EP1676696B1 - Continuously operating press for making plates and process for operating such press - Google Patents

Continuously operating press for making plates and process for operating such press Download PDF

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Publication number
EP1676696B1
EP1676696B1 EP20050028479 EP05028479A EP1676696B1 EP 1676696 B1 EP1676696 B1 EP 1676696B1 EP 20050028479 EP20050028479 EP 20050028479 EP 05028479 A EP05028479 A EP 05028479A EP 1676696 B1 EP1676696 B1 EP 1676696B1
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EP
European Patent Office
Prior art keywords
plates
unrolling
continuously operating
pressure relief
actuators
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.)
Not-in-force
Application number
EP20050028479
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German (de)
French (fr)
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EP1676696A2 (en
EP1676696A3 (en
Inventor
Detlef Kroll
Fasan Roberto
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.)
Dieffenbacher GmbH Maschinen und Anlagenbau
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Dieffenbacher GmbH Maschinen und Anlagenbau
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Publication of EP1676696A2 publication Critical patent/EP1676696A2/en
Publication of EP1676696A3 publication Critical patent/EP1676696A3/en
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Publication of EP1676696B1 publication Critical patent/EP1676696B1/en
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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
    • 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
    • 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 continuous press for the production of chip, fiber, plastic and wood panels according to the preamble of claim 1 and a method for operating such a press.
  • EP 1 435 288 A1 is a continuously operating press according to the preamble of claim 1 become known with the in short areas of the initial pressing line a loading or unloading shock is performed on the pressed material. This is preferably carried out at the beginning of the press line during or shortly after compression to final gauge. In this area of the pressing section, the material to be compacted still has high restoring forces and, when the material to be pressed is relieved from the normal pressure, it is possible to partially control very low pressures. In addition, partially very high pressures can be driven, in which the rolling plate is decoupled in the critical high pressure and deformation areas of the heating plate by additional pressure elements and elastically deformed.
  • the invention has for its object, depending on the pressed material to create a continuously operating press and a method for operating such a press, with the within the Pressentfite a short active pressure relief in the product is to be realized.
  • the material plate at one or more points in the rear pressing area after the plate has reached a corresponding vapor pressure, only very briefly depressurized.
  • the restoring forces of the product do not have a negative effect on the plate quality, so that it with a sufficiently large, active relief of the heating and Abrollplatten to a additional evaporation of the material plate can come.
  • the vapor pressure drops abruptly and there is an additional cooling of the plate temperature, which in turn significantly reduces the risk of bursting after the plate exits the press, and ensures a more even distribution of moisture in the plate.
  • the production efficiency and the moisture content of the plate to be produced can be increased and stabilized. These requirements are met with the aid of the known heating and rolling plate sandwich system.
  • the achievement of a short, adjustable pressure relief in the press nip for the continuous mat is achieved in that the pressure relief zone is very short, preferably between 50 and 500 mm press length, and these relief zones starting at one or more locations, from the center of the press to the outlet area of The pressure or the level of the pressure relief is technologically dependent on the operator adjustable and the residual pressure on the plate in this area can be actively reduced to 0, that is, the rolling plate can be actively lifted from the product.
  • the drawing shows a continuous press in side view and section with the lower and upper heating plate 3 and 4 with a continuous mat 10, which is pulled with the steel strips 12 and 13 in the working direction 15 by the continuously operating press.
  • the roll bars 8 and 9 take over the rolling support of the steel strips 12 and 13.
  • a recess 14 in the actuators 5 the upper roll plate 1 can lift or press against the mat 10, so that the rolling plates 1 and 2 are decoupled from a full-surface contact support. Thus, they can be pulled away from the mat 10 or pressed against it regardless of the deformability of the heating plate 3 and 4.
  • the double-acting actuators 5 are made of cylinders 6 and piston 7.
  • the piston 7 is located in a bore of the continuous heating plate 3 or 4.
  • the pressure relief zone a the possibility of a steam outlet 11 from the mat 10 is given.
  • the transition from a scattered particle mat to a solid material plate is fluid in a continuously operating press and, of course, this could also be referred to as a material plate 10.
  • it can also be a simultaneous (seen in the direction of 15) relief of the rolling plate 2 below provided, or a varying controlled discharge, z. B. alternately up / down in working direction 15. This is the discretion of the user. Conceivable here is the arrangement of several relief zones from half the pressing length of the continuously operating press, which can be controlled differently.
  • a relief zone may be disposed on a rolling plate bump, see FIG. 2 , or a somewhat moderate relief zone after FIG. 3 . It is a feature contributing wholly to the rigidity and accuracy of the continuous press that the heating plates 3 or 4 are designed across the entire width of the mat 10 transversely to the working direction 15 as a stable and uninterrupted part.
  • the pressure relief zone a preferably has a length of 50 to 500 mm in the working direction 15 and the residual pressure can be adjusted to 0 by lifting the rolling plate 1 or 2.

