EP0776742B1 - Device for the production of particle boards, fibre boards or the like - Google Patents
Device for the production of particle boards, fibre boards or the like Download PDFInfo
- Publication number
- EP0776742B1 EP0776742B1 EP96810682A EP96810682A EP0776742B1 EP 0776742 B1 EP0776742 B1 EP 0776742B1 EP 96810682 A EP96810682 A EP 96810682A EP 96810682 A EP96810682 A EP 96810682A EP 0776742 B1 EP0776742 B1 EP 0776742B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- rollers
- applying
- metal belt
- roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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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
- 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
- B27N3/26—Moulding or pressing characterised by using continuously acting presses having a heated press drum and an endless belt to compress the material between belt and drum
-
- 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
Definitions
- the invention relates to a device according to the Preamble of claim 1.
- a press line an incorporated one with thermosetting binders mixed, machined or shredded lignocellulosic or cellulose material by printing and Exposure to temperature for a sufficiently long time compacted, hardened and shaped.
- This press section can be in different ways and Formed way, the one to be cured "Cake", for example, between two endless steel belts pressed, heated and molded.
- the "cake" between a drum and this one Steel belt partially encircled is heated and molded.
- this molding process aimed at the product upon entering the molding line, with simultaneous heat input, with a surface pressure of at least 3 N / mm2 and over the to keep the entire press section at this value or each increase this value in a targeted manner after the desired process management or lower.
- This version comes to the Process-oriented goal of a continuous against the high pressure of the cake, but they are clearly existing zones with exclusive pressing due to the tensioned band, due to the relatively large Roller distances due to the large rollers, from considerable expansion.
- the rigidity of these rollers it also makes it impossible to make a targeted and momentary To influence the lateral force in the press section.
- the invention seeks to remedy this.
- the invention as characterized in the claims, solves the Task to create a facility where the Zones with increased pressure expandable and can be influenced by a plurality of rollers with controllable contact pressure in the transverse direction Material direction can be used.
- the illustrated Setup is referred to as a drum press.
- the Device contains a drum 1 with a Outside diameter of e.g. 3 to 5 m, a steel strip 2, which the drum 1 on a large part of their Circumferentially wraps around a roller arrangement 3, 4, 5 and 6, to guide or redirect the steel strip and a Pressure device 7, which has a plurality of pressure rollers 8 contains.
- the roller arrangement comprises a press roller 3, a heating roller 4, a tension roller 5 and a deflection roller 6.
- the roller arrangement is a loop around the Reached drum, which formed a press section P, wherein the pressing force on the one hand by the preload of the Steel band and on the other hand by the majority of Pressure rollers 8 with controllable pressure force curve and relatively small outer diameter is reinforced.
- the pressing device 7 is made in two parts, wherein a section of a press section between the Press roller 3 and the heating roller 4 is provided and the other section in the belt running direction after the heating roller 4 is provided.
- the pressure rollers 8 have different Outer diameter. Pressure rollers are also advantageous an outer diameter of up to about 800 mm.
- the Drum a stationary yoke 10, a jacket 11, the the yoke rotates and five support elements 9, which the Support the jacket against the pressing force of the press section P.
- the support elements 9 are advantageously directly with a Heat transfer medium 12 fed, making an additional Expense for heating the drum by a There is no heating roller.
- the press line in this case continuously by means of pressure rollers 8 with controllable Contact force curve formed.
- the steel strip 2 e.g. with hot air 13 and / or additionally heated by quartz radiators 13 become.
- FIG. 4 is a further embodiment of the Device shown, in which two steel strips 2, one Upper and one lower belt, over two tensioning and Deflection drums 14 are performed.
- the distance between Upper and lower band 2 determines the thickness of the producing plate 16.
- FIG. 5 and 6 shows a pressure roller 8 with controllable bending line, especially one self-adjusting F-roller.
- a pressure roller 8 consists of a fixed support 18 and a rotating jacket 19, which by supporting elements 20th is supported over the entire length.
- the coat 19 consists of a high temperature resistant plastic, which, thanks to balanced fiber reinforcement, is a has optimal radial rigidity.
- the support elements 20 are individually via supply lines 21 if necessary feedable to a good adaptation of the Contact pressure course transverse to the web running direction to the To enable process requirements. It is also one summary supply of the support elements 20 via a common supply line 20 possible, especially in the Such a solution makes sense in the entry zone.
