EP2233261B1 - Procédé pour le pressage de tapis au moyen d'une machine de pressage en continu et appareil pour réaliser le procédé - Google Patents

Procédé pour le pressage de tapis au moyen d'une machine de pressage en continu et appareil pour réaliser le procédé Download PDF

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Publication number
EP2233261B1
EP2233261B1 EP20100157362 EP10157362A EP2233261B1 EP 2233261 B1 EP2233261 B1 EP 2233261B1 EP 20100157362 EP20100157362 EP 20100157362 EP 10157362 A EP10157362 A EP 10157362A EP 2233261 B1 EP2233261 B1 EP 2233261B1
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EP
European Patent Office
Prior art keywords
press
feed inlet
conveyor belt
thickness
mats
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
EP20100157362
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English (en)
French (fr)
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EP2233261A1 (de
Inventor
Qun Liu
Peiguo Wu
Zhenxiang Sheng
Wei Chen
Qunfei Yue
Gang Huang
Ruihua Zhu
Guofu Qu
Jianli Xue
Xueping Wang
Wenxia Yu
Jian Yang
Xinnan Wang
Debiao Hu
Hailiang Jiao
Yongzhong Yang
Yi SHEN
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.)
China Foma (Group) Co Ltd
Suzhou SUFOMA Machinery Co Ltd
Zhenjiang ZHONGFOMA Machinery Co Ltd
Original Assignee
China Foma (Group) Co Ltd
Suzhou SUFOMA Machinery Co Ltd
Zhenjiang ZHONGFOMA Machinery Co Ltd
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Application filed by China Foma (Group) Co Ltd, Suzhou SUFOMA Machinery Co Ltd, Zhenjiang ZHONGFOMA Machinery Co Ltd filed Critical China Foma (Group) Co Ltd
Publication of EP2233261A1 publication Critical patent/EP2233261A1/de
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    • 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

Definitions

  • the invention relates to a method according to the preamble of claim 1 of pressing mats continuously with a continuous press and an apparatus according to the preamble of claim 7 for performing the method.
  • the apparatus comprises a continuous press for continuously pressing mats and a conveyor belt for transporting the mats to be pressed to the press.
  • the profile shape of the feed inlet of the press is changed based on the thickness of the pressed mats. For example, when pressing a thick press plate, the feed inlet should be wide; while pressing a thin press plate, the feed inlet is opened narrowly.
  • the profile or the shape of the feed inlet is adjusted in time based on the thickness of the mats to be pressed to adapt to different mats.
  • the profile of the feed inlet of the press is adjusted by bending the whole heated press plates at the entrance side of the press or by dividing the heated press plates at the entrance side into some sections and adjusting each section.
  • US 4,850,846 which is considered the most relevant prior art document, discloses an apparatus for hot-pressing mats to make chipboard, fiberboard and other forms of pressed board.
  • the apparatus comprises a continuously operating press with a lower press belt and an upper press belt, and a conveyor to deliver the mat to be pressed to the press.
  • a delivery nose of the conveyor is movable in different directions in the feed inlet depending on the thickness of the mat to be pressed.
  • DE 10 2006 059 564 A1 discloses another apparatus for pressing boards where the size of the mouth of the press between the upper and lower press plates is enhanced or reduced depending on the mass of the material to be pressed.
  • the method of continuously pressing mats with a continuous press comprises:
  • two opposite heated press plates form an inlet section of the press.
  • the opposite surfaces of the two press plates are curved surfaces, and the other surfaces of them are flat surfaces.
  • the shape of the feed inlet is relatively fixed. That is, the opposite surfaces of the two inlet sections forming the feed inlet of the press are fixed in shape. Therefore, it can adjust the position of the front parts of the conveyor with relation to the feed inlet to press the mats with different thickness. According to the method of the invention, it is possible to finely adjust the feed inlet to adapt to the different thickness of the panels.
