EP2149524B1 - Dispositif d'alimentation de feuilles sous vide - Google Patents

Dispositif d'alimentation de feuilles sous vide Download PDF

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Publication number
EP2149524B1
EP2149524B1 EP09166050.6A EP09166050A EP2149524B1 EP 2149524 B1 EP2149524 B1 EP 2149524B1 EP 09166050 A EP09166050 A EP 09166050A EP 2149524 B1 EP2149524 B1 EP 2149524B1
Authority
EP
European Patent Office
Prior art keywords
feeding mechanism
document
mechanism according
vacuum
vacuum feeding
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.)
Not-in-force
Application number
EP09166050.6A
Other languages
German (de)
English (en)
Other versions
EP2149524A3 (fr
EP2149524A2 (fr
Inventor
Christopher Hugh Williams
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.)
Quadient Technologies France SA
Original Assignee
Neopost Technologies SA
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 Neopost Technologies SA filed Critical Neopost Technologies SA
Publication of EP2149524A2 publication Critical patent/EP2149524A2/fr
Publication of EP2149524A3 publication Critical patent/EP2149524A3/fr
Application granted granted Critical
Publication of EP2149524B1 publication Critical patent/EP2149524B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65H3/00—Separating articles from piles
    • B65H3/08—Separating articles from piles using pneumatic force
    • B65H3/10—Suction 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
    • B65H3/00—Separating articles from piles
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators
    • B65H3/0692—Vacuum assisted separator 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
    • B65H3/00—Separating articles from piles
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/56—Elements, e.g. scrapers, fingers, needles, brushes, acting on separated article or on edge of the pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/13—Thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B65H2511/22—Distance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B65H2511/23—Coordinates, e.g. three dimensional coordinates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/10—Mass, e.g. mass flow rate; Weight; Inertia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30—Forces; Stresses
    • B65H2515/34—Pressure, e.g. fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30—Forces; Stresses
    • B65H2515/37—Elasticity modulus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/171—Physical features of handled article or web

