EP2527116B1 - Kontinuierliche Presse und Verfahren mit solchen Presse - Google Patents

Kontinuierliche Presse und Verfahren mit solchen Presse Download PDF

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Publication number
EP2527116B1
EP2527116B1 EP11167950.2A EP11167950A EP2527116B1 EP 2527116 B1 EP2527116 B1 EP 2527116B1 EP 11167950 A EP11167950 A EP 11167950A EP 2527116 B1 EP2527116 B1 EP 2527116B1
Authority
EP
European Patent Office
Prior art keywords
press
plate
accordance
bearing pads
plates
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
EP11167950.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2527116A1 (de
Inventor
Hans Fechner
Michael SCHÖLER
Lothar Sebastian
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siempelkamp Maschinen und Anlagenbau GmbH and Co KG filed Critical Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
Priority to EP11167950.2A priority Critical patent/EP2527116B1/de
Priority to CN201110194748.6A priority patent/CN102794811B/zh
Publication of EP2527116A1 publication Critical patent/EP2527116A1/de
Application granted granted Critical
Publication of EP2527116B1 publication Critical patent/EP2527116B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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

Definitions

  • the invention relates to a continuous press for the production of wood-based panels, especially fiberboard or chipboard, with a press frame with several in the press longitudinal direction lined press frame, wherein within the press frame a press nip forming upper press plate and lower press plate are arranged, wherein the upper press plate or the lower press plate is applied to a plurality of rows of cylinder piston arrangements distributed in the press longitudinal direction, which are connected on the one hand to the transverse bars of the press frame and on the other hand to the respective press plate, wherein the press plate facing away from the cylinder piston assemblies is connected with the interposition of one or more pressure distribution to the cross bars of the press frame associated with this press plate, wherein at the pressure distribution plates, z. B. between each two adjacent press frame, supports are fixed to the press plate.
  • the supports are therefore preferably arranged offset from the directions of force introduction of the cylinder.
  • the supports are preferably designed as insulation bearings.
  • Continuous press means in particular a continuously operating press with in the press upper part and in the press base endlessly circulating press belts, z. B. steel press belts, which with the interposition of WälzSystemaggregaten, z. B. rolling rods are supported on the press plates.
  • Wood-based panels means especially fiberboard or chipboard, more preferably MDF (Medium Densified Fiber) panels.
  • MDF Medium Densified Fiber
  • the press plates are designed as heated press plates and consequently heating plates.
  • inlet and outlet plates may be connected upstream, which form a tapered in the direction of the inlet gap, wherein the upper and / or lower inlet plate are also acted upon with cylinder piston assemblies. Consequently, the pressed material mat to be pressed is first compressed in the area of the inlet mouth in a compression zone. This compression zone is followed by a soaking zone, in which the mat is pressed onto the final dimension using pressure and heat. Finally, the so-called calibration zone, in which the pressed material mat is finished with relatively low pressing pressure and exact press nip adjustment, adjoins this heat-through zone.
  • the invention preferably relates to a press, in which the upper transverse bars and lower crossbars of the press frame are opposed.
  • the working cylinder piston assemblies are (directly) connected to the upper or lower transverse spars for the realization of a simple construction, that is, the power of the working cylinder is introduced at the level of the press frame in the product.
  • the supports of the upper and lower press plates are practically opposite each other, so that there may be press nip fluctuations in which the press nip in the longitudinal direction of the plate between the press frame by the back pressure of the mat springs. This effect is reduced or prevented by the arranged between the press frame supports.
  • a continuous press of the type described above is z. B. from the DE 103 20 741 B4 known.
  • the cylinder piston assemblies are connected to the upper press plate, while the lower press plate rests with the interposition of the pressure distribution plates with the supports on the press frame.
  • tilting principle is also realized in conventional frame structures in which the cylinder piston assemblies are connected to the frame structures and in which the working direction of the cylinder piston assemblies is substantially in the frame plane.
  • a continuous press for the production of wood-based panels, according to the preamble of claim 1, wherein at least one support with a supporting effect of the press plate is arranged in the press at least between two press frames, each support end of the support at least partially in each case extends into the bearing areas of two adjacent press frame. Between the carrier and the press plates lying intermediate pieces are arranged with a supporting effect substantially parallel to the press frame. The exact arrangement of the intermediate pieces or the support lines of the press plates by the press frame or the cylinder piston assemblies should be a case by case decision and taken in the context of press construction.