  • the controller calculates the amount of movement of the conveyor according to the thickness of the mats to be pressed, and transmits the control signal to a driving device for driving the conveyor on that basis to move the conveyor a defined distance according to the control signal.
  • the mats with different thickness are pressed by adjusting the position of the conveyor and the shape of the feed inlet is fixed. Since the whole press plates of the feed inlet are not bent or have no joints, the structure of the press is simplified, and an even pressure is applied on the mats at the entrance. Thus, the surfaces of the final boards are dense and the running steel belts are not dramatically worn. Also, it is possible to press the mats at a high speed.
  • the controller controls the cylinders by controlling the cylinders to adjust the distance of the upper and lower press plates to the press gap.
  • a pressure is applied to the feed inlet from the upside or downside or the upside together with the downside along a direction perpendicular to the moving direction of the mats.
  • the movement of the front part of the conveyor is led. That is to say, the movement track of the front part of the conveyor is similar with the profile of the lower curved surface of the feed inlet.
  • the shape of said feed inlet is defined by two heat press plates.
  • the opposite surfaces of the heated press plates are curved surfaces.
  • the profiles of said curved surfaces consist of at least a curved line or a plurality of straight lines smoothly interconnected together.
  • the shape of the feed inlet is fixed at the entrance of the press, which is different from the prior art in which the shape of the feed inlet is adjusted according to the thickness of the panels to be pressed.
  • the start point of the conveyor front part on the feed inlet and the size of the press gap are obtained by comparing the detected thickness with a prestored thickness of the mats.
  • the amount of movement of the conveyor with respect to the feed inlet and the expansion amount of the cylinder are determined according to the thickness of the mats to be pressed.
  • the press plates with a high quality may be manufactured at a high speed.
  • the shape of the feed inlet is determined by the opposite curved surfaces of the upper and lower inlet sections, so the shape of the feed inlet keeps fixed.
  • the operation of pressing the mats with different thickness is performed by adjusting the length of the conveyor moving into the feed inlet without adjusting the shape of the feed inlet. That is to say, after the shape of inlet mouth is determined, the start position of the conveyor front part on the feed inlet of the press is adjusted so that the front part of the conveyor may reach the different points of the feed inlet, rather than adjusting the shape of the feed inlet during the press of the mats into different thickness.
  • the operating mode may remarkably simplify the structure of the press and save manufacturing cost.
  • the controller determines the pressure and the stroke of the cylinder.
  • a hydraulic system transfers a pressure medium to a control cylinder according to a signal of the controller so that the mats are pressed and different pressures are applied on different parts of the mats.
  • the shapes of the opposite surfaces at the inlet section of the feed inlet are fixed and the start point of the conveyor front part on the entrance is determined according to the different thickness of the mats.
  • the whole inlet sections or a part of the inlet sections are heated according to the different thickness of the plates. This is helpful to reduce the heat applied to the conveyor rubber belt and also to save energy and manufacture cost.
  • the front positions of the inlet sections are adjusted by the adjusting device connected with the front part of the press inlet sections. That is to say, the front positions of the inlet sections are moved along a direction perpendicular to a moving direction of the mats to be pressed by the adjusting device, so it is possible to finely adjust the shape of the front part of the feed inlet and fix the shape of the front part of the feed inlet.
  • an apparatus for performing the above mentioned method including a continuous press for continuously pressing mats and a conveyor belt for transporting the mats to be pressed into the continuous press.
  • the press also comprises a controller, which controls a front part of the conveyor belt following the shape of the curved surfaces of the lower inlet section and moving to a preset start point based on the thickness of the mats to be pressed, and a preset press gap is formed by controlling a control cylinder of the press according to the mats to be pressed.
  • the controller includes a computer control unit.
  • the conveyor has a drive unit for moving the conveyor with respect to the press and a guiding mechanism for guiding the conveyor following the curved surfaces of the lower inlet.
  • the control cylinders are hydraulically connected to the hydraulic controller.
  • the drive unit and the hydraulic controller are electrically connected with the controller.
