EP0714770B1 - Dispositif pour transporter du papier - Google Patents

Dispositif pour transporter du papier Download PDF

Info

Publication number
EP0714770B1
EP0714770B1 EP95117206A EP95117206A EP0714770B1 EP 0714770 B1 EP0714770 B1 EP 0714770B1 EP 95117206 A EP95117206 A EP 95117206A EP 95117206 A EP95117206 A EP 95117206A EP 0714770 B1 EP0714770 B1 EP 0714770B1
Authority
EP
European Patent Office
Prior art keywords
belt
drum
regions
transport device
paper transport
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 - Lifetime
Application number
EP95117206A
Other languages
German (de)
English (en)
Other versions
EP0714770A1 (fr
Inventor
Martin Greive
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 EP0714770A1 publication Critical patent/EP0714770A1/fr
Application granted granted Critical
Publication of EP0714770B1 publication Critical patent/EP0714770B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines

Definitions

  • the invention relates to a paper transport device for Printing presses, with a drive roller, one at a distance for this arranged deflection drum and one around Drive roller and the deflection drum running around Conveyor belt that covers both areas with engaging elements also has substantially smooth areas.
  • the invention is therefore based on the object To create paper transport device for printing presses, where the paper transport is extremely synchronized with the Machine drive takes place.
  • the invention is based on the knowledge that Synchronization errors not only due to slippage of the machine belt, but also result from tolerances, for example at the manufacture or wear of the engaging elements arise and, since inevitable, an absolute Make it impossible to synchronize these bands.
  • Through the partial decoupling of the different Conveyor belt areas in the invention act Engagement areas and the smooth surface areas advantageous together, so that on the straight running smooth surface Areas of transported paper with the greatest accuracy can be fed.
  • the mobility between the areas with Engagement elements and the substantially smooth surface Areas of the conveyor belt can be covered by any elastic means are generated in between, for example a material with a lower modulus of elasticity or one thinner material than in the other areas of the Conveyor belt.
  • the desired elasticity can be particularly generate in a simple manner that the conveyor belt between the areas with engagement elements and the in essential smooth areas with a variety of Recesses is provided in the longitudinal direction of the Conveyor belt are arranged distributed.
  • the This also makes elastic properties very precise reproducible and can be very along the conveyor belt keep constant.
  • the respective drum can adjust the belt tension and the belt can center and run in a stable path.
  • the freely rotatable Drum of the deflection drum on a concave outer surface.
  • the outer surface of the drive roller form concave, or there may be convex lateral surfaces be used.
  • this is Conveyor belt preferably made of conventional components composed, namely a flat machine belt and two timing belt attached to the side, the machine belt the substantially smooth areas of the Conveyor belt forms and the toothed belt the areas of the Form conveyor belt with engaging elements.
  • the machine belt the substantially smooth areas of the Conveyor belt forms and the toothed belt the areas of the Form conveyor belt with engaging elements.
  • Fig. 1 contains a drive roller 1, which in Fig. 2 still once enlarged, one on the machine side mounted and driven drive shaft 2.
  • Toothed pulleys 3 On the Drive shaft 2 are two at an axial distance Toothed pulleys 3, each with an outer one, for toothed belts suitable toothing attached.
  • Toothed pulleys 3 Between the two A cylindrical drum 4 extends with toothed disks 3 pretty much the same diameter as that Toothed pulleys 3.
  • the drum 4 is by means of two separate Bearing 5 rotatably mounted on the drive shaft 2 so that it is rotatable against the toothed disks 3.
  • On the deflection shaft 7 are at the same axial distance like the toothed discs 3 of the drive shaft 2 two Toothed washers 8 with a larger diameter than the toothed washers 3 rotatably mounted.
  • a drum 9 extends at its axial ends pretty much the same diameter as the pulleys 8 and a slightly smaller diameter towards the center has, so that a lateral surface 10 of the drum 9 a has a slightly concave cross section.
  • the drum 9 is by means of two separate bearings 11 rotatable on two to the Toothed washers 8 cast hollow pin 12 stored in each case from the toothed disks 8 without the deflection shaft 7 touch, protrude inwards.
  • the conveyor belt 13 is in one in the direction of its width middle, by a smooth machine belt 14 formed area and two by a toothed belt 15th formed edge areas divided.
  • the machine belt 14 lies on the drive roller 1 and the deflection drum 6 on their separately rotatable drums 4 and 9, while the Toothed belt 15 on the drive roller 1 and the deflection drum 6 rest on their tooth lock washers 3 or 8.
  • the recesses 16 have the Form of slots that are transverse to the longitudinal direction of the Conveyor belt 13 or machine belt 14 run, but are much shorter than the machine belt 14 wide is, so that the width of the paper transport available Machine belt 14 is not significantly restricted.
  • the deflection shaft 7 of the deflection drum 6 is in at its ends a U-shaped bracket 17 which holds the deflection drum 6 embraces.
  • the bracket 17 is in one at its base Pivotal point 18 is mounted so that it is in the plane of FIG. 1 or 3 is pivotable about the pivot point 18.
  • Pivotal point 18 lies in a plane that is perpendicular through a imaginary center line of the conveyor belt 13 in its Longitudinal direction.
  • the fulcrum 18 is also in stationary with respect to the machine, as in FIGS. 1 and 3 indicated, so that the conveyor belt 13 is kept taut becomes.
  • the machine belt 14 has a reduced thickness at its edge 19, and Toothed belt 15 has an extension 20 which over the Edge 19 placed and for example by gluing it is attached.
  • the reduction in thickness at the edge 19 of the Machine belt 14 and the location of the extension 20 of the Timing belts 15 are selected so that in the longitudinal direction running tensile strands 21 in the toothed belt 15 as exactly as possible at the level of the neutral fiber of the Machine belt 14 lie.
  • the conveyor belt 13 can also be made in one piece be.
  • the transport device described above has the Effect that the conveyor belt 13 on the straight line between the drive roller 1 and the deflection drum 6 runs practically absolutely synchronized with the drive roller 1, so that paper with an accuracy of a few ⁇ m can be transported.
  • a slip of the machine belt 14 for Drive roller 1 affects the currently running piece of tape not from. Relative movements between the timing belts 15 and the machine belt 14, which inevitably due to tolerances are created by the rotatably mounted drums 4, 9 as well as the relatively elastic connection of the Timing belt 15 balanced with the machine belt 14.
  • the pivotable mounting of the guide drum 6 can Center the conveyor belt 13 and in a stable path to run. The same effect occurs when the fulcrum 18 not, as shown in FIG. 1, outside the deflection drum 6 and the drive roller 1, but in between.