Description

Die Erfindung betrifft eine kontinuierlich arbeitende Presse zur Herstellung von Span-, Faser-, Kunststoff- und Holzplatten gemäß dem Oberbegriff des Patentanspruches 1 und ein Verfahren zum Betreiben einer solchen Presse.The invention relates to a continuous press for the production of chip, fiber, plastic and wood panels according to the preamble of claim 1 and a method for operating such a press.

Zur Erzeugung von Holzstoffwerkplatten muss bei kontinuierlich arbeitenden Pressen das entstehende Produkt in Durchlaufrichtung, abhängig von den technologischen Parametern, eine variierende Druckbeaufschlagung erfahren. Dies wird bei den bekannten Veröffentlichungen DE 44 46 091 A1 , DE 195 18 879 A1 und DE 196 22 197 A1 durch Einsteuerung einer Weg- und Druckkurve in Pressenlängsrichtung erreicht. Eine Variation des Druckes bewirkt eine Veränderung der Wegkurve, und damit eine Verformung der Presse, bzw. der Heizplatten der Presse.For the production of wood pulp boards, the resulting product must undergo varying pressurization in the continuous direction, depending on the technological parameters, in continuously operating presses. This is in the known publications DE 44 46 091 A1 . DE 195 18 879 A1 and DE 196 22 197 A1 achieved by controlling a travel and pressure curve in the press longitudinal direction. A variation of the pressure causes a change in the path curve, and thus a deformation of the press, or the heating plates of the press.

Dabei können die Wege nur innerhalb der zulässigen Heizplattenverformung vorn Gestell zu Gestell geändert werden. Dadurch ergeben sich bei den bekannten Heizplattendicken von ca. 60 bis 120 mm bei notwendigen Verformungen von wenigen Millimetern bereits sehr lange Verformungsstrecken. Beim Verpressen von Holzwerkstoffplatten entsteht in der Matte beim Aufheizen ein Dampfpolster. Damit der Dampfdruck in der Matte nicht zu hoch und die fertige Platte nach der Verlassen der Presse durch Platzer nicht zerstört wird, kann bei den bekannten Pressen in den Grenzen der maximalen Verformung der Heizplatte eine Druckreduzierung im hinteren Pressbereich eingestellt werden.The paths can only be changed within the permissible Heizplattenverformung from frame to frame. This results in the known Heizplattendicken of about 60 to 120 mm for necessary deformations of a few millimeters already very long Deformation distances. When pressing wood-based panels, a steam cushion is created in the mat during heating. So that the steam pressure in the mat is not too high and the finished plate is not destroyed after leaving the press by Platzer, in the known presses within the limits of the maximum deformation of the heating plate, a pressure reduction in the rear pressing area can be set.

Nach DE 195 18 879 A1 besteht eine solche Vorrichtung darin, dass nach der Vorverdichtung des Pressgutes im Einlaufspalt in der folgenden Hauptpressstrecke mittels flexibler Pressengestelle bzw. und/oder Pressensegmenten eine druckarme Zone dekomprimierend und komprimierend mit einem steilen Steigungs- bzw. Fallwinkel für einen Vertikalhub von 0 bis circa 10 mm ansteigend extrem kurz bei maximaler Produktionsgeschwindigkeit während der Produktion einsteuerbar ist. Dabei hat sich als Nachteil erwiesen, dass die Wegstrecke zum Erreichen der notwendigen Heizplattenverformungen aufgrund der notwendigen Heizplattendicke sehr lang (mehr als 1 bis 2 Meter) wird, und auf Grund der inneren Rückstellkräfte des Produktes bei diesen langen Wegstrecken sehr viel Presslänge verloren geht, das Produkt sich nicht in der Dicke an die Verformung anpasst und somit keine genügend große Druckentlastung im Produkt erfolgt und sich eine zu lange Entlastungszone negativ auf die technologischen Werte auswirkt.To DE 195 18 879 A1 such a device is that after the pre-compression of the material to be pressed in the inlet gap in the following main press section by means of flexible press racks and / or press segments a low pressure zone decompressing and compressing with a steep slope or fall angle for a vertical stroke of 0 to about 10 mm increasing extremely short at maximum production speed during production einsteuerbar is. It has proven to be a disadvantage that the distance to reach the necessary Heizplattenverformungen due to the necessary Heizplattendicke very long (more than 1 to 2 meters), and due to the internal restoring forces of the product at these long distances very much press length is lost, the Product does not adapt in thickness to the deformation and thus does not take place sufficiently large pressure relief in the product and a too long relief zone has a negative effect on the technological values.