  • a sensor for detecting the thickness of the mats to be pressed is provided on the front part of the conveyor belt, and said sensor is connected with the controller.
  • An upper and a lower press roller for adjusting the upper and the lower inlet section are provided on the front part of the press.
  • the upper and the lower press roller are mounted on support members for the press rollers. One end of the support member is hinged to the upper or the lower adjusting devices, and the other end is hinged to the cylinders.
  • the thickness of the upper and lower inlet sections turns gradually small from a longitudinal direction of the press towards the feed inlet of the press or shows a wave shape.
  • the curved surface is made up of one curved line or many straight lines smoothly interconnected together.
  • the apparatus for performing the invention includes a continuous press for continuously pressing the mats.
  • An inlet section of the press plates with curved surfaces is used at the feed inlet of the press. These curved surfaces at the inlet sections of the press plates are disposed oppositely, thus forming the shape of the feed inlet.
  • the shape of the feed inlet has different sections suitable for thin plates, medium plates and thick plates. One surface of these sections may be a curved surface. The curved surfaces on the different sections are smoothly transient. Thus, there are no inflexion points which prevent the mats from moving at the joints and the running steel belts will not suffer from wearing or impact.
  • an adjusting device for finely adjusting the steel strip around the feed inlet and the front part of the inlet section may be provided at the front part of the press.
  • the upper and the lower press rollers for adjusting the shape of the steel strip are provided in a front part of the adjusting device.
  • the cylinders corresponding to the curved surfaces at the entrance are used to exert the essential pressure on the mats.
  • the profile of the curved surfaces may be a complete curved line or several curved lines with different curvature radius connected with each other. Also it may consist of many straight lines. The length of the straight lines is chosen to ensure the surfaces consisting of these straight lines are smooth enough and this may reduce the difficulty in the manufacture. That is to say, the straight lines are short enough to assure that there are no inflexion points and the panels to be pressed can pass through smoothly.
  • FIGS. 1 to 3 show schematically the positions of the front part of the conveyor 24 with respect to the press feed inlet (an area E shown in FIG.4 ) during the pressing process.
  • the conveyor 24 is shown as a conveyor belt indicated by a dotted line for simplification.
  • the conveyor belt is supported by a roller, and the position of the roller adjacent to the feed inlet E of the press is movable.
  • FIG.1 shows the situation for pressing medium plates.
  • the front part of the conveyor 24 leans against the point A of the feed inlet E.
  • the point A is the start point of the front part of the conveyor 24 for pressing the medium panels.
  • FIG. 2 and FIG. 3 show the situations for pressing thin and thick plates.
  • the point A is the start point of the front part of the conveyor 24 for pressing thin and thick panels.
  • the thickness of the mats on the conveyor 24 is detected by a sensor or similar devices. As shown in FIG.1 , a mat for pressing the medium plate is on the conveyor 24. The detected thickness values are then transformed into electrical signals and the signals are sent into the controller. The controller compares the detected thickness of the mat with a prestored thickness of the mat, thus, the thickness of the mats suitable for the pressing finished plates on the conveyor is determined.
  • controller After obtaining the thickness of the finished boards, controller concludes the corresponding start point of the conveyor front part on the feed inlet E and the size of the press gap. Then a controller sends a starting signal to the drive device of the conveyor 24 to move the front part of the conveyor 24 to the start point on the feed inlet E. In the meantime, the controller controls the control cylinder through a hydraulic system of the press thus forming a press gap corresponding to the detected thickness of the panels.
  • FIG.1 shows the situation of pressing thin boards.
  • the front part of the conveyor 24 extends a longer length into the press feed inlet E during pressing a thin plate. By this time, the front part of the conveyor 24 almost reaches a position where curved surfaces I and II are connected with each other. As shown in FIGS. 4 and 5 , the length of the conveyor 24 extending into the feed inlet E is gradually reduced as the thickness of the mats to be pressed increases.