- These pressure rollers 8 can also with an auxiliary drive 17 (in the form of a circumferential driving rope, for example) be who the synchronization of the Roll peripheral speed with the steel belt 2 during of applying or separating the pressure rollers 8 to or made possible by steel strip 2.
- The also serves Auxiliary drive 17 the purpose of one-sided heating of the Jacket 19 of the pressure rollers 8 in the separated state prevent by the pressure rollers 8 continuously and be turned slowly.
- the warehouse section of the self-employed F-roll is designed such that a stroke of the Jacket 19 of at least 8 mm, relative to the yoke 18, in Press direction is made possible.
- Fig. 7 shows a further embodiment of the Press roll shell 19, in which a temperature-resistant plastic 23 or an elastomer with similar properties, on a metallic Carrier tube 23 is applied.
- the device contains a rigid cylindrical Body 1, which is rotatably arranged, one over Rolls 3 - 6 guided endless metal strip 2, the under Formation of a press section with the cylindrical body is in contact and the metal band with pressure pressing device 7, which a plurality of pressure rollers 8 with controllable pressure profile comprises, which are arranged in along the pressing section.
- the number of pressing points is determined by the pressure rollers increased and pressure within the press line is at the Customizable requirements.
- the facility is suitable especially for compacting, curing and molding with thermosetting binders mixed, machined or shredded lignocellulosic or cellulosic material.
Abstract
Description
Die Erfindung betrifft eine Einrichtung gemäss dem
Oberbegriff des Anspruches 1.The invention relates to a device according to the
Preamble of
Bei derartigen Einrichtungen wird auf einer Pressstrecke ein eingebrachtes mit thermohärtenden Bindemitteln vermischtes, zerspantes oder zerfasertes Lignocellulose- oder Cellulose-Material durch Druck- und Temperatureinwirkung während ausreichend langer Zeit verdichtet, ausgehärtet und geformt.In such facilities, a press line an incorporated one with thermosetting binders mixed, machined or shredded lignocellulosic or cellulose material by printing and Exposure to temperature for a sufficiently long time compacted, hardened and shaped.
Diese Pressstrecke kann auf unterschiedliche Art und Weise ausgebildet sein, so wird der auszuhärtende "Kuchen" beispielsweise zwischen zwei Endlosstahlbändern gepresst, erwärmt und geformt. Ebenso sind aus der Druckschrift EP 0 630 725 Maschinen bekannt, bei welchen der "Kuchen" zwischen einer Trommel und einem diese Trommel teilweise umschliessenden Stahlband gepresst, erwärmt und geformt wird. Bei diesem Formprozess wird angestrebt, das Produkt beim Eintritt in die Formstrecke, bei gleichzeitigem Wärmeeintrag, mit einer Flächenpressung von mindestens 3 N/mm2 zu beaufschlagen und über die gesamte Pressstrecke auf diesem Wert zu halten bzw. je nach erwünschter Prozessführung diesen Wert gezielt anzuheben oder abzusenken. Ebenso wird auf dieser Pressstrecke die Platte durch eine geeignete Form der Druckbeaufschlagung, insbesondere mit Hilfe über dem Umfang der Trommel verteilt angeordneten Druckschuhen, auf die erwünschte Enddicke in Längs- und Querrichtung gebracht. Aus den Druckschriften GB 1322144 sowie FR 2383007 sind Ausführungen bekannt, bei welchen eine Heiztrommel mit einem Stahlband umschlungen wird, wobei die erwünschte Flächenpressung in erster Linie durch die Stahlbandvorspannung erzielt wird. Bei dieser Ausführungsform wird die erzielbare Flächenpressung des Stahlbandes in der Pressstrecke örtlich, an 4 - 5 Stellen, zusätzlich durch Beaufschlagen mit relativ grossen Walzen, erhöht. Diese Walzen weisen in der Regel einen Durchmesser von deutlich > 1 m auf, dies ist bei der Verwendung von relativ starren Walzen erforderlich, um die Beanspruchung des Stahlbandes zu reduzieren und um die Verweilzeit des Kuchens im Bereich der erhöhten Pressung auszudehnen. Diese Ausführung kommt dem prozesstechnisch angestrebten Ziel einer kontinuierlich hohen Pressung des Kuchens entgegen, jedoch sind die deutlich vorhanden Zonen mit ausschliesslicher Pressung durch das gespannte Band, infolge der relativ grossen Walzenabstände bedingt durch die grossen Walzen, von