EP0292581B1 - Méthode pour répandre une nappe de copeaux - Google Patents
Méthode pour répandre une nappe de copeaux Download PDFInfo
- Publication number
- EP0292581B1 EP0292581B1 EP87107526A EP87107526A EP0292581B1 EP 0292581 B1 EP0292581 B1 EP 0292581B1 EP 87107526 A EP87107526 A EP 87107526A EP 87107526 A EP87107526 A EP 87107526A EP 0292581 B1 EP0292581 B1 EP 0292581B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mat
- width
- supply
- felt
- rakes
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000000835 fiber Substances 0.000 title abstract 4
- 238000009826 distribution Methods 0.000 claims abstract description 31
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 239000013590 bulk material Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 238000003892 spreading Methods 0.000 description 5
- 239000011093 chipboard Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000013072 incoming material Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
-
- 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
- B27N3/146—Controlling mat weight distribution
Definitions
- the content of the invention is a method for controlling a transverse distribution for a chip fleece in which, based on a chip supply, a chip-air mixture is formed as a stream of chips, which is deposited in the width of the fleece on a base which is moved past under the chip supply.
- the European patent application EP-A 69 162 has disclosed a method for influencing the density distribution of a chip fleece to be scattered and a device for this purpose, which is characterized in that at least one partial stream over a part of its width corresponds to a predetermined density distribution Partial quantity is removed.
- Partial quantity is removed.
- European patent 0 109 456 has disclosed a method and a device for equalizing the density distribution in a synthetic wood panel, in which, depending on the weight distribution of the bulk material discharged from a supply measured over a discharge cross-section, a separation command for those present in the corresponding partial cross-sections is issued by one predetermined target density distribution deviating weight quantity of the bulk material is formed for their separation.
- a separation command for those present in the corresponding partial cross-sections is issued by one predetermined target density distribution deviating weight quantity of the bulk material is formed for their separation.
- EP-A 230 483 discloses a method for controlling a transverse distribution for a chip fleece, which is based on a chip flow which is formed in Fleece width is deposited on a mat that is moved past under the chip supply, in which the chip flow is divided into two partial streams, the direction of flow of the other partial stream runs in the opposite direction, and in which the K partial stream is located at a plurality of removal points distributed over the fleece width, which are in one area are arranged laterally and at the lower end of a strand of transfer rollers, partial quantities can be removed in accordance with a uniform or predetermined fleece height distribution over the fleece width.
- the present invention is also based on the object of eliminating errors which are caused by discharge elements in the transverse distribution of the chip fleece and of carrying out a control and control of the transverse distribution.
- the solution to the object according to the present application differs by the following procedural features: the chip flow is initially divided into two partial flows, in which each partial flow is subsequently made up of bars arranged in a cascade-shaped manner and obliquely to the vertical plane running transversely to the fleece direction existing rakes are divided into further partial streams that mix again, and partial quantities are taken from a further partial stream at the lower end of a cascade.
- the errors caused by the removal devices are eliminated by dividing the spreading material removed from the supply over the entire spreading width and by changing the direction of the individual particles. There is a quasi-uniform alignment of chip particles that fall unevenly into a cascade. This allows correct removal from the uniform chip veil to be carried out via the predetermined fleece distribution curve when the fleece is deposited.
- German published patent application 2 942 163 discloses a method and a device for dividing a conveying flow, which is characterized in that the conveying flow is continuously fed to a flow divider and the continuous partial flows along the flow divider and several are continuously conveyed through the flow divider.
- chip quantities supplied to this current divider are exactly divided, but this also means that the distribution errors present in the spreading material are passed on via a distribution chute.
- the object on which the invention is based is achieved on the basis of the state of the art which has become so well known by the characterizing features of claim 2.
- a receiving device provided with closable openings is provided in the area of the last cascade; a beam of light emitted by a light source strikes the chip fleece across its width across the direction of progress; a video camera records this light beam and passes this information on to a computer in which control information for the recording device is provided be tested.
- Such a device produces a chip fleece that is completely uniform across the width on a base. It is assumed here that the bulk density is constant when using uniform material with the same bed height. If a predetermined bulk height, which is comparable to a predetermined bulk density, is to be generated and controlled, this is also achieved by the characterizing features of claim 2.
- a conveyor device is provided in the receiving device. This makes it possible, according to the invention, on the one hand, to transport back the partial quantity present in the receiving device or, according to the invention, to distribute it evenly over the spreading width and by arranging a weir which extends over the entire width of the fleece, a uniform application of a fleece layer either below the fleece to be built up or onto it put on the fleece.
- At least one spreader roller is additionally provided under the last cascade. This ensures that the chips are easily separated in the transition area to the cover layers. In addition, braking and flattening of the chips is supported at the same time.
