EP0842040A1 - 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

Info

Publication number
EP0842040A1
EP0842040A1 EP97920574A EP97920574A EP0842040A1 EP 0842040 A1 EP0842040 A1 EP 0842040A1 EP 97920574 A EP97920574 A EP 97920574A EP 97920574 A EP97920574 A EP 97920574A EP 0842040 A1 EP0842040 A1 EP 0842040A1
Authority
EP
European Patent Office
Prior art keywords
press
pressure
belt
double
rollers
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.)
Granted
Application number
EP97920574A
Other languages
German (de)
French (fr)
Other versions
EP0842040B1 (en
Inventor
Werner Pankoke
Rolf RÖTTGER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Theodor Hymmen KG
Original Assignee
Hymmen GmbH Maschinen und Anlagenbau
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 Hymmen GmbH Maschinen und Anlagenbau filed Critical Hymmen GmbH Maschinen und Anlagenbau
Publication of EP0842040A1 publication Critical patent/EP0842040A1/en
Application granted granted Critical
Publication of EP0842040B1 publication Critical patent/EP0842040B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B30B5/04—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

  • Double belt press for the manufacture and / or for the coating of sheet or plate-shaped workpieces of all kinds
  • the invention relates to a double belt press for producing and / or coating sheet or plate-shaped workpieces of all kinds, in which the material to be pressed between the facing belt strands of two endless, continuously rotating press belts is a reaction zone in which there is pressure and heat is acted upon, passes through and in the reaction zone each strip strand is assigned at least one pressure chamber which is open on the side facing the strip strand, has circumferential seals which are supported on the strip strand, is delimited by a pressure plate on the side facing away from the strip strand and is provided with pressing rollers which are supported on the belt strand.
  • the invention is based on the object of designing the pressure load on the sheet-like or plate-shaped workpiece passing through the press and the intensity of the heat transfer or heat removal in a relatively large range in an adjustable manner in the reaction zone of the double belt press.
  • This object is achieved in that between the press rolls and the pressure plate the bearing rolls associated with the press rolls are arranged, a fluid pressure medium in a short circuit flows through the pressure chamber and a heating device outside the pressure chamber or a cooling device turbulently and to change the intensity of the heat transfer of the work ⁇ pressure of the fluid pressure medium in the pressure chamber or the speed of the pressure medium is adjustable.
  • the pressure acting on the workpiece is determined on the one hand in the area of the reaction zone of the double belt press by the press rolls arranged in the pressure chamber or chambers and on the other hand by the working pressure of the fluid pressure medium.
  • Pressure medium or the cold transition from the cooled pressure medium to the working line of the press belt and thus to the workpiece is significantly improved.
  • the intensity of the heat supply to the workpiece or heat dissipation from the workpiece can be increased considerably by increasing the working pressure or the speed of the pressure medium.
  • the equipment of the pressure chamber according to the invention provides the technical possibilities for precisely adapting the pressure and heat load to the respective workpiece in the reaction zone, in accordance with the technological problems that occur during the pressing process.
  • a further gradation in the pressure and heat supply or cooling can be achieved in that the pressure chamber is composed of several cassettes and each cassette has rotatably mounted bearing rollers and pressure rollers in a frame, a heated, fluid pressure medium flows through it turbulently and in each Cassette the working pressure and the speed of the fluid pressure medium are adjustable.
  • FIG. 1 shows a schematic representation of a pressure chamber assigned to the working strand of an endless press belt
  • FIGS. 1 and 2 show a modification to the embodiment of FIGS. 1 and
  • FIG. 3 shows a diagram in which the pressure of the fluid pressure medium in the pressure chamber is plotted on the abscissa and the values of the heat transfer coefficient are plotted on the ordinate.
  • the pressure chamber 1 is delimited on the lower side by the working strand of an endless press belt 2, on which a seal 3 is supported, which is slidably mounted in a circumferential groove 4 in the side walls 5 of a pressure plate 6.
  • the seal 3 is supported in the groove 4 on an O-ring 7, which on one side delimits a groove chamber 8 into which a pressure medium is introduced, through which the seal 3 presses non-positively on the press belt 2 becomes.
  • Press rolls 9, which are supported on bearing rollers 10, are assigned to the working strand of the press belt 2.
