EP0529214B1 - Presse à doubles bandes - Google Patents

Presse à doubles bandes Download PDF

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Publication number
EP0529214B1
EP0529214B1 EP92109516A EP92109516A EP0529214B1 EP 0529214 B1 EP0529214 B1 EP 0529214B1 EP 92109516 A EP92109516 A EP 92109516A EP 92109516 A EP92109516 A EP 92109516A EP 0529214 B1 EP0529214 B1 EP 0529214B1
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EP
European Patent Office
Prior art keywords
press
shape
plate
pressure
compensating plate
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.)
Expired - Lifetime
Application number
EP92109516A
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German (de)
English (en)
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EP0529214A3 (en
EP0529214A2 (fr
Inventor
Kurt Held
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Individual
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Individual
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Publication date
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Publication of EP0529214A2 publication Critical patent/EP0529214A2/fr
Publication of EP0529214A3 publication Critical patent/EP0529214A3/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/24—Moulding or pressing characterised by using continuously acting presses having endless belts or chains moved within the compression zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/061—Cushion plates
    • 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
    • B30B5/04—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 an endless band
    • B30B5/06—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 an endless band co-operating with another endless band
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B7/00—Presses characterised by a particular arrangement of the pressing members
    • B30B7/02—Presses characterised by a particular arrangement of the pressing members having several platens arranged one above the other
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means
    • Y10T156/1702—For plural parts or plural areas of single part
    • Y10T156/1712—Indefinite or running length work
    • Y10T156/1741—Progressive continuous bonding press [e.g., roll couples]

Definitions

  • the invention relates to a shape compensation plate according to the preamble of claim 1 or a continuously operating double belt press for the production of endless material webs such as laminates, chipboard or fiberboard, plywood or the like according to the preamble of claim 18 or a discontinuously working single or multi-day press for production of section-shaped materials according to the preamble of claim 24.
  • Double belt presses are used for the continuous production of endless web-shaped materials, in particular for the production of decorative laminate laminates, copper-clad electro-laminates, thermoplastic webs, chipboard, fiberboard and the like.
  • These double belt presses have two endless rotating press belts, between which the material web is cured under the action of pressure and possibly also heat with simultaneous transport in the forward direction.
  • pressure plates are arranged in the press frame of the double belt press, from which the pressure is transmitted to the inside of the press belts and from these to the material web.
  • ring-shaped, self-contained sliding surface seals are arranged along the edge region of the pressure plate, which are applied to the press belt with one surface such that the press belt slides along this surface during operation of the double belt press.
  • This creates pressure chambers that are delimited in the vertical direction by the pressure plate and the inside of the press belt and in the horizontal direction by the sliding surface seals.
  • a fluid pressure medium for example oil or compressed air, is introduced into these pressure plates.
  • Such isobaric double belt presses are known for example from DE-PS 27 22 197.
  • the pressure is transferred mechanically by rollers from the pressure plate to the inside of the press belt.
  • a fixed roller bed arranged in the pressure plate is known from DE-OS 31 23 291.
  • the roller bed consists of rollers arranged offset from one another, which are mounted in bearing blocks by means of shafts, these bearing strips in turn being fastened in the pressure plate.
  • a double belt press which combines the isobaric and the isochoric principle.
  • the roller bed is arranged in a pressure pad which is sealed on the side by sliding surface seals.
  • This double belt press can be operated purely isochorously, in that only the roller bed is placed against the press belt, without a pressurized fluid pressure medium being introduced into the pressure pad.
  • a purely isobaric mode of operation is also possible in that the roller bed is not placed against the press belt, but only a fluid pressure medium maintains the pressure in the pressure pad.
  • isobar / isochor both the roller bed is placed against the press belt and a fluid pressure medium under pressure is introduced into the pressure pad.
  • a further pressure chamber is used to exert pressure on the roller bed.
  • This is arranged on the side of the pressure plate facing away from the press belt and is delimited in the vertical direction by the pressure plate and a closure located in the press frame, and in the horizontal direction by side seals which are designed in the same way as the sliding surface seals for the pressure pad.
  • a disadvantage of this known design of a double belt press that can be operated isobarically / isochorously is that leakage of fluid pressure medium can occur on the side seals of the pressure chamber arranged on the side of the pressure plate facing away from the press belt, in particular at higher pressures, and can contaminate the press frame and the material to be pressed .
