WO2002094546A1 - Membrane for vacuum press - Google Patents

Membrane for vacuum press Download PDF

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Publication number
WO2002094546A1
WO2002094546A1 PCT/ES2001/000194 ES0100194W WO02094546A1 WO 2002094546 A1 WO2002094546 A1 WO 2002094546A1 ES 0100194 W ES0100194 W ES 0100194W WO 02094546 A1 WO02094546 A1 WO 02094546A1
Authority
WO
WIPO (PCT)
Prior art keywords
membrane
vacuum press
frame
vacuum
press
Prior art date
Application number
PCT/ES2001/000194
Other languages
Spanish (es)
French (fr)
Inventor
Antón NABUURS
Original Assignee
Nabuurs Developing, S.L.
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 Nabuurs Developing, S.L. filed Critical Nabuurs Developing, S.L.
Priority to PCT/ES2001/000194 priority Critical patent/WO2002094546A1/en
Publication of WO2002094546A1 publication Critical patent/WO2002094546A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B5/00—Presses characterised by the use of pressing means other than those mentioned in the preceding groups
    • B30B5/02—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of a flexible element, e.g. diaphragm, urged by fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/28—Component parts, details or accessories; Auxiliary operations for applying pressure through the wall of an inflated bag or diaphragm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/16—Lining or labelling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/261—Handling means, e.g. transfer means, feeding means
    • B29C51/262—Clamping means for the sheets, e.g. clamping frames

Definitions

  • Vacuum presses consist of a surface that has a cover with sealing means, devices for suction of the air contained in the resulting chamber, in which the cover consists of a frame carrying an elastic membrane.
  • the presses are used for the union of veneers to surfaces, be these veneers of wood, plastics or composites, and the surfaces of chipboard or others.
  • the suction of the membrane presses in a regular way the sheet to the surface of the piece, so that when eliminating the existing air between both the cover presses against the sheet, and the corresponding piece, adapting and joining to the shape of the piece .
  • the membrane be, as we have said, resistant to heat, and transparent as much as possible to the action of a thermal source, such as a focus of infrared radiation.
  • a subject of the present invention is a membrane for a vacuum press with a hinged cover, said membrane being located in a frame located in the upper part, which has sealing means and fixing means in a closed position, which overcomes the drawbacks described above, both of pieces size as of temperature.
  • Figure 1 shows a perspective view of a vacuum press, with the membrane object of the invention
  • Figure 2 shows a sectional view of the membrane arranged on the closing frame of the table.
  • Figure 3 shows a first means of joining the joints that form the vertical edges, by means of a part that partially adheres, by means of glue or by welding, to each of the sides.
  • Figure 4 shows an alternative joining means to that of figure 3, in which said joining is carried out by vulcanizing the material in the area of the edges to be joined.
  • 3 shows the frame of the cover and 4 an elastic membrane fixed on said frame.
  • the frame 3 houses the periphery of the membrane 4.
  • Said membrane 4 is provided with side walls 5 that allow a cover 6 (which forms the same piece with the said walls) is susceptible to being deformed without the need to resort to its elastic properties.
  • said membrane adopts in a relaxed state (non-elastic) a three-dimensional configuration, and preferably a prism, without ruling out other possibilities.
  • the membrane is held at the periphery of the frame by means of flaps 7 existing at the edges of the body that forms it.
  • the membrane In order for the membrane to withstand the heat provided by the heating means required for joining in certain types of parts, it has been provided that the membrane is preferably made of silicone rubber. In any case, the thickness and material used will depend on the thermal requirements.
  • the frame is articulated with respect to the table on one of its sides by means of articulation 9, and it has in the area of union between the frame and the table a seal 8.
  • the material on each side must be joined, so the incorporation of supplementary strips to reinforce the corresponding joint, preferably located on the inside of the membrane, and alternatively a vulcanized joint of filler material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The invention relates to a vacuum press membrane which is intended to be placed on the frame (3) of a table (1) forming the base of a vacuum press. The inventive membrane is preferably made from silicon rubber owing to the heat resistance properties thereof. Said membrane adopts a three-dimensional shape and preferably, but not exclusively, the shape of a prism. The invention can be used in the production of vacuum presses.