  • Both the bearing rollers 10 and the press rollers 9 can be rotatably mounted in a frame attached to the pressure plate 6. This frame can be adjusted together with the pressure plate using piston-cylinder units in the position of the press belt 2 for height adjustment.
  • a pressure medium is moved turbulently in a short circuit in the pressure chamber and is by means of a circulating device 11, which can be designed as a fan, compressor or pump, by a suction Line 12 withdrawn from the pressure chamber, passed through a heating or cooling device 13 and introduced through a pressure line 14 back into the interior 15 of the pressure chamber.
  • the pressure of the pressure medium which can be compressed air or pressure oil, can be adjusted by a device (not shown).
  • the speed at which the pressure medium flows through the pressure chamber 1 can also be adjusted. It is 2 to 50 m / sec for gaseous pressure media, preferably 10 to 40 m / sec and 4 to 5 m / sec for liquid pressure media.
  • the transition from laminar flow to turbulent flow is determined by Reynold's index, which is> 2,300 for the turbulent flow.
  • the direction of the flow of the pressure medium generally corresponds to the direction of conveyance of the material to be pressed in the belt press. However, the direction of flow of the pressure medium can also be opposite to the direction of conveyance of the material to be pressed.
  • the pressure chamber 1 On the end faces of the pressure chamber 1 are arranged transverse to the conveying direction of the belt press, provided with a row of openings, through which the pressure medium is introduced into the pressure chamber on one end face and the pressure medium is sucked off on the other end face.
  • the pressure medium flows through the spaces in the pressure chamber which are delimited by the press belt 2, the press rollers 9 and by the bearing rollers 10.
  • the spaces through which the pressure medium flows are delimited by the press belt 2, a cage 16 and the press rollers 9 and possibly by the side walls 5 of the pressure plate.
  • the bearing rollers 10 can be made of thermal insulation material.
  • the pressure plate 6 and the side walls 5 integral with the pressure plate from a thermal insulation material or to provide them with a thermal insulation layer on the inside of the chamber.
  • the press rollers 9 are arranged in a cage 16, the supply and discharge of the fluid pressure medium being carried out by connecting pieces 17 or bores of pipes arranged at the end face in the pressure chamber, which pass between the press belt 2 and the cage 16 are provided.
  • the cage 16 can be made of a thermal insulation material or can be provided with a thermal insulation layer.
  • the cooled or heated pressure medium flows through a part of the interior of the pressure chamber that is small in its dimensions.
  • overflow connections must be present between the individual partial chambers, which are delimited by the cage 16, the press belt 2 and the press rollers 9.
  • Pressure of the fluid pressure medium offers the possibility to control the heat supply to the workpiece depending on the product.

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

Doppelbandpresse zum Herstellen und/oder zum Beschichten von bahn- oder plattenförmigen Werkstücken aller ArtDouble belt press for the manufacture and / or for the coating of sheet or plate-shaped workpieces of all kinds
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, konti¬ nuierlich 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 zugewand¬ ten Seite geöffnet ist, umlaufende, sich am Bandtrum abstützende Dichtungen auf¬ weist, 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 producing and / or coating sheet or plate-shaped workpieces of all kinds, in which the material to be pressed between the facing belt strands of two endless, continuously rotating press belts is a reaction zone in which there is pressure and heat is acted upon, passes through and in the reaction zone each strip strand is assigned at least one pressure chamber which is open on the side facing the strip strand, has circumferential seals which are supported on the strip strand, is delimited by a pressure plate on the side facing away from the strip strand and is provided with pressing rollers which are supported on the belt strand.
Der Erfindung liegt die Aufgabe zugrunde, in der Reaktionszone der Doppelband¬ presse die Druckbelastung des bahn- oder plattenförmigen, die Presse durchlaufen¬ den Werkstücks und die Intensität der Wärmeübertragung oder des Wärmeabzuges produktabhängig in einem relativ großen Bereich einstellbar auszubilden.The invention is based on the object of designing the pressure load on the sheet-like or plate-shaped workpiece passing through the press and the intensity of the heat transfer or heat removal in a relatively large range in an adjustable manner in the reaction zone of the double belt press.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß zwischen den Preßrollen und der Druckplatte den Preßrollen zugeordnete Lagerwalzen angeordnet sind, ein fiuides 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 Arbeits¬ druck 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 the bearing rolls associated with the press rolls are arranged, a fluid pressure medium in a short circuit flows through the pressure chamber and a heating device outside the pressure chamber or a cooling device turbulently and to change the intensity of the heat transfer of the work ¬ pressure of the fluid pressure medium in the pressure chamber or the speed of the pressure medium is adjustable.
