EP0021398A1 - Turnover device for sheets - Google Patents

Turnover device for sheets Download PDF

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Publication number
EP0021398A1
EP0021398A1 EP80103539A EP80103539A EP0021398A1 EP 0021398 A1 EP0021398 A1 EP 0021398A1 EP 80103539 A EP80103539 A EP 80103539A EP 80103539 A EP80103539 A EP 80103539A EP 0021398 A1 EP0021398 A1 EP 0021398A1
Authority
EP
European Patent Office
Prior art keywords
sheet
turning element
front edge
turning
notch
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
EP80103539A
Other languages
German (de)
French (fr)
Other versions
EP0021398B1 (en
Inventor
Stephen Pope Garrison
Elmer Leroy Bob Kroeker
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of EP0021398A1 publication Critical patent/EP0021398A1/en
Application granted granted Critical
Publication of EP0021398B1 publication Critical patent/EP0021398B1/en
Expired 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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/38—Delivering or advancing articles from machines; Advancing articles to or into piles by movable piling or advancing arms, frames, plates, or like members with which the articles are maintained in face contact
    • B65H29/40—Members rotated about an axis perpendicular to direction of article movement, e.g. star-wheels formed by S-shaped members
    • 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
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/421—Forming a pile
    • B65H2301/4212—Forming a pile of articles substantially horizontal
    • 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
    • B65H2404/60—Other elements in face contact with handled material
    • B65H2404/65—Other elements in face contact with handled material rotating around an axis parallel to face of material and perpendicular to transport direction, e.g. star wheel
    • B65H2404/652—Other elements in face contact with handled material rotating around an axis parallel to face of material and perpendicular to transport direction, e.g. star wheel having two elements diametrically opposed

Definitions

  • the present invention relates generally to sheet feeding devices and more particularly, a device feeding, positioning and turning documents from one side to the other.
  • the devices of the prior art turning sheets from one side to the other are generally bulky and / or unreliable. Many of these devices use multiple endless drive belts and associated pulleys to drive and orient documents on the desired feed path. Other devices use spring arms to grip the edge of the sheets at the periphery of a roll. These devices often have to be subject to precise mechanical adjustments with regard to the force with which they seize the documents as well as with regard to their release.
  • the present invention consists of a simple and efficient structure for turning over documents, comprising a rotary cylindrical transfer element having slots for receiving the leading edge of the sheets to be turned over, a retaining means closing the receiving slots for retaining the edge of the sheet during part of the rotation of the cylindrical element, said retaining means being designed to open the reception slot when the latter is in the document reception position and when the cylindrical element has been rotated in document release position, said document cylindrical element which can rotate freely and the slit being designed so that the force applied by the document penetrating the slit against the bottom thereof, initiates the rotation of the cylindrical element and causes it to rotate 180 ° through the application of additional force by a feed roller.
  • FIGS 1 and 2 are schematic representations of the preferred embodiment of the device of the present invention.
  • a sheet feeding path 15 receives a sheet to be returned from the output of a printing device or a reproduction machine not shown.
  • the feed path 15 can be made of a metallic fabric or a rigid material, for example sheet metal or plastic.
  • the sheet to be turned over arrives from the left side of the feed path 15 and is stressed by the drive roller 4 and the guide roller 5 which may be continuous cylindrical rollers of length equal to or less than the width of the path 15.
  • the drive roller 4 and the guide roller 5 are single rollers, these could be cylindrical rollers multiples mounted one after the other but separated by a certain interval, on a shaft arranged over the entire width of the feed path 15.
  • the drive roller 4 is mounted coaxially with the pinion 9 on the shaft 25.
  • the force driving the roller 4 is applied to the shaft 25 by the pinion 9 itself driven by the main control unit 16 which may consist of a pinion mounted on the shaft of an electric motor, or the pinion 9 can be driven by any other drive device of the system not shown in the figure.
  • the guide roller 5 is biased against the drive roller 4 by the spring 17, one end of which is fixed to the arm carrying the shaft on which the guide roller is mounted 5.
  • This guide roller support arm is pivotally mounted in 26.
  • the drive roller 4 in combination with the guide roller 5 drives the sheets into the turning roller 6.
  • the turning roller 6 is composed of a number of cylindrical rollers mounted one after the other but separated by a certain interval, on a shaft.
  • Each turning roller 6 has two slots 18, 18 ′ with flared entry and separated by 180 ° on the periphery of said turning roller in which the edge of the sheets to be turned is engaged.
  • the flared entry of each of the slots 18, 18 ′ has a more open side 23, 23 ′ which acts as a guide surface for the edge of the sheet penetrating into the slot.
  • the slots 18, 18 'with flared opening are machined in the mass of the turning rollers 6, so that the force applied against their closed end 19, 19' by the engaged sheet has the same effect as a tangential force applied to the surface of the turning rollers 6 to start their rotation.
  • the turning rollers 6 are fixed to a shaft which rotates freely and they normally occupy position A.
  • the shaft can also be mounted in a fixed position and the rollers rotate freely on the shaft.
  • a feed roller 7 is mounted on a shaft in a position adjacent to the turning rollers 6 and is carried by a pivoting arm 8 which rotates freely on the shaft 25 of the drive roller.
  • the feed roller 7 is driven by the pinion 24 which meshes with the pinion 9 of the drive roller.
  • the gear ratio of the feed roller pinion 24 and the drive roller pinion 9 is chosen so that the peripheral speed of the feed roller 24 is equal to or slightly lower than that of the drive roller 4.
  • the feed roller 7 is biased against the turning rollers 6 by the spring 17 and the eccentric stop 10 prevents it from biasing the flared side 23 of the slots 19 machined in the turning rollers.
  • the feed roller 7 consists of a single cylindrical roller of a length allowing the loading of all the turning rollers 6.
  • the feed rollers 7 could be composed of several rollers mounted one at a time. following the others and adjacent to the turning rollers 6.
  • An element 11 for retaining the edge of the sheets introduced into the slots 18 is fixed to the end of each turning roller 6 and slides while being guided by the pins 20 and 21.
  • the retaining element 11 has elongated buttonholes in which are housed the pins 20 and 21 as well as the shaft of the turning rollers, and is movable in translation until its race is stopped by one of the edges of each slot 18 opposite the flared sides 23.
  • a flexible blade 12 is arranged so that its inclined end 12 'bears against the circular guide surface 22 projecting from each retaining element 11 and tends to slide the retaining element as soon as it has exceeded an angular position corresponding to the 'angle of the inclined end 12' of the blade 12 (position B).
  • the flexible blade 12 also acts as the front wall of the output bin 13 and tends to release the edge of the sheet 14 from the slot 18 of the return roller. once the turnaround has been executed.
  • the sheet 14 arrives via the feed path 15 and is gripped between the drive roller 4 and the guide roller 5.
  • the turning rollers 6 are arranged at A and the drive roller 4 drives the sheet 14 in the slot 18 with a flared opening, formed in the turning rollers 6.
  • the roller 4 continues to push the sheet 14, which causes rotation turning rollers 6 at position B.
  • the feed roller 7 urges their outer surface via the sheet 14. The feed roller 7 rotates the turning rollers 6 and the sheet 14 to position C.
  • the retaining element 11 is tilted in the high position by the bent part 12 'of the flexible blade 12 in order to block the edge of the sheet 14 against the e upper rectilinear edge of the slot 18 in order to hold said sheet 14 there.
  • the feed roller 7 is released from their periphery due to the flared side 23 of the slot 18 which arrives in a position adjacent to the feed roller 7 and the eccentric stop 10 prohibited any movement of the arm 8.
  • the turning rollers 6 are then no longer driven by the roller 7, but the driving roller 4 continues to push the sheet 14 until the rear edge of the latter has exceeded this roller .
  • the front edge of the sheet 14 is now always retained in the slot 18 of the turning rollers 6 while the rest of the sheet rests on the stack of the output tray 13.
  • the end 12 ′ of the flexible blade 12 causes the element to slide. retaining ment 11 as soon as it has exceeded the angular position B to block the second sheet in the second slot 18 and at the same time to release the first sheet resting on the top of the stack of the output bin 13. Simultaneously, the front edge of the first sheet resting on the top of the stack of the output bin 13 and which is still in the first slot 18, bears against the flexible blade 12, which releases it from said first slot 18. This operation is repeated for each sheet to be returned arriving by the feed path.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Discharge By Other Means (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Abstract