erheblicher Ausdehnung. Die Starrheit dieser Walzen verunmöglicht es zudem, einen gezielten und momentanen Einfluss auf die Querkraft in der Pressstrecke zu nehmen.This press section can be in different ways and Formed way, the one to be cured "Cake", for example, between two endless steel belts pressed, heated and molded. Likewise, from the Document EP 0 630 725 machines known in which the "cake" between a drum and this one Steel belt partially encircled, is heated and molded. In this molding process aimed at the product upon entering the molding line, with simultaneous heat input, with a surface pressure of at least 3 N / mm2 and over the to keep the entire press section at this value or each increase this value in a targeted manner after the desired process management or lower. Likewise on this press line the plate through a suitable form of pressurization, especially with help over the scope pressure shoes arranged on the drum, onto which brought the desired final thickness in the longitudinal and transverse directions. From the publications GB 1322144 and FR 2383007 are Versions known in which a heating drum with is wrapped in a steel band, the desired Surface pressure primarily through the Steel belt pretension is achieved. At this Embodiment is the achievable surface pressure of the Steel strip in the pressing section locally, at 4 - 5 Make, additionally by applying relative large rollers, increased. These rollers usually have a diameter of clearly> 1 m, this is at the use of relatively rigid rollers, to reduce the stress on the steel belt and to the dwell time of the cake in the area of the increased To expand the pressure. This version comes to the Process-oriented goal of a continuous against the high pressure of the cake, but they are clearly existing zones with exclusive pressing due to the tensioned band, due to the relatively large Roller distances due to the large rollers, from considerable expansion. The rigidity of these rollers it also makes it impossible to make a targeted and momentary To influence the lateral force in the press section.
Hier will die Erfindung Abhilfe schaffen. Die Erfindung, wie sie in den Ansprüchen gekennzeichnet ist, löst die Aufgabe, eine Einrichtung zu schaffen, bei welcher die Zonen mit erhöhter Pressung ausdehnbar und querbeeinflussbar sind, indem eine Mehrzahl von Walzen mit steuerbarem Anpresskraftverlauf in Querrichtung zur Materiallaufrichtung verwendet werden.The invention seeks to remedy this. The invention, as characterized in the claims, solves the Task to create a facility where the Zones with increased pressure expandable and can be influenced by a plurality of rollers with controllable contact pressure in the transverse direction Material direction can be used.
Die mit der Erfindung erzielbaren Vorteile sind im wesentlichen darin zu sehen, dass:
- durch die Anwendung von Walzen mit den kleinerem Aussendurchmessern die Möglichkeit besteht, die Walzen enger anzuordnen und damit die Anzahl der Stellen mit erhöhter Pressung in der Pressstrecke deutlich anzuheben,
- mit dem Einsatz einer Walze mit quer zur Materiallaufrichtung steuerbarerem Anpresskraftverlauf, den Anpresskraftverlauf perfekt gleichmässig gehalten (Einlaufzone der Pressstrecke), bzw. durch gezieltes Variieren dieses Anpresskraftverlaufes das Dickenprofil des in diesem Stadium noch plastisch verformbaren Produktes in erwünschter Form beeinflusst werden kann (Auslaufzone der Pressstrecke),
- mit der Anwendung eines Laufmantels mit geringer radialer Steifigkeit die Ausdehnung der Pressfuge in Längsrichtung, auch bei Verwendung von kleineren Walzendurchmessern, bewusst ausgedehnt werden kann und damit die unmittelbar örtliche Pressdauer verlängert werden kann,
- mit der Anwendung eines temperaturbeständigen Laufbelages bzw. eines Laufmantels aus selbsttragendem und temperaturbeständigem Kunststoffes die Anschmiegsamkeit verbessert und der Effekt der allenfalls erwünschten Querprofilbeeinflussung deutlich erhöht werden kann,
- durch die Anwendung von F- oder K-Walzen, d.h. selbstanstellend oder konzentrisch geführter Mantel mit einer äusseren Walzenanstellung und die zugehörige Gegenwalze jeweils als konventionelle Walze ohne Querkraftbeeinflussungsmöglichkeit ausgebildet werden kann.
