EP1615757B1 - Presse et procede de production de panneaux - Google Patents

Presse et procede de production de panneaux Download PDF

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Publication number
EP1615757B1
EP1615757B1 EP03720569.7A EP03720569A EP1615757B1 EP 1615757 B1 EP1615757 B1 EP 1615757B1 EP 03720569 A EP03720569 A EP 03720569A EP 1615757 B1 EP1615757 B1 EP 1615757B1
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EP
European Patent Office
Prior art keywords
press
belt
pressure
roller
chip
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
Application number
EP03720569.7A
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German (de)
English (en)
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EP1615757A2 (fr
Inventor
Josef Stutz
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.)
Lignum Technologies AG
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Kronoplus Technical AG
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Publication date
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Publication of EP1615757A2 publication Critical patent/EP1615757A2/fr
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Publication of EP1615757B1 publication Critical patent/EP1615757B1/fr
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    • 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
    • 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
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0082—Dust eliminating means; Mould or press ram cleaning means

Definitions

  • the invention relates to a pressing device according to claim 1 for the pressing of glued chips and fibers in particular for the production of substantially wood components consisting of plates, and a method according to claim 25 for the production of such plates.
  • the invention relates to a device for the continuous production of particleboard or fiberboard with a press drum and a pressure roller to produce a desired density of the chipboard or fiberboard and with a rotating press belt, especially steel strip, through which the chipboard or fiberboard against the surface of the press drum can be pressed, wherein a cleaning device of the device is applied substantially over the entire width of the press belt against this.
  • the invention further relates to a device or working method for the continuous production of particleboard or fiberboard, in which provided with a binder chip or fiber web to produce a desired density between a press drum and a pressure roller line pressure and in addition between a rotating belt and the press drum is applied a surface pressure.
  • Such a pressing device is basically constructed as follows. To a mat layered chip and / or fiber material, which may be in particular precompressed, is brought between rollers. Such a mat is also referred to as fiber fleece or chip or fiber web.
  • a circulating belt or press belt, in particular a steel belt, can be tensioned by rollers.
  • the chip material is placed between a steel strip or two steel strips. Temperature is supplied during the pressing. The resin hardens while doing so.
  • the final product is in the form of a chipboard, fiber HDF or MDF board.
  • the pressing device comprises a total of four rollers and around a pair of rollers, a steel band is guided around. Initially, two rollers have a certain distance from each other.
  • the bands are funnel-shaped in the direction of heating plates together. The actual compression takes place at the heating plates. Through the funnel shape, the supplied material is continuously compressed, temperature is gradually supplied. The funnel shape causes the material to get into the press and not build up in front of the press.
  • a disadvantage of such a press is therefore relatively long.
  • the funnel needs about 3 meters of space.
  • the temperature is gradually supplied. This also has the consequence that the required parking space for such a pressing device is relatively large and that results in relatively long pressing times.
  • press times are typically 6-8 seconds per millimeter plate thickness.
  • a press is provided in a further embodiment, to bring the material obliquely coming from above into the press. By this measure, it succeeds to immediately compress the material suddenly, without damaging the material in front of the press. Due to the sudden compression, the funnel-shaped feed can be omitted. This saves space and pressing time. It is possible to approximately halve the pressing time per millimeter plate thickness.
  • the steel bands When pressing, the steel bands can get bumps.
  • the bumps affect the quality of the later product. If two steel strips are used for pressing, the risk of dents and negative influences on the product is doubled accordingly.
  • a heating drum which is also called press drum or calender
  • a heating drum Around this heating drum around three quarters is led a steel band. About a quarter of the heating drum remains free, from this side, the material is fed diagonally.
  • the steel heating drum is insensitive to dents. In this way it is possible to halve damage to the product by buckling in the steel strip,
  • a main roll serving as a press drum may be provided, which has a particularly large diameter. Around this main roll around the press belt is led to three quarters. Several smaller pressure rollers are grouped around the main roller. Between the pressure rollers and the main roller, the press belt is guided through. The pressure rollers press in the direction of the main roller,
  • the main roll and the pressure rollers are heated. Temperatures of up to 250 ° C are typically generated. The higher the temperature is selected, the faster the glue binds.
