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EP0842040B1 - Double band press for producing and/or coating web-shaped or plate-shaped workpieces of all kinds - Google Patents

Double band press for producing and/or coating web-shaped or plate-shaped workpieces of all kinds Download PDF

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Publication number
EP0842040B1
EP0842040B1 EP97920574A EP97920574A EP0842040B1 EP 0842040 B1 EP0842040 B1 EP 0842040B1 EP 97920574 A EP97920574 A EP 97920574A EP 97920574 A EP97920574 A EP 97920574A EP 0842040 B1 EP0842040 B1 EP 0842040B1
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EP
European Patent Office
Prior art keywords
pressure
press
band
heat
rolls
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EP97920574A
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German (de)
French (fr)
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EP0842040A1 (en
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Theodor Hymmen KG
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Theodor Hymmen KG
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    • 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
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/34—Heating or cooling presses or parts thereof
    • 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
    • B30B5/065—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 using anti-friction means for the pressing band
    • B30B5/067—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 using anti-friction means for the pressing band using anti-friction roller means

Definitions

  • the invention relates to a double belt press for manufacturing and / or Coating of sheet or plate-shaped workpieces of all kinds, in which the Pressed material between the facing belt strands of two endless, continuous revolving press belts a reaction zone in which it with pressure and Heat is applied, passes through and in the reaction zone each band strand at least one pressure chamber is assigned to the one facing the belt strand Side is open, has circumferential seals that are supported on the belt strand, limited on the side facing away from the belt strand by a pressure plate and is provided with pressing rollers which are supported on the belt strand.
  • EP 295 427 discloses a device for applying a surface pressure Workpieces driven on press belt, one press belt around two deflection rollers 2 is led.
  • a workpiece web 3 is arranged on the underside of the press belt, which is formed under the influence of pressure and heat.
  • a pressure and heating plate is provided, which seals forms a sealed cavity adjacent to the press belt.
  • a gaseous medium is provided which is heatable and pressure on the cavity Press belt exercises. An air cushion is thus formed, which extends over the entire length exerts approximately the same pressure on the workpiece path.
  • a press device is known, the rotating press belts has between which a workpiece to be formed is received. At the Back of the press belts are arranged rollers that a certain amount on the press belt Exert pressure. When performing the press belt is in the area of the rollers considerable pressure is exerted on the workpiece while in the area between only slight pressure is applied to the rollers.
  • JP 63 039 309 A a continuous pressure chamber is known from JP 63 039 309 A, in which a workpiece can be carried out.
  • the invention has for its object in the reaction zone of the double belt press the pressure load on the sheet or plate-shaped that passes through the press Workpiece and the intensity of heat transfer or heat extraction Training to be adjustable in a relatively large range depending on the product.
  • This object is achieved in that between the press rolls and the pressure plate are arranged the bearing rollers associated bearing rollers fluid pressure medium in a short circuit the pressure chamber and one outside the Pressure chamber lying heater or a cooling device turbulent flows through and to change the intensity of the heat transfer the working pressure of the fluid pressure medium in the pressure chamber or the speed of the Media is adjustable.
  • the pressure acting on the workpiece is on the one hand in the area of the reaction zone the double belt press through the press rollers arranged in the pressure chamber or chambers and on the other hand determined by the working pressure of the fluid pressure medium.
  • the fluid pressure medium flows through the pressure chamber in a turbulent manner, it is thereby compared to a laminar flow the heat transfer from the heated Pressure medium or the cold transfer from the cooled pressure medium to the working area of the press belt and thus significantly improved on the workpiece.
  • the Intensity of heat supply to the workpiece or heat dissipation from the workpiece can by increasing the working pressure or the speed of the printing medium be significantly increased.
  • the pressure chamber is composed of several cassettes and each cassette in a frame rotatably mounted bearing rollers and press rollers has a heated, fluid pressure medium flowing through it in a turbulent manner and in each cassette the working pressure and the speed of the fluid printing medium are adjustable.
  • the pressure chamber 1 on the lower side through the working strand of an endless press belt 2, on which a seal 3 is supported, the slidably mounted in a circumferential groove 4 of the side walls 5 of a pressure plate 6 is.
  • the seal 3 is supported in the groove 4 from an O-ring 7, which delimits a groove chamber 8 on one side, into which a pressure medium is introduced, through which the seal 3 is pressed non-positively on the press belt 2 becomes.
  • the work of the press belt 2 press rollers 9 are assigned, which are on bearing rollers Support 10.
  • bearing rollers 10 and the press rollers 9 can in one on the pressure plate 6th fixed frame be rotatably mounted. This frame is together with the Pressure plate using piston-cylinder units able to press belt 2 adjustable for height adjustment.
  • a pressure medium becomes turbulent in the pressure chamber during operation of the press moved in a short cycle and is by means of a circulating device 11, which can be designed as a fan, compressor or pump, through a suction line 12 withdrawn from the pressure chamber by a heating or cooling device 13 out and through a pressure line 14 back into the interior 15 of the pressure chamber initiated.
  • a circulating device 11 which can be designed as a fan, compressor or pump, through a suction line 12 withdrawn from the pressure chamber by a heating or cooling device 13 out and through a pressure line 14 back into the interior 15 of the pressure chamber initiated.
  • the pressure of the Pressure medium which can be compressed air or oil, adjustable.
  • the speed at which the pressure medium flows through the pressure chamber 1 is adjustable. In the case of gaseous pressure media, it is preferably 2 to 50 m / sec 10 to 40 m / sec and 4 to 5 m / sec for liquid media.
  • the transition from laminar flow to turbulent flow is caused by the Reynold's index is determined, which is Re ⁇ 2,300 for the turbulent flow.
  • the direction of flow of the pressure medium generally corresponds to the direction of delivery of the material to be pressed in the belt press.
  • the flow direction of the pressure medium However, the direction of conveyance of the material to be pressed can also be opposite.
  • the pressure medium flows through 1, the gaps in the pressure chamber, the be limited by the press belt 2, the press rollers 9 and by the bearing rollers 10.
  • the pressure medium flows through Gaps through the press belt 2, a cage 16 and the press rollers 9 and possibly limited by the side walls 5 of the pressure plate.
  • the bearing rollers 10 can be made of thermal insulation material.
  • the press rollers 9 are in a cage 16 arranged, the supply and discharge of the fluid pressure medium through nozzle 17 or bores of pipes arranged at the end in the pressure chamber takes place, which are provided between the press belt 2 and the cage 16.
  • the cage 16 can be made of a thermal insulation material or with a thermal insulation layer be provided.
  • the cooled or heated pressure medium flows through in the embodiment 2 a small in its dimensions of the interior of the Pressure chamber.
  • the press belt 2 and the press rollers 9 there will be overflow connections.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