Le dispositif comprend un tambour rotatif (6) présentant deux encoches (18) diamétralement opposées pour recevoir le bord avant des feuilles devant être retournées et un moyen de retenue (11) coinçant la feuille dans l'encoche pendant une partie de la rotation du tambour. La feuille entraînée par les rouleaux (4, 5) pénètre dans l'encoche supérieure (18) et fait tourner le tambour (6). Lorsque celui-ci arrive en position angulaire B, il est entraîné par le rouleau (7) et la feuille est coincée par le coulisseau 11. Quand le tambour (6) a tourné de 180° après la position B, le coulisseau (11) bascule, il dégage la feuille et en même temps coince la feuille qui a été introduite dans la seconde encoche (18).The device comprises a rotary drum (6) having two diametrically opposite notches (18) for receiving the front edge of the sheets to be turned over and a retaining means (11) wedging the sheet in the notch during part of the rotation of the drum . The sheet driven by the rollers (4, 5) enters the upper notch (18) and rotates the drum (6). When the latter arrives at angular position B, it is driven by the roller (7) and the sheet is jammed by the slide 11. When the drum (6) has turned 180 ° after position B, the slide (11) tilts, it releases the sheet and at the same time jams the sheet which has been introduced into the second notch (18).

Description

Domaine techniqueTechnical area

La présente invention concerne d'une manière générale les dispositifs d'alimentation de feuilles et plus particulièrement, un dispositif alimentant, positionnant et retournant des documents d'un côté sur l'autre.The present invention relates generally to sheet feeding devices and more particularly, a device feeding, positioning and turning documents from one side to the other.

