EP2628578B1 - Appareil de perforation d'une nappe en un matériau souple - Google Patents

Appareil de perforation d'une nappe en un matériau souple Download PDF

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Publication number
EP2628578B1
EP2628578B1 EP13155451.1A EP13155451A EP2628578B1 EP 2628578 B1 EP2628578 B1 EP 2628578B1 EP 13155451 A EP13155451 A EP 13155451A EP 2628578 B1 EP2628578 B1 EP 2628578B1
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EP
European Patent Office
Prior art keywords
perforating
web
cylinder
anvil roll
perforation
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.)
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Application number
EP13155451.1A
Other languages
German (de)
English (en)
Other versions
EP2628578A1 (fr
Inventor
Jean-Marc Scherrer
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Individual
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/20—Cutting beds
    • B26D7/204—Anvil rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2628—Means for adjusting the position of the cutting member
    • B26D7/265—Journals, bearings or supports for positioning rollers or cylinders relatively to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/24—Perforating by needles or pins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/20—Cutting beds
    • B26D2007/202—Rollers or cylinders being pivoted during operation

Definitions

  • the subject of the present invention is an apparatus for perforating a sheet made of a flexible material, in particular PVC sheets (polyvinyl chloride) used to produce false tensile walls.
  • PVC sheets polyvinyl chloride
  • false walls such as false ceilings or false walls
  • perforated false walls with very interesting acoustic properties, in order to reduce the noise in large volumes or to play on certain frequencies in order to facilitate the propagation of sound, for example in conference or concert halls.
  • the base ply of these false stretched walls are provided with microperforations whose diameter and density may vary depending on the acoustic properties sought.
  • the diameter of the perforations can be between 0.1 mm and 4 mm, their density being between 10000 and 500000 perforations / m 2 , with a regular and uniform distribution.
  • a web has a single type of perforations, such acoustic property webs can combine one or more different perforation distributions.
  • Patent is also known US3126777 an apparatus for perforating a web according to the preamble of claim 1.
  • the present invention therefore aims to provide a new means of producing perforated flexible material webs which is reliable and economical.
  • the subject of the present invention is an apparatus for perforating a sheet made of a flexible material comprising at least one feed cylinder capable of delivering the sheet in a continuous manner that is remarkable in that said apparatus comprises at least one perforation cylinder.
  • the surface of which is provided with predefinedly distributed perforating excrescences, which perforation cylinder is associated with a counterpart, intended to ensure the constant and regular plating of the sheet in tangential contact with the perforation cylinder.
  • this apparatus can be fed continuously with a flexible sheet which is in roll and that the controlled rotation of the perforation cylinder, in synchronization with the speed of advance of the sheet tangentially to said roll, allows a uniform and uniform perforation of the tablecloth.
  • the perforation cylinder is mounted interchangeably, which allows the same apparatus to be used to produce the different types of perforated sheets, depending on the demand.
  • the apparatus for perforating a sheet of flexible material comprises at least one perforation cylinder whose surface is provided with predefinedly distributed perforating excrescences, which perforation cylinder is associated with a counterpart, intended to ensure the regular and regular plating of the sheet in tangential contact with the perforating cylinder, the apparatus further comprising a perforation waste recovery device which combines a blowing of air and a suction is placed at downstream of the perforation cylinder and the counterpart and arranged with the latter to facilitate the take-off of the cutout formed in the sheet of the associated perforated hole.
  • the apparatus comprises at least one feed roller able to deliver the web continuously.
  • a ply of flexible material is meant in particular sheets of textile material, cardboard or synthetic polymer film, more particularly polyvinyl chloride (PVC).
  • PVC polyvinyl chloride
  • either the perforation cylinder will have two or more types of perforating excrescences, or several perforation assemblies will be disposed consecutively, each producing a desired type of perforation.
  • the counterpart is a cylinder of rigid material covered with a flexible coating.
  • a coating must be able to be in contact with perforating excrescences, or penetrated by them, without being damaged.
  • This coating is thus advantageously taken from: felt, synthetic polymer foam.
  • the perforation cylinder is driven by a motor.
  • the training will then be synchronized with the tangential speed of the web and also with the feed cylinder.
  • the perforation cylinder is free to rotate, then driven by advancement of the web hooked on its perforations excrescences.
  • the cylinder of the counterpart is rotatably mounted or driven synchronously with the rotation of the perforation cylinder. Both cylinders are counter-rotating.
  • the counterpart is movably mounted relative to the perforation cylinder in order to be able to adjust the distance between their respective surfaces and thus allow the initial positioning of one end of the fabric on the perforation roll and then to press on the by means of the counterpart.
  • the perforating excrescences of the perforation cylinder are taken from: tips, cylinders with a concave end with sharp edges. This produces well-defined disk-shaped perforations.
  • the lateral surface of the excrescences is non-stick, in order to facilitate their release from the sheet after perforation.
  • the distance separating the apex of the perforating excrescences with the surface of the perforation cylinder is at least equal to 105% of the thickness of the sheet of flexible material to be perforated. This ensures that the sheet is traversed from one side to the other by the perforation growths.
  • the apparatus further comprises a perforation waste recovery device combining air blowing and suction. This device is placed just downstream of the perforation assembly to facilitate the take-off of the cutout from its perforated hole.
  • the apparatus according to the invention will advantageously be used to produce perforated PVC sheets which will be used to produce false walls with acoustic properties.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Description

