EP3487798A1 - Guide roller and transport device comprising several rollers - Google Patents

Guide roller and transport device comprising several rollers

Info

Publication number
EP3487798A1
EP3487798A1 EP17746394.0A EP17746394A EP3487798A1 EP 3487798 A1 EP3487798 A1 EP 3487798A1 EP 17746394 A EP17746394 A EP 17746394A EP 3487798 A1 EP3487798 A1 EP 3487798A1
Authority
EP
European Patent Office
Prior art keywords
roller
contact surface
rollers
notch
central portion
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
EP17746394.0A
Other languages
German (de)
French (fr)
Other versions
EP3487798B1 (en
Inventor
Paul HORNICK
Gilles PILLONEL
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.)
Bobst Mex SA
Original Assignee
Bobst Mex SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bobst Mex SA filed Critical Bobst Mex SA
Publication of EP3487798A1 publication Critical patent/EP3487798A1/en
Application granted granted Critical
Publication of EP3487798B1 publication Critical patent/EP3487798B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H27/00—Special constructions, e.g. surface features, of feed or guide rollers for webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/02—Feeding or positioning sheets, blanks or webs
    • B31B50/04—Feeding sheets or blanks
    • B31B50/042—Feeding sheets or blanks using rolls, belts or chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/02—Feeding or positioning sheets, blanks or webs
    • B31B50/04—Feeding sheets or blanks
    • B31B50/046—Feeding sheets or blanks involving changing orientation or changing direction of transport
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/16—Inclined tape, roller, or like article-forwarding side registers
    • B65H9/166—Roller
    • 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
    • B65H2404/10—Rollers
    • B65H2404/11—Details of cross-section or profile
    • B65H2404/112—Means for varying cross-section
    • B65H2404/1122—Means for varying cross-section for rendering elastically deformable
    • 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
    • B65H2404/10—Rollers
    • B65H2404/11—Details of cross-section or profile
    • B65H2404/117—Details of cross-section or profile comprising hollow portions
    • 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
    • B65H2404/10—Rollers
    • B65H2404/13—Details of longitudinal profile
    • B65H2404/131—Details of longitudinal profile shape
    • B65H2404/1314—Details of longitudinal profile shape convex
    • 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
    • B65H2404/10—Rollers
    • B65H2404/13—Details of longitudinal profile
    • B65H2404/132—Details of longitudinal profile arrangement of segments along axis
    • B65H2404/1321—Segments juxtaposed along axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard
    • B65H2701/1762—Corrugated