- by using rollers with the smaller outside diameters, it is possible to arrange the rollers more closely and thus significantly increase the number of places with increased pressure in the press section,
- with the use of a roller with a controllable pressure force profile transverse to the material direction, the pressure force profile kept perfectly even (inlet zone of the press section), or by specifically varying this contact force profile, the thickness profile of the product, which is still plastically deformable at this stage, can be influenced in the desired form (outlet zone of the press section ),
- With the use of a barrel jacket with low radial rigidity, the expansion of the press joint in the longitudinal direction can be deliberately extended, even when using smaller roller diameters, and the immediately local pressing time can thus be extended.
- with the application of a temperature-resistant tread or a running jacket made of self-supporting and temperature-resistant plastic, the suppleness can be improved and the effect of the desired cross-sectional influence can be significantly increased,
- through the use of F or K rollers, ie self-adjusting or concentrically guided jacket with an outer roller adjustment and the associated counter roller, each can be designed as a conventional roller without the possibility of influencing the lateral force.
Hieraus ergibt sich der Vorteil einer breiten Anwendung der Formstrecke, z.B. als Flach- oder Trommelpresse.This has the advantage of wide application the molding line, e.g. as a flat or drum press.
Im folgenden wird die Erfindung anhand der beiliegenden Zeichnungen erläutert:
- Fig. 1
- eine bevorzugte Ausbildung der Pressstrecke einer erfindungsgemässen Einrichtung;
- Fig. 2
- eine andere Ausführungsform der erfindungsgemässen Einrichtung mit einer innengestützten Trommel;
- Fig. 3
- eine Einzelheit A in Fig. 1 im grösseren Massstab;
- Fig. 4
- eine dritte Ausführungsform einer erfindungsgemässen Einrichtung;
- Fig. 5
- eine teilweise im Schnitt dargestellte Ausführungsform einer erfindungsgemässen Anpresswalze mit steuerbarem Anpresskraftverlauf;
- Fig. 6
- einen Schnitt entlang der Linie VI-VI in Fig. 5;
- Fig. 7
- einen Abschnitt einer Ausführungsform eines Mantels und
- Fig. 8
- einen Abschnitt einer anderen Ausführungsform eines Mantels.
- Fig. 1
- a preferred embodiment of the press section of a device according to the invention;
- Fig. 2
- another embodiment of the device according to the invention with an internally supported drum;
- Fig. 3
- a detail A in Figure 1 on a larger scale.
- Fig. 4
- a third embodiment of a device according to the invention;
- Fig. 5
- an embodiment of a pressure roller according to the invention shown in section with a controllable pressure force curve;
- Fig. 6
- a section along the line VI-VI in Fig. 5;
- Fig. 7
- a portion of an embodiment of a jacket and
- Fig. 8
- a portion of another embodiment of a jacket.
Es wird auf die Fig. 1 Bezug genommen. Die dargestellte
Einrichtung wird als Trommelpresse bezeichnet. Die
Einrichtung enthält eine Trommel 1 mit einem
Aussendurchmesser von z.B. 3 bis 5 m, ein Stahlband 2,
welches die Trommel 1 auf einem grossen Teil ihres
Umfanges umschlingt, eine Walzenanordnung 3, 4, 5 und 6,
um das Stahlband zu führen bzw. umzulenken und eine
Anpressvorrichtung 7, die eine Mehrzahl von Anpresswalzen
8 enthält. Die Walzanordnung umfasst eine Presswalze 3,
eine Heizwalze 4, eine Spannwalze 5 und eine Umlenkwalze
6. Durch die Walzenanordnung wird eine Umschlingung der
Trommel erreicht, die eine Pressstrecke P gebildet, wobei
die Presskraft einerseits durch die Vorspannung des
Stahlbandes und andererseits durch die Mehrzahl von
Anpresswalzen 8 mit steuerbarem Anpresskraftverlauf und
relativ geringem Aussendurchmesser verstärkt wird.Reference is made to FIG. 1. The illustrated
Setup is referred to as a drum press. The
Device contains a
Die Anpressvorrichtung 7 ist zweiteilig ausgeführt, wobei
ein Abschnitt an einer Pressstrecke, die zwischen der
Presswalze 3 und der Heizwalze 4 vorgesehen ist und der
andere Abschnitt in Bandlaufrichtung nach der Heizwalze 4
vorgesehen ist. Die Anpresswalzen 8 haben verschiedene
Aussendurchmesser. Mit Vorteil werden Anpresswalzen mit
einem Aussendurchmesser bis etwa 800 mm angewendet.The
Bei der in Fig. 2 gezeigten Ausführungsform enthält die
Trommel ein ortsfestes Joch 10, einen Mantel 11, der um
das Joch rotiert und fünf Stützelemente 9, welche den
Mantel gegen die Presskraft der Pressstrecke P abstützen.
