WO2009127235A1 - Régulation et commande d'une presse continue - Google Patents

Régulation et commande d'une presse continue Download PDF

Info

Publication number
WO2009127235A1
WO2009127235A1 PCT/EP2008/003097 EP2008003097W WO2009127235A1 WO 2009127235 A1 WO2009127235 A1 WO 2009127235A1 EP 2008003097 W EP2008003097 W EP 2008003097W WO 2009127235 A1 WO2009127235 A1 WO 2009127235A1
Authority
WO
WIPO (PCT)
Prior art keywords
press
control
pressure
measuring unit
measuring
Prior art date
Application number
PCT/EP2008/003097
Other languages
German (de)
English (en)
Inventor
Werner Gawlitta
Erich Haider
Ralf Germes
Original Assignee
Kronoplus Technical Ag
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 Kronoplus Technical Ag filed Critical Kronoplus Technical Ag
Priority to PCT/EP2008/003097 priority Critical patent/WO2009127235A1/fr
Priority to CN200880128585.8A priority patent/CN102006990B/zh
Priority to DE112008003801.5T priority patent/DE112008003801B4/de
Publication of WO2009127235A1 publication Critical patent/WO2009127235A1/fr

Links

Classifications

    • 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
    • B30B5/065—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 using anti-friction means for the pressing band
    • B30B5/067—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 using anti-friction means for the pressing band using anti-friction roller means
    • 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 present invention describes an apparatus and a method for producing sheets by pressing a material by means of a continuous press, in particular for the production of wood-based panels or laminate panels. More particularly, the present invention relates to controlling and controlling the pressing pressure of the pressing cylinders in a continuous press.
  • Continuous presses are used for the production of boards such as wood-based boards, laminate boards, chipboard, fiberboard and the like.
  • the material to be pressed - the pressed material - is pressed continuously between a press upper part and a lower press part by means of an upper pressed steel strip and a lower pressed steel strip.
  • the steel press belts run endlessly around an inlet guide roller and an outlet guide roller.
  • the steel plate press belts are supported in the pressing region under the interposition of rolling elements on rolling plates. With the help of suitable elements, a pressure is exerted on these rolling plates, which is forwarded via the rolling elements and the pressed steel strip on the pressed material. In known systems, this is an arrangement of
  • Press cylinders used. These press cylinders are usually on one side to frames of the continuous press and on the other side at one Abrollplatte attached. On the opposite rolling plate in each case an antidote is arranged in the same area, which can be realized for example by a frame of the continuous press. As a result, a pressure can be built up or held with the aid of pressing cylinders and the counter means between the rolling plate in the press upper part and the rolling plate in the press lower part.
  • the pressures within the continuous press can vary over the course of the product through the press and over time.
  • a control and control system is used in the prior art, which measures with the help of Wegaufhehmern at several points the thickness of the material to be pressed and adapts the pressure of the press cylinder at the respective points accordingly.
  • the thickness of the material to be pressed is measured only at the sides of the rolling plates which are parallel to the passage direction of the material to be pressed.
  • the thickness measured there in many cases does not match the thickness in the middle of the rolling plate, ie between the two sides of the rolling plates.
  • the known measuring systems do not provide stable values over the respective thickness of the press nip.
  • the known control and control systems still lead to jerky deformations and settling phenomena in the pressed Good.
  • the object of the present invention is therefore to provide an apparatus and a method with which the pressures in the continuous press can be controlled in a simple manner, so that a pressed product is produced with a consistent good quality.
  • This object is achieved by the device according to claim 1 and by the method according to claim 8. Preferred embodiments of the invention will become apparent from the dependent claims.
  • a device for producing plates is provided by pressing of corresponding material, wherein the device comprises a press top and a press bottom, each having a rotating steel press belt, a plurality of rolling elements and a rolling plate.
  • the steel press belts are supported in a pressing area with the interposition of the rolling elements on the rolling plates.
  • press cylinders are arranged which together with corresponding opposing countermeans in the other of the press top or press bottom form a pressure between the roll plates.
  • the device comprises at least one direct measuring unit for directly measuring the thickness between the rolling plates at a location spaced from the sides of the rolling plates.
  • This measuring device makes it possible to measure transversely to the direction of passage, i. not only on the sides of the rolling plates but also between the sides of the rolling plates.
  • the device has a control system for controlling and regulating the pressures exerted by the pressure cylinders upstream and / or downstream of the measurement.
  • a direct measuring unit basically any measuring unit can be used which can measure the thickness between the rolling plates at a location spaced from the sides of the rolling plates directly.
  • a measuring unit with a measuring bridge is used for this purpose.
  • This measuring bridge can be arranged, for example, on the foundation or on the foundation support of the continuous press.
  • Measuring unit also includes a arranged between the measuring bridge and at least one of the press plates Wegumehmer.
  • the at least one displacement sensor is spaced from the right in the direction of passage and left sides of the rolling plates of the continuous press arranged to measure the thickness in the middle of the material to be pressed can.
  • the use of the measuring bridge prevents measurement from being influenced by deformations within the continuous press.
  • This direct measuring unit works according to the invention with a control and regulation system that regulates the pressures of the pressing cylinder, which are upstream of the measurement and / or downstream.
  • a control and regulation system that regulates the pressures of the pressing cylinder, which are upstream of the measurement and / or downstream.
  • not only the pressure of the pressing cylinder in the immediate vicinity of the measurement is changed, but the resulting from the measurement change in pressure is distributed to a plurality of pressing cylinders, which preceded the measurement and / or downstream.
  • the measurement according to the invention in conjunction with the control and regulation according to the invention leads to a calmer driving style of the continuous press, that is to say the bandwidth of the pressures of the press cylinders are substantially smaller than in the previously known control and regulating systems.
  • the pressures of the press cylinder can be regulated differently.
  • the control system changes the pressure at upstream and / or downstream press cylinders proportionally to the distance from the direct metering unit.
  • the control system adjusts the pressure at upstream and / or downstream press cylinders exponentially to the distance from the direct metering unit.
  • the control system changes the pressure at upstream and / or downstream press cylinders based on empirically determined dependencies.
  • the control system can process further input signals and account for these signals as the pressures change.
  • the continuous press may still have a measuring unit at the end of the continuous press that measures the thickness of the pressed product as it exits the continuous press.