Definitions

  • the present invention relates to a roller for guiding a sheet by friction.
  • the present invention relates to a transport device comprising such rollers for transporting sheets by friction.
  • the present invention may for example apply to the field of the manufacture of foldable boxes from cardboard sheets, the roller then serving to guide each sheet of cardboard.
  • a foldable box may for example be a carton of packaging.
  • cardboard sheets are moved along a production line.
  • the present invention can be applied in other fields requiring the registration of sheet-like objects such as sheets, wooden boards, plastic sheets, etc.
  • EP1837298 discloses a transport device comprising a plurality of rollers for pushing sheets by friction.
  • Each roller has i) an outer surface contacting the sheet, ii) a central bore for a rotational drive of the roller, and iii) an elastically deformable portion located between the outer contact surface and the central bore.
  • the present invention is intended in particular to solve, in whole or in part, the problems mentioned above.
  • the present invention relates to a roller for guiding a sheet by friction.
  • the roller shows: a contact surface intended to be in contact with the sheet, the contact surface generally having a shape of revolution when the roller is at rest,
  • a central portion configured to mechanically connect the roller to a rotating drive member
  • a deformation portion located between the contact surface and the central portion, the deformation portion being configured to deform elastically when the roller guides the sheet by friction.
  • the roller is characterized in that the deformation portion comprises at least one notch extending from the contact surface to the central portion, the notch being arranged so that the deformation portion comprises at least one elastically deformable segment.
  • such a roller offers greater compliance or lateral flexibility than a roller of the state of the art.
  • the or each cut defines on the roller one or more elastically deformable segments which can flex in the axial direction, independently.
  • this independence of deflection makes it possible to release excessive mechanical stresses as soon as an elastically deformable segment is no longer in contact with the sheet.
  • the roller releases the stresses six times per revolution.
  • a roller has a lateral flexibility allowing an alignment of the sheet against a stop, so as to ensure its location before a treatment of the sheet, for example printing, cutting, laminating or folding-gluing.
  • the contact surface is a surface of the roller which is the outermost radially, that is to say the furthest away from the axis of revolution of the contact surface.
  • the axis of the cylinder forming the contact surface coincides with the axis of rotation of the roller when the roller is in the service configuration.
  • the central portion may have retention members configured to retain the or each rotational bearing.
  • the retaining members can be formed by a roller cage.
  • the deformation portion of the roller comprises an outer ring and several connecting members mechanically connecting the central portion and the outer ring, at least one notch extending through the outer ring so as to interrupt the outer ring. at least one time.
  • Each connecting member extends at least in a radial direction.
  • Each connecting member may also extend in another direction, for example in a tangential direction and / or in an axial direction.
  • each connecting member substantially forms a radius for the roller.
  • the roller has openings respectively between two consecutive connecting members.
  • the roller has a reduced weight.
  • the deformation portion is full. In other words, the deformation portion continuously fills the space between the central portion and the contact surface.
  • several link members of the roller are formed by spring blades.
  • the roller comprises recesses located respectively between two consecutive connecting members.
  • several recesses each have a rounded shape.
  • the stresses are reduced and the life of the rollers is increased.
  • several recesses each have the overall shape of a cylinder extending parallel to an axial direction of the roller.
  • a plurality of recesses each have a triangular shape pointing substantially towards the central portion.
  • the recesses can be filled by a more elastically deformable material than the connecting members.
  • the contact surface of the roller generally has the shape of a cylinder.
  • a contact surface may have a large area in contact with the sheets.
  • the contact surface generally has the shape of a torus portion.
  • the number of notches of the roller is greater than or equal to two, for example equal to seven.
  • the roller makes it possible to release the stresses several times per revolution, thus to increase the angle of jogging and to align the guided sheet faster.
  • the notches of the roller are evenly distributed around the central portion, on the perimeter formed by the contact surface.
  • such an arrangement of the notches makes it possible to distribute the mechanical stresses on the roller.
  • the notches are uniformly distributed around the axis of rotation of the roller, when the roller is at rest.
  • At least one notch of the roller is configured so that the intersection of the notch with the contact surface forms a segment rectilinear and parallel to the axis of revolution of the contact surface.
  • the roller is simple to manufacture. It can for example be extruded or cut with water.
  • At least one notch of the roller is configured so that the intersection of the notch with the contact surface forms a segment oblique to the axis of revolution of the contact surface.
  • At least one notch of the roller extends parallel to a plane including the oblique segment.
  • a notch when such a notch is relatively thin, it has a generally flat shape.
  • at least one notch may have a generally curved shape.
  • the roller with its entailes can accommodate at least two disks.
  • a roller divided into several discs still offers greater lateral flexibility.
  • the discs are added to the notches and define on the roller one or more elastically deformable segments that can flex in the axial direction, independently.
  • Such a disk roller has lateral flexibility, each disk bending independently of each other. Thus, this independence of deflection of the disks between them makes it possible to release excessive mechanical stresses, as soon as a disk segment, situated between two notches, and elastically deformable, is no longer in contact with the sheet.
  • a disc roller permits transport and alignment of the sheet, regardless of the position of the sheet initially.
  • the discs are coaxial, the discs are parallel to each other, the discs are of the same thickness, the discs are spaced from each other, and the discs are equidistant from each other.
  • the present invention relates to a transport device, for frictionally transporting sheets, for example cardboard sheets for composing foldable boxes, the transport device comprising a stop and several rollers as described and claimed, the rollers being inclined so as to guide and align each sheet against the stop.
  • the transport device comprises at least two pairs of rollers as described and claimed, each pair of rollers including an upper roller and a lower roller arranged face to face so as to grip a sheet, the transport device comprising in in addition to a rotational drive member integral with the central portion of at least one of the rollers of each pair of rollers, so that the rotational driving member can transmit a torque to at least one of the rollers of each pair of rollers.
  • the transport device furthermore comprises a rotational drive element integral with the central portion so that the rotational drive member can transmit a torque to the roller.
  • FIG. 1 and 2 respectively show a perspective view, at two different angles, of a roller according to a first embodiment of the invention
  • FIG. 3 shows a side view of the roller of Figures 1 and 2;
  • FIG. 4 shows a sectional view along the plane IV - IV of the roller of Figure 3;
  • FIG. 5 shows a view similar to Figure 4 of the roller of Figure 4 equipped with ball bearings
  • Figures 8 and 9 show respectively a perspective view, and a side view with transparency, of a roller according to a third embodiment of the invention.
  • FIG. 10 and 1 1 show respectively a perspective view, and a side view of a roller according to a fourth embodiment of the invention
  • FIG. 12 shows a perspective view of a roller according to a fifth embodiment of the invention.
  • FIG. 13 shows a sectional view along the XIII plane of the roller of Figure 12;
  • - Figure 14 shows a partial perspective view of a roller according to a sixth embodiment of the invention, mounted in a transport device;
  • FIG. 16 shows a sectional view along the plane XVI of the roller of Figure 14;
  • FIG. 17 shows a sectional view of a roller according to a seventh embodiment of the invention.
  • FIG. 18 shows a perspective view of a transport device according to the invention comprising a plurality of idle rollers and a plurality of drive rollers according to the invention
  • Figure 19 is a side view of a pair of rollers of the transport device of Figure 18.
  • FIG. 20 shows a sectional view along the plane XX of the pair of rollers of Figure 19.
  • Figs. 1 to 5 illustrate a roller 1 for guiding a sheet 101 by friction.
  • the roller 1 has a contact surface 2 intended to be in contact with a sheet 101.
  • the contact surface 2 globally has a shape of revolution when the roller 1 is at rest. In this case, the contact surface 2 has the overall shape of a cylinder.
  • the contact surface 2 is here the surface of the roller 1 which is the outermost radially, that is to say the furthest from the axis of revolution X2 of the contact surface 2.
  • the axis of the cylinder forming the contact surface 2 coincides with the axis of rotation of the roller 1 when the roller 1 is at rest.
  • the roller is at least partially composed of a flexible material, for example a polyurethane.
  • a roller according to the invention may have:
  • the roller 1 has a central portion 6 which is configured to mechanically connect the roller 1 to a rotating drive member as shown in Figs. 13 to 16.
  • the roller 1 has a deformation portion 10 which is located between the contact surface 2 and the central portion 6.
  • the deformation portion 10 is configured to deform elastically when the roller 1 guides the sheet 101 by friction.
  • the deformation portion 10 here has six notches 12. Each of the notches 12 extends from the contact surface 2 to the central portion 6. Each notch 12 is arranged so that the deformation portion 10 here comprises six elastically deformable segments 16 The notches 12 are here uniformly distributed around the central portion 6.
  • the deformation portion 10 comprises an outer ring 18 and a plurality of connecting members 11.
  • the link members 1 1 .1 mechanically connect the central portion 6 and the outer ring 18.
  • the notches 12 extend through the outer ring 18 so as to interrupt the outer ring 18 six times.
  • Each link member 1 1 .1 substantially forms a radius for the roller 1.
  • the roller 1 has recesses January 1 located respectively between two consecutive connecting members 1 1 .1.
  • Each recess 1 1 .2 has a triangular shape pointing substantially towards the central portion 6.
  • each notch 12 is configured so that the intersection of this notch 12 with the contact surface 2 forms a rectilinear segment and parallel to the axis of revolution X2 of the contact surface 2.
  • Figs. 6 and 7 illustrate a roller 1 according to a second embodiment.
  • the description of the roller 1 given above in relation to FIG. 1 may be transposed to the roller 1 of Figs. 6 and 7, except for the notable differences mentioned below.
  • the roller 1 of Figs. 6 and 7 differs from the roller 1 of FIG. 1, because the deformation portion 10 has two notches 12, instead of six, which extend from the contact surface 2 to the central portion 6.
  • the roller 1 of Figs. 6 and 7 differs from the roller 1 of FIG. 1, because the deformation portion 10 has no recesses. On the contrary, the deformation portion 10 is full.
  • the deformation portion 10 is configured to deform elastically when the roller 1 guides the sheet 101 by friction.
  • Figs. 8 and 9 illustrate a roller 1 according to a third embodiment.
  • the description of the roller 1 given above in relation to FIG. 1 may be transposed to the roller 1 of Figs. 8 and 9, except for the notable differences mentioned below.
  • the roller 1 of Figs. 8 and 9 differs from the roller 1 of FIG. 1, because each notch 12 is configured so that the intersection of this notch 12 with the contact surface 2 forms a segment oblique to the axis of revolution X2 of the contact surface 2. As shown in FIG. 8, each notch 12 extends parallel to a plane P12 which includes the oblique segment.
  • Figs. 10 and 1 1 illustrate a roller 1 according to a fourth embodiment.
  • the roller 1 of Figs. 10 and 1 1 differs from the roller 1 of FIG. 1, because each recess 1 1 .2 has a rounded shape, to reduce the mechanical stresses.
  • Each recess 1 1 .2 has the overall shape of a cylinder extending parallel to an axial direction X2 of the roller 1.
  • the central portion 6 has a groove 6.0 configured to receive a not shown key. The groove 6.0 extends parallel to the axial direction X2.
  • Figs. 12 and 13 illustrate a roller 1 according to a fifth embodiment.
  • the description of the roller 1 given above in relation to FIG. 1 may be transposed to the roller 1 of Figs. 12 and 13, except for the notable differences mentioned below.
  • the roller 1 of Figs. 12 and 13 differs from the roller 1 of FIG. 1, since each connecting member 1 1 .1 is formed by a respective leaf spring.
  • each recess 1 1 .2 has a triangular shape pointing substantially towards the central portion 6.
  • Figs. 14 to 16 illustrate a roller 1 according to a sixth embodiment.
  • Six notches 12 extend from the contact surface 2 to the central portion 6.
  • Each notch 12 is configured so that the intersection of this notch 12 with the contact surface 2 forms a rectilinear segment and parallel to the axis of contact. X2 revolution of the contact surface 2.
  • the description of the roller 1 given above in relation to FIG. 1 may be transposed to the roller 1 of Figs. 14 to 16, except for the notable differences mentioned below.
  • the roller 1 of Figs. 14 to 16 differs from the roller 1 of FIG. 1, first because each recess 1 1 .2 is found in the extension of each of the notches 12.
  • each recess 1 1 .2 has an elongate shape, pointing substantially towards the central portion 6, and having a spacing greater than the spacing W12 of the corresponding notch 12.
  • the roller 1 is formed with at least two disks 19, parallel to each other, coaxial, and spaced from each other.
  • the discs 19 are of the same thickness, equidistant from each other, and held on the central hub 20.
  • the space between two discs 19 extends from the contact surface 2 to the central portion 6.
  • the notches 12 of the roller 1 are formed on the surface of one or more discs 19 uniformly around the central portion 6, on the perimeter formed by the contact surface 2.
  • the roller 1 of the sixth embodiment comprises four discs 19.
  • the deformation portion 10, and thus the contact surface 2, of the roller 1 are thus divided along the width W2 into four.
  • the contact surface 2 comprises twenty-four elastically deformable segments 16.
  • the notches 12 of a disk 19 are shifted from the teeth of the disk immediately. adjacent.
  • the roller 1 of the seventh embodiment of FIG. 17 differs from the roller 1 of FIG. 1, because it is formed of six disks 19, parallel to each other, coaxial, and spaced apart from each other.
  • the six discs 19 are of the same thickness, equidistant from each other, and held on the central hub 20.
  • the deformation portion 10, and thus the contact surface 2 of the roller 1, are thus divided along the width W2 into six .
  • the contact surface 2 comprises thirty-six elastically deformable segments 16.
  • Figs. 18, 19 and 20 illustrate a transport device 100 according to the invention.
  • the transport device 100 is used to convey friction sheets 101, here cardboard sheets for composing foldable boxes.
  • the transport device 100 comprises a stop 102 and several pairs of rollers 1a and 1b, including idler rollers 1a and drive rollers 1b.
  • the rollers 1a and 1b are inclined towards the stop 102, so as to guide, to bring and to align each sheet 101 against this stop 102.
  • a tangent to the contact surface 2 of the rollers 1a and 1b is thus different from the main longitudinal axis of leaf transport.
  • the tangent to the contact surface 2 is oriented toward the stop 102.
  • Each pair of rollers 1 comprises an upper roller 1a and a lower roller
  • the transport device 100 further comprises, for the lower rollers 1b, a rotational drive member 104 which is integral with the central portion 6, so that the rotational drive member 104 can transmit a torque to the roller 1 when the rotational drive member 104 is connected to an actuator.
  • the transport device 100 further comprises rotational drive members which are secured respectively to the central portions of the rollers of each pair of rollers 1a and 1b, so that the rotary drive member can transmit a torque at least one of the rollers 1 of each pair of rollers 1a and 1b.
  • the drive member may comprise a belt 104.
  • the upper rollers 1a are held by an upper spar 105.
  • the lower rollers 1b are held by a lower spar 106.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
  • Paper Feeding For Electrophotography (AREA)