PCT No. PCT/DE97/00667 Sec. 371 Date Dec. 5, 1997 Sec. 102(e) Date Dec. 5, 1997 PCT Filed Apr. 2, 1997 PCT Pub. No. WO97/39882 PCT Pub. Date Oct. 30, 1997A double press for making and/or coating of web-shaped or plate-shaped workpieces of all types includes a reaction zone in which the pressure load of the workpiece passing through the press, and the intensity of the heat transfer or the heat removal are designed to be adjustable for individual products over an extended range. Between the pressing rolls (9) and the pressure plate (6), there are disposed bearing rollers (10) associated with the pressing rolls. A liquid pressure-transmitting medium flows turbulently in a short circulatory loop through the pressure chamber and a heating or cooling unit (13) located outside the pressure chamber. The double band presses can be employed in the furniture and electrical industry as well as in other branches of industry where laminated materials are used or processed.

Description

Die Erfindung bezieht sich auf eine Doppelbandpresse zum Herstellen und/oder zum Beschichten von bahn- oder plattenförmigen Werkstücken aller Art, bei der das Preßgut zwischen den einander zugekehrten Bandtrumen zweier endloser, kontinuierlich umlaufender Preßbänder eine Reaktionszone, in der es mit Druck und Wärme beaufschlagt wird, durchläuft und in der Reaktionszone jedem Bandtrum mindestens eine Druckkammer zugeordnet ist, die an der dem Bandtrum zugewandten Seite geöffnet ist, umlaufende, sich am Bandtrum abstützende Dichtungen aufweist, an der dem Bandtrum abgewandten Seite durch eine Druckplatte begrenzt und mit sich am Bandtrum abstützenden Preßrollen versehen ist.The invention relates to a double belt press for manufacturing and / or Coating of sheet or plate-shaped workpieces of all kinds, in which the Pressed material between the facing belt strands of two endless, continuous revolving press belts a reaction zone in which it with pressure and Heat is applied, passes through and in the reaction zone each band strand at least one pressure chamber is assigned to the one facing the belt strand Side is open, has circumferential seals that are supported on the belt strand, limited on the side facing away from the belt strand by a pressure plate and is provided with pressing rollers which are supported on the belt strand.