Etat de la technique antérieureState of the prior art

Les dispositifs de l'art antérieur retournant des feuilles d'un côté sur l'autre sont généralement encombrants et/ou peu fiables. Beaucoup de ces dispositifs utilisent plusieurs courroies d'entraînement sans fin et des poulies associées pour entraîner et orienter les documents sur la trajectoire d'alimentation désirée. D'autres dispositifs utilisent des bras à ressorts pour saisir le bord des feuilles à la périphérie d'un rouleau. Ces dispositifs doivent souvent faire l'objet de réglages mécaniques précis en ce qui concerne la force avec laquelle ils saisissent les documents ainsi qu'en ce qui concerne le relâchement de ceux-ci.The devices of the prior art turning sheets from one side to the other are generally bulky and / or unreliable. Many of these devices use multiple endless drive belts and associated pulleys to drive and orient documents on the desired feed path. Other devices use spring arms to grip the edge of the sheets at the periphery of a roll. These devices often have to be subject to precise mechanical adjustments with regard to the force with which they seize the documents as well as with regard to their release.

Exposé de l'inventionStatement of the invention

La présente invention consiste en une structure simple et efficace de retournement de documents, comprenant un élément de transfert cylindrique rotatif présentant des fentes pour la réception du bord avant des feuilles devant être retournées, un moyen de retenue fermant les fentes de réception pour retenir le bord de la feuille pendant une partie de la rotation de l'élément cylindrique, ledit moyen de retenue étant conçu pour ouvrir la fente de réception lorsque celle-ci est en position de réception de document et lorsque l'élément cylindrique a été entraîné en rotation en position de relâchement du document, ledit élément cylindrique pouvant tourner librement et la fente étant conçue de façon que la force appliquée par le document pénétrant dans la fente contre le fond de celle-ci, amorce la rotation de l'élément cylindrique et provoque la rotation de celui-ci sur 180° grâce à l'application d'une force supplémentaire par un rouleau d'alimentation.The present invention consists of a simple and efficient structure for turning over documents, comprising a rotary cylindrical transfer element having slots for receiving the leading edge of the sheets to be turned over, a retaining means closing the receiving slots for retaining the edge of the sheet during part of the rotation of the cylindrical element, said retaining means being designed to open the reception slot when the latter is in the document reception position and when the cylindrical element has been rotated in document release position, said document cylindrical element which can rotate freely and the slit being designed so that the force applied by the document penetrating the slit against the bottom thereof, initiates the rotation of the cylindrical element and causes it to rotate 180 ° through the application of additional force by a feed roller.

D'autres caractéristiques et avantages de la présente invention ressortiront mieux de l'exposé qui suit, fait en référence aux dessins annexés à ce texte, qui représentent un mode de réalisation préféré de celle-ci.Other characteristics and advantages of the present invention will emerge more clearly from the following description, made with reference to the drawings appended to this text, which represent a preferred embodiment of the latter.

Brève description des figuresBrief description of the figures

  • La Figure 1 est une vue de côté schématique du dispositif de retournement de feuilles de la présente invention ainsi que des chemins et des rouleaux d'alimentation et du bac de sortie associé.Figure 1 is a schematic side view of the sheet turning device of the present invention as well as feed paths and rollers and the associated output bin.
  • La Figure 2 est une vue schématique de l'avant du dispositif de retournement de feuilles de la présente invention.Figure 2 is a schematic view of the front of the sheet turning device of the present invention.
Description de l'inventionDescription of the invention

Les Figures 1 et 2 sont des représentations schématiques de la réalisation préférée du dispositif de la présente invention. Un chemin d'alimentation des feuilles 15 reçoit une feuille à retourner depuis la sortie d'un dispositif d'impression ou d'une machine de reproduction non représentée. Le chemin d'alimentation 15 peut être réalisé en une toile métallique ou en un matériau rigide, par exemple en tôle ou en matière plastique. La feuille à retourner arrive par le côté gauche du chemin d'alimentation 15 et est sollicitée par le rouleau d'entraînement 4 et le rouleau de guidage 5 qui peuvent être des rouleaux cylindriques continus de longueur égale ou inférieure a la largeur du chemin 15. Bien que dans la réalisation préférée le rouleau d'entraînement 4 et le rouleau de guidage 5 soient des rouleaux simples, ceux-ci pourraient être des rouleaux cylindriques multiples montés les uns à la suite des autres mais séparés par un certain intervalle, sur un arbre disposé sur toute la largeur du chemin d'alimentation 15. Le rouleau d'entraînement 4 est monté coaxialement avec le pignon 9 sur l'arbre 25. La force entraînant le rouleau 4 est appliquée à l'arbre 25 par le pignon 9 lui-même entraîné par l'unité de commande principale 16 qui peut consister en un pignon monté sur l'arbre d'un moteur électrique, ou le pignon 9 peut être entraîné par tout autre dispositif d'entraînement du système non représenté sur la figure.Figures 1 and 2 are schematic representations of the preferred embodiment of the device of the present invention. A sheet feeding path 15 receives a sheet to be returned from the output of a printing device or a reproduction machine not shown. The feed path 15 can be made of a metallic fabric or a rigid material, for example sheet metal or plastic. The sheet to be turned over arrives from the left side of the feed path 15 and is stressed by the drive roller 4 and the guide roller 5 which may be continuous cylindrical rollers of length equal to or less than the width of the path 15. Although in the preferred embodiment the drive roller 4 and the guide roller 5 are single rollers, these could be cylindrical rollers multiples mounted one after the other but separated by a certain interval, on a shaft arranged over the entire width of the feed path 15. The drive roller 4 is mounted coaxially with the pinion 9 on the shaft 25. The force driving the roller 4 is applied to the shaft 25 by the pinion 9 itself driven by the main control unit 16 which may consist of a pinion mounted on the shaft of an electric motor, or the pinion 9 can be driven by any other drive device of the system not shown in the figure.