Abstract

A roller for guiding a sheet (101) by friction, has a contact surface (2) intended to be in contact with the sheet (101), the contact surface (2) having, generally, a rotational shape when the roller (1) is at rest, a central portion (6) configured to mechanically connect the roller (1) to a rotational driving member, and a deformation portion (10) situated between the contact surface (2) and the central portion (6), the deformation portion (10) being configured to deform elastically when the roller (1) guides the sheet (101) by friction; the deformation portion (10) comprises at least one notch (12) extending from the contact surface (2) to the central portion (6), the notch (12) being arranged such that the deformation portion (10) comprises at least one elastically deformable segment (16).

Description

GALET DE GUIDAGE ET DISPOSITIF DE TRANSPORT COMPRENANT  GUIDE ROD AND TRANSPORT DEVICE COMPRISING
PLUSIEURS GALETS  SEVERAL ROLLERS
La présente invention concerne un galet pour guider une feuille par friction. De plus, la présente invention concerne un dispositif de transport comprenant de tels galets pour transporter des feuilles par friction. The present invention relates to a roller for guiding a sheet by friction. In addition, the present invention relates to a transport device comprising such rollers for transporting sheets by friction.
La présente invention peut par exemple s'appliquer au domaine de la fabrication de boîtes pliables à partir de feuilles de carton, le galet servant alors à guider chaque feuille en carton. Une boîte pliable peut par exemple être un carton d'emballage. En général, de telles feuilles de carton sont déplacées le long d'une ligne de fabrication. Par ailleurs, la présente invention peut s'appliquer dans d'autres domaines nécessitant la mise en registre d'objets en forme de feuille tels que des tôles, des planches en bois, des plaques en matières plastiques etc. The present invention may for example apply to the field of the manufacture of foldable boxes from cardboard sheets, the roller then serving to guide each sheet of cardboard. A foldable box may for example be a carton of packaging. In general, such cardboard sheets are moved along a production line. Furthermore, the present invention can be applied in other fields requiring the registration of sheet-like objects such as sheets, wooden boards, plastic sheets, etc.
Etat de la technique State of the art
Le document EP1837298 décrit un dispositif de transport comprenant plusieurs galets pour pousser des feuilles par friction. Chaque galet a i) une surface externe de contact avec la feuille, ii) un alésage central pour un entraînement en rotation du galet, et iii) une portion élastiquement déformable située entre la surface externe de contact et l'alésage central.  EP1837298 discloses a transport device comprising a plurality of rollers for pushing sheets by friction. Each roller has i) an outer surface contacting the sheet, ii) a central bore for a rotational drive of the roller, and iii) an elastically deformable portion located between the outer contact surface and the central bore.
Cependant, lorsque le dispositif de transport du EP1837298 est utilisé pour aligner une feuille qui est légèrement décalée et/ou inclinée par rapport à une butée fixe de référence (taquage), l'alignement de la feuille est sensible à l'angle de taquage réglé par l'opérateur. Mais lorsque l'angle de taquage est petit, la correction de la position de la feuille est très lente. Inversement, lorsque l'angle de taquage est grand, la feuille est alignée plus rapidement, mais au moment où la feuille est plaquée contre la butée, de fortes contraintes mécaniques sont générées, ce qui peut causer un froissement de la feuille ou une usure prématurée du galet.  However, when the transport device of EP1837298 is used to align a sheet which is slightly offset and / or inclined with respect to a fixed reference stop (jogging), the alignment of the sheet is sensitive to the set jogging angle. by the operator. But when the jog angle is small, the correction of the position of the sheet is very slow. Conversely, when the stitch angle is large, the sheet is aligned faster, but as the sheet is pressed against the stopper, high mechanical stresses are generated, which can cause sheet crumpling or premature wear. of the roller.
Exposé de l'invention Presentation of the invention
La présente invention a notamment pour but de résoudre, en tout ou partie, les problèmes mentionnés ci-avant.  The present invention is intended in particular to solve, in whole or in part, the problems mentioned above.
Dans ce but, la présente invention a pour objet un galet pour guider une feuille par friction. Le galet présente: - une surface de contact destinée à être en contact avec la feuille, la surface de contact ayant globalement une forme de révolution lorsque le galet est au repos,For this purpose, the present invention relates to a roller for guiding a sheet by friction. The roller shows: a contact surface intended to be in contact with the sheet, the contact surface generally having a shape of revolution when the roller is at rest,
- une portion centrale configurée pour relier mécaniquement le galet à un organe d'entraînement en rotation, et a central portion configured to mechanically connect the roller to a rotating drive member, and
- une portion de déformation située entre la surface de contact et la portion centrale, la portion de déformation étant configurée pour se déformer élastiquement lorsque le galet guide la feuille par friction.  - A deformation portion located between the contact surface and the central portion, the deformation portion being configured to deform elastically when the roller guides the sheet by friction.
Le galet est caractérisé en ce que la portion de déformation comprend au moins une entaille s'étendant depuis la surface de contact vers la portion centrale, l'entaille étant agencée de sorte que la portion de déformation comprend au moins un segment élastiquement déformable. The roller is characterized in that the deformation portion comprises at least one notch extending from the contact surface to the central portion, the notch being arranged so that the deformation portion comprises at least one elastically deformable segment.
Ainsi, un tel galet offre une plus grande compliance ou souplesse latérale qu'un galet de l'état de la technique. En effet, la ou chaque entaille définit sur le galet un ou plusieurs segments élastiquement déformables qui peuvent fléchir, suivant la direction axiale, de manière indépendante. Donc cette indépendance de fléchissement permet de relâcher des contraintes mécaniques trop fortes dès qu'un segment élastiquement déformable n'est plus en contact avec la feuille. Thus, such a roller offers greater compliance or lateral flexibility than a roller of the state of the art. Indeed, the or each cut defines on the roller one or more elastically deformable segments which can flex in the axial direction, independently. Thus, this independence of deflection makes it possible to release excessive mechanical stresses as soon as an elastically deformable segment is no longer in contact with the sheet.
Par exemple, lorsque la portion de déformation comprend six segments élastiquement déformables et indépendants, le galet permet de relâcher les contraintes six fois par tour. Un tel galet a une flexibilité latérale permettant un alignement de la feuille contre une butée, de façon à garantir son repérage avant un traitement de la feuille, par exemple d'impression, de découpe, de contre-collage ou de pliage-collage.  For example, when the deformation portion comprises six elastically deformable and independent segments, the roller releases the stresses six times per revolution. Such a roller has a lateral flexibility allowing an alignment of the sheet against a stop, so as to ensure its location before a treatment of the sheet, for example printing, cutting, laminating or folding-gluing.
Dans la plupart des variantes, la surface de contact est une surface du galet qui est la plus externe radialement, c'est-à-dire la plus éloignée de l'axe de révolution de la surface de contact. Selon une variante, l'axe du cylindre formant la surface de contact est confondu avec l'axe de rotation du galet lorsque le galet est en configuration de service. Selon une variante, la portion centrale peut comporter des membres de retenue configurés pour retenir le ou chaque palier rotatif. En particulier, les membres de retenue peuvent être formés par une cage à roulements.  In most variants, the contact surface is a surface of the roller which is the outermost radially, that is to say the furthest away from the axis of revolution of the contact surface. According to a variant, the axis of the cylinder forming the contact surface coincides with the axis of rotation of the roller when the roller is in the service configuration. Alternatively, the central portion may have retention members configured to retain the or each rotational bearing. In particular, the retaining members can be formed by a roller cage.
