EP2189403A1 - Sheet-treatment device comprising a supply tray and a buffer for blocking the sheets contained in the tray - Google Patents

Sheet-treatment device comprising a supply tray and a buffer for blocking the sheets contained in the tray Download PDF

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Publication number
EP2189403A1
EP2189403A1 EP09290835A EP09290835A EP2189403A1 EP 2189403 A1 EP2189403 A1 EP 2189403A1 EP 09290835 A EP09290835 A EP 09290835A EP 09290835 A EP09290835 A EP 09290835A EP 2189403 A1 EP2189403 A1 EP 2189403A1
Authority
EP
European Patent Office
Prior art keywords
stop
movable
frame
sheets
sheet
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
EP09290835A
Other languages
German (de)
French (fr)
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EP2189403B1 (en
Inventor
Eric Paris
Frédéric Marcq
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.)
Sagemcom Documents SAS
Original Assignee
Sagem Communications SAS
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Publication date
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Publication of EP2189403A1 publication Critical patent/EP2189403A1/en
Application granted granted Critical
Publication of EP2189403B1 publication Critical patent/EP2189403B1/en
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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
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators
    • B65H3/0684—Rollers or like rotary separators on moving support, e.g. pivoting, for bringing the roller or like rotary separator into contact with 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
    • B65H3/00—Separating articles from piles
    • B65H3/34—Article-retaining devices controlling the release of the articles to the separators
    • 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
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/70—Other elements in edge contact with handled material, e.g. registering, orientating, guiding devices
    • B65H2404/72—Stops, gauge pins, e.g. stationary
    • B65H2404/725—Stops, gauge pins, e.g. stationary retractable