Definitions

  • the present invention relates to a vacuum sheet feeder for a paper handling machine, and particularly to a singulating mechanism for feeding sheets seriatim.
  • Sheet feeding mechanisms are required to feed sheets from a stack of identical sheets, which may, for example, be stored in a hopper, one at a time to a processing device.
  • the sheets may, for example, be documents such as recently printed letters, preprinted inserts, or envelopes, and a feeding mechanism may be used for different types of documents at different processing times or for different batch runs.
  • Vacuum feeding mechanisms are well known and use suction to transport documents / envelopes from a stack of such documents to a downstream device. Vacuum feeding is particularly favoured for documents which are printed by methods which do not fully fix the toner to the paper (e.g., "cold fusion" techniques used in high speed printers) because the toner can easily smear when fed by conventional friction feeders.
  • a vacuum is applied to the top sheet of a stack through a vacuum wheel or drum to lightly pull the top sheet toward the wheel and move it downstream as the wheel rotates.
  • a partial vacuum is usually used to avoid causing damage or distortion to the document and to ensure that only the top sheet is held by the wheel. In this way the wheel lifts the top sheet over a stop known as a "pick" which prevents the rest of the stack moving.
  • US 5,273,269 also describes a friction feeding mechanism and uses a plurality of separating surfaces having different coefficients of friction for separating sheets of varying characteristics.
  • the separating surface can be changed automatically depending upon feedback from a detector downstream.
  • a vacuum assembly for a sheet feeder is shown in US 6,189,883 comprising a continuously rotating feed drum having inner and outer circumferences, suction openings and a vacuum assembly inside the drum.
  • Document JP 11 199072 A discloses a vacuum feeding mechanism according to the preamble of claim 1 and according to the preamble of claim 7.
  • a vacuum feeding mechanism for a document handling apparatus, the feeding mechanism comprising: an adjustable pick for separating a stack of documents from a downstream transport system; a rotatable wheel connected to a vacuum port and operable to pull a document by suction from the top of the stack toward the wheel and move the document over the pick to the downstream transport system; the wheel and the pick being separated by a clearance distance; means for determining adjustment coordinates in dependence upon characteristics of a document in the stack; wherein the position of the pick is automatically adjustable in two independent dimensions in dependence upon said adjustment coordinates.
  • the adjustment coordinates are determined also in dependence upon the position of the pick relative to the vacuum wheel and the desired clearance distance.
  • the desired clearance distance is preferably calculated as a function of at least the thickness of the document, and advantageously also the flexure characteristics of the document.
  • the feeding mechanism further comprises means to automatically adjust the suction applied by the wheel to the top document of the stack.
  • a vacuum feeding mechanism for a document handling apparatus, the feeding mechanism comprising: an adjustable pick for separating a stack of documents from a downstream transport system; a rotatable wheel connected to a vacuum port and operable to pull a document by suction from the top of the stack toward the wheel and move the document over the pick to the downstream transport system; the wheel and the pick being separated by a clearance distance; means for determining adjustment coordinates in dependence upon characteristics of a document in the stack; wherein the suction applied by the wheel to the top document of the stack is automatically adjustable in dependence upon said adjustment coordinates.
  • the suction adjustment may comprise adjustment of the strength of the suction and / or the spread of suction application across the width of the document, for example the number of suction orifices or the size of the orifices.
  • Such adjustment means may include a feedback loop.
  • the feedback may include data corresponding to any one or combination of factors such as:
  • Such factors may be detected by sensors downstream of the feeding mechanism.
  • the initial settings for the pick position and/or the vacuum port are automatically calculated from parameters of the documents which may be stored with other job settings for a particular feed run.
  • parameters will typically include details of the nature of the documents so as to identify, for example, weight, thickness and flexibility. These details will usually be known for particular documents - for example for particular grades of paper or particular manufacturer's envelopes - and can be preset as standard settings for an operator to choose. Alternatively the parameters can be measured prior to operation of a feed run.
  • the position of the pick and/or the settings for the vacuum port are stored for each job and can be used each time the same job is to be re-run.
  • Figures 1 and 2 illustrate a conventional sheet feeding mechanism at two different stages of feeding a document.
  • a plurality of documents 1 are stacked in a hopper 2, one on top of each other.
  • the documents are biased toward a vacuum wheel 3 by a spring bias (not shown) or other means well known in the art.
  • the vacuum wheel 3 has holes around its circumference and an adjustable vacuum port 4 comprising a slot which aligns to a greater or lesser degree with the holes to allow a variable suction to be applied to the top document 1a.
  • the document 1a is shown with its leading edge picked up by the vacuum wheel 3 and lifted away from the other documents 1 in the hopper 2.
  • the wheel 3 lifts the document 1a over the top edge of a pick 5 which holds back the other documents in the stack.
  • the document 1a is shown passing over the pick 5 and being moved further downstream of the feeding mechanism by rollers 6 and 7.
  • the trailing edge of the top document 1a passes the holes in the wheel 4, the holes become exposed and exert suction on the second document to lift it to the vacuum wheel 3 and over the pick 4.
  • the mechanism is correctly adjusted a constant gap will be achieved between successive single documents.
  • Figure 3 illustrates an example of a drive mechanism for positioning the pick 5 relative to the vacuum wheel 3.
  • This drive mechanism comprises a first motor 9 to drive the pick in the "x" direction as illustrated by two-headed arrow 10. This positions the pick closer to or further away from the wheel 3 in a generally horizontal direction.
  • a second motor 11 drives the pick in the "y" direction as illustrated by two-headed arrow 12 to adjust the vertical position of the pick relative to the wheel 3.
  • An air blower nozzle 13 is also provided.
  • FIGS 4, 5 and 6 illustrate the operation of the vacuum wheel 4 and how the vacuum strength and position can be adjusted.
  • the stack of documents 1 is held in hopper 2.
  • the top document 1a is picked up by the vacuum wheel 3 because of suction caused by a slot in the vacuum port 4 aligning with holes 14 in the wheel 3. This lifts the leading edge of document 1a into abutment with the wheel 3 and as the wheel 3 rotates it pulls the document 1a over the pick 5, whilst leaving the other documents of the stack 1 in the hopper 2.
  • the vacuum port 4 is supported by vacuum port bearings 15 and bearing housings 16 at each end.
  • the position of the vacuum port 4 is determined by vacuum port drive motor 17 which can move the vacuum port 4 through a relatively limited angle as shown in Figures 4 and 5 .
  • the vacuum port 4 In figure 4 the vacuum port 4 is in a relatively vertical position and in figure 5 it has been rotated clockwise to subtend an angle to the vertical by the motor 17. This moves the region of suction closer to the pick 5 which is advantageous for some types of document and holds the leading edge of the document to the wheel further round the wheel 4.
  • FIG. 6 illustrates this in more detail.
  • the motor 17 has a motor arm 18 connected to a motor arm collar which is connected to the vacuum port 4.
  • the vacuum wheel 4 is supported on bearings 20 allowing the wheel 4 to rotate about the vacuum port 4 (which is fixed in position in use) under the influence of the wheel drive pulley 21 and drive belt 22 which usually drive both ends of the wheel but are only shown at one end in this figure for ease of illustration.
  • a vacuum port bearing and bearing housing 23 is shown at the lower end of the vacuum port 4 in figure 6 but is also usually repeated at both ends of the vacuum port 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Claims (19)