Le rouleau de guidage 5 est rappelé contre le rouleau d'entraînement 4 par le ressort 17 dont une extrémité est fixée au bras portant l'arbre sur lequel est monté le rouleau de guidage 5. Ce bras porte-rouleau de guidage est monté pivotant en 26. Le rouleau d'entraînement 4 en association avec le rouleau de guidage 5 assure l'entraînement des feuilles dans le rouleau de retournement 6.The guide roller 5 is biased against the drive roller 4 by the spring 17, one end of which is fixed to the arm carrying the shaft on which the guide roller is mounted 5. This guide roller support arm is pivotally mounted in 26. The drive roller 4 in combination with the guide roller 5 drives the sheets into the turning roller 6.

Le rouleau de retournement 6 est composé d'un certain nombre de rouleaux cylindriques montés les uns à la suite des autres mais séparés par un certain intervalle, sur un arbre. Chaque rouleau de retournement 6 présente deux fentes 18, 18' à entrée évasée et séparées de 180° sur la périphérie dudit rouleau de retournement dans lequel le bord des feuilles à retourner est engagé. L'entrée évasée de chacune des fentes 18, 18' présente un côté plus ouvert 23, 23' qui fait fonction de surface de guidage du bord de la feuille pénétrant dans la fente. Les fentes 18, 18' à ouverture évasée sont usinées dans la masse des rouleaux de retournement 6, de façon que la force appliquée contre leur extrémité fermée 19, 19' par la feuille engagée ait le même effet qu'une force tangentielle appliquée à la surface des rouleaux de retournement 6 pour amorcer leur rotation. Les rouleaux de retournement 6 sont fixés à un arbre qui tourne librement et ils occupent normalement la position A. L'arbre peut aussi être monté en position fixe et les rouleaux tourner librement sur l'arbre.The turning roller 6 is composed of a number of cylindrical rollers mounted one after the other but separated by a certain interval, on a shaft. Each turning roller 6 has two slots 18, 18 ′ with flared entry and separated by 180 ° on the periphery of said turning roller in which the edge of the sheets to be turned is engaged. The flared entry of each of the slots 18, 18 ′ has a more open side 23, 23 ′ which acts as a guide surface for the edge of the sheet penetrating into the slot. The slots 18, 18 'with flared opening are machined in the mass of the turning rollers 6, so that the force applied against their closed end 19, 19' by the engaged sheet has the same effect as a tangential force applied to the surface of the turning rollers 6 to start their rotation. The turning rollers 6 are fixed to a shaft which rotates freely and they normally occupy position A. The shaft can also be mounted in a fixed position and the rollers rotate freely on the shaft.

Un rouleau d'alimentation 7 est monté sur un arbre dans une position adjacente aux rouleaux de retournement 6 et est porté par un bras pivotant 8 qui tourne librement sur l'arbre 25 du rouleau d'entraînement. Le rouleau d'alimentation 7 est entraîne par le pignon 24 qui engrène avec le pignon 9 du rouleau d'entraînement. Le rapport d'engrenage du pignon de rouleau d'alimentation 24 et du pignon de rouleau d'entraînement 9 est choisi de façon que la vitesse périphérique du rouleau d'alimentation 24 soit égale ou légèrement inférieure à celle du rouleau d'entraînement 4. Le rouleau d'alimentation 7 est rappelé contre les rouleaux de retournement 6 par le ressort 17 et la butée excentrique 10 l'empêche de solliciter le côté évasé 23 des fentes 19 usinées dans les rouleaux de retournement. Dans la réalisation préférée, le rouleau d'alimentation 7 consiste en un seul rouleau cylindrique d'une longueur permettant la sollicitation de tous les rouleaux de retournement 6. Cependant, les rouleaux d'alimentation 7 pourraient être composés de plusieurs rouleaux montés les uns à la suite des autres et adjacents aux rouleaux de retournement 6.A feed roller 7 is mounted on a shaft in a position adjacent to the turning rollers 6 and is carried by a pivoting arm 8 which rotates freely on the shaft 25 of the drive roller. The feed roller 7 is driven by the pinion 24 which meshes with the pinion 9 of the drive roller. The gear ratio of the feed roller pinion 24 and the drive roller pinion 9 is chosen so that the peripheral speed of the feed roller 24 is equal to or slightly lower than that of the drive roller 4. The feed roller 7 is biased against the turning rollers 6 by the spring 17 and the eccentric stop 10 prevents it from biasing the flared side 23 of the slots 19 machined in the turning rollers. In the preferred embodiment, the feed roller 7 consists of a single cylindrical roller of a length allowing the loading of all the turning rollers 6. However, the feed rollers 7 could be composed of several rollers mounted one at a time. following the others and adjacent to the turning rollers 6.