Definitions

  • the invention relates to a sheet processing apparatus such as a copier or a scanner, comprising a supply tray or sheet feeder and means for blocking sheets in the tray.
  • the supply tray is designed to receive a sheet to be treated or a stack of sheets to be treated, these sheets being automatically engaged one after the other in a treatment path of the apparatus to be treated successively.
  • the supply pan 2 has a lower inclined wall 3 intended to receive the sheet or sheets to be treated, which is situated upstream of an engagement end 4 of the sheets in the treatment path which is identified by 6.
  • the bottom wall 3 of the bottom of the tank 2 is connected to the end 4 of the path 6 by a wall or rib 12 situated in the front part of the tank 2 and which is inclined relative to the lower wall 3 by an angle greater than 1 'right angle. Thanks to its inclination, the wall 12 does not constitute an obstacle to the front edge of a sheet to be treated engaging path 6, and it guides them to the contrary in the end of this path.
  • the sheet or sheets to be treated are first introduced by the user in the tray 2 to rest on its underside, the mobile frame then being in the up position.
  • the mobile frame is then lowered while the extraction roller rotates, which has the effect of sliding the sheet against which the roller bears, towards the end 4 of the path 6, in a movement where its front edge slides firstly along the wall or rib 12.
  • this sheet is driven by the insertion roller 7 until it is fully engaged in this path 6.
  • the device is equipped with a movable stop 13 having an arm 14 located in front of the tray.
  • the arm 14 When the frame 9 is in the up position, as in the figure 1 , the arm 14 is lowered with its end bearing on a front portion of the bottom wall 3 to constitute an obstacle to the passage of a sheet towards the end 4 of the path 6.
  • the arm 14 occupies a high position so as to allow the passage of a sheet from the tray 2 to the treatment path 6.
  • the abutment 13 pivots about a fixed axis 16 relative to the chassis which is situated above the lower wall 3, and it comprises a second arm 17, extending the first arm 14 beyond the axis. 16. Additionally, the mobile chassis 9 comprises a stud 18 at its free end, and against which the second arm 17 is continuously supported.
  • the lowering of the frame 9 thus causes the raising of the arm 14 and vice versa, the raising of the frame 9 causes the lowering of the arm 14.
  • the object of the invention is to propose a solution to overcome the above disadvantages.
  • the invention relates to a sheet processing apparatus, such as a copier or scanner, comprising a feed tray for receiving sheets to be treated, a leaf processing path, a movable frame carrying an extraction roller that can occupy a high position and be lowered to place the extraction roller bearing on the sheet or sheets to be treated to engage them in one end of the treatment path, and a rotatable stop comprising an arm movable between an open position and a closed position to allow or prohibit the passage to the end of the path leaves from the tray, characterized in that it comprises means for locking the movable stop in closed position when the movable frame is in high position and releasing the mobile stop when the moving frame leaves the position high, in that it comprises return means continuously tending to return the movable stop towards its closed position, and in that when the movable stop is released, the forces exerted on it against the return means a sheet moved from the feed tray to the processing path is sufficient to open it.
  • a sheet processing apparatus such as a copier or scanner
  • the mobile frame As soon as the mobile frame leaves its high position to be lowered, it is in the range of positions, where free travel, in which it releases the stop. It follows that for any height of the stack of sheets to be treated, the sheets can enter the processing path by pushing the locking stop to open, as soon as the mobile frame has left its upper position.
  • the invention also relates to an apparatus as defined above, wherein the means ensuring the locking and the release of the movable stop, release this movable stop for a range of positions of the movable frame which is located between its upper position and a maximum lowering position.
  • the invention also relates to an apparatus as defined above, in which the frame comprises a stud bearing on a key of the movable stop to lock it in the closed position when the mobile frame is in the up position, and in which a recess is provided between the key and the axis of rotation of the movable stop so that the stud does not form an obstacle to the rotation of the movable stop when the movable frame has left its upper position.
  • the invention also relates to an apparatus as defined above, wherein the return means of the stop to its closed position are constituted by an eccentricity of its center of gravity with respect to the axis of rotation of this stop.
  • the invention also relates to an apparatus as defined above, in which the abutment comprises a ramp against which the pad abuts when the mobile frame is lowered beyond the range of positions in which it releases the stop, to provoke a partial opening of the stop when the mobile frame is lowered beyond this range of positions.
  • the apparatus according to the invention which is indicated by 21 in the figures comprises, as visible in FIG. figure 3 , a supply tray 22 delimited by a bottom wall 23 on which a stack 24 of sheets to be treated, and a processing path 26 along which the sheets of the stack 24 to be treated are moved, one after the other.
  • the path 26 has a leaf introduction end 27 located opposite a front end 28 of the supply tray 22 which is lower than the rear end of this tray.
  • the end 27 of the treatment path is connected to the front end 28 of the tray by a rib having an inclined edge 29.
  • the edge 29 is inclined so as not to be an obstacle to the circulation of leaves extracted from the supply tray 22 moved towards the end 27 of the treatment path, which is why this edge is inclined by relative to the lower wall 23 of an angle greater than the right angle.
  • the apparatus also comprises a roll 31 for introducing the sheets into the end 27, rotating about an axis 32 fixed relative to the frame, and mounted in pressing on a spring clamping element 33.
  • the introduction roller 31 and the spring clamping element 33 are located at the insertion end 27.
  • the mobile frame which is represented alone and in perspective in the figure 4 , identified by 34 has two sides 36 and 37 located on either side of the insertion roll 31 and each having a first end 38, 39 rotatably mounted about the fixed axis 32.
  • Each sidewall 36, 37 has a second end 41, 42 to which are fixed the ends of an axis of rotation 43 carrying an extraction roller 44.
  • the extraction roller 44 carried by the end of the mobile frame is thus located above the supply tray 22. It can occupy a high position in which it is spaced from the sheets to be treated, and be lowered to be in support on the stack of leaves to be treated.
  • the apparatus is provided with a movable stop 46, rotatably mounted about an axis 47 passing therethrough while being rigidly secured to a fixed part of the apparatus, such as a part of the frame of this apparatus.
  • This stop 46 comprises a lower arm 48 and an upper arm 49 located on either side of the axis 47 around which it rotates extending substantially in the extension of one another.
  • This abutment 46 is located at the junction between the front end 28 of the tray 22 and the insertion end 27. It can occupy either a closed position in which it extends vertically so that its lower arm 48 constitutes a obstacle to the passage of leaves moved from the tray 22 to the insertion end 27.
  • the stop which is movable between the closed position and the open position can also occupy any intermediate position.
  • the lower arm 48 of this abutment 46 has a generally rectilinear shape, and has a length much greater than that of the upper arm 49, so that the center of gravity of the entire abutment is located at the lower arm 48 The self-weight thus tends to recall the abutment spontaneously to its vertical closed position.
  • the lower arm 48 defines a planar and generally rectangular face 51 constituting an abutment against which abut the front edges of the sheets in the tray 22 to retain them.
  • This lower arm also has a wall 52 extending perpendicular to the face 51 and to the axis 47.
  • the base of this wall 52 runs along a portion of the rectangular contour of the face 51, this portion extending perpendicular to the axis 47 being closest to this axis.
  • the free edge of the wall 52 has a generally curved shape constituting a ramp marked by 53.
  • the upper arm 49 comprises a lever 54 bearing a bearing key 56 oriented parallel to the face 51, but which is spaced from the axis 47 by being separated from it by a lateral recess 57 of the upper arm 49.
  • the flank 36 of the mobile frame 34 carries a stud or lug 58, extending perpendicularly to the lateral face of this flank 36, that is to say parallel to the axis 47.
  • This lug or plot 58 has an end 59 located on the trajectory of the key 56 when the mobile frame 34 is in the upper position, but which descends at the recess 57 to no longer constitute an obstacle to the movable stop 46, when the movable frame 34 is lowered.
  • the stud 58 occupies a high position in which it blocks the movable stop 46 in the closed position by constituting an obstacle situated opposite the key 56.
  • the pad 58 When the mobile frame 34 leaves its high position while being lowered, the pad 58 is itself lowered to be situated at the level of the recess 57, so that it no longer constitutes an obstacle to the displacement of the movable stop 46.
  • the abutment 46 can then freely rotate about its axis over a portion of the travel of the mobile frame 34.
  • This portion of the chassis travel in which the stop is free to rotate which is a range of chassis positions called free travel in the suite, is located between its upper position and its maximum lowering position.
  • the mobile frame 34 is partially lowered, at a height in its free travel, to place the extraction roller bearing on this stack of sheets.
  • the movable stop 46 is then closed, but it is then opened by the advancement of the upper sheet of the pillar. This opening is obtained for a small displacement of the topsheet, the latter being, because of the thickness of the stack of sheets, close to the axis of rotation of the movable stop 46.
  • the lowering of the mobile frame 34 is maximum, placing it in a position beyond the free stroke, to position the extraction roller bearing on the sheets, which opens partially the stop 46.
  • the complete opening is obtained by moving the sheet to be treated.
  • the user places a stack 24 of sheets to be treated in the tray 22, when the mobile frame 34 is in the up position, which corresponds to the situation of the figure 6 .
  • the abutment 46 extends vertically so that its lower arm 48 constitutes an obstacle interposed between the tray 22 and the processing path 26.
  • the movable frame 34 being in the high position, the end 59 of the pad 58 of this movable frame 34 is supported on the key 56 of the upper arm of the abutment 46, so as to keep it locked in the closed position.
  • the mobile chassis 34 is then lowered automatically, while the extraction roller 44 rotates to a position in its free travel where it is supported on the top sheet of the stack 24, so as to extract the upper sheet to move it to the insertion end of the processing path 26.
  • the rotation of the extraction roller causes the top sheet of the stack 24 to move towards the treatment path 26.
  • the edge of this sheet then bears against the arm 48 of the abutment 46, thereby switch to its horizontal open position.
  • this front edge of the sheet bears on the edge 29 to be guided by this edge towards the insertion end of the path 26.
  • the abutment 46 is placed horizontally, in the open position, to allow the passage of the sheet towards the treatment path 26.
  • the movable frame 34 reaches a maximum lowering position when it is lowered to be placed in abutment on these sheets.
  • the stud or lug 58 goes lower than the recess 57, beyond the free stroke to bear on the curved ramp 53 so as to initiate the opening movement of the stop 46.
  • FIG 8 This situation is represented in figure 8 , in which a single sheet marked 61 is loaded in the tray 22 before starting the treatment.
  • the lowering of the movable frame 34 to a maximum lowering position causes the support of the pad 58 on the ramp 53, which generates a partial rotation of the stop 46, placing this stop in an intermediate position between its position completely closed and its position completely open.
  • this stop finds its intermediate position, as in the figure 10 .
  • the mobile frame 34 can then be raised to receive the next stack of sheets to be treated.
  • the pad 58 When raising the complete of the mobile frame 34 to its upper position, which is caused once the last sheet present in the tray 22 has been treated, the pad 58, in its movement relative to the stop 46, is peeled off of the ramp 53. It is then located in the free stroke to allow the abutment 46 to resume its vertical position under the effect of its own weight.
  • the pad 58 reaches its high position to constitute an obstacle to the key 56 thus blocking the movable stop 46 in the closed position.

Abstract

The apparatus (21) has a sheet supply container (22) for receiving sheets (24) to be treated, and a rotatably movable stop (46) with a movable arm (48) between an open position and a closed position. Blocking units block the stop in closed position when a movable frame (34) is in raised position and release the stop when the frame leaves the raised position. A return unit is stretched to return the stop towards a closed position, where forces exerted on the stop against the return unit by the sheet are sufficient to open the stop, when the stop is released.

Description

L'invention concerne un appareil de traitement de feuilles tel qu'un copieur ou un scanner, comportant un bac d'approvisionnement ou chargeur de feuilles et des moyens de blocage des feuilles situées dans le bac.The invention relates to a sheet processing apparatus such as a copier or a scanner, comprising a supply tray or sheet feeder and means for blocking sheets in the tray.

ARRIERE PLAN DE L'INVENTIONBACKGROUND OF THE INVENTION

Dans un tel appareil, le bac d'approvisionnement est prévu pour recevoir une feuille à traiter ou une pile de feuilles à traiter, ces feuilles étant engagées automatiquement les unes après les autres dans un chemin de traitement de l'appareil pour y être traitées successivement.In such an apparatus, the supply tray is designed to receive a sheet to be treated or a stack of sheets to be treated, these sheets being automatically engaged one after the other in a treatment path of the apparatus to be treated successively. .