Die Stützelemente 9 werden mit Vorteil direkt mit einem
Wärmeträgermedium 12 gespeist, wodurch ein zusätzlicher
Aufwand für die Beheizung der Trommel durch eine
Heizwalze entfällt. Die Pressstrecke wird in diesem Falle
durchgehend mittels Anpresswalzen 8 mit steuerbarer
Anpresskraftverlauf ausgebildet.In the embodiment shown in FIG. 2, the
Drum a stationary yoke 10, a
Zwischen den Anpresswalzen 8 kann, wie in Fig. 3
dargestellt ist, das Stahlband 2 z.B. mit Heissluft 13
und/oder durch Quarzstrahlern 13 zusätzlich aufgeheizt
werden.Between the
In Fig. 4 ist eine weitere Ausführungsform der
Einrichtung dargestellt, bei der zwei Stahlbänder 2, ein
Ober- und ein Unterband, über je zwei Spann- und
Umlenktrommeln 14 geführt werden. Der Abstand zwischen
Ober- und Unterband 2, bestimmt die Dicke der zu
produzierende Platte 16. Auf der gesamten Länge der
Pressstrecke sind Walzenpaare 26 angeordnet, welche im
dargestellten Falle jeweils aus einer konventionellen
Walze 15 und einer Anpresswalze 8 mit steuerbarem
Anpresskraftverlauf gebildet wird.4 is a further embodiment of the
Device shown, in which two
Die Fig. 5 und 6 zeigt eine Anpresswalze 8 mit
steuerbarer Biegelinie, insbesondere eine
selbstanstellende F-Walze. Eine derartige Anpresswalze 8
besteht aus einem ortsfesten Träger 18 und einem
rotierenden Mantel 19, welcher durch Stützelemente 20
über die gesamte Länge abgestützt ist. Der Mantel 19
besteht aus einem hochtemperaturbeständigen Kunststoff,
welcher, dank ausgewogener Faserverstärkung, eine
optimale Radialsteifigkeit aufweist. Die Stützelemente 20
sind im Bedarfsfalle einzeln über Zuleitungen 21
anspeisbar, um eine gute Anpassung des
Anpresskraftverlaufes quer zur Bahnlaufrichtung an die
Prozesserfordernisse zu ermöglichen. Es ist auch eine
summarische Versorgung der Stützelemente 20 über eine
gemeinsame Zuleitung 20 möglich, speziell in der
Einlaufzone ist eine derartige Lösung durchaus sinnvoll.5 and 6 shows a
Diese Anpresswalzen 8 können zudem mit einem Hilfsantrieb
17 (in Form z.B. eines umlaufenden Treibseiles) versehen
sein, welcher die Synchronisation der
Walzenumfangsgeschwindigkeit mit dem Stahlband 2 während
des Anlegens oder Separierens der Anpresswalzen 8 zum
oder vom Stahlband 2 ermöglicht. Ebenso dient der
Hilfsantrieb 17 dem Zweck, ein einseitiges Erwärmen des
Mantels 19 der Anpresswalzen 8 im separierten Zustand zu
verhindern, indem die Anpresswalzen 8 kontinuierlich und
langsam gedreht werden.These
Die Lagerpartie der dargestellten, selbstanstellenden
F-Walze, ist derart ausgestaltet, dass ein Hub des
Mantels 19 von mindestens 8 mm, relativ zum Joch 18, in
Pressrichtung ermöglicht wird.The warehouse section of the self-employed
F-roll, is designed such that a stroke of the
Fig. 7 zeigt eine weitere Ausführungsform des
Presswalzenmantels 19, bei welcher ein
temperaturbeständiger Kunststoff 23 oder ein Elastomer
mit ähnlichen Eigenschaften, auf ein metallisches
Trägerrohr 23 aufgebracht ist.Fig. 7 shows a further embodiment of the
In Fig. 8 ist eine Ausführung in Form eines metallischen
Mantels 25, mit einer durch Rollverdichten verbesserten
Aussenoberflächenschicht 25, dargestellt, was die
Beständigkeit der Manteloberfläche erheblich verbessert.8 is an embodiment in the form of a
Die Einrichtung enthält einen starren zylindrischen
Körper 1, der drehbeweglich angeordnet ist, eine über
Walzen 3 - 6 geführtes endloses Metallband 2, das unter
Bildung einer Pressstrecke mit dem zylindrischen Körper
in Kontakt steht und eine das Metallband mit Druck
beaufschlagenden Anpressvorrichtung 7, die eine Mehrzahl
von Anpresswalzen 8 mit steuerbaren Anpressverlauf
umfasst, die in entlang der Pressstrecke angeordnet sind.The device contains a rigid
Durch die Anpresswalzen wird die Anzahl der Pressstellen erhöht und Pressung innerhalb der Pressstrecke ist an die Erfordernisse anpassbar. Die Einrichtung eignet sich insbesondere zum Verdichten, Aushärten und Formen von mit thermohärtenden Bindemitteln vermischtes, zerspantes oder zerfasertes Lignocellulose- oder Cellulose-Material.The number of pressing points is determined by the pressure rollers increased and pressure within the press line is at the Customizable requirements. The facility is suitable especially for compacting, curing and molding with thermosetting binders mixed, machined or shredded lignocellulosic or cellulosic material.
