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EP3694799B1 - Dispositif d'orientation de feuille, machine pour le traitement d'une feuille ainsi que procédé pour l'orientation d'une feuille - Google Patents

Dispositif d'orientation de feuille, machine pour le traitement d'une feuille ainsi que procédé pour l'orientation d'une feuille Download PDF

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Publication number
EP3694799B1
EP3694799B1 EP18786677.7A EP18786677A EP3694799B1 EP 3694799 B1 EP3694799 B1 EP 3694799B1 EP 18786677 A EP18786677 A EP 18786677A EP 3694799 B1 EP3694799 B1 EP 3694799B1
Authority
EP
European Patent Office
Prior art keywords
sheet
orientation
alignment
roller
sheets
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
EP18786677.7A
Other languages
German (de)
English (en)
Other versions
EP3694799A1 (fr
Inventor
Stefan Wick
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 Grenchen AG
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 Grenchen AG filed Critical Bobst Grenchen AG
Publication of EP3694799A1 publication Critical patent/EP3694799A1/fr
Application granted granted Critical
Publication of EP3694799B1 publication Critical patent/EP3694799B1/fr
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
    • 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
    • B65H7/06—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 responsive to presence of faulty articles or incorrect separation or feed
    • B65H7/08—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 responsive to presence of faulty articles or incorrect separation or feed responsive to incorrect front register
    • 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
    • B65H2404/15—Roller assembly, particular roller arrangement
    • B65H2404/152—Arrangement of roller on a movable frame
    • B65H2404/1521—Arrangement of roller on a movable frame rotating, pivoting or oscillating around an axis, e.g. parallel to the roller axis
    • B65H2404/15212—Arrangement of roller on a movable frame rotating, pivoting or oscillating around an axis, e.g. parallel to the roller axis rotating, pivoting or oscillating around an axis perpendicular to the roller 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
    • B65H2511/20—Location in space
    • B65H2511/21—Angle
    • B65H2511/216—Orientation, e.g. with respect to direction of movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/50—Timing
    • B65H2513/52—Age; Duration; Life time or chronology of event
    • 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
    • B65H2701/13—Parts concerned of the handled material
    • B65H2701/131—Edges
    • B65H2701/1311—Edges leading edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Definitions

