EP0800902A1 - Procédé pour fabriquer en continu d'un mât pour panneaux en bois ou en matériau similaire - Google Patents

Procédé pour fabriquer en continu d'un mât pour panneaux en bois ou en matériau similaire Download PDF

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Publication number
EP0800902A1
EP0800902A1 EP96105712A EP96105712A EP0800902A1 EP 0800902 A1 EP0800902 A1 EP 0800902A1 EP 96105712 A EP96105712 A EP 96105712A EP 96105712 A EP96105712 A EP 96105712A EP 0800902 A1 EP0800902 A1 EP 0800902A1
Authority
EP
European Patent Office
Prior art keywords
channel
spreading
roller
spreader
particles
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.)
Granted
Application number
EP96105712A
Other languages
German (de)
English (en)
Other versions
EP0800902B1 (fr
Inventor
Uwe Dr. Kunstmann
Michael Diefenbach
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.)
Dieffenbacher Schenck Panel GmbH
Original Assignee
Schenck Panel Production Systems GmbH
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 Schenck Panel Production Systems GmbH filed Critical Schenck Panel Production Systems GmbH
Priority to DE59608838T priority Critical patent/DE59608838D1/de
Priority to EP96105712A priority patent/EP0800902B1/fr
Priority to US08/833,464 priority patent/US5887515A/en
Priority to CA002202343A priority patent/CA2202343A1/fr
Publication of EP0800902A1 publication Critical patent/EP0800902A1/fr
Application granted granted Critical
Publication of EP0800902B1 publication Critical patent/EP0800902B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27NMANUFACTURE 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
    • B27N3/00Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08Moulding or pressing
    • B27N3/10Moulding of mats
    • B27N3/14Distributing or orienting the particles or fibres

