EP3426583B1 - Dispositif de transport correctif linéaire de supports de bande - Google Patents

Dispositif de transport correctif linéaire de supports de bande Download PDF

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Publication number
EP3426583B1
EP3426583B1 EP17710471.8A EP17710471A EP3426583B1 EP 3426583 B1 EP3426583 B1 EP 3426583B1 EP 17710471 A EP17710471 A EP 17710471A EP 3426583 B1 EP3426583 B1 EP 3426583B1
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EP
European Patent Office
Prior art keywords
driving means
ribbon
shaped substrate
drive
displacement
Prior art date
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EP17710471.8A
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German (de)
English (en)
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EP3426583A1 (fr
Inventor
Jakob OBERERLACHER
Reinhard SCHNEEBERGER
Peter Weingartner
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Durst Austria GmbH
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Durst Austria GmbH
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Publication of EP3426583A1 publication Critical patent/EP3426583A1/fr
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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
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/002—Registering, e.g. orientating, articles; Devices therefor changing orientation of sheet by only controlling movement of the forwarding means, i.e. without the use of stop or register wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/14—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors by photoelectric feelers or detectors
    • 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
    • B65H2404/14—Roller pairs
    • B65H2404/142—Roller pairs arranged on movable frame
    • B65H2404/1424—Roller pairs arranged on movable frame moving in parallel to their 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
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/12—Width
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
    • B65H2553/41—Photoelectric detectors
    • B65H2553/416—Array arrangement, i.e. row of emitters or detectors