- the receiving device has closable openings separated by webs, which can be displaced with respect to one another transversely to the nonwoven direction with the rake interacting with them.
- the webs of the receiving device are designed as rakes.
- a particularly advantageous embodiment consists in that two rakes provided one above the other and above the receiving device can be displaced relative to one another transversely to the fleece direction. This arrangement allows the opening width into the receiving device to be regulated in the simplest form, which inevitably leads to a regulation of the receiving amount.
- a device is proposed according to the invention in which the light lines recorded over a length of the fleece are stored in the computer over the width of the fleece and then the surface of the plate is displayed in a color grid assigned to the height layers on a monitor.
- the nonwoven surface changes, it is proposed that not one but several light lines are emitted over the entire width of the nonwoven. This ensures that changes in fleece height can also be recorded by the same camera when the video camera is stationary.
- FIG. 1 bulk material 2 to be scattered from a chip supply (not shown) via a rake-like dividing device I for the production of chipboard, waverboard and OSB boards is fed via a distribution chute 3 to the rake pairs 5, 6, 7 located in a housing 4.
- the rake pairs each consist of rods of the same length that extend over the width of the fleece and are spaced from one another and are preferably attached to cross rods 8 with one end each.
- the cross bars 8 also extend over the entire width of the housing 4, which is adapted to the fleece width.
- the number shown in FIG. 1 and the inclination of the rakes represent only one exemplary embodiment.
- the computing pair 5 forms the first cascade
- the computing pairs 6 and 7 form the second cascade.
- the inclination of the pairs of rakes to one another is initiated via the cross bars 8 from outside the housing 4.
- two spreader rollers 9 are arranged below the last cascade. These are used to change and brake the evenly distributed material in its direction of fall and / or to achieve a simple separation of the chip material if a chipboard or an OSB board is produced from several chip layers and the present device, for example for the production of the Middle class is used.
- such dissolving devices as described in FIG. I can be arranged one behind the other, the first and third housings, for example in the production of three-layer boards, having no spreader rollers 9, while the second housing is on its outlet has 10 spreader rollers 9.
- a pick-up device 11 is also provided on a rake of the pair of rakes 7, by means of which too much scattered material is picked up.
- the function of this receiving device is explained in more detail in connection with FIG. 2.
- the arrangement of the receiving device according to FIG. I in front of the rake which is the most downstream in the direction of the fleece which is built up on a base only sets
- the receiving device II can also be located behind the rake which is the most upstream in the direction of the fleece which is built up on a base (fleece direction), in this case the left rake of the pair of rakes 8.
- a fleece holding device 12 is shown below the housing 4, which extends over the entire spreading width.
- the fleece receiving device 12 can be a conveyor belt that extends over the width of the chip fleece or overlapping flexible or rigid underlays or a combination of such fleece carriers.
- the fleece receiving device 12 moves in the direction of an arrow 13, so that the final fleece height 14 for the fleece formed under this housing is reached at the left end of the housing 4.
- the course of the fleece height over the width of a scattered fleece is represented by a first monitor 21 connected to the computer 18, and the height layers are shown on a second monitor 22 in a grid over the length of a finished chipboard.
- nonwoven surfaces can be recorded with a fixed video camera which differ significantly in height without the scattering accuracy being reduced thereby .
- the bulk material 2 falling into the housing 4 according to FIG. 2 via a rake-like dividing device I is divided up via the distribution chute 3.
- the errors of the part of the non-redirected bulk material 2 will remain until the end of the distribution chute. If a partial stream 25 thus provided with errors strikes the computing pair 5, this is resolved into a further partial stream 26 and the previous partial stream 25 by the right computing unit of the computing pair 5.
- the further partial stream 26 divides again on the left rake of the computing pair 7, so that any irregularities present on the distribution chute 3 are thereby compensated.
- the partial flow 25, which could still have distribution errors from the distribution chute 3, will come into the area of the receiving device II, which also extends over the entire later fleece width.
- the partial stream 25 is also divided here.
- the distribution error arriving via the distribution chute 3 has already become so small that this error can be regarded as practically balanced .
- higher accuracy it is possible at any time to add further cascade levels depending on the required accuracy.
- openings 27 of the receiving device are opened more or less according to a double arrow 28, so that the excess quantity of bulk material discharged from the supply (not shown) can flow into the receiving device II.