Un élément 11 de retenue du bord des feuilles introduites dans les fentes 18 est fixé à l'extrémité de chaque rouleau de retournement 6 et coulisse en étant guidé par les tétons 20 et 21. L'élément de retenue 11 présente des boutonnières allongées dans lesquelles sont logés les tétons 20 et 21 ainsi que l'arbre des rouleaux de retournement, et est mobile en translation jusqu'à ce que sa course soit stoppée par l'un des bords de chaque fente 18 opposés aux côtés évasés 23. Une lame flexible 12 est disposée de façon que son extrémité inclinée 12' porte contre la surface de guidage circulaire 22 faisant saillie sur chaque élément de retenue 11 et tende à faire coulisser l'élément de retenue dès que celui-ci a dépassé une position angulaire correspondant à l'angle de l'extrémité inclinée 12' de la lame 12 (position B). La lame flexible 12 fait également fonction de paroi avant du bac de sortie 13 et tend à dégager le bord de la feuille 14 de la fente 18 du rouleau de retournement une fois que le retournement a été exécuté.An element 11 for retaining the edge of the sheets introduced into the slots 18 is fixed to the end of each turning roller 6 and slides while being guided by the pins 20 and 21. The retaining element 11 has elongated buttonholes in which are housed the pins 20 and 21 as well as the shaft of the turning rollers, and is movable in translation until its race is stopped by one of the edges of each slot 18 opposite the flared sides 23. A flexible blade 12 is arranged so that its inclined end 12 'bears against the circular guide surface 22 projecting from each retaining element 11 and tends to slide the retaining element as soon as it has exceeded an angular position corresponding to the 'angle of the inclined end 12' of the blade 12 (position B). The flexible blade 12 also acts as the front wall of the output bin 13 and tends to release the edge of the sheet 14 from the slot 18 of the return roller. once the turnaround has been executed.

En fonctionnement, la feuille 14 arrive par le chemin d'alimentation 15 et est saisie entre le rouleau d'en- taînement 4 et le rouleau de guidage 5. Les rouleaux de retournement 6 sont disposés en A et le rouleau d'entraînement 4 entraîne la feuille 14 dans la fente 18 à ouverture évasée, ménagée dans les rouleaux de retournement 6. Lorsque le bord de la feuille 14 est engagé à fond dans la fente 18, le rouleau 4 continue de pousser la feuille 14, ce qui provoque la rotation des rouleaux de retournement 6 à la position B. Lorsque les rouleaux de retournement 6 atteignent la position B, le rouleau d'alimentation 7 sollicite leur surface extérieure par l'intermédiaire de la feuille 14. Le rouleau d'alimentation 7 entraîne en rotation les rouleaux de retournement 6 et la feuille 14 jusqu'à la position C. De plus, à partir de la position B, l'élément de retenue 11 est basculé en position haute par la partie coudée 12' de la lame flexible 12 afin de bloquer le bord de la feuille 14 contre le bord rectiligne supérieur de la fente 18 afin d'y maintenir ladite feuille 14.In operation, the sheet 14 arrives via the feed path 15 and is gripped between the drive roller 4 and the guide roller 5. The turning rollers 6 are arranged at A and the drive roller 4 drives the sheet 14 in the slot 18 with a flared opening, formed in the turning rollers 6. When the edge of the sheet 14 is fully engaged in the slot 18, the roller 4 continues to push the sheet 14, which causes rotation turning rollers 6 at position B. When the turning rollers 6 reach position B, the feed roller 7 urges their outer surface via the sheet 14. The feed roller 7 rotates the turning rollers 6 and the sheet 14 to position C. In addition, from position B, the retaining element 11 is tilted in the high position by the bent part 12 'of the flexible blade 12 in order to block the edge of the sheet 14 against the e upper rectilinear edge of the slot 18 in order to hold said sheet 14 there.

Lorsque les rouleaux de retournement 6 atteignent la position C, le rouleau d'alimentation 7 est dégagé de leur périphérie en raison du côté évasé 23 de la fente 18 qui arrive dans une position adjacente au rouleau d'alimentation 7 et la butée excentrique 10 interdit tout mouvement du bras 8. Les rouleaux de retournement 6 ne sont alors plus entraînés par le rouleau 7, mais le rouleau d'entraînement 4 continue de pousser la feuille 14 jusqu'à ce que le bord arrière de celle-ci ait dépassé ce rouleau. Le bord avant de la feuille 14 se trouve maintenant toujours retenu dans la fente 18 des rouleaux de retournement 6 tandis que le reste de la feuille repose sur la pile du bac de sortie 13.When the turning rollers 6 reach position C, the feed roller 7 is released from their periphery due to the flared side 23 of the slot 18 which arrives in a position adjacent to the feed roller 7 and the eccentric stop 10 prohibited any movement of the arm 8. The turning rollers 6 are then no longer driven by the roller 7, but the driving roller 4 continues to push the sheet 14 until the rear edge of the latter has exceeded this roller . The front edge of the sheet 14 is now always retained in the slot 18 of the turning rollers 6 while the rest of the sheet rests on the stack of the output tray 13.

