WO2008074417A2 - Verfahren und vorrichtung zum verpressen von pressgutmatten - Google Patents
Verfahren und vorrichtung zum verpressen von pressgutmatten Download PDFInfo
- Publication number
- WO2008074417A2 WO2008074417A2 PCT/EP2007/010790 EP2007010790W WO2008074417A2 WO 2008074417 A2 WO2008074417 A2 WO 2008074417A2 EP 2007010790 W EP2007010790 W EP 2007010790W WO 2008074417 A2 WO2008074417 A2 WO 2008074417A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- inlet
- press
- density
- mat
- inlet gap
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/24—Moulding or pressing characterised by using continuously acting presses having endless belts or chains moved within the compression zone
-
- 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
- B27N3/10—Moulding of mats
- B27N3/14—Distributing or orienting the particles or fibres
-
- 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 method for pressing Pressgutmatten in the course of the production of wood-based panels in a continuous press, wherein the continuous press upper and lower heating plates, inlet side projecting upper and lower inlet plates to form a Einlaufmauls with inlet gap and in press upper part and press base endlessly circulating steel press belts , which are supported with the interposition of rolling rods on the inlet plates and the heating plates, wherein the inlet gap height of the inlet gap and possibly the inlet contour of the inlet plates are set and wherein an upstream in one of the press scattering station produced and optionally pretreated pressed material mat with a certain mat height and a specific Mat density or specific basis weight is introduced into the continuous press and pressed.
- the pressed material mat is pre-compressed in the inlet mouth in a pre-compression zone upstream of the inlet plates up to an inlet gap height h 0 and then pressed in the region of the inlet plates and finally the heating plates.
- EinlaufspaltSh means in the invention, the height of the press nip or the inlet gap in the region of the leading edge of the upper and / or lower inlet plate or in the region of the axis or shaft of the upper and / or loweradosrades for the rolling rods.
- - Wood-based panels means in the context of the invention, in particular fibreboard, (eg MDF boards), chipboard or OSB boards (Oriented Strand Board).
- the inlet plates are preferably designed as heatable Einlaufsammlungn. Furthermore, it is preferably highly flexible inlet plates, wherein the upper inlet plate and / or the lower inlet plate for adjusting the inlet contour is acted upon by a plurality of cylinder piston assemblies. Processes for the production of wood-based panels in continuous presses are known in various embodiments. There is always the need to produce wood-based panels with ongoing quality as economically as possible.
- the pressed material mat precompressed already before the inlet plates in a Vorkompressionszone so that the heated inlet plates are then available over their entire plate length for the temperature pressure buildup in the pressed material mats, since excess air is already blown out in the pre-compression zone.
- the precompression zone is formed by a region of the steel press belts, which are supported on the inlet plates upstream rollers or belt support rollers, which can take over the function of press rollers here (see DE 102 14 322 A1). The extent known measures have proven in principle.
- the inlet gap height does not fall below a certain minimum value, this minimum value being preselected taking into account the mat height of the incoming spreading material mat (eg 75% of the mat height).
- the infeed system is preceded by a position measuring system which measures the chip / fiber mat height with a displacement sensor and forwards it to a computer.
- the measured value is the manipulated variable for the hydraulic actuators for the upper inlet plate sections (see DE 43 01 594 A1).
- the invention has the object of providing a generic method for pressing pressed material mats in a continuous press of the type described above in such a way that you can work in the inlet mouth with high densities without damage or disturbances are to be feared.
- the invention teaches in a generic method for pressing Pressgutmatten in the course of the production of wood-based panels in a continuous press that checks the Einlaufspalt Too depending on the density and / or the basis weight of the pressed material mat, adjusted and / or regulated.
- the invention is based on the recognition that it is expedient if the inlet gap height, z. B. in the region of the insertion, not depending on the mat height of the scattered mat, but in dependence on the density or the basis weight of the mat is adjusted. Consequently, a "density-guided" driving style is proposed.
- the invention proposes in a preferred and particularly simple embodiment, that the described review, adjustment and / or regulation taking into account a predetermined target density or a predetermined target basis weight occurs.
- the invention is based on the recognition that it is not absolutely necessary to carry out the adjustment or regulation described on the basis of the actually set and measured densities or basis weights. Because in the course of spreading the grit mat is usually entered by the operator at a given Form Non effet a target value for the basis weight, the actual basis weight is used to control the spreader or control.
