EP3243779B1 - Conveyor belt for printed sheets - Google Patents
Conveyor belt for printed sheets Download PDFInfo
- Publication number
- EP3243779B1 EP3243779B1 EP17165699.4A EP17165699A EP3243779B1 EP 3243779 B1 EP3243779 B1 EP 3243779B1 EP 17165699 A EP17165699 A EP 17165699A EP 3243779 B1 EP3243779 B1 EP 3243779B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- conveyor belt
- printed sheets
- vacuum
- protrusions
- webs
- 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.)
- Active
Links
- 238000005530 etching Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 230000032258 transport Effects 0.000 description 18
- 238000007639 printing Methods 0.000 description 14
- 238000011161 development Methods 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 5
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
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 printed sheets which has vacuum openings. With such conveyor belts, printed sheets are transported in printing machines. The vacuum openings serve to hold the printed sheets.
- One problem is that the format of the printed sheets can vary, for example from print job to print job. This can lead to more or fewer vacuum openings being covered by the printed sheets. Uncovered vacuum openings are unfavorable with regard to incorrect air and turbulence.
- EP 2 610 064 A1 describes a conveyor belt for printed sheets according to the preamble of claim 1, which has troughs and vacuum openings arranged therein.
- WO 97/49554 A1 describes a web conveyor belt that has a series of openings that can be acted upon by vacuum.
- the band includes support elements for the web.
- JPS55176246 U describes a conveyor belt for sheets that has troughs, each with a projection and two vacuum openings therein.
- the object of the invention is to provide a conveyor belt suitable for printing sheets made of thin paper.
- the troughs ensure a large and therefore safe suction.
- the projections prevent the arch edge from sagging too much in the respective trough.
- the protrusions end 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 printing press 1 comprises a print head for inkjet printing, which is not shown in the drawing.
- the printing press 1 comprises a transport device 2 for transporting printed sheets 3, which can be seen in the detail.
- the Transport device 2 transports the printed sheets 3 past the print head, which prints the printed sheets 3.
- the transport device 2 comprises a conveyor belt 4, on the upper run 5 of which 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 which corresponds to the direction of rotation of the conveyor belt 4 and the direction of transport of the printed sheets 3.
- a guide plate 8 for guiding the printing sheets 3 is arranged in front of and behind the transport device 2.
- the transport device 2 takes over the printed sheets 3 from one guide plate 8 and releases the printed sheets 3 after their printing to the other guide plate 8.
- a suction air box 9 is arranged between the two rollers 6 and is connected to a vacuum source 10, which is shown symbolically.
- the underside of the strand 5 lies against the suction air box 9.
- the top of the suction air box 9 facing the run 5 has a window which is not shown in the drawing.
- Through holes are formed in the conveyor belt 4, which form vacuum openings 11. The vacuum openings 9 running past it are acted upon by vacuum via the window mentioned in the suction air box 9 by temporarily connecting them to the suction air source 10 in terms of flow technology.
- the formats of the printed sheets 3 can differ not only in the format length that is to be measured in the direction 7, but also in the format width that is to be measured perpendicular to the direction 7. In the example shown in the drawing, the formats of the printed sheets 3 differ from one another only in the format length.
- the transport device 2 has a format width setting device, which is not shown in the drawing.
- the format width setting device is used for format widths that are smaller than the maximum format. With such format widths, there are vacuum openings 11 which are not covered by the printing sheet 3 and which, viewed in the direction 7, are to the left and right of the printing sheet 3.
- the format width adjustment device is used to ensure that such vacuum openings 11, which are not covered by the printed sheet 3, do not draw in incorrect air used. With the format width adjustment device, the vacuum openings 11 lying outside the format width, which are not covered on the outside of the conveyor belt 4 by the printed sheet 3, are covered on the inside of the conveyor belt 4, for example by two displaceable screens of the format width adjustment device.
- the conveyor belt 4 consists of metal, preferably steel, which is advantageous with regard to the production of the surface structure as an etching structure 16.
- the surface structure is a relief and is formed by a grid of cells or troughs 12. The grid size of the grid is exaggerated in the drawing so that the details are easier to see.
