EP3487798B1 - Guiding roller and transport device comprising a plurality of rollers - Google Patents

Guiding roller and transport device comprising a plurality of rollers Download PDF

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Publication number
EP3487798B1
EP3487798B1 EP17746394.0A EP17746394A EP3487798B1 EP 3487798 B1 EP3487798 B1 EP 3487798B1 EP 17746394 A EP17746394 A EP 17746394A EP 3487798 B1 EP3487798 B1 EP 3487798B1
Authority
EP
European Patent Office
Prior art keywords
roller
contact surface
rollers
sheet
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.)
Active
Application number
EP17746394.0A
Other languages
German (de)
French (fr)
Other versions
EP3487798A1 (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

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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
    • 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 can for example be applied to the field of manufacturing foldable boxes from cardboard sheets, the roller then serving to guide each cardboard sheet.
  • a collapsible box can for example be a packing carton. In general, such sheets of cardboard are moved along a production line.
  • the present invention can be applied in other fields requiring the registration of objects in the form of sheet such as sheets, wooden planks, plastic plates etc.
  • the document EP1837298 describes a transport device comprising several rollers for pushing sheets by friction.
  • Each roller a) an outer surface in contact with the sheet, ii) a central bore for driving the roller in rotation, and iii) an elastically deformable portion located between the outer contact surface and the central bore.
  • the transport device of the EP1837298 is used to align a sheet that is slightly offset and / or tilted with respect to a fixed reference stopper (jogging)
  • the alignment of the sheet is sensitive to the jogging angle set by the operator. But when the jogging angle is small, the correction of the sheet position is very slow. Conversely, when the jogging angle is large, the sheet is aligned faster, but the moment the sheet is pressed against the stopper, strong mechanical stresses are generated, which can cause sheet wrinkling or premature wear. pebble.
  • the document JP2002370851 discloses a lateral registration correction mechanism for misaligned sheets of paper in a copier or printer according to the preamble of claim 1.
  • the mechanism comprises disc-shaped rollers comprising flexible segments and configured to flex axially.
  • the object of the present invention is in particular to resolve, in whole or in part, the problems mentioned above.
  • the deformation portion comprises at least one notch extending from the contact surface towards 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 notch defines on the roller one or more elastically deformable segments which can flex, in the axial direction, independently. Therefore, 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 makes it possible to release the stresses six times per revolution.
  • Such a roller has lateral flexibility allowing the sheet to be aligned against a stop, so as to guarantee its registration 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 radially outermost, that is to say the furthest 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 include retaining members configured to retain the or each rotary bearing.
  • the retaining members can be formed by a rolling cage.
  • the roller is characterized in that 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 of so as to interrupt the outer crown at least once.
  • Each connecting member extends at least in a radial direction.
  • Each connecting member can also extend in another direction, for example in a tangential direction and / or in an axial direction.
  • the roller is characterized in that each connecting member substantially forms a radius for the roller.
  • the roller has openings located respectively between two consecutive connecting members. Thus, the roller has a reduced weight.
  • the deformation portion is solid.
  • the deformation portion continuously fills the space located between the central portion and the contact surface.
  • several connecting members of the roller are formed by leaf springs.
  • 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.
  • each recesses each have a triangular shape pointing substantially towards the central portion.
  • the recesses can be filled with a material more elastically deformable than the connecting members.
  • the contact surface of the roller has the overall shape of a cylinder.
  • a contact surface can have a large surface area in contact with the sheets.
  • the contact surface has the overall shape of a torus portion.
  • the number of notches in 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, therefore to increase the jogging angle and align the guided sheet more quickly.
  • the notches in the roller are distributed uniformly 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 distributed uniformly 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 easy to manufacture. It can for example be extruded or cut in water.
  • At least one notch of the roller is configured such 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 planar shape.
  • at least one notch can have a generally curved shape.
  • the roller with its notches can comprise at least two disks.
  • a roller divided into several discs offers even greater lateral flexibility.
  • the discs are added to the notches and define on the roller one or more elastically deformable segments which can flex, in the axial direction, independently.
  • Such a disc roller has lateral flexibility, each disc flexing independently of each other. So this independence of deflection of the discs between them makes it possible to release too strong mechanical stresses, as soon as a disc segment, located between two notches, and elastically deformable is no longer in contact with the sheet.
  • a disc roller allows transport and alignment of the sheet, regardless of the position of the sheet at the start.
  • the discs are coaxial, the discs are mutually parallel, the discs are of the same thickness, the discs are spaced apart from each other, and the discs are equidistant from each other.