Description

MEMBRANA PARA PRENSA DE VACIO MEMBRANE FOR VACUUM PRESS
Las prensas de vacío consisten en una superficie que presenta una cubierta con medios de estanquidad, dispositivos de succión del aire contenido en la cámara resultante, en los que la cubierta está constituida por un marco portador de una membrana elástica.Vacuum presses consist of a surface that has a cover with sealing means, devices for suction of the air contained in the resulting chamber, in which the cover consists of a frame carrying an elastic membrane.
Las prensas son utilizadas para la unión de chapas a superficies, sean estas chapas de madera, materias plásticas o composites, y las superficies de madera aglomerada u otros.The presses are used for the union of veneers to surfaces, be these veneers of wood, plastics or composites, and the surfaces of chipboard or others.
La succión de la membrana presiona de una manera regular la chapa a la superficie de la pieza, de modo que al eliminar el aire existente entre ambas la cubierta presiona contra la chapa, y la correspondiente pieza, adaptándose y uniéndose a la forma de la pieza.The suction of the membrane presses in a regular way the sheet to the surface of the piece, so that when eliminating the existing air between both the cover presses against the sheet, and the corresponding piece, adapting and joining to the shape of the piece .
Esto permite adaptar cualquier superficie a cualquier pieza.This allows to adapt any surface to any part.
Sin embargo, no es posible realizar uniones en piezas grande, debido a que la elasticidad del as membranas es limitada,: y en caso de ser muy forzada dicha elasticidad sufriría deterioro y desgastes importantes, e incluso roturas. Es por tanto deseable que la membrana elástica no resulte excesivamente estirada durante su utilización.However, it is not possible to make joints in large pieces, because the elasticity of the membranes is limited ,: and in case of being very forced, this elasticity would suffer deterioration and significant wear, and even breaks. It is therefore desirable that the elastic membrane is not excessively stretched during use.
Además, las membranas convencionales de caucho, si bien tienen un alto coeficiente elástico, no soportan el calor.In addition, conventional rubber membranes, while having a high elastic coefficient, do not withstand heat.
La unión de cierto tipo de materiales (plásticos gruesos) requiere a menudo un precaleπtamiento ya que en caso de moldearse en frío se producen roturas, siendo la plasticidad elevada, por el contrario, en este tipo de materiales, cuando se alcanzan ciertas temperaturas, entre 60° y 200° en función del tipo de material.The union of certain types of materials (thick plastics) often requires a preheating since in case of cold molding breaks occur, being the plasticity high, on the contrary, in this type of materials, when certain temperatures are reached, between 60 ° and 200 ° depending on the type of material.
Las membranas citadas, por lo tanto, no pueden ser utilizadas en el prensado de piezas que requieran un alto grado de calor, ya que de ser aplicado la membrana perdería sus propiedades facilitando extraordinariamente la rotura.The mentioned membranes, therefore, cannot be used in the pressing of pieces that require a high degree of heat, since if the membrane is applied it would lose its properties, greatly facilitating breakage.
Así, es deseable que la membrana sea, como hemos dicho, resistente al calor, y transparente en lo posible a la acción de una fuente térmica, tal como un foco de radiación infrarroja.Thus, it is desirable that the membrane be, as we have said, resistant to heat, and transparent as much as possible to the action of a thermal source, such as a focus of infrared radiation.
Existen también prensas de vacío consistentes en bolsas de vacío, que requieren la introducción de la pieza en su interior, el sellado de la embocadura y la posterior extracción del aire que hay en su interior, pero si bien su tamaño podría permitir la utilización de piezas de cierta altura, su operatividad es baja debido a la complejidad de las operaciones a realizar.There are also vacuum presses consisting of vacuum bags, which require the introduction of the part inside, the sealing of the mouthpiece and the subsequent extraction of the air inside, but although its size could allow the use of parts of a certain height, its operation is low due to the complexity of the operations to be carried out.
La presente invención tiene por objeto una membrana para una prensa de vacío con cubierta articulada, situada dicha membrana en un marco situado en la parte superior, que dispone medios de estanquidad y medios de fijación en posición cerrada, que supera los inconvenientes antes descritos, tanto de tamaño de piezas como de temperatura.A subject of the present invention is a membrane for a vacuum press with a hinged cover, said membrane being located in a frame located in the upper part, which has sealing means and fixing means in a closed position, which overcomes the drawbacks described above, both of pieces size as of temperature.