  • the material to be pressed often requires treatment during the pressing at elevated temperature. To do this, the printing plate is heated to the required temperature.
  • the known sealing materials for the side seals consist of plastic or elastomers, which are only resistant up to temperatures of approx. 270 ° C. At higher temperatures, the side seals of this pressure chamber are therefore destroyed, which ultimately leads to the failure of the pressurization by the pressure chamber and thus to a time-consuming and costly repair of the double belt press. This double belt press is therefore not suitable for use at higher temperatures.
  • a heatable pressing device is known from CH-A-250 131, which is suitable, for example, for gluing veneers.
  • the pressing device has two outer plates, which are connected by means of an elastic frame, so that a cushion is formed, into which a heating fluid can be introduced and pressurized.
  • the elastic frame is made of bent sheets.
  • the invention has for its object to design an isochoric or combined isochoric / isobar operated double belt press in such a way that no leakage of pressure medium can occur, the pressure plate being able to perform a large stroke.
  • the advantages that can be achieved with the invention are, in particular, that no leakage of pressure medium can occur in the shape-compensating plate according to the invention due to the hermetic lateral edge seal. Contamination of the press and the material to be pressed is therefore excluded with certainty.
  • the shape compensation plate contains no plastics, so that the double belt press can also be used for high temperatures. With the help of the shape compensation plate, deflections in the pressing area of the double belt press, in particular the press frame, are compensated, as a result of which a better dimensionally stable product is produced on the double belt press.
  • the shape compensation plate contains a metallic liquid as the fluid pressure medium.
  • Metallic liquids have a very good thermal conductivity, so that unhindered heat transfer between the press belts and a heat exchange plate located plane-parallel in the press frame is guaranteed. This leads to a qualitatively improved pressed product and allows the double belt press to be operated at higher speeds.
  • the shape compensation plate is divided into a plurality of individual strip-shaped shape adjustment plates lying next to one another. This gives you the opportunity to process pressed material with different widths in the double belt press.
  • the shape-compensating plate according to the invention can be used successfully not only in continuously operating double belt presses but also in discontinuously operating single or multiple day presses. Such a single or multi-day press is described by the technical teaching contained in the characterizing part of patent claim 7.
  • the continuously operating double belt press 1 shown in FIGS. 1 and 2 consists of an upper press belt unit 2 and a lower press belt unit 3, which are arranged one above the other.
  • the press belt units 2, 3 in turn consist of two each, in bearing bridges 38, 39 rotatably mounted deflection drums 4, 5 or 6, 7 and an endless press belt 8, 9 together.
  • the press belt 8, 9, which usually consists of a high-tensile steel band, is guided around the deflection drums 4, 5 or 6, 7 and tensioned by means of hydraulic cylinders 10 arranged in the bearing bridges 38, 39.
  • At least one deflection drum of each press belt unit 2, 3 is driven by a motor, so that the two press belts 8, 9 move according to the arrows in the deflection drums 5, 6.
  • the bearing bridges 38, 39 are fastened to the press frame 40, 41, which is indicated schematically in FIG.
  • the press frame 40, 41 is not shown in Figure 2 for reasons of clarity.
  • the detailed design of the press frame can be found, for example, in DE-OS 32 34 082.
  • reaction zone 11 Between the lower belt run of the upper press belt 8 and the upper belt run of the lower press belt 9 is the reaction zone 11, in which the material web 12 leading from right to left in the drawings is pressed under surface pressure during the passage through the double belt press 1.
  • pressure plates 13 are arranged in the press frame 40, 41 of the double belt press 1, of which the surface pressure is mechanically applied to the inside of the press belts 8, 9 and then transferred by them to the material web 12 , which is an isochoric double belt press.
  • a roller bed consisting of stationary rollers 14 is used to generate the mechanical surface pressure between the pressure plate 13 and the inside of the press belt 8, 9.
  • roller bed used for mechanical pressure transmission can be seen in more detail in FIG. 3 in a perspective view.
  • 13 support bearing strips 16 are arranged in the pressure plate.
  • These support bearing strips 16 there are support shafts 17 on which the rollers 14 are arranged in rows parallel to the feed direction of the press belts 8, 9.