  • the invention has for its object to provide a continuously operating press, with which can be produced wood panels of high quality in a particularly economical manner.
  • the invention teaches in a continuous press with the features of claim 1 and a method according to claim 15. It is within the scope of the invention that the support -. B. before the start of production or during maintenance interruptions - be manually positioned at unpressurized press. However, it is particularly preferred within the scope of the invention for an automated and consequently remote-controlled positioning of the supports in the press longitudinal direction.
  • the supports according to a preferred embodiment by means of actuators over a predetermined length range (machine) in the press longitudinal direction be displaced. With these actuators can it be z. B. hydraulic actuators, z. B. hydraulic cylinders, or even to electromotive actuators, z. B. electromotive spindle drives act.
  • the invention is initially based on the principle known knowledge that press nip fluctuations can be avoided or reduced in a continuous press, if pressure distribution plates with supports, z. B. Isolleitersauflagern, are used, which are offset between the press frame and in particular offset from the working direction of the cylinder piston assemblies are arranged.
  • the supports are no longer designed as permanently installed and thus fixed to the pressure distribution plates insulation support, but according to the invention, the supports are displaceable in the press longitudinal direction.
  • the displaceable supports are arranged in their basic position between two adjacent press frame, z. B. centrally between two adjacent press frame. It can be arranged in each case a displaceable support between two adjacent press frame, which in the basic position z. B. is arranged centrally between two adjacent press frame.
  • the press frame in each case two displaceable supports are assigned, which are arranged in their normal position each with a predetermined distance to the press frame on both sides of the press frame.
  • the sliding supports are not arranged in their basic position between two adjacent press frame, but (approximately) at the level of the press frame. Always succeeds by shifting the supports optimal adjustment of the pressing process.
  • the supports are moved in the field of press frame or are in their normal position in the press frame.
  • a press with classic press characteristics is created, which the pressing forces of the cylinder piston assemblies directly into the underlying (or above) arranged press frame, so that it comes between the individual press frame to the generally known springs of the press nip or can come.
  • the supports can be positioned exactly centered between the press frame, so that then a press is created, which operates on the conventional Schliegelitz.
  • almost any constellations can be adjusted by shifting the supports, so that the press characteristic between the two extreme cases described can be varied as desired.
  • the support can actually be moved over the entire area between these extreme cases, that is from the frame level on the one hand to the central positioning between the frame on the other.
  • the supports are displaceable from their basic position only over a limited range.
  • the optimal position of the support can z. B. previously determined empirically by experiments and then made for the preparation of a particular product, taking into account the previously performed experiments in terms of a fixed default, so that then during the pressing operation no adaptation is needed anymore.
  • a dynamic adaptation of the machine and consequently a dynamic positioning of the supports takes place during the pressing process. This creates a total of a dynamic machine created by control or regulation, z. B. can be adapted by adaptive control or regulation of the product. Because according to the invention now not only the already existing press cylinder are variably adjustable, but in addition, a variable adjustment and optimization of the pressure distribution can be realized on the displaceable supports.
  • the principle known "Schmiegetropic" optimize by z. B. can be adjusted by optimal adjustment not over the press longitudinal direction or not significantly varying press nip.
  • the invention also allows the targeted variation of the press nip over the press longitudinal direction, and was not only using the conventional press cylinder, but by the interaction between press cylinders on the one hand and variation of the position of the support on the other.
  • the pressing process can thus be optimized in a special way, so that not only improves the product properties, but in particular a significant amount of glue can be achieved.
  • the principle can be used not only in thin plates and thin plates, in which hitherto primarily a tilting principle should be realized, but particularly preferred can be produced with the press according to the invention standard plates or thick plates, where previously the use of pressure distribution plates and supports was of secondary importance.
  • the supports In principle, it is expedient for the supports to be displaceable "on both sides” and consequently both in the working direction and counter to the working direction are displaceable.
  • suitable drives should be provided.
  • the individual supports can be assigned a plurality of drives that work on both sides of the supports.
  • individual drives that work in both directions on the supports, for. B. in the sense of a pushing and a pulling movement.