Dans l'appareil connu de la demande de brevet FR2863601 et représenté aux figures 1 et 2 en y étant repéré par 1, le bac d'approvisionnement 2 comporte une paroi inférieure 3 inclinée destinée à recevoir la ou les feuilles à traiter, qui est situé en amont d'une extrémité d'engagement 4 des feuilles dans le chemin de traitement qui est repéré par 6.In the known apparatus of the patent application FR2863601 and represented to Figures 1 and 2 1, the supply pan 2 has a lower inclined wall 3 intended to receive the sheet or sheets to be treated, which is situated upstream of an engagement end 4 of the sheets in the treatment path which is identified by 6.

Un rouleau d'introduction 7 des feuilles dans le chemin 6, dont l'axe de rotation 8 est fixe par rapport au bâti, est situé au dessus de l'extrémité 4 du chemin 6 pour y faire progresser les feuilles en provenance du bac 2. Un châssis mobile repéré par 9 a l'une de ses extrémités montée rotative sur l'axe de rotation 8, et il porte à son autre extrémité un axe de rotation 10 sur lequel est monté un rouleau d'extraction 11, situé au dessus du bac 2 pour en extraire les feuilles les unes après les autres.An insertion roller 7 of the sheets in the path 6, whose axis of rotation 8 is fixed relative to the frame, is located above the end 4 of the path 6 to advance the sheets from the tray 2 A movable frame marked at 9 at one of its rotatably mounted ends on the axis of rotation 8, and at its other end carries an axis of rotation 10 on which is mounted an extraction roller 11, located above Tray 2 to extract the sheets one after the other.

La paroi inférieure 3 du fond du bac 2 est raccordée à l'extrémité 4 du chemin 6 par une paroi ou nervure 12 située en partie avant du bac 2 et qui est inclinée par rapport à la paroi inférieure 3 d'un angle supérieur à l'angle droit. Grâce à son inclinaison, la paroi 12 ne constitue pas un obstacle au bord avant d'une feuille à traiter s'engageant vers le chemin 6, et elle les guide au contraire dans l'extrémité de ce chemin.The bottom wall 3 of the bottom of the tank 2 is connected to the end 4 of the path 6 by a wall or rib 12 situated in the front part of the tank 2 and which is inclined relative to the lower wall 3 by an angle greater than 1 'right angle. Thanks to its inclination, the wall 12 does not constitute an obstacle to the front edge of a sheet to be treated engaging path 6, and it guides them to the contrary in the end of this path.

En fonctionnement, la ou les feuilles à traiter sont d'abord introduites par l'utilisateur dans le bac 2 pour reposer en appui sur sa face inférieure, le châssis mobile étant alors en position haute.In operation, the sheet or sheets to be treated are first introduced by the user in the tray 2 to rest on its underside, the mobile frame then being in the up position.

Le châssis mobile est ensuite abaissé alors que le rouleau d'extraction tourne, ce qui a pour effet de faire glisser la feuille contre laquelle ce rouleau vient en appui, vers l'extrémité 4 du chemin 6, dans un mouvement où son bord avant glisse dans un premier temps le long de la paroi ou nervure 12.The mobile frame is then lowered while the extraction roller rotates, which has the effect of sliding the sheet against which the roller bears, towards the end 4 of the path 6, in a movement where its front edge slides firstly along the wall or rib 12.

Lorsque le bord avant de la feuille a atteint l'extrémité 4 du chemin 6, cette feuille est entraînée par le rouleau d'introduction 7 jusqu'à être intégralement engagée dans ce chemin 6.When the front edge of the sheet has reached the end 4 of the path 6, this sheet is driven by the insertion roller 7 until it is fully engaged in this path 6.

Dans un tel dispositif, il est important que les feuilles soient placées toujours de la même façon dans le bac, de manière à réduire les risques de bourrage. A cet effet, le dispositif est équipé d'une butée mobile 13 ayant un bras 14 situé en partie avant du bac.In such a device, it is important that the sheets are always placed in the same way in the tray, so as to reduce the risk of jamming. For this purpose, the device is equipped with a movable stop 13 having an arm 14 located in front of the tray.

Lorsque le châssis 9 est en position haute, comme dans la figure 1, le bras 14 est abaissé en ayant son extrémité en appui sur une partie avant de la paroi inférieure 3 pour constituer un obstacle au passage d'une feuille vers l'extrémité 4 du chemin 6.When the frame 9 is in the up position, as in the figure 1 , the arm 14 is lowered with its end bearing on a front portion of the bottom wall 3 to constitute an obstacle to the passage of a sheet towards the end 4 of the path 6.

Lorsque le châssis 9 est abaissé, comme dans la figure 2, le bras 14 occupe une position haute de manière à permettre le passage d'une feuille depuis le bac 2 vers le chemin de traitement 6.When the chassis 9 is lowered, as in the figure 2 , the arm 14 occupies a high position so as to allow the passage of a sheet from the tray 2 to the treatment path 6.

Comme visible dans les figures, la butée 13 pivote autour d'un axe 16 fixe par rapport châssis qui est situé au dessus de la paroi inférieure 3, et elle comporte un second bras 17, prolongeant le premier bras 14 au delà de l'axe 16. Complémentairement, le châssis mobile 9 comprend un plot 18 situé à son extrémité libre, et contre lequel le second bras 17 est continûment en appui.As shown in the figures, the abutment 13 pivots about a fixed axis 16 relative to the chassis which is situated above the lower wall 3, and it comprises a second arm 17, extending the first arm 14 beyond the axis. 16. Additionally, the mobile chassis 9 comprises a stud 18 at its free end, and against which the second arm 17 is continuously supported.

L'abaissement du châssis 9 provoque ainsi le relèvement du bras 14 et réciproquement, le relèvement du châssis 9 provoque l'abaissement du bras 14.The lowering of the frame 9 thus causes the raising of the arm 14 and vice versa, the raising of the frame 9 causes the lowering of the arm 14.

En pratique, il s'avère que si la pile de feuilles a une épaisseur trop importante, l'abaissement du châssis n'est pas forcément suffisant pour lever le bras 14. Le traitement des feuilles ne peut être opéré du fait que ces feuilles restent bloquées dans le bac d'approvisionnement malgré l'abaissement du châssis mobile. L'utilisateur doit alors extraire la pile et la diviser en plusieurs parties à faire traiter les unes après les autres par l'appareil.In practice, it turns out that if the stack of sheets is too thick, the lowering of the frame is not necessarily sufficient to lift the arm 14. The treatment leaves can not be operated because these leaves remain blocked in the supply bin despite the lowering of the mobile chassis. The user must then extract the battery and divide it into several parts to be processed one after the other by the device.

OBJET DE L'INVENTIONOBJECT OF THE INVENTION

Le but de l'invention est de proposer une solution pour remédier aux inconvénients ci-dessus.The object of the invention is to propose a solution to overcome the above disadvantages.