- the setting according to the invention of the desired setting height ho can then be carried out on the basis of this predetermined setpoint value of the basis weight of the spreading material mat, since this setpoint value is constant as a pure default value at least over a certain period of time.
- Target weight or target surface weight means in the context of the invention, in particular the so-called “pushed” target surface weight, the addition “pushed” makes it clear that z.
- the belt scale for determining the target basis weight is arranged upstream of the inlet gap with a predetermined distance. It is therefore taken into account in the review or setting the time delay between the time of setting the target weight and the time at which the relevant mats section enters the inlet gap.
- the setting based on the setpoint has the advantage that it does not have to respond to any weight fluctuation.
- the invention also encompasses those variants of the method in which the inlet gap height is dependent on the actually set actual density or the actually set
- the invention proposes that the density and / or the basis weight of the mat
- the density or basis weight of the mat is (continuously) measured continuously in front of the inlet mouth and the inlet gap height is then regulated (continuously) as a function of these measured values.
- Infeed mouth means within the scope of the invention an area in front of the
- the invention proposes a "density-guided mode of operation", ie the inlet gap height, or its permissible minimum value, is no longer (exclusively) checked taking into account the mat height of the incoming press material mat and adjusted, if necessary, but an adjustment taking into account the setpoint Density or actual density of the incoming pressed material mat or its nominal or actual weight per unit area.
- the invention is based on the recognition that the pressing process can be carried out very effectively if a strong compression already takes place in the inlet mouth and possibly even in the region of a pre-compression zone in front of the inlet plates.
- press material mats having a relatively high density and low mat height are pressed, which have been pretreated, for example, in a strong (separate) pre-press
- the inlet gap height be chosen such that a further pre-compression in the pre-compression zone is completely dispensed with. Consequently, the method according to the invention functions independently of whether working with non-pre-pressed or only slightly pre-pressed mats or with strongly pre-pressed pressed material mats.
- a misfire device usually consists of a misfed hopper arranged below the mat transport and an adjustable strip section arranged above it, so that the grit mat produced is dropped into the hopper with the hopper open and fed to the press only when the hopper is closed.
- the defective filling device will not be closed until the set inlet gap height is within the given value Way corresponds to the density or the basis weight.
- a control of the inlet gap height ie the inlet gap height is set taking into account the (determined) density or the (determined) basis weight, possibly multiple or quasi-continuously or in predetermined Time intervals or continuously.
- a "real" regulation of the inlet gap height is effected as a function of the mat density or the weight per unit area.
- the inlet gap height is determined with a suitable measuring device and fed into the control process.
- the inlet gap height is adjusted or regulated at a desired or actual basis weight or a determined desired or actual density with the proviso that the nominal density po of the mat in the range of the inlet gap does not exceed a maximum predetermined limit p ma ⁇ .
- the check or setting or regulation can - as explained - taking into account the actually determined density.
- This can z. B. by means of a belt scale, the basis weight (in kg / m 2 ) and with a height measuring device, the mat height can be determined so that then the density can be determined from these data.
- the invention is based on the recognition that in the area of the inlet gap a certain maximum density must not be exceeded.
- the run-in gap height results from the quotient of, on the one hand, (nominal) basis weight and, on the other hand, maximum mat density p max .
- This can be a real one Density measurement of the mat before entering the press be waived.
- the infeed gap height is automatically set at a certain target basis weight in consideration of the maximum denomination density input to a controller. If the nominal basis weight is changed, then an automatic adjustment of the inlet gap height takes place.
- the invention proposes that in the course of the production of OSB boards, the maximum permissible mat density in the region of the inlet gap 100 to 200 kg / m 3 , preferably 150 to 200 kg / m 3 , z. B. is about 160 kg / m 3 . Consequently, a desired value for the mat density in the region of the inlet gap is predetermined, and then the inlet gap height is set taking into account the respective weight per unit area (eg desired basis weight).
- the maximum mat density in the area of the inlet gap is z. B. 100 to 200 kg / m 3 , preferably 150 to 200 kg / m 3 , z. B. 190 kg / m 3 .
- the maximum mat density in the region of the inlet gap is preferably 200 to 350 kg / m 3 , z. B. 250 to 300 kg / m 3 .
- the invention also relates to a device for pressing pressed material mats in the course of the production of wood-based panels in a continuous press by a method of the type described.