Die EP 295 427 offenbart eine Vorrichtung zum Aufbringen einer Flächenpressung auf Preßband getriebene Werkstücke, wobei ein Preßband um zwei Umlenkwalzen 2 geführt ist. An der Unterseite des Preßbandes ist eine Werkstückbahn 3 angeordnet, die unter Einwirkung von Druck und Wärme geformt wird. Zur Lagerung des Preßbandes 2 ist eine Druck- und Heizplatte vorgesehen, die über Dichtungen benachbart zu dem Preßband einen abgedichteten Hohlraum ausbildet. In diesem Hohlraum ist ein gasförmiges Medium vorgesehen, das heizbar ist und Druck auf das Preßband ausübt. Somit wird ein Luftkissen ausgebildet, das über die gesamte Länge etwa den selben Druck auf die Werkstückbahn ausübt.EP 295 427 discloses a device for applying a surface pressure Workpieces driven on press belt, one press belt around two deflection rollers 2 is led. A workpiece web 3 is arranged on the underside of the press belt, which is formed under the influence of pressure and heat. For storing the Press belt 2, a pressure and heating plate is provided, which seals forms a sealed cavity adjacent to the press belt. In this A gaseous medium is provided which is heatable and pressure on the cavity Press belt exercises. An air cushion is thus formed, which extends over the entire length exerts approximately the same pressure on the workpiece path.

Aus der EP 492 683 ist eine Preßvorrichtung bekannt, die umlaufende Preßbänder aufweist, zwischen denen ein zu formendes Werkstück aufgenommen ist. An der Rückseite der Preßbänder sind Walzen angeordnet, die auf das Preßband einen gewissen Druck ausüben. Beim Durchführen des Preßbandes wird im Bereich der Walzen ein erheblicher Druck auf das Werkstück ausgeübt, während in dem Bereich zwischen den Walzen nur geringfügiger Druck ausgeübt wird.From EP 492 683 a press device is known, the rotating press belts has between which a workpiece to be formed is received. At the Back of the press belts are arranged rollers that a certain amount on the press belt Exert pressure. When performing the press belt is in the area of the rollers considerable pressure is exerted on the workpiece while in the area between only slight pressure is applied to the rollers.

Ferner ist aus der JP 63 039 309 A eine kontinuierliche Druckkammer bekannt, in der ein Werkstück durchführbar ist.Furthermore, a continuous pressure chamber is known from JP 63 039 309 A, in which a workpiece can be carried out.

Der Erfindung liegt die Aufgabe zugrunde, in der Reaktionszone der Doppelbandpresse die Druckbelastung des bahn- oder plattenförmigen, die Presse durchlaufenden Werkstücks und die Intensität der Wärmeübertragung oder des Wärmeabzuges produktabhängig in einem relativ großen Bereich einstellbar auszubilden.The invention has for its object in the reaction zone of the double belt press the pressure load on the sheet or plate-shaped that passes through the press Workpiece and the intensity of heat transfer or heat extraction Training to be adjustable in a relatively large range depending on the product.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß zwischen den Preßrollen und der Druckplatte den Preßrollen zugeordnete Lagerwalzen angeordnet sind, ein fluides Druckmedium in kurzem Kreislauf die Druckkammer und eine außerhalb der Druckkammer liegende Aufheizeinrichtung oder eine Kühlvorrichtung turbulent durchströmt und zur Veränderung der Intensität der Wärmeübertragung der Arbeitsdruck des fluiden Druckmediums in der Druckkammer oder die Geschwindigkeit des Druckmediums einstellbar ist.This object is achieved in that between the press rolls and the pressure plate are arranged the bearing rollers associated bearing rollers fluid pressure medium in a short circuit the pressure chamber and one outside the Pressure chamber lying heater or a cooling device turbulent flows through and to change the intensity of the heat transfer the working pressure of the fluid pressure medium in the pressure chamber or the speed of the Media is adjustable.

Der auf das Werkstück wirkende Druck wird einerseits im Bereich der Reaktionszone der Doppelbandpresse durch die in der oder den Druckkammern angeordneten Preßrollen und andererseits durch den Arbeitsdruck des fluiden Druckmediums bestimmt.The pressure acting on the workpiece is on the one hand in the area of the reaction zone the double belt press through the press rollers arranged in the pressure chamber or chambers and on the other hand determined by the working pressure of the fluid pressure medium.