  • the actual thickness of the plate produced by pressing can be easily measured.
  • These measurement results are preferably taken into account by the control and regulation system when changing the pressures.
  • the device preferably has measuring units for measuring the weight of the material to be pressed and measuring units for measuring the moisture content of the material to be pressed. The measurement results provided by these measuring units are also preferably taken into account by the control and regulation system when changing the pressures.
  • the object is also achieved by a method for the production of plates by pressing appropriate material, with a continuous press having a press top and a press bottom, each having a rotating steel press belt, a plurality of rolling elements and a rolling plate and the steel press belts in a Support pressing area with interposition of the rolling elements on the rolling plates.
  • Press cylinders are arranged on at least one of the press top or press bottom, which together with corresponding opposing countermeans in the other of the press top or press bottom form a pressure between the rolling plates.
  • the thickness between the rolling plates at a location spaced from the sides of the rolling plates is measured directly by means of at least one direct measuring unit and with the aid of a control and regulation system, the pressures exerted by the pressing cylinders, which precedes the measurement and / or downstream, controlled and regulated.
  • the pressures of the pressing cylinders can be regulated differently.
  • the control and regulation system changes the pressure at upstream and / or downstream pressing cylinders proportionally to the distance from the direct measuring unit.
  • control and regulation system changes the pressure at upstream and / or downstream pressing cylinders exponentially to the distance from the direct measuring unit.
  • control and regulation system changes the pressure at upstream and / or downstream pressing cylinders on the basis of empirically determined dependencies.
  • the method according to the invention can carry out further measuring steps and forward the measured values to the control and regulation system for further processing, so that these measurement results are also taken into account when changing the pressures.
  • the continuous press may still have a measuring unit at the end of the continuous press that measures the pressed product as it exits the continuous press. At this point, the actual thickness of the plate produced by pressing can be measured. These measurement results are preferably taken into account by the control and regulation system when changing the pressures.
  • the method preferably comprises measuring steps for measuring the weight of the material to be pressed and measuring the moisture content of the material to be pressed, and also the measurement results obtained by these measuring steps are preferably taken into account by the control and regulation system when changing the pressure.
  • Fig. 1 is a sketch of the structure of a continuous press as may be used in the present invention
  • FIG. 2 is a sketch showing a detailed section of the continuous press showing the press cylinders and direct measuring unit used by the invention; and FIG. 3 shows a sketch of a cross section through the continuous press with a detailed representation of an embodiment of the measuring unit.
  • Figure 1 shows in outline the construction of a continuous press 1, as it can be used in connection with the present invention.
  • the press 1 contains a press upper part 2 and a press lower part 3.
  • a circulating steel press belt 4 which is guided by means of a Einlaufumlenkwalze 7 and a Auslaufumlenkwalze 8.
  • the two steel press belts 4 in a pressing region form a gap in which the pressed material is pressed in the direction of passage 9.
  • rolling elements 5 are arranged at the back of the steel strips.
  • these are steel rods that are guided by means of a chain or another suitable rod circulating device via a circulation path (not shown).
  • the press upper part 2 and the press lower part 3 also have respective rolling plates 6.
  • these rolling plates 6 are heating channels with which the pressed material can be heated.
  • the rolling plates exert pressure on the pressed material via the rolling elements 5 and the steel sheet strips 4.
  • Figure 2 shows a sketch of a section of a continuous press 1 according to the present invention.
  • FIG. 2 shows in greater detail how the pressure is formed between the rolling plates 6.
  • the frame 10 arranged transversely to the passageway 9 of the continuous press 1 can be seen.
  • pressing cylinders 11 are arranged to the frame 10 of the continuous press 1 arranged.
  • the number of pressing cylinders 11 arranged in series depends on the width of the rolling plate 6 or the plate to be produced.
  • the number of press cylinders 11 can also vary over the length of the continuous press 1.
  • the pressure on the upper rolling plate 6 is formed by the pressing cylinders 11 and the pressure on the lower rolling plate 6 by means of an antidote arranged at the opposite location. Between the antidote and the press cylinder 11, the pressure is built up, which is exerted on the Abrollplatten 6, the rolling body 5 and the steel sheet press belts 4 on the material to be pressed.
  • the antidotes may be active or passive.
  • An example of an active antidote is adjustable under-support of the lower roll-off plate 6, while a passive antidote may be provided, for example, by a fixed, i.e. non-adjustable support of the lower rolling plate 6 can be realized.
  • a direct measuring unit 12 is shown between two adjacent rows of pressing cylinders 11 or counter means.
  • this direct measuring unit 12 is realized by a measuring bridge.
  • the values measured at this measuring bridge are forwarded to the control and regulation system, so that the pressures at the pressing cylinders upstream of the measurement with respect to the passage direction (I Ia, I Ib) and / or downstream (Hc, 1 Id, 1 Ie) are, can be changed accordingly.
  • FIG. 3 shows a cross section through a continuous press 1 with a frame 10 and three pressing cylinders 11. In the frame 10, an upper rolling plate 6 and a lower rolling plate 6 are arranged.
  • the lower rolling plate 6 rests on the frame 10, while the upper rolling plate 6 is connected to the frame 10 via press cylinders 11.
  • the two rolling plates 6 Wegaufillon 13 are arranged, which measure the thickness of the gap between the rolling plates 6 on the sides of the rolling plates 6.
  • the continuous press 1 also has a measuring bridge 12, with which the thickness of the gap between the rolling plates can be measured directly from the sides at a distance.
  • the measuring bridge has four odometer 14.
  • Two distance measuring devices 14 measure the distance between an upper measuring bridge part 12 and the upper rolling plate 6 and two further distance sensors 14 measure the distance between a lower measuring bridge part 12 and the lower rolling plate 6. These values are forwarded to the control and regulation system derives the thickness between the rolling plates 6 from these measurement results.
  • the measuring bridge is used to measure at locations spaced from the sides of the rolling plates 6. This measurement can be performed at any location spaced from the sides. In one embodiment, only one measurement is performed and this takes place substantially midway between the sides of the rolling plates 6.
  • the measuring bridge as shown in FIG. 3, is in contact with the continuous press 1 only via the distance sensors 14.
  • the other components of the measuring bridge are spaced from the continuous press 1, so that the pressures present in the continuous press 1 produce the measuring result can not influence.
  • the present invention provides for the first time an apparatus and a method by which the pressures in the continuous press can be controlled in a simple manner, so that a pressed product can be produced with a consistently good quality.