Definitions

  • the present invention relates to a device for the width-scalable alignment of sheet-shaped and / or plate-shaped media, each with a predetermined width, during transport. Due to the specified width, a corresponding medium is also referred to as a tape medium.
  • tape media such as paper sheets, wooden floorboards, ceramic tiles, laminate and / or plastic sheets.
  • the tape medium to be printed must be transported on a transport path to the printer, the correct orientation and position during printing being of great importance. This is particularly true when the tape media has to go through multiple printing passes, such as sometimes in multi-color printing.
  • other process steps such as cutting or punching also require exact positioning of the tape medium to be treated.
  • a corresponding tape medium Due to its sheet-like and / or plate-like shape, a corresponding tape medium has essentially two mutually parallel sides.
  • the side on which the tape medium rests is referred to as the rear side, the other side as the front side.
  • Such tape media such as sheets of paper to be printed or tiles to be printed, must in many applications be fed to a device which treats the surface of the front side of the tape medium, with the correct orientation and position of the tape medium having to be ensured during appropriate transport.
  • Orientation here means the angular alignment of the tape medium and position its position in three-dimensional space.
  • it is essentially a matter of the linear transport of the tape medium in a direction parallel to the sides of the medium and perpendicular to the specified width.
  • this direction will be referred to as the x-direction.
  • the direction which is defined by the normal to the front side of the tape medium is to be referred to in the following as the z-direction.
  • the direction which is orthogonal both to the x-direction and to the z-direction and by which a right-handed system is defined as the ordinate with the x-direction as the abscissa shall be referred to below as the y-direction.
  • the tape medium is guided over a support.
  • the origin of a Cartesian right-handed coordinate system is to be defined on this edition, with the x-axis pointing in the x-direction, the y-axis pointing in the y-direction and the z-axis pointing in the z-direction.
  • the angular alignment of the normal to the front side of the tape medium relative to the support (hereinafter referred to as the z-orientation) is given automatically and is therefore correct.
  • the position in the z direction In contrast, the orientation of the medium in the xy plane (hereinafter referred to as xy orientation) is only correct if the positions in which the edges of the medium meet the yz plane spanned by the y axis and z axis during transport cut, always stay the same.
  • This x-y orientation usually has to be monitored and corrected if necessary. And even with the correct x-y orientation, it must be ensured that the correct y position is assumed and maintained, i.e. the edges of the tape media should intersect the y-z plane at the desired locations.
  • Corrective transport or corrective transport is hereinafter referred to as a linear transport of a tape medium along an x-direction, the positions in which the edges of the medium intersect the yz-plane spanned by the y-axis and z-axis are the desired during transport Positions are (correct y-position) and should always remain the same and, in the event of deviations, the xy-orientation and possibly the y-position are corrected.
  • a feed table is shown on which a pulling mechanism and two endless conveyor belts are arranged.
  • the conveyor belts are each driven by separately controllable drives, so that the sheet of paper can be shifted at different drive speeds of the drives.
  • the feed table includes a sensor for each conveyor belt with which the position of the sheet is determined.
  • the investor table according to the DE 10214531 A1 however, it is only designed for one width of the paper sheet.
  • a much finer control of the speed differences is also necessary here, since even small differences lead to large corrections at the edge of the tape medium.
  • the WO 2010/034540 A1 discloses an apparatus for linear corrective transport of tape media having a receptacle for receiving at least one tape media and having a first drive means and a second drive means.
  • the first and second drive means are designed to work together for the transport of the tape medium in the x-direction such that the first drive means can engage in the area of one edge of the tape medium and the second drive means can be effective in the area of the other edge of the tape medium.
  • These two drive means are controllable in such a way that they can drive the respectively assigned edge area of the tape medium with adjustable different drive speeds, with at least the first drive means being arranged in the device via a first displacement device in such a way that a guided one essentially limited to the y-direction Displacement of the first drive means is made possible relative to the recording.
  • the JP 2007186291 A1 discloses either two fixed drive modules each with three height-adjustable rollers or two displaceable drive modules each with a single drive means, the rollers not being height-adjustable.
  • a device loaded with a tape medium accordingly has, in the area of one edge of the tape medium, a first drive means for advancing the tape medium in the x-direction, and at the other edge of the tape medium it has a second drive means for advancing the tape medium in the x-direction, which cooperates with the first drive means, at least one of the drive means so on Device is arranged that a limited to the y-direction guided displacement is enabled, so that by moving the at least one drive means in the y-direction, the effective width of the two cooperating drive means can be adapted to the width of the tape medium and first and second drive means adjustable different drive speeds can be driven, so that a correction of the xy-orientation of the tape medium can take place.