RESUME DE L'INVENTIONSUMMARY OF THE INVENTION

A cet effet, l'invention a pour objet un appareil de traitement de feuilles, tel qu'un copieur ou un scanner, comprenant un bac d'alimentation destiné à recevoir des feuilles à traiter, un chemin de traitement des feuilles, un châssis mobile portant un rouleau d'extraction pouvant occuper une position haute et être abaissé pour placer le rouleau d'extraction en appui sur la ou les feuilles à traiter pour les engager dans une extrémité du chemin de traitement, et une butée mobile en rotation comportant un bras mobile entre une position ouverte et une position fermée pour autoriser ou interdire le passage vers l'extrémité du chemin de feuilles provenant du bac, caractérisé en ce qu'il comprend des moyens pour bloquer la butée mobile en position fermée lorsque le châssis mobile est en position haute et libérant la butée mobile lorsque le châssis mobile quitte la position haute, en ce qu'il comprend des moyens de rappel tendant continûment à ramener la butée mobile vers sa position fermée, et en ce que lorsque la butée mobile est libérée, les efforts exercés sur celle-ci à l'encontre des moyens de rappel par une feuille déplacée depuis le bac d'alimentation vers le chemin de traitement sont suffisants pour provoquer son ouverture.For this purpose, the invention relates to a sheet processing apparatus, such as a copier or scanner, comprising a feed tray for receiving sheets to be treated, a leaf processing path, a movable frame carrying an extraction roller that can occupy a high position and be lowered to place the extraction roller bearing on the sheet or sheets to be treated to engage them in one end of the treatment path, and a rotatable stop comprising an arm movable between an open position and a closed position to allow or prohibit the passage to the end of the path leaves from the tray, characterized in that it comprises means for locking the movable stop in closed position when the movable frame is in high position and releasing the mobile stop when the moving frame leaves the position high, in that it comprises return means continuously tending to return the movable stop towards its closed position, and in that when the movable stop is released, the forces exerted on it against the return means a sheet moved from the feed tray to the processing path is sufficient to open it.

Avec cette solution, dès que le châssis mobile quitte sa position haute pour être abaissé, il est dans la plage de positions, où course libre, dans laquelle il libère la butée. Il s'ensuit que pour toute hauteur de la pile de feuilles à traiter, les feuilles peuvent entrer dans le chemin de traitement en poussant la butée de blocage pour l'ouvrir, dès que le châssis mobile a quitté sa position haute.With this solution, as soon as the mobile frame leaves its high position to be lowered, it is in the range of positions, where free travel, in which it releases the stop. It follows that for any height of the stack of sheets to be treated, the sheets can enter the processing path by pushing the locking stop to open, as soon as the mobile frame has left its upper position.

L'invention concerne également un appareil tel que défini ci-dessus, dans lequel les moyens assurant le blocage et la libération de la butée mobile, libèrent cette butée mobile pour toute une plage de positions du châssis mobile qui est située entre sa position haute et une position d'abaissement maximal.The invention also relates to an apparatus as defined above, wherein the means ensuring the locking and the release of the movable stop, release this movable stop for a range of positions of the movable frame which is located between its upper position and a maximum lowering position.

L'invention concerne également un appareil tel que défini ci-dessus, dans lequel le châssis comporte un plot venant en appui sur une touche de la butée mobile pour la bloquer en position fermée lorsque le châssis mobile est en position haute, et dans lequel un évidement est prévu entre la touche et l'axe de rotation de la butée mobile pour que le plot ne forme pas d'obstacle à la rotation de la butée mobile lorsque le châssis mobile a quitté sa position haute.The invention also relates to an apparatus as defined above, in which the frame comprises a stud bearing on a key of the movable stop to lock it in the closed position when the mobile frame is in the up position, and in which a recess is provided between the key and the axis of rotation of the movable stop so that the stud does not form an obstacle to the rotation of the movable stop when the movable frame has left its upper position.

L'invention concerne également un appareil tel que défini ci-dessus, dans lequel les moyens de rappel de la butée vers sa position fermée sont constitués par une excentration de son centre de gravité par rapport à l'axe de rotation de cette butée.The invention also relates to an apparatus as defined above, wherein the return means of the stop to its closed position are constituted by an eccentricity of its center of gravity with respect to the axis of rotation of this stop.

L'invention concerne également un appareil tel que défini ci-dessus, dans lequel la butée comporte une rampe contre laquelle vient en appui le plot lorsque le châssis mobile est abaissé au delà de la plage de positions dans laquelle il libère la butée, pour provoquer une ouverture partielle de la butée lorsque le châssis mobile est abaissé au delà de cette plage de positions.The invention also relates to an apparatus as defined above, in which the abutment comprises a ramp against which the pad abuts when the mobile frame is lowered beyond the range of positions in which it releases the stop, to provoke a partial opening of the stop when the mobile frame is lowered beyond this range of positions.

BREVE DESCRIPTION DES FIGURESBRIEF DESCRIPTION OF THE FIGURES

  • La figure 1 déjà décrite est une vue partielle latérale d'un appareil connu lorsque son châssis mobile est en position haute ;The figure 1 already described is a partial side view of a known apparatus when its mobile frame is in the high position;
  • La figure 2 déjà décrite est une vue partielle latérale d'un appareil connu lorsque son châssis mobile occupe une position d'abaissement maximale ;The figure 2 already described is a partial side view of a known apparatus when its mobile frame occupies a position of maximum lowering;
  • La figure 3 est une vue schématique latérale en coupe de l'appareil selon l'invention ;The figure 3 is a schematic side sectional view of the apparatus according to the invention;
  • La figure 4 est une vue en perspective du châssis mobile de l'appareil selon l'invention ;The figure 4 is a perspective view of the mobile frame of the apparatus according to the invention;
  • La figure 5 est une vue en perspective de la butée mobile de l'appareil selon l'invention ;The figure 5 is a perspective view of the movable stop of the apparatus according to the invention;
  • La figure 6 est une vue latérale en coupe partielle de l'appareil selon l'invention avant engagement d'une feuille à traiter et montrant le châssis en position haute et la butée en position verticale de blocage ;The figure 6 is a partial sectional side view of the apparatus according to the invention before engagement of a sheet to be treated and showing the frame in the up position and the stop in vertical locking position;
  • La figure 7 est une vue latérale en coupe partielle de l'appareil selon l'invention en début d'engagement d'une feuille à traiter et montrant le châssis de chargement abaissé et la butée en position verticale de blocage ;The figure 7 is a partial sectional side view of the apparatus according to the invention at the beginning of engagement of a sheet to be treated and showing the lowered loading frame and the stop in vertical locking position;
  • La figure 8 est une vue latérale en coupe partielle de l'appareil selon l'invention lorsque la feuille s'engageant dans le chemin de traitement déplace la butée pour l'écarter de sa position de blocage ;The figure 8 is a partial sectional side view of the apparatus according to the invention when the sheet engaging in the treatment path moves the stop to move it away from its blocking position;
  • La figure 9 est une vue latérale en coupe partielle de l'appareil selon l'invention lorsque la feuille engagée dans le chemin de traitement a repoussé la butée jusque dans une position horizontale de passage ;The figure 9 is a partial sectional side view of the apparatus according to the invention when the sheet engaged in the treatment path has pushed the stop in a horizontal position of passage;
  • La figure 10 est une vue latérale en coupe partielle de l'appareil selon l'invention montrant le retour de la butée en position de blocage après engagement de la totalité de la feuille à traiter dans le chemin de traitement ;The figure 10 is a partial sectional side view of the apparatus according to the invention showing the return of the stop in blocking position after engagement of the entire sheet to be treated in the treatment path;
  • La figure 11 est une vue latérale en coupe partielle de l'appareil selon l'invention montrant le retour du châssis de chargement vers sa position haute après engagement de la totalité de la feuille à traiter dans le chemin de traitement.The figure 11 is a partial sectional side view of the apparatus according to the invention showing the return of the loading frame to its upper position after engagement of the entire sheet to be treated in the treatment path.
DESCRIPTION DETAILLEE DE L'INVENTIONDETAILED DESCRIPTION OF THE INVENTION