Mit EP 1 435 288 A1 ist eine kontinuierlich arbeitende Presse gemäß dem Oberbegriff des Anspruchs 1 bekannt geworden mit der in kurzen Bereichen der anfänglichen Pressstrecke ein Be- oder Entlastungsstoß an dem Pressgut durchgeführt wird. Dieses wird vorzugsweise zu Beginn der Pressstrecke während oder kurz nach der Verdichtung auf Endmaß durchgeführt. In diesem Bereich der Pressstrecke weist das Pressgut noch hohe Rückstellungskräfte auf und bei einer Entlastung des Pressgutes gegenüber dem Normaldruck können so partiell sehr niedrige Drücke eingesteuert werden. Zusätzlich können auch partiell sehr hohe Drücke gefahren werden, in dem die Abrollplatte in den kritischen Hochdruck- und Verformungsbereichen von der Heizplatte durch zusätzliche Druckelemente entkoppelt und elastisch verformt wird.With EP 1 435 288 A1 is a continuously operating press according to the preamble of claim 1 become known with the in short areas of the initial pressing line a loading or unloading shock is performed on the pressed material. This is preferably carried out at the beginning of the press line during or shortly after compression to final gauge. In this area of the pressing section, the material to be compacted still has high restoring forces and, when the material to be pressed is relieved from the normal pressure, it is possible to partially control very low pressures. In addition, partially very high pressures can be driven, in which the rolling plate is decoupled in the critical high pressure and deformation areas of the heating plate by additional pressure elements and elastically deformed.

Der Erfindung liegt die Aufgabe zugrunde, je nach Pressgut eine kontinuierlich arbeitende Presse und ein Verfahren zum Betreiben einer solchen Presse zu schaffen, mit der innerhalb der Pressentänge eine kurze aktive Druckentlastung im Produkt zu verwirklichen ist.The invention has for its object, depending on the pressed material to create a continuously operating press and a method for operating such a press, with the within the Pressentänge a short active pressure relief in the product is to be realized.

Die Lösung dieser Aufgabe besteht in dem kennzeichnenden Teil des Vorrichtungsanspruchs 1, bzw. des Verfahrensanspruchs 9.The solution to this problem consists in the characterizing part of the device claim 1, and the method claim. 9

Mit dieser Lösung wird die extrem hohe Verformbarkeit der Abrollplatten ausgenutzt, indem diese in einem bestimmten Bereich von der vollständigen Unterstützung der Heizplatten entkoppelt werden und unabhängig von der Verformbarkeit der Heizplatten (oder Pressplatten) über separate Stellglieder einsteuerbar vom Produkt (entlastend) weggezogen oder gegen das Produkt (belastend) gedrückt werden.With this solution, the extremely high deformability of the rolling plates are exploited by these are decoupled in a certain range of the full support of the heating plates and regardless of the deformability of the heating plates (or pressing plates) via separate actuators einsteuerbar pulled away from the product (relieving) or against the Product (loading) to be pressed.

Es hat sich auch als vorteilhaft erwiesen, wenn die Werkstoffplatte an einer oder mehreren Stellen im hinteren Pressbereich, nachdem die Platte einen entsprechenden Dampfdruck erreicht hat, nur sehr kurz druckentlastet wird. Bei einer entsprechend kurzen Druckentlastung wirken sich die Rückstellkräfte des Produktes noch nicht negativ auf die Plattenqualität aus, so dass es bei einer genügend großen, aktiven Entlastung der Heiz- und Abrollplatten zu einer zusätzlichen Entdampfung der Werkstoffplatte kommen kann. Bei einer genügend großen Entlastung der Platte sinkt der Dampfdruck darin schlagartig ab und es kommt zu einer zusätzlichen Abkühlung der Plattentemperatur, was wiederum die Gefahr von Platzern nach dem Austreten der Platte aus der Presse deutlich verringert, sowie eine gleichmäßigere Feuchtigkeitsverteilung in der Platte gewährleistet.It has also proved to be advantageous if the material plate at one or more points in the rear pressing area after the plate has reached a corresponding vapor pressure, only very briefly depressurized. With a correspondingly short pressure relief, the restoring forces of the product do not have a negative effect on the plate quality, so that it with a sufficiently large, active relief of the heating and Abrollplatten to a additional evaporation of the material plate can come. With a sufficiently large discharge of the plate, the vapor pressure drops abruptly and there is an additional cooling of the plate temperature, which in turn significantly reduces the risk of bursting after the plate exits the press, and ensures a more even distribution of moisture in the plate.