Definitions

  • the invention relates to a process for the continuous production of a continuous nonwoven from stored particles of different dimensions by means of a conveyor spreading process for the production of wood-based panels or similar boards by means of subsequent pressing of the nonwoven.
  • a device is known from German Auslegeschrift 1205274, in which a strand is formed on a strand carrier (forming tape) by means of scattered wood shavings or similar scatterable particles, which strand passes continuously or in sections into a press which produces solid moldings, in particular chipboard, from it. in which the scattering particles are oriented in different directions, whereby either one or more oscillating frames or one or more special throwing rollers, or one or more whirlwind nozzles, or a combination of these or equivalent devices are provided in the way of the scattering particles from the throw point to the strand carrier which or past which the scattering particles coming from the litter point have to pass in substantially different directions for orientation.
  • the object of the present invention is to have a well-defined discharge plane for the spreading material, regardless of the speed of the spreading rollers for the conveying spreading process, so that not only no missing particles get into the spread, but also a structure which is uniform over the entire spread Rolling passing particles is reached. Defining a distance between the scattering level and the fleece level further counteracts false scattering.
  • This object is achieved according to claim 1 in that intermediate supplies are initially deliberately formed continuously during the conveying spreading process over the entire spreading width and the spreading length of the conveying spreading process, from which individual spreading processes take place for the continuous formation of the continuous nonwoven. This ensures that on the one hand both the distance between the start of the spreading and the deposit of the spreading material in the fleece is very well defined, and on the other hand that practically the same amount of particle stream to be spread is spread over the entire conveying spreading process depending on the intermediate supply.
  • the deliberate formation of the intermediate stocks over the Scattering length of the conveyor spreading process is controllable. This allows the density and thus the strength of the wood-based panel to be influenced in the longitudinal direction, for example when a nonwoven is pressed in sections to form wood-based panels.
  • An embodiment according to claim 3 of the inventive method is that the deliberate formation of the intermediate stocks can be controlled via the spread of the conveyor spreading process.
  • the density and thus the strength can also be influenced in the transverse direction of the finished wood-based panel, so that in the end a wood-based panel can be produced in which predetermined strength properties can be generated both in the longitudinal and in the transverse direction.
  • An embodiment of the method according to claim 4 is protected according to the invention according to claim 5 in such a way that the discharged particles are fed to a secondary comminution, at the end of which recyclable particles are recirculated and non-recyclable particles are eliminated.
  • a reduction in the material to be separated out is achieved on the one hand and, in addition, such material can be reused, for example when wood is used, which has a very small thickness, but in the other dimensions has a considerable surface area.
  • protection is provided according to claim 6 that, depending on the scattering of the particles provided and depending on the formation of the continuous fleece by means of a conveying scattering process, a preselectable separation of the particles takes place.
  • Predefined cross-sectional profiles through the thickness of the nonwoven can be generated solely by the separation of the particles, which is selectable according to the connection, depending on the particle flow and the throughput through the conveyor spreading process.
  • each spreader roller alternately carries several levels, first of equal length, channel-shaped depressions and for this purpose displaces several levels with second, equally long, channel-shaped depressions, that each level of the respective channel-shaped depressions is separated from the next level by webs on the surface of the surface, and that the respective first and second equally long, channel-shaped depressions in the axial direction of each spreader roller are separated by webs over the entire length of the jacket surface of the spreader roller, so that each
  • predeterminable partial quantities can be formed from the scattering particles emerging from the bunkers, and at the same time, by rotating the row of spreading rollers, effect a conveying process with which the other, separate depressions of the spreading rollers are simultaneously filled, so that the further rotation of the Spreading rollers a conveyor spreading process occurs in which essentially the same amounts of spreading material are released from the rotating spreading rollers at the same time and are deposited for storage on the continuously moving base.
  • each spreader roller carries first, equally long channel-shaped depressions arranged obliquely to its axis, that several floors are provided with second, equally long channel-shaped depressions, the channel axes of which are at an angle occupy the sloping channel axes of the first, equally long channel-shaped depressions.
  • the angle between the first and second equally long, channel-shaped depressions is greater than 0 degrees and less than 180 degrees.
  • a number of shaft-like depressions appear in the case of a plurality of rotating spreader rollers arranged one behind the other in the region of contact with the lateral surfaces, each of which is separated by webs in the direction of the longitudinal axis of the spreader rollers in the circumferential direction of the spreader rollers for the litter particles coming from the bunker are completed. Filling of the spreading shafts is facilitated by the spreading shafts which are inclined at the angle mentioned according to the invention.
  • the respective channel-shaped sections have semicircular arches at their ends on the roll shell.
  • the arrangement of semicircular arcs facilitates the hooking of scattering particles when filling and emptying the channel-shaped sections.
  • the channel-shaped sections are rounded perpendicular to the direction of the channel axis, starting from the roll shell to the channel base.