Der auf das Werkstück wirkende Druck wird einerseits im Bereich der Reaktionszone der Doppelbandpresse durch die in der oder den Druckkammern angeordneten Pre߬ rollen und andererseits durch den Arbeitsdruck des fluiden Druckmediums bestimmt.The pressure acting on the workpiece is determined on the one hand in the area of the reaction zone of the double belt press by the press rolls arranged in the pressure chamber or chambers and on the other hand 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 aufgeheiztenSince the fluid pressure medium flows through the pressure chamber in a turbulent manner, the heat transfer from the heated one to a laminar flow is thereby achieved
Druckmedium oder der Kälteübergang von dem gekühlten Druckmedium auf das Ar¬ beitstrum 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 Druckme- diums erheblich gesteigert werden. Somit sind durch die erfindungsgemäße Ausrü¬ stung der Druckkammer die technischen Möglichkeiten gegeben, um in der Reakti¬ onszone die Druck- und Wärmebelastung dem jeweiligen Werkstück exakt anzupas¬ sen und zwar entsprechend den beim Preßvorgang auftretenden technologischen Problemen. 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 Druck¬ mediums einstellbar sind.Pressure medium or the cold transition from the cooled pressure medium to the working line of the press belt and thus to the workpiece is significantly improved. The intensity of the heat supply to the workpiece or heat dissipation from the workpiece can be increased considerably by increasing the working pressure or the speed of the pressure medium. Thus, the equipment of the pressure chamber according to the invention provides the technical possibilities for precisely adapting the pressure and heat load to the respective workpiece in the reaction zone, in accordance with the technological problems that occur during the pressing process. A further gradation in the pressure and heat supply or cooling can be achieved in that the pressure chamber is composed of several cassettes and each cassette has rotatably mounted bearing rollers and pressure rollers in a frame, a heated, fluid pressure medium flows through it turbulently and in each Cassette the working pressure and the speed of the fluid pressure 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:Embodiments of the invention are shown in the drawings. Show it:
Figur 1 in schematischer Darstellung eine dem Arbeitstrum eines endlosen Preßban- des zugeordnte Druckkammer,FIG. 1 shows a schematic representation of a pressure chamber assigned to the working strand of an endless press belt,
Figur 2 eine Abwandlungsform zu der Ausführung nach der Fig. 1 undFigure 2 shows a modification to the embodiment of FIGS. 1 and
Figur 3 ein Diagramm, bei dem der Druck des fluiden Druckmediums in der Druck¬ kammer auf der Abszisse und die Werte des Wärmeübergangskoef¬ fizienten ~ auf der Ordinate abgetragen sind.FIG. 3 shows a diagram in which the pressure of the fluid pressure medium in the pressure chamber is plotted 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 Druckme- dium eingeführt wird, durch das die Dichtung 3 kraftschlüssig an das Preßband 2 ge¬ drückt wird.In FIG. 1, the pressure chamber 1 is delimited on the lower side by the working strand of an endless press belt 2, on which a seal 3 is supported, which is slidably mounted in a circumferential groove 4 in the side walls 5 of a pressure plate 6. In the exemplary embodiment shown, the seal 3 is supported in the groove 4 on an O-ring 7, which on one side delimits a groove chamber 8 into which a pressure medium is introduced, through which the seal 3 presses non-positively on the press belt 2 becomes.
Dem Arbeitstrum des Preßbandes 2 sind Preßrollen 9 zugeordnet, die sich an La¬ gerwalzen 10 abstützen.Press rolls 9, which are supported on bearing rollers 10, are assigned to the working strand of the press belt 2.
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 Pre߬ band 2 zur Höhenverstellung verstellbar.The storage of the bearing rollers is shown only schematically in FIG. 1. Both the bearing rollers 10 and the press rollers 9 can be rotatably mounted in a frame attached to the pressure plate 6. This frame can be adjusted together with the pressure plate using piston-cylinder units in the position of the press belt 2 for height adjustment.