Lorsque le rouleau d'entraînement 4 saisit le bord avant de la feuille suivante et l'engage dans la deuxième fente 18 et que les, rouleaux de retournement commencent à tourner, l'extrémité 12' de la lame flexible 12 fait coulisser l'élément de retenue 11 dès que celui-ci a dépassé la position angulaire B pour bloquer la deuxième feuille dans la deuxième fente 18 et en même temps pour libérer la première feuille reposant sur le haut de la pile du bac de sortie 13. Simultanément, le bord avant de la première feuille reposant sur le haut de la pile du bac de sortie 13 et qui se trouve toujours dans la première fente 18, porte contre la lame flexible 12, ce qui le dégage de ladite première fente 18. Cette opération est répétée pour chaque feuille à retourner arrivant par le chemin d'alimentation.When the drive roller 4 grasps the front edge of the next sheet and engages it in the second slot 18 and the turning rollers start to rotate, the end 12 ′ of the flexible blade 12 causes the element to slide. retaining ment 11 as soon as it has exceeded the angular position B to block the second sheet in the second slot 18 and at the same time to release the first sheet resting on the top of the stack of the output bin 13. Simultaneously, the front edge of the first sheet resting on the top of the stack of the output bin 13 and which is still in the first slot 18, bears against the flexible blade 12, which releases it from said first slot 18. This operation is repeated for each sheet to be returned arriving by the feed path.

Bien que l'on ait décrit dans ce qui précède et représenté sur les dessins les caractéristiques essentielles de l'invention appliquées à un mode de réalisation préféré de celle-ci, il est évident que l'homme de l'art peut y apporter toutes modifications de forme ou de détail qu'il juge utiles, sans pour autant sortir du cadre de ladite invention.Although the essential characteristics of the invention applied to a preferred embodiment of the invention have been described in the foregoing and represented in the drawings, it is obvious that a person skilled in the art can provide all of them. modifications of form or detail which he judges useful, without departing from the scope of said invention.

Claims (11)

