EP3763648B1 - Dispositif et procédé pour retourner des feuilles de revêtement - Google Patents

Dispositif et procédé pour retourner des feuilles de revêtement Download PDF

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Publication number
EP3763648B1
EP3763648B1 EP20184268.9A EP20184268A EP3763648B1 EP 3763648 B1 EP3763648 B1 EP 3763648B1 EP 20184268 A EP20184268 A EP 20184268A EP 3763648 B1 EP3763648 B1 EP 3763648B1
Authority
EP
European Patent Office
Prior art keywords
coating sheet
over
drawing direction
draw
turned
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
EP20184268.9A
Other languages
German (de)
English (en)
Other versions
EP3763648A1 (fr
Inventor
Florian Barth
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.)
Wemhoener Surface Technologies GmbH and Co KG
Original Assignee
Wemhoener Surface Technologies GmbH and Co KG
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
Priority claimed from DE102019128975.0A external-priority patent/DE102019128975A1/de
Application filed by Wemhoener Surface Technologies GmbH and Co KG filed Critical Wemhoener Surface Technologies GmbH and Co KG
Publication of EP3763648A1 publication Critical patent/EP3763648A1/fr
Application granted granted Critical
Publication of EP3763648B1 publication Critical patent/EP3763648B1/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
    • B65H15/00—Overturning articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/08—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers
    • B65H5/10—Reciprocating or oscillating grippers, e.g. suction or gripper tables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/36—Article guides or smoothers, e.g. movable in operation
    • B65H5/38—Article guides or smoothers, e.g. movable in operation immovable in operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/33—Modifying, selecting, changing orientation
    • B65H2301/332—Turning, overturning
    • B65H2301/3321—Turning, overturning kinetic therefor
    • B65H2301/33214—Turning, overturning kinetic therefor about an axis perpendicular to the direction of displacement and parallel to the surface of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2405/00—Parts for holding the handled material
    • B65H2405/50—Gripping means
    • B65H2405/51—Gripping means oscillating in arcuate paths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2405/00—Parts for holding the handled material
    • B65H2405/50—Gripping means
    • B65H2405/52—Gripping means reciprocating
    • 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
    • B65H2701/19—Specific article or web
    • B65H2701/1938—Veneer sheet