Selon un mode de réalisation, la portion de déformation du galet comprend une couronne externe et plusieurs membres de liaison reliant mécaniquement la portion centrale et la couronne externe, au moins une entaille s'étendant à travers la couronne externe de façon à interrompre la couronne externe au moins une fois. Chaque membre de liaison s'étend au moins selon une direction radiale. Chaque membre de liaison peut aussi s'étendre selon une autre direction, par exemple selon une direction tangentielle et/ou selon une direction axiale. According to one embodiment, the deformation portion of the roller comprises an outer ring and several connecting members mechanically connecting the central portion and the outer ring, at least one notch extending through the outer ring so as to interrupt the outer ring. at least one time. Each connecting member extends at least in a radial direction. Each connecting member may also extend in another direction, for example in a tangential direction and / or in an axial direction.
Selon une variante, chaque membre de liaison forme sensiblement un rayon pour le galet. Selon une variante, le galet a des ouvertures situées respectivement entre deux membres de liaison consécutifs. Ainsi, le galet a un poids réduit.  According to a variant, each connecting member substantially forms a radius for the roller. Alternatively, the roller has openings respectively between two consecutive connecting members. Thus, the roller has a reduced weight.
Alternativement à ce mode de réalisation, la portion de déformation est pleine. En d'autres termes, la portion de déformation emplit de manière continue l'espace situé entre la portion centrale et la surface de contact.  Alternatively to this embodiment, the deformation portion is full. In other words, the deformation portion continuously fills the space between the central portion and the contact surface.
Selon un mode de réalisation, plusieurs membres de liaison du galet sont formés par des lames ressort.  According to one embodiment, several link members of the roller are formed by spring blades.
Selon un mode de réalisation, le galet comprend des évidements situés respectivement entre deux membres de liaison consécutifs. Selon une variante, plusieurs évidements ont chacun une forme arrondie. Ainsi, les contraintes sont réduites et la durée de vie des galets est augmentée. Par exemple, plusieurs évidements ont chacun globalement la forme d'un cylindre s'étendant parallèlement à une direction axiale du galet.  According to one embodiment, the roller comprises recesses located respectively between two consecutive connecting members. According to one variant, several recesses each have a rounded shape. Thus, the stresses are reduced and the life of the rollers is increased. For example, several recesses each have the overall shape of a cylinder extending parallel to an axial direction of the roller.
Selon une variante, plusieurs évidements ont chacun une forme triangulaire pointant sensiblement vers la portion centrale. Selon une variante, les évidements peuvent être comblés par une matière plus élastiquement déformables que les membres de liaison.  According to one variant, a plurality of recesses each have a triangular shape pointing substantially towards the central portion. Alternatively, the recesses can be filled by a more elastically deformable material than the connecting members.
Selon un mode de réalisation, la surface de contact du galet a globalement la forme d'un cylindre. Ainsi, une telle surface de contact peut avoir une grande superficie en contact avec les feuilles. Alternativement à ce mode de réalisation, la surface de contact a globalement la forme d'une portion de tore.  According to one embodiment, the contact surface of the roller generally has the shape of a cylinder. Thus, such a contact surface may have a large area in contact with the sheets. Alternatively to this embodiment, the contact surface generally has the shape of a torus portion.
Selon un mode de réalisation, le nombre d'entailles du galet est supérieur ou égal à deux, par exemple égal à sept. Ainsi, le galet permet de relâcher les contraintes plusieurs fois par tour, donc d'augmenter l'angle de taquage et d'aligner plus rapidement la feuille guidée.  According to one embodiment, the number of notches of the roller is greater than or equal to two, for example equal to seven. Thus, the roller makes it possible to release the stresses several times per revolution, thus to increase the angle of jogging and to align the guided sheet faster.
Selon un mode de réalisation, les entailles du galet sont réparties uniformément autour de la portion centrale, sur le périmètre formé par la surface de contact. Ainsi, une telle disposition des entailles permet de répartir les contraintes mécaniques sur le galet. En d'autres termes, les entailles sont réparties uniformément autour de l'axe de rotation du galet, lorsque le galet est au repos.  According to one embodiment, the notches of the roller are evenly distributed around the central portion, on the perimeter formed by the contact surface. Thus, such an arrangement of the notches makes it possible to distribute the mechanical stresses on the roller. In other words, the notches are uniformly distributed around the axis of rotation of the roller, when the roller is at rest.
Selon un mode de réalisation, au moins une entaille du galet est configurée de sorte que l'intersection de l'entaille avec la surface de contact forme un segment rectiligne et parallèle à l'axe de révolution de la surface de contact. Ainsi, le galet est simple a fabriquer. Il peut par exemple être extrudé ou découpé à l'eau. According to one embodiment, at least one notch of the roller is configured so that the intersection of the notch with the contact surface forms a segment rectilinear and parallel to the axis of revolution of the contact surface. Thus, the roller is simple to manufacture. It can for example be extruded or cut with water.
Selon un mode de réalisation, au moins une entaille du galet est configurée de sorte que l'intersection de l'entaille avec la surface de contact forme un segment oblique à l'axe de révolution de la surface de contact. Ainsi, de telles entailles permettent un passage progressif de la feuille entre deux segments élastiquement déformables tout en réduisant l'amplitude des vibrations.  According to one embodiment, at least one notch of the roller is configured so that the intersection of the notch with the contact surface forms a segment oblique to the axis of revolution of the contact surface. Thus, such notches allow a gradual passage of the sheet between two elastically deformable segments while reducing the amplitude of the vibrations.
Selon un mode de réalisation, au moins une entaille du galet s'étend parallèlement à un plan incluant le segment oblique. En d'autres termes, lorsque une telle entaille est relativement mince, elle a une forme globalement plane. Alternativement à ce mode de réalisation, au moins une entaille peut avoir une forme globalement courbe.  According to one embodiment, at least one notch of the roller extends parallel to a plane including the oblique segment. In other words, when such a notch is relatively thin, it has a generally flat shape. Alternatively to this embodiment, at least one notch may have a generally curved shape.
Selon un autre mode de réalisation, le galet avec ses entailes peut compendre moins deux disques. Ainsi, un galet divisé en plusieurs disques offre encore une plus grande souplesse latérale. En effet, les disques se rajoutent aux entailles et définissent sur le galet un ou plusieurs segments élastiquement déformables qui peuvent fléchir, suivant la direction axiale, de manière indépendante.  According to another embodiment, the roller with its entailes can accommodate at least two disks. Thus, a roller divided into several discs still offers greater lateral flexibility. Indeed, the discs are added to the notches and define on the roller one or more elastically deformable segments that can flex in the axial direction, independently.
Un tel galet à disques possède une flexibilité latérale, chaque disque fléchissant indépendemment les uns des autres. Donc cette indépendance de fléchissement des disques entre-eux permet de relâcher des contraintes mécaniques trop fortes, dès qu'un segment de disque, situé entre deux entailles, et élastiquement déformable n'est plus en contact avec la feuille. Un galet à disques permet un transport et un alignement de la feuille, indépendamment de la position de la feuille au départ.  Such a disk roller has lateral flexibility, each disk bending independently of each other. Thus, this independence of deflection of the disks between them makes it possible to release excessive mechanical stresses, as soon as a disk segment, situated between two notches, and elastically deformable, is no longer in contact with the sheet. A disc roller permits transport and alignment of the sheet, regardless of the position of the sheet initially.
Selon un autre mode de réalisation encore, les disques sont coaxiaux, les disques sont parallèles entre eux, les disques sont de même épaisseur, les disques sont écartés les uns des autres, et les disques sont à équidistance les uns des autres.  According to another embodiment, the discs are coaxial, the discs are parallel to each other, the discs are of the same thickness, the discs are spaced from each other, and the discs are equidistant from each other.