  • the present invention relates to a transport device for transporting sheets by friction, for example cardboard sheets intended to compose foldable boxes, the transport device comprising a stopper and several rollers as described and claimed, the rollers being inclined so as to guide and align each sheet against the stopper.
  • 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 pinch 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 drive member can transmit torque to at least one of the rollers of each pair of rollers.
  • the transport device further comprises a rotational drive member secured to the central portion so that the rotational drive member can transmit torque to the roller.
  • the 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 generally 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 radially outermost, 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 roller 1 when roller 1 is at rest.
  • the roller 1 has a central portion 6 which is configured to mechanically connect the roller 1 to a rotating drive member as illustrated 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 elastically deform 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 towards 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 distributed uniformly around the central portion 6.
  • the deformation portion 10 comprises an outer ring 18 and several connecting members 11.1.
  • the connecting members 11.1 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 connecting member 11.1 substantially forms a radius for the roller 1.
  • the roller 1 has recesses 11.2 located respectively between two consecutive connecting members 11.1.
  • Each recess 11.2 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.
  • the Figs. 6 and 7 illustrate a roller 1 according to a second embodiment.
  • the description of the roller 1 given above in relation to the Fig. 1 can be transposed to roller 1 of the Figs. 6 and 7 , with the exception of the notable differences mentioned below.
  • Pebble 1 of Figs. 6 and 7 differs from roller 1 of the Fig. 1 , because the deformation portion 10 has two notches 12, instead of six, which extend from the contact surface 2 towards the central portion 6.
  • the roller 1 of the Figs. 6 and 7 differs from roller 1 of the 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.
  • the Figs. 8 and 9 illustrate a roller 1 according to a third embodiment.
  • the description of the roller 1 given above in relation to the Fig. 1 can be transposed to roller 1 of the Figs. 8 and 9 , with the exception of the notable differences mentioned below.
  • Pebble 1 of Figs. 8 and 9 differs from roller 1 of the Fig. 1 , because each notch 12 is configured so that the intersection of this notch 12 with the contact surface 2 forms an oblique segment 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.
  • the Figs. 10 and 11 illustrate a roller 1 according to a fourth embodiment.
  • the description of the roller 1 given above in relation to the Fig. 1 can be transposed to roller 1 of the Figs. 10 and 11 , with the exception of the notable differences mentioned below.
  • Pebble 1 of Figs. 10 and 11 differs from roller 1 of the Fig. 1 , because each recess 11.2 has a rounded shape, to reduce mechanical stresses.
  • Each recess 11.2 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 key, not shown.
  • the groove 6.0 extends parallel to the axial direction X2.
  • the Figs. 12 and 13 illustrate a roller 1 according to a fifth embodiment.
  • the description of the roller 1 given above in relation to the Fig. 1 can be transposed to roller 1 of the Figs. 12 and 13 , with the exception of the notable differences mentioned below.
  • Pebble 1 of Figs. 12 and 13 differs from roller 1 of the Fig. 1 , because each connecting member 11.1 is formed by a respective leaf spring.
  • each recess 11.2 has a triangular shape pointing substantially towards the central portion 6.
  • the Figs. 14 to 16 illustrate a roller 1 according to a sixth embodiment.
  • Six notches 12 extend from the contact surface 2 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 straight segment and parallel to the axis of revolution X2 of the contact surface 2.
  • the description of the roller 1 given above in relation to the Fig. 1 can be transposed to roller 1 of the Figs. 14 to 16 , with the exception of the notable differences mentioned below.
  • Pebble 1 of Figs. 14 to 16 differs from roller 1 of the Fig. 1 , first of all because each recess 11.2 is found in the extension of each of the notches 12.
  • each recess 11.2 has an elongated 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 discs 19, mutually parallel, coaxial, and spaced apart 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 towards the central portion 6.
  • the notches 12 of the roller 1 are provided 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 disc 19 are offset from the notches of the disc immediately. adjacent.
  • the roller 1 of the seventh embodiment of the Fig. 17 differs from roller 1 of the Fig. 1 , because it is formed of six discs 19, mutually parallel, 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.
  • the Figs. 18 , 19 and 20 illustrate a transport device 100 according to the invention.
  • the transport device 100 is used to transport sheets 101 by friction, here cardboard sheets intended to compose foldable boxes.
  • the transport device 100 comprises a stop 102 and several pairs of rollers 1a and 1b, including idle rollers 1a and drive rollers 1b.
  • the rollers 1a and 1b are inclined in the direction of the stop 102, so as to guide, bring and 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 l main longitudinal axis for transporting the sheets.
  • the tangent to the contact surface 2 is oriented in the direction of the stop 102.
  • Each pair of rollers 1 comprises an upper roller 1a and a lower roller 1b, arranged face to face so as to pinch a sheet 101.
  • the rollers 1a and 1b are produced in a manner similar 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 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 respectively integral with the central portions of the rollers of each pair of rollers 1a and 1b, so that the rotational drive member can transmit torque at less 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)

