WO2021001572A1 - Vorrichtung und verfahren zum transport eines vlieses - Google Patents
Vorrichtung und verfahren zum transport eines vlieses Download PDFInfo
- Publication number
- WO2021001572A1 WO2021001572A1 PCT/EP2020/068917 EP2020068917W WO2021001572A1 WO 2021001572 A1 WO2021001572 A1 WO 2021001572A1 EP 2020068917 W EP2020068917 W EP 2020068917W WO 2021001572 A1 WO2021001572 A1 WO 2021001572A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- transfer
- fleece
- belt
- transport direction
- gap
- Prior art date
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
- B27N1/00—Pretreatment of moulding material
-
- 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
- B27N1/00—Pretreatment of moulding material
- B27N1/02—Mixing the material with binding agent
- B27N1/029—Feeding; Proportioning; Controlling
-
- 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
- B27N3/16—Transporting the material from mat moulding stations to presses; Apparatus specially adapted for transporting the material or component parts therefor, e.g. cauls
-
- 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
- B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
-
- 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
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/30—Feeding material to presses
- B30B15/302—Feeding material in particulate or plastic state to moulding presses
- B30B15/308—Feeding material in particulate or plastic state to moulding presses in a continuous manner, e.g. for roller presses, screw extrusion presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/30—Belts or like endless load-carriers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G21/00—Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors
- B65G21/20—Means incorporated in, or attached to, framework or housings for guiding load-carriers, traction elements or loads supported on moving surfaces
- B65G21/2027—Suction retaining means
- B65G21/2036—Suction retaining means for retaining the load on the load-carrying surface
Definitions
- the invention relates to a device for transporting a fleece with two endlessly rotating belts, preferably in the course of the production of
- the invention further relates to a method for transporting a fleece with two endlessly rotating belts, preferably in the course of the production of
- the invention also relates to a method which is particularly suitable for special cases, such as starting up and shutting down a production line, after
- a material usually a mixture of particles or fibrous substances and a binding agent, is scattered to form a grit mat on a molding or conveyor belt, the grit mat then possibly requiring one
- the compression can be carried out continuously or discontinuously by means of pressure and heat.
- these are chipboard, fiber or chipboard panels.
- the scattering takes place in one or more layers, as required, the need for several layers usually occurring in the production of thicker panels.
- Almost all types of production have in common that, for technological reasons, at least one transition between two belts transporting the fleece is necessary before the fleece can be introduced into a press. Examples would be transitions from a forming belt to a pre-pressing or a
- Preheating tape Forming belts are usually very long and connect several spreading machines until the structure of the fleece is created. Pre-press or preheating belts require different properties such as
- Fleece areas are disposed of in a chute and, if necessary, recycled.
- a transfer gap is provided between two transporting belts, which is enlarged by a reversing belt nose in the event that a defective mat is dropped.
- Preheating of a pressed material mat has become known, which also provides a transition between two transporting belts for a fleece. This is arranged here between a forming area for creating the fleece and a microwave preheating.
- the fleece has to pass at least one transition between two endlessly circulating forming belts.
- the risk for production is that parts of the fleece could break off or fall off and in the transfer gap disappear.
- the lower or the surface can be damaged during the transition if the mat is deformed too much or sags.
- the radii of the pulleys are kept as small as possible. But this is a balance between two disadvantages. If the radius of the pulley is too small for the belt, it wears out faster. If the radius is too large, the transition is too wide and the fleece is damaged.
- the object of the present invention is to provide a device and a method with which it is possible to minimize or avoid the above-mentioned disadvantages.
- Transfer device to integrate at least one further technologically meaningful or necessary process step in the production of nonwovens or their pressing into material panels.
- the invention is based on a device for transporting a fleece with two endlessly revolving belts, which is preferably used in the course of the production of material panels from a scattered pressed material mat, a first belt and a second belt being arranged in this way in the device for transporting a fleece that the underside of the fleece is transported lying on the belts in the transport direction and a transfer gap is formed between the first and the second belt.
- the object is achieved for the device in that a transfer device for transporting the fleece in the area of the
- Transfer gap is arranged.
- the transfer device is arranged on one surface side of the fleece and the two belts for
- the invention understands the device essentially as a flat or horizontal transport in one plane, the fleece changing from one belt to the next and the transporting surfaces of the belts preferably being arranged in the same plane. Since the fleece is sensitive to kinks or bending, only a small difference in height can be overcome if the second belt is arranged higher or lower.