- This device has a continuous press with press base and press upper part, in the press base and press top endlessly circulating steel press belts and with an inlet mouth on, wherein in the press base and in the press upper part in each case a heatable pressure plate or hot plate is arranged and connect to the heating plates inlet side projecting heatable inlet plates to form the inlet mouth and the steel press belts are supported on the press plates and inlet plates with the interposition of rolling rods.
- the inlet plates may possibly be preceded by a precompression zone, in which the mat is optionally precompressible to the inlet gap height.
- a device for adjusting the inlet contour of the inlet mouth and the inlet gap height is provided.
- the invention proposes that at least one mat measuring device for determining the density and / or the basis weight of the spreading material mat is arranged upstream of the continuous press.
- an inlet gap measuring device may be provided for determining the height of the inlet gap.
- the mat measuring device can be composed of a surface weight measuring device (eg belt scale) on the one hand and a height measuring device (eg one or more laser measuring devices) on the other hand, the density being determined from basis weight and height. If the mat measuring device only serves to determine the weight per unit area, then a belt scale is sufficient without further height measuring devices.
- a control / regulating device is further provided, which is connected to the mat measuring device and / or with the inlet gap measuring device and with the device for adjusting the inlet gap height and optionally the device for adjusting the inlet contour.
- FIG. 1 shows a device according to the invention for the production of wood-based panels with a continuous press
- Fig. 2 shows a detail of the apparatus of FIG. 1 and
- FIG. 3 shows a modified embodiment of the article according to FIG. 1.
- a device for pressing pressed material mats to wood-based panels is shown in fragmentary form.
- the core of such a system is a continuous press 1.
- This has in its basic structure a press base 2 and a press top 3, in the press base and press top endlessly circulating steel press belts 4, 5 and an inlet mouth 6, wherein in the press base 2 and in the press upper part 3 each one heated pressing plate or heating plate 7, 8 is arranged and to the heating plates 7, 8 on the inlet side projecting heatable inlet plates 9, 10 to form the inlet mouth 6.
- the steel press belts 4, 5 are supported on the press plates 7, 8 and inlet plates 9, 10 with the interposition of rolling rods 11. In the area of the inlet mouth 6, the rolling rods 11 are guided over rolling rod insertion wheels 12, 13.
- a device 14 for adjusting the inlet mouth or for adjusting the inlet gap height ho is provided.
- a device 15 for adjusting the inlet contour of the inlet mouth 6 and for adjusting the inlet contour of the inlet plates 9, 10 is provided.
- This device 15 for adjusting the inlet contour has a multiplicity of cylinder piston arrangements 16 which are connected in a predetermined distribution to the inlet plates and which are preferably designed as double-acting differential piston piston arrangements with which both tensile forces and compressive forces are transmitted to the highly flexible inlet plates 9, 10 to let.
- Infeed gap height h 0 in the context of the invention means either the inlet gap height in the region of the front edge of the upper and / or lower inlet plate 9, 10 or (preferably) the inlet gap height in the region of the axes A of the upper and / or lower insertion gears 12, 13 for the rolling rods 11 In practice, these two points are very close together.
- the inlet plates 9, 10 may be preceded by a Vorkompressionszone V in the inlet mouth 6, in which the Pressgutmatte M is precompressed from its Ricomatten Adjust h M to the extent of the inlet gap height ho.
- This Vorkompressionszone V is formed in the embodiment of a range of steel press belts 4, 5, which are supported in the region of the inlet mouth 6 of rollers or belt support rollers 17.
- Part of a plant for the production of wood-based panels is usually one or more scattering stations for the production of the grit mat.
- Such a spreading material mat can then be pretreated, for. B. be precompressed in a pre-press.
- the continuous press 1 is preceded by a mat measuring device 18 for determining the basis weight F M of the spreading material mat M.
- Basis weight F M of the spreading material M here means the basis weight of the material to be spread immediately before entering the continuous press 1, ie the basis weight of a scattered and optionally in a (not shown) pre-press pre-pressed grit mat.
- the measuring device 18 is designed as a belt scale.
- a control or regulating device 19 is indicated, which on the one hand with the described measuring devices 18 and on the other hand with the device 14 for adjusting the inlet gap height h 0 and optionally with the device 15 for Setting the inlet contour of the inlet mouth is connected.
- This control / regulating device can be designed as a computer.
- the device according to the invention usually has a faulty means, not shown, which has a below the strip running Fehl thoroughlyungspichter or the like, which can be opened to drop the mat and closed for transport of the mat in the direction of the press. Then there is the possibility that this controllable defective bulk means is also connected to the control and / or regulating device 19.