  • the actuators are connected to a control device with which the position of the supports in dependence on one or more process parameters can be controlled or regulated.
  • a positioning of the supports as a function of the properties of the incoming Pressgutmatte, z. As basis weight, thickness, etc. take place.
  • the control device forms a process computer.
  • the control device can thus be part of the already provided for the operation of the press process computer connected to a variety of sensors and in particular with the rest of the press control, z. B. the control of the pressing cylinder is connected.
  • all supports are positionable and provided, for example, with actuators.
  • only a portion of the supports is positionable in the manner described.
  • the pressure distribution plates and the supports are arranged or distributed in the press longitudinal direction over an area, the more than 75% of the length of the press plates and possibly inlet plates (preferably more than 90% of the length of the press plates and possibly inlet plates) corresponds.
  • a pressure distribution plate for example, each arranged between two adjacent press frame and z. B. may be supported on the lower crossbars of the adjacent press frame.
  • continuous pressure distribution plates can be provided which span a plurality of press frames or even all press frames.
  • the pressure distribution plates which can also be referred to as support plates for the insulation support, form a frame-spanning support structure as a whole.
  • These pressure distribution plates or support plates may be cast or steel plates. It is always expedient if the pressure distribution plates extend over (approximately) the width of the press plates.
  • the continuous press can be equipped in a conventional manner in addition to the press plates with inlet side projecting inlet plates which form a tapered in the direction of inlet gap, wherein the upper inlet plate and / or the lower inlet plate are also acted upon supported on the transverse bars of the press frame cylinder piston assemblies , It is within the scope of the invention if, in the area of the inlet plates, the pressure distribution plates and support according to the invention are dispensed with. Alternatively, however, it is also within the scope of the invention, although the upper or lower inlet plate supported with the interposition of Druckverteilplatten with supports on the respective cross member of the press frame is. These supports can also be positioned in the manner described.
  • the continuous press is designed as an upper-piston press, in which the cylinder piston assemblies on the upper press plate and possibly the upper inlet plate work, in this case, the lower press plate with the interposition of Druckverteilplatten on the lower cross bars of the press frame.
  • the invention can also be implemented in sub-piston presses.
  • the supports are preferably designed as insulation support.
  • the supports can be designed as support strips extending over the respective plate width, which have either a continuous support surface extending over the plate width or else a plurality of singular support surfaces distributed over the plate width. In any case, these support surfaces are preferably arranged in the press longitudinal direction between the press frame and consequently offset from the working direction of the cylinder piston assemblies. Because the cylinder piston assemblies are particularly preferably positioned in the frame plane.
  • each case one or more supports are positioned centrally between each two adjacent press frame.
  • a Traumlagerst Shape in the zero position
  • a press frame in each case at least two supports are assigned, which are each arranged at a predetermined "base distance" to the press frame in the press longitudinal direction on both sides of the press frame.
  • the (positionable) supports protrude as elevations by a predetermined amount from the surface of the pressure distribution plate assigned to the press plate, so that the discrete support points or support surfaces result in the press longitudinal direction.
  • the glues used are, in particular, urea-formaldehyde resins.
  • Wood-based panel in particular means fiberboard and most preferably MDF board.
  • chipboard and especially OSB boards are also covered.
  • the glue savings according to the invention can also be achieved in other types of wood material boards and in particular also with other glues or binders.
  • the invention also relates to a process for the production of wood-based panels with a continuously operating press of the type described.
  • a continuously operating press for the production of wood-based panels, especially MDF boards is shown.
  • This continuous press an incoming in the direction of A in the press Pressgutmatte from glued wood particles, z. B. glued fibers pressed into a wood-based panel.
  • the press has an upper press plate 1 in the press upper part and a lower press plate 2 in the lower press part, each of which is designed as a heating plate.
  • the press plates 1, 2 are arranged in a press frame, which is composed of a plurality of lined in the press longitudinal direction press frame 3. This press frame are realized in the embodiment in window construction of sheet steel blanks.
  • the press in the press upper part and in the press base endlessly circulating steel press belts 4, which with the interposition of WälzSystemaggregaten, z. B. rolling rods 5 are supported on the press plates 1, 2.