Claims (9)
- Apparatus for the manufacture of chipboard, fibreboard or the like with at least one rigid cylindrical body (1) which is mounted rotatably, with at least one endless metal belt (2) guided over rollers (3, 4, 5, 6) in such a way that between the cylindrical body (1) and the metal belt (2) is formed a pressing zone, and with a pressure-applying device (7) which applies pressure to the metal belt (2), characterised in that the pressure-applying device (7) includes a plurality of pressure-applying rollers (8) of controllable pressure-applying gradient which are arranged, spaced apart from each other, along the pressing zone, and in that the pressure-applying rollers (8) have·a running shell (19) which is either self-supporting and made of temperature-resistant plastic, or includes a shell surface which is provided with a coating of temperature-resistant plastic, elastomer or the like.
- Apparatus according to claim 1, characterised by a plurality of cylindrical bodies (15) which are arranged in a straight line and spaced apart from each other to support the metal belt and by a second metal belt (2) which is guided over rollers (14) and which is guided parallel to the first metal belt (2), forming a pressing zone, and is in contact with the plurality of pressure-applying rollers (8) of controllable pressure-applying gradient in order to apply pressure to the second metal belt (2).
- Apparatus according to either of claims 1 or 2, characterised in that the pressure-applying rollers (8) have different outside diameters.
- Apparatus according to any of claims 1 to 3, characterised by a heating source (13) for heating the metal belt (2).
- Apparatus according to any of claims 1 to 4, characterised in that the cylindrical body is a drum (1).
- Apparatus according to any of claims 1 to 5, characterised in that the cylindrical body is a roller (15).
- Apparatus according to any of claims 1 to 6, characterised in that the drum (1) and the pressure-applying rollers (8) each have a non-rotatable carrier (10), a shell (11) rotatable relative to the latter and several support elements (9) arranged adjacent to each other in the axial direction with individually adjustable supporting force for supporting the shell.
- Apparatus according to any of claims 1 to 7, characterised in that the pressure-applying roller (8) is a deflection-compensated roller.