  • the rollers 14 have a smaller length than the width of the pressure plate 13, so that a plurality of rollers 14 are arranged side by side on a support shaft 17.
  • the rollers 14 are in two adjacent rows half a roller width offset from each other by replacing every second support bearing bore 18 with an opening 19 which is slightly larger than the diameter of the roller 14.
  • the roller bed can additionally be surrounded by one or more sliding surface seals 20, which are arranged in the pressure plate 13 and are applied with a surface to the press belt 8, 9, so that the press belt 8, 9 slides along these sliding surface seals 20.
  • the sliding surface seal 20 is closed in a ring shape, so that the roller bed lies in an enclosed space and can be filled with lubricant for the rollers.
  • the cavity between two rollers 14 can also be provided with a filler 15 in order to improve the lubrication by forming capillary gaps between the roller 14, the support bearing strips 16 and the pressure plate 13.
  • the space enclosed by the sliding surface seal 20 can also be provided with a fluid pressure medium, which additionally exerts a hydraulic pressure on the inside of the press belts 8, 9. Such a configuration is then a double belt press working in a combined isobar / isochoric manner.
  • the pressure plate 13 consists of a support plate 42 in which the support bearing strips 16 for the roller bed are fastened, an adjoining shape compensation plate 21 and a rigid heat exchange plate 43.
  • the support plate 42 is preferably designed to be flexible.
  • In the heat exchange plate 43 there are bores 44 through which a fluid heat transfer medium can flow.
  • the heat exchange plate 43 can be heated or cooled, so that heat can be supplied to or removed from the material web 12 via the shape-compensating plate 21, the carrier plate 42 and the press belt 8, 9.
  • the heat exchange plate 43 can be dispensed with and the shape compensation plate 21 directly on the press frame 40, 41 may be arranged.
  • Such heat exchange can be achieved, for example, by supplying or discharging the heated or cooled pressure medium located in the space between the sliding surface seals 20, so that heat is exchanged between the press belt 8, 9 and the pressure medium by convection due to the flow can.
  • the shape-compensating plate 21 according to the invention arranged on the back of the carrier plate 42, that is to say on the side of the roller bed facing away from the press belt 8, 9, is composed of two plates arranged parallel to one another and at a certain distance from one another, namely a base plate 22 and a cover plate 23 , as can be seen in Figure 5.
  • the base and cover plate 22, 23 consist of metal, for example steel.
  • An elastic bellows 24 runs along the edge of the base plate 22 and cover plate 23 and is attached at one end to the base plate 22 and at the other end to the cover plate 23.
  • a chamber 25 is formed between the base plate 22 and the cover plate 23, which is hermetically sealed laterally with the elastic bellows 24.
  • this chamber 25 which is sealed off from the outside, there is a fluid under pressure as the pressure medium.
  • This fluid can be a liquid under pressure, for example oil.
  • a gas under pressure into this chamber 25.
  • a metallic liquid such as mercury or wood metal, is particularly preferred.
  • Wood metal is a low-melting alloy of bismuth, lead, tin and cadmium. If the material web 12 to be pressed is simultaneously heated in the double belt press 1 under the action of pressure, it is also possible to choose an alloy or a metal as the content for the chamber 25 which is molten at the temperature to be applied to which the heat exchange plate 43 is heated for example tin. Due to the hermetic seal by the elastic bellows 24, leakage of the fluid pressure medium from the shape-compensating plate 21 is avoided with certainty.
  • the elastic bellows 24, which laterally surrounds the chamber 25, has an approximately semicircular cross section. It is composed of individual, superimposed, rectangular metal foils or sheets 26, the individual layers of the metal foils or sheets 26 being welded into rings. For example, a high tensile spring steel or stainless steel is suitable as material for these sheets.
  • This sheet metal ring package is then bent so that it has a semicircular to U-shaped cross section, as can be seen in FIG. 5, and is welded to one another at the edges. This structure gives the laminated core a high degree of elasticity.
  • the laminated core is then placed at one end on the base plate 22 and at the other end on the cover plate 23, the laminated core at the corners of the plates 22, 23 being bent in a circle by approximately 90 ° to form a U-quarter curve. Finally, the ends of the laminated core lying against the plates 22, 23 are fastened to the plates 22, 23. This attachment can also be carried out by means of a weld seam.
