EP3360675B1 - Presse continue permettant la fabrication des plaques en matériau dérivé du bois - Google Patents

Presse continue permettant la fabrication des plaques en matériau dérivé du bois Download PDF

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Publication number
EP3360675B1
EP3360675B1 EP17207303.3A EP17207303A EP3360675B1 EP 3360675 B1 EP3360675 B1 EP 3360675B1 EP 17207303 A EP17207303 A EP 17207303A EP 3360675 B1 EP3360675 B1 EP 3360675B1
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EP
European Patent Office
Prior art keywords
press
supply
continuous press
pressure plates
lines
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.)
Active
Application number
EP17207303.3A
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German (de)
English (en)
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EP3360675A1 (fr
Inventor
Horst Weiss
Klaus Schürmann
Siegbert Halswick
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.)
Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
Original Assignee
Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
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Publication of EP3360675A1 publication Critical patent/EP3360675A1/fr
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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
    • B27N3/26—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
    • 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
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/24—Moulding or pressing characterised by using continuously acting presses having endless belts or chains moved within the compression zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/062—Press plates
    • B30B15/064—Press plates with heating or cooling means

Definitions

  • the invention relates to a continuous press for the production of wood-based panels, the press each having an upper belt and a lower belt rotating with the formation of a press gap, which can be supplied with a heat transfer medium with the aid of at least partially heatable pressure plates, and which can be supplied with a heat transfer medium via inlet and outlet lines running along the press which can be pressed against a mat made of a wood fiber material, in that at least part of the pressure plates can be subjected to pressure via actuators supported on a frame.
  • a so-called double belt press is usually used today.
  • Two circulating steel belts run parallel to each other under pressure over the pressing section, in which the wood fiber material is continuously pressed to form a wood material board. They are usually guided over rolling bodies, which in turn are supported on at least partially heatable pressure plates, of which either the upper one, or the lower one, or both, can be acted upon by hydraulic cylinders that are supported on the press frame.
  • Branch lines run from the inlet and outlet lines to the connections of the heatable pressure plates. Due to the thermal expansion described Pressure plates are used here, at least in sections, with hoses that take part in the movements caused by expansion.
  • the heatable printing plates can have a total linear expansion of more than 150 mm at normal flow temperatures of the heating medium, for example thermal oil of over 250°C. This lengthening usually takes place within several frames connected in series.
  • the pressure plate or the pressure plates placed together are fixed at one point in the double belt press and the remaining part can expand unhindered and slidably supported.
  • Pressure plates can be arranged both in the upper belt and in the lower belt circulation and can be pressed against one of the circulating belts via actuators, for example hydraulic cylinders, with the interposition of rolling bodies and thus compress the wood fiber material in the press gap between the belts.
  • DE 42 08 262 A1 discloses a continuous press for the production of wood-based panels according to the preamble of claim 1.
  • the inventors make use of the knowledge that the heat transfer medium in the inlet and/or outlet lines and in the pressure plates has only a small temperature difference. Due to the support and guidance on a plain bearing, the lines can expand accordingly, just like the pressure plates. The branching points on the inlet and outlet lines thus remain essentially in the same position as seen in the longitudinal direction of the press in relation to the connections on the pressure plates. If at all necessary and not designed as fixed piping, only short hose connections are to be provided as branch connections. However, these hose connections only become effective when the press is heating up and cooling down, since there is then a greater temperature difference between the inlet and outlet lines and the pressure plate for a short time.
  • the shifting of the connections of pressure plates and lines is significantly smaller than if the lines are attached to the frame of the press as is customary today, for example without sliding bearings.
  • the inlet and outlet lines can expand unhindered and the branch lines can be kept “at the same level” in relation to the connections on the heated pressure plates.
  • the heatable pressure plates and the inlet and outlet lines are fixed in the first third of the press in the conveying direction.
  • both the pressure plates and the inlet and outlet lines are fixed in the same plane X, which is aligned transversely to the longitudinal direction of the press.
  • the heatable pressure plates and the inlet and outlet lines can expand forwards and backwards in the same order of magnitude.
  • both the material of the heatable pressure plates and that of the inlet and outlet lines have essentially the same coefficient of thermal expansion.
  • At least one inlet or outlet line preferably has at least one joint.
  • the distance between the connections on the pressure plate and those on the inlet and outlet lines may vary slightly. before against this background, the connecting line is less stressed and better protected by means of an adjustment by the inclined position of the line to the curvature of the pressure plate.
  • the inlet and outlet lines are advantageously arranged under a hall floor of a hall in which the press is located, and in particular independently of the frame construction.
