EP0559846A1 - Dispositif pour le retournement d'une feuille avec changement simultane du sens de transport. - Google Patents

Dispositif pour le retournement d'une feuille avec changement simultane du sens de transport.

Info

Publication number
EP0559846A1
EP0559846A1 EP92908174A EP92908174A EP0559846A1 EP 0559846 A1 EP0559846 A1 EP 0559846A1 EP 92908174 A EP92908174 A EP 92908174A EP 92908174 A EP92908174 A EP 92908174A EP 0559846 A1 EP0559846 A1 EP 0559846A1
Authority
EP
European Patent Office
Prior art keywords
gap
sheet
guide plate
diagonal
input
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
EP92908174A
Other languages
German (de)
English (en)
Other versions
EP0559846B1 (fr
EP0559846B2 (fr
Inventor
Johannes Jacobus Maria Kusters
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.)
Pitney Bowes Deutschland GmbH
Original Assignee
Bell and Howell GmbH
Bell and Howell Co
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6435463&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0559846(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Bell and Howell GmbH, Bell and Howell Co filed Critical Bell and Howell GmbH
Publication of EP0559846A1 publication Critical patent/EP0559846A1/fr
Publication of EP0559846B1 publication Critical patent/EP0559846B1/fr
Application granted granted Critical
Publication of EP0559846B2 publication Critical patent/EP0559846B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B65H5/02—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains
    • B65H5/021—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts
    • B65H5/025—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts between belts and rotary means, e.g. rollers, drums, cylinders or balls, forming a transport nip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H15/00—Overturning articles
    • B65H15/004—Overturning articles employing rollers
    • 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
    • B65H5/26—Duplicate, alternate, selective, or coacting feeds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/34—Modifying, selecting, changing direction of displacement
    • B65H2301/342—Modifying, selecting, changing direction of displacement with change of plane of displacement
    • B65H2301/3423—Modifying, selecting, changing direction of displacement with change of plane of displacement by travelling an angled curved path section for overturning and changing feeding direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/445—Moving, forwarding, guiding material stream of articles separated from each other
    • B65H2301/4454—Merging two or more streams