- This difference in height is preferably not greater than the height of the
- An endlessly revolving and permeable transfer belt with an associated vacuum device for sucking the top of the fleece through the transfer belt can preferably be arranged as the transfer device on the top side of the fleece.
- the transfer belt can be arranged to cover the transfer gap and at least partially the first belt and / or the second belt.
- Under covering is understood here according to the teaching as such that at least partially both surface sides of the
- Transfer device and a belt are accompanied or guided or In terms of the system, one or both belts overlap with the transfer device.
- the first belt and the second belt could be arranged for transport in the same or in a different transport plane.
- the drives for the belts and the transfer belt could preferably be arranged in a synchronized manner for a uniform speed in the transport direction, preferably via a control device.
- Control device may be provided in the overall system control or even in the device itself as a direct control device for the device and / or for implementing the method or a program sequence.
- a spray device for wetting the underside and / or the upper side of the fleece, preferably with water, can be arranged before, after and / or in the transfer gap.
- a heating device preferably a pneumatic heating device with steam and / or hot air, for the fleece can also be arranged in the transfer gap or within one of the endlessly circulating transporting belts.
- Transfer belt and / or means for separating the fleece from the corresponding belt are arranged in the transfer gap itself, these means preferably being vibration and / or compressed air devices.
- the transfer device and / or the vacuum device can be arranged so as to be movable in their distance from the belts and / or in or against the transport direction.
- the vacuum device can be divided transversely and / or longitudinally to the transport direction into differentially adjustable vacuum zones, these
- Vacuum zones are preferably movable in and / or against the transport direction. Most preferably these can be moved independently of one another.
- the contact surface of the vacuum device with the transfer belt can be arranged flat, arched and / or concave in or across the transport direction.
- the transfer belt with the fleece or the fleece quality can be arranged, preferably before and / or after the transfer device or in the transfer gap.
- the solution to the problem for a method contains a multitude of features worth combining, which alone or in any combination with one another can improve the device and the method according to the teaching of the invention.
- the solution for the method for transporting a fleece with two endlessly revolving belts, preferably in the course of the production of material panels from a scattered pressed material mat, consists in the fact that one
- Transfer device transports the fleece in the area of the transfer gap.
- the top of the fleece is through a
- Vacuum device held on an endlessly revolving and permeable transfer belt at least in the area of the transfer gap;
- the fleece is preferably sucked while lying on the first belt and / or over the second belt;
- the fleece is transferred from the first belt to the second belt in the same or a different transport plane
- the bottom and / or the top of the fleece are wetted, preferably with water;
- the fleece is actively separated from the corresponding belt, preferably vibration and / or
- Compressed air devices are used for active separation
- the fleece is on Foreign bodies checked
- the fleece is transferred to a
- the fleece is compressed, preferably in front of the transfer area
- the transfer device After determining foreign bodies, the transfer device
- the transfer device and / or the vacuum device can be moved in their distance from the belts and / or in or against the transport direction depending on the operating state.
- the vacuum device can be divided transversely and / or longitudinally to the transport direction into differentially adjustable vacuum zones, these
- Vacuum zones can preferably be moved in and / or against the transport direction, most preferably independently of one another.
- the contact surface of the vacuum device can guide the transfer belt flat, curved and / or concave in or across the transport direction.
- Transfer belt with the fleece or the fleece quality preferably before and / or after the transfer device or in the transfer gap, monitored.
- the task for starting and stopping a production is achieved as follows:
- the fleece lying with its lower surface side on the first belt (3) is on the upper surface side in the transport direction (10) with the
- the transfer belt is held and transported over the second belt and after reaching the second belt, the vacuum on the fleece is reduced until the fleece comes to rest on the second belt and the transfer belt can lift off the surface of the fleece.
- the distance to build up the negative pressure on the first belt can be extended
- Transfer device and / or the vacuum device are moved against the transport direction and / or to reinforce the
- the transfer device and / or the first belt are moved towards each other, with the transfer device and / or the vacuum device being moved again in the transport direction once the fleece has sufficiently adhered to the transfer belt,
- the negative pressure in the transfer device can be switched off and at the same time the transfer device and / or the negative pressure device can be moved against the transport direction.
- the vacuum device can be switched on or off in and / or transversely to the transport direction in sections depending on the occupancy of the transfer belt with fleece.
- Compensate for fleas differences between a first and a second band may be particularly useful if the entire molding strand for the lowering position of the pressed material mat is arranged on one level and a change in the transport level appears to be necessary for certain applications. This may be necessary if the transfer belt for transferring the fleece to a press reaches its limits with regard to its height adjustability or if the center of the fleece is to be adjusted by its transport plane when it is preheated with a microwave. It is now advantageously possible in an inventive
- Transfer device to integrate at least one further technologically meaningful or necessary process step or a corresponding device in the production of nonwovens or their pressing to form material panels.