Con objeto de ilustrar la explicación que va a seguir, adjuntamos a la presente memoria descriptiva una hoja de dibujos que en dos figuras representa la esencia de la presente invención y en las que:In order to illustrate the explanation that will follow, we attach to the present specification a sheet of drawings that in two figures represents the essence of the present invention and in which:
La figura 1 muestra una vista en perspectiva de una prensa de vació, con la membrana objeto de la invención, yFigure 1 shows a perspective view of a vacuum press, with the membrane object of the invention, and
La figura 2 muestra una vista en sección de la membrana dispuesta sobre el marco de cierre de la mesa.Figure 2 shows a sectional view of the membrane arranged on the closing frame of the table.
La figura 3 muestra un primer medio de unión de las juntas que forman las aristas verticales, por medio de una pieza que se adhiere parcialmente, por medio de cola o por soldadura, a cada uno de los lados.Figure 3 shows a first means of joining the joints that form the vertical edges, by means of a part that partially adheres, by means of glue or by welding, to each of the sides.
La figura 4 muestra un medio de unión alternativo al de la figura 3, en que dicha unión se realiza por vulcanizado de material en la zona de las aristas a unir.Figure 4 shows an alternative joining means to that of figure 3, in which said joining is carried out by vulcanizing the material in the area of the edges to be joined.
De acuerdo con la realización representada en dichas figuras, vemos con 1 una mesa que constituye la base de una prensa de vacío, en la que se sitúan preferentemente una pluralidad de pequeños orificios por donde es extraído el aire contenido en la cámara resultante tras haberse cerrado la cubierta. 3 muestra el marco de la cubierta y 4 una membrana elástica fijada sobre dicho marco.According to the embodiment represented in said figures, we see with 1 a table that constitutes the base of a vacuum press, in which a plurality of small holes are preferably placed through which the air contained in the resulting chamber is extracted after being closed the cover. 3 shows the frame of the cover and 4 an elastic membrane fixed on said frame.
De acuerdo con una vista de perfil, según la figura 2, vemos que el marco 3 aloja la periferia de la membrana 4. Dicha membrana 4 está provista de unas paredes laterales 5 que permiten que una cubierta 6 (que forma una misma pieza con las dichas paredes) sea susceptible de ser deformada sin necesidad de recurrir a sus propiedades elásticas.According to a profile view, according to figure 2, we see that the frame 3 houses the periphery of the membrane 4. Said membrane 4 is provided with side walls 5 that allow a cover 6 (which forms the same piece with the said walls) is susceptible to being deformed without the need to resort to its elastic properties.
En definitiva, dicha membrana adopta en estado relajado (no elástico) una configuración tridimensional, y preferentemente de prisma, sin descartar otras posibilidades.In short, said membrane adopts in a relaxed state (non-elastic) a three-dimensional configuration, and preferably a prism, without ruling out other possibilities.
La membrana es sujeta en la periferia del marco por medio de unas solapas 7 existentes en los bordes del cuerpo que la forma.The membrane is held at the periphery of the frame by means of flaps 7 existing at the edges of the body that forms it.
Con objeto de que la membrana soporte el calor proporcionado por los medios calefactores requeridos para la unión en determinado tipo de piezas, se ha previsto que la membrana sea preferentemente de caucho de silicona. En cualquier caso, el grosor y maeterial utilizado dependerán de los requerimientos térmicos.In order for the membrane to withstand the heat provided by the heating means required for joining in certain types of parts, it has been provided that the membrane is preferably made of silicone rubber. In any case, the thickness and material used will depend on the thermal requirements.
El marco está articulado respecto a la mesa en uno de sus laterales por un medio de articulación 9, y dispone en la zona de unión entre el marco y la mesa de una junta de estanquidad 8.The frame is articulated with respect to the table on one of its sides by means of articulation 9, and it has in the area of union between the frame and the table a seal 8.
En las aristas verticales debe unirse el material de cada uno de los lados, por lo que se ha previsto la incorporación de unas tiras supletorias de refuerzo de la unión correspondiente, preferentemente situadas en la parte interior de la membrana, y alternativamente una unión por vulcanizado de material de relleno.On the vertical edges, the material on each side must be joined, so the incorporation of supplementary strips to reinforce the corresponding joint, preferably located on the inside of the membrane, and alternatively a vulcanized joint of filler material.
Es de aplicación en la fabricación de prensas de vacío. It is applicable in the manufacture of vacuum presses.