  • the individual metal foils or sheets 26 can also consist of electroformed parts, which are already galvanically deposited in the desired semicircular shape and then welded to one another at the edges 27. This eliminates the need to bend the laminated core into a semicircular shape.
  • the surface pressure exerted by the pressure plate 13 fastened in the press frame 40, 41 acts on the material web 12 via the roller bed and the press belts 8, 9.
  • an additional hydraulic pressure acts on the material web 12 from the fluid pressure medium located in the space between the sliding surface seals 20. Because of the pressure applied, the material web 12 emits reaction forces which are introduced into the pressure plate 13 via the roller bed and are absorbed by the press frame 40, 41 in which the pressure plate 13 is fastened.
  • the pressure plate 13 consists of a carrier plate 42 and the shape-compensating plate 21. If bends occur in the roller bed or in the press frame 40, 41, these bends are counteracted by the isobaric pressure behavior of the fluid pressure medium located in the chamber 25 of the shape-adjustment plate 21. This counteraction is supported by the flexibility of the support plate 42.
  • the shape compensation plate 21 consists of metallic materials. These are stable even at elevated temperatures. Thus, the double belt press 1 equipped with the shape compensation plate 21 according to the invention can be used reliably even at elevated temperatures.
  • a support plate 28 can be arranged in the chamber 25 to support it.
  • the support plate 28 is arranged essentially parallel to the base plate 22 and cover plate 23.
  • the edge region 29 of the support plate 28 is slightly beveled.
  • the beveled edge region 29 is arranged in the inner curvature of the bellows 24, so that the bellows 24 is supported on the side facing the chamber 25 by the beveled edge region 29.
  • Particularly high reaction forces acting on the elastic bellows 24 are then absorbed by the support plate 28.
  • This support plate 28 can consist of copper, so that good thermal conductivity is also ensured in the chamber 25. This may be necessary in particular if a metal is selected as the fluid pressure medium in the chamber 25, which becomes molten at the operating temperature of the double belt press 1 or if particularly large amounts of heat between the heat exchange plate 43 and the Press belt 8, 9 to be transferred. If it is desired to increase the elasticity of the beveled edge region 29 of the support plate 28, incisions 45 can be made in the beveled edge region 29.
  • a further embodiment for the shape-compensating plate 21 can be seen in FIG.
  • a bore 30 is made in the upper cover plate 23.
  • the fluid pressure medium can be fed into the chamber 25 through this bore 30, so that the pressure in the chamber 25 can advantageously be varied.
  • the shape compensation plate 21 only needs to be filled with the fluid pressure medium when it is actually needed. With such an embodiment, a form compensation plate 21 that can be switched on and off can thus be realized.
  • the shape compensation plates 21 With the shape compensation plates 21 according to the invention, multi-format double belt presses can also be realized. Since the pressurized press belts 8, 9 are supported in the reaction zone 11 against the material web 12, this extends over the entire width of the reaction zone 11 in conventional double belt presses. In order to be able to use narrower material webs 12 as well, the shape-compensating plate can be used in several transverse, strips extending in the longitudinal direction can be divided, each strip being designed as a separate, self-contained shape-compensating plate. If desired, each strip-shaped shape compensation plate can also be designed so that it can be switched on and off separately.
  • Such a strip-like arrangement of a plurality of shape compensation plates 31, 32 can be seen in FIG. 7, in which the pressure plate 13 with a roller bed is shown in a top view, the carrier plate 42 being partially omitted in order to show the shape compensation plates 31, 32 located underneath.
  • These strip-shaped shape compensation plates 31, 32 are arranged with the desired width and in the desired number in the pressure plate 13. The width of the material web 12 is then selected so that it is just covered by one or more shape compensation plates 31, 32. This means that there are deflections at precisely the points in the roller bed compensates where the material web is pressurized so that ultimately a material web 12 lying within the thickness tolerances is again generated.
  • the shape-compensating plate according to the invention can be used not only in a continuously operating double belt press, but also in a discontinuously operating deck press 33, as is shown schematically in FIG.
  • the material to be pressed 36 is compressed between two press plates 34 and 35.