- the raster width can be 5 mm, for example with printed sheet 3 with a format length of approx. 250 mm.
- the raster width means the distance between the center of a trough 12 and the center of the adjacent trough 12.
- the depth of the troughs 12 can be 0.05 mm to 0.10 mm, for example with a thickness of the conveyor belt 4 (belt thickness) of 0.30 mm.
- One of the vacuum openings 11 is made centrally in the bottom of each trough 12. Sealing lips or webs 13, which together form a grid or grid, run between the troughs 12. Each trough 12 is bounded 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, but the variant of the edge with a polygonal contour 14 shown in the drawing is a thin construction of the webs that is uniformly thin over the entire web length 13 more advantageous.
- the uniformly thin design is in turn advantageous in terms of maximizing the open area portion of the troughs 12 and thus a secure pneumatic holding of the printed sheets 3.
- the contour 14 is square, especially rectangular or square.
- the trough 12 can be a diamond shape with a rhombic edge or one Have a honeycomb shape with a hexagonal edge. With all possible ring shapes of the edge, e.g.
- each trough 12 a plurality of supports or projections 18 are arranged in a uniform distribution around the vacuum opening 11.
- the projections 18 are formed by material columns which have remained during the etching and protrude from the bottom of the depression 12. Specifically, there are four projections 18 per depression 12, the projections 18 being arranged on the corner points 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, the vacuum opening 11 being located at the intersection of the two diagonals.
- each projection 18 extends exactly to the transport plane 17 and thus ends flush with the webs 13.
- the flat tops 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 on their edges or edges.
- the projections 18 each have a circular cross section, the area of this cross section being larger than the likewise circular cross sectional area of the vacuum opening 11.
- the projections 18 are cylindrical.
- the troughs 12 are arranged in longitudinal rows and transverse rows of the grid.
- the longitudinal rows run parallel to the direction 7 of the transport and the transverse rows run perpendicular to the longitudinal rows and to the direction 7.
- the printing sheets 3 are transported in such a way that the trailing edge of a preceding printing sheet 3 and the front edge of a subsequent printing sheet 3 enter the troughs 12 and overlap or into the same transverse row 12 protrude.
- a distance is maintained between the front edge and the rear edge of the adjacent printed sheets 3.
- the sheet edges and also the sheet corners are securely held on the conveyor belt 4 and there is no risk of erecting or turning the Edges and corners. Raised or folded edges and corners would otherwise pose a danger to the inkjet printhead, the nozzle plate of which could collide as it passed, which could damage the nozzle plate.
- the conveyor belt 4 according to the invention can therefore be used particularly advantageously in printing presses 1 with an ink jet print head, which can reach particularly close to the run 5 in the conveyor belt 4 according to the invention, which in turn is advantageous in terms of print quality.
- two vacuum openings 11 are provided per well 12, which are introduced into the bottom of the well 12. This means that an additional vacuum opening 11 is added to the vacuum opening 11 shown in the drawing.
- the two vacuum openings 11 provided per trough 12 have a center offset to one another, which is to be measured in the transverse direction of the conveyor belt 4, that is to say perpendicular to the direction 7 (direction of rotation).
- the centers of the two vacuum openings 11 can also be offset from one another in the direction 7 of the circulation of the conveyor belt 4, but they do not necessarily have to be.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
Description
Vorliegende Erfindung betrifft ein Förderband für Druckbogen, das Vakuumöffnungen hat. Mit solchen Förderbändern werden Druckbogen in Druckmaschinen transportiert. Die Vakuumöffnungen dienen zum Halten der Druckbogen.The present invention relates to a conveyor belt for printed sheets which has vacuum openings. With such conveyor belts, printed sheets are transported in printing machines. The vacuum openings serve to hold the printed sheets.
Ein Problem ist, dass das Format der Druckbogen, zum Beispiel von Druckauftrag zu Druckauftrag, verschieden sein kann. Das kann dazu führen, dass von den Druckbogen mehr oder weniger Vakuumöffnungen bedeckt werden. Unbedeckte Vakuumöffnungen sind bezüglich Fehlluft und Verwirbelungen ungünstig.One problem is that the format of the printed sheets can vary, for example from print job to print job. This can lead to more or fewer vacuum openings being covered by the printed sheets. Uncovered vacuum openings are unfavorable with regard to incorrect air and turbulence.