- a distribution screw 29 is provided in the receiving device II, through which the incoming material can be transported away. Instead of returning the excess bulk material to the supply, a conveyor device (99), which is moved back and forth perpendicularly to the image plane, can serve, as shown in more detail in FIG. 3, to even out excess bulk material 30 within the receiving device. If the receiving device II has an overflow edge 31 in its lower part, the overpoured material 30 will thereby emerge and, depending on the arrangement of the receiving device, be placed downstream or upstream in the area of the last cascade as a nonwoven underlay or as a nonwoven underlay.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Textile Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Pens And Brushes (AREA)
- Dental Preparations (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Collation Of Sheets And Webs (AREA)
- Control Of Conveyors (AREA)
- Nonwoven Fabrics (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Claims (9)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP87107526A EP0292581B1 (fr) | 1987-05-23 | 1987-05-23 | Méthode pour répandre une nappe de copeaux |
AT87107526T ATE58325T1 (de) | 1987-05-23 | 1987-05-23 | Verfahren zum streuen eines spaenevlieses. |
DE8787107526T DE3766247D1 (de) | 1987-05-23 | 1987-05-23 | Verfahren zum streuen eines spaenevlieses. |
US07/191,041 US4931243A (en) | 1987-05-23 | 1988-05-06 | Process and apparatus for spreading a chip web |
CA000566410A CA1300552C (fr) | 1987-05-23 | 1988-05-10 | Procede de dechargement de copeaux sur une bande continue et appareil connexe |
FI882166A FI85959C (fi) | 1987-05-23 | 1988-05-10 | Foerfarande foer att utstroe en spaonmatta. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP87107526A EP0292581B1 (fr) | 1987-05-23 | 1987-05-23 | Méthode pour répandre une nappe de copeaux |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0292581A1 EP0292581A1 (fr) | 1988-11-30 |
EP0292581B1 true EP0292581B1 (fr) | 1990-11-14 |
Family
ID=8197020
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87107526A Expired - Lifetime EP0292581B1 (fr) | 1987-05-23 | 1987-05-23 | Méthode pour répandre une nappe de copeaux |
Country Status (6)
Country | Link |
---|---|
US (1) | US4931243A (fr) |
EP (1) | EP0292581B1 (fr) |
AT (1) | ATE58325T1 (fr) |
CA (1) | CA1300552C (fr) |
DE (1) | DE3766247D1 (fr) |
FI (1) | FI85959C (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005035214A1 (fr) * | 2003-09-17 | 2005-04-21 | Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg | Reservoir a materiau d'epandage comprenant un dispositif de deversement pour epandre le materiau d'epandage |
DE102018112166A1 (de) * | 2018-05-22 | 2019-11-28 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Vorrichtung und Verfahren zur Streuung eines Vlieses auf einem Formband |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH681990A5 (fr) * | 1989-04-14 | 1993-06-30 | Matec Holding | |
DE4117252A1 (de) * | 1991-05-27 | 1992-12-03 | Winkler Duennebier Kg Masch | Vorrichtung zum aufloesen von flockenverklumpungen |
ES2118444T3 (es) * | 1993-10-19 | 1998-09-16 | Procter & Gamble | Metodo y aparato para formar una corriente intermitente de particulas para aplicacion a una banda fibrosa. |
EP0800901B1 (fr) * | 1996-04-10 | 2003-07-02 | Dieffenbacher Schenck Panel GmbH | Procédé et appareil pour fabriquer un mat |
DE19916447A1 (de) | 1999-04-12 | 2000-10-19 | Dieffenbacher Schenck Panel | Formstation |
CA2389516C (fr) * | 1999-11-17 | 2009-10-27 | Alexanderwerk Ag | Installation de compactage de materiaux en vrac |
DE10101380B4 (de) * | 2001-01-13 | 2008-12-24 | Dieffenbacher Gmbh + Co. Kg | Sichterbeschickungungsstrecke bei Anlagen zur Herstellung von Holzfaserplatten |
DE10224497A1 (de) * | 2002-05-31 | 2003-12-11 | Dieffenbacher Gmbh Maschf | Vorrichtung zur Längsorientierung von länglichen Holzspänen |
DE10230606B4 (de) | 2002-07-08 | 2016-09-08 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Vorrichtung zur Längsorientierung von länglichen Holzspänen |
DE102005062953B4 (de) * | 2005-12-29 | 2008-07-03 | Glunz Ag | Verfahren und Vorrichtung zur Herstellung von Formkörpern, insbesondere Platten, aus Lignocellulose haltigen Fasern mit Faseranalyse |
