EP0445029B1 - Papierbogenzuführvorrichtung mit Andrucksohle - Google Patents

Papierbogenzuführvorrichtung mit Andrucksohle Download PDF

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Publication number
EP0445029B1
EP0445029B1 EP91400531A EP91400531A EP0445029B1 EP 0445029 B1 EP0445029 B1 EP 0445029B1 EP 91400531 A EP91400531 A EP 91400531A EP 91400531 A EP91400531 A EP 91400531A EP 0445029 B1 EP0445029 B1 EP 0445029B1
Authority
EP
European Patent Office
Prior art keywords
sheets
roller
axis
take
pile
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
EP91400531A
Other languages
English (en)
French (fr)
Other versions
EP0445029A1 (de
Inventor
Guy Chevrolier
Jean-Michel Ciccone
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.)
Sagem SA
Original Assignee
Sagem 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 Sagem SA filed Critical Sagem SA
Publication of EP0445029A1 publication Critical patent/EP0445029A1/de
Application granted granted Critical
Publication of EP0445029B1 publication Critical patent/EP0445029B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/52—Friction retainers acting on under or rear side of article being separated
    • B65H3/5207—Non-driven retainers, e.g. movable retainers being moved by the motion of the article
    • B65H3/523—Non-driven retainers, e.g. movable retainers being moved by the motion of the article the retainers positioned over articles separated from the bottom of the pile
    • B65H3/5238—Retainers of the pad-type, e.g. friction pads

Definitions

  • the present invention relates to a device for supplying a machine with a series of sheets of paper arranged in a stack, comprising means for receiving the stack and means for separating each of the sheets from the stack.
  • the pressure plate is mounted movable in rotation about an axis horizontal and perpendicular to the direction of movement of the sheets and in translation substantially perpendicular to the direction of movement of the sheets.
  • the present invention aims to overcome this drawback.
  • said pressure soleplate has two projecting edges perpendicular to the path of the sheets, in contact with said flexible blade.
  • said pressure sole is provided with two wings giving it the shape of a stirrup, the wings being provided with an oblong slot in which engages one end of the axis connected to the blade.
  • elastic means are provided for returning the sheets against the drive cylinder.
  • the drive cylinder is driven in rotation about its axis, the first generator of said cylinder in contact with said flexible blade is arranged after the elastic return means on the path of the sheets and the distance between the two is seen, from the axis of the cylinder at an angle between substantially 10 degrees and substantially 30 degrees.
  • the friction surface of the drive means is made of a material whose coefficient of friction relative to the paper is substantially greater than the unit
  • the flexible retaining blade is made of a material whose coefficient of friction relative to the paper is less than substantially the unit, and the dimension, in a direction perpendicular to that of the path of the sheets, of the friction surface of the retaining means is significantly less than that of the friction surface of the means in the same direction.
  • the drive cylinder is tangent along one of its generatrices to the end sheet with which it cooperates, and the flexible blade is arranged to form an angle with the sheets of the stack other than that cooperating with the cylinder. training.
  • This embodiment is particularly simple, safe, and of a relatively low cost price.
  • the device comprises a tray for receiving the stack 2 of sheets of paper, the bottom 1 of which is inclined relative to the horizontal, so that the stack 2 is driven, under the effect of its own weight, from the side of the lower horizontal edge 11 of tray 1.
  • This assembly comprises in particular a cylinder 3, circular and with an axis parallel to the edge 11, arranged here so that the lowest sheet 21 of the stack 2 is substantially tangent to the surface of the cylinder 3.
  • the surface of the cylinder 3 is here made of rubber of hardness less than substantially 30 shores A, and its coefficient of friction with respect to the paper is of the order of 1.2.
  • the dimension of the cylinder 3 along its axis is at least of the order of magnitude of the dimension of the sheets in the same direction.
  • the cylinder 3 is driven in rotation about its axis by a motor and a suitable drive mechanism, in the direction indicated by the arrow 33, which corresponds to the friction drive of the sheet 21 out of the tray.