    Domaine technique
  • La présente invention a pour objet un appareil de perforation d'une nappe en un matériau souple, en particulier de nappes en PVC (chlorure de polyvinyle) utilisées pour réaliser des fausses parois tendues.
    • Technique antérieure
  • Dans les fausses parois tendues, telles que faux-plafonds ou faux-murs, on a récemment développé des fausses parois perforées qui présentent des propriétés acoustiques fort intéressantes, aux fins de réduire le bruit dans des grands volumes ou de jouer sur certaines fréquences afin de faciliter la propagation du son, par exemple dans des salles de conférence ou de concert.
  • A cette fin, la nappe de base de ces fausses parois tendues, généralement constituées d'un film de PVC, sont munies de microperforations dont le diamètre et la densité peuvent varier en fonction des propriétés acoustiques recherchées. Ainsi par exemple, le diamètre des perforations peut être compris entre 0,1 mm et 4 mm, leur densité étant comprise entre 10000 et 500000 perforations/m2, avec une distribution régulière et uniforme. En outre, si habituellement une nappe présente un seul type de perforations, de telles nappes à propriété acoustique peuvent combiner une ou plusieurs distributions de perforations différentes.
  • Aujourd'hui ces nappes perforées sont obtenues avec un appareil de perforation par aiguille montée sur une tête mobile en déplacement au-dessus de la nappe.
  • Face à l'engouement marqué pour ces produits acoustiques et un besoin de production accru, un tel système n'est plus adapté pour produire des quantités importantes de nappes perforées de façon rapide, fiable et économique.
  • On connaît également du brevet US3126777 un appareil de perforation d'une nappe selon le préambule de la revendication 1.
  • La présente invention vise donc à proposer un nouveau moyen de production de nappes en matériau souple perforées qui soit fiable et économique.
    • Résumé de l'invention
  • A cet égard, la présente invention a pour objet un appareil de perforation d'une nappe en un matériau souple comprenant au moins un cylindre d'alimentation apte à délivrer la nappe en continu remarquable en ce que ledit appareil comporte au moins un cylindre de perforation dont la surface est munie d'excroissances perforatrices distribuées de manière prédéfinie, lequel cylindre de perforation est associé à une contrepartie, destinée à assurer le plaquage constant et régulier de la nappe en contact tangentiel du cylindre de perforation.
  • On comprend bien que cet appareil peut être alimenté en continu avec une nappe souple se présentant en rouleau et que la rotation contrôlée du cylindre de perforation, en synchronisation avec la vitesse d'avancement de la nappe tangentiellement audit rouleau permet une perforation régulière et uniforme de la nappe. En outre, selon une variante préférée, le cylindre de perforation est monté de manière interchangeable, ce qui permet d'utiliser le même appareil pour produire les différents types de nappes perforées, en fonction de la demande.
  • D'autres avantages et caractéristiques ressortiront mieux de la description détaillée qui va suivre.
    • Description détaillée de l'invention