Description

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 can for example be applied to the field of manufacturing foldable boxes from cardboard sheets, the roller then serving to guide each cardboard sheet. A collapsible box can for example be a packing carton. In general, such sheets of cardboard are moved along a production line. Furthermore, the present invention can be applied in other fields requiring the registration of objects in the form of sheet such as sheets, wooden planks, plastic plates etc.

Etat de la techniqueState 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.The document EP1837298 describes a transport device comprising several rollers for pushing sheets by friction. Each roller a) an outer surface in contact with the sheet, ii) a central bore for driving the roller in rotation, 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 grnd, 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 the EP1837298 is used to align a sheet that is slightly offset and / or tilted with respect to a fixed reference stopper (jogging), the alignment of the sheet is sensitive to the jogging angle set by the operator. But when the jogging angle is small, the correction of the sheet position is very slow. Conversely, when the jogging angle is large, the sheet is aligned faster, but the moment the sheet is pressed against the stopper, strong mechanical stresses are generated, which can cause sheet wrinkling or premature wear. pebble.

Le document JP2002370851 décrit un mécanisme de correction de repérage latéral pour des feuilles de papier mal alignées dans un photocopieur ou une imprimante suivant le préambule de la revendication 1. Le mécanisme comprend des rouleaux en forme de disques comprenant des seqments flexibles et configurés de fléchir axialement.The document JP2002370851 discloses a lateral registration correction mechanism for misaligned sheets of paper in a copier or printer according to the preamble of claim 1. The mechanism comprises disc-shaped rollers comprising flexible segments and configured to flex axially.

Exposé de l'inventionDisclosure of the invention

La présente invention a notamment pour but de résoudre, en tout ou partie, les problèmes mentionnés ci-avant.The object of the present invention is in particular to resolve, 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,
  • une portion centrale configurée pour relier mécaniquement le galet à un organe d'entraînement en rotation, et
  • 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.
For this purpose, the present invention relates to a roller for guiding a sheet by friction. The pebble presents:
  • 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, and
  • a deformation portion located between the contact surface and the central portion, the deformation portion being configured to elastically deform when the roller guides the sheet by friction.

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 deformation portion comprises at least one notch extending from the contact surface towards 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 notch defines on the roller one or more elastically deformable segments which can flex, in the axial direction, independently. Therefore, 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 makes it possible to release the stresses six times per revolution. Such a roller has lateral flexibility allowing the sheet to be aligned against a stop, so as to guarantee its registration 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 of the variants, the contact surface is a surface of the roller which is radially outermost, that is to say the furthest from the axis of revolution of the contact surface. According to one 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 include retaining members configured to retain the or each rotary bearing. In particular, the retaining members can be formed by a rolling cage.

Selon l'invention, le galet est caractérisé en ce que 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.According to the invention, the roller is characterized in that 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 of so as to interrupt the outer crown at least once.

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.Each connecting member extends at least in a radial direction. Each connecting member can also extend in another direction, for example in a tangential direction and / or in an axial direction.