- Apparatus according to any of the preceding claims, characterised in that the running shell (19) comprises an outer surface layer (25) of fibre-reinforced plastic.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH03384/95A CH690757A5 (en) | 1995-11-29 | 1995-11-29 | Means for the production of particleboard or fiberboard. |
| CH338495 | 1995-11-29 | ||
| CH3384/95 | 1995-11-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0776742A1 EP0776742A1 (en) | 1997-06-04 |
| EP0776742B1 true EP0776742B1 (en) | 2001-08-22 |
Family
ID=4254797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96810682A Expired - Lifetime EP0776742B1 (en) | 1995-11-29 | 1996-10-11 | Device for the production of particle boards, fibre boards or the like |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0776742B1 (en) |
| AT (1) | ATE204526T1 (en) |
| CH (1) | CH690757A5 (en) |
| DE (1) | DE59607528D1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1394425A2 (en) | 2002-08-26 | 2004-03-03 | Voith Paper Patent GmbH | Controlled deflection roll |
| DE10239097A1 (en) * | 2002-08-26 | 2004-03-11 | Voith Paper Patent Gmbh | Deflection roll |
| DE10239089A1 (en) * | 2002-08-26 | 2004-03-11 | Voith Paper Patent Gmbh | Slip ring for papermaking machine, chipboard mill, printing press, decor paper printing press or textile machine has elastic tilt-ring between crown and base |
| CN1812872B (en) * | 2003-02-26 | 2010-04-28 | 克隆纳斯板技术有限公司 | Press and method for producing panel board |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10237534A1 (en) * | 2002-08-16 | 2004-02-26 | Voith Paper Patent Gmbh | Device for producing a material web |
| DE10237535A1 (en) | 2002-08-16 | 2004-03-04 | Voith Paper Patent Gmbh | Device for the production of material webs |
| DE10237530A1 (en) * | 2002-08-16 | 2004-02-26 | Voith Paper Patent Gmbh | Device for the production of material webs |
| DE10237826A1 (en) * | 2002-08-19 | 2004-03-11 | Voith Paper Patent Gmbh | Device for the production of material webs |
| JP4858288B2 (en) | 2006-06-22 | 2012-01-18 | トヨタ自動車株式会社 | Manufacturing method of rotating linear motion conversion mechanism and jig used for its implementation |
| RU2437704C1 (en) * | 2010-06-09 | 2011-12-27 | Дмитрий Борисович Никишичев | Filter-separator |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT310424B (en) * | 1971-02-10 | 1973-09-25 | Berstorff Gmbh Masch Hermann | Device for the continuous production of thin chipboard |
| DE2110754A1 (en) * | 1971-03-06 | 1972-09-21 | Siempelkamp Gmbh & Co | Continuous chipboard making machine - with arcuate plates cooperating with presser drum and pressed by rollers against chip spreading conveyor |
| US3942929A (en) * | 1972-03-08 | 1976-03-09 | Bison-Werke Bahre & Greten Gmbh & Co. Kg | Continuously operating press |
| DE2523670B2 (en) * | 1975-05-28 | 1978-11-02 | Feldmuehle Ag, 4000 Duesseldorf | Process for the continuous production and simultaneous coating of chipboard, which is covered with at least one cover layer made of synthetic resin-impregnated paper |
| DE2710000A1 (en) * | 1977-03-08 | 1978-09-14 | Berstorff Gmbh Masch Hermann | EQUIPMENT FOR THE CONTINUOUS MANUFACTURING OF CHIPBOARD, FIBERBOARD OR THE SAME |
| CN1009443B (en) * | 1986-11-14 | 1990-09-05 | 库特·赫尔德·法布里肯特 | Process and apparatus for producing composite wood sheet |
| EP0630726B1 (en) * | 1993-06-25 | 1998-09-16 | De Pretto-Escher Wyss s.r.l. | Device for the continuous production of particle boards, fibre boards or the like |
| SE502272C2 (en) * | 1994-01-28 | 1995-09-25 | Sunds Defibrator Ind Ab | Process for making lignocellulosic discs |
-
1995
- 1995-11-29 CH CH03384/95A patent/CH690757A5/en not_active IP Right Cessation
-
1996
- 1996-10-11 DE DE59607528T patent/DE59607528D1/en not_active Expired - Lifetime
- 1996-10-11 AT AT96810682T patent/ATE204526T1/en active
- 1996-10-11 EP EP96810682A patent/EP0776742B1/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1394425A2 (en) | 2002-08-26 | 2004-03-03 | Voith Paper Patent GmbH | Controlled deflection roll |
| DE10239097A1 (en) * | 2002-08-26 | 2004-03-11 | Voith Paper Patent Gmbh | Deflection roll |
| DE10239089A1 (en) * | 2002-08-26 | 2004-03-11 | Voith Paper Patent Gmbh | Slip ring for papermaking machine, chipboard mill, printing press, decor paper printing press or textile machine has elastic tilt-ring between crown and base |
| DE10239096A1 (en) * | 2002-08-26 | 2004-03-11 | Voith Paper Patent Gmbh | roller |
| CN1812872B (en) * | 2003-02-26 | 2010-04-28 | 克隆纳斯板技术有限公司 | Press and method for producing panel board |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59607528D1 (en) | 2001-09-27 |
| CH690757A5 (en) | 2001-01-15 |
| ATE204526T1 (en) | 2001-09-15 |
| EP0776742A1 (en) | 1997-06-04 |
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