Da das fluide Druckmedium turbulent die Druckkammer durchströmt, wird hierdurch gegenüber einer laminaren Strömung der Wärmeübergang von dem aufgeheizten Druckmedium oder der Kälteübergang von dem gekühlten Druckmedium auf das Arbeitstrum des Preßbandes und damit auf das Werkstück wesentlich verbessert. Die Intensität der Wärmezufuhr zum Werkstück oder Wärmeabfuhr vom Werkstück kann durch die Erhöhung des Arbeitsdruckes oder der Geschwindigkeit des Druckmediums erheblich gesteigert werden. Somit sind durch die erfindungsgemäße Ausrüstung der Druckkammer die technischen Möglichkeiten gegeben, um in der Reaktionszone die Druck- und Wärmebelastung dem jeweiligen Werkstück exakt anzupassen und zwar entsprechend den beim Preßvorgang auftretenden technologischen Problemen. Since the fluid pressure medium flows through the pressure chamber in a turbulent manner, it is thereby compared to a laminar flow the heat transfer from the heated Pressure medium or the cold transfer from the cooled pressure medium to the working area of the press belt and thus significantly improved on the workpiece. The Intensity of heat supply to the workpiece or heat dissipation from the workpiece can by increasing the working pressure or the speed of the printing medium be significantly increased. Thus, by the equipment according to the invention the pressure chamber given the technical possibilities to in the reaction zone to adapt the pressure and heat load exactly to the respective workpiece and that according to the technological occurring during the pressing process Problems.

Eine weitere Abstufung in der Druck- und Wärmezufuhr bzw. Kühlung ist dadurch zu erreichen, daß die Druckkammer sich aus mehreren Kassetten zusammensetzt und jede Kassette in einem Gestell drehbar gelagerte Lagerwalzen und Preßrollen aufweist, von einem aufgeheizten, fluiden Druckmedium turbulent durchströmt wird und in jeder Kassette der Arbeitsdruck und die Geschwindigkeit des fluiden Druckmediums einstellbar sind.A further gradation in the pressure and heat supply or cooling is thereby too achieve that the pressure chamber is composed of several cassettes and each cassette in a frame rotatably mounted bearing rollers and press rollers has a heated, fluid pressure medium flowing through it in a turbulent manner and in each cassette the working pressure and the speed of the fluid printing medium are adjustable.

Weitere Merkmale der Erfindung ergeben sich aus den Unteransprüchen.Further features of the invention emerge from the subclaims.

Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt. Es zeigen:

Figur 1
in schematischer Darstellung eine dem Arbeitstrum eines endlosen Preßbandes zugeordnte Druckkammer,
Figur 2
eine Abwandlungsform zu der Ausführung nach der Fig. 1 und
Figur 3
ein Diagramm, bei dem der Druck des fluiden Druckmediums in der Druckkammer auf der Abszisse und die Werte des Wärmeübergangskoeffizienten auf der Ordinate abgetragen sind.
Embodiments of the invention are shown in the drawings. Show it:
Figure 1
a schematic representation of a pressure chamber assigned to the working strand of an endless press belt,
Figure 2
a modification to the embodiment of FIGS. 1 and
Figure 3
a diagram in which the pressure of the fluid pressure medium in the pressure chamber on the abscissa and the values of the heat transfer coefficient are plotted on the ordinate.

In der Figur 1 wird die Druckkammer 1 an der unteren Seite durch das Arbeitstrum eines endlosen Preßbandes 2 begrenzt, an dem sich eine Dichtung 3 abstützt, die gleitbar in einer umlaufenden Nut 4 der Seitenwände 5 einer Druckplatte 6 gelagert ist. In dem dargestellten Ausführungsbeispiel stützt sich die Dichtung 3 in der Nut 4 an einem O-Ring 7 ab, der einseitig eine Nutkammer 8 begrenzt, in die ein Druckmedium eingeführt wird, durch das die Dichtung 3 kraftschlüssig an das Preßband 2 gedrückt wird.In Figure 1, the pressure chamber 1 on the lower side through the working strand of an endless press belt 2, on which a seal 3 is supported, the slidably mounted in a circumferential groove 4 of the side walls 5 of a pressure plate 6 is. In the exemplary embodiment shown, the seal 3 is supported in the groove 4 from an O-ring 7, which delimits a groove chamber 8 on one side, into which a pressure medium is introduced, through which the seal 3 is pressed non-positively on the press belt 2 becomes.