  • the press is designed in the embodiment as an upper piston press. That is, a plurality of cylinder piston assemblies 6 arranged in rows operate on the upper press plate 1. In the region of each press frame 3, a series of cylinder piston assemblies 6 is consequently provided, these cylinder piston assemblies 6 being connected, on the one hand, to the upper cross member 3a of the press frame 3 and, on the other hand, to the upper press plate 1.
  • the cylinder piston assemblies 6 are each arranged in the frame plane of the press frame 3, so that the working direction or working plane of the cylinder piston assemblies lies in the frame plane.
  • inlet side projecting inlet plates 1a, 2a are connected, which form a tapered in the direction of A inlet gap E, to which the press nip P formed by the press plates 1, 2 adjoins.
  • the exemplary embodiment involves flexible, flexurally elastic inlet plates for setting a variable inlet contour.
  • one or more hingedly connected inlet plates may be used, which may be composed of a plurality of hingedly interconnected plate sections.
  • the lower inlet plate 2a is - as the lower press plate 2 - supported on the lower crossbars 3b of the press frame 3, while the upper inlet plate 1a - like the upper press plate 1 - cylinder piston assemblies 6 are connected.
  • the lower press plate 2 is connected with the interposition of Druckverteilplatten 7 to the lower crossbars 3b of the press frame.
  • These pressure distribution plates 7 are equipped with supports 8, which are fastened between each adjacent in the press longitudinal direction press frame on the pressure distribution plates 7.
  • Fig. 1 is indicated that these pressure distribution plates 7 are arranged with the supports 8 in the embodiment in the entire press area and in particular in the entire region of the press plates 1, 2.
  • the pressure distribution plates 7 and the supports 8 are thus arranged and distributed in the press longitudinal direction over a range of more than 90% of the length of the press plates 1, 2 and in the embodiment, more than 90% of the total length of press plates 1, 2 and inlet plates 1a, 2a equivalent. Consequently, the use of the pressure distribution plates and supports is not limited to the outlet-side calibration zone of the press, but is both in the heat soak zone and the calibration zone, particularly preferably additionally realized in the inlet zone and consequent compression zone.
  • support 8 preferably extend over the entire width of the press plates 1, 2 and inlet plates 1 a, 2 a. They can be realized as continuous support strands extending over the plate width in the sense of continuous supporting surfaces. Alternatively, however, these support strands can also be formed by a plurality of singular support surfaces distributed over the plate width. Details are not shown. In any case, the supports are designed as insulation supports, so that excessive heat transfer from the heated press plates 1, 2 to the frames is prevented. In the illustrated embodiment, a plurality of individual pressure distribution plates 7 are provided over the press length, wherein a pressure distribution plate 7 is disposed between each two press frame 3 and supported on the lower crossbars 3b of the press frame 3. Alternatively, however, continuous pressure distribution plates can be provided which span a plurality of press frames or even all press frames. This is not shown in the figures.
  • Fig. 2 shows an embodiment in which between each two adjacent press frame a support 8 is arranged as insulation support, said support 8 in the basic position z. B. is positioned centrally between two adjacent press frame 3.
  • Fig. 3 shows an alternative embodiment in which each press frame 3 are each associated with two supports 8, which in each case in the basic position are arranged at a predetermined distance to the press frame on both sides of the press frame 3.
  • the supports 8 are now variably displaceable according to the invention to the pressure distribution plates. This is according to both the embodiment Fig. 2 as well as for the embodiment Fig. 3 indicated.
  • the supports 8 are displaceable by means of actuators 9 over a predetermined length range.
  • actuators 9 can z. B. be designed as a hydraulic cylinder or as an electromotive spindle drives. With the aid of these actuators 9, the individual supports 8 can be displaced both in the working direction A and counter to the working direction A and consequently in both directions.
  • a merely indicated control device 10 is provided in the embodiment, said control device z. B. is connected as a process computer for the continuous press with the other press components and in particular the pressing cylinders 6 and a variety of sensors.
  • the actuators 9 for the supports 8 are now also connected to this process computer 10, so that positioning of the supports 8 can be controlled or regulated as a function of one or more process parameters.
  • a dynamic adaptation of the machine to the properties of the product and consequently the properties of the pressed material mat to be pressed and / or of the pressed pressed product plate. This can be done by control or regulation, z. B. be realized by adaptive control or regulation.
EP11167950.2A 2011-05-27 2011-05-27 Kontinuierliche Presse und Verfahren mit solchen Presse Not-in-force EP2527116B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP11167950.2A EP2527116B1 (de) 2011-05-27 2011-05-27 Kontinuierliche Presse und Verfahren mit solchen Presse
CN201110194748.6A CN102794811B (zh) 2011-05-27 2011-07-13 连续式压力机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11167950.2A EP2527116B1 (de) 2011-05-27 2011-05-27 Kontinuierliche Presse und Verfahren mit solchen Presse