  • the device comprises four drive means, which can each be controlled so that they can drive tape media in the x-direction adjustable at different speeds, the four drive means being individually height-adjustable in the z-direction and the four drive means having two drive modules each with two drive means fixed distance D from one another, based on the y-direction, with one of the two drive modules being arranged on the first displacement device, so that for large-format tape media its position can be selected so that a drive means of one drive module forms the first drive means and a Drive means of the second drive module forms the second drive means, while for small-format tape media a drive means of the drive module on the first displacement device forms the first drive means and the other drive means of the same drive module on the first displacement device direction forms the second drive means.
  • the inventive device is a device for the linear corrective transport of tape media with a receptacle for receiving at least one tape medium and with a first drive means and a second drive means, the first and second drive means being designed to work together for transporting the tape medium in the x direction are such that the first drive means engaging in the area of one edge of the tape medium and the second drive means engaging in the area of the other edge of the tape medium, both drive means being controllable in such a way that they can set the respectively assigned edge region of the tape medium with different drive speeds can drive, wherein at least the first drive means is arranged via a first displacement device in the device that a guided displacement of the first drive means is limited essentially to the y-direction relative to the recording is enabled.
  • the device according to the invention is characterized in that the device comprises four drive means, which are each controllable so that they can drive tape media in the x-direction adjustable at different speeds, the four drive means being individually height-adjustable in the z-direction and the four drive means form two drive modules, each with two drive means at a fixed distance D from one another, based on the y-direction, one of the two drive modules being arranged on the first displacement device so that its position can be selected for large-format tape media that a drive means of the one drive module forms the first drive means and a drive means of the second drive module forms the second drive means, while for small-format tape media a drive means of the drive module on the first displacement device forms the first drive means and the other drive means of the same drive module on the first displacement device forms the second drive means forms.
  • the first drive means and the second drive means are arranged in the first and / or a second shifting device in such a way that they form a first pair of drives which can be shifted in the y-direction while maintaining the distance between the two drive means, in particular also during the advance of the tape medium in the x direction.
  • the first displacement device can in particular be designed in such a way that the distance between the first drive means and the second drive means can be selectively adjusted in relation to the y-direction.
  • the described device with two drive modules can comprise a second displacement device, so that a drive module is arranged on a respective displacement device.
  • First and second displacement devices can be configured such that both drive modules can be displaced synchronously and in the y-direction while maintaining the distance between the drive modules in the y-direction. In this way, an efficient correction of the y-position of the tape medium can accordingly be carried out At this point, however, it should be pointed out that a correction of the y-position of the tape medium during the x-advance can also be achieved by a skillful sequence of speed differences. For example, if one drive means in one edge area of the tape medium runs more slowly for a short time than the other drive means in the other edge area of the tape medium, the xy orientation of the tape medium is changed.
  • the speed are now interchanged, that is, the one previously slower drive means in one edge area of the tape medium briefly runs faster than the other previously faster drive means in the other edge area of the tape medium, you get back to the original xy orientation, although a y offset the y-position of the tape medium results.
  • the possibility of being able to move the second drive means could be dispensed with entirely.
  • the device could therefore be manufactured more cheaply.
  • the possibility of synchronous displacement of the first and second drive means is to be preferred, however, since it can be carried out more easily and without any x-feed.
  • Figure 1a shows a device 101 according to the invention, loaded with a large-format tape medium 107.
  • the device comprises a support 103 on which the large-format tape medium 107 can be placed.
  • the device further comprises four drive means 105, 105 ', 105 "and 105"' which in the example are designed as roller drives.
  • the rotation speed of all four drive means can be set individually for each drive means.
  • the z-axis and the y-axis are also shown in the figure. The x-axis would be pushed out of the image plane, ie tape media are transported in the direction out of the image plane by means of the device.
  • the roller drives 105 ′′ and 105 ′ ′′ have a fixed distance, but can be displaced along the y direction together with a first displacement device 109.
  • the two roller drives 105 ′′, 105 ′ ′′ together form a drive module which is arranged on the first displacement device 109.
  • This also includes the counter rollers 115 ′′ and 115 ′ ′′ which are also arranged on the first displacement device 109 and are therefore also displaced synchronously with the drive module if necessary.
  • roller drives 105 and 105 ' have a fixed distance from one another, but can be moved together along the y-direction by means of a second displacement device 111.