Definitions

  • the invention relates to a device and a method for turning a coating sheet placed on a pre-drawing table according to the preambles of claims 1 and 7.
  • the coating sheets In the case of panel coating with sheet material, the coating sheets must be separated from individual sheet stacks, with at least one sheet being placed under and at least one sheet on top of the panel to be coated on a conveying line. However, since the coating sheets only have a decoration on one side, every second coating sheet must be turned over when removing coating sheets stored on a single stack of sheets.
  • EP 3 028 968 B1 A device and a working method for separating and turning individual sheets stored on a stack of sheets are known, EP 3 028 968 B1 , in which a coating sheet is removed from a stack of sheets over its entire surface and is also turned over over its entire surface.
  • This known device is very complex in terms of mechanical engineering and is therefore uneconomical in some areas of application.
  • this known technique has the disadvantage that it cannot achieve the cycle times of a coating press designed as a short-cycle press, so that an undesired loss of time occurs each time a stack of workpieces to be pressed is put together.
  • U.S. 5,845,759 A discloses the preamble of claims 1 and 7 respectively.
  • the trailing edge is also picked up with a squeegee, the sheet is lifted and folded forward in the pulling direction and unrolled in a forward movement.
  • the sheet When the sheet is clamped, it forms an envelope wave running in the pulling direction, which generates bending stress in the material of the coating sheet, which is suddenly discharged at the last moment of the turning process.
  • the sheet edge which is now directed backwards and was previously the front edge, first rises up and then slides backwards over the table surface underneath, which often results in an overloading of the rear edge, which can lead to the coating sheet breaking.
  • the object of the invention is to provide a device and a method for turning over a coating sheet placed on a pre-drawing table, which reliably excludes the risk of damage to the rear edge of a coating sheet or to the coating sheet itself.
  • the device for turning over a coating sheet placed on a pre-drawing table has a contact device for contacting the rear edge of the coating sheet, which has a transverse axis that can move upwards, in the drawing direction, and about a horizontal and transverse to the drawing direction, and is rotatably mounted on a longitudinal guide above the drawing table is, with a support device being arranged in or below the table level of the advance table, with which a coating sheet that has not yet been completely turned before it is in Pulling direction moving cover shaft in the rear cover area can be mechanically or pneumatically supported from below.
  • the coating sheet When the coating sheet is pulled forward or turned, it is supported by the support device, which lifts the coating sheet slightly and thus cancels the weight of the coating sheet, so that the rear edge of the coating sheet is relieved and can relax freely to the rear without the risk that the rear edge is mechanically overloaded and tears or the coating sheet breaks.
  • the support device consists of a support beam running horizontally transversely to the pulling direction, which is designed to be liftable vertically from the table level after the already turned earlier rear edge of the coating sheet has been passed, so that this support is purely mechanical and the movement is carried out via a wide variety of different methods electrical, pneumatic, or hydraulic drives can be generated, which, however, are all constructed considerably more simply than the known prior art, which is complex in terms of mechanical engineering.
  • the support bar can be designed to be raised so far that the former front edge of the coating sheet can be lifted completely from the surface of the pre-drawing table, with the vertical travel of the support bar being advantageously designed to be larger than the diameter of the cover shaft of the coating sheet.
  • this consists of a blowing bar running horizontally transverse to the drawing direction, which is arranged below the table level in the drawing table and by means of which an air flow can be blown in under the coating sheet in front of the cover shaft after the already turned earlier rear edge of the coating sheet has been passed, thus creating an air cushion can be generated, in which case the air flow can advantageously be of such a strength that it can be used to completely lift the former front edge of the coating sheet from the surface of the drawing table, so that the former front edge, which is in the air, can also relax and align backwards in an elastic, flat manner, where the air cushion escapes.
  • the Figures 1-8 each show a pull-out table 1 with a stack of sheets 9 arranged next to it on the right and a longitudinal guide 4 for the pull strips 10; 11 arranged above the pull-out table 1 and the stack of sheets 9.
  • the figures 1 and 5 each show a coating sheet 2 that has already been turned over halfway, with a right-hand turning shaft 6, and figures 2 and 6 a moving one Coating sheet 2 with a coating sheet 2 just barely resting on the previous front side shortly before its end is completely folded over.
  • the figure 7 shows analogous to figure 3 an operating blow bar 8, which creates an air cushion underneath the coating sheet 2, which carries the coating sheet 2 and thus relieves the rear edge to such an extent that the edge is also lifted from the surface of the drawing table 1 here, so that it relaxes elastically flat to the rear and can align, with the air cushion escaping.

Claims (10)