  • the invention relates to a sheet alignment device for a machine for processing sheets made of a thin, flat material such as paper, cardboard or film, and a machine for processing such a sheet and a method for aligning such a sheet.
  • the machine may be a laminating machine that applies a coating material, such as a plastic film, to a substrate and firmly bonds the two together.
  • the machine can also be a machine for producing corrugated board, for example.
  • other application examples are also conceivable.
  • a sheet to be processed is taken from a stack of sheets by a sheet feeder and fed to a feed path. Each sheet is then transported along the feed path to the point where it is laminated together with another sheet, for example.
  • the transport along the feed line can be done by rollers, conveyor belts, etc.
  • the object of the invention is to be able to correct any alignment of a sheet that is being transported along the feed path with as little effort as possible.
  • a sheet alignment device for a machine for processing sheets made of a thin, flat material such as paper, cardboard or film, with a feed section, at least one sensor for detecting the position and/or alignment of the sheet and at least two aligning modules, each having an aligning roller, each of which is assigned a drive device, with each aligning module being assigned a pivoting device with which the aligning roller can be pivoted about a pivot axis perpendicular to the feed path, and the distance between the aligning modules being adjustable.
  • the invention is based on the idea of controlling not only the speed of the alignment rollers appropriately, but also the
  • the sensor preferably comprises two position sensors upstream of the alignment modules, with which the leading edge of a sheet moving along the feed path can be detected. From the time lag with which the leading edge of the sheet is detected by the two position sensors, it is possible to very precisely calculate the angle by which the sheet alignment has to be corrected.
  • the sensor preferably comprises an alignment sensor, with which a side edge and/or an alignment of the sheet can be detected.
  • the lateral offset of the sheet that is transported on the feed line can be detected with the alignment sensor.
  • the side edge in the area of the front edge of the sheet is preferably detected, ie one of the front corners of the sheet.
  • the alignment roller preferably interacts with a counter roller so that friction is reduced.
  • a pressure module is preferably provided, with which the counter-roller is loaded against the alignment roller.
  • the pressure module ensures that the frictional forces required to align the sheet act between the alignment roller and the sheet.
  • the pressure module can have a pneumatic cylinder, an eccentric, an electric motor or a lifting magnet in order to pressurize the counter-roller against the alignment roller in the desired manner.
  • the counter-roller is briefly moved away from the pressure roller when the leading edge of a sheet reaches the aligning roller, and is then pressed against the aligning roller again. This ensures that the position of a sheet does not change when the sheet is caught by the registration roller.
  • the distance between the alignment modules is adjustable so that the sheet alignment device can be adapted to sheets with different dimensions.
  • the machine for processing the sheets preferably comprises a handling line for a substrate, with the sheet alignment device feeding the sheet to the handling line.
  • the sheet alignment device is preferably used to synchronize the sheet to be aligned with the substrate, ie to ensure through suitable acceleration or deceleration that the front edge of a sheet comes together with the front edge of the associated substrate.
  • the machine and in particular the sheet aligner, can process sheets having a thickness of 0.1 to 1.2 mm.
  • the sheets can have a grammage of 90 to 500 g/m 2 and a size with a width of 400 to 1,650 mm and a length of 400 to 2,050 mm.
  • a method for aligning a sheet of thin, flat material such as paper, cardboard or film is also provided to solve the above-mentioned problem, the alignment of the sheet being recorded in a first step and the sheet being recorded in a second step by means of at least two peripheral speed sensors and accelerated, rotated and/or alignment of controllable alignment rollers on a feed line is shifted sideways.
  • FIG 1 a machine 1 for processing sheets of a thin, flat material such as paper, cardboard or foil is shown.
  • the sheets are provided in the form of a stack 2, from where they are fed to a feed section 4 by means of a sheet feeder 3.
  • a sheet B can be seen here on the feed path 4 .
  • a sheet alignment device 5 is integrated into the feed section 4, by means of which the alignment of the sheets B fed via the feed section 4 can be corrected.
  • the sheets B are then brought together with a substrate S in order to be glued or laminated together with this, for example.
  • the substrate sheets S are taken from a stack 6 .
  • the sheet alignment device comprises two alignment modules 10 (see in particular Figures 2 to 4 ), each of which has an alignment roller 12 as an essential component.
  • Each of the registration rollers 12 is intended to interact with the surface of a sheet to be registered.
  • the alignment roller has a material that is characterized by a coefficient of friction.
  • the alignment roller 12 can be made of rubber, for example.