De plus, la présente invention a pour objet un dispositif de transport, pour transporter par friction des feuilles, par exemple des feuilles en carton destinées à composer des boîtes pliables, le dispositif de transport comprenant une butée et plusieurs galets tels que décrits et revendiqués, les galets étant inclinés de façon à guider et aligner chaque feuille contre la butée.  In addition, the present invention relates to a transport device, for frictionally transporting sheets, for example cardboard sheets for composing foldable boxes, the transport device comprising a stop and several rollers as described and claimed, the rollers being inclined so as to guide and align each sheet against the stop.
Dans une variante, le dispositif de transport comprend au moins deux paires de galets tels que décrits et revendiqués, chaque paire de galets incluant un galet supérieur et un galet inférieur agencés face à face de façon à pincer une feuille, le dispositif de transport comprenant en outre un organe d'entraînement en rotation solidaire de la portion centrale d'au moins un des galets de chaque paire de galets, de sorte que l'organe d'entraînement en rotation peut transmettre un couple à au moins un des galets de chaque paire de galets. In a variant, the transport device comprises at least two pairs of rollers as described and claimed, each pair of rollers including an upper roller and a lower roller arranged face to face so as to grip a sheet, the transport device comprising in in addition to a rotational drive member integral with the central portion of at least one of the rollers of each pair of rollers, so that the rotational driving member can transmit a torque to at least one of the rollers of each pair of rollers.
Selon une variante, le dispositif de transport comprend en outre un organe d'entraînement en rotation solidaire de la portion centrale de sorte que l'organe d'entraînement en rotation peut transmettre un couple au galet.  According to a variant, the transport device furthermore comprises a rotational drive element integral with the central portion so that the rotational drive member can transmit a torque to the roller.
Les modes de réalisation et les variantes mentionnés ci-avant peuvent être pris isolément ou selon toute combinaison techniquement possible.  The embodiments and variants mentioned above may be taken individually or in any combination technically possible.
Brève description des dessins Brief description of the drawings
La présente invention sera bien comprise et ses avantages ressortiront aussi à la lumière de la description qui va suivre, donnée uniquement à titre d'exemple non limitatif et faite en référence aux figures annexées, dans lesquelles des signes de références identiques correspondent à des éléments structurellement et/ou fonctionnellement identiques ou similaires. Dans les figures annexées:  The present invention will be well understood and its advantages will also emerge in the light of the description which follows, given solely by way of nonlimiting example and with reference to the appended figures, in which identical reference signs correspond to elements structurally and / or functionally identical or similar. In the attached figures:
- les Figures 1 et 2 représentent respectivement une vue en perspective, selon deux angles différents, d'un galet conforme à un premier mode de réalisation de l'invention;  - Figures 1 and 2 respectively show a perspective view, at two different angles, of a roller according to a first embodiment of the invention;
- la Figure 3 représente une vue latérale du galet des Figures 1 et 2;  - Figure 3 shows a side view of the roller of Figures 1 and 2;
- la Figure 4 représente une vue en coupe selon le plan IV - IV du galet de la Figure 3;  - Figure 4 shows a sectional view along the plane IV - IV of the roller of Figure 3;
- la Figure 5 représente une vue similaire à la Figure 4 du galet de la Figure 4 équipé de roulements à billes;  - Figure 5 shows a view similar to Figure 4 of the roller of Figure 4 equipped with ball bearings;
- les Figures 6 et 7 représentent respectivement une vue en perspective avec transparence, et une vue latérale, d'un galet conforme à un deuxième mode de réalisation de l'invention;  - Figures 6 and 7 respectively show a perspective view with transparency, and a side view of a roller according to a second embodiment of the invention;
- les Figures 8 et 9 représentent respectivement une vue en perspective, et une vue latérale avec transparence, d'un galet conforme à un troisième mode de réalisation de l'invention;  Figures 8 and 9 show respectively a perspective view, and a side view with transparency, of a roller according to a third embodiment of the invention;
- les Figures 10 et 1 1 représentent respectivement une vue en perspective, et une vue latérale, d'un galet conforme à un quatrième mode de réalisation de l'invention;  - Figures 10 and 1 1 show respectively a perspective view, and a side view of a roller according to a fourth embodiment of the invention;
- la Figure 12 représente une vue en perspective d'un galet conforme à un cinquième mode de réalisation de l'invention;  - Figure 12 shows a perspective view of a roller according to a fifth embodiment of the invention;
- la Figure 13 représente une vue en coupe, selon le plan XIII du galet de la Figure 12; - la Figure 14 représente une vue en perspective partielle d'un galet conforme à un sixième mode de réalisation de l'invention, monté dans un dispositif de transport; - Figure 13 shows a sectional view along the XIII plane of the roller of Figure 12; - Figure 14 shows a partial perspective view of a roller according to a sixth embodiment of the invention, mounted in a transport device;
- la Figure 15 représente une vue latérale du galet de la Figure 14;  - Figure 15 shows a side view of the roller of Figure 14;
- la Figure 16 représente une vue en coupe, selon le plan XVI du galet de la Figure 14;  - Figure 16 shows a sectional view along the plane XVI of the roller of Figure 14;
- la Figure 17 représente une vue en coupe d'un galet conforme à un septième mode de réalisation de l'invention;  - Figure 17 shows a sectional view of a roller according to a seventh embodiment of the invention;
- la Figure 18 représente une vue en perspective d'un dispositif de transport conforme à l'invention comprenant plusieurs galets fous et plusieurs galets d'entraînement conformes à l'invention;  - Figure 18 shows a perspective view of a transport device according to the invention comprising a plurality of idle rollers and a plurality of drive rollers according to the invention;
- la Figure 19 représente une vue latérale d'une paire de galets du dispositif de transport de la Figure 18; et  Figure 19 is a side view of a pair of rollers of the transport device of Figure 18; and
- la Figure 20 représente une vue en coupe, selon le plan XX de la paire de galets de la Figure 19.  - Figure 20 shows a sectional view along the plane XX of the pair of rollers of Figure 19.
Exposé détaillé de modes de réalisation préférés Detailed description of preferred embodiments
Les Figs. 1 à 5 illustrent un galet 1 pour guider une feuille 101 par friction. Le galet 1 a une surface de contact 2 destinée à être en contact avec une feuille 101 . La surface de contact 2 a globalement une forme de révolution lorsque le galet 1 est au repos. En l'occurrence, la surface de contact 2 a globalement la forme d'un cylindre.  Figs. 1 to 5 illustrate a roller 1 for guiding a sheet 101 by friction. The roller 1 has a contact surface 2 intended to be in contact with a sheet 101. The contact surface 2 globally has a shape of revolution when the roller 1 is at rest. In this case, the contact surface 2 has the overall shape of a cylinder.
La surface de contact 2 est ici la surface du galet 1 qui est la plus externe radialement, c'est-à-dire la plus éloignée de l'axe de révolution X2 de la surface de contact 2. L'axe du cylindre formant la surface de contact 2 est confondu avec l'axe de rotation du galet 1 lorsque le galet 1 est au repos.  The contact surface 2 is here the surface of the roller 1 which is the outermost radially, that is to say the furthest from the axis of revolution X2 of the contact surface 2. The axis of the cylinder forming the contact surface 2 coincides with the axis of rotation of the roller 1 when the roller 1 is at rest.
Selon une variante, le galet est composé au moins partiellement d'un matériau souple, par exemple un polyuréthane. À titre d'exemple de réalisation, un galet conforme à l'invention peut avoir :  According to one variant, the roller is at least partially composed of a flexible material, for example a polyurethane. As an exemplary embodiment, a roller according to the invention may have:
- un diamètre D2 environ égal à 60 mm,  a diameter D2 approximately equal to 60 mm,
- une largeur W2 environ égale à 30 mm,  a width W2 approximately equal to 30 mm,
- au moins une fente ayant un écartement W12 environ égal à 1 mm,  at least one slot having a spacing W12 approximately equal to 1 mm,