Selon l'invention, le galet est caractérisé en ce que 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 the invention, the roller is characterized in that each connecting member substantially forms a radius for the roller. According to a variant, the roller has openings located 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 solid. In other words, the deformation portion continuously fills the space located 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 connecting members of the roller are formed by leaf springs.

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, several recesses each have a triangular shape pointing substantially towards the central portion. According to a variant, the recesses can be filled with a material more elastically deformable 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 has the overall shape of a cylinder. Thus, such a contact surface can have a large surface area in contact with the sheets. Alternatively to this embodiment, the contact surface has the overall 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 in 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, therefore to increase the jogging angle and align the guided sheet more quickly.

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 in the roller are distributed uniformly 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 distributed uniformly 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 easy to manufacture. It can for example be extruded or cut in 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 such 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 planar shape. Alternatively to this embodiment, at least one notch can 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 notches can comprise at least two disks. Thus, a roller divided into several discs offers even greater lateral flexibility. Indeed, the discs are added to the notches and define on the roller one or more elastically deformable segments which 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 disc roller has lateral flexibility, each disc flexing independently of each other. So this independence of deflection of the discs between them makes it possible to release too strong mechanical stresses, as soon as a disc segment, located between two notches, and elastically deformable is no longer in contact with the sheet. A disc roller allows transport and alignment of the sheet, regardless of the position of the sheet at the start.

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 yet another embodiment, the discs are coaxial, the discs are mutually parallel, the discs are of the same thickness, the discs are spaced apart 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 transporting sheets by friction, for example cardboard sheets intended to compose foldable boxes, the transport device comprising a stopper and several rollers as described and claimed, the rollers being inclined so as to guide and align each sheet against the stopper.

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 pinch 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 drive member can transmit 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 one variant, the transport device further comprises a rotational drive member secured to the central portion so that the rotational drive member can transmit 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 the variants mentioned above can be taken in isolation or in any technically possible combination.

Brève description des dessinsBrief 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:

  • 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;
  • la Figure 3 représente une vue latérale du galet des Figures 1 et 2;
  • la Figure 4 représente une vue en coupe selon le plan IV - IV du galet de la Figure 3;
  • la Figure 5 représente une vue similaire à la Figure 4 du galet de la Figure 4 équipé de roulements à billes;
  • 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;
  • 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;
  • les Figures 10 et 11 représentent respectivement une vue en perspective, et une vue latérale, d'un galet conforme à un quatrième mode de réalisation de l'invention;
  • la Figure 12 représente une vue en perspective d'un galet conforme à un cinquième mode de réalisation de l'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;
  • la Figure 15 représente une vue latérale du galet de la Figure 14;
  • la Figure 16 représente une vue en coupe, selon le plan XVI du galet de la Figure 14;
  • la Figure 17 représente une vue en coupe d'un galet conforme à un septième mode de réalisation de l'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;
  • la Figure 19 représente une vue latérale d'une paire de galets du dispositif de transport de la Figure 18; et
  • la Figure 20 représente une vue en coupe, selon le plan XX de la paire de galets de la Figure 19.
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 non-limiting example and made 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:
  • the Figures 1 and 2 respectively show a perspective view, from two different angles, of a roller according to a first embodiment of the invention;
  • the Figure 3 shows a side view of the Figures 1 and 2 ;
  • the Figure 4 represents a sectional view along the plane IV - IV of the roller of the Figure 3 ;
  • the Figure 5 represents a view similar to the Figure 4 the pebble of the Figure 4 equipped with ball bearings;
  • the 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;
  • the Figures 8 and 9 respectively show a perspective view, and a side view with transparency, of a roller according to a third embodiment of the invention;
  • the Figures 10 and 11 respectively show a perspective view and a side view of a roller according to a fourth embodiment of the invention;
  • the Figure 12 shows a perspective view of a roller according to a fifth embodiment of the invention;
  • the Figure 13 represents a sectional view, along the plane XIII of the pebble of the Figure 12 ;
  • the Figure 14 shows a partial perspective view of a roller according to a sixth embodiment of the invention, mounted in a transport device;
  • the Figure 15 shows a side view of the roller of the Figure 14 ;
  • the Figure 16 represents a sectional view, along the plane XVI of the roller of the Figure 14 ;
  • the Figure 17 shows a sectional view of a roller according to a seventh embodiment of the invention;
  • the Figure 18 shows a perspective view of a transport device according to the invention comprising several idle rollers and several drive rollers according to the invention;
  • the Figure 19 shows a side view of a pair of rollers of the transport device of the Figure 18 ; and
  • the Figure 20 represents a sectional view, along the plane XX of the pair of rollers of the Figure 19 .