  1. Un mécanisme d'alimentation par aspiration pour un appareil de traitement de documents, le mécanisme d'alimentation comprenant:
    Une pince réglable (5) pour séparer une pile de documents (1) à partir d'un système de transport en aval;
    une roue rotative (3) reliée à un orifice de vide et pouvant être actionnée pour tirer un document par aspiration à partir de la partie supérieure de la pile vers la roue et déplacer le document sur la pince (5) vers le système de transport en aval;
    la roue (3) et la pince (5) étant séparées par une distance de dégagement;
    caractérisé par des moyens pour déterminer des coordonnées de réglage en fonction de caractéristiques d'un document dans la pile, dans lequel la position de la pince (5) est automatiquement réglable en deux dimensions indépendantes en fonction desdites coordonnées de réglage.
  2. Un mécanisme d'alimentation par aspiration selon la revendication 1, dans lequel les coordonnées d'ajustement sont déterminées également en fonction de la position de la pince par rapport à la roue à dépression et de la distance de dégagement souhaitée.
  3. Un mécanisme d'alimentation par aspiration selon la revendication 1 ou 2, dans lequel la distance de dégagement souhaitée est calculée en fonction de l'épaisseur du document.
  4. Un mécanisme d'alimentation par aspiration selon la revendication 1, 2 ou 3, dans lequel la distance de dégagement souhaitée est calculée en fonction des caractéristiques de flexion du document.
  5. Un mécanisme d'alimentation par aspiration selon la revendication 1, 2, 3 ou 4, comprenant en outre des moyens pour régler automatiquement l'aspiration appliquée par la roue sur le document supérieur de la pile.
  6. Un mécanisme d'alimentation par aspiration selon la revendication 5, dans lequel l'aspiration est automatiquement réglable en fonction desdites coordonnées de réglage.
  7. Un mécanisme d'alimentation par aspiration pour un appareil de traitement de documents, le mécanisme d'alimentation comprenant:
    une pince réglable (5) pour séparer une pile de documents (1) à partir d'un système de transport en aval;
    une roue rotative (3) reliée à un orifice de vide et pouvant être actionnée pour tirer un document par aspiration à partir de la partie supérieure de la pile vers la roue (3) et déplacer le document sur la pince (5) vers le système de transport en aval;
    la roue (3) et la pince (5) étant séparées par une distance de dégagement;
    caractérisé par des moyens pour déterminer des coordonnées de réglage en fonction de caractéristiques d'un document dans la pile, dans lequel l'aspiration appliquée par la roue (3) sur le document supérieur de la pile est réglable automatiquement en fonction desdites coordonnées de réglage.
  8. Un mécanisme d'alimentation par aspiration selon la revendication 6 ou 7, dans lequel le réglage d'aspiration comprend l'ajustement de la force de l'aspiration.
  9. Un mécanisme d'alimentation par aspiration selon la revendication 5, 6 ou 7, dans lequel le réglage d'aspiration comprend l'ajustement de la propagation de l'application de l'aspiration sur toute la largeur du document.
  10. Un mécanisme d'alimentation par aspiration selon la revendication 5, 6 ou 7, comprenant en outre une boucle de rétroaction.
  11. Un mécanisme d'alimentation par aspiration selon la revendication 10, dans lequel le retour d'information inclut des données correspondant à l'un quelconque ou une combinaison des facteurs suivants:
    a) le délai entre une demande de document et l'arrivée du document à une position en aval;
    b) le temps ou la distance entre les documents successifs;
    c) si deux ou plusieurs documents sont alimentés ensemble;
    d) si deux ou plusieurs documents se chevauchent.
  12. Un mécanisme d'alimentation par aspiration selon la revendication 11, dans lequel au moins l'un des facteurs est détecté par un capteur situé en aval du mécanisme d'alimentation.
  13. Un mécanisme d'alimentation par aspiration selon l'une quelconque des revendications précédentes, dans lequel les réglages initiaux de la position de la pince sont automatiquement calculés à partir des paramètres des documents.
  14. Un mécanisme d'alimentation par aspiration selon l'une quelconque des revendications précédentes, dans lequel les réglages initiaux pour l'orifice de vide sont automatiquement calculés à partir des paramètres des documents.
  15. Un mécanisme d'alimentation par aspiration selon la revendication 13 ou 14, dans lequel les paramètres initiaux sont stockés avec d'autres paramètres de lot pour une session d'alimentation particulière.
  16. Un mécanisme d'alimentation par aspiration selon l'une quelconque des revendications 13, 14 ou 15, dans lequel les paramètres comprennent des détails d'un ou plusieurs de poids, épaisseur et flexibilité des documents.
  17. Un mécanisme d'alimentation par aspiration selon l'une quelconque des revendications 13 à 16, dans lequel les paramètres sont prédéfinis comme paramètres standard au choix d'un opérateur.
  18. Un mécanisme d'alimentation par aspiration selon l'une quelconque des revendications 13 à 17, dans lequel au moins l'un des paramètres est mesuré avant l'opération d'une session d'alimentation.
  19. Un mécanisme d'alimentation par aspiration selon l'une quelconque des revendications 13 à 18, dans lequel les réglages initiaux sont stockés pour chaque lot et peuvent être utilisés à chaque fois que ce même lot doit être ré-exécuté.
EP09166050.6A 2008-07-29 2009-07-21 Dispositif d'alimentation de feuilles sous vide Not-in-force EP2149524B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0813828A GB2462262A (en) 2008-07-29 2008-07-29 Adjustable vacuum sheet feeder with adjustable sheet retaining device