  • the length of the conveyor 24 entering the feed inlet corresponds to the thickness of the mats to be pressed.
  • the correspondence between them is prestored in the computer of the controller.
  • the length of the conveyor 24 entering the feed inlet E actually determines the start point of the conveyor 24 with respect to the feed inlet E. From the start point, the transported mats are transported to the feed inlet E from the conveyor 24. The position of the start point is changed according to the thickness of the mats to be pressed. In the process of pressing the mats, after the thickness of the mats is detected, the detected thickness of the mats is compared with a preset thickness of a predetermined mat to determine the start point of the conveyor with respect to the feed inlet E with a fixed curved surface and a press gap between upper and lower heated press plates.
  • the apparatus comprises a continuous press for continuously pressing mats and a conveyor 24 matched with the continuous press.
  • the front part of said conveyor 24 is disposed at the feed inlet E of the press and the conveyor locates different positions according to the different thickness of the mats to be pressed.
  • the front part of the conveyor 24 is moved following the shape of the curved surfaces on the lower inlet section 17 of the feed inlet E by a supporting member and a guiding mechanism.
  • the movement following the shape of the curved surfaces at the lower inlet section 17 means that the running track of the front part of the conveyor 24 tallies with the shape of the curved surface at the lower inlet section 17. It guarantees that the front part of the conveyor 24 always moves following the waves of the lower inlet section 17.
  • the continuous press of the invention for continuously pressing mats includes press frames 8, which are arranged along the longitudinal direction of the press at regular intervals.
  • the upper and lower heated press plates 1, 2 are provided on the press frames 8.
  • the upper and lower heated press plates 1, 2 comprise inlet sections 16, 17 and main heated press plates 18, 19, respectively.
  • the main heated press plates 18, 19 are rectangular plates with rectangular cross sections. That is to say, the upper and lower surfaces of the cross sections of the main heated press plates are parallel to each other.
  • the rectangular plates are connected together end to end in the press and lengthwise arranged along the press.
  • the inlet sections 16, 17 of said upper and lower heated press plates 1, 2 are mounted on the side of the inlet sections of the press with their curved surfaces arranged oppositely, thus forming the feed inlet E.
  • Stainless-steel belts 15 circularly running are provided on the opposite surfaces of the upper and lower heated press plates 1, 2.
  • the belts 15 are endless and may circularly rotate around the heated press plates 1, 2.
  • Arrays of rollers 20 are disposed between the belts 15 and the heated press plates 1, 2.
  • upper and lower adjusting devices 9, 10 for the feed inlet E are mounted on the front part of the press.
  • the upper and lower press rollers 13, 14 are articulately mounted on the front part of the upper and lower adjusting devices 9, 10 for the feed inlet E.
  • the adjusting devices 9, 10 for the upper and lower feed inlet E stretch or retract in an opposite direction or in a direction away from each other along a direction approximately perpendicular to the working direction. The extent of the expansion and contraction is small, so only the front part of the inlet sections 16, 17 at the feed inlet E is adjusted. Thus, a fine adjustment is performed on the feed inlet E.
  • the adjustment may be used for fixing the shape formed by the belts 15 in front of the feed inlet and apply a pressure to the belts 15.
  • upper and lower press rollers 13, 14 are rotatably mounted on the respective roller supporting member 25, 26.
  • One end of the control cylinders 22, 23 is hinged to the upper or the lower roller supporting members 25, 26, and the other end is hinged to the upper or lower controlling devices 9, 10.
  • supporting member 25, 26 connected to the cylinders relatively swing to put the upper and the lower press roller 13, 14 in motion.
  • the press rollers 13, 14 are operated such that the circular running steel belts 15 move in an opposite direction or in a direction away from each other, thus a shape of the belts 15 before the feed inlet E is finely adjusted.
  • Control cylinders 3, 4, 6 and 7 for applying a pressure necessary for manufacturing the plates to the upper and the lower heated press plates 1, 2 are provided on the press frames 8.