L'appareil selon l'invention qui est repéré par 21 dans les figures comporte, comme visible dans la figure 3, un bac d'approvisionnement 22 délimité par une paroi inférieure 23 sur laquelle repose une pile 24 de feuilles à traiter, et un chemin de traitement 26 le long duquel les feuilles de la pile 24 à traiter sont déplacées, les unes après les autres.The apparatus according to the invention which is indicated by 21 in the figures comprises, as visible in FIG. figure 3 , a supply tray 22 delimited by a bottom wall 23 on which a stack 24 of sheets to be treated, and a processing path 26 along which the sheets of the stack 24 to be treated are moved, one after the other.

Le chemin 26 comporte une extrémité 27 d'introduction des feuilles située en vis-à-vis d'une extrémité avant 28 du bac d'approvisionnement 22 qui est plus basse que l'extrémité arrière de ce bac. L'extrémité 27 du chemin de traitement est raccordée à l'extrémité avant 28 du bac par une nervure présentant un bord incliné 29.The path 26 has a leaf introduction end 27 located opposite a front end 28 of the supply tray 22 which is lower than the rear end of this tray. The end 27 of the treatment path is connected to the front end 28 of the tray by a rib having an inclined edge 29.

Le bord 29 est incliné de manière à ne pas constituer un obstacle à la circulation de feuilles extraites du bac d'approvisionnement 22 déplacées en direction de l'extrémité 27 du chemin de traitement, c'est la raison pour laquelle ce bord est incliné par rapport au à la paroi inférieure 23 d'un angle supérieur à l'angle droit.The edge 29 is inclined so as not to be an obstacle to the circulation of leaves extracted from the supply tray 22 moved towards the end 27 of the treatment path, which is why this edge is inclined by relative to the lower wall 23 of an angle greater than the right angle.

L'appareil comporte également un rouleau 31 d'introduction des feuilles dans l'extrémité 27, tournant autour d'un axe 32 fixe par rapport au châssis, et monté en appui sur un élément de serrage à ressort 33. Le rouleau d'introduction 31 et l'élément de serrage à ressort 33 sont situés au niveau de l'extrémité d'introduction 27.The apparatus also comprises a roll 31 for introducing the sheets into the end 27, rotating about an axis 32 fixed relative to the frame, and mounted in pressing on a spring clamping element 33. The introduction roller 31 and the spring clamping element 33 are located at the insertion end 27.

Le châssis mobile, qui est représenté seul et en perspective dans la figure 4, en y étant repéré par 34 comporte deux flancs 36 et 37 situés de part et d'autre du rouleau d'introduction 31 et ayant chacun une première extrémité 38, 39 montée rotative autour de l'axe fixe 32.The mobile frame, which is represented alone and in perspective in the figure 4 , identified by 34 has two sides 36 and 37 located on either side of the insertion roll 31 and each having a first end 38, 39 rotatably mounted about the fixed axis 32.

Chaque flanc 36, 37 présente une seconde extrémité 41, 42 à laquelle sont fixées les extrémités d'un axe de rotation 43 portant un rouleau d'extraction 44. Comme représenté en figure 3, le rouleau d'extraction 44 porté par l'extrémité du châssis mobile est ainsi situé au dessus du bac d'approvisionnement 22. Il peut occuper une position haute dans laquelle il est espacé des feuilles à traiter, et être abaissé pour être en appui sur la pile de feuilles à traiter.Each sidewall 36, 37 has a second end 41, 42 to which are fixed the ends of an axis of rotation 43 carrying an extraction roller 44. As shown in FIG. figure 3 , the extraction roller 44 carried by the end of the mobile frame is thus located above the supply tray 22. It can occupy a high position in which it is spaced from the sheets to be treated, and be lowered to be in support on the stack of leaves to be treated.

L'appareil est pourvu d'une butée mobile 46, montée rotative autour d'un axe 47 la traversant tout en étant rigidement solidarisé à une partie fixe de l'appareil, telle qu'une partie du châssis de cet appareil. Cette butée 46 comporte un bras inférieur 48 et un bras supérieur 49 situés de part et d'autre de l'axe 47 autour duquel elle tourne en s'étendant sensiblement dans le prolongement l'un de l'autre.The apparatus is provided with a movable stop 46, rotatably mounted about an axis 47 passing therethrough while being rigidly secured to a fixed part of the apparatus, such as a part of the frame of this apparatus. This stop 46 comprises a lower arm 48 and an upper arm 49 located on either side of the axis 47 around which it rotates extending substantially in the extension of one another.

Cette butée 46 est située au niveau de la jonction entre l'extrémité avant 28 du bac 22 et l'extrémité d'introduction 27. Elle peut occuper soit une position fermée dans laquelle elle s'étend verticalement pour que son bras inférieur 48 constitue un obstacle au passage de feuilles déplacées depuis le bac 22 vers l'extrémité d'introduction 27.This abutment 46 is located at the junction between the front end 28 of the tray 22 and the insertion end 27. It can occupy either a closed position in which it extends vertically so that its lower arm 48 constitutes a obstacle to the passage of leaves moved from the tray 22 to the insertion end 27.

Elle peut également occuper une position ouverte ou effacée dans laquelle elle s'étend horizontalement pour laisser dégagée la jonction entre partie avant du bac 28 et extrémité d'introduction 27 de manière à permettre le passage de feuilles depuis le bac 22 vers l'extrémité d'introduction 27. Comme visible dans les différentes figures, la butée qui est mobile entre la position fermée et la position ouverte peut également occuper toute position intermédiaire.It can also occupy an open or erased position in which it extends horizontally to leave clear the junction between the front part of the tray 28 and insertion end 27 so as to allow the passage of sheets from the tray 22 to the insertion end 27. As visible in the various figures, the stop which is movable between the closed position and the open position can also occupy any intermediate position.

Comme visible en figure 5, le bras inférieur 48 de cette butée 46 a une forme généralement rectiligne, et présente une longueur très supérieure à celle du bras supérieur 49, pour que le centre de gravité de l'ensemble de la butée soit situé au niveau de ce bras inférieur 48. Le poids propre tend ainsi à rappeler la butée spontanément vers sa position fermée verticale.As visible in figure 5 , the lower arm 48 of this abutment 46 has a generally rectilinear shape, and has a length much greater than that of the upper arm 49, so that the center of gravity of the entire abutment is located at the lower arm 48 The self-weight thus tends to recall the abutment spontaneously to its vertical closed position.