Exposé détaillé de modes de réalisation préférésDetailed discussion 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.The 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 generally 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 radially outermost, 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 roller 1 when 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 :

  • un diamètre D2 environ égal à 60 mm,
  • une largeur W2 environ égale à 30 mm,
  • au moins une fente ayant un écartement W12 environ égal à 1 mm,
  • une dureté environ égale à 60 ShoreA, la dureté étant mesurée sur la surface de contact.
According to one variant, the roller is made at least partially of a flexible material, for example a polyurethane. As an exemplary embodiment, a roller according to the invention may have:
  • a diameter D2 approximately equal to 60 mm,
  • a width W2 approximately equal to 30 mm,
  • at least one slot having a spacing W12 approximately equal to 1 mm,
  • a hardness approximately equal to 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.The roller 1 has a central portion 6 which is configured to mechanically connect the roller 1 to a rotating drive member as illustrated in Figs. 13 to 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 deformation portion 10 which is located between the contact surface 2 and the central portion 6. The deformation portion 10 is configured to elastically deform 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 towards 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 distributed uniformly around the central portion 6.

La portion de déformation 10 comprend une couronne externe 18 et plusieurs membres de liaison 11.1. Les membres de liaison 11.1 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 several connecting members 11.1. The connecting members 11.1 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 11.1 forme sensiblement un rayon pour le galet 1. Le galet 1 a des évidements 11.2 situés respectivement entre deux membres de liaison consécutifs 11.1. Chaque évidement 11.2 a une forme triangulaire pointant sensiblement vers la portion centrale 6.Each connecting member 11.1 substantially forms a radius for the roller 1. The roller 1 has recesses 11.2 located respectively between two consecutive connecting members 11.1. Each recess 11.2 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.The Figs. 6 and 7 illustrate a roller 1 according to a second embodiment. Insofar as the roller 1 of the Figs. 6 and 7 is similar to roller 1 of the Fig. 1 , the description of the roller 1 given above in relation to the Fig. 1 can be transposed to roller 1 of the Figs. 6 and 7 , with the exception of the notable differences mentioned below. Pebble 1 of Figs. 6 and 7 differs from roller 1 of the Fig. 1 , because the deformation portion 10 has two notches 12, instead of six, which extend from the contact surface 2 towards the central portion 6. In addition, the roller 1 of the Figs. 6 and 7 differs from roller 1 of the 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.The Figs. 8 and 9 illustrate a roller 1 according to a third embodiment. Insofar as the roller 1 of the Figs. 8 and 9 is similar to roller 1 of the Fig. 1 , the description of the roller 1 given above in relation to the Fig. 1 can be transposed to roller 1 of the Figs. 8 and 9 , with the exception of the notable differences mentioned below. Pebble 1 of Figs. 8 and 9 differs from roller 1 of the Fig. 1 , because each notch 12 is configured so that the intersection of this notch 12 with the contact surface 2 forms an oblique segment 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 11 illustrent un galet 1 conforme à un quatrième mode de réalisation. Dans la mesure où le galet 1 des Figs. 10 et 11 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 11, à l'exception des différences notables mentionnées ci-après. Le galet 1 des Figs. 10 et 11 diffère du galet 1 de la Fig. 1, car chaque évidement 11.2 a une forme arrondie, pour réduire les contraintes mécaniques. Chaque évidement 11.2 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.The Figs. 10 and 11 illustrate a roller 1 according to a fourth embodiment. Insofar as the roller 1 of the Figs. 10 and 11 is similar to roller 1 of the Fig. 1 , the description of the roller 1 given above in relation to the Fig. 1 can be transposed to roller 1 of the Figs. 10 and 11 , with the exception of the notable differences mentioned below. Pebble 1 of Figs. 10 and 11 differs from roller 1 of the Fig. 1 , because each recess 11.2 has a rounded shape, to reduce mechanical stresses. Each recess 11.2 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 key, not shown. 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 11.1 est formé par une lame ressort respective. Par ailleurs, comme pour le galet 1 de la Fig. 1, chaque évidement 11.2 a une forme triangulaire pointant sensiblement vers la portion centrale 6.The Figs. 12 and 13 illustrate a roller 1 according to a fifth embodiment. Insofar as the roller 1 of the Figs. 12 and 13 is similar to roller 1 of the Fig. 1 , the description of the roller 1 given above in relation to the Fig. 1 can be transposed to roller 1 of the Figs. 12 and 13 , with the exception of the notable differences mentioned below. Pebble 1 of Figs. 12 and 13 differs from roller 1 of the Fig. 1 , because each connecting member 11.1 is formed by a respective leaf spring. Moreover, as for roller 1 of the Fig. 1 , each recess 11.2 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.The Figs. 14 to 16 illustrate a roller 1 according to a sixth embodiment. Six notches 12 extend from the contact surface 2 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 straight segment and parallel to the axis of revolution X2 of the contact surface 2. Insofar as the roller 1 of the Figs. 14 to 16 is similar to roller 1 of the Fig. 1 , the description of the roller 1 given above in relation to the Fig. 1 can be transposed to roller 1 of the Figs. 14 to 16 , with the exception of 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 11.2 se retrouve dans le prolongement de chacune des entailles 12. De plus, chaque évidement 11.2 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.Pebble 1 of Figs. 14 to 16 differs from roller 1 of the Fig. 1 , first of all because each recess 11.2 is found in the extension of each of the notches 12. In addition, each recess 11.2 has an elongated shape, pointing substantially towards the central portion 6, and having a spacing greater than the spacing W12 of the corresponding notch 12.