Dem Arbeitstrum des Preßbandes 2 sind Preßrollen 9 zugeordnet, die sich an Lagerwalzen 10 abstützen.The work of the press belt 2 press rollers 9 are assigned, which are on bearing rollers Support 10.

Die Lagerung der Lagerwalzen ist in der Fig. 1 nur schematisch aufgezeigt. Sowohl die Lagerwalzen 10 als auch die Preßrollen 9 können in einem an der Druckplatte 6 befestigten Gestell drehbar gelagert sein. Dieses Gestell ist zusammen mit der Druckplatte unter Verwendung von Kolben-Zylinder-Einheiten in der Lage zum Preßband 2 zur Höhenverstellung verstellbar.The storage of the bearing rollers is shown only schematically in FIG. 1. Either the bearing rollers 10 and the press rollers 9 can in one on the pressure plate 6th fixed frame be rotatably mounted. This frame is together with the Pressure plate using piston-cylinder units able to press belt 2 adjustable for height adjustment.

In der Druckkammer wird während des Betriebes der Presse ein Druckmedium turbulent in einem kurzen Kreislauf bewegt und wird mittels einer Umwälzeinrichtung 11, die als Ventilator, Kompressor oder Pumpe ausgebildet sein kann, durch eine Saugleitung 12 aus der Druckkammer abgezogen, durch eine Heiz- oder Kühlvorrichtung 13 geführt und durch eine Druckleitung 14 wieder in den Innenraum 15 der Druckkammer eingeleitet. Durch eine nicht dargestellte Einrichtung ist der Druck des Druckmediums, das Druckluft oder Drucköl sein kann, einstellbar.A pressure medium becomes turbulent in the pressure chamber during operation of the press moved in a short cycle and is by means of a circulating device 11, which can be designed as a fan, compressor or pump, through a suction line 12 withdrawn from the pressure chamber by a heating or cooling device 13 out and through a pressure line 14 back into the interior 15 of the pressure chamber initiated. By a device, not shown, the pressure of the Pressure medium, which can be compressed air or oil, adjustable.

Auch die Geschwindigkeit, mit der das Druckmedium die Druckkammer 1 durchströmt, ist einstellbar. Sie beträgt bei gasförmigen Druckmedien 2 bis 50 m/sec, vorzugsweise 10 bis 40 m/sec und bei flüssigen Druckmedien 4 bis 5 m/sec.The speed at which the pressure medium flows through the pressure chamber 1 is adjustable. In the case of gaseous pressure media, it is preferably 2 to 50 m / sec 10 to 40 m / sec and 4 to 5 m / sec for liquid media.

Der Übergang von der laminaren Strömung zur turbulenten Strömung wird durch die Reynold'sche Kennziffer bestimmt, die bei der turbulenten Strömung Re ≥ 2.300 beträgt.The transition from laminar flow to turbulent flow is caused by the Reynold's index is determined, which is Re ≥ 2,300 for the turbulent flow.

Die Richtung der Strömung des Druckmediums entspricht im allgemeinen der Förderrichtung des Preßgutes in der Bandpresse. Die Strömungsrichtung des Druckmediums kann jedoch auch der Förderrichtung des Preßgutes entgegengerichtet sein.The direction of flow of the pressure medium generally corresponds to the direction of delivery of the material to be pressed in the belt press. The flow direction of the pressure medium However, the direction of conveyance of the material to be pressed can also be opposite.

An den Stirnseiten der Druckkammer 1 sind quer zur Förderrichtung der Bandpresse verlaufende, mit einer Öffnungsreihe versehene Rohrleitungen angeordnet, durch die an der einen Stirnseite das Druckmedium in die Druckkammer eingeführt und an der anderen Stirnseite das Druckmedium abgesaugt wird. Das Druckmedium durchströmt bei der Ausführung nach der Fig. 1 die Zwischenräume in der Druckkammer, die durch das Preßband 2, die Preßrollen 9 und durch die Lagerwalzen 10 begrenzt werden. Bei der Ausführung nach der Fig. 2 werden die vom Druckmedium durchströmten Zwischenräume durch das Preßband 2, einen Käfig 16 und die Preßrolen 9 und ggf. durch die Seitenwände 5 der Druckplatte begrenzt.At the end faces of the pressure chamber 1 are transverse to the conveying direction of the belt press running pipelines provided with an opening row through which the pressure medium is introduced into the pressure chamber on one end face and on the the other side of the pressure medium is sucked off. The pressure medium flows through 1, the gaps in the pressure chamber, the be limited by the press belt 2, the press rollers 9 and by the bearing rollers 10. In the embodiment according to FIG. 2, the pressure medium flows through Gaps through the press belt 2, a cage 16 and the press rollers 9 and possibly limited by the side walls 5 of the pressure plate.