  • a high rotational speed of the press belt or the associated small rollers and the main roller is provided.
  • a device or a working method of the type mentioned is for example by the DE-OS 20 50 325 known.
  • a continuous press is disclosed, are pressed on the chipboard or fiberboard continuously and then cut to length.
  • the webs have a thickness of 0.8 to 12 mm and a width of 2500 mm.
  • the pressing of the chipboard or fiberboard takes place between the circumference of the rotating and heated press drum and the standing under a high tension circulating steel strip.
  • the invention is therefore based on the object to provide a device or a method of the generic type, soft or which avoids the aforementioned disadvantages of the generic prior art:
  • the invention is also based on the object, an apparatus for the continuous production of particleboard or fiberboard of the type mentioned in such a way that their operation is improved by a significantly increased cleaning performance.
  • an apparatus for the continuous production of particleboard or fiberboard of the type mentioned in such a way that their operation is improved by a significantly increased cleaning performance.
  • An object of the invention is the acceleration of the production process at a relatively small pitch, which is to be exempted for the press. Overall, therefore, production costs should be reduced.
  • the invention is also based on the object, a device or to provide a working method for the continuous production of chip or fiber webs in such a way with the one over long lengths Consistent material thickness can be realized at a desired density with little effort.
  • the method should also be feasible with such per se known continuous presses, which have a uniform over the width of the chip or fiber web adjustment of the gap dimension,
  • a device in which the cleaning device is arranged on a carrier web which can be driven circumferentially by means of a drive essentially transversely to the direction of movement of the press belt.
  • the cleaning performance of the cleaning device is substantially increased by this moves transversely to the direction of movement and therefore a significantly higher relative speed of movement is realized.
  • the cleaning device is arranged on a revolving press belt and thus enables continuous cleaning, wherein the circulating speed can also be determined, for example, in accordance with the feed movement of the press belt to be cleaned.
  • the holding means in which this is arranged, for example reversie-rend or on a rotating brush roller, uniform cleaning performance over the entire width of the press belt are realized in the circulating driven cleaning device.
  • the cleaning device and the carrier web can for this purpose also be integrally connected to one another,
  • a particularly advantageous embodiment of the present invention is also realized in that the carrier web to a holding means of the device in different positions can be fixed, thereby, the cleaning device having. Carrier web can be adjusted according to the respective set position of the press belt and the respective operating conditions.
  • the carrier web is arranged to adapt to the relative position and / or orientation of the press belt with at least two degrees of freedom on a holding means adjustable, This makes it possible in a simple manner to ensure a flat support of the cleaning device on the press belt ,
  • the carrier web is moved, for example, in the direction of the press belt and additionally inclined about its longitudinal axis until the desired flat contact is ensured.
  • Another particularly practical embodiment of the method according to the invention is achieved when the carrier web is moved by means of a hydraulic or pneumatic cylinder, so as to allow a continuous adjustment of the carrier web including the drive.
  • the adaptation of the optimal relative position between the Cleaning device and the press belt could be realized by a mechanical connection between the adjustable pressure roller and a storage of the carrier web.
  • a modification in which the device has a sensor for detecting the relative position and / or orientation of the press belt is particularly promising. As a result, even very small deviations of the press belt can be detected by the respective position and inclination and a corresponding compensating movement can be initiated immediately.
  • the cleaning device can be moved independently of the pressure roller.
  • the device has a sensor for determining the pressing force of the cleaning device relative to the press belt, so as to be able to set a suitable for the maintenance of an optimal cleaning pressure of the cleaning device against the press belt.
  • the device is additionally equipped with a second sensor, wherein in each case one sensor is assigned to one of the two edge regions of the press belt.
  • the cleaning device could comprise a woven fabric, a knitted fabric, a foam or a textile or fibrous surface.
  • a particularly suitable for the cleaning of such bands a variant has been found in which the cleaning device has a brush and also after a ireren advantageous modification a wear indicator so as to make timely before an impermissible restriction of cleaning performance replacement of wearing parts can.
  • an object of the invention is also initially achieved in that a pre-compressed mat is guided obliquely from above into the press.