- a possible process step or device could be:
- the transfer device and / or the vacuum device are designed to be movable in height or parallel to the fleece.
- the transfer device and / or the vacuum device are adjustable in height, preferably different heights can be set on the inlet / outlet side. Different geometries can preferably be set, e.g. a narrowing gap or an opening gap.
- the vacuum device can be across the width in height
- the transfer belt is reversible, or forwards and backwards
- the vacuum zone of the negative pressure device can be divided into several zones, which can be switched on / off individually as well as switched to atmosphere and / or subjected to overpressure.
- the vacuum zone of the vacuum device can consist of two or more units which can be moved independently of one another.
- Monitoring devices for the detection of product breaks can be arranged. This is used to detect missing fleece in the inlet or a doubling of the fleece because the fleece has only partially detached from the transfer belt.
- the transfer device and / or the vacuum device can
- the vacuum device or its effectiveness can be varied in width and length by devices (e.g. metal sheets).
- the vacuum box can be designed to be infinitely variable in width and length (adjust dimensions).
- the running surface of the vacuum box can be longitudinal and / or
- Transverse direction be flat and / or arched and / or concave (sealing effect or compensation for loss of density in the edge area).
- the speed of the vacuum belt can be independent of the
- the vacuum belt unit can rest on the product both without pressure and with active pressure.
- a device for removing the product and / or cleaning the belt for example
- a release agent application device In the inlet area of the vacuum belt there can be a release agent application device to minimize buildup on the vacuum belt or to apply release agent for the pressing.
- the previous transfer roller or belt nose can be designed to be rigid or movable. (e.g. protection of the molding belt in the event of a molding strand stop)
- the pulleys of the belts can be moved in height at the transfer gap.
- a cleaning unit e.g. suction funnel and / or cleaning brush
- suction funnel and / or cleaning brush can be present in the inlet area as a reject or
- the transfer belt can be equipped in the edge area with additional static and / or concurrent sealing devices, eg a circumferential sealing collar.
- Figure 1 is a schematic side view of the invention
- FIG. 2 shows the view according to FIG. 1 with the transport of a fleece in FIG.
- FIG. 3 shows the view according to FIG. 1 or 2 while the fleece is being thrown into the collecting device.
- the drawing shows a device according to the invention for transporting a fleece 1 along a transport direction 10.
- the same reference numerals designate the same device features, each figure corresponds to a different possible embodiment and show separate operating states such as idle (Figure 1), normal operation (Figure 2) and exceptional operation (Figure 3).
- FIG 1 a device for transporting a fleece with two endlessly revolving belts 3, 4 without the fleece to be transported is shown in a schematic side view.
- the belts 3 and 4 are essentially in one plane and form a transfer gap 9 between them, through which the fleece must be transported.
- the transfer gap 9 can be made as small as possible and the illustrated collecting device 8 is only an optional possibility of incorporating a further method step into the transfer area.
- the invention is preferably used in order to overcome short transitions gently for the fleece 1.
- the transfer belt is at least in
- the transport plane is preferably understood to mean the plane in which the underside 12 of the fleece 1 is guided.
- a heating device 15 can be arranged, which is preferably arranged inside the first belt 3.
- the belt 3 can be made permeable for the injection of thermal elements such as steam or hot air.
- Means for separating 7 the fleece 1 from the belts 3, 4 or the transfer belt 5 can also be arranged. These would be vibration devices or compressed air nozzles, for example. These can act not only passively but also actively, for example, be arranged in the transfer gap 9 itself. Instead of or with the
- a fleece with its upper side 11 and lower side 12 is passed through the device and is lifted off the belt 3 by means of the vacuum device 6, which can act through the permeable transfer belt 5, and is transported floating over the transfer gap 9.
- the fleece 1 is transferred from the transfer belt 5 to the second belt 4 and, if necessary, detached from the transfer belt 5 with the means for separating 7.
- the transfer belt 5 is then in a
- a prepress 17 is arranged which compresses the fleece 1 before it is lifted off the belt 3 so that it can be transported more gently.