In der Druckkammer wird während des Betriebes der Presse ein Druckmedium tur- bulent in einem kurzen Kreislauf bewegt und wird mittels einer Umwälzeinrichtung 11 , die als Ventilator, Kompressor oder Pumpe ausgebildet sein kann, durch eine Saug- leitung 12 aus der Druckkammer abgezogen, durch eine Heiz- oder Kühlvorrichtung 13 geführt und durch eine Druckleitung 14 wieder in den Innenraum 15 der Druck¬ kammer eingeleitet. Durch eine nicht dargestellte Einrichtung ist der Druck des Druckmediums, das Druckluft oder Drucköl sein kann, einstellbar.During the operation of the press, a pressure medium is moved turbulently in a short circuit in the pressure chamber and is by means of a circulating device 11, which can be designed as a fan, compressor or pump, by a suction Line 12 withdrawn from the pressure chamber, passed through a heating or cooling device 13 and introduced through a pressure line 14 back into the interior 15 of the pressure chamber. The pressure of the pressure medium, which can be compressed air or pressure oil, can be adjusted by a device (not shown).
Auch die Geschwindigkeit, mit der das Druckmedium die Druckkammer 1 durch¬ strömt, ist einstellbar. Sie beträgt bei gasförmigen Druckmedien 2 bis 50 m/sec, vor¬ zugsweise 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 can also be adjusted. It is 2 to 50 m / sec for gaseous pressure media, preferably 10 to 40 m / sec and 4 to 5 m / sec for liquid pressure 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 be- trägt.The transition from laminar flow to turbulent flow is determined by Reynold's index, which is> 2,300 for the turbulent flow.
Die Richtung der Strömung des Druckmediums entspricht im allgemeinen der Förder¬ richtung des Preßgutes in der Bandpresse. Die Strömungsrichtung des Druckme¬ diums kann jedoch auch der Förderrichtung des Preßgutes entgegengerichtet sein.The direction of the flow of the pressure medium generally corresponds to the direction of conveyance of the material to be pressed in the belt press. However, the direction of flow of the pressure medium can also be opposite to the direction of conveyance of the material to be pressed.
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 wer- den. Bei der Ausführung nach der Fig. 2 werden die vom Druckmedium durchström¬ ten Zwischenräume durch das Preßband 2, einen Käfig 16 und die Preßrolen 9 und ggf. durch die Seitenwände 5 der Druckplatte begrenzt.On the end faces of the pressure chamber 1 are arranged transverse to the conveying direction of the belt press, provided with a row of openings, through which the pressure medium is introduced into the pressure chamber on one end face and the pressure medium is sucked off on the other end face. In the embodiment according to FIG. 1, the pressure medium flows through the spaces in the pressure chamber which are delimited by the press belt 2, the press rollers 9 and by the bearing rollers 10. In the embodiment according to FIG. 2, the spaces through which the pressure medium flows are delimited by the press belt 2, a cage 16 and the press rollers 9 and possibly by the side walls 5 of the pressure plate.
Um zu verhindern, 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 flowing out of the interior 15 of the pressure chamber to the 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 ein¬ stückigen Seitenwände 5 aus einem Wärmedämmmaterial herzustellen oder an der Kammerinnenseite mit einer Warmedämmschicht zu versehen.It is also possible to produce the pressure plate 6 and the side walls 5 integral with the pressure plate from a thermal insulation material or to provide them with a thermal insulation layer on the inside of the chamber.
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 stirnseitig in der Druckkammer angeordneten Rohrleitungen erfolgt, die zwischen dem Preßband 2 und dem Käfig 16 vorgesehen sind. Der Käfig 16 kann aus einem Wärmedämmaterial gefertigt oder mit einer Warme¬ dämmschicht versehen sein.In the exemplary embodiment according to FIG. 2, the press rollers 9 are arranged in a cage 16, the supply and discharge of the fluid pressure medium being carried out by connecting pieces 17 or bores of pipes arranged at the end face in the pressure chamber, which pass between the press belt 2 and the cage 16 are provided. The cage 16 can be made of a thermal insulation material or can be provided with a thermal insulation layer.