  • Selon une caractéristique essentielle de l'invention, l'appareil de perforation d'une nappe en un matériau souple comporte au moins un cylindre de perforation dont la surface est munie d'excroissances perforatrices distribuées de manière prédéfinie, lequel cylindre de perforation est associé à une contrepartie, destinée à assurer le plaquage constant et régulier de la nappe en contact tangentiel du cylindre de perforation, l'appareil comportant en outre un dispositif de récupération des déchets de perforation lequel combine un soufflage d'air et une aspiration est placé à l'aval du cylindre de perforation et de la contrepartie et agencé avec ces derniers pour faciliter le décollage de la découpe formée dans la nappe du trou perforé associé.
  • En outre, l'appareil comprend au moins un cylindre d'alimentation apte à délivrer la nappe en continu.
  • Dans le présent texte, par nappe en matériau souple, on désigne en particulier des nappes en matériau textile, en carton ou encore en film polymère synthétique, plus particulièrement du polychlorure de vinyle (PVC).
  • Si la nappe doit être produite avec deux ou plus types de perforations, soit le cylindre de perforation comportera deux types ou plus d'excroissances perforatrices, soit on disposera consécutivement plusieurs ensembles de perforation, chacun réalisant un type de perforation souhaité.
  • Selon une variante d'exécution préférée, la contrepartie est un cylindre en matériau rigide recouvert d'un revêtement souple. Un tel revêtement doit pouvoir être en contact des excroissances perforatrices, voire pénétré par celles-ci, sans être détérioré.
  • Ce revêtement est ainsi avantageusement pris parmi : feutrine, mousse de polymère synthétique.
  • Selon une autre variante préférée, le cylindre de perforation est entrainé par un moteur. L'entrainement sera alors synchronisé avec la vitesse de défilement tangentielle de la nappe et aussi avec le cylindre d'alimentation. Selon une autre variante, le cylindre de perforation est monté libre en rotation, entrainé alors par avancement de la nappe accrochée sur ses excroissances perforatrices.
  • De même, le cylindre de la contrepartie est monté libre en rotation ou entrainé de façon synchrone avec la rotation du cylindre de perforation. Les deux cylindres sont contrarotatifs.
  • Selon une caractéristique avantageuse, la contrepartie est montée mobile par rapport au cylindre de perforation afin de pouvoir ajuster la distance entre leurs surfaces respectives et permettre ainsi le positionnement initial d'une extrémité de la toile sur le rouleau de perforation puis de la plaquer sur celui-ci au moyen de la contrepartie.
  • Selon une autre caractéristique, les excroissances perforatrices du cylindre de perforation sont prise parmi : pointes, cylindres avec une extrémité concave aux bords tranchants. On réalise ainsi des perforations en forme de disque bien définis.
  • Avantageusement, la surface latérale des excroissances est anti-adhésive, afin de faciliter leur dégagement de la nappe après perforation.
  • Selon une variante préférée, la distance séparant le sommet des excroissances perforatrices avec la surface du cylindre de perforation est au moins égale à 105% de l'épaisseur de la nappe en matériau souple à perforer. On s'assure ainsi que la nappe est bien traversée de part en part par les excroissances de perforation.
  • L'appareil comporte en outre un dispositif de récupération des déchets de perforation combinant un soufflage d'air et une aspiration. Ce dispositif est placé juste à l'aval de l'ensemble de perforationpour faciliter le décollage de la découpe de son trou perforé.
    • Application industrielle
  • L'appareil selon l'invention sera avantageusement utilisé pour produire des nappes perforées en PVC qui serviront à réaliser des fausses parois tendues avec propriétés acoustiques.