  • the two roller drives 105, 105 ′ together form a further drive module which is arranged on the second displacement device 111.
  • This also includes the counter rollers 115 and 115 ', which are also arranged on the second displacement device 111 and, if necessary, are also displaced synchronously with the further drive module.
  • First and second displacement devices 109, 111 can be coupled to one another in such a way that both drive modules can be displaced, for example, synchronously, in the same direction, at the same speed and by the same amount along the y-direction.
  • roller drive 105 in the edge region of the tape medium on this is offset and this clamps together with the underlying counter roller 115 so to speak.
  • the roller drive 105 is set in the z-direction to the thickness of the tape medium and the contact pressure of the rollers is regulated, for example, by means of a proportional valve.
  • the counter roller 115 can be stowed in the support with a separate guide.
  • the counter roller 115 can be driven by means of a spindle that is coupled to the motor of the roller drive 105.
  • the roller drive 105 ' is raised, ie moved away from the tape medium in the z-direction.
  • the roller drive 105 'could also rest on the tape medium and run along without force.
  • roller drive 105 "'is set to the thickness of the tape medium and clamps the tape medium together with the counter roller 115'" positioned below the roller drive.
  • roller drive 105 ′′ has moved away from the surface of the tape medium in the z-direction and does not act on it. Again, a roller drive 105 ′′ that is then resting on it can run along without force.
  • the position of the tape medium can be changed in a targeted manner when the two drive modules are shifted synchronously along the y-direction.
  • the tape medium can be aligned on the right, left and both sides.
  • roller drive and counter roller Since the speed of rotation of the roller drives 105 and 105 '' 'can be individually set independently of one another, the xy orientation can be changed in a simple and targeted manner by small speed differences between the two roller drives.
  • the combination of roller drive and counter roller has the particular advantage that this do not act flat but essentially punctiform or linear, whereby the change of the xy-orientation is simplified again compared to the state of the art realized by means of endless conveyor belts, since when using conveyor belts the belt medium rests flatly on them.
  • the device can comprise one or more laser measuring systems.
  • the roller drives align the medium with different feed speeds (roller speeds) as described and convey the medium in the x-direction.
  • the position of the tape medium in the y-direction is also determined with one of the measuring devices 117, 117 'and with the help of the synchronous displacement of the drive modules, the tape medium is moved in the y-direction into the desired y-position brought.
  • the print medium must be positioned between the transmitter and receiver of the laser micrometer and within the measuring range (here in the example: 28mm) with the feeder or manually for this measuring system to be successful can measure.
  • the tape medium is roughly aligned (for example against front and lateral reference elements).
  • Figure 1b shows the corresponding situation for a medium-sized tape medium.
  • the drive module coupled to it has now been shifted in the y-direction by means of the first shifting device 109 such that the distance between the drive modules is adapted to the width of the current tape medium.
  • the original position of the moved work module is in the Figure 1b still shown in dashed lines.
  • Figure 1c shows the situation when very narrow tape media 107 ", 107"'are to be transported correctively.
  • the two roller drives 105 and 105 ' take over the drive of the narrow tape medium 107 ".
  • the fixed distance D of the roller drives 105 and 105' from one another is adapted to the tape medium with the smallest width that is supposed to be used.
  • the corresponding drive module is adjusted by means of the second displacement device 111 displaceable and the two roller drives 105 and 105 'can be operated at different speeds. With the former it is possible to correct the y-position, with the latter it is possible to correct the xy-orientation.
  • a supply of paper sheets is brought up to the feed device, for example by means of a euro pallet and an ant, and brought in the z-direction to the level of the transport table of the feed device.
  • the vacuum gripper now pulls the top sheet of paper onto the transport table of the feeding device.
  • This is equipped with endless conveyor belts which, after the paper sheet has been released by the gripper by switching off the vacuum, push it to the device according to the invention for corrective transport.
  • the sheet of paper comes into the range of action of the first drive means at its one edge and the second drive means at its other edge.
  • the position of the edge and the xy orientation are measured using the laser measuring system.
  • a well-adjusted CCD matrix is used as the sensor of the laser measuring system. If there is no sheet of paper in the device, the matrix is fully illuminated, ie light from the laser reaches each pixel. If the edge of a sheet of paper comes into the effective area of the CCD matrix, no light will arrive where it is covered by the paper. In the edge area there are pixels that receive light next to pixels that do not receive light. Both the y-position and the xy-orientation of the paper sheet can thus be determined in a simple manner.
  • the target position and target orientation of the edge are stored in an evaluation unit so that an actual-target comparison can be carried out. If the y position is not correct, it is corrected to the desired value by moving the first and second drive means together. If the xy orientation is not correct, it can be corrected by means of different speeds of the drive means. Correspondingly, the drive means and the displacement units are controlled by a control which processes the result of the actual / target comparison.