  • the pressure plates 34, 35 have bores 46 through which a heat transfer medium can be passed so that they can be heated or cooled.
  • discrepancies and thickness tolerances in the pressed material 36 and the pressing plates 34, 35 as well as deformations of the press yoke and press table caused by load absorption can form local pressure differences and cause the pressing plates 34, 35 to warp, which ultimately leads to differences in thickness in the pressing material 36 and thus to rejects leads.
  • Such warping of the pressing plates 34, 35 is avoided according to the invention in that the shape-compensating plate 37 according to the invention is fastened to the pressing plates 34, 35 on the side facing the material 36 to be pressed.
  • a support plate can be dispensed with, that is to say the shape-compensating plate 37 can rest directly on the pressed material 36.
  • the shape-compensating plate 37 is designed in accordance with the above exemplary embodiments and absorbs local pressure differences from the pressed material 36, whereby warping or warping of the pressed plates 34, 35 is avoided, so that a pressed material 36 lying within the desired thickness tolerances is generated.
  • the shape-compensating plate 37 according to the invention can be used not only in single-day presses, but also in multi-day presses. This is done in the same way as for the single-day presses, that is, they are arranged between the material to be pressed and the press plate.
  • an attachment of the shape compensation plate 37 to the pressure plates 34, 35 is not absolutely necessary, it is sufficient if the shape compensation plates 37 between the press plate 34, 35 and the material to be pressed 36 into the Press 33 can be inserted.
  • the shape-compensating plates 37 according to the invention in the case of single- or multi-day presses, the previously customary press pads, which were destroyed after a few press cycles at the latest and therefore had to be discarded, can be replaced by the permanent shape-compensating plate 37.
  • the heat transfer which is less obstructed than in the case of the non-metallic press pads, and the isobaric pressure, result in better compliance with the thickness tolerances of the material to be pressed 36, as in the previously used press pads, and saves the additional expenses incurred by replacing the used press pads.

Claims (23)

  1. Plaque d'égalisation de forme, caractérisée par deux plaques (22, 23) en métal, parallèles l'une à l'autre, disposées à une certaine distance l'une de l'autre, et au bord desquelles, et en faisant le tour, est fixé un soufflet élastique (24), jouant le rôle de joint d'étanchéité latéral, tandis que la chambre (25) formée par les plaques (22, 23) et le soufflet élastique (24) est remplie par un fluide, plaque d'égalisation de forme caractérisée en ce que le soufflet élastique (24) se compose de feuilles ou tôles métalliques rectangulaires séparées (26), qui sont courbées pour obtenir une section transversale semi-circulaire et qui sont soudées ensemble sur les bords (27) pour constituer un paquet de tôles.
  2. Plaque d'égalisation de forme selon la revendication 1, caractérisée en ce que le soufflet élastique (24) a une section transversale à peu près semi-circulaire.
  3. Plaque d'égalisation de forme selon la revendication 1 ou la revendication 2, caractérisée en ce que les feuilles ou tôles métalliques (26) sont constituées d'un acier à ressorts ou acier spécial ayant une résistance élevée à la traction.
  4. Plaque d'égalisation de forme selon la revendication 3, caractérisée en ce que la fixation du soufflet élastique (24) sur les plaques (22, 23) s'effectue par soudage.
  5. Plaque d'égalisation de forme selon une des revendications 1 à 4, caractérisée en ce que dans la chambre (25) est disposée une plaque de soutien (28) en métal, essentiellement parallèle aux plaques (22, 23).
  6. Plaque d'égalisation de forme selon la revendication 5, caractérisée en ce que la plaque de soutien (28) est en cuivre.
  7. Plaque d'égalisation de forme selon la revendication 5 ou la revendication 6, caractérisée en ce que la plaque de soutien (28) a, au voisinage de la courbure interne du soufflet élastique (24), une zone de bordure (29) légèrement chanfreinée.
  8. Plaque d'égalisation de forme selon la revendication 7, caractérisée en ce que la zone de bordure chanfreinée (29) comporte des entailles (45).
  9. Plaque d'égalisation de forme selon une des revendications 1 à 8, caractérisée en ce que le fluide se trouvant dans la chambre (25) de la plaque d'égalisation de forme (21, 37) est sous pression.