Landscapes

  • Delivering By Means Of Belts And Rollers (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Claims (8)

  1. Dispositif de transport de papier pour machines à imprimer, comprenant un rouleau d'entraínement, un tambour de renvoi placé à distance de celui-ci et un ruban transporteur qui passe autour du rouleau d'entraínement et du tambour de renvoi et qui présente aussi bien des zones comprenant des éléments d'engrènement que des zones sensiblement planes et unies,
       caractérisé
       en ce que le rouleau d'entraínement (1) et le tambour de renvoi (6) sont tous deux subdivisés en parties de tambour (3, 4 ; 8, 9) qui sont séparées axialement, qui sont rotatives indépendamment les unes des autres et autour desquelles passent d'une part les zones comprenant des éléments d'engrènement (15) et d'autre part les zones sensiblement planes et unies du ruban transporteur (13)
       et en ce que le ruban transporteur (13) est réalisé entre les zones comportant des éléments d'engrènement (15) et les zones sensiblement planes et unies (14) de manière que des petits mouvements relatifs soient possibles dans la direction de la longueur entre ces zones.
  2. Dispositif de transport de papier selon la revendication 1,
       caractérisé
       en ce que le ruban transporteur (13) comporte entre les zones comprenant des éléments d'engrènement (15) et les zones sensiblement planes et unies (14) plusieurs évidements (16) qui sont répartis dans la direction de la longueur du ruban transporteur.
  3. Dispositif de transport de papier selon la revendication 2,
       caractérisé
       en ce que les évidements (16) sont des fentes orientées perpendiculairement à la direction de la longueur du ruban transporteur (13).
  4. Dispositif de transport de papier selon l'une des revendications précédentes,
       caractérisé
       en ce que le rouleau d'entraínement (1) et le tambour de renvoi (6) comprennent chacun deux disques dentés latéraux (3, 8) qui sont fixés dans chaque cas sur un arbre (2, 7), ainsi qu'un tambour (4, 9) monté librement rotatif entre les disques dentés, les disques dentés et le tambour correspondant ayant sensiblement le même diamètre.
  5. Dispositif de transport de papier selon la revendication 4,
       caractérisé
       en ce que le tambour du tambour de renvoi (6), qui est monté librement rotatif (9), présente une surface d'enveloppe concave ou convexe (10) et/ou le tambour du rouleau d'entraínement (1) qui est monté librement rotatif (4) présente une surface d'enveloppe concave ou convexe.
  6. Dispositif de transport de papier selon l'une des revendications précédentes,
       caractérisé
       en ce que le tambour de renvoi (6) et/ou le rouleau d'entraínement (1) est monté oscillant autour d'un centre de rotation (18) qui est situé dans un plan qui passe par une ligne de symétrie du ruban transporteur (13) qui est orientée dans la direction de la longueur.
  7. Dispositif de transport de papier selon l'une des revendications précédentes,
       caractérisé
       en ce que le ruban transporteur (13) se compose d'un ruban machine plan (14) et de deux courroies crantées (15) qui sont rapportés latéralement à celui-ci, le ruban machine formant les zones sensiblement planes et unies du ruban transporteur et les courroies crantées formant les zones du ruban transporteur qui comportent des éléments d'engrènement.
  8. Dispositif de transport de papier selon la revendication 7,
       caractérisé
       en ce que le ruban machine (14) et les courroies crantées (15) sont assemblés de manière que des cordes de traction (21) de la courroie crantée soient situées au même niveau que la fibre neutre du ruban machine.
EP95117206A 1994-12-02 1995-11-02 Dispositif pour transporter du papier Expired - Lifetime EP0714770B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4442982 1994-12-02
DE4442982A DE4442982C2 (de) 1994-12-02 1994-12-02 Papiertransportvorrichtung