Landscapes

  • Registering Or Overturning Sheets (AREA)
  • Handling Of Sheets (AREA)

Claims (8)

  1. Dispositif (101) de transport correcteur linéaire de substrats de ruban avec un support (103) pour accueillir au moins un substrat de ruban et avec un premier moyen d'entraînement (105"') et un second moyen d'entraînement (105), les premier et second moyens d'entraînement (105, 105"') étant conçus de manière coopérante pour le transport du substrat de ruban dans la direction x de telle manière que le premier moyen d'entraînement (105"') peut devenir efficace en s'engageant dans la zone de l'un bord du substrat de ruban et le second moyen d'entraînement (105) peut devenir efficace en s'engageant dans la zone de l'autre bord du substrat de ruban, les deux moyens d'entraînement (105, 105"') pouvant être commandés de telle manière qu'ils peuvent entraîner la zone de bordure respective du support de ruban à des vitesses d'entraînement différentes réglables, du moins le premier moyen d'entraînement (105"') étant disposé dans le dispositif via un premier dispositif de déplacement (109) de sorte qu'un déplacement guidé et essentiellement limité à la direction y du premier moyen d'entraînement (105"') par rapport au support (103) est possible, caractérisé en ce que le dispositif (101) comprend quatre moyens d'entraînement (105, 105', 105", 105"'), chacun d'eux pouvant être commandé de manière à pouvoir entraîner les supports de ruban dans la direction x à des vitesses différentes réglables et chacun des quatre moyens d'entraînement (105, 105', 105", 105"') est individuellement réglable en hauteur dans la direction z et les quatre moyens d'entraînement (105, 105', 105", 105"') forment deux modules d'entraînement, chacun ayant deux moyens d'entraînement (105 & 105', 105" & 105"') à une distance fixe D l'un de l'autre, par rapport à la direction y, l'un des deux modules d'entraînement étant disposé sur le premier dispositif de déplacement (109) de sorte que pour les supports de ruban en grand format sa position peut être choisie de telle manière qu'un moyen d'entraînement (105) de l'un module d'entraînement forme le premier moyen d'entraînement et un moyen d'entraînement (105"') du second module d'entraînement forme le second moyen d'entraînement, tandis que pour les supports de ruban de petit format un moyen d'entraînement (105") du module d'entraînement sur le premier dispositif de déplacement (109) forme le premier moyen d'entraînement et l'autre moyen d'entraînement (105"') de ce module d'entraînement sur le premier dispositif de déplacement (109) forme le second moyen d'entraînement.
  2. Dispositif selon la revendication 1, caractérisé en ce que le premier moyen d'entraînement (105"') et le second moyen d'entraînement (105) sont disposés sur le premier dispositif de déplacement (109) et/ou un second dispositif de déplacement (111) de manière à former une première paire d'entraînement qui peut être déplacée dans la direction y tout en maintenant la distance entre les deux moyens d'entraînement (105, 105"'), et en particulier également lors de l'avance du substrat de ruban dans la direction x.
  3. Dispositif selon l'une des revendications 1 et 2, caractérisé en ce que le premier dispositif de déplacement (109) est conçu de telle sorte que la distance entre le premier moyen d'entraînement (105"') et le second moyen d'entraînement (105) peut être sélectionné et réglé par rapport à la direction y.
  4. Dispositif (101) selon l'une des revendications 1 à 3, caractérisé en ce que le dispositif (101) comprend un second dispositif de déplacement (111), l'autre des deux modules d'entraînement étant disposé sur le second dispositif de déplacement (111).
  5. Dispositif (101) selon la revendication 4, caractérisé en ce que les dispositifs de déplacement (109, 111) sont conçus de telle manière que les deux modules d'entraînement peuvent être déplacés de manière synchrone et dans la direction y tout en maintenant la distance entre les modules d'entraînement dans la direction y.
  6. Procédé de transport correcteur d'un substrat de ruban ayant un dispositif selon la revendication 5 et comprenant les étapes suivantes:
    - introduire le côté frontal du substrat de ruban dans la zone efficace du premier moyen d'entraînement et du second moyen d'entraînement
    - mesurer la position y et l'orientation x-y du substrat de ruban au moyen de la zone de bordure et effectuer une comparaison entre l'état actuel et l'état souhaité
    - transporter le substrat de ruban dans la direction x par entraînement au moyen des premier et second moyens d'entraînement
    - minimiser l'écart de l'orientation x-y de la valeur souhaité en contrôlant la différence entre la vitesse d'entraînement du premier moyen d'entraînement et celle du second moyen d'entraînement, l'écart de la position y du substrat de ruban de la valeur souhaitée étant minimisé par un déplacement équivalent synchrone dans la direction y des deux moyens d'entraînement qui transportent le substrat de ruban.
  7. Procédé selon la revendication 6, caractérisé en ce que, avant l'insertion du substrat de ruban dans la zone efficace des deux moyens d'entraînement, la distance des moyens d'entraînement dans la direction y est ajustée de telle manière qu'après l'insertion du substrat de ruban dans la zone efficace des deux moyens d'entraînement, chacun d'eux agit dans une zone de bordure des deux bords du substrat de ruban.
  8. Imprimante ayant un dispositif d'amenée pour des substrats de ruban, le dispositif d'amenée comprenant un grappin pour saisir un substrat de ruban d'une pile et le dispositif d'amenée comprenant un dispositif de transport pour prendre le substrat de ruban du grappin et pour le passer à un dispositif de transport correcteur, qui est conçu et capable d'amener le substrat de ruban dans la bonne position y et la bonne orientation xy aux unités d'impression prévues dans l'imprimante, caractérisé en ce que le dispositif de transport correcteur est un dispositif selon l'une des revendications 1 à 5.
EP17710471.8A 2016-03-06 2017-02-20 Dispositif de transport correctif linéaire de supports de bande Active EP3426583B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016002601.4A DE102016002601A1 (de) 2016-03-06 2016-03-06 Vorrichtung zum linearen korrigierenden Transport von Bandmedien
PCT/EP2017/000217 WO2017153035A1 (fr) 2016-03-06 2017-02-20 Dispositif de transport correctif linéaire de supports de bande

Publications (2)

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EP3426583A1 EP3426583A1 (fr) 2019-01-16
EP3426583B1 true EP3426583B1 (fr) 2020-11-04

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EP17710471.8A Active EP3426583B1 (fr) 2016-03-06 2017-02-20 Dispositif de transport correctif linéaire de supports de bande

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US (1) US11001465B2 (fr)
EP (1) EP3426583B1 (fr)
DE (1) DE102016002601A1 (fr)
ES (1) ES2847157T3 (fr)
WO (1) WO2017153035A1 (fr)

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CN110780772B (zh) * 2019-10-25 2022-05-17 Oppo（重庆）智能科技有限公司 电子设备屏幕校准装置

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EP3426583A1 (fr) 2019-01-16
WO2017153035A1 (fr) 2017-09-14
US11001465B2 (en) 2021-05-11
ES2847157T3 (es) 2021-08-02
US20190055100A1 (en) 2019-02-21
DE102016002601A1 (de) 2017-09-21

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