Um zu verhindem, daß aus dem Innenraum 15 der Druckkammer die Wärme nach außen abfließt, können die Lagerwalzen 10 aus Wärmedämmaterial gefertigt sein.To prevent the heat from the interior 15 of the pressure chamber Flows outside, the bearing rollers 10 can be made of thermal insulation material.

Es besteht auch die Möglichkeit, die Druckplatte 6 und die mit der Druckplatte einstückigen Seitenwände 5 aus einem Wärmedämmmaterial herzustellen oder an der Kammerinnenseite mit einer Wärmedämmschicht zu versehen.There is also the possibility of integrating the pressure plate 6 and the one with the pressure plate To produce side walls 5 from a thermal insulation material or on the To provide the inside of the chamber with a thermal barrier coating.

Bei dem Ausführungsbeispiel nach der Fig. 2 sind die Preßrollen 9 in einem Käfig 16 angeordnet, wobei die Zu- und Abführung des fluiden Druckmediums durch Stutzen 17 oder Bohrungen von stimseitig in der Druckkammer angeordneten Rohrleitungen erfolgt, die zwischen dem Preßband 2 und dem Käfig 16 vorgesehen sind. In the exemplary embodiment according to FIG. 2, the press rollers 9 are in a cage 16 arranged, the supply and discharge of the fluid pressure medium through nozzle 17 or bores of pipes arranged at the end in the pressure chamber takes place, which are provided between the press belt 2 and the cage 16.

Der Käfig 16 kann aus einem Wärmedämmaterial gefertigt oder mit einer Wärmedämmschicht versehen sein.The cage 16 can be made of a thermal insulation material or with a thermal insulation layer be provided.

Das gekühlte oder aufgeheizte Druckmedium durchströmt bei dem Ausführungsbeispiel nach der Fig. 2 einen in seinen Abmessungen kleinen Teil des Innenraums der Druckkammer. Im Bereich der Preßrollen 9 müssen zwischen den einzelnen Teilkammern, die von dem Käfig 16, dem Preßband 2 und den Preßrollen 9 begrenzt werden, Überströmverbindungen vorhanden sein.The cooled or heated pressure medium flows through in the embodiment 2 a small in its dimensions of the interior of the Pressure chamber. In the area of the press rollers 9, between the individual subchambers, limited by the cage 16, the press belt 2 and the press rollers 9 there will be overflow connections.

Das Diagramm nach der Fig. 3 belegt, daß bei steigendem Druck des Druckmediums im Innenraum der Druckkammer der Wärmeübergangskoeffizient vom aufgeheizten Druckmedium auf das Werkstück erheblich ansteigt, so daß die Einstellbarkeit des Druckes des fluiden Druckmediums die Möglichkeit bietet, die Wärmezufuhr zum Werkstück produktabhängig zu steuern.3 shows that with increasing pressure of the pressure medium in the interior of the pressure chamber the heat transfer coefficient from the heated one Print medium on the workpiece increases significantly, so that the adjustability of the Pressure of the fluid pressure medium offers the opportunity to heat the Control the workpiece depending on the product.

Der auf der Ordinate des Diagramms abgetragene Wärmeübergangskoeffizient α durch

  • w = transportierte Wärmemenge pro Zeiteinheit
  • m = wärmetauschende Fläche
  • K = Temperaturdifferenz zwischen der Wärmetauschenden Oberfläche und dem fluiden Druckmedium = treibende Temperaturdifferenz.
    • The heat transfer coefficient α plotted on the ordinate of the diagram by
  • w = amount of heat transported per unit of time
  • m = heat-exchanging surface
  • K = temperature difference between the heat-exchanging surface and the fluid pressure medium = driving temperature difference.

    • Aus dem Diagramm kann man entnehmen, daß bei der Herstellung von Hochdrucklaminaten die Abmessungen der Druckkammer verringert werden können, da bei höherem Arbeitsdruck der Wärmeübergangskoeffizient α sehr hoch ist. From the diagram you can see that in the production of high pressure laminates the dimensions of the pressure chamber can be reduced because at higher Working pressure the heat transfer coefficient α is very high.