Das gekühlte oder aufgeheizte Druckmedium durchströmt bei dem Ausführungsbei¬ spiel nach der Fig. 2 einen in seinen Abmessungen kleinen Teil des Innenraums der Druckkammer. Im Bereich der Preßrollen 9 müssen zwischen den einzelnen Teil¬ kammern, die von dem Käfig 16, dem Preßband 2 und den Preßrolien 9 begrenzt werden, Überströmverbindungen vorhanden sein.In the embodiment according to FIG. 2, the cooled or heated pressure medium flows through a part of the interior of the pressure chamber that is small in its dimensions. In the area of the press rollers 9, overflow connections must be present between the individual partial chambers, which are delimited by the cage 16, the press belt 2 and the press rollers 9.
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 des3 shows that with increasing pressure of the pressure medium in the interior of the pressure chamber, the heat transfer coefficient from the heated pressure medium to the workpiece rises considerably, so that the adjustability of the
Druckes des fluiden Druckmediums die Möglichkeit bietet, die Wärmezufuhr zum Werkstück produktabhängig zu steuern.Pressure of the fluid pressure medium offers the possibility to control the heat supply to the workpiece depending on the product.
Der auf der Ordinate des Diagramms abgetragene Wärmeübergangskoeffizient α durch w = transportierte Wärmemenge pro Zeiteinheit m = wärmetauschende FlächeThe 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 = Temperaturdifferenz zwischen der Wärmetauschenden Oberfläche und dem fluiden Druckmedium = treibende Temperaturdifferenz.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 Hochdruck- laminaten die Abmessungen der Druckkammer verringert werden können, da bei hö¬ herem Arbeitsdruck der Wärmeübergangskoeffizient α sehr hoch ist. It can be seen from the diagram that the dimensions of the pressure chamber can be reduced in the production of high-pressure laminates, since the heat transfer coefficient α is very high at higher working pressures.
BezugszeicheniisteReference number list
1 Druckkammer1 pressure chamber
2 Preßband2 press belt
3 Dichtung3 seal
4 Nut4 groove
5 Seitenwand5 side wall
6 Druckplatte6 pressure plate
7 O-Ring7 O-ring
8 Nutkammer8 groove chamber
9 Preßrolle9 press roll
10 Lagerwalze10 bearing roller
11 Umwälzeinrichtung11 Circulation device
12 Saugleitung12 suction line
13 Kühlvorrichtung13 cooling device
14 Druckleitung14 pressure line
15 Innenraum15 interior
16 Käfig16 cage
17 Stutzen 17 sockets

Claims

Patentansprüche claims
1. Doppelbandpresse zum Herstellen und/oder zum Beschichten von bahn- oder plattenförmigen Werkstücken aller Art, bei der das Preßgut zwischen den ein- ander zugekehrten Bandtrumen zweier endloser, kontiuieriich umlaufender1. Double belt press for the manufacture and / or for the coating of sheet or plate-shaped workpieces of all kinds, in which the material to be pressed between the belt strands facing each other has two endless, continuously rotating ones
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, dadurch gekennzeichnet, daß zwischen den Preßrollen (9) und der Druckplatte (6) den Preßrollen (9) zugeordnete Lagerwalzen (10) angeordnet sind, ein fluides Druckmedium in kurzem Kreislauf die Druckkammer und eine außerhalb der Druckkammer liegende Aufheizeinrichtung oder Kühlvorrichtung (13) turbulent durchströmt.Press belts pass through a reaction zone, in which pressure and heat are applied, and in the reaction zone each strip strand is assigned at least one pressure chamber, which is open on the side facing the strip strand and has circumferential seals that support the strip strand, on which Side facing away from the belt run is delimited by a pressure plate and is provided with press rolls which are supported on the belt run, characterized in that bearing rolls (10) associated with the press rolls (9) and the press plates (6) are arranged between the press rolls (9) and a fluid pressure medium in short circuit flows turbulently through the pressure chamber and a heating device or cooling device (13) located outside the pressure chamber.
2. Doppelbandpresse nach Anspruch 1 , dadurch gekennzeichnet, daß zur Ver¬ änderung der Intensität der Wärmeübertragung der Arbeitsdruck des fluiden Druckmediums oder die Geschwindigkeit des Druckmediums in der Druckkammer einstellbar ist.2. Double belt press according to claim 1, characterized in that the working pressure of the fluid pressure medium or the speed of the pressure medium in the pressure chamber can be adjusted to change the intensity of the heat transfer.