In
Beim Stand der Technik wird zwar der Lage der Druckbogen zueinander Bedeutung beigemessen, nicht jedoch der Lage der Druckbogen zu den Vakuumöffnungen. Es besteht die Gefahr, dass die Bogenkanten verformt werden, wenn sie auf den Vakuumöffnungen liegen. Diese Gefahr ist bei Druckbogen aus dünnem Papier besonders hoch.In the prior art, the position of the printed sheets relative to one another is given importance, but not the position of the printed sheets relative to the vacuum openings. There is a risk that the sheet edges will be deformed if they lie on the vacuum openings. This risk is particularly high for printed sheets made of thin paper.
In
In
In
In
Aufgabe der Erfindung ist, ein für Druckbogen aus dünnem Papier geeignetes Förderband zu schaffen.The object of the invention is to provide a conveyor belt suitable for printing sheets made of thin paper.
Diese Aufgabe wird gelöst durch ein Förderband mit den Merkmalen des Anspruchs 1.This object is achieved by a conveyor belt with the features of
Durch die Mulden ist ein großflächiges und somit sicheres Ansaugen gewährleistet. Die Vorsprünge verhindern, dass die Bogenkante in der jeweiligen Mulde zu stark durchhängt.The troughs ensure a large and therefore safe suction. The projections prevent the arch edge from sagging too much in the respective trough.
Bei einer Weiterbildung enden die Vorsprünge bündig mit den Stegen. Bei einer weiteren Weiterbildung haben die Mulden jeweils einen Rand, der eine polygonale Kontur bildet. Bei einer weiteren Weiterbildung ist die polygonale Kontur quadratisch. Bei einer weiteren Weiterbildung hat die polygonale Kontur abgerundete Innenecken.In a further development, the protrusions end flush with the webs. In a further development, the troughs each have an edge which forms a polygonal contour. In a further development, the polygonal contour is square. In a further development, the polygonal contour has rounded inner corners.
Weitere Weiterbildungen des erfindungsgemäßen Förderbandes ergeben sich aus der folgenden Beschreibung eines Ausführungsbeispiels und der dazugehörigen Zeichnung.Further developments of the conveyor belt according to the invention result from the following description of an exemplary embodiment and the associated drawing.
Darin zeigt:
- Figur 1:
- eine Transporteinrichtung für Druckbogen in der Seitenansicht,
- Figur 2:
- die Transporteinrichtung aus
in der Draufsicht,Figur 1 - Figur 3:
- ein Förderband der Transporteinrichtung in vergrößerter Darstellung,
- Figur 4:
- einen Querschnitt durch das Förderband, entlang der Schnittlinie IV in
undFigur 3 - Figur 5:
- einen anderen Querschnitt durch das Förderband, entlang der Schnittlinie V in
.Figur 3
- Figure 1:
- a transport device for printed sheets in side view,
- Figure 2:
- the transport device
Figure 1 in the top view, - Figure 3:
- a conveyor belt of the transport device in an enlarged view,
- Figure 4:
- a cross section through the conveyor belt, along the section line IV in
Figure 3 and - Figure 5:
- another cross section through the conveyor belt, along the section line V in
Figure 3 .