  • the lines can expand unhindered by the temperature increase due to the heat transfer medium, without being prevented from doing so by being coupled to the frame. And secondly, considerable free space can be realized on both sides of the press, which, for example, allows unhindered maintenance work or offers the possibility of bringing a collecting funnel arrangement to the side of the press gap. Because during production, the high temperatures and pressures, especially at the end of the press, cause the moisture trapped in the wood fibers to evaporate. The resulting gas pressure causes wood chips or other wood particles to be ejected sideways out of the press gap.
  • connections for the heat transfer medium are preferably arranged on the pressure plates on a side facing away from the press gap.
  • the figures 1 , 2 and 3 show the same system of a continuous double belt press 2 from different perspectives and in 1 additionally a device for removing wood chips 1.
  • the description of figure 1 initially serves to describe the basics of the continuous press 2 according to the invention, whose details essential to the invention are only explained in detail in the enlarged figures 2 and 3 to be discribed.
  • the pressing process of a double-belt press takes place via upper pressure plates 7 and lower pressure plates 8, of which at least one is pressed by actuators 9, for example hydraulic pressure cylinders with the interposition of rolling bodies, not shown, against at least one circulating belt 3, 4 and thus the press gap 5 close and act on the wood material 6 with pressure.
  • the pressure cylinders 9 are fastened to individual frames 13, for example, and are supplied with pressure oil from a hydraulic station 10, for example. Their pressures can vary from cylinder to cylinder over the width and length of the continuous press and can be adjusted separately.
  • the lower run of the upper belt 3 and the upper run of the lower belt 4 form the press nip 5 within the frame 13 and are deflected via guide rollers (not shown) at the beginning and end of the press and finally fed back above or below the frame 13 .
  • the heatable printing plates are usually supplied with a heating medium, for example fuel oil, via supply and discharge lines 11 and branch lines 12 running along the continuous press, which runs through channels in the printing plates 7, 8 and thus the press gap 5 or the wood-based material 6 additionally heated.
  • a heating medium for example fuel oil
  • supply and discharge lines 11 and branch lines 12 running along the continuous press, which runs through channels in the printing plates 7, 8 and thus the press gap 5 or the wood-based material 6 additionally heated.
  • the water in the wood-based material 6 evaporates, and the steam pressure drives wood chips out of the press gap to the side, which without the device for removing wood chips or other wood particles 1 can lead to major contamination and even to the risk of burning the fibers on the supply lines for the heating medium can.
  • the device for removing wood chips or other wood particles 1 in 1 a collecting funnel arrangement 15 with individual funnels 16 between the frames 13.
  • the sheet metal forming the funnel can have maintenance flaps 17 .
  • the funnels are designed in such a way that the chips blown out laterally from the press gap 6 go directly to a mechanical transport device 18, in accordance with this exemplary embodiment 1 a screw conveyor 19.1, 19.2, are fed.
  • the chips are transported to a suction device 20 in these screw conveyors 19.1, 19.2.
  • a suction device no longer has a harmful effect on the side edges of the wood-based material 6.
  • two screw conveyors 19.1 and 19.2 are arranged one above the other and overlapping.
  • the screw conveyor 19.1 transfers the conveyed material to the screw conveyor 19.2, which also simultaneously picks up the discharged chips from the last section of the collecting funnel arrangement 15. By shortening a possible long worm to two shorter ones, the installation space for the drives can be reduced.
  • the screw conveyor 19.2 transfers the removed chips to the suction device 20.
  • the screw conveyors 19.1, 19.2 and the funnel arrangement 15 form a common structural unit 21 on each side of the continuous double belt press 2, which can be moved on rails 22 over the hall floor 23 and thus more or less spaced apart from the continuous double belt press. In this way, for example, free space can be created for maintenance work. For this reason, the assembly is 21 in 1 drawn on the right in two different end positions E1 and E2.
  • the inlet and outlet lines 11 run parallel to the press. Two lines 24.1 and 24.2 or 25.1 and 25.2 are shown both under the hall floor 23 and above the upper heatable pressure plate 7. the Lines numbered 24 are the supply lines and lines numbered 25 are the return lines. The branch lines 12 lead from these inlet and outlet lines to the heatable pressure plates 7, 8.
  • the inlet and outlet lines 11 themselves are supplied and disposed of via a supply line system 26. They are either at one end of the press or in the area of the frames 13.
  • the heated printing plates 7, 8 supplied with, for example, over 250 ° C hot thermal oil, with a total length of z. B. 70 m total over 150 mm (in 3 i.e. into the page level), it must be ensured that the stub lines are not offset too much.
  • Both the pressure plates 7, 8 are attached to the frame in the plane X and can expand in both directions as desired. Since the press is hottest in the first third in conveying direction F, level X should also be in the first third.
  • the frame number shows that level X at the beginning of the press is 2, because a 70 m long press has about 80 frames 13.
  • the supply and/or discharge lines 11, 24.1, 24.2, 25.1, 25.2 for the heat transfer medium and the connections on the heatable pressure plates 7, 8 do not move against one another, the supply and/or discharge lines 11, 24.1, 24.2 , 25.1, 25.2 supported in guides 27 on plain bearings 28. Since they have approximately the same coefficient of thermal expansion as the pressure plates 7, 8, the connections of both units move synchronously during thermal expansion.
  • the inlet and/or outlet lines 11, 24.1, 24.2, 25.1, 25.2 are provided with joints 29 at some points.
  • the inlet and/or outlet lines 11, 24.1, 24.2, 25.1, 25.2 are advantageously located either below the hall floor 23 or above the press gap 5. This creates the possibility of installing a device for removing wood chips or other wood particles 1.
  • connections 30 are arranged on the pressure plates 7 , 8 on a side facing away from the press gap 5 . This also increases the installation space on the side of press 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Claims (7)