Landscapes

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

Abstract

L'invention porte sur un dispositif de fabrication de plaques par pressage d'un matériau adéquat, comprenant une partie supérieure de presse (2) et une partie inférieure de presse (3) possédant respectivement une bande (4) rotative de compression en tôle d'acier, plusieurs corps de roulement (5) et une plaque de déroulement (6), les bandes (4) rotatives de compression en tôle d'acier s'appuyant dans une zone de pressage sur les plaques de déroulement (6) par l'intermédiaire des corps de roulement (5), des vérins de compression (11) qui sont montés dans au moins l'une de la partie supérieure de presse (2) et de la partie inférieure de presse (3), appliquent avec des organes conjugués opposés, disposés respectivement dans l'autre partie - partie supérieure de presse (2) ou partie inférieure de presse (3) - une pression entre les plaques de déroulement (6).  Ce dispositif est caractérisé par le fait qu'il possède au moins une unité de mesure directe (12) pour la mesure directe de l'épaisseur entre les plaques de déroulement (6) à un endroit éloigné des bords des plaques de déroulement (6), et que des systèmes de commande et de régulation destinés à commander et réguler les pressions qui sont exercées par les vérins de compression (11) sont montés en amont et/ou en aval de la mesure.
PCT/EP2008/003097 2008-04-17 2008-04-17 Régulation et commande d'une presse continue WO2009127235A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/EP2008/003097 WO2009127235A1 (fr) 2008-04-17 2008-04-17 Régulation et commande d'une presse continue
CN200880128585.8A CN102006990B (zh) 2008-04-17 2008-04-17 对连续压机的调节和控制
DE112008003801.5T DE112008003801B4 (de) 2008-04-17 2008-04-17 Regelung und Steuerung einer kontinuierlichen Presse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/003097 WO2009127235A1 (fr) 2008-04-17 2008-04-17 Régulation et commande d'une presse continue