  • the control cylinders 3, 6 and 4, 7 are arranged at intervals and in rows. There are two or more in each row.
  • the upper of control cylinders 4,7 is connected to the lower heated press plate 2 through beams 21 to drive the lower heated press plates and apply a pressure to the lower heated press plates.
  • FIG.1 two rows of control cylinders 4, 7 for the inlet section 17 of the lower heated press plate 2 are provided.
  • a plurality of rows of control cylinders could be arranged according to the different length of the inlet sections 17.
  • one surface of the upper and the lower inlet sections 16, 17 is a curved surface, and the other surface is a plane which also keeps flat in the pressing process, hence the control cylinders 3,4,6,7 are connected with the upper and lower inlet sections 16, 17 vertically.
  • the connection between the control cylinders 3, 6 and 4, 7 and the upper and lower inlet sections 16, 17 is simplified.
  • the advantage of the invention different from the prior art is that spherical joints or universal joints are not necessary for the connections between the cylinder 3, 6 and 4, 7 and the upper and the lower inlet plates 16, 17 of the heated press plates.
  • the feed inlet E is formed by the curved surfaces of the upper and lower inlet sections 16, 17, and a pressure applied by the control cylinder 3, 6 and 4, 7 is received by the other surface.
  • the surface receiving the pressure is a substantially flat surface, so the control cylinder 3, 6 and 4, 7 may be directly connected to the flat surface and also may directly exert a pressure on said surface.
  • This design advantageously prevents oblique pressure from being applied on the heated press plates, so it completely eliminates components of forces in other directions except the vertical direction. It simplifies the structure of the press, extends the service life and improves operational reliability.
  • control cylinders 4, 7 are hinged to the moveable horizontal beams 21. In the pressing process, the control cylinders 4, 7 vertically apply the pressure on the horizontal beams 21.
  • FIG.5 in the embodiment of the invention, the opposite surfaces of inlet sections 16, 17 are continuous and smoothly curved surfaces.
  • FIG.2 indicates a cross section of the upper and lower inlet sections 16, 17.
  • the curved surface of the upper and the lower inlet sections 16, 17 consists of a complete curve line. That is to say, the curved surface from the left side to the right side in the drawing consists of a complete curved line.
  • the shape of any cross section in the width of the upper and the lower inlet sections 16, 17 is similar. So, according to the invention, on each cross section of the upper or the lower inlet sections 16, 17, the curved surface indicates a smooth curve.
  • the curve is a complete curve line or formed of a plurality of curve lines, for example three curve lines (such as for relatively thick plates, medium plates and thin plates).
  • these curved surfaces may be formed by connecting these line segments with suitable length.
  • the length of the lines segments are arranged such that the curved surface is smooth and flat and will not damage the panel surface. The greatest advantage is to simplify the manufacture difficulty and reduce cost.
  • the opposite surfaces are curved surfaces, hence seen from the left to the right in FIG.2 , the feed inlet made up of the upper and the lower inlet sections 16, 17 is trumpet-shaped which shows a bigger left side and a smaller right side in the drawings.
  • the thickness of the upper and lower inlet sections 16, 17 turn gradually large from the left side to the right side.
  • the curved surfaces may also be designed wave-shaped (not shown in the drawings).
  • the curved surfaces of the upper and the lower inlet sections 16, 17 may be shaped so that the middle is depressed to the inlet sections and two sides are protruded. It is helpful to discharge the air from the mats.
  • the curved surface of the inlet sections 16, 17 may include a plurality of curves. These lines are connected together smoothly. That is to say, there are no protrusions or sudden changes in the connections of the two curved surfaces which makes sure that the surfaces are smoothly curved.
  • the curved surface may be made of three curve lines with different curvatures. Each curve line corresponds to the areas I, II, III in FIG. 1 , respectively. These curved lines correspond to thick pressed mats, medium pressed mats and thin pressed mats, respectively.