  • This configuration of the channel also promotes both the filling and the emptying of the channel-shaped sections; it also serves to facilitate squeezing of scattering particles to be conveyed further via the spreading rollers to the next spreading rollers of the conveying spreading device, which effects the conveying spreading process.
  • a further embodiment of the channel-shaped sections according to the invention consists in that the channel-shaped sections have rounded cross sections. This configuration according to the invention contributes to keeping the channel-shaped sections clean.
  • each spreader roller from at least two roller sleeves arranged one behind the other in the axial direction with the same length , channel-shaped depressions and that the webs have an uninterrupted course over the entire jacket length of the spreader roller.
  • any Spreader roller lengths can be put together from a single roller sleeve unit in the manner of a modular system without additional tooling having to be used for the production of particularly long and slender spreader rollers.
  • deflection of the spreader roller produced from roller sleeves can be countered.
  • protection is sought in claim 14 for the visible circumferential abutting edge occurring between the spreader roller sleeves not being aligned with one another in at least two spreader rollers arranged one behind the other. This ensures that there are no harmful influences on the entire row of rotating spreader rollers from the abutting edges.
  • protection is provided according to claim 15 in that visible abutting edges between the sleeves extend spirally over the surface of the individual spreader roller. This configuration also serves to avoid possible sources of error due to the abutting edges.
  • the measure to be protected according to claim 16 consists in the fact that two sleeves have an abutting edge between the sleeves, arranged outside the middle between the two roller surfaces. This represents a particularly preferred embodiment of the subject matter of the invention, with a view to avoiding the deflection of sleeve-shaped spreader rollers.
  • the distance (depth) between the surface of the spreader roller shell and the channel base of the channel-shaped sections have a different dimension from spreader roller to spreader roller. This enables additional material to be temporarily stored in the channel-shaped sections of the downstream or upstream pairs of spreading rollers via the transport path, that is to say in the region of the conveying spreading process. On the one hand, this increases the throughput in such spreading processes while the spreading quality remains the same, and on the other hand it avoids influencing the spreading quality.
  • the device protected in claim 18, which also represents an embodiment of the device according to the invention, also serves to carry out the method according to claims 1-6, if protection is provided in claim 18 that the distance (depth) between the surface of the spreader roll and Channel base of the channel-shaped sections have a different dimension over the length of the individual spreading roller.
  • This arrangement of the higher fillability transversely to the direction of progress of the nonwoven under development, which is then processed into wood-based panels or similar panels serves to produce a higher density in the edge area of these wooden-based panels, which may be necessary in later tongue and groove processing of such panels can be beneficial.
  • spreading rollers produced after use are characterized in that the surface of their jacket is subsequently subjected to a machining operation. Through the mechanical processing of the surface of the jacket, it is achieved for the first time that the spreader rollers provided for a conveyor spreader process allow for the first time a clear intermediate storage of the particle flow required for scattering, even when their roller shells are in direct contact.
  • scattered particles 2 stored in a bunker 1 are fed via a discharge 3 to a scattering station 4, the width of which corresponds to the width of a base 5 on which a chip fleece 6 is produced, which is then pressed continuously or discontinuously into wood-based panels in a press station (not shown) becomes.
  • the stored scattering particles 2 are first moved against discharge rollers 8 of the bunker 1, which also move in the direction of the arrow, and thus remove scattering particles from the bunker supply, which are fed via a shaft 9 of pre-dissolving roller 10.
  • the pre-dissolving rollers are already in the scattering station and distribute the scattering particles according to their rotation in the direction of the arrow, in the longitudinal direction of the scattering station 4.
  • a row of spreader rollers 11 is shown, of which only the first and last of the spreader rollers have been designated with the reference number 11.
  • the rest are in the exemplary embodiment 10 spreader rollers 11 which rotate clockwise like the first and last spreader roller 11, for the sake of clarity not designated by the reference number 11, at the end of this row of spreader rollers 11, which also extend over the entire width of the base 5, is a return screw 12 Arranged, which serves to collect scattering particles, which could not be passed through the spreading rollers 11 due to their size during the conveying spreading process, and to return them to the bunker 1 via suitable lines or to convey faulty material, for example lumps of glue, out of the conveying spreading process in order to pass via the return screw 12 to be eliminated.
  • all 12 spreader rollers 11 rotate in the same direction, i.e. in a clockwise direction. However, it is also possible that the spreading rollers 11 rotate in the opposite direction as a whole. For this purpose, it is then necessary that the return screw 12 is arranged at the other end of the spreading rollers 11 in order to avoid that defective material is applied to the base 5 to form the fleece 6, and thus negatively influences the outermost layer of the fleece to be pressed.
  • rollers 11 each have different speeds in order to either accelerate the conveying of the particle stream to be scattered to a fleece during the conveying scattering process, in order to achieve a higher throughput through the scattering rollers 11, or with a reduction in the Speed of the individual spreader rollers with a smaller amount of scattering particles 2 also to ensure a uniform passage of scattering material particles 2 to be scattered through the spreader rollers 11 for the production of a uniform chip fleece.