1.- Dispositif de retournement de feuilles, caractérisé en ce qu'il comporte: un élément de retournement rotatif 6, de forme générale cylindrique, des moyens de transport de feuille 4, 5 pour amener le bord avant d'une feuille sur ledit élément de retournement sensiblement tangentiellement à celui-ci, des moyens d'entraînement 7 pour faire tourner ledit élément de retournement 6 dans un sens correspondant au mouvement imposé à la feuille par lesdits moyens de transport de feuille 4, 5, des moyens de retenue de feuille 11 disposés sur la périphérie dudit élément de retournement 6, des moyens de commande 12', 22 pour actionner lesdits moyens de retenue 11 après que le bord avant d'une feuille a est amené sur ledit élément de retournement 6 et pour relâcher lesdits moyens de retenue 11 lorsque ledit élément de retournement 6 a effectué une rotation d'environ 180°, et des moyens de réception 13 de feuilles pour recevoir ladite feuille après ladite rotation d'environ 180° dudit élément de retournement 6. 1.- Sheet turning device, characterized in that it comprises: a rotary turning element 6, of generally cylindrical shape, sheet transport means 4, 5 for bringing the front edge of a sheet onto said turning element substantially tangential thereto, drive means 7 for rotating said turning element 6 in a direction corresponding to the movement imposed on the sheet by said sheet transport means 4, 5, sheet retaining means 11 arranged on the periphery of said turning element 6, control means 12 ′, 22 for actuating said retaining means 11 after the front edge of a sheet has been brought to said turning element 6 and for releasing said retaining means 11 when said turning element 6 has made a rotation of about 180 °, and means 13 for receiving sheets to receive said sheet after said rotation of about 180 ° from said turning element 6. 2.- Dispositif selon la revendication 1, caractérisé en ce que lesdits moyens de commande 12', 22 desdits moyens de retenue 11 comprennent des moyens sensibles à la position angulaire dudit élément de retournement 6.2.- Device according to claim 1, characterized in that said control means 12 ', 22 of said retaining means 11 comprise means sensitive to the angular position of said turning element 6. 3.- Dispositif selon la revendication 1 ou 2, caractérisé en ce que ledit élément de retournement 6 comporte au moins un élément de butée 19 disposé au voisinage de sa périphérie pour coopérer avec le bord avant d'une feuille lorsque celle-ci est amenée par lesdits moyens de transport 4, 5 et faire tourner ledit élément de retournement 6 à partir de sa position de repos A sous l'effet de la poussée exercée par ledit bord avant de la feuille contre ladite butée 12.3.- Device according to claim 1 or 2, characterized in that said turning element 6 comprises at least one stop element 19 disposed in the vicinity of its periphery to cooperate with the front edge of a sheet when the latter is brought by said transport means 4, 5 and rotate said turning element 6 from its rest position A under the effect of the thrust exerted by said front edge of the sheet against said stop 12. 4.- Dispositif selon la revendication 3, caractérisé en ce que lesdits moyens d'entraînement 7 sont conçus pour entraîner en rotation ledit élément de retournement après que ce dernier a atteint une position angulaire prédéterminée B faisant un angle a avec la position de repos A sous l'effet de la poussée exercée par la feuille sur ladite butée 19, et pour cesser d'entraîner ledit élément de retournement 6 après une rotation d'environ 180° à partir de sa position de repos A.4.- Device according to claim 3, characterized in that said drive means 7 are designed to rotate said turning element after the latter has reached a predetermined angular position B making an angle a with the rest position A under the effect of the thrust exerted by the sheet on said stopper 19, and to stop driving said turning element 6 after a rotation of approximately 180 ° from its rest position A. 5.- Dispositif selon la revendication 4, caractérisé en ce que lesdits moyens d'entraînement 7 comprennent un rouleau en rotation continue coopérant avec un secteur angulaire de la périphérie dudit élément de retournement 6 de valeur 180° - a.5.- Device according to claim 4, characterized in that said drive means 7 comprise a continuously rotating roller cooperating with an angular sector of the periphery of said turning element 6 of value 180 ° - a. 6.- Dispositif selon la revendication 3, 4 ou 5, caractérisé en ce que: ledit élément de retournement comporte au moins une encoche 18 disposée au voisinage de sa périphérie, dont le fond constitue ledit élément de butée 19, et lesdits moyens de retenue 11, lorsqu'ils sont en position active, viennent coincer le bord avant de la feuille contre l'une des parois latérales de ladite encoche 18. 6.- Device according to claim 3, 4 or 5, characterized in that: said turning element comprises at least one notch 18 disposed in the vicinity of its periphery, the bottom of which constitutes said stop element 19, and said retaining means 11, when in the active position, wedge the front edge of the sheet against one of the side walls of said notch 18. 7.- Dispositif selon la revendication 6, caractérisé en ce que: ledit élément de retournement 6 comporte deux encoches identiques 18 disposées à 180° l'une de l'autre, et lesdits moyens de retenue 11 sont conçus pour venir coincer la feuille dont le bord avant est dans la première encoche 18, lorsque ledit élément de retournement 6 a dépassé ladite position prédéterminée B sous la poussée exercée par ladite feuille, et relâcher une seconde feuille dont le bord avant est dans la seconde encoche 18, cette seconde feuille étant alors libérée pour venir se poser en position retournée sur lesdits moyens de réception de feuille 13. 7.- Device according to claim 6, characterized in that: said turning element 6 comprises two identical notches 18 arranged at 180 ° from one another, and said retaining means 11 are designed to wedge the sheet whose front edge is in the first notch 18, when said turning element 6 has exceeded said predetermined position B under the thrust exerted by said sheet, and release a second sheet whose front edge is in the second notch 18, this second sheet then being released so as to come to rest in the inverted position on said sheet receiving means 13. 8.- Dispositif selon la revendication 7, caractérisé en ce que: lesdits moyens de retenue 11 sont constitués par au moins un organe coulissant monté sur l'une des parois latérales dudit élément de retournement 6 de façon à pouvoir coulisser selon un diamètre dudit élément de retournement 6 entre une première position où il coince la feuille dont le bord avant est situé dans la première encoche 18 et où il ne coince pas la feuille dont le bord avant est situé dans la seconde encoche 18, et une seconde position où il agit en sens inverse. 8.- Device according to claim 7, characterized in that: said retaining means 11 are constituted by at least one sliding member mounted on one of the side walls of said turning element 6 so as to be able to slide along a diameter of said turning element 6 between a first position where it wedges the sheet whose front edge is located in the first notch 18 and where it does not jam the sheet whose front edge is located in the second notch 18, and a second position where it acts in the opposite direction. 9.- Dispositif selon la revendication 8, caractérisé en ce que lesdits moyens de commande 12', 22 sont conçus pour faire basculer ledit organe coulissant de ladite seconde à ladite première position lorsque ledit élément de retournement 6 a dépassé ladite position prédéterminée B, et pour le faire basculer de ladite première à ladite seconde position lorsque ledit élément de retournement a dépassé la position angulaire opposée à ladite position prédéterminée B.9.- Device according to claim 8, characterized in that said control means 12 ', 22 are designed to tilt said sliding member from said second to said first position when said turning element 6 has exceeded said predetermined position B, and to tilt it from said first to said second position when said turning element has exceeded the angular position opposite to said predetermined position B. 10.- Dispositif selon la revendication 9, caractérisé en ce que lesdits moyens de réception de feuille 13 comportent une paroi latérale 12 contre laquelle une partie au moins du bord avant de la feuille retournée vient buter lorsque ledit élément de retournement a tourné de 180° après ladite position prédéterminée B, ce qui a pour effet de dégager complètement la feuille de l'encoche 18 lorsque ledit élément de retournement 6 continue sa rotation, et de la laisser venir se poser en position retournée sur lesdits moyens de réception 13.10.- Device according to claim 9, characterized in that said sheet receiving means 13 comprise a side wall 12 against which a at least part of the front edge of the inverted sheet abuts when said turning element has rotated 180 ° after said predetermined position B, which has the effect of completely disengaging the sheet from the notch 18 when said turning element 6 continues its rotation, and letting it come to rest in the inverted position on said receiving means 13. 11.- Dispositif selon la revendication 10, caractérisé en ce que: l'extrémité supérieure de ladite paroi latérale 12 comporte une partie flexible 12' faisant un angle a avec la direction angulaire de ladite position de repos A, et ledit organe coulissant 11 est monté coulissant sur l'axe dudit élément de retournement 6 et comporte une surface de guidage circulaire 22 coopérant avec ladite partie flexible 12', la pression exercée par ladite partie 12' sur ladite surface de guidage 22 permettant de faire coulisser ledit organe 11 de ladite première à ladite seconde position et inversement chaque fois que ce dernier a dépassé la position angulaire B, à 180° près. 11.- Device according to claim 10, characterized in that: the upper end of said side wall 12 comprises a flexible part 12 ′ forming an angle a with the angular direction of said rest position A, and said sliding member 11 is slidably mounted on the axis of said turning element 6 and has a circular guide surface 22 cooperating with said flexible part 12 ', the pressure exerted by said part 12' on said guide surface 22 making it possible to slide said member 11 from said first to said second position and vice versa each time the latter has exceeded the angular position B, to within 180 °.
EP80103539A 1979-06-29 1980-06-24 Turnover device for sheets Expired EP0021398B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/053,651 US4252309A (en) 1979-06-29 1979-06-29 Document sheet flipper
US53651 1979-06-29