Publications (2)

Publication Number Publication Date
EP2527116A1 EP2527116A1 (de) 2012-11-28
EP2527116B1 true EP2527116B1 (de) 2015-10-07

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EP11167950.2A Not-in-force EP2527116B1 (de) 2011-05-27 2011-05-27 Kontinuierliche Presse und Verfahren mit solchen Presse

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CN (1) CN102794811B (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2527116B1 (de) * 2011-05-27 2015-10-07 Siempelkamp Maschinen- und Anlagenbau GmbH Kontinuierliche Presse und Verfahren mit solchen Presse
CN103009456B (zh) * 2013-01-06 2014-07-30 东北林业大学 一种中密度纤维板连续平压厚度层次协同控制装置与方法
CN104084997B (zh) * 2014-07-07 2016-04-27 南京林业大学 连续成型复合结构材及其制造方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2527116A1 (de) * 2011-05-27 2012-11-28 Siempelkamp Maschinen- und Anlagenbau GmbH & Co. KG Kontinuierliche Presse

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
DE3914105A1 (de) * 1989-04-28 1990-10-31 Siempelkamp Gmbh & Co Pressanlage zum kontinuierlichen pressen von pressgutbahnen
DE4340982B4 (de) * 1993-12-01 2005-04-21 Dieffenbacher Gmbh + Co. Kg Kontinuierlich arbeitende Presse
DE4405343A1 (de) * 1994-02-19 1995-08-24 Dieffenbacher Gmbh Maschf Preß-/Heizplatte für kontinuierlich arbeitende Pressen
DE4438729A1 (de) * 1994-10-29 1996-05-02 Siempelkamp Gmbh & Co Kontinuierlich arbeitende Pressenanlage für die Herstellung von Holzwerkstoffprodukten
DE19806707C2 (de) * 1998-02-18 2003-11-06 Siempelkamp Gmbh & Co Kg G Kontinuierliche Presse zum Verpressen von Preßgutmatten zu Preßgutplatten
DE19828822C1 (de) * 1998-06-27 1999-09-30 Siempelkamp Gmbh & Co Presse, insbesondere kontinuierliche Presse
DE19926258B4 (de) 1999-06-09 2015-07-30 Dieffenbacher GmbH Maschinen- und Anlagenbau Kontinuierlich arbeitende Presse zur Herstellung von Werkstoffplatten
DE10320741B4 (de) 2003-05-09 2005-02-24 Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg Presse, insbesondere kontinuierliche Presse
DE102009023581A1 (de) * 2009-06-02 2010-12-09 Dieffenbacher Gmbh + Co. Kg Presse, insbesondere kontinuierlich arbeitende Presse zur Herstellung von Werkstoffplatten
DE102009023577A1 (de) * 2009-06-02 2010-12-09 Dieffenbacher Gmbh + Co. Kg Presse, insbesondere kontinuierlich arbeitende Presse zur Herstellung von Werkstoffplatten

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2527116A1 (de) * 2011-05-27 2012-11-28 Siempelkamp Maschinen- und Anlagenbau GmbH & Co. KG Kontinuierliche Presse

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CN102794811A (zh) 2012-11-28
CN102794811B (zh) 2016-05-18
EP2527116A1 (de) 2012-11-28

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