  • the press belt is heated not only by the aforementioned smaller rollers. Additionally or alternatively, according to the invention, temperature is also supplied to the press belt outside the area directly involved in the pressing step. In this way, it is possible to supply a reheated belt to the area that serves the actual pressing. Since the press belt has already been heated, the press belt can be brought to the desired temperature more quickly in the press area. Therefore, it is possible to increase the circulation speed without having to provide such a heating capacity in the pressure rollers, which leads to the damage of the device.
  • Temperature can thus be supplied to the press belt by thermal radiation so by radiators, which are placed near the press belt outside the actual pressing area.
  • the device in one embodiment, there are not only the abovementioned pressure rollers which bear against the main roller under pressure.
  • the tensioning roller By corresponding displacement of the tensioning roller, it is possible to tension the press belt.
  • the pressing pressure is adjusted, with which the pre-compressed mat is pressed within the press.
  • the temperature is also supplied via the tension roller. In this way, it is possible to supply a reheated belt to the area that serves the actual pressing. Since the press belt has already been heated, the press belt can be brought to the desired temperature more quickly in the press area. Therefore, it is possible to increase the circulation speed without having to provide such a heating capacity in the pressure rollers, which leads to the damage of the device.
  • the diameter of the pressure rollers are further increased compared to the prior art. This increases the contact area between the press belt and the respective pressure roller concerned.
  • the larger contact surface allows improved and thus faster energy supply.
  • the energy transmitted per unit area decreases, which can lead to local overheating despite insufficient energy transfer to harden. This further measure also ensures that the desired temperature in the pressing area is made available at further increased rotational speeds.
  • the smaller pressure rollers have a diameter of up to 2 meters.
  • one or more pressure rollers are now used which have a diameter above 2 meters, preferably above 2.5 meters.
  • the steel strip is guided around smaller rolls or pressure rolls.
  • the smaller a smaller roll in diameter the stronger the steel strip is bent. The more it is bent, the more it is strained. As a result, the service life of the steel strip are reduced accordingly.
  • This size also applies to the tension roller, if the tension band moves around a stress-inducing circular section around the tension roller, z. B. more than 45 °.
  • the steel strip as a whole is uniformly brought to a desired temperature. Temperature gradients within the steel strip are kept small compared to the prior art. The avoidance of large temperature gradients has the consequence that the service life of the Steel strip is increased accordingly. Compared to the prior art, therefore, care is taken in the invention to increase the service life of the steel strip by a more uniform heating. Production costs are also reduced as the steel strip is very expensive.
  • a steel strip can cost up to 1 million euros.
  • a comparatively short steel strip can be used.
  • the deployment costs are significantly reduced accordingly. Thus further production costs are saved.
  • the rolls are heated as follows. Holes are provided near the surface of the cylindrical roll. The holes point at the ends of an inlet and a drain on. The feed takes place from one end face of the roll. The process takes place via the other end surface of the roller. Hot liquid, in particular a hot oil, is passed through the holes through the axes. As a result, the respectively affected lateral surface is heated accordingly. As a result of the process, the hot liquid, ie, in one embodiment, the hot oil leaves the roll and is recirculated. During the tour in the circuit, the oil is heated outside the roller. Preferably, the oil is heated by a combustion process. In this way, wood dusts can be used to heat the rolls, which fall off during the production of the fibers and / or shavings. Wood dust can therefore be used for heating. The waste product wood dust is used directly for the production process. Transport routes for fuel are reduced accordingly.
  • the main roll can be heated in the aforementioned manner.
  • a contact pressure of the pressure rollers to the main roll of more than 8000 N per centimeter in the axial direction of the main roll, preferably of more than 10,000 N per centimeter is provided.
  • the pressure roller further downstream very small rollers, which advantageously reduce the gap increasingly.
  • Typical diameters of the very small rolls smaller than the first aforementioned nip rolls are 300-450 mm. In an advantageous embodiment of the invention it has been found that these press very small rolls with a contact pressure of at least 150 N per centimeter in the axial direction against the main roll.
  • the density distribution in the surface area of the plates to be produced is substantially improved.
  • a jagged or wave-like course in the density distribution in the surface area is thus avoided.
  • the result is a plate which has a particularly high density in the surface area. The density decreases towards the center of the plate. In the surface area, in contrast to a press without the very small rollers, a jagged density curve is avoided.
  • the desired high surface density which is provided in particular by the sudden compression, is desired.
  • the need for lacquer is reduced in a subsequent lacquering step of the surface.
  • the paint can then not penetrate into the product, which would increase the consumption of paint accordingly.