Mit der kontinuierlich arbeitende Presse gemäß der Erfindung kann die Produktionsleistung sowie der Feuchtigkeitsgehalt der herzustellenden Platte erhöht und stabilisiert werden. Diese Anforderungen werden mit Hilfe des vorbekannten Heiz- und Abrollplatten Sandwich-Systems erfüllt.With the continuous press according to the invention, the production efficiency and the moisture content of the plate to be produced can be increased and stabilized. These requirements are met with the aid of the known heating and rolling plate sandwich system.

Das Erreichen einer kurzen, einstellbaren Druckentlastung im Pressspalt für die durchlaufende Matte wird dadurch erreicht, dass die Druckentlastungszone sehr kurz ist, vorzugsweise zwischen 50 und 500 mm Presslänge liegt, und sich diese Entlastungszonen an einer oder mehreren Stellen beginnend, ab Pressenmitte bis zum Auslaufbereich der Presse befinden können, der Druck bzw. die Höhe der Druckentlastung ist technologisch abhängig vom Bediener einstellbar und der Restdruck auf die Platte in diesem Bereich kann aktiv bis auf 0 reduziert werden, das heißt, die Abrollplatte kann aktiv von dem Produkt abgehoben werden.The achievement of a short, adjustable pressure relief in the press nip for the continuous mat is achieved in that the pressure relief zone is very short, preferably between 50 and 500 mm press length, and these relief zones starting at one or more locations, from the center of the press to the outlet area of The pressure or the level of the pressure relief is technologically dependent on the operator adjustable and the residual pressure on the plate in this area can be actively reduced to 0, that is, the rolling plate can be actively lifted from the product.

Weitere vorteilhafte Maßnahmen und Ausgestaltungen des Gegenstandes der Erfindung gehen aus den Unteransprüchen und der folgenden Beschreibung der Zeichnung hervor.Further advantageous measures and embodiments of the subject matter of the invention will become apparent from the dependent claims and the following description of the drawing.

Es zeigen:

Figur 1
Seitlicher Ausschnitt aus einer kontinuierlich arbeitenden Presse zwischen Stahlband und Heizplatte,
Figur 2
die Anordnung nach Figur 1 mit oben angehobener Abrollplatte in einer Ausnehmung am Ende der oberen Heizplatte und
Figur 3
eine zweite Ausbildung der Anordnung nach Figur 2.
Show it:
FIG. 1
Side cutout of a continuous press between steel strip and heating plate,
FIG. 2
the arrangement after FIG. 1 with raised Abrollplatte in a recess at the end of the upper heating plate and
FIG. 3
a second embodiment of the arrangement according to FIG. 2 ,