DE102006047002A1 (de) * | 2006-10-02 | 2008-04-03 | Dieffenbacher Gmbh + Co. Kg | Verfahren, Vorrichtung und Anlage zum Feststellen und Ausscheiden von Unregelmäßigkeiten aus einem bewegten Materialstrom im Zuge der Herstellung von Werkstoffplatten |
DE102010001649A1 (de) * | 2010-02-05 | 2011-08-11 | Dieffenbacher GmbH + Co. KG, 75031 | Verfahren und Anlage zur Herstellung einer Streugutmatte aus zumindest einer gestreuten Schicht und eine Streugutmatte zur Verpressung in einer Presse im Zuge der Herstellung von Holzwerkstoffplatten (L) |
DE102010001650A1 (de) * | 2010-02-05 | 2011-08-11 | Dieffenbacher GmbH + Co. KG, 75031 | Verfahren und Anlage zur Herstellung einer Streugutmatte aus zumindest einer gestreuten Schicht und eine Streugutmatte zur Verpressung in einer Presse im Zuge der Herstellung von Holzwerkstoffplatten (S) |
CN104988663B (zh) * | 2015-07-03 | 2017-10-03 | 苏州宝丽洁纳米材料科技股份有限公司 | 一种无纺布纤维流向监测装置 |
EP3305513B1 (fr) * | 2016-10-06 | 2019-09-25 | SWISS KRONO Tec AG | Presse pour panneaux en matériaux dérivés du bois et procédé de surveillance d'une telle presse pour panneaux en matériaux dérivés du bois |
DE202018102823U1 (de) | 2018-05-22 | 2019-08-26 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Vorrichtung zur Streuung eines Vlieses auf einem Formband |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR984650A (fr) * | 1949-04-08 | 1951-07-09 | Appareil pour saupoudrer des produits pulvérulents dans la fabrication de matériaux de construction | |
CH352129A (de) * | 1956-06-27 | 1961-02-15 | Loedige Wilhelm | Vorrichtung zum Herstellen von gepressten Platten aus faserigen Stoffen |
US2943365A (en) * | 1956-12-03 | 1960-07-05 | Schubert | Felting apparatus |
AT294407B (de) * | 1969-05-20 | 1971-11-25 | Teutoburger Sperrholzwerk Geor | Verfahren zur Herstellung von mit Deckschichten versehenen Spanplatten sowie Vorrichtung zur Durchführung dieses Verfahrens |
DE2444470C3 (de) * | 1974-09-18 | 1978-08-17 | Carl Schenck Ag, 6100 Darmstadt | Vorrichtung zur Herstellung eines gestreuten Vlieses |
DE2942163A1 (de) * | 1979-10-18 | 1981-04-30 | Carl Schenck Ag, 6100 Darmstadt | Verfahren und vorrichtung zum aufteilen eines foerderstromes |
US4353686A (en) * | 1981-01-19 | 1982-10-12 | Formica Corporation | Apparatus for air-layer fibrous webs |
DE3109151A1 (de) * | 1981-03-11 | 1982-10-14 | G. Siempelkamp Gmbh & Co, 4150 Krefeld | "vorrichtung zum aufstreuen von spanplatten-streugut auf ein formband" |
DE3170270D1 (en) * | 1981-07-04 | 1985-06-05 | Schenck Ag Carl | Method and apparatus for controlling the density distribution of a dispersed particle mat |
EP0109456B1 (fr) * | 1982-11-20 | 1986-09-03 | Carl Schenck Ag | Procédé et dispositif pour égaliser la distribution de densité dans un panneau de bois artificiel |
EP0230483B1 (fr) * | 1986-01-20 | 1990-03-28 | Carl Schenck Ag | Procédé pour uniformiser des particules de dispersion et machine pour exécuter ce procédé |
-
1987
- 1987-05-23 EP EP87107526A patent/EP0292581B1/fr not_active Expired - Lifetime
- 1987-05-23 AT AT87107526T patent/ATE58325T1/de not_active IP Right Cessation
- 1987-05-23 DE DE8787107526T patent/DE3766247D1/de not_active Expired - Lifetime
-
1988
- 1988-05-06 US US07/191,041 patent/US4931243A/en not_active Expired - Lifetime
- 1988-05-10 CA CA000566410A patent/CA1300552C/fr not_active Expired - Fee Related
- 1988-05-10 FI FI882166A patent/FI85959C/fi not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005035214A1 (fr) * | 2003-09-17 | 2005-04-21 | Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg | Reservoir a materiau d'epandage comprenant un dispositif de deversement pour epandre le materiau d'epandage |
DE102018112166A1 (de) * | 2018-05-22 | 2019-11-28 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Vorrichtung und Verfahren zur Streuung eines Vlieses auf einem Formband |
Also Published As
Publication number | Publication date |
---|---|
EP0292581A1 (fr) | 1988-11-30 |
ATE58325T1 (de) | 1990-11-15 |
FI882166A (fi) | 1988-11-24 |
FI85959C (fi) | 1992-06-25 |
DE3766247D1 (de) | 1990-12-20 |
FI85959B (fi) | 1992-03-13 |
FI882166A0 (fi) | 1988-05-10 |
US4931243A (en) | 1990-06-05 |
CA1300552C (fr) | 1992-05-12 |
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