  • about 20-30% of the paint is saved in a subsequent painting step.
  • the hard surface is critical to wear resistance and the prevention of dents in use.
  • a soft core improves impact sound absorption.
  • the very small rollers are immediately adjacent to the first pressure roller over which the material is fed obliquely. Several smaller rolls are used. In one embodiment, at least two very small rollers are provided which avoid the spring mat being deflected within the pressing area.
  • At least four very small rolls are used.
  • the tension with which the tensioning roller tensions the press belt is at least 25 N per cm 2 .
  • the clamping force is 30 N per cm 2 and more.
  • the very small rolls are followed by very small rolls, so-called trimming rolls. These other very small rolls are preferably in the upper region near the point where the plate leaves the press. These other very small rolls have hydraulic cylinders inside.
  • the hydraulic cylinders inside the other very small rollers which are arranged in the upper area, the surface of the very small rollers or, the lateral surface can be deformed. Individually, the surface areas or the lateral surface along the axis can be adjusted.
  • the pressure in the upper region can be adjusted so that the desired plate thickness in this region can be adjusted in a targeted manner. It is thus possible to further reduce deviations from the desired plate thickness. A subsequent grinding step can be correspondingly avoided or even completely saved in order to achieve the ideal desired plate thickness.
  • an electronic control to push the smaller rolls parallel to the main roll.
  • the axes of a smaller roll are moved hydraulically towards the main roll.
  • Each hydraulic element to the right and left of the roller can be individually controlled and moved.
  • the at least two hydraulic elements are moved to the right and left of a smaller roller in such a way that a smaller roller is guided absolutely parallel to the main roller.
  • the in particular pre-compressed mat is guided by means of a belt to the area from which the pre-compressed mat is guided obliquely from above into the press.
  • a relatively large entrance slit, d. H. Gap adjusted at the beginning of a continuous compression of a particular pre-compressed mat.
  • one or more smaller rollers have not been adjusted with the actual contact pressure in the direction of the main roller. Only when a pre-compressed mat leaves the pressing device again, the desired final pressure is set with the press the smaller rollers in the direction of the main roller. In this way, it is possible to reduce the required starting power.
  • the pressing device can therefore be designed with lower starting performance. This reduces the cost of the pressing device. Overall, the production costs will be further reduced.
  • the device In order to monitor the production, the device includes a sheath having various viewing windows. Through the viewing windows, the production inside the press can be manually monitored. Through the aforementioned holes in the sheath further internal cleaning can be made.
  • a so-called transfer table is located in front of the entry area into the press.
  • the pre-compacted mat is brought to the transfer table by means of a conveyor belt.
  • the transfer bridges the distance between the actual feed into the press and the assembly line. This way will. the proper supply of the pre-compressed mat further ensured.
  • means for heating the transfer table are provided.
  • the pre-compressed mat is already pre-heated in the pressing device immediately before entry. Due to the additional supply of temperature immediately before the entry of the pressing device, it is further possible to shorten the pressing time. Overall, this will further increase production output.
  • the transfer table is designed so that hot steam can be supplied to the pre-compressed mat.
  • the pre-compressed mat is further suitably heated.
  • the temperature is transported very quickly into the interior of the mat. As a result, the production is further improved suitable.
  • means are provided above the transfer table to heat the pre-compressed mat from above and / or supply steam from above.
  • the mat is heated from both sides immediately before entry into the pressing device or heat into the interior of the mat through the steam pulse into it.
  • the production output can be increased further.
  • a polishing device is provided with which the main roll can be polled during production.
  • Belde aforementioned preparation facilities, so the Bürst adopted and the bollard can be moved in an oscillating parallel to the mantle surface. In this way, a uniform treatment result is ensured.
  • means are provided to bring the treatment facilities, so the polishing device and the Bürst noticed to the main roller or drive away again from the main roller.
  • the polishing device is approached only when needed.
  • the polisher grinds the main roll when needed. It is preferably a roller with a grinding belt. By means of the abrasive belt, the surface of the main roll is ground if necessary.
  • the surface of the polishing device preferably has very fine-grained corundum material.
  • the polishing device is turned on when shading is registered on the surface of the main roller. This can be done by optical Sensors happen. In practice, however, it is also possible for one person to monitor the quality of the surface of the main roll. The person manually initiates the turning on of the polisher when shading is registered in the surface.
  • the bollard device is switched on according to the method.