  • Each alignment module 10 has a drive device 14 with which the rotational speed of the corresponding alignment roller 12 can be controlled.
  • the drive device 14 can in particular contain an electric motor.
  • Each alignment module 10 also has a pivoting device 16 with which the alignment roller 12 can be pivoted about a pivot axis A (see also the arrow P in figure 2 ).
  • the pivot axis A is perpendicular to the plane along which the sheets B are transported through the sheet aligning device 5 .
  • Each aligning roller 12 interacts with a counter-roller 20 so that the sheets B can be moved through between the aligning roller 12 and the counter-roller 20 .
  • Each counter-roller 20 is assigned a pressure module 22 with which the pressure force with which the counter-roller 20 is applied against the alignment roller 12 can be controlled. Furthermore, the counter-roller 20 can be briefly moved away from the alignment roller 12 by means of the pressure module, so that a sheet can be "threaded" into the gap between the alignment roller 12 and counter-roller 20 without the front edge of the sheet being braked.
  • the orientation of the axis of rotation of the counter rollers 20 is not adjustable; the pivot axis always remains perpendicular to the direction along which the sheets are transported.
  • the counter-rollers 20 At least on their peripheral surface, the counter-rollers 20 have a material that has a low coefficient of friction. Accordingly, the movement of an arc in the field of interaction between a Alignment roller 12 and counter-roller 20 of the peripheral speed and alignment of the corresponding alignment roller 12.
  • the sheet aligning device 5 also has sensors for detecting the position and the alignment of the sheets B.
  • two position sensors 30 are shown, which are arranged upstream of the two alignment modules 10 .
  • the two position sensors 30 are "level" so that they will simultaneously sense the leading edge of a sheet B when properly aligned.
  • the two position sensors 30 are arranged at such a distance on either side of a central plane of the sheet alignment device 5 that they can detect the leading edge of a sheet even with maximum lateral offset.
  • the detection accuracy it is desirable for the detection accuracy to choose the distance between the position sensors as large as possible. However, in order to also be able to detect smaller sheets, the distance between the position sensors can be adjusted.
  • the sheet alignment device 5 also has an alignment sensor 32 which is arranged laterally. This is used to detect a side edge of a transported sheet B, particularly in the area of the transition to the front edge. If the orientation of the leading edge is known together with the position of the side edge, for example at the transition to the leading edge, it is not only possible to calculate whether and, if so, how much a sheet B is twisted relative to the correct orientation, but also how far it is offset laterally.
  • a controller calculates how the orientation and/or position of each individual sheet must be corrected so that it can be brought together with the substrate S in the desired manner.
  • a sheet B is shown schematically, which is transported in the transport direction T along the sheet alignment device 5 and is correctly aligned there.
  • the arc B is in the initial state rotated clockwise from its correct orientation.
  • the two alignment modules 10 are therefore controlled in such a way that the sheet B, when the alignment rollers 12 interact with it, transport it slightly faster on the left side than on the right side, so that the sheet B finally when it is downstream of the alignment modules 10 , has its correct orientation (see arc B, again shown in solid lines, downstream of the alignment rollers 12).
  • the higher speed of the left registration roller is 12 in figure 5 represented by a longer speed arrow.
  • the alignment rollers 12 will rotate at such a speed that the peripheral speed of the alignment rollers corresponds to the transport speed of the sheet. Only when the sheet has been completely grasped by the two alignment modules 10 is the (based on figure 5 ) Left alignment roller 12 is briefly brought to a higher peripheral speed, so that the necessary correction of the alignment of the sheet B takes place. When the sheet B leaves the registration rollers 12, these rotate again at a speed which corresponds to the transport speed of the sheet B.
  • the alignment modules 10 can also be used to synchronize the sheet with the substrate S to which it is to be fed.
  • the sheet B can thus be accelerated or decelerated as a whole, so that the front edge of the sheet B meets the front edge of the substrate S exactly.
  • the alignment rollers 12 are aligned in the transport direction of the sheet B when the front edge of the sheet B enters the gap between the alignment rollers and the counter-rollers only then be panned appropriately for a short time. Before the trailing edge of the sheet leaves the alignment module 10, the alignment rollers 12 are pivoted again by the pivoting device 14 such that the axis of rotation of the alignment rollers 14 is perpendicular to the longitudinal direction of the sheet alignment device and to the transport direction T.
  • FIG 7 an example is shown where the arc B is both twisted and laterally offset. Accordingly, the alignment rollers 12 are both pivoted to compensate for the lateral offset and suitably driven at different speeds to compensate for the twist.