  • Metal blades 32 here 2 in number, resemble in an elastic manner, the sheets of the stack 2 against the cylinder 3.
  • the blades 32 each extend in a plane forming with the plane of the bottom 1 of the tank an acute angle ⁇ , and their ends press the sheets of the stack 2 at points located substantially on the tangent generator T between the cylinder 3 and the sheet 21.
  • the blades 32 have curved ends here, in particular so as not to damage the sheets, or , in the absence of leaves, the surface of cylinder 3.
  • the blades 32 are fixed on the upper part 12 of the receiving tank, which forms with the bottom 1 an angle less than the angle ⁇ , thus helping to separate the sheets from the stack 2.
  • a rubber blade 4 here with a hardness of the order of 60 shores A, and a coefficient of friction with respect to the paper equal to 0.9, is fixedly mounted in abutment against the cylinder 3.
  • the contact zone between the blade 4 and the cylinder 3 extends on the path of the sheet 21 when the latter is driven by the cylinder 3.
  • the blade 4 is fixed so that its face turned towards the side of the cylinder 3 extends, in its upper part, in the same plane as the blades 32.
  • the rubber blade 4 is longer than the metal blades 32, and because of its different flexibility, it bends so that the area on which it is in contact with the cylinder 3, delimited by a generator of the cylinder 3, or contact generator, denoted C in FIG.
  • the angle under which is seen, from the axis of the cylinder 3, the portion of the cylinder 3 between the generatrices C and T, is of the order of 15 degrees.
  • the angle could be between substantially 10 degrees and substantially 30 degrees.
  • the pressure plate 5 is provided with two wings 53 and 54 which give it the shape of a stirrup.
  • Each of the wings 53 and 54 is provided with an oblong slot in which an end 551 and 552 respectively engages, of an axis 55 parallel to the axis of the cylinder 3.
  • the axis 55 comprises a rounded bulged part 553 which comes to bear against the sole 5 itself.
  • the axis 55 is connected to a recessed elastic blade 6 for pressurizing, which thus presses the sole 5 against the blade 4.
  • the sole 5 is therefore movable in rotation about the axis 55 perpendicular to the path of the sheets, and, thanks to the oblong slots of its wings 53 and 54, around an axis parallel to this path.
  • Each of these rotations corresponds to a degree of freedom, the arrangement which has just been described forming an articulation of the "gimbal" type between the sole 5 and the embedded elastic blade 6.
  • the sole 5 also comprises two edges 51 and 52, parallel to the axis of the cylinder 3, and therefore perpendicular to the path of the sheets, in contact with the flexible blade 4.
  • the dimension of the blade 4, along the axis of the cylinder 3, that is to say perpendicular to the path of the sheets, is notably lower than that of the roller 3, and the blade 4 extends in the central part of the roller 3, the blades 32 being arranged here on either side of the blade 4.
  • the device which has just been described operates as follows.
  • the sheet 21 slides without difficulty against the sheet of the immediately upper stack, it is the only one to be driven. However, it is common for the sheet 21 carries with it one or more sheets of the stack, in particular because the coefficient of friction between the various sheets of paper is too high, or also because the sheets remain integral with each other by the roughness of their edges.
  • the friction force between the blade 4 and the sheet 21 is less than that between the cylinder 3 and the sheet 21, which has as a consequence the driving of the sheet 21.
  • the frictional force of the blade 4 is sufficient to retain, by friction, any sheet other than that which cooperates with the cylinder 3.
  • each of the sheets from the stack 2 is ensured by the cooperation of the cylinder 3 which directly drives a single sheet, and of the blade 4 which retains the sheets other than that directly trained, but which could nevertheless have been indirectly trained.
  • the pressure plate 5 due to its two degrees of freedom, is automatically put in place, and ensures constant pressure.
  • the present invention is not limited to the embodiment which has been described, and it is in particular within the reach of the skilled person to determine, for the cylinder 3 and the blade 4, materials other than those which have been described, by combining the friction forces to achieve the desired result. Good results are obtained when the coefficient of friction of the blade 4 relative to the paper is less than unity, that of the cylinder 3 relative to the paper being greater than unity.