  10. Plaque d'égalisation de forme selon la revendication 9, caractérisée en ce que pour le fluide sous pression il s'agit d'un métal liquide.
  11. Plaque d'égalisation de forme selon la revendication 10, caractérisée en ce qu'il s'agit pour le métal liquide de mercure.
  12. Plaque d'égalisation de forme selon la revendication 10, caractérisée en ce qu'il s'agit pour le métal liquide de métal de Wood, qui est constitué d'un alliage de bismuth, de plomb, d'étain et de cadmium.
  13. Presse d'égalisation de forme selon la revendication 9, caractérisée en ce que, pour le fluide sous pression, il s'agit d'un métal fondant à une température plus élevée, qui devient liquide par fusion pour la température devant être appliquée dans la presse à doubles bandes (1) ou dans la presse à étages (33).
  14. Presse d'égalisation de forme selon la revendication 13, caractérisée en ce que pour le métal, il s'agit d'étain.
  15. Presse d'égalisation de forme selon une des revendications 1 à 14, caractérisée en ce que dans la plaque supérieure (23) des plaques (22, 23) de la plaque d'égalisation de forme (21, 37) est pratiqué un perçage (30) par lequel le fluide sous pression peut être amené dans la chambre (25).
  16. Plaque d'égalisation de forme selon une des revendications 1 à 15, caractérisée en ce qu'elle comporte plusieurs zones partielles individuelles séparées (31, 32), en forme de bandes, placées les unes à côté des autres en direction transversale et s'étendant en direction longitudinale.
  17. Presse à doubles bandes fonctionnant en continu pour la fabrication de bandes sans fin de matière, telles qu'agglomérés laminés, plaques de copeaux ou de fibres, contreplaqué ou analogues, avec un bâti de presse rigide, avec des tambours de renvoi montés, de façon à pouvoir tourner, sur des consoles du bâti de la presse, avec une bande de pressage supérieure et une bande inférieure de pressage, sans fin, guidées sur les tambours de renvoi, tandis qu'entre les côtés externes, placés l'un en face de l'autre, des bandes de pressage est formée la zone de réaction, dans laquelle la bande de matière est guidée et soumise à une pression superficielle, avec des plaques de pression disposées sur le bâti de la presse, dont la pression superficielle est transmise à la bande de pressage par l'intermédiaire d'un lit de rouleaux disposé dans la plaque de pression, et éventuellement avec une chambre de pression supplémentaire, qui est délimitée latéralement par un joint d'étanchéité annulaire à surface glissante, disposée sur la plaque de pression et entourant refermésur lui-même le lit de rouleaux, joint qui s'applique par une surface sur la bande de pressage, cette chambre de pression contenant un fluide sous pression, presse à doubles bandes caractérisée en ce que la plaque de pression (13) est constituée d'une plaque porteuse (42) dans laquelle est fixé le lit de rouleaux, et d'une plaque d'égalisation de forme selon une des revendications 1 à 16, contre la face de la plaque porteuse (42) du côté opposé à la bande de pressage (8, 9).
  18. Presse à doubles bandes selon la revendication 17, caractérisée en ce que, sur le côté opposé à la bande de pressage (8, 9) de la plaque d'égalisation de forme (21) sur le bâti de presse (40, 41), est disposée une plaque rigide d'échange thermique (43).
  19. Presse à doubles bandes selon la revendication 18, caractérisée en ce que la plaque d'échange thermique (43) a des perçages (44) à travers lesquels s'écoule un fluide caloporteur.
  20. Presse à doubles bandes selon la revendication 18 ou la revendication 19, caractérisée en ce que la plaque d'échange thermique (43) est échauffée.
  21. Presse à doubles bandes selon la revendication 18 ou la revendication 19, caractérisée en ce que la plaque d'échange thermique (43) est refroidie.
  22. Presse à doubles bandes selon une des revendications 17 ou 21, caractérisée en ce que la plaque porteuse (42) est constituée par une plaque métallique flexible.
  23. Presse à un ou plusieurs étages fonctionnant de façon discontinue pour la fabrication de matériaux en morceaux détachés, avec un bâti de presse dans lequel sont disposées des plaques de pressage, entre lesquelles est pressé le produit de pressage, presse caractérisée en ce que sur les plaques de pressage (34, 35), sur le côté tourné vers le produit de pressage (36), est disposée la plaque d'égalisation de forme (37) selon une des revendications 1 à 17.