Publications (2)

Publication Number Publication Date
EP0021398A1 true EP0021398A1 (en) 1981-01-07
EP0021398B1 EP0021398B1 (en) 1983-07-06

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ID=21985694

Family Applications (1)

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EP80103539A Expired EP0021398B1 (en) 1979-06-29 1980-06-24 Turnover device for sheets

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US (1) US4252309A (en)
EP (1) EP0021398B1 (en)
JP (1) JPS567866A (en)
CA (1) CA1135734A (en)
DE (1) DE3064026D1 (en)
IT (1) IT1149968B (en)

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EP0200481A2 (en) * 1985-04-27 1986-11-05 Fujitsu Limited Media receiving unit
EP0274989A2 (en) * 1987-01-16 1988-07-20 Nippon I.C.S. Kabushiki Kaisha Perfecting printer
CN112895736A (en) * 2021-01-18 2021-06-04 高羽洪 Based on many surfaces are spouted a yard turning device for electronic product processing

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US5145170A (en) * 1988-08-22 1992-09-08 Fuji Photo Film Co., Ltd. Drum for image recording apparatus having a guide member with a sheet retaining member
US5108085A (en) * 1989-05-22 1992-04-28 The Dow Chemical Company Apparatus and method for the production of flexible products
JP2807517B2 (en) * 1989-12-29 1998-10-08 凸版印刷株式会社 Cosmetic material
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US5261655A (en) * 1992-12-28 1993-11-16 Xerox Corporation Disk stacker with intermittent corrugation assistance for small sheets
EP1038665B1 (en) 1998-07-14 2016-04-20 Dai Nippon Printing Co., Ltd. Decorative material
JP2972770B1 (en) * 1998-11-18 1999-11-08 日本電気データ機器株式会社 Paper reversal ejection mechanism
US6203007B1 (en) 1998-12-16 2001-03-20 Samsung Electronics Co., Ltd. Paper discharging mechanism for an image processing apparatus
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DE10338596B4 (en) * 2003-08-22 2010-04-29 Eastman Kodak Co. Device for storing sheets for a printing press
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JP6449972B1 (en) 2017-12-05 2019-01-09 日本金銭機械株式会社 Paper sheet storage unit and paper sheet processing apparatus
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GB2173484A (en) * 1985-04-12 1986-10-15 Xerox Corp Sheet stacker
EP0200481A2 (en) * 1985-04-27 1986-11-05 Fujitsu Limited Media receiving unit
EP0200481A3 (en) * 1985-04-27 1988-06-22 Fujitsu Limited Media receiving unit
US4969641A (en) * 1985-04-27 1990-11-13 Fujitsu Limited Media receiving unit
EP0274989A2 (en) * 1987-01-16 1988-07-20 Nippon I.C.S. Kabushiki Kaisha Perfecting printer
EP0274989A3 (en) * 1987-01-16 1990-07-04 Nippon I.C.S. Kabushiki Kaisha Perfecting printer
CN112895736A (en) * 2021-01-18 2021-06-04 高羽洪 Based on many surfaces are spouted a yard turning device for electronic product processing

Also Published As

Publication number Publication date
EP0021398B1 (en) 1983-07-06
JPS567866A (en) 1981-01-27
IT1149968B (en) 1986-12-10
DE3064026D1 (en) 1983-08-11
JPS572625B2 (en) 1982-01-18
IT8022506A0 (en) 1980-06-03
CA1135734A (en) 1982-11-16
US4252309A (en) 1981-02-24

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