In den
Die Transporteinrichtung 2 umfasst ein Förderband 4, auf dessen oberem Trum 5 die Druckbogen 3 während ihres Transports liegen. Das Förderband 4 ist endlos und läuft um zwei Rollen 6, von denen die eine das Förderband 4 antreibt und die andere das Förderband 4 umlenkt. Mit einem Pfeil ist eine Richtung 7 angegeben, die der Umlaufrichtung des Förderbandes 4 und der Transportrichtung der Druckbogen 3 entspricht. Vor und hinter der Transporteinrichtung 2 ist jeweils ein Leitblech 8 zum Leiten der Druckbogen 3 angeordnet. Die Transporteinrichtung 2 übernimmt die Druckbogen 3 von dem einen Leitblech 8 und gibt die Druckbogen 3 nach deren Bedruckung an das andere Leitblech 8 ab.The transport device 2 comprises a
Zwischen den beiden Rollen 6 ist ein Saugluftkasten 9 angeordnet, der an eine Vakuumquelle 10 angeschlossen ist, die symbolisch dargestellt ist. Das Trum 5 liegt mit seiner Unterseite an dem Saugluftkasten 9 an. Die zu dem Trum 5 weisende Oberseite des Saugluftkastens 9 hat ein Fenster, das zeichnerisch nicht mit dargestellt ist. In das Förderband 4 sind Durchgangsbohrungen eingebracht, die Vakuumöffnungen 11 bilden. Über das erwähnte Fenster im Saugluftkasten 9 werden die daran vorbeilaufenden Vakuumöffnungen 9 mit Vakuum beaufschlagt, indem sie vorübergehend mit der Saugluftquelle 10 strömungstechnisch verbunden werden.A
Die Formate der Druckbogen 3 können sich nicht nur in der Formatlänge, die in der Richtung 7 zu messen ist, sondern auch in der Formatbreite, die senkrecht zur Richtung 7 zu messen ist, voneinander unterscheiden. Im zeichnerisch dargestellten Beispiel unterscheiden sich die Formate der Druckbogen 3 nur in der Formatlänge voneinander. Die Transporteinrichtung 2 hat eine Formatbreiten-Einstelleinrichtung, die zeichnerisch nicht mit dargestellt ist. Die Formatbreiten-Einstelleinrichtung wird eingesetzt bei Formatbreiten, die kleiner als das Maximalformat sind. Bei solchen Formatbreiten gibt es vom Druckbogen 3 nicht abgedeckte Vakuumöffnungen 11, die in Richtung 7 gesehen, links und rechts vom Druckbogen 3 liegen. Damit solche vom Druckbogen 3 nicht abgedeckten Vakuumöffnungen 11 keine Fehlluft ziehen, wird die Formatbreiten-Einstelleinrichtung eingesetzt. Mit der Formatbreiten-Einstelleinrichtung werden die außerhalb der Formatbreite liegenden Vakuumöffnungen 11, die auf der Außenseite des Förderbandes 4 vom Druckbogen 3 nicht abgedeckt sind, auf der Innenseite des Förderbandes 4, zum Beispiel durch zwei verschiebbare Blenden der Formatbreiten-Einstelleinrichtung, abgedeckt.The formats of the printed
In den
In den Boden jeder Mulde 12 ist zentral eine der Vakuumöffnungen 11 eingebracht. Zwischen den Mulden 12 verlaufen Dichtungslippen oder Stege 13, die zusammen ein Gitternetz oder Rastergitter bilden. Jede Mulde 12 ist rundum von Stegen 13 begrenzt, welche die Seitenwände der Mulde 12 bilden.One of the
In der Transportebene 17 der Druckbogen 3 bilden die Stege 13 den ringförmigen Rand der jeweiligen Mulde 12. Dieser Rand könnte eine kreisförmige Kontur haben, jedoch ist die zeichnerisch dargestellte Variante des Randes mit polygonaler Kontur 14 hinsichtlich einer über die ganze Steglänge gleichmäßig dünnen Ausbildung der Stege 13 vorteilhafter. Die gleichmäßig dünne Ausbildung ist wiederum hinsichtlich der Maximierung des offenen Flächenanteils der Mulden 12 und somit eines sicheren pneumatischen Haltens der Druckbogen 3 vorteilhaft. Im zeichnerisch dargestellten Beispiel ist die Kontur 14 viereckig, speziell rechteckig oder quadratisch. Bei zeichnerisch nicht dargestellten Varianten kann die Mulde 12 eine Rautenform mit rhombischem Rand oder eine Wabenform mit hexagonalem Rand haben. Bei allen möglichen Ringformen des Randes, z. B. der quadratischen Ringform, ist es für die Ausbildung des Vakuums in der Mulde 12 wichtig, dass die Ringform ohne Unterbrechung ist, das heißt, als geschlossener Ring verläuft. In allen Fällen ist es hinsichtlich der Stabilität vorteilhaft, wenn die Innenecken 15 der Kontur 14 abgerundet sind.In the