Die Zeichnung zeigt eine kontinuierlich arbeitende Presse in Seitenansicht und Schnitt mit der unteren und oberen Heizplatte 3 und 4 mit einer durchlaufenden Matte 10, die mit den Stahlbändern 12 und 13 in Arbeitsrichtung 15 durch die kontinuierlich arbeitende Presse gezogen wird. Die Rollstangen 8 und 9 übernehmen dabei die rollende Abstützung der Stahlbänder 12 und 13. Für die Druckentlastungszone a ist in der oberen Heizplatte 3 eine Ausnehmung 14 vorgesehen, in der Stellglieder 5 die obere Abrollplatte 1 anheben oder gegen die Matte 10 drücken können, so dass die Abrollplatten 1 und 2 von einer vollflächigen Anlage Abstützung entkoppelbar sind. Damit können sie unabhängig von der Verformbarkeit der Heizplatte 3 und 4 von der Matte 10 weggezogen oder dagegen gedrückt werden. Die doppelt wirkenden Stellglieder 5 bestehen dafür aus Zylindern 6 und Kolben 7. Vorzugsweise findet sich der Kolben 7 in einer Bohrung der durchgehenden Heizplatte 3 oder 4. Mit der Druckentlastungszone a ist die Möglichkeit eines Dampfaustrittes 11 aus der Matte 10 gegeben. Es ist dem Fachmann plausibel, dass in einer kontinuierlich arbeitenden Presse der Übergang von einer gestreuten Partikelmatte zu einer festen Werkstoffplatte fließend ist und hierbei natürlich auch von einer Werkstoffplatte 10 gesprochen werden könnte. Es kann zusätzlich auch eine gleichzeitige (in Arbeitsrichtung 15 gesehen) Entlastung der Abrollplatte 2 unten vorgesehen sein, oder eine variierend gesteuerte Entlastung, z. B. alternierend oben/unten in Arbeitsrichtung 15. Dies liegt im Ermessenspielraum des Anwenders. Denkbar ist hier die Anordnung von mehreren Entlastungszonen ab der Hälfte der Presslänge der kontinuierlich arbeitenden Presse, die unterschiedlich angesteuert werden können. Natürlich kann zum Erreichen einer maximalen Verformung der Abrollplatten 1 oder 2 eine Entlastungszone an einem Abrollplattenstoß angeordnet sein, siehe Figur 2, oder eine etwas gemäßigte Entlastungszone nach Figur 3. Durchaus zur Steifigkeit und Genauigkeit der kontinuierlich arbeitenden Presse beitragendes Merkmal ist, dass die Heizplatten 3 oder 4 über die gesamte Breite der Matte 10 quer zur Arbeitsrichtung 15 als ein stabiles und nicht unterbrochenes Teil ausgestaltet sind. Die Druckentlastungszone a weisen vorzugsweise eine Länge von 50 bis 500 mm in Arbeitsrichtung 15 auf und der Restdruck kann bis auf 0 durch Abheben der Abrollplatte 1 oder 2 eingestellt werden.The drawing shows a continuous press in side view and section with the lower and upper heating plate 3 and 4 with a continuous mat 10, which is pulled with the steel strips 12 and 13 in the working direction 15 by the continuously operating press. The roll bars 8 and 9 take over the rolling support of the steel strips 12 and 13. For the pressure relief zone a is provided in the upper heating plate 3, a recess 14 in the actuators 5, the upper roll plate 1 can lift or press against the mat 10, so that the rolling plates 1 and 2 are decoupled from a full-surface contact support. Thus, they can be pulled away from the mat 10 or pressed against it regardless of the deformability of the heating plate 3 and 4. The double-acting actuators 5 are made of cylinders 6 and piston 7. Preferably the piston 7 is located in a bore of the continuous heating plate 3 or 4. With the pressure relief zone a, the possibility of a steam outlet 11 from the mat 10 is given. It is plausible to the person skilled in the art that the transition from a scattered particle mat to a solid material plate is fluid in a continuously operating press and, of course, this could also be referred to as a material plate 10. In addition, it can also be a simultaneous (seen in the direction of 15) relief of the rolling plate 2 below provided, or a varying controlled discharge, z. B. alternately up / down in working direction 15. This is the discretion of the user. Conceivable here is the arrangement of several relief zones from half the pressing length of the continuously operating press, which can be controlled differently. Of course, to achieve maximum deformation of the rolling plates 1 or 2, a relief zone may be disposed on a rolling plate bump, see FIG. 2 , or a somewhat moderate relief zone after FIG. 3 , It is a feature contributing wholly to the rigidity and accuracy of the continuous press that the heating plates 3 or 4 are designed across the entire width of the mat 10 transversely to the working direction 15 as a stable and uninterrupted part. The pressure relief zone a preferably has a length of 50 to 500 mm in the working direction 15 and the residual pressure can be adjusted to 0 by lifting the rolling plate 1 or 2.

Bezugszeichenliste:

1.
Abrollplatten oben
2.
Abrollplatten unten
3.
Heizplatte oben
4.
Heizplatte unten
5.
Stellglieder (hydraulisch/mechanisch)
6.
Zylinder von 5
7.
Kolben von 5
8.
Rollstangen oben
9.
Rollstange unten
10.
Matte / Werkstoffplatte
11.
Dampfaustritt
12.
Stahlband oben
13.
Stahlband unten
14.
Ausnehmung für Druckentlastungszone a
15.
Arbeitsrichtung
a
Druckentlastungszone
LIST OF REFERENCE NUMBERS
1.
Rolling plates above
Second
Rolling plates below
Third
Heating plate above
4th
Heating plate below
5th
Actuators (hydraulic / mechanical)
6th
Cylinder of 5
7th
Piston of 5
8th.
Roll bars above
9th
Roll bar below
10th
Mat / material plate
11th
steam outlet
12th
Steel band above
13th
Steel band below
14th
Recess for pressure relief zone a
15th
working direction
a
Pressure relief zone