Definitions

  • the invention relates to a device for turning a sheet while changing the conveying direction.
  • Devices of this type are required if sheets or forms are fed from a processing station, for example a printer or a copier, onto a conveyor chain in order to be guided by this past further handling or processing stations or with further sheets and forms to be compiled into a set of sheets or a set of forms.
  • the object of the invention is accordingly to design a device for turning a sheet while changing the conveying direction so that a continuous Flow of the sheets to be handled is ensured at high working speed and operational disruptions are avoided.
  • the sheet is conveyed by means of a drive roller arrangement into an entry gap delimited by guide walls, which meets a diagonally running bending gap, the axis of curvature of which is oriented essentially parallel to the sheet plane and at an angle of preferably 45 degrees to the leading sheet edge and which opens into an exit gap, in which exit drive means are provided at least for detecting the sheet corner which first arrives in the exit gap when the sheet is fed through the entry gap, the exit gap having a substantially parallel, but spaced-apart plane to that of the entrance gap.
  • a multiple juxtaposition of devices of the type just described makes it possible not only to turn a single sheet and remove it with a changed conveying direction, but also to separate a plurality of sheets or form sections conveyed next to one another simultaneously with the turning process and the change in the conveying direction to assign the individual sheets or form sections to separate sheet stacks or form sets after this separation.
  • the input gap is formed between a cover plate and a guide plate, of which the cover plate fits into a diagonal recess in the guide plate with formation of the bending gap Has extending diagonal curved deflection flange, and of which the guide plate has a diagonal, substantially cylindrical deflection body opposite the deflection flange and finally the exit gap and the output drive means are provided on the side of the guide plate facing away from the cover plate.
  • the output gap expediently contains, on the one hand, sections of rotating conveyor belts which are moved in the discharge direction and, on the other hand, associated counter-roller bodies as the output drive means, the roller bodies preferably being formed by balls held in cages of the guide plate.
  • FIG. 1 is a schematic perspective view of a device for turning a sheet while simultaneously changing the conveying direction, certain supporting frame parts being omitted to simplify the illustration and to improve clarity.
  • 2 shows a sectional view of the device according to FIG. 1 corresponding to the sectional plane II-II indicated in FIG. 1,
  • Fig. 3 is a perspective schematic representation of the path of several sheets to be isolated in devices of the type specified here and
  • 3a to 3d are schematic plan views of handling sheets or forms conveyed and turned in devices of the type specified here, which are placed on a conveyor chain, for example, in a post-processing machine.
  • a feed device 11 is connected upstream of the device 10 specified here for turning a sheet while simultaneously changing the conveying direction, in which a feed gap 12 is formed between pairs of opposing guide rods 13 and 14.
  • the guide rods 13 can be held together by transverse connecting rods 15, while the guide rods 14 are held together in a corresponding manner by transverse connecting rods 16.
  • a sheet to be processed by the device for turning and changing the conveying direction is inserted into the feed gap 12 in the direction of arrow 17 and has the shape of a sheet separated from an endless form, for example by means of a cutting device.
  • Devices upstream of the feed device 11 convey a sheet to be handled into the entry gap 12 until the front sheet edge over protrudes the feed gap 12 and enters an input gap 18 of the device for turning and changing the conveying direction.
  • a drive roller arrangement 21 and 22 extends over sections of guide walls 19 and 20 in the input gap 18, which captures the front edge of the sheet fed via the feed gap 12 and pulls it further into the input gap 18.
  • a vacuum holding device 23 blocks the further sheet movement, the lower drive rollers, which are not provided with a friction lining and driven by a motor 24 22 pass through the drive roller arrangement under the sheet to be conveyed without the holding force of the vacuum holding device 23 being overcome.
  • the vacuum holding device 23 is realized by channels 25 opening into vacuum holding openings of the guide rods 14, a control valve 26 and a vacuum source 27.
  • the respective sheet position in which the vacuum holding device 23 is switched on or switched ineffective can be determined by means of a position indicator 28 in the form of a photocell and a control device 29.
  • the guide walls 19 and 20 converge in the manner shown in FIG. 2 from the input side towards the input gap 18, the upper guide wall 19 being fastened to a swivel bracket 30 which is swiveled up about a swivel axis 31 which is mounted in bearing blocks 32 can, around the upper guide wall 19 together with the rollers 21 of the drive roller arrangement, which are also mounted and held on the swivel bracket 30, from the lower guide wall 20 and the lower arrangement of drive rollers 22 and to make the entrance gap 18 accessible. It should also be noted here that the rollers 21 of the drive roller arrangement are freely supported.
  • the upper guide wall 19 and the lower guide wall 20 extend in the conveying direction of the drive roller arrangement up to a diagonally running bending gap 33, the axis of curvature of which is essentially parallel to the plane of the entrance gap and thus to the plane of the sheet to be handled Leaf and is oriented at an angle of 45 degrees to the leading sheet edge, the bending gap 33 is limited on the one hand by a diagonal, curved deflection flange 34 of the upper guide wall and on the other hand by a diagonal, essentially cylindrical deflection body opposite this deflection flange.
  • the upper guide wall 19 designed as a comparatively rigid cover plate thus extends into a diagonal recess of the lower guide wall 20 oriented at 45 degrees to the direction of conveyance of the drive roller arrangement, the diagonal front edge of the lower guide wall 20 being closed off by the deflecting body 35.
  • the lower guide wall 20 forms the upper end of a guide plate 36, the middle layer 37 of which consists for example of polytetrafluoroethylene and is provided with cage recesses 38 in which rolling elements or balls 39 are accommodated.
  • the upper sections or the upper debris of the conveyor belts 42 and 43 and, on the other hand, rows of rolling elements 39 each aligned with the conveyor belts act as conveying devices. This assignment is readily apparent to those skilled in the art from FIGS. 1 and 2.
  • rollers of the pair of rollers 50 which is not shown in FIG be arranged, which is dimensioned in such a way that it protrudes somewhat into the profile of the exit gap 49 and therefore gives the removed sheet a slight transverse curvature, which increases the stability of the requested sheet in a desirable manner.
  • a sheet that has been severed approximately from an endless form is removed from the separating device in the direction of arrow 17 in the feed device 11 is entered and advanced so far that the leading edge of the sheet is finally gripped by the drive roller arrangement in the input gap 18 and is advanced further in the input gap 18.
  • the rear edge of the sheet overflows the sensor 28, which generates a signal and causes the control device 29 to put the vacuum holding device 23 into operation by opening the valve 26, so that the sheet now passes through the vacuum suction openings at the outer end of the channels 25 is held and the drive rollers 22 run empty under the part of the sheet to be handled located in the entrance gap 18.
  • the drive roller arrangement 21, 22 pushes the sheet to be handled further in the entry gap, so that the sheet corner lying on the left in FIG. 1 initially bends the bending gap 33 is reached and is bent downwards at 45 degrees until this sheet corner has reached the exit gap 49 and is gripped by the ball designated 39A in FIG. 1 on the one hand and the conveyor belt 42 on the other hand.
  • the conveying speed of the conveyor belts 42 and 43 in connection with the roller bodies 39 is preferably greater than the conveying speed of the drive roller arrangement 21, 22, with the result that the sheet to be handled as soon as its corner between conveyor belt 2, which is on the right with reference to FIG and the rolling element or the ball 39A is grasped, is now pulled at an increased speed from the input gap 18 into the output gap 49 and changes from the initially prevailing nestling to the inside of the deflection flange 34 for bearing against the outer surface of the deflection body 35 and precisely follows its diagonal bend in such a way that Due to the 45 degree orientation of the deflecting body 35, a conveying direction in the exit gap 49 sets 90 degrees to the feed direction in accordance with the arrow 17, as indicated by the arrow 51 in FIG. 1.
  • both the feed device 11 and the device 10 have a plurality of adjacent sections, the swivel bracket 30 and the swivel axis extending in one piece over these multiple sections and each with sets of drive rollers 21 corresponding to that in FIG. 1 ge arrangement shown is provided.
  • cover plate sections 19 assigned to the sections are fastened with deflection flanges 34, the deflection flanges 34 each extending into diagonal recesses, provided with deflection bodies 35, in a guide plate 36 of greater length extending transversely over all sections.
  • On the underside of this guide plate there is a table 41 correspondingly extending over all sections of the device, over the top of which in turn correspondingly elongated conveyor belts 42 and 43 are guided.
  • the object can be achieved of turning and separating a plurality of sheets, which are requested next to one another in one plane and separated from one another in the longitudinal direction, as well as being requested in a direction perpendicular to the feed direction, as is shown schematically in FIG. 3 and in a perspective view.
  • the handled sheets follow one another in this new conveying direction, the sheet 52d lying on the right with reference to the illustration of FIG. 3 then from the conveying direction is transported at the top, while the sheet 52a drawn on the left in FIG. 3 is removed at the bottom.
  • the separation afterwards presents no difficulties.
  • FIG. 3a shows schematically a device with two sections
  • FIG. 3b one with three sections
  • FIG. 3c one with four sections of adjacent units 10 of the type shown in FIG. 1.
  • FIG. 3d shows that feed devices 11 from both sides forth a chain of adjacent units 10 can supply each with alternating orientation of the diagonal deflection gap 33.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Registering Or Overturning Sheets (AREA)