In jeder Mulde 12 sind mehrere Stützen oder Vorsprünge 18 in Gleichverteilung um die Vakuumöffnung 11 herum angeordnet. Die Vorsprünge 18 werden durch beim Ätzen stehengebliebene Materialsäulen gebildet und ragen aus dem Boden der Mulde 12. Speziell sind vier Vorsprünge 18 pro Mulde 12 vorhanden, wobei die Vorsprünge 18 auf den Eckpunkten eines imaginären Quadrats angeordnet sind. Die Vorsprünge 18 und die Vakuumöffnung 11 der jeweiligen Mulde 12 sind auf den beiden imaginären Diagonalen der quadratischen Kontur 14 angeordnet, wobei sich die Vakuumöffnung 11 im Schnittpunkt der beiden Diagonalen befindet.In each
In den
In
In
Dadurch, dass die Druckbogen 3 mit der Vorderkante und der Hinterkante oder zumindest mit den kantennahen Randbereichen auf den Vorsprüngen 18 aufliegen und von diesem abgestützt werden, werden die Bogenkanten und auch die Bogenecken sicher am Förderband 4 festgehalten und besteht keine Gefahr eines Aufrichtens oder Umschlagens der Kanten und Ecken. Aufgerichtete oder umgeschlagene Kanten und Ecken würden sonst eine Gefahr für den Tintenstrahl-Druckkopf darstellen, mit dessen Düsenplatte sie beim Vorbeilauf daran kollidieren könnten, wodurch die Düsenplatte beschädigt werden könnte. Das erfindungsgemäße Förderband 4 ist deshalb besonders vorteilhaft in Druckmaschinen 1 mit einem Tintenstrahl-Druckkopf einsetzbar, der bei dem erfindungsgemäßen Förderband 4 besonders nah an das Trum 5 heranreichen kann, was wiederum bezüglich der Druckqualität vorteilhaft ist.Because the printed
Bei einer zeichnerisch nicht dargestellten und nicht beanspruchten Modifikation sind pro Mulde 12 zwei Vakuumöffnungen 11 vorhanden, die in den Boden der Mulde 12 eingebracht sind. Das heißt, zu der in der Zeichnung dargestellten Vakuumöffnung 11 kommt eine zusätzliche Vakuumöffnung 11 hinzu.In a modification, not shown in the drawing and not claimed, two
Die beiden pro Mulde 12 vorgesehenen Vakuumöffnungen 11 haben einen Mittenversatz zueinander, der in Querrichtung des Förderbands 4, also senkrecht zur Richtung 7 (Umlaufrichtung), zu messen ist. Die Mitten der beiden Vakuumöffnungen 11 können zusätzlich auch in Richtung 7 des Umlaufs des Förderbandes 4 zueinander versetzt sein, das müssen sie aber nicht unbedingt.The two
- 11
- DruckmaschinePrinting press
- 22nd
- TransporteinrichtungTransport device
- 33rd
- DruckbogenPrinted sheet
- 44th
- FörderbandConveyor belt
- 55
- TrumRun
- 66
- Rollerole
- 77
- Richtungdirection
- 88th
- LeitblechBaffle
- 99
- SaugluftkastenSuction air box
- 1010th
- VakuumquelleVacuum source
- 1111
- VakuumöffnungVacuum opening
- 1212th
- Muldetrough
- 1313
- Stegweb
- 1414
- Konturcontour
- 1515
- InneneckeInside corner
- 1616
- ÄtzstrukturEtching structure
- 1717th
- TransportebeneTransport level
- 1818th
- Vorsprunghead Start
Claims (5)
- Conveyor belt for print sheets comprising depressions (12) and webs (13) formed therebetween, the depressions (12) and webs (13) jointly forming a grid, characterized in that protrusions (18) for supporting the print sheets (3) and a vacuum opening (11) are disposed in every depression (12), wherein the vacuum openings (11) are disposed between the protrusions (18), the protrusions are disposed in an even distribution about the vacuum opening (11), the conveyor belt (4) is a steel belt, and the depressions (12) and protrusions (18) are formed by an etching structure (16).