Claims (9)

  1. Appareil de perforation d'une nappe en un matériau souple comprenant au moins un cylindre d'alimentation apte à délivrer la nappe en continu et au moins un cylindre de perforation dont la surface est munie d'excroissances perforatrices distribuées de manière prédéfinie, lequel cylindre de perforation est associé à une contrepartie, destinée à assurer le plaquage constant et régulier de la nappe en contact tangentiel du cylindre de perforation, l'appareil comportant en outre un dispositif de récupération des déchets de perforation par aspiration caractérisé en ce que le dispositif de récupération des déchets de perforation combinant un soufflage d'air avec l'aspiration est placé à l'aval du cylindre de perforation et de la contrepartie et agencé avec ces derniers pour faciliter le décollage de la découpe formée dans la nappe du trou perforé associé.
  2. Appareil selon la revendication 1 caractérisé en ce que la contrepartie est un cylindre en matériau rigide recouvert d'un revêtement souple.
  3. Appareil selon la revendication précédente caractérisé en ce que le revêtement souple de la contrepartie est pris parmi : feutrine, mousse de polymère synthétique.
  4. Appareil selon l'une quelconque des revendications précédentes caractérisé en ce que le cylindre de perforation est entrainé par un moteur.
  5. Appareil selon la revendication précédente en son rattachement à la revendication 2 ou 3 caractérisé en ce que cylindre de la contrepartie est monté libre en rotation ou entrainé de façon synchrone avec la rotation du cylindre de perforation.
  6. Appareil selon l'une quelconque des revendications précédentes caractérisé en ce que la contrepartie est montée mobile par rapport au cylindre de perforation afin de pouvoir ajuster la distance entre leurs surfaces respectives et permettre ainsi le positionnement initial d'une extrémité de la toile sur le cylindre de perforation puis de la plaquer sur celui-ci au moyen de la contrepartie.
  7. Appareil selon l'une quelconque des revendications précédentes caractérisé en ce que les excroissances perforatrices sont prise parmi : pointes, cylindres avec une extrémité concave aux bords tranchants.
  8. Appareil selon la revendication précédente caractérisé en ce que la distance séparant le sommet des excroissances perforatrices avec la surface du cylindre de perforation est au moins égale à 105% de l'épaisseur de la nappe en matériau souple à perforer.
  9. Utilisation de l'appareil selon l'une quelconque des revendications précédentes pour réaliser des fausses parois tendues avec propriétés acoustiques réalisées sur la base de nappes de PVC perforées.
EP13155451.1A 2012-02-17 2013-02-15 Appareil de perforation d'une nappe en un matériau souple Active EP2628578B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1200466A FR2986987B1 (fr) 2012-02-17 2012-02-17 Appareil de perforation d'une nappe en un materiau souple

Publications (2)

Publication Number Publication Date
EP2628578A1 EP2628578A1 (fr) 2013-08-21
EP2628578B1 true EP2628578B1 (fr) 2017-04-05

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FR (1) FR2986987B1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0208077A1 (fr) * 1985-06-26 1987-01-14 Teepak, Inc. Procédé et dispositif de perforation de feuilles d'empaquetage pour aliments
US5853138A (en) * 1996-12-16 1998-12-29 Chang; Chi-Ping Plastic film processing apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126777A (en) * 1964-03-31 shabram
GB790212A (en) * 1954-07-08 1958-02-05 F & H Southern Agency Ltd Improvements in or relating to methods of and machines for perforating sheet material
GB2102808B (en) * 1981-07-21 1984-08-01 Ici Plc Perforated foamed olefine polymer films
DE8813967U1 (de) * 1988-07-11 1989-03-02 Hettmannsperger & Löchner GmbH & Co KG, 7520 Bruchsal Sichtstreifenperforations-Vorrichtung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0208077A1 (fr) * 1985-06-26 1987-01-14 Teepak, Inc. Procédé et dispositif de perforation de feuilles d'empaquetage pour aliments
US5853138A (en) * 1996-12-16 1998-12-29 Chang; Chi-Ping Plastic film processing apparatus

Also Published As

Publication number Publication date
FR2986987B1 (fr) 2014-11-21
EP2628578A1 (fr) 2013-08-21
FR2986987A1 (fr) 2013-08-23

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