  • one or more brushes are provided which brush off the press belt. This further ensures the production quality. Deposits on the press belt can not affect the product quality.
  • a so-called band brush is used.
  • This is a circulating belt, which is spanned by two rollers.
  • the band is externally provided with steel bristles. These are guided perpendicular to the direction along which the press belt is guided. So deposits are swept sideways on the press belt. The product quality is ensured accordingly.
  • the Bürst drivingen are arranged movable.
  • the method it is possible to provide a desired distance between a Bürst issued and the press belt. This method is particularly necessary when new plate thicknesses to be produced are set. In this case, the distance between a smaller roller and the main roller is appropriately changed. As a result, the course of the press belt changes slightly. The possibility of tracking ensures an optimal brushing result.
  • a polishing device is provided with which the press belt can be polished.
  • This polishing device for the press belt can also be driven zoom only when needed to the press belt. It is then switched on when the product quality deteriorates and polishing the main roll does not lead to a sufficient product improvement.
  • a working method in which initially set a desired gap between the press drum and the pressure roller and then the raw density determining line pressure is adjusted by changing the supply of material of the chip or fiber web.
  • a uniform material thickness can be ensured over a large length of the chip or fiber webs.
  • the material supply is varied in a simple manner.
  • the method can also be carried out with conventional presses, which does not have an independent for each side of the chip or fiber web adjustment of the gap.
  • the effort to carry out the method is substantially reduced, because thereby an independent of the current measurement value adjustment of the bearing body is unnecessary.
  • the effort for the regulation of the material supply is comparatively low in contrast.
  • a pressure sensor is assigned to the lateral edge sections of the chip or fiber web.
  • varying pressure conditions can be detected across the width of the chip or fiber web and the material supply can be dimensioned differently over the width of the chip or fiber web. The method can therefore be further optimized with little effort.
  • the material supply is basically determined by the volume flow of the chip or fiber web forming chip or fiber substance. For example, this can be limited by means of a scalper roller, the amount supplied.
  • Fig. 1 shows a schematic diagram of a continuous press 1, for producing chip or fiber webs 2.
  • the provided with a binder chip or fiber web 2 is for this purpose applied between a press drum 3 and a pressure roller 4 with a line pressure, which leads to the required density.
  • the desired gap dimension "a" is first set by means of the serving as actuating means hydraulic cylinder 23 arranged driveable roller 4.
  • the line pressure is detected continuously by means of pressure sensors 5 and the material supply is changed as a function of the determined deviations from a desired value until the line pressure reaches a desired value.
  • the hydraulic cylinders 23 serving as actuating means can also be used independently of the pressure sensors in order to initially set a relatively large gap between the press drum 3 and the press belt 5 at the beginning of a continuous pressing of the fiber mat 2. Only when a mat leaves the pressing device again, the desired final pressure and / or the desired gap size with which the pressure roller 4 or the not shown very small rollers press in the direction of the main roller, set.
  • Fig. 2 shows a device 1 for the continuous production of chipboard or fiberboard 2, with a press drum 3 and a pressure roller 4. Between the press drum 3 and the pressure roller 4, a revolving press belt 5 is arranged, with which the chip or fiber plates 2 and the fiber fleece be pressed flat against the circumference of the press drum 3. In order to avoid an undesirable influence of impurities on the production process, cleaning agents 60 are applied with a cleaning device 6 substantially over the entire width of the press belt 5 against this.
  • the nonwoven fabric 2 is conveyed via a conveyor belt 24 in the direction of the press entry, wherein in the region between the conveyor belt and the entrance, the nonwoven is supported by a transfer table 25. The table is tilted down towards the entrance.
  • Spaltgetablyverringernde very - small rollers 21 press the press belt 5 against the press roller 3 and prevent springing of the compressed mat.
  • trimming rollers are provided, which finally bring the pressed plates to the desired dimension or correct deviations.
  • this cleaning device 6 designed as a brush is arranged on the outside on an endless carrier web 7, which can be driven circumferentially by means of a drive 8 transversely to the direction of movement of the press belt 5.
  • the drive 8 and a bearing 9 of the carrier web 7 are common to one.
  • Holding means 10 of the device 1 in different positions with at least two degrees of freedom adjustable.
  • pneumatic cylinder 11 by which the holding means 10 according to the respectively detected by one of the two edge regions of the press belt 5 associated sensors 12 relative position and orientation of the press belt 5 is adjustable.
  • the cleaning device 6 in Fig. 2 and 3 can also act against the underside of the press belt 5 to eliminate in particular caked particles lying on the press belt