  1. Presse en continu destinée à la fabrication de panneaux en matériaux dérivés du bois, sachant que la presse comporte une bande supérieure (3) et une bande inférieure (4) circulant en formant un interstice de pressage (5), à l'aide de plaques de pressage pouvant être chauffées au moins en partie, qui peuvent être alimentées avec un agent caloporteur par des conduites d'alimentation et d'évacuation (11, 24.1, 24.2, 25.1, 25.2) passant le long de la presse et qui peuvent être pressées contre une natte dans un matériau à base de fibres de bois, une partie au moins des plaques de pressage (7, 8) pouvant être sollicitée en pression par des actionneurs (9) s'appuyant sur un cadre (13), caractérisée en ce qu'au moins une conduite d'alimentation et/ou d'évacuation (11, 24.1, 24.2, 25.1, 25.2) pour l'agent caloporteur destiné à chauffer les plaques de pressage (7, 8) passant en direction longitudinale de la presse est appuyée sur des paliers lisses (28) et en ce que tant les plaques de pressage chauffées (7, 8) que les conduites d'alimentation ou d'évacuation (11, 24.1, 24.2, 25.1, 25.2) sont fixées dans un premier tiers de la presse en continu (2) en direction du transport (F).
  2. Presse en continu selon la revendication 1, caractérisée en ce que tant les plaques de pressage chauffées (7, 8) que les conduites d'alimentation ou d'évacuation (11, 24.1, 24.2, 25.1, 25.2) sont fixées dans le même plan (X) orienté transversalement à la direction longitudinale de la presse.
  3. Presse en continu selon l'une quelconque des revendications 1 ou 2, caractérisée en ce que tant le matériau des plaques de pressage chauffées (7, 8) que celui des conduites d'alimentation ou d'évacuation (11, 24.1, 24.2, 25.1, 25.2) a pour l'essentiel le même coefficient de dilatation thermique.
  4. Presse en continu selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'au moins une conduite d'alimentation ou d'évacuation (11, 24.1, 24.2, 25.1, 25.2) comporte au moins une articulation.
  5. Presse en continu selon l'une quelconque des revendications 1 à 4, caractérisée en ce que les conduites d'alimentation ou d'évacuation (11, 24.1, 25.1) passant latéralement au côté longitudinal de la presse en continu (2) sont disposées sous un sol de bâtiment (23) d'un bâtiment dans lequel se trouve la presse (2).
  6. Presse en continu selon la revendication 5, caractérisée en ce que les conduites d'alimentation et ou d'évacuation (11, 24.1, 25.1) sont indépendantes de la structure du cadre.
  7. Presse en continu selon l'une quelconque des revendications 1 à 6, caractérisée en ce que les raccords (30) pour le milieu caloporteur sur les plaques de pressage (7, 8) sont disposés sur un côté opposé à l'interstice de pressage (5).
EP17207303.3A 2017-01-18 2017-12-14 Presse continue permettant la fabrication des plaques en matériau dérivé du bois Active EP3360675B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017000392.0A DE102017000392A1 (de) 2017-01-18 2017-01-18 Kontinuierliche Presse zur Herstellung von Holzwerkstoffplatten