Claims

REIVINDICACIONES
1.- Membrana para prensa de vacío, para ser situada sobre un marco (3) articulado o practicable en una mesa (1) que dispone medios de extracción de aire (2), caracterizada por adoptar en posición relajada una configuración tridimensional.1.- Membrane for vacuum press, to be placed on a frame (3) articulated or practicable on a table (1) that has air extraction means (2), characterized by adopting in a relaxed position a three-dimensional configuration.
2.- Membrana para prensa de vacío, según ia reivindicación 1, caracterizada porque la membrana adopta una forma esencialmente de prisma.2.- Membrane for vacuum press, according to claim 1, characterized in that the membrane adopts an essentially prism shape.
3.- Membrana para prensa de vacío, según las reivindicaciones 1 y 2, caracterizada porque los bordes forman una solapa de fijación (7) sobre el marco (3) sobre el que se sitúa.3. Membrane for vacuum press, according to claims 1 and 2, characterized in that the edges form a fixing flap (7) on the frame (3) on which it is located.
4.- Membrana para prensa de vacío, según las reivindicaciones 1 y 2, caracterizada por ser resistente al calor en función de la temperatura de trabajo requerida.4.- Membrane for vacuum press, according to claims 1 and 2, characterized by being resistant to heat depending on the required working temperature.
5.- Membrana para prensa de vacío, según la reivindicaciónl, caracterizada porque el material que compone la membrana es caucho de silicona.5.- Vacuum press membrane, according to claim 1, characterized in that the material that makes up the membrane is silicone rubber.
6.- Membrana para prensa de vacío, según las reivindicaciones 2 y 5, caracterizada porque en los ángulos que definen el prisma se disponen unas tiras supletorias de refuerzo de la unión correspondiente.6.- Membrane for vacuum press, according to Claims 2 and 5, characterized in that supplementary reinforcing strips of the corresponding joint are provided at the angles defining the prism.
7.- Membrana para prensa de vacío, según las reivindicación 6, caracterizada porque la tira supletoria de refuerzo está unida a las dos partes que une por medio de encolado o soldadura.7. Membrane for vacuum press, according to claim 6, characterized in that the supplementary reinforcing strip is joined to the two parts it joins by gluing or welding.
8.- Membrana para prensa de vacío, según las reivindicaciones 6 y 7, caracterizada porque la tira de refuerzo está situada de preferencia en la parte interior de la membrana.8. Membrane for vacuum press, according to claims 6 and 7, characterized in that the reinforcing strip is preferably located on the inside of the membrane.
9.- Membrana para prensa de vacío, según la reivindicación 2, caracterizada porque la unión entre las dos partes de las aristas verticales se realiza por medio de vulcanizado de material9.- Membrane for vacuum press, according to claim 2, characterized in that the union between the two parts of the vertical edges is carried out by vulcanizing the material
de relleno. filler.
PCT/ES2001/000194 2001-05-18 2001-05-18 Membrane for vacuum press WO2002094546A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/ES2001/000194 WO2002094546A1 (en) 2001-05-18 2001-05-18 Membrane for vacuum press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES2001/000194 WO2002094546A1 (en) 2001-05-18 2001-05-18 Membrane for vacuum press

Publications (1)

Publication Number Publication Date
WO2002094546A1 true WO2002094546A1 (en) 2002-11-28

Family

ID=8244331

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Application Number Title Priority Date Filing Date
PCT/ES2001/000194 WO2002094546A1 (en) 2001-05-18 2001-05-18 Membrane for vacuum press

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2620289A (en) * 1945-08-27 1952-12-02 Minnesota Mining & Mfg Method of securing flexible sheets to relatively stiff backings
ES445583A3 (en) * 1976-02-18 1977-06-01 Metzeler Laminados Iberia S A Method for the covering of objects through plates in presses with a flexible plate and application of vacuum. (Machine-translation by Google Translate, not legally binding)
US4028166A (en) * 1975-10-28 1977-06-07 Nuarc Company, Inc. Apparatus for laminating sheet material
US4078962A (en) * 1976-11-05 1978-03-14 Seal Incorporated Vacuum press
US4188254A (en) * 1978-07-24 1980-02-12 Seal Incorporated Vacuum press
WO1992021514A1 (en) * 1991-06-03 1992-12-10 Key-Tech, Inc. Method for melt printing dyes on plastic

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2620289A (en) * 1945-08-27 1952-12-02 Minnesota Mining & Mfg Method of securing flexible sheets to relatively stiff backings
US4028166A (en) * 1975-10-28 1977-06-07 Nuarc Company, Inc. Apparatus for laminating sheet material
ES445583A3 (en) * 1976-02-18 1977-06-01 Metzeler Laminados Iberia S A Method for the covering of objects through plates in presses with a flexible plate and application of vacuum. (Machine-translation by Google Translate, not legally binding)
US4078962A (en) * 1976-11-05 1978-03-14 Seal Incorporated Vacuum press
US4188254A (en) * 1978-07-24 1980-02-12 Seal Incorporated Vacuum press
WO1992021514A1 (en) * 1991-06-03 1992-12-10 Key-Tech, Inc. Method for melt printing dyes on plastic

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