Le bras inférieur 48 délimite une face plane et généralement rectangulaire 51 constituant une butée contre laquelle viennent en appui les bords avant des feuilles situées dans le bac 22 afin de les retenir. Ce bras inférieur comporte également une paroi 52 s'étendant perpendiculairement à la face 51 et à l'axe 47.The lower arm 48 defines a planar and generally rectangular face 51 constituting an abutment against which abut the front edges of the sheets in the tray 22 to retain them. This lower arm also has a wall 52 extending perpendicular to the face 51 and to the axis 47.

La base de cette paroi 52 longe une portion du contour rectangulaire de la face 51, cette portion s'étendant perpendiculairement à l'axe 47 en étant la plus proche de cet axe. Le bord libre de la paroi 52 a une forme généralement courbe constituant une rampe repérée par 53.The base of this wall 52 runs along a portion of the rectangular contour of the face 51, this portion extending perpendicular to the axis 47 being closest to this axis. The free edge of the wall 52 has a generally curved shape constituting a ramp marked by 53.

Le bras supérieur 49 comprend un levier 54 portant une touche d'appui 56 orientée parallèlement à la face 51, mais qui est espacée de l'axe 47 en étant séparée de celui-ci par un évidement latéral 57 du bras supérieur 49.The upper arm 49 comprises a lever 54 bearing a bearing key 56 oriented parallel to the face 51, but which is spaced from the axis 47 by being separated from it by a lateral recess 57 of the upper arm 49.

Complémentairement à la touche 56, le flanc 36 du châssis mobile 34 porte un plot ou ergot 58, s'étendant perpendiculairement à la face latérale de ce flanc 36, c'est-à-dire parallèlement à l'axe 47. Cet ergot ou plot 58 présente une extrémité 59 située sur la trajectoire de la touche 56 lorsque le châssis mobile 34 est en position haute, mais qui descend au niveau de l'évidement 57 pour ne plus constituer un obstacle à la butée mobile 46, lorsque le châssis mobile 34 est abaissé.Complementarily to the key 56, the flank 36 of the mobile frame 34 carries a stud or lug 58, extending perpendicularly to the lateral face of this flank 36, that is to say parallel to the axis 47. This lug or plot 58 has an end 59 located on the trajectory of the key 56 when the mobile frame 34 is in the upper position, but which descends at the recess 57 to no longer constitute an obstacle to the movable stop 46, when the movable frame 34 is lowered.

Ainsi, lorsque le châssis mobile est en position haute, le plot 58 occupe une position haute dans laquelle il bloque la butée mobile 46 en position fermée en constituant un obstacle situé en vis-à-vis de la touche 56.Thus, when the mobile frame is in the high position, the stud 58 occupies a high position in which it blocks the movable stop 46 in the closed position by constituting an obstacle situated opposite the key 56.

Lorsque le châssis mobile 34 quitte sa position haute en étant abaissé, le plot 58 est lui-même abaissé pour être situé au niveau de l'évidement 57, de sorte qu'il ne constitue plus un obstacle au déplacement de la butée mobile 46. La butée 46 peut alors librement tourner autour de son axe, sur toute une portion de la course du châssis mobile 34.When the mobile frame 34 leaves its high position while being lowered, the pad 58 is itself lowered to be situated at the level of the recess 57, so that it no longer constitutes an obstacle to the displacement of the movable stop 46. The abutment 46 can then freely rotate about its axis over a portion of the travel of the mobile frame 34.

Cette portion de la course du châssis dans laquelle la butée est libre de pivoter, qui est une plage de positions du châssis appelée course libre dans la suite, est située entre sa position haute et sa position d'abaissement maximale.This portion of the chassis travel in which the stop is free to rotate, which is a range of chassis positions called free travel in the suite, is located between its upper position and its maximum lowering position.

Lorsque le châssis mobile 34 est abaissé au delà de la course libre par exemple lorsqu'une seule feuille est présente dans le bac 22, le plot 58 vient en appui sur la rampe 53, éloignant par là même la butée de sa position fermée verticale.When the mobile frame 34 is lowered beyond the free travel for example when a single sheet is present in the tray 22, the pad 58 bears on the ramp 53, thereby moving the stop from its closed vertical position.

Ainsi, lorsqu'une pile de feuilles doit être traitée, le châssis mobile 34 est abaissé partiellement, à une hauteur située dans sa course libre, pour placer le rouleau d'extraction en appui sur cette pile de feuilles. La butée mobile 46 est alors fermée, mais elle est ensuite ouverte par l'avancement de la feuille supérieure de la pille. Cette ouverture est obtenue pour un faible déplacement de la feuille supérieure, celle-ci étant, du fait de l'épaisseur de la pile de feuilles, proche de l'axe de rotation de la butée mobile 46.Thus, when a stack of sheets is to be processed, the mobile frame 34 is partially lowered, at a height in its free travel, to place the extraction roller bearing on this stack of sheets. The movable stop 46 is then closed, but it is then opened by the advancement of the upper sheet of the pillar. This opening is obtained for a small displacement of the topsheet, the latter being, because of the thickness of the stack of sheets, close to the axis of rotation of the movable stop 46.

Lorsqu'un faible nombre de feuilles doit être traité, l'abaissement du châssis mobile 34 est maximal, le plaçant dans une position située au delà de la course libre, pour positionner le rouleau d'extraction en appui sur les feuilles, ce qui ouvre partiellement la butée 46. L'ouverture complète est obtenue par le déplacement de la feuille à traiter.When a small number of sheets is to be processed, the lowering of the mobile frame 34 is maximum, placing it in a position beyond the free stroke, to position the extraction roller bearing on the sheets, which opens partially the stop 46. The complete opening is obtained by moving the sheet to be treated.

De manière analogue, lorsqu'une opération de maintenance est effectuée, l'ensemble du capot 60 est relevé, ce capot portant le châssis mobile 34 par son axe 32 ainsi que la butée mobile 48 par son axe 47.Similarly, when a maintenance operation is performed, the entire cover 60 is raised, this cover carrying the movable frame 34 by its axis 32 and the movable stop 48 by its axis 47.

Ce déplacement du capot 60 fait remonter l'axe 32, provoquant par là même une inclinaison significative du châssis mobile 34 dont le rouleau d'extraction 44 reste en appui sur les feuilles ou le fond du bac 22 sous l'effet de son poids propre.This displacement of the cover 60 causes the axis 32 to rise, thereby causing a significant inclination of the mobile frame 34, the extraction roller 44 remains resting on the sheets or the bottom of the tray 22 under the effect of its own weight. .

Dans cette situation, l'extrémité 59 de l'ergot 58 vient en appui sur la rampe 53 pour ouvrir partiellement la butée mobile 48. La butée mobile 48 est ainsi dans une position oblique évitant que son extrémité ne perfore des feuilles présentes dans le bac 22 lorsque le capot 60 est rabaissé.In this situation, the end 59 of the lug 58 bears on the ramp 53 to partially open the movable stop 48. The movable stop 48 is thus in an oblique position avoiding that its end does not perforate sheets present in the tray 22 when the cover 60 is lowered.