EP92109516A 1991-08-23 1992-06-05 Presse à doubles bandes Expired - Lifetime EP0529214B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4128024A DE4128024A1 (de) 1991-08-23 1991-08-23 Kontinuierlich arbeitende doppelbandpresse
DE4128024 1991-08-23

Publications (3)

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EP0529214A2 EP0529214A2 (fr) 1993-03-03
EP0529214A3 EP0529214A3 (en) 1993-06-02
EP0529214B1 true EP0529214B1 (fr) 1996-04-24

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EP92109516A Expired - Lifetime EP0529214B1 (fr) 1991-08-23 1992-06-05 Presse à doubles bandes

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US (1) US5303644A (fr)
EP (1) EP0529214B1 (fr)
JP (1) JPH05200591A (fr)
DE (1) DE4128024A1 (fr)
RU (1) RU2085391C1 (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2116499T3 (es) * 1994-10-12 1998-07-16 Hymmen Theodor Gmbh Dispositivo para la fabricacion continua de materiales planos en varias capas.
IT1306962B1 (it) * 1999-01-18 2001-10-11 Pierluigi Bolzoni Metodo ed impianto per il trattamento termico di fogli di legno
DE19937694B4 (de) * 1999-08-10 2004-11-25 Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg Plattenpresse, insbesondere Einetagenpresse
US6908295B2 (en) * 2000-06-16 2005-06-21 Avery Dennison Corporation Process and apparatus for embossing precise microstructures and embossing tool for making same
US6481188B1 (en) 2000-06-30 2002-11-19 Owens Corning Fiberglas Technology, Inc. Apparatus and method for sealing an article
DE10248387B4 (de) * 2002-10-17 2005-03-17 Giesecke & Devrient Gmbh Doppelbandpresse
JP5634395B2 (ja) 2008-06-19 2014-12-03 テイジン・アラミド・ビー．ブイ． ポリオレフィンフィルムの製造法
US20100294644A1 (en) * 2009-05-20 2010-11-25 Zanaqua Technologies Heat exchanger
WO2011073331A1 (fr) * 2009-12-17 2011-06-23 Dsm Ip Assets B.V. Procédé de fabrication de feuille de matériau multicouche, feuille de matériau multicouche et son utilisation
CN102303349B (zh) * 2011-07-08 2013-11-27 中国林业科学研究院林业新技术研究所 一种模块化结构的连续压机
CN102259373B (zh) * 2011-07-08 2013-11-06 中国林业科学研究院林业新技术研究所 一种用于加工板材的辊盘式连续压机
CN102241045B (zh) * 2011-07-08 2013-11-06 中国林业科学研究院林业新技术研究所 一种辊盘式连续压机
WO2014052998A1 (fr) * 2012-10-05 2014-04-10 Berndorf Band Gmbh Presse a double bande
AT516907A1 (de) * 2015-07-28 2016-09-15 Berndorf Band Gmbh Doppelbandpresse mit begrenztem Ausgleich einer Pressspaltbreite
ITUB20160504A1 (it) 2016-01-15 2017-07-15 System Spa Compensatore di formato per un dispositivo di pressatura
ITUA20161363A1 (it) * 2016-03-04 2017-09-04 System Spa Dispositivo di pressatura
JP6334795B1 (ja) * 2017-09-05 2018-05-30 プロセスシステム株式会社 ダブルベルトプレス装置および誘導加熱プレスモジュール
US10912224B2 (en) * 2018-05-30 2021-02-02 Amazon Technologies, Inc. Thermally conductive vibration isolating connector
US11054193B2 (en) 2018-05-30 2021-07-06 Amazon Technologies, Inc. Vehicle with vibration isolated electronics
DE102018118212B3 (de) * 2018-07-27 2020-01-30 Held Technologie Gmbh Gleitflächendichtung für eine kontinuierlich arbeitende Doppelbandpresse und Doppelbandpresse

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH25013A (de) * 1901-09-12 1903-03-15 Hansen Ellehammer Jacob Christ Apparat zur Herstellung von Cigaretten
US2142932A (en) * 1935-03-11 1939-01-03 Beard Veneer Products Inc Plywood press
CH250131A (de) * 1945-04-14 1947-08-15 Ley Emil Heizbare Pressvorrichtung.