  • a chip fleece 6 is produced which, seen from the right, always forms the bottom layer of the chip fleece 6 to be pressed later, between the first and second spreading rollers 11, while the 11 and 12 scattering rollers, also seen from the right, between them place the top layer of the chip fleece 6 on the previous intermediate layers.
  • a complete chip fleece results which is formed from the lower cover layer, generated by the first and second spreading rollers, and which receives an upper cover layer which through the last two spreader rollers 11, a further spreader roller 4, not shown, which is arranged in mirror image of the spreader roller 4 and is located downstream of the spreader station 4 shown.
  • FIG. 2 a development 13 of the jacket of spreader roller sleeves 14, 15 is shown, as can be seen on the developments 13, channel-shaped depressions 16 and 17 of the same length are provided over the circumference of the spreader roller sleeves 14, 15, each of which over the length of the spreader roller sleeve Levels 18 form and each channel-shaped depression 16 of one tier 18 with each channel-shaped depression 17 of the other tier 18 with its channel axes 19 and 20 enclose an angle which, in the exemplary embodiment, is greater than 90 degrees with respect to a spreader roller axis 21 (compare, for example, FIG 4) is.
  • the control roller sleeves 14, 15 have a certain length and it is thus possible to obtain a spreader roller by lining up several such spreader roller sleeves 14, 15, in which the connection between the individual sleeves 14, 15 takes place via positioning and locking pins 22 (also compare, for example, FIG. 4 ), so that only on the two outermost spreader roller sleeves 14, 15 (see FIG. 4) bearing axles 23, 24 have to be arranged in order to store the individual spreader roller sleeves 14, 15, for example, spreader roller 11 in a storage (not shown) within the scattering station 4.
  • All spreader rollers 11 in one; Roller mill 25 shown here may be arranged.
  • the roller mill 25 itself can be raised and lowered (not shown) or tilted to the base 5 (also not shown).
  • the scattering path between the exit plane from the channel-shaped depressions 16 and 17 from all floors can be set at a predetermined height and also depending on the increase in the fleece to be pressed above fleece under construction can be arranged. This ensures that there is no change in the scattering of the channel-shaped depressions serving as intermediate storage until it strikes the base 5 or strikes the fleece layer which is already being formed.
  • FIG. 3a an enlarged section from the development 13 according to FIG. 2 has been selected in order to clarify that between the channel-shaped recesses 16 and 17 floor webs 27 and 28 are provided, and also between the channel-shaped recesses 16 and 17 webs 29 are provided are, which extend over the entire length of the spreader roller sleeves 14, 15.
  • both the webs 29 run in the longitudinal direction of the complete spreading roller without interruption and thus form a closure of the channel-shaped depressions 16 and 17 in the direction of passage for the particles; at the same time, the locking and positioning pins 22 also cause the channel-shaped depressions 16 and 17 to also have a smooth transition during the transition from one spreader roller sleeve to the next spreader roller sleeve.
  • FIG. 3b a section is shown along a channel-shaped depression 16, as can be seen from this, the ends of the channel base 30 are guided in a semicircular shape 31 to the jacket 32 of the spreading roller 11.
  • FIG. 3c which shows a section according to BB according to FIG. 3a
  • the channel-shaped depressions 16 and 17 are semicircular, and that the respective channel base 30 is at a distance 33 from the surface of the surface of the spreading roller 11.
  • the channel base 30 also has the same distance 33 from the jacket surface 32 of the spreading roller 11.
  • the spreader rollers 11 are equipped downstream with respectively widening channel-shaped depressions, it can readily be seen that a substantially higher throughput of scattering particles can be achieved through the adjoining scattering rollers without clogging or jamming during the passage of the scattering particles through the scattering rollers 11 can occur.
  • the largest channel-shaped depression is always chosen to be smaller than the parts that are not deposited and are discharged via the return screw 12. Such a size determination can be achieved in that, due to the smooth outer surface of all the spreading rollers 11, a determination of the largest particle still to be passed through can be determined.
  • FIG. 5 shows two spreader rollers 11 arranged one behind the other, in which one spreader roller consists of spreader roller sleeves 14, while the other spreader roller 11 consists of spreader roller sleeves 15 and further spreader roller sleeves 35 exists.
  • the spreader rollers 11 close to each other and abutting edges 35 and 36 are offset from one another over the length of the spreader rollers 11. This prevents scattering errors from occurring due to these abutting edges.
  • spiral abutting edges between the individual spreader roller sleeves 14, 15, 35 can also be used.
  • FIG. 4 also shows, when two spreader roller sleeves 14 and 15 are used, the abutting edge of these two spreader roller sleeves is arranged outside the center.
  • Such a combination of differently long spreader roller sleeves 14, 15 for producing a spreader roller 11 are suitable for reducing the deflection of a spreader roller which does not consist of spreader roller sleeves.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
EP96105712A 1996-04-11 1996-04-11 Procédé pour fabriquer en continu d'un mât pour panneaux en bois ou en matériau similaire Expired - Lifetime EP0800902B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE59608838T DE59608838D1 (de) 1996-04-11 1996-04-11 Verfahren zur kontinuierlichen Herstellung eines Vlieses für die Herstellung von Holzwerkstoff- oder ähnlichen Platten
EP96105712A EP0800902B1 (fr) 1996-04-11 1996-04-11 Procédé pour fabriquer en continu d'un mât pour panneaux en bois ou en matériau similaire
US08/833,464 US5887515A (en) 1996-04-11 1997-04-07 Method for the continuous production of a mat for the manufacture of boards of wood material or the like
CA002202343A CA2202343A1 (fr) 1996-04-11 1997-04-10 Methode pour la production en continu d'un mat en vue de la fabrication de panneaux de bois ou autres panneaux semblables