  • the curved surfaces may consist of many shorter line segments. This contributes to the easy manufacture. Those lines are also connected together smoothly to form even curved surfaces, i.e. smoothly curved surfaces are formed on the upper and the lower inlet sections 16, 17. And, the curved surface should ensure that the surface of the pressed finished panels has no concave/convex parts not according with the requirement.
  • the lengths of straight lines are selected to meet the requirement for simplifying manufacture and assuring the finished panels quality.
  • the upper and lower inlet sections 16, 17 are divided into three parts, i.e. curved section III for thick boards, curved section II for medium boards, and curved section I for thin boards.
  • the three curve lines forming the three curved surface sections have different curvatures and these lines are connected smoothly end to end.
  • each curved surface may be different based on different mats to be pressed.
  • the curved surface section II for medium boards on the inlet section 16 or 17 is depressed upwards or downwards rather than being protruded in the opposite direction.
  • each curved surface section may be depressed upwards or downwards or be protruded out as needed.
  • each curve is made up of smooth curved lines. In practice, several short straight lines may substitute curved lines. This may simplify the difficulty in the manufacturing process and there is no adverse effect on the finished boards.
  • FIG. 5 there are three groups of channels through which the heated oil may pass corresponding to curve section I, II, III on the upper and the lower inlet sections 16, 17.
  • the channels are independent and do not communicate with each other.
  • the heated oil is controlled to pass through different curved surfaces I, II, III according to the different working conditions in the pressing process, so that different curved surface sections I, II, III are heated independently.
  • the curved surface section III is heated and the other segments are not heated. This may reduce the heating applied on the adhesive tape of the conveyor entering the inlet sections and save energy.
  • the curved surface section II for medium board is lengthened, so it benefits to process medium boards.
  • other sections could be lengthened to press different boards.
  • the length of upper inlet sections 16 is shorter than that of the lower inlet sections 17.
  • the connection between the upper and lower inlet sections 16, 17 and main heated press plates 1, 2 are staggered to prevent defects (such as a protrusion) on the connection on the pressed mats from being formed.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Metal Rolling (AREA)
  • Press Drives And Press Lines (AREA)

Claims (9)

  1. Verfahren zum Pressen einer Matte mit einer kontinuierlichen Doppelbandpresse, umfassend:
    Erfassen der Dicke der Matte auf einem Förderband (24);
    Vergleichen der erfassten Dicke der Matte mit einer vorbestimmten Dicke der Matte zur Bestimmung eines Anfangspunktes (A) des Förderbandes (24) bezüglich einer Eingangsöffnung (E) der Presse;
    Ansteuern einer Antriebsvorrichtung des Förderbandes (24) durch einen Controller, um das Förderband (24) so zu bewegen, dass ein Vorderteil des Förderbandes (24) den Anfangspunkt (A) erreicht; und
    Einstellen eines Pressspalts (S) zwischen einer beheizten oberen und
    unteren Pressplatte (1, 2) auf einen vorbestimmten Wert durch Ansteuern von Steuerzylindern (3, 4, 6, 7);
    dadurch gekennzeichnet, dass
    die Eingangsöffnung (E) die obere und untere Pressplatte (1, 2) umfasst,
    die eine feste gekrümmte Oberflächenform aufweisen und zwischen sich den Pressspalt (S) definieren, und dass
    das Förderband (24) so bewegt wird, dass der Anfangspunkt (A) des Förderbandes (24) sich in dem Pressspalt (S) zwischen der oberen und
    unteren Pressplatte (1, 2) befindet, und die Länge des in die Eingangsöffnung (E) hineinragenden Teils des Förderbandes (24) mit der Dicke der zu pressenden Matte korreliert, derart, dass die Länge des in die Eingangsöffnung (E) hineinragenden Teils des Förderbandes (24) sich graduell verringert, wenn die Dicke der zu pressenden Matte zunimmt.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass ein Controller eine vordere Position der Eingangsöffnung (E) auf Basis der erfassten Dicke der Matte einstellt.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass während des Pressvorgangs an der Eingangsöffnung (E) der Druck aus einer Richtung oder aus zwei Richtungen in einer Richtung senkrecht zu einer Bewegungsrichtung der Matte aufgebracht wird.