- Conveyor belt according to claim 1,
wherein the protrusions (18) and the webs (13) terminate in such a way that they are flush with one another. - Conveyor belt according to claim 1 or 2,
wherein every depression (12) has an edge forming a polygonal contour (14). - Conveyor belt according to claim 3,
wherein the polygonal contour (14) is quadrangular. - Conveyor belt according to claim 3 or 4,
wherein the polygonal contour (14) has rounded inner corners (15).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016208074.1A DE102016208074A1 (en) | 2016-05-11 | 2016-05-11 | Conveyor belt for printed sheets |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3243779A1 EP3243779A1 (en) | 2017-11-15 |
EP3243779B1 true EP3243779B1 (en) | 2020-07-15 |
Family
ID=58536816
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17165699.4A Active EP3243779B1 (en) | 2016-05-11 | 2017-04-10 | Conveyor belt for printed sheets |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3243779B1 (en) |
CN (1) | CN107379790B (en) |
DE (1) | DE102016208074A1 (en) |
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EP4121300A4 (en) * | 2019-07-19 | 2024-05-29 | Sam Security Printing Matbaa Anonim Sirketi | A printing system of security materials and anti-forgery documents with raised printing and process thereof |
DE102020125412A1 (en) | 2020-09-29 | 2022-03-31 | Koenig & Bauer Ag | Device for transporting sheet metal panels coated up to their front edge and/or rear edge related to their transport direction |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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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 |
JPS55176246U (en) * | 1979-06-07 | 1980-12-17 | ||
US4878071A (en) * | 1988-03-11 | 1989-10-31 | Rastergraphics, Inc. | Paper transport and paper stabilizing system for a multicolor electrostatic plotter |
DE4406739C2 (en) * | 1994-03-02 | 1997-06-19 | Heidelberger Druckmasch Ag | Device for uniform suction of a flat body on a base, in particular for printing presses and their accessories |
US5706994A (en) * | 1995-06-26 | 1998-01-13 | Marquip, Inc. | Vacuum assisted web drive for corrugator double backer |
DE29515857U1 (en) * | 1995-10-06 | 1995-12-07 | RRG Industrietechnik GmbH, 45470 Mülheim | Conveyor |
DE19839314B4 (en) * | 1998-02-18 | 2007-03-01 | Heidelberger Druckmaschinen Ag | Method and device for transporting sheets by means of at least one conveyor belt to which the sheets are fixed on the transport path |
AU1935300A (en) * | 1998-12-08 | 2000-06-26 | Langston Corporation, The | Vacuum assist transfer belt |
DE10010970A1 (en) * | 1999-03-26 | 2000-10-12 | Heidelberger Druckmasch Ag | Suction belt conveyor for printing machine has a belt whose surface has slits forming grid structure into which bores which cross the belt open |
KR100788660B1 (en) * | 2005-01-18 | 2007-12-26 | 삼성전자주식회사 | Image scanning/printing apparatus and image scanning/printing method thereof |
JP2008080526A (en) * | 2006-09-26 | 2008-04-10 | Brother Ind Ltd | Liquid jet apparatus |
DE102009048928A1 (en) | 2009-10-10 | 2011-04-14 | Steinemann Technology Ag | Inkjet printer for printing on sheet-shaped substrate, has printing unit transport device including conveyor belt with drive device that impresses speed to belt, where printing sheet or substrate is provided with certain distance to belt |
JP5543564B2 (en) * | 2011-12-27 | 2014-07-09 | 富士フイルム株式会社 | Inkjet recording device |
-
2016
- 2016-05-11 DE DE102016208074.1A patent/DE102016208074A1/en not_active Withdrawn
-
2017
- 2017-04-10 EP EP17165699.4A patent/EP3243779B1/en active Active
- 2017-05-04 CN CN201710307808.8A patent/CN107379790B/en active Active
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
CN107379790A (en) | 2017-11-24 |
EP3243779A1 (en) | 2017-11-15 |
DE102016208074A1 (en) | 2017-11-16 |
CN107379790B (en) | 2020-06-19 |
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