- the fleece can be thrown into a collecting device 8 in order to either be disposed of or used again later.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
- Nonwoven Fabrics (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20739597.1A EP3993974A1 (de) | 2019-07-04 | 2020-07-04 | Vorrichtung und verfahren zum transport eines vlieses |
CN202080048633.3A CN114096387B (zh) | 2019-07-04 | 2020-07-04 | 用于运送料毡的设备和方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019118177.1 | 2019-07-04 | ||
DE102019118177 | 2019-07-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021001572A1 true WO2021001572A1 (de) | 2021-01-07 |
Family
ID=71579560
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2020/068917 WO2021001572A1 (de) | 2019-07-04 | 2020-07-04 | Vorrichtung und verfahren zum transport eines vlieses |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3993974A1 (zh) |
CN (1) | CN114096387B (zh) |
DE (1) | DE102020117687A1 (zh) |
WO (1) | WO2021001572A1 (zh) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10024543A1 (de) * | 2000-05-18 | 2001-11-22 | Dieffenbacher Gmbh Maschf | Verfahren und Anlage zur kontinuierlichen Herstellung einer Mehrschichtplatte |
EP1223135A1 (de) * | 2001-01-16 | 2002-07-17 | Fleissner GmbH & Co. Maschinenfabrik | Verfahren und Vorrichtung zum Transport eines Vlieses zwischen zwei mit Abstand voneinander angeordneten Walzen |
EP2247418B1 (de) | 2007-12-30 | 2013-05-22 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Verfahren und vorrichtung zur vorwärmung einer pressgutmatte im zuge der herstellung von holzwerkstoffplatten |
EP1782933B1 (de) | 2005-11-03 | 2015-04-01 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Verfahren und Anlage zur Herstellung von Werkstoffplatten mit einer kontinuierlich arbeitenden Presse |
DE102016109958A1 (de) * | 2016-05-31 | 2017-11-30 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Anlage und Verfahren zum Betreiben einer Anlage zur Herstellung von Werkstoffplatten |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19744284A1 (de) * | 1997-10-07 | 1999-04-08 | Dieffenbacher Maschinenfabrik | Verfahren und Vorrichtung zur Beschickung und Entleerung einer Kurztakt- bzw. Beschichtungspresse |
DE102005016408A1 (de) * | 2005-04-08 | 2006-10-12 | Dieffenbacher Gmbh + Co. Kg | Verfahren zur kontinuierlichen Vorwärmung eines Vlieses oder einer Matte und Vorrichtung zur Durchführung des Verfahrens |
DE102006062627A1 (de) * | 2006-12-30 | 2008-07-03 | Dieffenbacher Gmbh + Co. Kg | Vorpresse zur Vorverdichtung und Entlüftung einer Pressgutmatte im Zuge der Herstellung von Werkstoffplatten |
CN205950952U (zh) * | 2016-08-29 | 2017-02-15 | 江苏汇洋木业股份有限公司 | 密度板全自动预压成型设备 |
CN208020438U (zh) * | 2018-04-09 | 2018-10-30 | 成都光禾木业有限公司 | 一种纤维板板坯预热装置 |
-
2020
- 2020-07-04 EP EP20739597.1A patent/EP3993974A1/de active Pending
- 2020-07-04 CN CN202080048633.3A patent/CN114096387B/zh active Active
- 2020-07-04 WO PCT/EP2020/068917 patent/WO2021001572A1/de unknown
- 2020-07-04 DE DE102020117687.2A patent/DE102020117687A1/de active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10024543A1 (de) * | 2000-05-18 | 2001-11-22 | Dieffenbacher Gmbh Maschf | Verfahren und Anlage zur kontinuierlichen Herstellung einer Mehrschichtplatte |
EP1223135A1 (de) * | 2001-01-16 | 2002-07-17 | Fleissner GmbH & Co. Maschinenfabrik | Verfahren und Vorrichtung zum Transport eines Vlieses zwischen zwei mit Abstand voneinander angeordneten Walzen |
EP1782933B1 (de) | 2005-11-03 | 2015-04-01 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Verfahren und Anlage zur Herstellung von Werkstoffplatten mit einer kontinuierlich arbeitenden Presse |
EP2247418B1 (de) | 2007-12-30 | 2013-05-22 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Verfahren und vorrichtung zur vorwärmung einer pressgutmatte im zuge der herstellung von holzwerkstoffplatten |
DE102016109958A1 (de) * | 2016-05-31 | 2017-11-30 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Anlage und Verfahren zum Betreiben einer Anlage zur Herstellung von Werkstoffplatten |
Also Published As
Publication number | Publication date |
---|---|
EP3993974A1 (de) | 2022-05-11 |
CN114096387A (zh) | 2022-02-25 |
CN114096387B (zh) | 2023-07-14 |
DE102020117687A1 (de) | 2021-01-07 |
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