Abstract

Des feuilles ou jeux de feuilles sont retournés à une vitesse de travail élevée et avec une grande sécurité de fonctionnement, en particulier après la coupe d'imprimés en continu, acheminés plus avant avec un changement du sens de transport, et séparés en amenant le bord de feuille orienté dans le sens du transport à une fente de pliage en diagonale par laquelle tout d'abord un coin de feuille atteint une fente de sortie, dans laquelle le bord guidant de la feuille est amené à une vitesse élevée, dans une direction perpendiculaire au dispositif de transport, dans un plan parallèle au plan du transport, tout en étant à une certaine distance de ce plan.
EP92908174A 1991-07-04 1992-04-13 Dispositif pour le retournement d'une feuille avec changement simultane du sens de transport Expired - Lifetime EP0559846B2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4122214A DE4122214A1 (de) 1991-07-04 1991-07-04 Einrichtung zum wenden eines blattes unter gleichzeitiger aenderung der foerderrichtung
DE4122214 1991-07-04
PCT/EP1992/000829 WO1993001115A1 (fr) 1991-07-04 1992-04-13 Dispositif pour le retournement d'une feuille avec changement simultane du sens de transport

Publications (3)

Publication Number Publication Date
EP0559846A1 true EP0559846A1 (fr) 1993-09-15
EP0559846B1 EP0559846B1 (fr) 1996-07-17
EP0559846B2 EP0559846B2 (fr) 2001-03-21

Family

ID=6435463

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92908174A Expired - Lifetime EP0559846B2 (fr) 1991-07-04 1992-04-13 Dispositif pour le retournement d'une feuille avec changement simultane du sens de transport

Country Status (4)

Country Link
US (2) US5362039A (fr)
EP (1) EP0559846B2 (fr)
DE (2) DE4122214A1 (fr)
WO (1) WO1993001115A1 (fr)

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* Cited by examiner, † Cited by third party
Title
See references of WO9301115A1 *

Also Published As

Publication number Publication date
US5362039A (en) 1994-11-08
USRE38867E1 (en) 2005-11-08
DE4122214A1 (de) 1993-01-14
EP0559846B1 (fr) 1996-07-17
DE59206783D1 (de) 1996-08-22
EP0559846B2 (fr) 2001-03-21
WO1993001115A1 (fr) 1993-01-21

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