Landscapes

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

Claims (7)

  1. Vorrichtung zum Beschicken einer Maschine mit einer Folge von zu einem Stapel (2) aufgeschichteten Papierbögen, enthaltend eine Aufnahmeeinrichtung (1) für den Stapel und eine Entnahmeeinrichtung (3, 4) für jeden einzelnen der Bögen des Stapels, bei welcher Vorrichtung
    - die Aufnahmeeinrichtung (1) für den Stapel derart gestaltet ist, daß dieser eine schräge Position einnimmt, derart, daß er sich unter dem Einfluß seines Eigengewichtes in Richtung auf die Entnahmeeinrichtung (3, 4) bewegt, und
    - wobei die Entnahmeeinrichtung einen Mitnahmezylinder (3), der durch Reibung mit der freien Fläche eines (21) der beiden äußeren Bögen des Stapels (2) zusammenwirkt und in der Bewegungsbahn der auf diese Weise mitgenommenen Bögen eine elastische Lamelle (4) enthält, die von einer starren Druckplatte (5) gegen diesen Mitnahmezylinder (3) gedrückt wird, um die anderen Bögen außer demjenigen (21), der mit dem Mitnahmezylinder (3) zusammenwirkt, zurückzuhalten,
    - wobei die Druckplatte mit zwei Freiheitsgraden entsprechend zwei Drehbewegungen beweglich gelagert ist, und zwar eine um eine Achse, die parallel zur Bewegungsbahn der Bögen liegt, und die andere um eine Achse, die senkrecht zu dieser Bewegungsbahn parallel zur Achse des Zylinders (3) liegt, dadurch gekennzeichnet, daß die Druckplatte (5) mittels eines Kardangelenks unter dem Einfluß einer elastischen, eingespannten Druckerzeugungslamelle (6) steht, welches Kardangelenk eine Achse (55), die parallel zur Achse des Zylinders (3) liegt, hat und mit dieser elastischen, eingespannten Lamelle (6) in Verbindung steht.
  2. Vorrichtung nach Anspruch 1, bei der diese Druckplatte (5) zwei senkrecht zur Bewegungsbahn der Bögen vorspringende Kanten (51, 52) aufweist, die mit dieser elastischen Lamelle (4) in Kontakt sind.
  3. Vorrichtung nach einem der Ansprüche 1 und 2, bei der diese Druckplatte (5) mit zwei Schenkeln (53, 54) versehen ist, die ihr die Form eines Bügels verleihen, wobei diese Schenkel (53, 54) jeweils mit einem Langloch versehen sind, in welches jeweils ein Ende (551, 552) der mit der Lamelle (6) in Verbindung stehenden Achse (55) eingreift.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, bei der ein elastisches Rückfederelement (32) vorgesehen ist, um die Bögen gegen den Mitnahmezylinder (3) zu drücken.
  5. Vorrichtung nach Anspruch 4, bei der der Mitnahmezylinder (3) um seine Achse in Drehung versetzbar ist, wobei die erste, mit dieser elastischen Lamelle (4) in Kontakt stehende Mantellinie (C) dieses Zylinders (3) in der Bewegungsbahn der Bögen hinter dem elastischen Rückfederelement (32) liegt, und wobei der Abstand zwischen diesen beiden ausgehend von der Achse des Zylinders (3) einem Winkel (β) entspricht, der zwischen im wesentlichen 10° und im wesentlichen 30° beträgt.
  6. Vorrichtung nach einem der Ansprüche 1 bis 5, bei der der Mitnahmezylinder (3) entsprechend einer seiner Mantellinien (T) tangential zur dem äußeren Bogen (21) liegt, mit dem er zusammenwirkt.
  7. Vorrichtung nach einem der Ansprüche 1 bis 6, bei der diese elastische Lamelle (4) so angeordnet ist, daß sie ausgenommen mit dem Bogen (21), mit dem der Mitnahmezylinder (3) zusammenwirkt, mit den anderen Bögen des Stapels (2) einen Winkel (8) bildet.
EP91400531A 1990-03-02 1991-02-27 Papierbogenzuführvorrichtung mit Andrucksohle Expired - Lifetime EP0445029B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9002630A FR2659071B1 (fr) 1990-03-02 1990-03-02 Dispositif d'alimentation d'une machine en feuilles de papier, a semelle de pression.
FR9002630 1990-03-02

Publications (2)

Publication Number Publication Date
EP0445029A1 EP0445029A1 (de) 1991-09-04
EP0445029B1 true EP0445029B1 (de) 1995-10-25

Family

ID=9394313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91400531A Expired - Lifetime EP0445029B1 (de) 1990-03-02 1991-02-27 Papierbogenzuführvorrichtung mit Andrucksohle

Country Status (5)

Country Link
EP (1) EP0445029B1 (de)
DE (1) DE69114030T2 (de)
ES (1) ES2079593T3 (de)
FR (1) FR2659071B1 (de)
GB (1) GB2242415A (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2684977B1 (fr) * 1991-12-13 1994-03-25 Monetel Sa Dispositif de desempilage.
JP3406395B2 (ja) * 1994-08-31 2003-05-12 理想科学工業株式会社 給紙装置
AUPN162595A0 (en) * 1995-03-09 1995-03-30 Amalgamated Wireless (Australasia) Limited Card picking apparatus for ticketing machine
JP4752873B2 (ja) 2008-06-20 2011-08-17 ブラザー工業株式会社 シート材搬送装置、それを備えた画像読取装置さらに画像読取装置を備えた画像記録装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3439844A1 (de) * 1983-09-14 1985-05-09 Ricoh Co., Ltd., Tokio/Tokyo Automatische blattzufuehreinrichtung
JPS6412668A (en) * 1987-07-06 1989-01-17 Canon Kk Carrying and reading device for sheet medium

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH538985A (de) * 1972-06-06 1973-07-15 Frama Ag Entnahmevorrichtung für gestapelte flache Gegenstände
US4606535A (en) * 1984-11-30 1986-08-19 The Mead Corporation Sheet feeding device
DE8437890U1 (de) * 1984-12-22 1987-04-16 Professor Alfred Krauth Apparatebau Gmbh & Co Kg, 6930 Eberbach, De
JPS63133543U (de) * 1987-02-23 1988-09-01
JPS63133538U (de) * 1987-02-23 1988-09-01
FR2640602B1 (fr) * 1988-12-20 1991-06-07 Alcatel Business Systems Depileur d'articles plats

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3439844A1 (de) * 1983-09-14 1985-05-09 Ricoh Co., Ltd., Tokio/Tokyo Automatische blattzufuehreinrichtung
JPS6412668A (en) * 1987-07-06 1989-01-17 Canon Kk Carrying and reading device for sheet medium

Also Published As

Publication number Publication date
GB9104369D0 (en) 1991-04-17
GB2242415A (en) 1991-10-02
FR2659071A1 (fr) 1991-09-06
ES2079593T3 (es) 1996-01-16
DE69114030D1 (de) 1995-11-30
EP0445029A1 (de) 1991-09-04
DE69114030T2 (de) 1996-06-20
FR2659071B1 (fr) 1992-07-24

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