Claims (11)

  1. A continuously operating press suitable for the production of chipboard, fiberboard, plastic, scrap board, and wood-based material panels, in which a pressure relief zone (a) is settable in the main pressing line using actuators (5), wherein a zone may be integrated in a decompressing manner during the production in the main pressing line by means of flexible unrolling plates attached to the pressing/heating plates, in that the unrolling plates (1, 2) on the heating plates (3, 4) are decoupled from the full-surface support of the heating plates (3, 4), characterized in that the unrolling plates (1, 2) can be drawn via actuators (5) away from the material panels (10) to be compressed.
  2. The continuously operating press according to Claim 1, characterized in that the actuators (5) are embodied to be double-action.
  3. The continuously operating press according to Claim 1, characterized in that the decoupling of the unrolling plates (1, 2) by means of actuators (5) can be carried out both on the top and also on the bottom heating plates (3, 4).
  4. The continuously operating press according to Claim 1, characterized in that the decoupling of the unrolling plates (1, 2) by means of actuators (5) can be carried out either on the top or on the bottom heating plates (3, 4).
  5. The continuously operating press according to Claims 1 to 4, characterized in that one or more pressure relief zones (a) are arranged in the operating direction (15) from the halfway point of the entire pressing length or the pressing region up to the outlet of the continuously operating press.
  6. The continuously operating press according to Claims 1 to 5, characterized in that a pressure relief zone (a) is arranged at a unrolling plate butt joint to achieve the maximum deformation of the unrolling plates (1, 2).
  7. The continuously operating press according to Claims 1 to 6, characterized in that the heating plates (3 or 4) are designed as a stable and uninterrupted part over the entire width of the mat (10) transversely to the operating direction (15).
  8. The continuously operating press according to Claims 1 to 7, characterized in that the pressure relief zone (a) has a length of 50 to 500 mm in the operating direction (15).
  9. A method for operating a continuously operating press according to Claim 1, which is suitable for the production of the production of chipboard, fiberboard, plastic, scrap, and wood-based material panels, in which a pressure relief zone (a) is settable in the main pressing line using actuators (5), wherein a zone may be integrated in a decompressing manner during the production in the main pressing line by means of flexible unrolling plates attached to the pressing/heating plates, in that the unrolling plates (1, 2) on the heating plates (3, 4) are decoupled from the full-surface support of the heating plates (3, 4), characterized in that in the pressure relief zone (a), the residual pressure can be set down to 0 by raising the unrolling plate (1 or 2).
  10. The method according to Claim 9, characterized by the different activation in the loading or unloading of these separate actuators (5) to influence and/or control the running of the rolling bars (8 and 9).
  11. The method according to Claim 9, characterized in that the pressure relief zones (a), in the case of multiple arrangement in the operating direction (15), can be applied alternately, simultaneously, or in all variation possibilities.
EP20050028479 2005-01-03 2005-12-27 Continuously operating press for making plates and process for operating such press Not-in-force EP1676696B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200510000717 DE102005000717A1 (en) 2005-01-03 2005-01-03 Continuous press for the production of plates

Publications (3)

Publication Number Publication Date
EP1676696A2 EP1676696A2 (en) 2006-07-05
EP1676696A3 EP1676696A3 (en) 2006-12-06
EP1676696B1 true EP1676696B1 (en) 2014-03-12

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DE (1) DE102005000717A1 (en)

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DE112007003417B4 (en) 2007-04-05 2018-09-27 Kronoplus Technical Ag Abrollteilplatten in a continuous press
DE102009023581A1 (en) * 2009-06-02 2010-12-09 Dieffenbacher Gmbh + Co. Kg Continuously operating press for pressing press material to material plate, has continuous steel belts supported by rolling support, and cantilever arms arranged at one of pressing frames in direction of adjacent pressing frame
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CN102765120B (en) * 2012-07-23 2014-11-26 青岛国森机械有限公司 Continuous compaction production line for recombinant bamboo-wood integrated square material
AT523304A1 (en) * 2019-12-19 2021-07-15 Berndorf Band Gmbh Double belt press with at least one pressing device

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DE102005000717A1 (en) 2006-07-20
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