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96105712A EP0800902B1 (fr) 1996-04-11 1996-04-11 Procédé pour fabriquer en continu d'un mât pour panneaux en bois ou en matériau similaire

Publications (2)

Publication Number Publication Date
EP0800902A1 true EP0800902A1 (fr) 1997-10-15
EP0800902B1 EP0800902B1 (fr) 2002-03-06

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EP96105712A Expired - Lifetime EP0800902B1 (fr) 1996-04-11 1996-04-11 Procédé pour fabriquer en continu d'un mât pour panneaux en bois ou en matériau similaire

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US (1) US5887515A (fr)
EP (1) EP0800902B1 (fr)
CA (1) CA2202343A1 (fr)
DE (1) DE59608838D1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19916447A1 (de) * 1999-04-12 2000-10-19 Dieffenbacher Schenck Panel Formstation
WO2000061341A1 (fr) * 1999-04-12 2000-10-19 Dieffenbacher Schenck Panel Gmbh Poste de dispersion pour panneaux de fibres
DE10206594A1 (de) * 2002-02-15 2003-08-28 Dieffenbacher Gmbh Maschf Streustation zum Streuen von beleimten Streugütern insbesondere Holzspänen
DE102017124063A1 (de) 2017-10-16 2019-04-18 Dieffenbacher GmbH Maschinen- und Anlagenbau Streuanlage und Verfahren zur Herstellung einer Streugutmatte im Zuge der Herstellung von Werkstoffplatten

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IT1290732B1 (it) * 1997-03-12 1998-12-10 Pal Srl Dispositivo a rulli per la separazione di chips e particelle a granulometria differenziata e macchina formatrice utilizzante
DE102004008642A1 (de) * 2004-02-19 2005-09-08 Hauni Primary Gmbh Verfahren und Vorrichtung zum Entfernen von Fremdstoffen aus zu verarbeitendem Tabak
DE202009010983U1 (de) * 2009-05-07 2011-06-15 Doppstadt Familienholding GmbH, 42555 Siebmaschine, insbesondere Sternsiebmaschine
US10111385B2 (en) 2016-06-24 2018-10-30 Jackrabbit Nut harvester with separating disks
DE102016113014B4 (de) 2016-07-14 2020-03-05 Dieffenbacher GmbH Maschinen- und Anlagenbau Streuanlage und Verfahren zur Herstellung einer Streugutmatte im Zuge der Herstellung von Werkstoffplatten
DE202016103820U1 (de) 2016-07-14 2017-10-19 Dieffenbacher GmbH Maschinen- und Anlagenbau Streuanlage zur Herstellung einer Streugutmatte im Zuge der Herstellung von Werkstoffplatten
DE202017106263U1 (de) 2017-10-16 2018-10-18 Dieffenbacher GmbH Maschinen- und Anlagenbau Streuanlage zur Herstellung einer Streugutmatte im Zuge der Herstellung von Werkstoffplatten
JP6938450B2 (ja) * 2018-10-31 2021-09-22 Jx金属株式会社 原料供給装置、電子・電気機器部品屑の処理装置及び電子・電気機器部品屑の処理方法
AU2020218530A1 (en) 2019-02-08 2021-08-12 Jackrabbit, Inc. A nut harvester with a removable assembly and a method of replacing a removable assembly of a nut harvester
CN116142752A (zh) * 2022-12-19 2023-05-23 陕西中环机械有限责任公司 用于巷道内的均布式落料缓存装置

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DE19916447A1 (de) * 1999-04-12 2000-10-19 Dieffenbacher Schenck Panel Formstation
WO2000061341A1 (fr) * 1999-04-12 2000-10-19 Dieffenbacher Schenck Panel Gmbh Poste de dispersion pour panneaux de fibres
US6695605B1 (en) 1999-04-12 2004-02-24 Dieffenbacher Schenck Panel Gmbh Forming station with a compartmentalized chute
DE10206594A1 (de) * 2002-02-15 2003-08-28 Dieffenbacher Gmbh Maschf Streustation zum Streuen von beleimten Streugütern insbesondere Holzspänen
DE102017124063A1 (de) 2017-10-16 2019-04-18 Dieffenbacher GmbH Maschinen- und Anlagenbau Streuanlage und Verfahren zur Herstellung einer Streugutmatte im Zuge der Herstellung von Werkstoffplatten

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CA2202343A1 (fr) 1997-10-11
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US5887515A (en) 1999-03-30

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