Publications (2)

Publication Number Publication Date
EP0714770A1 EP0714770A1 (fr) 1996-06-05
EP0714770B1 true EP0714770B1 (fr) 1998-06-17

Family

ID=6534771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95117206A Expired - Lifetime EP0714770B1 (fr) 1994-12-02 1995-11-02 Dispositif pour transporter du papier

Country Status (5)

Country Link
US (1) US5765679A (fr)
EP (1) EP0714770B1 (fr)
JP (1) JPH08225177A (fr)
DE (2) DE4442982C2 (fr)
ES (1) ES2119288T3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0982261A3 (fr) * 1998-08-18 2002-02-13 Masao Kubota Système de transport continu à haute vitesse
DE19854327C2 (de) * 1998-11-25 2000-11-16 Klaus Edelmann Gurtförderer für eine Gurtkurve
US6279752B1 (en) * 2000-04-14 2001-08-28 Polychem Corporation Wide rectangular clarifiers
JP5282333B2 (ja) * 2008-01-07 2013-09-04 株式会社Ｉｓｏｗａ 被搬送物の搬送装置
DE102014002360A1 (de) * 2014-02-18 2015-08-20 Beumer Gmbh & Co. Kg Transportvorrichtung mit einem endlosen bandförmigen Transportelement

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1843208A (en) * 1929-09-03 1932-02-02 Fmc Corp Belt conveyer
US2129337A (en) * 1937-10-22 1938-09-06 Spears Joseph Mackay Conveyer
FR1186633A (fr) * 1957-11-21 1959-08-28 Perfectionnements aux machines pour l'impression sur table en continu
US3917092A (en) * 1971-08-16 1975-11-04 Goodrich Co B F Conveyor belt with sprocket drive
SE7709553L (sv) * 1976-09-28 1978-03-29 Ammeraal Nederland Bv Bandtransportor
GB1561965A (en) * 1976-10-25 1980-03-05 Post Office Apparatus for conveying flat items
CH614908A5 (fr) * 1977-11-22 1979-12-28 Buehrer Transver Ag
US4289230A (en) * 1978-01-19 1981-09-15 Mcgee Terence Troughed belt conveyors
US4421228A (en) * 1981-08-17 1983-12-20 Eastman Kodak Company Periodically aligning an endless web
DE3900341A1 (de) * 1989-01-07 1990-07-12 Fredenhagen Kg Verfahren und vorrichtung zum transport von guetern
FR2677339B1 (fr) * 1991-06-10 1995-08-25 Fcb Perfectionnements aux transporteurs a bandes sans fin.
JPH0624598A (ja) * 1992-02-25 1994-02-01 Nec Niigata Ltd 電子写真方式画像形成装置の搬送ローラ
TW219419B (en) * 1992-05-21 1994-01-21 Ibm Mobile data terminal with external antenna
JPH05338843A (ja) * 1992-06-05 1993-12-21 Canon Inc 定着装置

Also Published As

Publication number Publication date
DE4442982C2 (de) 1997-12-04
DE59502588D1 (de) 1998-07-23
DE4442982A1 (de) 1996-06-05
US5765679A (en) 1998-06-16
ES2119288T3 (es) 1998-10-01
EP0714770A1 (fr) 1996-06-05
JPH08225177A (ja) 1996-09-03

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