US2627628A (en) * 1949-08-25 1953-02-10 Rca Corp Molding cushion
CH327433A (de) * 1954-01-15 1958-01-31 Voelskow Peter Einrichtung zum kontinuierlich fortschreitenden Pressen
BE639082A (fr) * 1962-10-24 1900-01-01
DE1241405B (de) * 1964-09-18 1967-06-01 Kannegiesser & Co Maschinenfab Formkoerperbuegelpresse zum Heissverkleben von Bekleidungsstueckteilen od. dgl.
CH442730A (de) * 1965-09-14 1967-08-31 Bell Ag Maschf Presskissen zum gleichmässigen Pressen von plattenförmigen Körpern
BE724136A (fr) * 1967-11-23 1969-05-19
GB1270110A (en) * 1968-08-05 1972-04-12 Ici Ltd Improvements in or relating to pressing processes
US3619310A (en) * 1969-11-06 1971-11-09 Ici Ltd Method of making liquid-filled pressure-distributing pads used in presses
DE1963806C3 (de) * 1969-12-19 1974-04-11 Wsesojusnij Nautschno-Issledowatel' Skij I Konstruktorskij Institut Derewoobrabatywajuszego Maschinostrojenija, Moskau Kontinuierlich arbeitende Preßeinrichtung zur Verkleidung der Oberflächen von flachen Werkstücken durch Verleimung
US3817803A (en) * 1972-06-19 1974-06-18 Fmc Corp Method of making a cellular cushioning structure
US4190484A (en) * 1975-10-20 1980-02-26 Rembert Duvelius Press for producing shaped articles
JPS5310673A (en) * 1976-07-16 1978-01-31 Sounosuke Nagato Improvement related to continuous molding and vulcanizing method for high molecular long material
DE2724056C3 (de) * 1977-05-27 1979-11-22 Fa. Carl Freudenberg, 6940 Weinheim Ausgleichsplatte für eine Vulkanisierpresse oder ähnliche Pressen
US4247963A (en) * 1979-04-10 1981-02-03 Lakshmi Reddi Liquid support construction
DE2922151A1 (de) * 1979-05-31 1980-12-11 Sandvik Conveyor Gmbh Doppelbandpresse
DE2937410A1 (de) * 1979-09-15 1981-04-02 Into Solymar Benalmadena Costa Malaga Kerttula Kontinuierlich arbeitende plattenpresse
DE3123291A1 (de) * 1981-06-12 1983-01-05 Held, Kurt, 7218 Trossingen Vorrichtung zum aufbringen einer flaechenpressung
DE3304754C2 (de) * 1982-02-27 1985-09-12 Held, Kurt, 7218 Trossingen Verfahren und Vorrichtung zur Stützung der Pressbänder an wälzkörpergestützten Doppelbandpressen
EP0087651B2 (fr) * 1982-02-27 1994-06-08 Kurt Held Dispositif pour soutenir les bandes de pressage par des rouleaux dans des presses à double bande
JPS59191600A (ja) * 1983-04-15 1984-10-30 Hitachi Ltd ホツトプレス
DE3431520A1 (de) * 1984-08-28 1986-07-10 G. Siempelkamp Gmbh & Co, 4150 Krefeld Kontinuierlich arbeitende beschichtungspresse
DE3534478C2 (de) * 1985-09-27 1995-01-26 Held Kurt Doppelbandpresse zum kontinuierlichen Verpressen von Werkstoffbahnen bei erhöhten Temperaturen
DE3616619C2 (de) * 1986-05-16 1994-11-17 Held Kurt Dichtungsanordnung an einer Doppelbandpresse und Verfahren zur Herstellung der zugehörigen Dichtungskörper
JPH0832378B2 (ja) * 1988-11-18 1996-03-29 株式会社名機製作所 多段プレス装置

Also Published As

Publication number Publication date
RU2085391C1 (ru) 1997-07-27
EP0529214A3 (en) 1993-06-02
JPH05200591A (ja) 1993-08-10
US5303644A (en) 1994-04-19
DE4128024A1 (de) 1993-02-25
EP0529214A2 (fr) 1993-03-03

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