    BezugszeichenlisteReference list

    11
    DruckkammerPressure chamber
    22nd
    PreßbandPress belt
    33rd
    Dichtungpoetry
    44th
    NutGroove
    55
    SeitenwandSide wall
    66
    Druckplatteprinting plate
    77
    O-RingO-ring
    88th
    NutkammerGroove chamber
    99
    PreßrollePress roll
    1010th
    LagerwalzeBearing roller
    1111
    UmwälzeinrichtungCirculation device
    1212th
    SaugleitungSuction line
    1313
    KühlvorrichtungCooler
    1414
    DruckleitungPressure line
    1515
    Innenrauminner space
    1616
    KäfigCage
    1717th
    StutzenSupport

    Claims (9)

    1. A double press for making and/or coating of web-shaped or plate-shaped workpieces of all types, wherein the material to be pressed flows through a reaction zone, in which it is impacted with pressure and heat, between a pair of continuous-loop press bands arranged in opposite disposition, and in the reaction zone at least one pressure chamber is assigned to each press band, which is open on the side facing the press band, and including a wraparound seal supported by the press band, said pressure chamber accommodating pressure rolls supported on the press band, characterised in that arranged between the pressing rolls (9) and the pressure plate (6) are bearing rollers (10) associated with the pressing rolls, a liquid pressure-transmitting medium flows turbulently in a short circulatory loop through the pressure chamber and a heating or cooling unit (13) located outside the pressure chamber.
    2. Double band press as claimed in Claim 1, characterised in that the operating pressure of the liquid pressure-transmitting medium or the velocity of the pressure-transmitting medium in the pressure chamber can be adjusted for changing the intensity of the heat transfer.
    3. Double band press as claimed in Claim 1 or 2, characterised in that the bearing rollers (10) are made of heat-insulating material.
    4. Double band press as claimed in Claim 1, characterised in that the pressure rolls (9) are arranged in a cage (16), said pressure-transmitting medium being supplied and discharged between the press band (2) and the cage (6).
    5. Double band press as claimed in Claim 4, characterised in that the cage (16) is made of heat-insulating material or is provided with a heat-insulating layer.
    6. Double band press as claimed in any one of the foregoing claims, characterised in that the pressure plate (6) and the side walls (5) formed in one piece with the pressure plate are made of heat-insulating material or are provided on the interior of the chamber with a heat-insulating layer.
    7. Double band press as claimed in any one of Claims 1 to 4, characterised in that the pressure rolls (9) and the bearing rollers (10) are rotatably mounted in a frame secured to the pressure plate.
    8. Double band press as claimed in any one of the foregoing claims, characterised in that the pressure chamber is comprised of a plurality of cassettes, with each cassette including said pressure rolls and said bearing rollers which are rotatably supported in a frame, and in that either heated or cooled pressure-transmitting medium turbulently flows through each cassette, with the pressure-transmitting medium applying an operating pressure which is adjustable in each cassette.
    9. Double band press as claimed in any one of Claims 1 to 8, characterised in that the liquid pressure-transmitting medium flows turbulently through subspaces of the pressure chamber in a transport direction or opposite to the transport direction of the press bands, said subspaces being bounded by the press band (2), the pressure rolls (9), the bearing rolls (10) and the side walls (5) of the pressure plate or by the press band (2), the cage (16), the pressure rolls (9) and the side walls (5).
    EP97920574A 1996-04-20 1997-04-02 Double band press for producing and/or coating web-shaped or plate-shaped workpieces of all kinds Expired - Lifetime EP0842040B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    DE19615771 1996-04-20
    DE19615771A DE19615771A1 (en) 1996-04-20 1996-04-20 Double belt press for the manufacture and / or for the coating of sheet or plate-shaped workpieces of all kinds
    PCT/DE1997/000667 WO1997039882A1 (en) 1996-04-20 1997-04-02 Double band press for producing and/or coating web-shaped or plate-shaped workpieces of all kinds

    Publications (2)

    Publication Number Publication Date
    EP0842040A1 EP0842040A1 (en) 1998-05-20
    EP0842040B1 true EP0842040B1 (en) 2001-11-21

    Family

    ID=7791933

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP97920574A Expired - Lifetime EP0842040B1 (en) 1996-04-20 1997-04-02 Double band press for producing and/or coating web-shaped or plate-shaped workpieces of all kinds

    Country Status (7)