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  • 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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Claims (25)

  1. Dispositif de pressage (1) pour la production continue de panneaux de particules ou de fibres, dans lequel, sur le tapis de particules ou de fibres (2) pourvu d'un liant, est appliquée une pression linéaire entre un tambour de pressage (3) et un cylindre presseur (4) et est ensuite appliquée une pression de surface entre une bande rotative (5) et le tambour de pressage (3), et dans lequel
    - des moyens (23) sont prévus pour régler l'écartement souhaité entre le tambour de pressage (3) et le cylindre presseur (4), et
    - des moyens sont prévus pour modifier l'amenée de matière à la nappe de particules ou de fibres,
    caractérisé en ce qu'un capteur de pression est prévu pour détecter la pression linéaire.
  2. Dispositif (1) selon la revendication 1, caractérisé en ce que la bande (5) est une bande de pressage rotative, en particulier une bande en acier qui permet de presser les panneaux de particules ou de fibres (2) contre la périphérie du tambour de pressage (3).
  3. Dispositif (1) selon la revendication 2, caractérisé en ce qu'un appareil de nettoyage (6) peut être appliqué sensiblement sur toute la largeur de la bande de pressage (3).
  4. Dispositif (1) selon la revendication 3, caractérisé en ce que l'appareil de nettoyage (6) est disposé sur une nappe de support (7) pouvant être entraînée en rotation sensiblement transversalement à la direction de déplacement de la bande de pressage (6) au moyen d'un entraînement (8).
  5. Dispositif selon une des revendications précédentes, caractérisé en ce que le tapis (2) est introduit dans le dispositif en biais par le haut.
  6. Dispositif selon une des revendications précédentes, caractérisé en ce que le tapis (2) est un tapis précompacté.
  7. Dispositif selon une des revendications précédentes, caractérisé en ce que des moyens de chauffage sont prévus pour chauffer le dispositif.
  8. Dispositif selon une des revendications précédentes, caractérisé en ce qu'un cylindre tendeur (20) est prévu mobile, de façon que la bande de pressage (5) passant sur le cylindre tendeur puisse être tendue et permette ainsi de régler la pression de surface souhaitée.
  9. Dispositif selon une des revendications précédentes, caractérisé en ce que le cylindre tendeur (20) tend la bande de pressage (5), de façon qu'une pression de surface d'au moins 25 N/cm2, de préférence d'au moins 30 N/cm2, puisse être atteinte.
  10. Dispositif selon une des revendications précédentes, caractérisé en ce que le tambour de pressage (3), le cylindre tendeur (20) et/ou le cylindre presseur (4) peuvent être chauffés.
  11. Dispositif selon une des revendications précédentes, caractérisé en ce que de très petits cylindres (21), qui présentent un diamètre de 300 à 450 mm, sont en outre placés à la suite du cylindre presseur.
  12. Dispositif selon une des revendications précédentes, caractérisé en ce que celui-ci est conçu de façon qu'un écartement relativement grand entre tambour de pressage (3) et bande de pressage (5) soit d'abord réglé au début d'une compression continue du tapis (2) et que la pression finale souhaitée et/ou l'écartement souhaité, avec laquelle ou lequel les cylindres presseurs ou les très petits cylindres pressent dans la direction du cylindre principal, ne soient réglés que lorsqu'un tapis quitte le dispositif de pressage.
  13. Dispositif selon une des revendications précédentes, caractérisé en ce que des moyens (5, 23) sont prévus latéralement par rapport à la direction de déplacement pour surveiller et corriger en continu la position de la bande de pressage, de manière à empêcher un échappement latéral de la bande de pressage.