- the inlet gap height ho is preferably adjusted continuously or virtually continuously as a function of the determined density PM or the determined basis weight F M. If the inlet gap height h 0 is detected metrologically, a real control process can be performed.
- FIG. 3 shows schematically a plant for the production of thin wood material plates, z. B. thin MDF boards or thin chipboard.
- the scattering station is not shown. After the scattering station, a first height measurement Hi and a measurement of the basis weight with the belt scale 18 can take place.
- This belt scale 18 is now not arranged directly in front of the press inlet, but following the scattering station. This belt weigher primarily serves to control or regulate the scattering station.
- a first prepress V 1 which compresses the mat to a height h 2 .
- a further pre-pressing takes place in the area of the pre-press V 2 on a mat height h 3 .
- a determination of the height of the mat h M can take place with the aid of a height measuring device 20.
- the mat height h 0 in the region of the inlet gap is also indicated.
- the inlet gap height h 0 taking into account the setpoint specification for the mat weight F so n and taking into account a predetermined maximum value p ma ⁇ for the nominal density Po of the mat in the region of the inlet gap.
- This maximum value is stored in the controller 19 as a value X, so that the inlet gap height h 0 is set as a quotient of F so n on the one hand and X on the other hand.
- the different plant conditions can be accommodated by depositing different values X. If a certain desired basis weight is then adjusted during operation or the desired basis weight is changed, an automatic adjustment of the height h 0 is then carried out so that faultless operation is always ensured.
- the controller 19 is not shown in FIG.
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Veneer Processing And Manufacture Of Plywood (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/519,364 US8153040B2 (en) | 2006-12-16 | 2007-12-11 | Method and apparatus for pressing particle mats |
| CN2007800465346A CN101594970B (zh) | 2006-12-16 | 2007-12-11 | 用于挤压压制材料垫的方法和设备 |
| CA2672787A CA2672787C (en) | 2006-12-16 | 2007-12-11 | Method and apparatus for pressing particle mats |
| EP07847059.8A EP2089197B1 (de) | 2006-12-16 | 2007-12-11 | Verfahren zum verpressen von pressgutmatten |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006059564A DE102006059564B4 (de) | 2006-12-16 | 2006-12-16 | Verfahren und Vorrichtung zum Verpressen von Pressgutmatten |
| DE102006059564.5 | 2006-12-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2008074417A2 true WO2008074417A2 (de) | 2008-06-26 |
| WO2008074417A3 WO2008074417A3 (de) | 2008-09-12 |
Family
ID=39399746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2007/010790 Ceased WO2008074417A2 (de) | 2006-12-16 | 2007-12-11 | Verfahren und vorrichtung zum verpressen von pressgutmatten |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8153040B2 (de) |
| EP (1) | EP2089197B1 (de) |
| CN (1) | CN101594970B (de) |
| CA (1) | CA2672787C (de) |
| DE (1) | DE102006059564B4 (de) |
| WO (1) | WO2008074417A2 (de) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007063374A1 (de) * | 2007-12-30 | 2009-07-02 | Dieffenbacher Gmbh + Co. Kg | Verfahren und Vorrichtung zur Vorwärmung einer Pressgutmatte im Zuge der Herstellung von Holzwerkstoffplatten |
| CN101508128B (zh) * | 2009-03-23 | 2012-04-25 | 中国福马机械集团有限公司 | 利用连续压机压制压制品的方法和用于实施该方法的设备 |
| DE102009052413B4 (de) | 2009-11-10 | 2016-02-04 | Siempelkamp Maschinen- Und Anlagenbau Gmbh | Verfahren zum Herstellen von Holzwerkstoffplatten oder Kartonplatten |
| CN102259372A (zh) * | 2011-08-05 | 2011-11-30 | 青岛国森机械有限公司 | 一种长规格竹木集成材压制设备 |