- une dureté environ égale à 60 ShoreA, la dureté étant mesurée sur la surface de contact.  a hardness of about 60 ShoreA, the hardness being measured on the contact surface.
Le galet 1 a une portion centrale 6 qui est configurée pour relier mécaniquement le galet 1 à un organe d'entraînement en rotation comme illustré aux Figs. 13 à 16. Le galet 1 a une portion de déformation 10 qui est située entre la surface de contact 2 et la portion centrale 6. La portion de déformation 10 est configurée pour se déformer élastiquement lorsque le galet 1 guide la feuille 101 par friction. The roller 1 has a central portion 6 which is configured to mechanically connect the roller 1 to a rotating drive member as shown in Figs. 13 to 16. The roller 1 has a deformation portion 10 which is located between the contact surface 2 and the central portion 6. The deformation portion 10 is configured to deform elastically when the roller 1 guides the sheet 101 by friction.
La portion de déformation 10 a ici six entailles 12. Chacune des entailles 12 s'étend depuis la surface de contact 2 vers la portion centrale 6. Chaque entaille 12 est agencée de sorte que la portion de déformation 10 comprend ici six segments élastiquement déformables 16. Les entailles 12 sont ici réparties uniformément autour de la portion centrale 6.  The deformation portion 10 here has six notches 12. Each of the notches 12 extends from the contact surface 2 to the central portion 6. Each notch 12 is arranged so that the deformation portion 10 here comprises six elastically deformable segments 16 The notches 12 are here uniformly distributed around the central portion 6.
La portion de déformation 10 comprend une couronne externe 18 et plusieurs membres de liaison 1 1 .1 . Les membres de liaison 1 1 .1 relient mécaniquement la portion centrale 6 et la couronne externe 18. Dans l'exemple des Figs. 1 à 5, les entailles 12 s'étendent à travers la couronne externe 18 de façon à interrompre la couronne externe 18 six fois.  The deformation portion 10 comprises an outer ring 18 and a plurality of connecting members 11. The link members 1 1 .1 mechanically connect the central portion 6 and the outer ring 18. In the example of Figs. 1 to 5, the notches 12 extend through the outer ring 18 so as to interrupt the outer ring 18 six times.
Chaque membre de liaison 1 1 .1 forme sensiblement un rayon pour le galet 1 . Le galet 1 a des évidements 1 1 .2 situés respectivement entre deux membres de liaison consécutifs 1 1 .1 . Chaque évidement 1 1 .2 a une forme triangulaire pointant sensiblement vers la portion centrale 6.  Each link member 1 1 .1 substantially forms a radius for the roller 1. The roller 1 has recesses January 1 located respectively between two consecutive connecting members 1 1 .1. Each recess 1 1 .2 has a triangular shape pointing substantially towards the central portion 6.
Dans l'exemple des Figs. 1 à 5, chaque entaille 12 est configurée de sorte que l'intersection de cette entaille 12 avec la surface de contact 2 forme un segment rectiligne et parallèle à l'axe de révolution X2 de la surface de contact 2.  In the example of Figs. 1 to 5, each notch 12 is configured so that the intersection of this notch 12 with the contact surface 2 forms a rectilinear segment and parallel to the axis of revolution X2 of the contact surface 2.
Les Figs. 6 et 7 illustrent un galet 1 conforme à un deuxième mode de réalisation. Dans la mesure où le galet 1 des Figs. 6 et 7 est similaire au galet 1 de la Fig. 1 , la description du galet 1 donnée ci-avant en relation avec la Fig. 1 peut être transposée au galet 1 des Figs. 6 et 7, à l'exception des différences notables mentionnées ci- après. Le galet 1 des Figs. 6 et 7 diffère du galet 1 de la Fig. 1 , car la portion de déformation 10 a deux entailles 12, au lieu de six, qui s'étendent depuis la surface de contact 2 vers la portion centrale 6. De plus, le galet 1 des Figs. 6 et 7 diffère du galet 1 de la Fig. 1 , car la portion de déformation 10 n'a pas d'évidements. Au contraire, la portion de déformation 10 est pleine. Cependant, comme dans l'exemple de la Fig. 1 , la portion de déformation 10 est configurée pour se déformer élastiquement lorsque le galet 1 guide la feuille 101 par friction.  Figs. 6 and 7 illustrate a roller 1 according to a second embodiment. Inasmuch as the roller 1 of Figs. 6 and 7 is similar to the roller 1 of FIG. 1, the description of the roller 1 given above in relation to FIG. 1 may be transposed to the roller 1 of Figs. 6 and 7, except for the notable differences mentioned below. The roller 1 of Figs. 6 and 7 differs from the roller 1 of FIG. 1, because the deformation portion 10 has two notches 12, instead of six, which extend from the contact surface 2 to the central portion 6. In addition, the roller 1 of Figs. 6 and 7 differs from the roller 1 of FIG. 1, because the deformation portion 10 has no recesses. On the contrary, the deformation portion 10 is full. However, as in the example of FIG. 1, the deformation portion 10 is configured to deform elastically when the roller 1 guides the sheet 101 by friction.
Les Figs. 8 et 9 illustrent un galet 1 conforme à un troisième mode de réalisation. Dans la mesure où le galet 1 des Figs. 8 et 9 est similaire au galet 1 de la Fig. 1 , la description du galet 1 donnée ci-avant en relation avec la Fig. 1 peut être transposée au galet 1 des Figs. 8 et 9, à l'exception des différences notables mentionnées ci- après. Le galet 1 des Figs. 8 et 9 diffère du galet 1 de la Fig. 1 , car chaque entaille 12 est configurée de sorte que l'intersection de cette entaille 12 avec la surface de contact 2 forme un segment oblique à l'axe de révolution X2 de la surface de contact 2. Comme le montre la Fig. 8, chaque entaille 12 s'étend parallèlement à un plan P12 qui inclut le segment oblique. Figs. 8 and 9 illustrate a roller 1 according to a third embodiment. Inasmuch as the roller 1 of Figs. 8 and 9 is similar to the roller 1 of FIG. 1, the description of the roller 1 given above in relation to FIG. 1 may be transposed to the roller 1 of Figs. 8 and 9, except for the notable differences mentioned below. The roller 1 of Figs. 8 and 9 differs from the roller 1 of FIG. 1, because each notch 12 is configured so that the intersection of this notch 12 with the contact surface 2 forms a segment oblique to the axis of revolution X2 of the contact surface 2. As shown in FIG. 8, each notch 12 extends parallel to a plane P12 which includes the oblique segment.
Les Figs. 10 et 1 1 illustrent un galet 1 conforme à un quatrième mode de réalisation. Dans la mesure où le galet 1 des Figs. 10 et 1 1 est similaire au galet 1 de la Fig. 1 , la description du galet 1 donnée ci-avant en relation avec la Fig. 1 peut être transposée au galet 1 des Figs. 10 et 1 1 , à l'exception des différences notables mentionnées ci-après. Le galet 1 des Figs. 10 et 1 1 diffère du galet 1 de la Fig. 1 , car chaque évidement 1 1 .2 a une forme arrondie, pour réduire les contraintes mécaniques. Chaque évidement 1 1 .2 a globalement la forme d'un cylindre s'étendant parallèlement à une direction axiale X2 du galet 1 . De plus, la portion centrale 6 a une rainure 6.0 configurée pour recevoir une clavette non représentée. La rainure 6.0 s'étend parallèlement à la direction axiale X2.  Figs. 10 and 1 1 illustrate a roller 1 according to a fourth embodiment. Inasmuch as the roller 1 of Figs. 10 and 11 is similar to the roller 1 of FIG. 1, the description of the roller 1 given above in relation to FIG. 1 may be transposed to the roller 1 of Figs. 10 and 1 1, except for the notable differences mentioned below. The roller 1 of Figs. 10 and 1 1 differs from the roller 1 of FIG. 1, because each recess 1 1 .2 has a rounded shape, to reduce the mechanical stresses. Each recess 1 1 .2 has the overall shape of a cylinder extending parallel to an axial direction X2 of the roller 1. In addition, the central portion 6 has a groove 6.0 configured to receive a not shown key. The groove 6.0 extends parallel to the axial direction X2.
Les Figs. 12 et 13 illustrent un galet 1 conforme à un cinquième mode de réalisation. Dans la mesure où le galet 1 des Figs. 12 et 13 est similaire au galet 1 de la Fig. 1 , la description du galet 1 donnée ci-avant en relation avec la Fig. 1 peut être transposée au galet 1 des Figs. 12 et 13, à l'exception des différences notables mentionnées ci-après. Le galet 1 des Figs. 12 et 13 diffère du galet 1 de la Fig. 1 , car chaque membre de liaison 1 1 .1 est formé par une lame ressort respective. Par ailleurs, comme pour le galet 1 de la Fig. 1 , chaque évidement 1 1 .2 a une forme triangulaire pointant sensiblement vers la portion centrale 6.  Figs. 12 and 13 illustrate a roller 1 according to a fifth embodiment. Inasmuch as the roller 1 of Figs. 12 and 13 is similar to the roller 1 of FIG. 1, the description of the roller 1 given above in relation to FIG. 1 may be transposed to the roller 1 of Figs. 12 and 13, except for the notable differences mentioned below. The roller 1 of Figs. 12 and 13 differs from the roller 1 of FIG. 1, since each connecting member 1 1 .1 is formed by a respective leaf spring. Moreover, as for the roller 1 of FIG. 1, each recess 1 1 .2 has a triangular shape pointing substantially towards the central portion 6.