  4. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass eine an die Eingangsöffnung (E) anschließende untere gekrümmte Fläche das Vorderteil des Förderbandes (24) führt.
  5. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Form der Eingangsöffnung (E) von den beheizten Pressplatten (1, 2) bestimmt ist und gegenüberliegende Flächen der beheizten Pressplatten (1, 2) als gekrümmte Flächen ausgebildet sind, die sich allmählich verjüngen oder sich in Form einer Welle entlang der Eingangsöffnung (E) der Presse ändern, wobei die gekrümmte Fläche aus einer gekrümmten Linie oder aus mehreren miteinander verbundenen geraden Linien besteht.
  6. Verfahren nach einem vorangehenden Ansprüche, dadurch gekennzeichnet, dass die ganze Eingangsöffnung (E) oder ein Teil der Eingangsöffnung (E) gemäß der erfassten Dicke der zu pressenden Matte erhitzt wird.
  7. Vorrichtung zum Durchführen des Verfahrens nach einem der Ansprüche 1 bis 6, mit:
    einer kontinuierlichen Doppelbandpresse zum kontinuierlichen Pressen von Matten, die eine obere und eine untere Pressplatte (1, 2) aufweist,
    zwischen denen ein Pressspalt (S) durch Ansteuern von Steuerzylindern (3, 4, 6, 7) entsprechend der zu pressenden Matte gebildet wird;
    einem Förderband (24) zum Fördern der zu pressenden Matte in die Presse;
    einem Sensor zum Erfassen der Dicke der zu pressenden Matte, der an dem Vorderteil des Förderbandes (24) angeordnet ist; und
    einem Controller, der mit dem Sensor verbunden ist und auf Basis der Dicke der zu pressenden Matte die Bewegung des Vorderteils des Förderbandes (24) zu einem vorbestimmten Anfangspunkt (A) steuert,
    dadurch gekennzeichnet, dass
    die obere und untere Pressplatte (1, 2) eine feste gekrümmte Oberflächenform aufweisen, und dass
    das Vorderteil des Förderbandes (24) so bewegt werden kann, dass der Anfangspunkt (A) des Förderbandes (24) sich in dem Pressspalt (S) zwischen der oberen und unteren Pressplatte (1,2) befindet, und die Länge des in die Eingangsöffnung (E) hineinragenden Teils des Förderbandes (24) mit der Dicke der zu pressenden Matte korreliert, derart, dass die Länge des in die Eingangsöffnung (E) hineinragenden Teils des Förderbandes (24) sich graduell verringert, wenn die Dicke der zu pressenden Matte zunimmt.
  8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass der Controller eine Computersteuereinheit umfasst, und dass das Förderband (24) eine Antriebseinheit zum Bewegen des Förderbandes (24) bezüglich der Presse und, anschließend an die gekrümmte Fläche des unteren Eingangsabschnitts, eine Führungsvorrichtung aufweist, die das Förderband (24) führt, wobei die Steuerzylinder (3, 4, 6, 7) hydraulisch mit einem hydraulischen Controller verbunden sind, und die Antriebseinheit und der hydraulische Controller elektrisch mit dem Controller verbunden sind.
  9. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass eine obere und untere Presswalze (13, 14) zum Einstellen von Stahlbändern (15) an dem Vorderteil der Presse angeordnet sind, und dass die obere und untere Presswalze (13, 14) an Tragelementen (25, 26) für die Presswalzen angebracht sind, wobei ein Ende der Tragelemente (25, 26) mit einer oberen oder unteren Einstellvorrichtung (9, 10) gelenkig verbunden ist, und das andere Ende mit einem Steuerzylinder (22, 23) gelenkig verbunden ist, wobei die Dicke des oberen und unteren Eingangsabschnitts (16, 17) in der Eingangsöffnung (E) der Presse sich entlang einer Längsrichtung der Presse graduell verringert oder eine Wellenform zeigt, und wobei die gekrümmte Fläche aus einer gekrümmten Linie oder aus mehreren miteinander verbundenen geraden Linien besteht.