Landscapes

  • Registering Or Overturning Sheets (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)

Claims (11)

  1. Dispositif d'orientation de feuille (5) pour une machine de traitement de feuilles (B) constituées d'un matériau mince et plat tel que du papier, du carton ou un film, avec une section d'amenée, au moins un capteur (30, 32) pour détecter la position et/ou l'orientation de la feuille (B) et au moins deux modules d'orientation (10), qui présentent respectivement un rouleau d'orientation (12), qui est respectivement associé à un dispositif d'entraînement (14), dans lequel chaque module d'orientation (10) est associé à un dispositif de pivotement (16) à l'aide duquel le rouleau d'orientation (10) peut être pivoté autour d'un axe de pivotement (A) perpendiculaire à la section d'amenée, caractérisé en ce que la distance entre les modules d'orientation (10) peut être réglée.
  2. Dispositif d'orientation de feuille (5) selon la revendication 1, caractérisé en ce que le capteur comprend deux capteurs de position (30) en amont des modules d'orientation (10), à l'aide desquels le bord avant d'une feuille (B) déplacée le long de la section d'amenée peut être détecté.
  3. Dispositif d'orientation de feuille (5) selon l'une quelconque des revendications précédentes, caractérisé en ce que le capteur comprend un capteur d'orientation (32) à l'aide duquel un bord latéral et/ou une orientation de la feuille (B) peut être détecté(e).
  4. Dispositif d'orientation de feuille (5) selon l'une quelconque des revendications précédentes, caractérisé en ce que le rouleau d'orientation (12) coopère avec un rouleau antagoniste (20).
  5. Dispositif d'orientation de feuille (5) selon la revendication 4, caractérisé en ce qu'un module de pression (22) est prévu, à l'aide duquel le rouleau antagoniste (20) est appliqué contre le rouleau d'orientation (12).
  6. Dispositif d'orientation de feuilles (5) selon la revendication 5, caractérisé en ce que le module de pression (22) présente un vérin pneumatique, un excentrique, un moteur électrique ou un aimant de levage.
  7. Machine pour le traitement de feuilles (B) d'un matériau mince et plat tel que du papier, du carton ou un film, dans laquelle un dispositif d'orientation de feuille (5) selon l'une quelconque des revendications précédentes est prévu.
  8. Machine selon la revendication 7, caractérisée en ce qu'elle comprend une section de manipulation pour un substrat (S), dans laquelle le dispositif d'orientation de feuille (5) amène la feuille (B) à la section de manipulation.
  9. Machine selon l'une quelconque des revendications 7 et 8, caractérisée en ce que les feuilles (B) présentent une épaisseur comprise entre 0,1 et 1,2 mm.
  10. Machine selon l'une quelconque des revendications 7 à 9, caractérisée en ce que les feuilles (B) présentent un grammage de 90 à 500 g/m2.
  11. Machine selon l'une quelconque des revendications 7 à 10, caractérisée en ce que les feuilles (B) présentent une taille avec une largeur de 400 à 1650 mm et une longueur de 400 à 2050 mm.
EP18786677.7A 2017-10-10 2018-10-09 Dispositif d'orientation de feuille, machine pour le traitement d'une feuille ainsi que procédé pour l'orientation d'une feuille Active EP3694799B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017123521 2017-10-10
PCT/EP2018/025263 WO2019072416A1 (fr) 2017-10-10 2018-10-09 Dispositif d'orientation de feuille, machine pour le traitement d'une feuille ainsi que procédé pour l'orientation d'une feuille

Publications (2)

Publication Number Publication Date
EP3694799A1 EP3694799A1 (fr) 2020-08-19
EP3694799B1 true EP3694799B1 (fr) 2023-04-26

Family

ID=63862090

Family Applications (1)

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EP18786677.7A Active EP3694799B1 (fr) 2017-10-10 2018-10-09 Dispositif d'orientation de feuille, machine pour le traitement d'une feuille ainsi que procédé pour l'orientation d'une feuille

Country Status (8)

Country Link
US (1) US11447353B2 (fr)
EP (1) EP3694799B1 (fr)
CN (1) CN111344239B (fr)
ES (1) ES2945717T3 (fr)
MX (1) MX2020003743A (fr)
PL (1) PL3694799T3 (fr)
TW (1) TW201932398A (fr)
WO (1) WO2019072416A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3763646B1 (fr) 2019-07-11 2021-08-11 Müller Apparatebau GmbH Dispositif et procédé de transfert des feuilles entre des unités de transport
CN112850246A (zh) * 2020-12-30 2021-05-28 淮阴工学院 膜片输送自动矫正装置
CN114275597A (zh) * 2021-11-30 2022-04-05 山西光兴光电科技有限公司 对齐装置及间隔纸回收设备
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WO2025165397A1 (fr) * 2024-01-29 2025-08-07 Kohlam, Llc Dispositif d'alignement de composite multicouche

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Also Published As

Publication number Publication date
ES2945717T3 (es) 2023-07-06
PL3694799T3 (pl) 2023-06-26
CN111344239A (zh) 2020-06-26
US20200270084A1 (en) 2020-08-27
US11447353B2 (en) 2022-09-20
TW201932398A (zh) 2019-08-16
CN111344239B (zh) 2021-11-02
MX2020003743A (es) 2020-08-03
EP3694799A1 (fr) 2020-08-19
WO2019072416A1 (fr) 2019-04-18

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