Les Figs. 14 à 16 illustrent un galet 1 conforme à un sixième mode de réalisation. Six entailles 12 s'étendent depuis la surface de contact 2 vers la portion centrale 6. Chaque entaille 12 est configurée de sorte que l'intersection de cette entaille 12 avec la surface de contact 2 forme un segment rectiligne et parallèle à l'axe de révolution X2 de la surface de contact 2. Dans la mesure où le galet 1 des Figs. 14 à 16 est similaire au galet 1 de la Fig. 1 , la description du galet 1 donnée ci-avant en relation avec la Fig. 1 peut être transposée au galet 1 des Figs. 14 à 16, à l'exception des différences notables mentionnées ci-après.  Figs. 14 to 16 illustrate a roller 1 according to a sixth embodiment. Six notches 12 extend from the contact surface 2 to the central portion 6. Each notch 12 is configured so that the intersection of this notch 12 with the contact surface 2 forms a rectilinear segment and parallel to the axis of contact. X2 revolution of the contact surface 2. Insofar as the roller 1 of Figs. 14 to 16 is similar to the roller 1 of FIG. 1, the description of the roller 1 given above in relation to FIG. 1 may be transposed to the roller 1 of Figs. 14 to 16, except for the notable differences mentioned below.
Le galet 1 des Figs. 14 à 16 diffère du galet 1 de la Fig. 1 , tout d'abord car chaque évidement 1 1 .2 se retrouve dans le prolongement de chacune des entailles 12. De plus, chaque évidement 1 1 .2 a une forme allongée, pointant sensiblement vers la portion centrale 6, et ayant un écartement supérieur à l'écartement W12 de l'entaille 12 correspondante. Par ailleurs, le galet 1 est formé avec au moins deux disques 19, parallèles entre eux, coaxiaux, et écartés les uns des autres. Les disques 19 sont de même épaisseur, à équidistance les uns des autres, et maintenus sur le moyeu central 20. L'espace entre deux disques 19 s'étends depuis la surface de contact 2 vers la portion centrale 6. Les entailles 12 du galet 1 sont ménagées à la surface d'un ou des disques 19 uniformément autour de la portion centrale 6, sur le périmètre formé par la surface de contact 2. The roller 1 of Figs. 14 to 16 differs from the roller 1 of FIG. 1, first because each recess 1 1 .2 is found in the extension of each of the notches 12. In addition, each recess 1 1 .2 has an elongate shape, pointing substantially towards the central portion 6, and having a spacing greater than the spacing W12 of the corresponding notch 12. Furthermore, the roller 1 is formed with at least two disks 19, parallel to each other, coaxial, and spaced from each other. The discs 19 are of the same thickness, equidistant from each other, and held on the central hub 20. The space between two discs 19 extends from the contact surface 2 to the central portion 6. The notches 12 of the roller 1 are formed on the surface of one or more discs 19 uniformly around the central portion 6, on the perimeter formed by the contact surface 2.
Le galet 1 du sixième mode de réalisation comprend quatre disques 19. La portion de déformation 10, et ainsi la surface de contact 2, du galet 1 sont ainsi divisées selon la largeur W2 en quatre. Avec quatre disques 19 et six entailles 12 sur chacun des quatre disques 19, la surface de contact 2 comprend vingt-quatre segments élastiquement déformables 16. Dans ce mode de réalisation, les entailles 12 d'un disque 19 sont décalées des entailes du disque immédiatement adjacent.  The roller 1 of the sixth embodiment comprises four discs 19. The deformation portion 10, and thus the contact surface 2, of the roller 1 are thus divided along the width W2 into four. With four disks 19 and six notches 12 on each of the four disks 19, the contact surface 2 comprises twenty-four elastically deformable segments 16. In this embodiment, the notches 12 of a disk 19 are shifted from the teeth of the disk immediately. adjacent.
Le galet 1 du septième mode de réalisation de la Fig. 17 diffère du galet 1 de la Fig. 1 , car il est formé de six disques 19, parallèles entre eux, coaxiaux, et écartés les uns des autres. Les six disques 19 sont de même épaisseur, à équidistance les uns des autres, et maintenus sur le moyeu central 20. La portion de déformation 10, et ainsi la surface de contact 2 du galet 1 , sont ainsi divisées selon la largeur W2 en six. Avec six disques 19 et six entailles 12 sur chacun des six disques 19, la surface de contact 2 comprend trente-six segments élastiquement déformables 16.  The roller 1 of the seventh embodiment of FIG. 17 differs from the roller 1 of FIG. 1, because it is formed of six disks 19, parallel to each other, coaxial, and spaced apart from each other. The six discs 19 are of the same thickness, equidistant from each other, and held on the central hub 20. The deformation portion 10, and thus the contact surface 2 of the roller 1, are thus divided along the width W2 into six . With six disks 19 and six notches 12 on each of the six disks 19, the contact surface 2 comprises thirty-six elastically deformable segments 16.
Les Figs. 18, 19 et 20 illustrent un dispositif de transport 100 conforme à l'invention. Le dispositif de transport 100 sert à transporter par friction des feuilles 101 , ici des feuilles en carton destinées à composer des boîtes pliables.  Figs. 18, 19 and 20 illustrate a transport device 100 according to the invention. The transport device 100 is used to convey friction sheets 101, here cardboard sheets for composing foldable boxes.
Le dispositif de transport 100 comprend une butée 102 et plusieurs paires de galets 1 a et 1 b, dont des galets fous 1 a et des galets d'entraînement 1 b. Les galets 1 a et 1 b sont inclinés en direction de la butée 102, de façon à guider, à amener et à aligner chaque feuille 101 contre cette butée 102. Une tangente à la surface de contact 2 des galets 1 a et 1 b est ainsi différente de l'axe longitudinal principal de transport des feuilles. La tangente à la surface de contact 2 est orientée en direction de la butée 102.  The transport device 100 comprises a stop 102 and several pairs of rollers 1a and 1b, including idler rollers 1a and drive rollers 1b. The rollers 1a and 1b are inclined towards the stop 102, so as to guide, to bring and to align each sheet 101 against this stop 102. A tangent to the contact surface 2 of the rollers 1a and 1b is thus different from the main longitudinal axis of leaf transport. The tangent to the contact surface 2 is oriented toward the stop 102.
Chaque paire de galets 1 comprend un galet supérieur 1 a et un galet inférieur Each pair of rollers 1 comprises an upper roller 1a and a lower roller
1 b, agencés face à face de façon à pincer une feuille 101 . Les galets 1 a et 1 b sont réalisés de manière analogue au galets 1 décrits ci-dessus. Le dispositif de transport 100 comprend en outre, pour les galets inférieurs 1 b, un organe d'entraînement en rotation 104 qui est solidaire de la portion centrale 6, de sorte que l'organe d'entraînement en rotation 104 peut transmettre un couple au galet 1 lorsque l'organe d'entraînement en rotation 104 est relié à un actionneur. Le dispositif de transport 100 comprend en outre des organes d'entraînement en rotation qui sont solidaires respectivement des portions centrales des galets de chaque paire de galets 1 a et 1 b, de sorte que l'organe d'entraînement en rotation peut transmettre un couple à moins un des galets 1 de chaque paire de galets 1 a et 1 b. Dans cet exemple de réalisation, l'organe d'entraînement peut comprendre une courroie 104. Les galets supérieurs 1 a sont maintenus par un longeron supérieur 105. Les galets inférieurs 1 b sont maintenus par un longeron inférieur 106. 1b, arranged face to face so as to pinch a sheet 101. The rollers 1a and 1b are made in a similar manner to the rollers 1 described above. The transport device 100 further comprises, for the lower rollers 1b, a rotational drive member 104 which is integral with the central portion 6, so that the rotational drive member 104 can transmit a torque to the roller 1 when the rotational drive member 104 is connected to an actuator. The transport device 100 further comprises rotational drive members which are secured respectively to the central portions of the rollers of each pair of rollers 1a and 1b, so that the rotary drive member can transmit a torque at least one of the rollers 1 of each pair of rollers 1a and 1b. In this embodiment, the drive member may comprise a belt 104. The upper rollers 1a are held by an upper spar 105. The lower rollers 1b are held by a lower spar 106.
L'invention n'est pas limitée aux modes de réalisation particuliers décrits, ni à des modes de réalisation à la portée de l'homme du métier. D'autres modes de réalisation peuvent être envisagés sans sortir du cadre de l'invention, à partir de tout élément équivalent à un élément indiqué dans la présente demande de brevet. The invention is not limited to the particular embodiments described, nor to embodiments within the scope of those skilled in the art. Other embodiments may be envisaged without departing from the scope of the invention, from any element equivalent to an element indicated in the present patent application.