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.Furthermore, the roller 1 is formed with at least two discs 19, mutually parallel, coaxial, and spaced apart 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 towards the central portion 6. The notches 12 of the roller 1 are provided 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 discs 19 and six notches 12 on each of the four discs 19, the contact surface 2 comprises twenty-four elastically deformable segments 16. In this embodiment, the notches 12 of a disc 19 are offset from the notches of the disc 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 the Fig. 17 differs from roller 1 of the Fig. 1 , because it is formed of six discs 19, mutually parallel, 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 discs 19 and six notches 12 on each of the six discs 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.The Figs. 18 , 19 and 20 illustrate a transport device 100 according to the invention. The transport device 100 is used to transport sheets 101 by friction, here cardboard sheets intended to compose foldable boxes.

Le dispositif de transport 100 comprend une butée 102 et plusieurs paires de galets 1a et 1b, dont des galets fous 1a et des galets d'entraînement 1b. Les galets 1a et 1b 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 1a et 1b 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 idle rollers 1a and drive rollers 1b. The rollers 1a and 1b are inclined in the direction of the stop 102, so as to guide, bring and 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 l main longitudinal axis for transporting the sheets. The tangent to the contact surface 2 is oriented in the direction of the stop 102.

Chaque paire de galets 1 comprend un galet supérieur 1a et un galet inférieur 1b, agencés face à face de façon à pincer une feuille 101. Les galets 1a et 1b sont réalisés de manière analogue au galets 1 décrits ci-dessus. Le dispositif de transport 100 comprend en outre, pour les galets inférieurs 1b, 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.Each pair of rollers 1 comprises an upper roller 1a and a lower roller 1b, arranged face to face so as to pinch a sheet 101. The rollers 1a and 1b are produced in a manner similar 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 torque to the roller. 1 when the rotational drive member 104 is connected to an actuator.

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 1a et 1b, de sorte que l'organe d'entraînement en rotation peut transmettre un couple à moins un des galets 1 de chaque paire de galets 1a et 1b. Dans cet exemple de réalisation, l'organe d'entraînement peut comprendre une courroie 104. Les galets supérieurs 1a sont maintenus par un longeron supérieur 105. Les galets inférieurs 1b sont maintenus par un longeron inférieur 106.The transport device 100 further comprises rotational drive members which are respectively integral with the central portions of the rollers of each pair of rollers 1a and 1b, so that the rotational drive member can transmit torque at less one of the rollers 1 of each pair of rollers 1a and 1b. In this exemplary 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, d'autres modes de réalisation peuvent être envisagés sans sortir du cadre de l'invention, tel que définit par les revendications.The invention is not limited to the particular embodiments described, other embodiments can be envisaged without departing from the scope of the invention, as defined by the claims.