  1. Dispositif pour tourner des feuilles de revêtement (2) déposées sur une table d'avance (1), dans lequel il présente un dispositif de contact pour la mise en contact avec le bord arrière de la feuille de revêtement (2), lequel est monté vers le haut et dans la direction de traction (3) sur un guidage longitudinal (4) au-dessus de la table d'avance (1), caractérisé en ce que le dispositif de contact est monté de manière à pouvoir tourner autour d'un axe transversal horizontal et mobile transversalement par rapport à la direction de traction (3) et qu'un dispositif de soutien (5), qui soutient de manière mécanique ou pneumatique par le bas une feuille de revêtement (2) pas encore entièrement tournée devant son arbre de retournement (6) se déplaçant dans la direction de traction (3) dans la zone de sortie arrière, est disposé dans ou sous le plan de table de la table d'avance (1).
  2. Dispositif selon la revendication 1, caractérisé en ce que le dispositif de soutien (5) est constitué d'une barre de soutien (7) s'étendant horizontalement transversalement par rapport à la direction de traction (3), qui est réalisée de manière à pouvoir être soulevée verticalement du plan de table après avoir passé le bord arrière précédent déjà tourné de la feuille de revêtement (2).
  3. Dispositif selon la revendication 2, caractérisé en ce que la barre de soutien (7) est réalisée de manière à pouvoir être soulevée vers le haut de telle façon que l'ancien bord avant de la feuille de revêtement (2) est soulevé de la surface de la table d'avance (1).
  4. Dispositif selon la revendication 3, caractérisé en ce que la course de déplacement verticale de la barre de soutien (7) est plus grande que la grandeur du diamètre de l'arbre de retournement (6) de la feuille de revêtement (2).
  5. Dispositif selon la revendication 1, caractérisé en ce que le dispositif de soutien (5) est constitué d'une baguette de soufflage (8) s'étendant horizontalement transversalement par rapport à la direction de traction (3), au moyen de laquelle après le passage par le bord arrière précédent déjà tourné de la feuille de revêtement (2) devant l'arbre de retournement (5) un flux d'air peut être insufflé sous la feuille de revêtement (2) et un coussin d'air peut être produit.
  6. Dispositif selon la revendication 5, caractérisé en ce que le flux d'air présente une puissance telle qu'avec celui-ci l'ancien bord avant de la feuille de revêtement (2) peut être soulevé de la surface de la table d'avance (1).
  7. Procédé pour tourner des feuilles de revêtement (2) déposées sur une table d'avance (1), dans lequel le bord arrière de la feuille de revêtement (2) est mis en contact avec un dispositif de contact et déplacé par celui-ci vers le haut et dans la direction de traction (3) le long d'un guidage longitudinal (4) au-dessus de la table d'avance (1), caractérisé en ce que le dispositif de contact est amené en rotation autour d'un axe transversal horizontal et pouvant être amené en rotation transversalement par rapport à la direction de traction (3) et la feuille de revêtement (2) pas encore entièrement tournée est soutenue de manière mécanique ou pneumatique devant un arbre de retournement (6) ainsi produit et entraîné dans la direction de traction (3) par un dispositif de soutien (5) disposé dans ou sous le plan de table de la table d'avance (1).
  8. Procédé selon la revendication 7, caractérisé en ce qu'après le passage par le bord arrière précédent déjà tourné de la feuille de revêtement (2) la partie pas encore tournée est soulevée d'une barre de soutien (7) s'étendant horizontalement transversalement par rapport à la direction de traction et le bord avant précédent avant son retournement, qui s'oriente pendant la poursuite du déplacement de la feuille de revêtement (2) dans la direction de traction (3) vers l'arrière de manière plate et élastique de façon présente dans l'air et se relâche, est déchargé de son poids.
  9. Procédé selon la revendication 7, caractérisé en ce qu'après le passage par le bord arrière précédent déjà tourné de la feuille de revêtement (2) la partie pas encore tournée est soulevée par une baguette de soufflage (8) s'étendant horizontalement transversalement par rapport à la direction de traction (3) avec formation d'un coussin d'air au moyen d'un flux d'air et le bord arrière précédent, qui s'oriente pendant la poursuite du déplacement de la feuille de revêtement (2) dans la direction de traction (3) vers l'arrière de manière plate et élastique de façon présente dans l'air et se relâche, est déchargé de son poids avant son retournement.
  10. Procédé selon l'une quelconque des revendications 7 à 9, caractérisé en ce que le soulèvement et pivotement vers l'avant du bord arrière de la feuille de revêtement (2) est réalisé par une baguette de pré-tournage additionnelle disposée sous le plan de table de la table d'avance (1), et le mouvement d'avance supplémentaire s'effectue à l'aide d'une autre baguette de traction, qui reçoit de la baguette de pré-tournement dans l'air le bord arrière soulevé et tourné de la feuille de fixation (2).
EP20184268.9A 2019-07-06 2020-07-06 Dispositif et procédé pour retourner des feuilles de revêtement Active EP3763648B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019118331 2019-07-06
DE102019128975.0A DE102019128975A1 (de) 2019-07-06 2019-10-28 Vorrichtung und Verfahren zum Wenden von Beschichtungsbögen

Publications (2)

Publication Number Publication Date
EP3763648A1 EP3763648A1 (fr) 2021-01-13
EP3763648B1 true EP3763648B1 (fr) 2022-01-26

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ID=71522954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20184268.9A Active EP3763648B1 (fr) 2019-07-06 2020-07-06 Dispositif et procédé pour retourner des feuilles de revêtement

Country Status (2)

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EP (1) EP3763648B1 (fr)
ES (1) ES2907219T3 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04345450A (ja) * 1991-05-24 1992-12-01 Mitsubishi Heavy Ind Ltd 枚葉印刷機の給紙装置
JP3557042B2 (ja) * 1996-04-19 2004-08-25 ペガサスミシン製造株式会社 生地片移送装置
DE102014117485B4 (de) 2014-11-28 2017-03-23 Wemhöner Surface Technologies GmbH & Co. KG Vorrichtung und Arbeitsverfahren zum Separieren und Wenden von auf einem Bogenstapel bevorrateten Einzelbögen
ITUB20152339A1 (it) * 2015-07-21 2017-01-21 Giuseppe Gallucci Apparecchiatura per il ribaltamento di fogli e/o pannelli

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Publication number Publication date
ES2907219T3 (es) 2022-04-22
EP3763648A1 (fr) 2021-01-13

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