En fonctionnement, l'utilisateur place une pile 24 de feuilles à traiter dans le bac 22, lorsque le châssis mobile 34 est en position haute, ce qui correspond à la situation de la figure 6. Dans cette situation, la butée 46 s'étend verticalement pour que son bras inférieur 48 constitue un obstacle interposé entre le bac 22 et le chemin de traitement 26. Le châssis mobile 34 étant en position haute, l'extrémité 59 du plot 58 de ce châssis mobile 34 est en appui sur la touche 56 du bras supérieur de la butée 46, de manière à la maintenir bloquée en position fermée.In operation, the user places a stack 24 of sheets to be treated in the tray 22, when the mobile frame 34 is in the up position, which corresponds to the situation of the figure 6 . In this situation, the abutment 46 extends vertically so that its lower arm 48 constitutes an obstacle interposed between the tray 22 and the processing path 26. The movable frame 34 being in the high position, the end 59 of the pad 58 of this movable frame 34 is supported on the key 56 of the upper arm of the abutment 46, so as to keep it locked in the closed position.

L'utilisateur actionne alors une touche pour provoquer le traitement des feuilles. Le châssis mobile 34 est alors abaissé automatiquement, alors que le rouleau d'extraction 44 tourne, jusqu'à une position située dans sa course libre où il est en appui sur la feuille supérieure de la pile 24, de manière à extraire cette feuille supérieure pour la déplacer vers l'extrémité d'introduction du chemin de traitement 26.The user then activates a key to cause the processing of the sheets. The mobile chassis 34 is then lowered automatically, while the extraction roller 44 rotates to a position in its free travel where it is supported on the top sheet of the stack 24, so as to extract the upper sheet to move it to the insertion end of the processing path 26.

Lorsque le châssis mobile 34 est abaissé, l'extrémité 59 se dégage de la touche 56, pour se trouver sensiblement au niveau de l'évidement 57, dans la course libre, libérant ainsi la butée 46, qui reste positionnée verticalement sous l'effet de son poids propre.When the movable frame 34 is lowered, the end 59 disengages from the key 56, to be substantially at the recess 57, in the free stroke, thus releasing the stop 46, which remains positioned vertically under the effect of its own weight.

A ce stade, la rotation du rouleau d'extraction provoque un déplacement de la feuille supérieure de la pile 24 en direction du chemin de traitement 26. Le bord de cette feuille vient alors en appui sur le bras 48 de la butée 46, la faisant basculer vers sa position ouverte horizontale. Puis ce bord avant de la feuille vient en appui sur le bord 29 pour être guidé par ce bord vers l'extrémité d'introduction du chemin 26.At this stage, the rotation of the extraction roller causes the top sheet of the stack 24 to move towards the treatment path 26. The edge of this sheet then bears against the arm 48 of the abutment 46, thereby switch to its horizontal open position. Then this front edge of the sheet bears on the edge 29 to be guided by this edge towards the insertion end of the path 26.

Sous l'effet du mouvement de la feuille déplacée par le rouleau d'extraction 44, la butée 46 se place horizontalement, en position ouverte, pour permettre le passage de la feuille vers le chemin de traitement 26.Under the effect of the movement of the sheet displaced by the extraction roller 44, the abutment 46 is placed horizontally, in the open position, to allow the passage of the sheet towards the treatment path 26.

Dans le cas où le bac 22 contient un faible nombre de feuille significativement inférieur au nombre de feuilles contenues dans la pile 24, le châssis mobile 34 atteint une position d'abaissement maximale lorsqu'il est rabaissé pour être placé en appui sur ces feuilles. Dans ce cas, le plot ou ergot 58 descend plus bas que l'évidement 57, au delà de la course libre pour venir en appui sur la rampe courbe 53 de manière à amorcer le mouvement d'ouverture de la butée 46.In the case where the tray 22 contains a small number of sheets significantly less than the number of sheets contained in the stack 24, the movable frame 34 reaches a maximum lowering position when it is lowered to be placed in abutment on these sheets. In this case, the stud or lug 58 goes lower than the recess 57, beyond the free stroke to bear on the curved ramp 53 so as to initiate the opening movement of the stop 46.

Cette situation est représentée en figure 8, dans laquelle une seule feuille, repérée par 61 est chargée dans le bac 22 avant d'enclencher le traitement. Comme visible sur la figure 8, l'abaissement du châssis mobile 34 jusqu'à une position d'abaissement maximal provoque l'appui du plot 58 sur la rampe 53, ce qui génère une rotation partielle de la butée 46, plaçant cette butée dans une position intermédiaire entre sa position complètement fermée et sa position complètement ouverte.This situation is represented in figure 8 , in which a single sheet marked 61 is loaded in the tray 22 before starting the treatment. As visible on the figure 8 , the lowering of the movable frame 34 to a maximum lowering position causes the support of the pad 58 on the ramp 53, which generates a partial rotation of the stop 46, placing this stop in an intermediate position between its position completely closed and its position completely open.

La rotation du rouleau d'extraction 44 déplace alors la feuille 61 vers le chemin de traitement 26, et le bord avant de cette feuille 61 vient alors en appui contre le bras 48 de la butée 46, pour la faire tourner jusqu'à sa position ouverte horizontale, ce qui correspond à la figure 9.The rotation of the extraction roller 44 then moves the sheet 61 towards the treatment path 26, and the leading edge of this sheet 61 then bears against the arm 48 of the abutment 46, to turn it to its position horizontally open, which corresponds to the figure 9 .

Une fois que le bord arrière de la feuille est passé au delà du bras inférieur 48 de la butée 46, cette butée retrouve sa position intermédiaire, comme dans la figure 10. Le châssis mobile 34 peut alors être relevé pour recevoir la prochaine pile de feuilles à traiter.Once the rear edge of the sheet has passed beyond the lower arm 48 of the abutment 46, this stop finds its intermediate position, as in the figure 10 . The mobile frame 34 can then be raised to receive the next stack of sheets to be treated.

Lors du relèvement du complet du châssis mobile 34 jusqu'à sa position haute, qui est provoqué une fois que la dernière feuille présente dans le bac 22 a été traitée, le plot 58, dans son déplacement par rapport à la butée 46, se décolle de la rampe 53. Il est alors situé dans la course libre pour permettre à la butée 46 de reprendre sa position verticale sous l'effet de son poids propre.When raising the complete of the mobile frame 34 to its upper position, which is caused once the last sheet present in the tray 22 has been treated, the pad 58, in its movement relative to the stop 46, is peeled off of the ramp 53. It is then located in the free stroke to allow the abutment 46 to resume its vertical position under the effect of its own weight.

Lorsque le châssis mobile 34 continue d'être relevé, le plot 58 atteint sa position haute pour constituer un obstacle à la touche 56 bloquant ainsi la butée mobile 46 en position fermée.When the mobile frame 34 continues to be raised, the pad 58 reaches its high position to constitute an obstacle to the key 56 thus blocking the movable stop 46 in the closed position.