Claims (13)

  1. Roller for guiding a sheet (101) by friction, the roller (1) having:
    - a contact surface (2) intended to be in contact with the sheet (101), the contact surface (2) having overall a form of revolution when the roller (1) is at rest,
    - a central portion (6) configured to mechanically connect the roller (1) to a rotating drive member, and
    - 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, the deformation portion (10) comprises at least one cut (12) extending from the contact surface (2) towards the central portion (6), the cut (12) being arranged so that the deformation portion (10) comprises at least one elastically deformable segment (16), characterised in that the deformation portion comprises an outer ring (18) and a plurality of connection members (11.1) mechanically connecting the central portion (6) and the outer ring (18), and at least one cut extending through the outer ring so as to interrupt the outer ring at least once, and wherein each connection member (11.1) forms a spoke for the roller (1).
  2. Roller according to claim 1, wherein a plurality of connection members (11.1) are formed by spring blades.
  3. Roller according to claim 1 or 2, comprising recesses (11.2) situated respectively between two consecutive connection members (11.1).
  4. Roller according to one of the preceding claims, wherein the contact surface (2) has overall the form of a cylinder.
  5. Roller according to one of the preceding claims, wherein the number of cuts (12) is greater than or equal to two, for example equal to seven.
  6. Roller according to claim 5, wherein the cuts (12) are uniformly distributed around the central portion (6).
  7. Roller according to one of the preceding claims, wherein at least one cut (12) is configured so that the intersection of the cut (12) with the contact surface (2) forms a rectilinear segment parallel to the axis of revolution (X2) of the contact surface (2).
  8. Roller according to one of the preceding claims, wherein at least one cut (12) is configured so that the intersection of the cut (12) with the contact surface (2) forms a segment oblique to the axis of revolution (X2) of the contact surface (2).
  9. Roller according to claim 8, wherein at least one cut (12) extends parallel to a plane (P12) including the oblique segment.
  10. Roller according to one of the preceding claims, comprising at least two discs (19).
  11. Roller according to claim 10, wherein the discs (19) are coaxial, parallel to each other, with the same thickness, separated, and at equal distances from each other.
  12. Transport device, for transporting sheets (101) by friction, for example cardboard sheets intended to make up foldable boxes, the transport device (100) comprising a stop (102) and a plurality of rollers (1) according to one of the preceding claims, the rollers (1) being inclined so as to guide and align each sheet (101) against the stop (102).
  13. Device according to claim 12, comprising at least two pairs of rollers (1) according to one of claims 1 to 10, each pair of rollers including a top roller and a bottom roller arranged face to face so as to grip a sheet (101), the transport device (100) further comprising a rotating drive member secured to the central portion (6) of at least one of the rollers (1) of each pair of rollers (1), so that the member for driving in rotation 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)

Application Number Priority Date Filing Date Title
EP16020275 2016-07-19
PCT/EP2017/025200 WO2018015025A1 (en) 2016-07-19 2017-07-12 Guide roller and transport device comprising several rollers

Publications (2)

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EP3487798A1 EP3487798A1 (en) 2019-05-29
EP3487798B1 true EP3487798B1 (en) 2021-05-05

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EP17746394.0A Active EP3487798B1 (en) 2016-07-19 2017-07-12 Guiding roller and transport device comprising a plurality of rollers

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US (1) US11465869B2 (en)
EP (1) EP3487798B1 (en)
JP (1) JP6918918B2 (en)
KR (1) KR102149624B1 (en)
CN (1) CN109715539B (en)
BR (1) BR112019000992B1 (en)
CA (1) CA3031221C (en)
ES (1) ES2874303T3 (en)
TW (1) TWI639547B (en)
WO (1) WO2018015025A1 (en)

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KR102245464B1 (en) * 2019-06-05 2021-04-28 주식회사 보성산업롤 Modular Elastic Roll
KR102579993B1 (en) * 2020-03-11 2023-09-21 이상규 Elastic Roll

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EP3487798A1 (en) 2019-05-29
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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