Publications (1)

Publication Number Publication Date
WO2009127235A1 true WO2009127235A1 (fr) 2009-10-22

Family

ID=40133661

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/003097 WO2009127235A1 (fr) 2008-04-17 2008-04-17 Régulation et commande d'une presse continue

Country Status (3)

Country Link
CN (1) CN102006990B (fr)
DE (1) DE112008003801B4 (fr)
WO (1) WO2009127235A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015107314A1 (de) * 2015-05-11 2016-11-17 Dieffenbacher GmbH Maschinen- und Anlagenbau Kontinuierlich arbeitende Presse
CN105479567A (zh) * 2015-11-23 2016-04-13 王金青 一种组合式劈木设备的劈木定位防震机构
DE102016008608B3 (de) * 2016-07-15 2017-10-26 Siempelkamp Maschinen- Und Anlagenbau Gmbh Verfahren zur Herstellung von Holzwerkstoffplatten

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4110678C1 (en) * 1991-04-03 1992-10-15 G. Siempelkamp Gmbh & Co, 4150 Krefeld, De Operating press in mfr. of cupboard, fibreboard, or laminated panels - uses extra RAMs for correcting position steel sheet bands according to operational measured values
DE4344400A1 (de) * 1993-12-24 1995-06-29 Dieffenbacher Gmbh Maschf Kontinuierlich arbeitende Presse
DE4344401A1 (de) * 1993-12-24 1995-06-29 Dieffenbacher Gmbh Maschf Meß- und Steuereinrichtung für eine kontinuierlich arbeitende Presse
DE19829741C1 (de) * 1998-07-03 1999-08-26 Siempelkamp Gmbh & Co Verfahren und Presse zum Verpressen, insbesondere kontinuierlichen Verpressen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4433643C1 (de) * 1993-12-11 1996-02-08 Siempelkamp Gmbh & Co Kontinuierliche Presse für die Herstellung von Spanplatten, Faserplatten, Laminatplatten und ähnlichen Preßgutplatten
DE10123793C2 (de) * 2001-05-16 2003-08-21 Metso Paper Inc Verfahren zur kontinuierlichen Herstellung von Holzspanplatten und ähnlichen bahnförmigen Plattenwerkstoffen und entsprechende Doppelbandpresse
DE102006009108A1 (de) * 2006-02-24 2007-08-30 Dieffenbacher Gmbh + Co. Kg Verfahren und kontinuierlich arbeitende Presse zur Herstellung von Werkstoffplatten
CN100491069C (zh) * 2007-03-29 2009-05-27 上海大学 高精度轧辊磨床轧辊圆度及辊形误差在线测量装置及方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4110678C1 (en) * 1991-04-03 1992-10-15 G. Siempelkamp Gmbh & Co, 4150 Krefeld, De Operating press in mfr. of cupboard, fibreboard, or laminated panels - uses extra RAMs for correcting position steel sheet bands according to operational measured values
DE4344400A1 (de) * 1993-12-24 1995-06-29 Dieffenbacher Gmbh Maschf Kontinuierlich arbeitende Presse
DE4344401A1 (de) * 1993-12-24 1995-06-29 Dieffenbacher Gmbh Maschf Meß- und Steuereinrichtung für eine kontinuierlich arbeitende Presse
DE19829741C1 (de) * 1998-07-03 1999-08-26 Siempelkamp Gmbh & Co Verfahren und Presse zum Verpressen, insbesondere kontinuierlichen Verpressen

Also Published As

Publication number Publication date
CN102006990B (zh) 2014-10-01
DE112008003801B4 (de) 2016-01-21
CN102006990A (zh) 2011-04-06
DE112008003801A5 (de) 2011-06-09

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