    Country Link
    US (1) US6009803A (en)
    EP (1) EP0842040B1 (en)
    JP (1) JPH11508188A (en)
    AT (1) ATE209102T1 (en)
    DE (2) DE19615771A1 (en)
    ES (1) ES2163759T3 (en)
    WO (1) WO1997039882A1 (en)

    Families Citing this family (8)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US6152068A (en) * 1998-06-22 2000-11-28 Hunter Douglas Inc. Apparatus for manufacturing an adjustable covering for architectural openings
    US6908295B2 (en) * 2000-06-16 2005-06-21 Avery Dennison Corporation Process and apparatus for embossing precise microstructures and embossing tool for making same
    FR2828284B1 (en) * 2001-08-01 2003-10-31 Bio Merieux METHOD FOR DETECTION AT A SOLID SUPPORT OF A COMPLEXATION OR HYBRIDIZATION BETWEEN AT LEAST TWO MOLECULES BASED ON AN AMPLIFIED SIGNAL AT THE SUPPORT LEVEL
    DE10156853B4 (en) * 2001-11-20 2011-11-24 Giesecke & Devrient Gmbh Double belt press, laminating machine and method for laminating a laminating product
    DE102010007984B4 (en) * 2010-02-15 2012-01-26 Hochland Ag Forming and cooling device for a flowable, melted food mass
    BR112016010087B1 (en) 2013-11-22 2021-09-08 Cytec Industries Inc. METHOD FOR IMPREGNATION OF A FIBROUS MATERIAL WITH A THERMOCURABLE RESIN
    ES2906797T3 (en) * 2017-05-29 2022-04-20 SWISS KRONO Tec AG High pressure laminate manufacturing facility for the manufacture of high pressure laminate and the corresponding operating procedure
    JP7058852B1 (en) * 2021-12-28 2022-04-25 株式会社Sgic Double belt press

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    US2826986A (en) * 1954-01-22 1958-03-18 Andritz Ag Maschf Presses for producing continuous webs of material
    CH552462A (en) * 1971-07-14 1974-08-15 Mets Nv Konstruktiewerkhuizen CONTINUOUSLY WORKING PRESS FOR THE PRODUCTION OF PANELS LIKE CHIPBOARD OR FIBER PANELS.
    DE2922151A1 (en) * 1979-05-31 1980-12-11 Sandvik Conveyor Gmbh DOUBLE BAND PRESS
    DE2937410A1 (en) * 1979-09-15 1981-04-02 Into Solymar Benalmadena Costa Malaga Kerttula CONTINUOUSLY WORKING PLATE PRESS
    DE3028145A1 (en) * 1980-07-24 1982-02-25 Maschinenfabrik J. Dieffenbacher Gmbh & Co, 7519 Eppingen CONTINUOUSLY WORKING PRESS
    DE3046432C2 (en) * 1980-12-10 1983-02-24 Santrade Ltd., 6002 Luzern Double belt press
    DE3135031C2 (en) * 1981-09-04 1983-07-21 Held, Kurt, 7218 Trossingen Double belt press for applying surface pressure
    EP0087651B2 (en) * 1982-02-27 1994-06-08 Kurt Held Apparatus to support pressure bands in a roll-supported double band press
    JPH0233291B2 (en) * 1986-08-05 1990-07-26 Mitsubishi Rayon Eng RENZOKUKAATSUSOCHI
    DE3719976A1 (en) * 1987-06-15 1988-12-29 Hymmen Theodor Gmbh METHOD AND DEVICE FOR APPLYING A SURFACE PRESS TO WORKPIECE DRIVEN BY PRESSURE BELTS
    JP2603353B2 (en) * 1990-04-20 1997-04-23 日本石油株式会社 Continuous production method of polyolefin material
    IT1246728B (en) * 1990-12-21 1994-11-26 Pagnoni Impianti S P A CONTINUOUS PRESS WITH LOW FRICTION SLIDING DEVICE
    EP0550782B1 (en) * 1990-12-24 1995-10-18 Kurt Held Continuous double-band press
    JP2782573B2 (en) * 1993-04-26 1998-08-06 ナストーア株式会社 Continuous substrate molding equipment

    Also Published As

    Publication number Publication date
    DE59705468D1 (en) 2002-01-03
    ATE209102T1 (en) 2001-12-15
    JPH11508188A (en) 1999-07-21
    WO1997039882A1 (en) 1997-10-30
    ES2163759T3 (en) 2002-02-01
    US6009803A (en) 2000-01-04
    DE19615771A1 (en) 1997-10-23
    EP0842040A1 (en) 1998-05-20

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