  14. Dispositif selon une des revendications précédentes, caractérisé en ce que les moyens pour surveiller la position de la bande de pressage comprennent des capteurs mécaniques et/ou optiques.
  15. Dispositif selon une des revendications précédentes, caractérisé en ce que les moyens pour corriger la position de la bande de pressage comprennent des moyens de réglage (23) qui agissent sur au moins un des cylindres, en particulier sur leurs axes.
  16. Dispositif selon une des revendications précédentes, caractérisé en ce que des moyens de réglage sont prévus sur plusieurs cylindres, en particulier sur tous les cylindres.
  17. Dispositif selon une des revendications précédentes, caractérisé en ce qu'une commande électronique est reliée aux moyens de réglage, de façon que le cylindre presseur puisse être pressé parallèlement contre le cylindre principal.
  18. Dispositif selon une des revendications précédentes, caractérisé en ce qu'une bande de transport (24) est prévue, de façon que le tapis puisse être guidé au moyen de la bande de transport vers la zone par laquelle le tapis est introduit dans la presse en biais par le haut.
  19. Dispositif selon une des revendications précédentes, caractérisé en ce qu'entre la bande de transport et l'entrée dans la presse est prévue une surface de transfert (25) qui comble la zone entre bande de transport (24) et l'entrée dans la presse.
  20. Dispositif selon une des revendications précédentes, caractérisé en ce que, pour amener de la vapeur sur la surface de transfert et/ou au-dessus de la surface de transfert, sont prévus des moyens qui humidifient le tapis.
  21. Dispositif selon une des revendications précédentes, caractérisé en ce que des moyens (60) pour traiter les cylindres et/ou la bande de pressage sont prévus.
  22. Dispositif selon une des revendications précédentes, caractérisé en ce que celui-ci est conçu de façon à régler d'abord un écartement souhaité entre le tambour de pressage et le cylindre presseur et à régler ensuite la pression linéaire déterminant la densité en modifiant l'amenée de matière à la nappe de particules ou de fibres.
  23. Dispositif selon une des revendications précédentes, caractérisé en ce que celui-ci est conçu de façon qu'un capteur de pression soit associé à chacune des bordures latérales des nappes de particules ou de fibres.
  24. Procédé de travail pour la production continue de nappes de particules ou de fibres, dans lequel, sur la nappe de particules ou de fibres pourvue d'un liant, est appliquée une pression linéaire entre un tambour de pressage (3) et un cylindre presseur (4) pour produire une densité souhaitée et, en plus, est appliquée une pression de surface entre une bande rotative (5) et le tambour de pressage (3), caractérisé en ce qu'un écartement souhaité entre le tambour de pressage (3) et le cylindre presseur (4) est réglé d'abord et la pression linéaire déterminant la densité est réglée ensuite en modifiant l'amenée de matière à la nappe de particules ou de fibres, la pression linéaire étant détectée par un capteur de pression.
  25. Procédé de travail selon la revendication 24, caractérisé en ce qu'un capteur de pression est associé à chacune des bordures latérales des nappes de particules ou de fibres.
EP03720569.7A 2003-02-26 2003-05-17 Presse et procede de production de panneaux Expired - Lifetime EP1615757B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20303207U DE20303207U1 (de) 2003-02-26 2003-02-26 Pressvorrichtung für die Plattenherstellung
PCT/EP2003/005207 WO2004076142A2 (fr) 2003-02-26 2003-05-17 Presse et procede de production de panneaux