EP20100157362 2009-03-23 2010-03-23 Procédé pour le pressage de tapis au moyen d'une machine de pressage en continu et appareil pour réaliser le procédé Not-in-force EP2233261B1 (de)

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CN2009101196013A CN101508128B (zh) 2009-03-23 2009-03-23 利用连续压机压制压制品的方法和用于实施该方法的设备

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CN102152374A (zh) * 2010-12-22 2011-08-17 中国福马机械集团有限公司 用于连续压机的滚杆链导入装置
FR3032903B1 (fr) * 2015-02-23 2017-07-21 Neolife Procede de fabrication d’un materiau de type bois reconstitue
DE102017110875B4 (de) * 2017-05-18 2020-07-16 Siempelkamp Maschinen- Und Anlagenbau Gmbh Verfahren zum Verpressen einer Pressgutmatte
CN107553667B (zh) * 2017-09-14 2020-11-27 南京林业大学 一种木材表面炭化装置
CN109203130B (zh) * 2018-11-05 2023-10-03 万华生态板业股份有限公司 一种热压机系统及板材加工系统
DE102020000570A1 (de) * 2020-01-29 2021-07-29 Siempelkamp Maschinen- Und Anlagenbau Gmbh Verfahren zur Überwachung eines Stahlbandes in einer kontinuierlichen Presse und kontinuierliche Presse

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Publication number Priority date Publication date Assignee Title
CH552462A (de) * 1971-07-14 1974-08-15 Mets Nv Konstruktiewerkhuizen Kontinuierlich arbeitende presse zum herstellen von platten, wie span- oder faser-platten.
DE3725383C1 (de) * 1987-07-31 1988-12-01 Siempelkamp Gmbh & Co Anlage fuer das Heisspressen von Pressgutmatten bei der Herstellung von Spanplatten,Faserplatten u.dgl.
DE4301594C2 (de) * 1993-01-21 2002-10-31 Dieffenbacher Gmbh Maschf Verfahren und Anlage zur Herstellung von Spanplatten
EP0901894B1 (de) * 1997-09-13 2004-11-24 Siempelkamp Maschinen- und Anlagenbau GmbH & Co.KG Verfahren und Presse zum Verpressen, insbes. kontinuierlichen Verpressen
DE19828824C2 (de) * 1998-06-27 2000-07-27 Siempelkamp Gmbh & Co Verfahren und Presse zum kontinuierlichen Betrieb im Zuge der Herstellung von Spanplatten, Laminatplatten o. dgl.
DE10045681B4 (de) * 2000-09-15 2007-06-14 Dieffenbacher Gmbh + Co. Kg Kontinuierlich arbeitende Presse
DE10214322B4 (de) * 2002-03-28 2016-07-14 Siempelkamp Maschinen- Und Anlagenbau Gmbh Kontinuierliche Presse zum Verpressen von Pressgutmatten zu Pressgutplatten
DE10261730A1 (de) * 2002-12-30 2004-07-08 Dieffenbacher Gmbh + Co. Kg Verfahren mit Anlage und kontinuierlich arbeitende Presse zur Herstellung von Holzwerkstoffplatten
DE102006059564B4 (de) * 2006-12-16 2009-06-18 Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg Verfahren und Vorrichtung zum Verpressen von Pressgutmatten
DE102007021200B4 (de) * 2007-05-05 2019-08-14 Dieffenbacher GmbH Maschinen- und Anlagenbau Verfahren zur Verdichtung einer Pressgutmatte im Zuge der Herstellung von Werkstoffplatten und eine kontinuierlich arbeitende Presse

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CN101508128A (zh) 2009-08-19
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