3. Doppelbandpresse nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Lagerwalzen (10) aus Wärmedämmaterial gefertigt sind.3. Double belt press according to claim 1 or 2, characterized in that the bearing rollers (10) are made of thermal insulation material.
4. Doppelandpresse nach Anspruch 1 , dadurch gekennzeichnet, daß die Pre߬ rollen (9) in einem Käfig (16) angeordnet sind und die Zu- und Abführung des fluiden Druckmediums zwischen dem Preßband (2) und dem Käfig (16) erfol¬ gen.4. Double pressure press according to claim 1, characterized in that the Pre߬ rollers (9) are arranged in a cage (16) and the supply and discharge of the fluid pressure medium between the press belt (2) and the cage (16) takes place .
5. Doppelandpresse nach Anspruch 4, dadurch gekennzeichnet, daß der Käfig (16) aus einem Wärmedämmaterial gefertigt oder mit einer Warmedämm¬ schicht versehen ist. 5. Double jack according to claim 4, characterized in that the cage (16) is made of a thermal insulation material or is provided with a thermal insulation layer.
6. Doppelandpresse nach einem der vorhergehenden Ansprüche, dadurch ge¬ kennzeichnet, daß die Druckplatte (6) und die mit der Druckplatte einstückigen Seitenwände (5) aus einem Wärmedämmaterial hergestellt oder an der Kam¬ merinnenseite mit einer Warmedämmschicht versehen sind.6. Double jack according to one of the preceding claims, characterized ge indicates that the pressure plate (6) and the one-piece with the pressure plate side walls (5) made of a thermal insulation material or are provided on the inside of the chamber with a thermal insulation layer.
7. Doppelandpresse nach einem der Ansprüche 1 bis 4, dadurch gekennzeich¬ net, daß die Preßrollen (9) und die Lagerwalzen (10) in einem an der Druck¬ platte befestigten Gestell drehbar gelagert sind.7. Double pressure press according to one of claims 1 to 4, characterized gekennzeich¬ net that the press rollers (9) and the bearing rollers (10) are rotatably mounted in a frame attached to the Druck¬ plate.
8. Doppelbandpresse nach einem der vorhergehenden Ansprüche, dadurch ge¬ kennzeichnet, daß die Druckkammer sich aus mehreren Kassetten zusam- mensetzt und jede Kassette in einem Gestell drehbar gelagerte Lagerwalzen und Stützrollen aufweist, von einem aufgeheizten oder gekühlten fluiden Druckmedium turbulent durchströmt wird und in jeder Kassette der Ar¬ beitsdruck des fluiden Druckmediums einstellbar ist.8. Double belt press according to one of the preceding claims, characterized ge indicates that the pressure chamber is composed of a plurality of cassettes and each cassette has rotatably mounted bearing rollers and support rollers in a frame, a heated or cooled fluid pressure medium flows through it turbulently and in each Cassette the working pressure of the fluid pressure medium is adjustable.
9. Doppelbandpresse nach einem der Ansprüche 1 bis 8, dadurch gekennzeich- net, daß das Druckmedium Teilräume der Druckkammer in Förderrichtung oder entgegen der Förderrichtung der Bandpresse turbulent durchströmt und diese Teiiräume durch das Preßband (2), die Preßrollen (9), die Lagerwalzen (10) und die Seitenwände (5) der Druckplatte oder durch das Preßband (2), den Käfig (16), die Preßrollen (9) und die Seitenwände (5) begrenzt sind. 9. Double belt press according to one of claims 1 to 8, characterized in that the pressure medium flows through turbulent parts of the pressure chamber in the conveying direction or counter to the conveying direction of the belt press and these parts by the press belt (2), the press rollers (9), the bearing rollers (10) and the side walls (5) of the pressure plate or by the press belt (2), the cage (16), the press rollers (9) and the side walls (5) are limited.
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 true EP0842040A1 (en) 1998-05-20
EP0842040B1 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)

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Also Published As

Publication number Publication date
DE59705468D1 (en) 2002-01-03
WO1997039882A1 (en) 1997-10-30
EP0842040B1 (en) 2001-11-21
DE19615771A1 (en) 1997-10-23
ES2163759T3 (en) 2002-02-01
ATE209102T1 (en) 2001-12-15
JPH11508188A (en) 1999-07-21
US6009803A (en) 2000-01-04

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