Publications (2)

Publication Number Publication Date
EP1615757A2 EP1615757A2 (fr) 2006-01-18
EP1615757B1 true EP1615757B1 (fr) 2014-04-23

Family

ID=7980412

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EP03720569.7A Expired - Lifetime EP1615757B1 (fr) 2003-02-26 2003-05-17 Presse et procede de production de panneaux

Country Status (12)

Country Link
US (1) US20060172026A1 (fr)
EP (1) EP1615757B1 (fr)
CN (1) CN1812872B (fr)
AU (1) AU2003224160A1 (fr)
CA (1) CA2512763A1 (fr)
DE (1) DE20303207U1 (fr)
ES (1) ES2477999T3 (fr)
PL (1) PL214286B1 (fr)
PT (1) PT1615757E (fr)
RU (1) RU2310558C2 (fr)
UA (1) UA88260C2 (fr)
WO (1) WO2004076142A2 (fr)

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CN102581919A (zh) * 2010-09-28 2012-07-18 杨廷 秸秆板专用高温压缩设备
RU2494858C1 (ru) * 2012-04-26 2013-10-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Сибирский государственный технологический университет" (СибГТУ) Способ ориентации древесных частиц
CN102975238A (zh) * 2012-11-07 2013-03-20 蒋克红 一种竹板压制成型机构
CN102975237A (zh) * 2012-11-07 2013-03-20 蒋克红 一种新型竹板挤压装置
DE102013103018A1 (de) * 2013-03-25 2014-09-25 Dieffenbacher GmbH Maschinen- und Anlagenbau Verfahren und Vorrichtung zur Reinigung von luftdurchlässigen Verdichtungsbändern
DE102016116010C5 (de) * 2016-08-29 2023-12-21 Fritz Egger Gmbh & Co. Og Doppelbandpresse und Verfahren zum kontinuierlichen Pressen einer Holzwerkstoffmatte zur Bildung einer Holzwerkstoffplatte oder eines Laminats
CN108995011A (zh) * 2018-07-09 2018-12-14 睢宁县永华木业有限公司 一种快速装配式竹木纤维板压合装置
CN109866460B (zh) * 2019-04-17 2021-04-13 镇江金莲食品有限公司 一种用于食用植物油加工的装置

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US2439779A (en) * 1945-03-29 1948-04-13 Boston Woven Hose & Rubber Com Apparatus for controlling pressure bands
US2516636A (en) * 1947-03-04 1950-07-25 Boston Woven Hose & Rubber Com Band cleaning mechanism for continuous vulcanizing machines
US2890484A (en) * 1957-01-03 1959-06-16 Rayonier Inc High pressure processing apparatus
DE2050325A1 (de) * 1970-10-14 1972-04-20 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover Einrichtung zur kontinuierlichen Herstellung von dünnen Spanplatten
US3874962A (en) * 1970-10-14 1975-04-01 Berstorff Gmbh Masch Hermann Apparatus for the continuous production of thin wood-wool boards
DE2420029C3 (de) * 1974-04-25 1978-11-23 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover Preßeinrichtung zum kontinuierlichen Herstellen von Spanplatten, Faserplatten o.dgl
DE2560066B1 (de) * 1974-05-29 1979-12-13 Treibacher Chemische Werke Ag Verfahren zur Herstellung von Schleifmaterialien auf der Basis von Aluminiumoxid,gegebenenfalls zusammen mit anderen Oxiden
DE3301056A1 (de) * 1982-03-03 1983-09-15 G. Siempelkamp Gmbh & Co, 4150 Krefeld Vorrichtung fuer das kontinuierliche pressen einer pressgutbahn, insbesondere bei der herstellung von laminatbahnen
US4710271A (en) * 1986-04-08 1987-12-01 Ray R. Miller Belt and drum-type press
DE3800994A1 (de) * 1988-01-15 1989-08-17 Berstorff Gmbh Masch Hermann Presse zum kontinuierlichen herstellen von span- und faserplatten oder dergleichen
DE3903022C1 (fr) * 1989-02-02 1990-04-26 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover, De
US5223071A (en) * 1989-02-02 1993-06-29 Hermann Berstorff Maschinenbau Gmbh Apparatus for producing chip and fiberboard webs of uniform thickness
DE3937421C1 (fr) * 1989-11-10 1991-01-24 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover, De
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Also Published As

Publication number Publication date
WO2004076142A2 (fr) 2004-09-10
EP1615757A2 (fr) 2006-01-18
WO2004076142A3 (fr) 2009-03-26
PL214286B1 (pl) 2013-07-31
ES2477999T3 (es) 2014-07-18
RU2005125565A (ru) 2006-04-10
AU2003224160A8 (en) 2009-04-23
DE20303207U1 (de) 2003-06-05
AU2003224160A1 (en) 2004-09-17
UA88260C2 (uk) 2009-10-12
US20060172026A1 (en) 2006-08-03
CN1812872B (zh) 2010-04-28
CA2512763A1 (fr) 2004-09-10
PL380993A1 (pl) 2007-04-16
CN1812872A (zh) 2006-08-02
PT1615757E (pt) 2014-07-11
RU2310558C2 (ru) 2007-11-20

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