID=58536816

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17165699.4A Active EP3243779B1 (fr) 2016-05-11 2017-04-10 Bande de transport pour feuilles d'impression

Country Status (3)

Country Link
EP (1) EP3243779B1 (fr)
CN (1) CN107379790B (fr)
DE (1) DE102016208074A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4121300A4 (fr) * 2019-07-19 2024-05-29 Sam Security Printing Matbaa Anonim Sirketi Système d'impression de matériaux de sécurité et de documents anti-falsification à impression en relief et procédé associé
DE102020125412A1 (de) 2020-09-29 2022-03-31 Koenig & Bauer Ag Vorrichtung zum Transport von jeweils bis an ihre auf ihre Transportrichtung bezogene Vorderkante und/oder Hinterkante lackierten Blechtafeln
DE202023104392U1 (de) * 2023-08-03 2024-11-05 Neuhäuser GmbH Fördereinrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55176246U (fr) * 1979-06-07 1980-12-17
WO1989008821A1 (fr) * 1988-03-11 1989-09-21 Rastergraphics, Inc. Systeme de transport et de stabilisation de papier pour imprimante ou traceur a ligne de trame ou analogue
WO1997049554A1 (fr) * 1996-06-25 1997-12-31 Marquip, Inc. Entrainement de bandes sous vide dans une machine a carton ondule double face
DE10010970A1 (de) * 1999-03-26 2000-10-12 Heidelberger Druckmasch Ag Saugbandförderer für eine Bogen verarbeitende Maschine
DE102009048928A1 (de) 2009-10-10 2011-04-14 Steinemann Technology Ag Vorrichtung zur Bogenführung in einem Tintenstrahldrucker
EP2610064A1 (fr) * 2011-12-27 2013-07-03 Fujifilm Corporation Appareil d'enregistrement à jet d'encre

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2969869A (en) * 1957-09-12 1961-01-31 Karl A Klingler Vacuum delivery belt
US3861669A (en) * 1972-06-15 1975-01-21 Tokyo Shibaura Electric Co Apparatus for feeding sheet-like articles from a stack of articles
US3889801A (en) * 1972-10-26 1975-06-17 Bell & Howell Co Vacuum conveyor belt with air bearing
DE4406739C2 (de) * 1994-03-02 1997-06-19 Heidelberger Druckmasch Ag Vorrichtung zum gleichmäßigen Ansaugen eines flächigen Körpers auf einer Unterlage, insbesondere für Druckmaschinen und deren Zusatzgeräte
DE29515857U1 (de) * 1995-10-06 1995-12-07 RRG Industrietechnik GmbH, 45470 Mülheim Fördervorrichtung
DE19839314B4 (de) * 1998-02-18 2007-03-01 Heidelberger Druckmaschinen Ag Verfahren und Vorrichtung zum Transport von Bogen mittels mindestens eines Transportbandes, an welchem die Bogen auf dem Transportweg fixiert werden
WO2000034158A1 (fr) * 1998-12-08 2000-06-15 The Langston Corporation Courroie de transfert assistee par depression
KR100788660B1 (ko) * 2005-01-18 2007-12-26 삼성전자주식회사 화상입출력장치 및 방법
JP2008080526A (ja) * 2006-09-26 2008-04-10 Brother Ind Ltd 液体噴射装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55176246U (fr) * 1979-06-07 1980-12-17
WO1989008821A1 (fr) * 1988-03-11 1989-09-21 Rastergraphics, Inc. Systeme de transport et de stabilisation de papier pour imprimante ou traceur a ligne de trame ou analogue
WO1997049554A1 (fr) * 1996-06-25 1997-12-31 Marquip, Inc. Entrainement de bandes sous vide dans une machine a carton ondule double face
DE10010970A1 (de) * 1999-03-26 2000-10-12 Heidelberger Druckmasch Ag Saugbandförderer für eine Bogen verarbeitende Maschine
DE102009048928A1 (de) 2009-10-10 2011-04-14 Steinemann Technology Ag Vorrichtung zur Bogenführung in einem Tintenstrahldrucker
EP2610064A1 (fr) * 2011-12-27 2013-07-03 Fujifilm Corporation Appareil d'enregistrement à jet d'encre

Also Published As

Publication number Publication date
EP3243779B1 (fr) 2020-07-15
CN107379790B (zh) 2020-06-19
CN107379790A (zh) 2017-11-24
DE102016208074A1 (de) 2017-11-16

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