Claims

REVENDICATIONS
1 . Galet pour guider une feuille (101 ) par friction, le galet (1 ) présentant: 1. Roller for guiding a sheet (101) by friction, the roller (1) having:
- une surface de contact (2) destinée à être en contact avec la feuille (101 ), la surface de contact (2) ayant globalement une forme de révolution lorsque le galet (1 ) est au repos,  a contact surface (2) intended to be in contact with the sheet (101), the contact surface (2) generally having a shape of revolution when the roller (1) is at rest,
- une portion centrale (6) configurée pour relier mécaniquement le galet (1 ) à un organe d'entraînement en rotation, et  a central portion (6) configured to mechanically connect the roller (1) to a rotary drive member, and
- une portion de déformation (10) située entre la surface de contact (2) et la portion centrale (6), la portion de déformation (10) étant configurée pour se déformer élastiquement lorsque le galet (1 ) guide la feuille (101 ) par friction, caractérisé en ce que la portion de déformation (10) comprend au moins une entaille (12) s'étendant depuis la surface de contact (2) vers la portion centrale (6), l'entaille (12) étant agencée de sorte que la portion de déformation (10) comprend au moins un segment élastiquement déformable (16).  a deformation portion (10) located between the contact surface (2) and the central portion (6), the deformation portion (10) being configured to deform elastically when the roller (1) guides the sheet (101) by friction, characterized in that the deformation portion (10) comprises at least one notch (12) extending from the contact surface (2) towards the central portion (6), the notch (12) being arranged of so that the deformation portion (10) comprises at least one elastically deformable segment (16).
2. Galet selon la revendication 1 , dans lequel la portion de déformation (10) comprend une couronne externe (18) et plusieurs membres de liaison (1 1 .1 ) reliant mécaniquement la portion centrale (6) et la couronne externe (18), au moins une entaille (12) s'étendant à travers la couronne externe (18) de façon à interrompre la couronne externe (18) au moins une fois. 2. Roller according to claim 1, wherein the deformation portion (10) comprises an outer ring (18) and a plurality of connecting members (1 1 .1) mechanically connecting the central portion (6) and the outer ring (18). at least one notch (12) extending through the outer ring (18) to interrupt the outer ring (18) at least once.
3. Galet selon la revendication 2, dans lequel plusieurs membres de liaison (1 1 .1 ) sont formés par des lames ressort. 3. Roller according to claim 2, wherein a plurality of connecting members (1 1 .1) are formed by spring blades.
4. Galet selon la revendication 2 ou 3, comprenant des évidements (1 1 .2) situés respectivement entre deux membres de liaison consécutifs (1 1 .1 ). 4. Roller according to claim 2 or 3, comprising recesses (1 1 .2) respectively between two consecutive connecting members (1 1 .1).
5. Galet selon l'une des revendications précédentes, dans lequel la surface de contact (2) a globalement la forme d'un cylindre. 5. Roller according to one of the preceding claims, wherein the contact surface (2) has the overall shape of a cylinder.
6. Galet selon l'une des revendications précédentes, dans lequel le nombre d'entailles (12) est supérieur ou égal à deux, par exemple égal à sept. 6. Roller according to one of the preceding claims, wherein the number of notches (12) is greater than or equal to two, for example equal to seven.
7. Galet selon la revendication 6, dans lequel les entailles (12) sont réparties uniformément autour de la portion centrale (6). 7. Roller according to claim 6, wherein the notches (12) are evenly distributed around the central portion (6).
8. Galet selon l'une des revendications précédentes, dans lequel au moins une entaille (12) est configurée de sorte que l'intersection de l'entaille (12) avec la surface de contact (2) forme un segment rectiligne et parallèle à l'axe de révolution (X2) de la surface de contact (2). 8. Roller according to one of the preceding claims, wherein at least one notch (12) is configured so that the intersection of the notch (12) with the contact surface (2) forms a rectilinear segment and parallel to the axis of revolution (X2) of the contact surface (2).
9. Galet selon l'une des revendications précédentes, dans lequel au moins une entaille (12) est configurée de sorte que l'intersection de l'entaille (12) avec la surface de contact (2) forme un segment oblique à l'axe de révolution (X2) de la surface de contact (2). 9. Roller according to one of the preceding claims, wherein at least one notch (12) is configured so that the intersection of the notch (12) with the contact surface (2) forms an oblique segment to the axis of revolution (X2) of the contact surface (2).
10. Galet selon la revendication 9, dans lequel au moins une entaille (12) s'étend parallèlement à un plan (P12) incluant le segment oblique. 10. Roller according to claim 9, wherein at least one notch (12) extends parallel to a plane (P12) including the oblique segment.
1 1 . Galet selon l'une des revendications précédentes, comprenant au moins deux disques (19). 1 1. Roller according to one of the preceding claims, comprising at least two discs (19).
12. Galet selon la revendication 1 1 , dans lequel les disques (19) sont coaxiaux, parallèles entre eux, de même épaisseur, écartés, et à équidistance les uns des autres. 12. Roller according to claim 1 1, wherein the discs (19) are coaxial, parallel to each other, of the same thickness, spaced, and equidistant from each other.
13. Dispositif de transport, pour transporter par friction des feuilles (101 ), par exemple des feuilles en carton destinées à composer des boîtes pliables, le dispositif de transport (100) comprenant une butée (102) et plusieurs galets (1 ) selon l'une des revendications précédentes, les galets (1 ) étant inclinés de façon à guider et aligner chaque feuille (101 ) contre la butée (102). 13. A transport device for frictionally transporting sheets (101), for example cardboard sheets for folding boxes, the transport device (100) comprising a stop (102) and a plurality of rollers (1) according to the invention. one of the preceding claims, the rollers (1) being inclined to guide and align each sheet (101) against the stop (102).
14. Dispositif selon la revendication 1 1 , comprenant au moins deux paires de galets (1 ) selon l'une des revendications 1 à 10, chaque paire de galets incluant un galet supérieur et un galet inférieur agencés face à face de façon à pincer une feuille14. Device according to claim 1 1, comprising at least two pairs of rollers (1) according to one of claims 1 to 10, each pair of rollers including an upper roller and a lower roller arranged face to face so as to pinch a leaf
(101 ), le dispositif de transport (100) comprenant en outre un organe d'entraînement en rotation solidaire de la portion centrale (6) d'au moins un des galets (1 ) de chaque paire de galets (1 ), de sorte que l'organe d'entraînement en rotation peut transmettre un couple à au moins un des galets (1 ) de chaque paire de galets (1 ). (101), the transport device (100) further comprising a rotational driving member secured to the central portion (6) of at least one of the rollers (1) of each pair of rollers (1), so the rotational driving member can transmit a torque to at least one of the rollers (1) of each pair of rollers (1).
EP17746394.0A 2016-07-19 2017-07-12 Guiding roller and transport device comprising a plurality of rollers Active EP3487798B1 (en)

Applications Claiming Priority (2)

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EP16020275 2016-07-19
PCT/EP2017/025200 WO2018015025A1 (en) 2016-07-19 2017-07-12 Guide roller and transport device comprising several rollers

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EP3487798B1 (en) 2021-05-05
CA3031221C (en) 2021-10-26
US20210292123A1 (en) 2021-09-23
CN109715539B (en) 2021-07-30
WO2018015025A1 (en) 2018-01-25
BR112019000992A2 (en) 2019-05-14
TW201805223A (en) 2018-02-16
JP6918918B2 (en) 2021-08-11
KR102149624B1 (en) 2020-08-31
ES2874303T3 (en) 2021-11-04
KR20190026919A (en) 2019-03-13
CA3031221A1 (en) 2018-01-25
BR112019000992B1 (en) 2022-12-06
JP2019523199A (en) 2019-08-22
TWI639547B (en) 2018-11-01
CN109715539A (en) 2019-05-03
US11465869B2 (en) 2022-10-11

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