| RU2701425C2 (ru) * | 2015-02-16 | 2019-09-26 | Роквул Интернэшнл А/С | Способ сжатия полотна из искусственных стекловидных волокон |
| CN105690498B (zh) * | 2016-04-07 | 2018-05-08 | 李和麟 | 高强度单板层积材模具 |
| IT201600093579A1 (it) | 2016-09-16 | 2018-03-16 | Sacmi | Metodo e apparato per la formatura di manufatti di polveri compattate |
| US11400676B2 (en) * | 2016-10-06 | 2022-08-02 | SWISS KRONO Tec AG | Wood material panel pressing device and method for monitoring a wood material panel pressing device |
| DE102016119837B4 (de) * | 2016-10-18 | 2018-09-06 | Siempelkamp Maschinen- Und Anlagenbau Gmbh | Verfahren zum Verpressen einer Pressgutmatte und kontinuierliche Presse |
| US11045981B2 (en) * | 2017-01-30 | 2021-06-29 | Ortho-Space Ltd. | Processing machine and methods for processing dip-molded articles |
| DE102017110199B3 (de) * | 2017-05-11 | 2018-09-13 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Rollstangeneinlaufwerk für einen Endlos-Rollstangenteppich einer kontinuierlich arbeitenden Presse, Rollstangenteppichvorrichtung, Presse und Verfahren zur Führung eines Endlos-Rollstangenteppichs |
| CN114585503B (zh) * | 2019-10-18 | 2024-11-26 | 瓦林格创新股份有限公司 | 用于制造建筑镶板的连续压制装置 |
| CN115476420A (zh) * | 2022-10-27 | 2022-12-16 | 湖南恒信新型建材有限公司 | 一种高密度纤维板生产用板坯预压机 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2444470C3 (de) | 1974-09-18 | 1978-08-17 | Carl Schenck Ag, 6100 Darmstadt | Vorrichtung zur Herstellung eines gestreuten Vlieses |
| US4038531A (en) * | 1976-05-18 | 1977-07-26 | Weyerhaeuser Company | Process control apparatus for controlling a particleboard manufacturing system |
| DE3914112A1 (de) | 1989-04-28 | 1990-10-31 | Siempelkamp Gmbh & Co | Anlage zum kontinuierlichen pressen einer pressgutmatte |
| DE3938681A1 (de) * | 1989-11-22 | 1991-05-23 | Siempelkamp Gmbh & Co | Anlage zum aufstreuen von holzwerkstoff-streugut auf ein formband |
| DE4301594C2 (de) * | 1993-01-21 | 2002-10-31 | Dieffenbacher Gmbh Maschf | Verfahren und Anlage zur Herstellung von Spanplatten |
| DE19829741C1 (de) * | 1998-07-03 | 1999-08-26 | Siempelkamp Gmbh & Co | Verfahren und Presse zum Verpressen, insbesondere kontinuierlichen Verpressen |
| DE59810212D1 (de) * | 1997-09-13 | 2003-12-24 | Siempelkamp Masch & Anlagenbau | Kontinuierliche Presse zum Verpressen von Pressgutmatten zu Pressgutplatten |
| DE10148956C5 (de) * | 2001-10-04 | 2009-04-16 | Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg | Kontinuierliche Presse zum Verpressen von Pressgutmatten zu Pressgutplatten |
| DE10214322B4 (de) * | 2002-03-28 | 2016-07-14 | Siempelkamp Maschinen- Und Anlagenbau Gmbh | Kontinuierliche Presse zum Verpressen von Pressgutmatten zu Pressgutplatten |
| DE10253657A1 (de) * | 2002-11-16 | 2004-05-27 | Maschinenfabrik J. Dieffenbacher Gmbh & Co | Sicherheitseinrichtung für eine kontinuierlich arbeitende Presse |
-
2006
- 2006-12-16 DE DE102006059564A patent/DE102006059564B4/de not_active Expired - Fee Related
-
2007
- 2007-12-11 US US12/519,364 patent/US8153040B2/en active Active
- 2007-12-11 WO PCT/EP2007/010790 patent/WO2008074417A2/de not_active Ceased
- 2007-12-11 CA CA2672787A patent/CA2672787C/en active Active
- 2007-12-11 EP EP07847059.8A patent/EP2089197B1/de active Active
- 2007-12-11 CN CN2007800465346A patent/CN101594970B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CA2672787A1 (en) | 2008-06-26 |
| CN101594970B (zh) | 2013-02-27 |
| CN101594970A (zh) | 2009-12-02 |
| DE102006059564A1 (de) | 2008-06-19 |
| DE102006059564B4 (de) | 2009-06-18 |
| US8153040B2 (en) | 2012-04-10 |
| WO2008074417A3 (de) | 2008-09-12 |
| CA2672787C (en) | 2015-10-27 |
| US20100090359A1 (en) | 2010-04-15 |
| EP2089197A2 (de) | 2009-08-19 |
| EP2089197B1 (de) | 2018-08-01 |
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