Publications (3)

Publication Number Publication Date
EP2149524A2 EP2149524A2 (fr) 2010-02-03
EP2149524A3 EP2149524A3 (fr) 2012-09-05
EP2149524B1 true EP2149524B1 (fr) 2014-11-05

Family

ID=39747096

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09166050.6A Not-in-force EP2149524B1 (fr) 2008-07-29 2009-07-21 Dispositif d'alimentation de feuilles sous vide

Country Status (3)

Country Link
US (1) US20100025920A1 (fr)
EP (1) EP2149524B1 (fr)
GB (1) GB2462262A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5289279B2 (ja) * 2009-10-30 2013-09-11 株式会社東芝 紙葉類取出し装置及び紙葉類処理装置
US8534826B2 (en) * 2010-02-22 2013-09-17 Fujifilm Corporation Inkjet recording apparatus and method
JP5547575B2 (ja) * 2010-07-21 2014-07-16 富士フイルム株式会社 画像形成装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3173681A (en) * 1962-04-25 1965-03-16 Ibm Sheet handling apparatus
DE69116749T2 (de) 1990-07-06 1996-09-19 Canon Kk Blattzuführer
JPH0489743A (ja) * 1990-07-31 1992-03-23 Brother Ind Ltd 画像形成装置における給紙装置
US5163669A (en) 1990-10-11 1992-11-17 Bryce Office Systems, Inc. Paper feed mechanism having an adjustable restrainer
JPH10167504A (ja) * 1996-12-05 1998-06-23 Canon Inc 給紙装置及びこれを備えた画像形成装置
US5975519A (en) 1997-09-08 1999-11-02 Pitney Bowes Inc. Separator stone adjustment assembly
JPH11180574A (ja) * 1997-12-18 1999-07-06 Canon Inc シート給送装置
JPH11199072A (ja) * 1998-01-09 1999-07-27 Horizon International Kk バキュームロータ給紙装置
US6189883B1 (en) 1998-12-16 2001-02-20 Pitney Bowes Inc. Hi-speed pneumatic sheet feeder
JP4121209B2 (ja) * 1999-02-26 2008-07-23 東北リコー株式会社 画像形成装置における給紙装置
JP2002046879A (ja) * 2000-07-28 2002-02-12 Toshiba Corp 紙葉類処理装置と紙葉類の取出装置
US6698748B1 (en) 2000-09-25 2004-03-02 H. W. Crowley System and method for singulating a stack of sheet-like materials

Also Published As

Publication number Publication date
EP2149524A3 (fr) 2012-09-05
US20100025920A1 (en) 2010-02-04
GB0813828D0 (en) 2008-09-03
EP2149524A2 (fr) 2010-02-03
GB2462262A (en) 2010-02-03

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