Publications (2)

Publication Number Publication Date
EP3360675A1 EP3360675A1 (fr) 2018-08-15
EP3360675B1 true EP3360675B1 (fr) 2022-09-07

Family

ID=60781539

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17207303.3A Active EP3360675B1 (fr) 2017-01-18 2017-12-14 Presse continue permettant la fabrication des plaques en matériau dérivé du bois

Country Status (3)

Country Link
EP (1) EP3360675B1 (fr)
CN (1) CN108327038B (fr)
DE (1) DE102017000392A1 (fr)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1154927B (de) 1961-09-07 1963-09-26 Krantz H Fa Etagenpresse mit vorzugsweise durch fluessige Heizmittel beheizten Heizplatten
DE1225452B (de) * 1963-03-28 1966-09-22 Kraftanlagen Ag Gleitlager fuer in Schutzrohren verlegte, Waermedehnungen unterworfene Rohrleitungen
DE3216121C2 (de) * 1982-04-30 1986-01-23 Witzenmann GmbH, Metallschlauch-Fabrik Pforzheim, 7530 Pforzheim Rollenlager für die Lagerung von heiß- oder kaltgehenden Bauteilen
DD260742A1 (de) * 1987-05-21 1988-10-05 Inst F Ingenieur U Tiefbau Lei Auflagerstein als gleitlager fuer rohrleitungen
DE3914793A1 (de) * 1989-05-05 1990-11-08 Witzenmann Metallschlauchfab Rollenlager fuer die lagerung von heiss- und kaltgehenden bauteilen
DE4010308C2 (de) 1990-03-30 1995-04-06 Dieffenbacher Gmbh Maschf Kontinuierlich arbeitende Presse
US5213819A (en) * 1990-03-30 1993-05-25 Maschinenfabrik, J. Dieffenbacher Gmbh & Co. Continuously operating press
DE4208262A1 (de) * 1992-03-14 1993-09-16 Siempelkamp Gmbh & Co Kontinuierliche presse fuer das pressen einer pressgutmatte im zuge der herstellung von spanplatten, faserplatten u. dgl.
DE10100895C2 (de) 2001-01-11 2002-12-12 Siempelkamp Gmbh & Co Kg G Anlage zum Absaugen von Luftverunreinigungen bei der Herstellung von Holzwerkstoffplatten, insbesondere MDF-Platten, Spanplatten oder dgl.
DE10114381A1 (de) 2001-03-23 2002-10-10 Metso Paper Inc Verfahren zur kontinuierlichen Herstellung von Holzspanplatten und ähnlichen bahnförmigen Plattenwerkstoffen und dafür geeignete Doppelbandpresse
DE10123793C2 (de) 2001-05-16 2003-08-21 Metso Paper Inc Verfahren zur kontinuierlichen Herstellung von Holzspanplatten und ähnlichen bahnförmigen Plattenwerkstoffen und entsprechende Doppelbandpresse
CN205021735U (zh) * 2015-09-16 2016-02-10 重庆佰嘉木业有限责任公司 一种多层木工板热压机

Also Published As

Publication number Publication date
DE102017000392A1 (de) 2018-07-19
EP3360675A1 (fr) 2018-08-15
CN108327038A (zh) 2018-07-27
CN108327038B (zh) 2021-06-04

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