Claims (4)

Appareil (21) de traitement de feuilles, tel qu'un copieur ou un scanner, comprenant un bac d'alimentation (22) destiné à recevoir des feuilles à traiter (24, 61), un chemin de traitement (26) des feuilles, un châssis mobile (34) portant un rouleau d'extraction (44) pouvant occuper une position haute et être abaissé pour placer le rouleau d'extraction (44) en appui sur la ou les feuilles à traiter (24, 61) pour les engager dans une extrémité (27) du chemin de traitement (26), et une butée (46) mobile en rotation comportant un bras mobile (48) entre une position ouverte et une position fermée pour autoriser ou interdire le passage vers l'extrémité (27) du chemin (26) de feuilles (24, 61) provenant du bac (22), caractérisé en ce qu'il comprend des moyens (58, 56) bloquant la butée mobile (46) en position fermée lorsque le châssis mobile (34) est en position haute et libérant la butée mobile (46) lorsque le châssis mobile (34) quitte la position haute, en ce qu'il comprend des moyens de rappel tendant continûment à ramener la butée mobile (46) vers sa position fermée, et en ce que lorsque la butée mobile (46) est libérée, les efforts exercés sur celle-ci à l'encontre des moyens de rappel par une feuille déplacée depuis le bac d'alimentation (22) vers le chemin de traitement sont suffisants pour provoquer son ouverture.An apparatus (21) for processing sheets, such as a copier or scanner, comprising a feed tray (22) for receiving sheets to be treated (24, 61), a treatment path (26) for the sheets, a movable frame (34) carrying an extraction roller (44) which can occupy a high position and be lowered to place the extraction roller (44) bearing on the sheet (s) to be treated (24, 61) to engage them in one end (27) of the treatment path (26), and a rotatable stop (46) having a movable arm (48) between an open position and a closed position to allow or prohibit passage to the end (27). ) of the path (26) of sheets (24, 61) coming from the tray (22), characterized in that it comprises means (58, 56) blocking the mobile stop (46) in the closed position when the mobile frame (34) ) is in the up position and releasing the movable stop (46) when the movable frame (34) leaves the up position, in that it c includes return means continuously tending to return the movable stop (46) to its closed position, and that when the movable stop (46) is released, the forces exerted on it against the return means by a sheet moved from the feed tray (22) to the processing path is sufficient to open it. Appareil selon la revendication 1, dans lequel les moyens assurant le blocage et la libération de la butée mobile (46), libèrent cette butée mobile (46) pour toute une plage de positions du châssis mobile (34) qui est située entre sa position haute et une position d'abaissement maximal.An apparatus according to claim 1, wherein the means for locking and releasing the movable stop (46) releases said movable stop (46) for a range of positions of the movable frame (34) which is located between its up position and a maximum lowering position. Appareil selon la revendication 1 ou 2, dans lequel le châssis comporte un plot (58) venant en appui sur une touche (56) de la butée mobile (46) pour la bloquer en position fermée lorsque le châssis mobile (34) est en position haute, et dans lequel un évidement (57) est prévu entre la touche (56) et l'axe de rotation (47) de la butée mobile (46) pour que le plot (58) ne forme pas d'obstacle à la rotation de la butée mobile (46) lorsque le châssis mobile (34) a quitté sa position haute.Apparatus according to claim 1 or 2, wherein the frame comprises a stud (58) bearing on a key (56) of the movable stop (46) to lock it in the closed position when the mobile frame (34) is in the up position, and in which a recess (57) is provided between the key (56) and the axis of rotation (47) of the movable stop (46) so that the stud (58) does not form an obstacle to the rotation of the movable stop (46) when the movable frame (34) has left its upper position. Appareil selon l'une des revendications 1 à 3, dans lequel les moyens de rappel de la butée vers sa position fermée sont constitués par une excentration de son centre de gravité par rapport à l'axe de rotation de cette butée (46) .Apparatus according to one of claims 1 to 3, wherein the return means of the stop to its closed position are constituted by an eccentric center of gravity with respect to the axis of rotation of this stop (46).
EP09290835.9A 2008-11-21 2009-11-03 Sheet-treatment device comprising a supply tray and a stop for blocking the sheets contained in the tray Not-in-force EP2189403B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0806530A FR2938831B1 (en) 2008-11-21 2008-11-21 SHEET PROCESSING APPARATUS COMPRISING A SUPPLY BIN AND A SHEET LOCKING FASTER PRESENTED IN THE BIN

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EP2189403A1 true EP2189403A1 (en) 2010-05-26
EP2189403B1 EP2189403B1 (en) 2013-09-04

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EP (1) EP2189403B1 (en)
FR (1) FR2938831B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104249942A (en) * 2013-06-26 2014-12-31 东友科技股份有限公司 Paper stopping mechanism with guiding element and automatic paper feed device adapted by same
CN104249943A (en) * 2013-06-26 2014-12-31 东友科技股份有限公司 Paper stopping mechanism with rotating element and automatic paper feed device adapted by same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61248829A (en) * 1985-04-26 1986-11-06 Mita Ind Co Ltd Automatic paper feeder with positioning stopper
US20020033572A1 (en) * 2000-09-21 2002-03-21 Matsushita Graphic Communication Systems, Inc. Paper feeder
US20020074711A1 (en) * 2000-12-19 2002-06-20 Akiharu Higaki Sheet sorting apparatus and automatic document feeder apparatus including the same
FR2863601A1 (en) 2003-12-15 2005-06-17 Sagem Stopper for document loader, has end contacting with base of trough and wall constituting obstacle to insertion of sheet in trough, when stopper is in down position, where stopper is activated between up and down positions by spigot
US20050263955A1 (en) * 2004-05-29 2005-12-01 Samsung Electronics Co., Ltd. Automatic document feeding device and image forming apparatus including the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61248829A (en) * 1985-04-26 1986-11-06 Mita Ind Co Ltd Automatic paper feeder with positioning stopper
US20020033572A1 (en) * 2000-09-21 2002-03-21 Matsushita Graphic Communication Systems, Inc. Paper feeder
US20020074711A1 (en) * 2000-12-19 2002-06-20 Akiharu Higaki Sheet sorting apparatus and automatic document feeder apparatus including the same
FR2863601A1 (en) 2003-12-15 2005-06-17 Sagem Stopper for document loader, has end contacting with base of trough and wall constituting obstacle to insertion of sheet in trough, when stopper is in down position, where stopper is activated between up and down positions by spigot
US20050263955A1 (en) * 2004-05-29 2005-12-01 Samsung Electronics Co., Ltd. Automatic document feeding device and image forming apparatus including the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104249942A (en) * 2013-06-26 2014-12-31 东友科技股份有限公司 Paper stopping mechanism with guiding element and automatic paper feed device adapted by same
CN104249943A (en) * 2013-06-26 2014-12-31 东友科技股份有限公司 Paper stopping mechanism with rotating element and automatic paper feed device adapted by same
CN104249943B (en) * 2013-06-26 2016-09-21 东友科技股份有限公司 There is the paper blocking mechanism rotating element and the automatic paper feeder being suitable for thereof
CN104249942B (en) * 2013-06-26 2016-12-28 东友科技股份有限公司 The paper blocking mechanism with guide element and the automatic paper feeder being suitable for thereof

Also Published As

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FR2938831A1 (en) 2010-05-28
FR2938831B1 (en) 2011-10-21
EP2189403B1 (en) 2013-09-04

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