EP0638401B1 - Method and device for profile extruding, especially tube extruding a mixture of plant particles with binding agents - Google Patents
Method and device for profile extruding, especially tube extruding a mixture of plant particles with binding agents Download PDFInfo
- Publication number
- EP0638401B1 EP0638401B1 EP94113635A EP94113635A EP0638401B1 EP 0638401 B1 EP0638401 B1 EP 0638401B1 EP 94113635 A EP94113635 A EP 94113635A EP 94113635 A EP94113635 A EP 94113635A EP 0638401 B1 EP0638401 B1 EP 0638401B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- extruding
- pressing
- mixture
- compression
- length
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/22—Extrusion presses; Dies therefor
- B30B11/26—Extrusion presses; Dies therefor using press rams
-
- 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
- B27N3/28—Moulding or pressing characterised by using extrusion presses
-
- 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
- B27N5/00—Manufacture of non-flat articles
- B27N5/02—Hollow articles
Definitions
- the invention relates to a method and an apparatus for extruding or extruding a mixture of small plant parts, in particular small wooden parts with binders, in which the mixture is compressed by the ram of an extruder in a filling chamber and solidified in a curing channel.
- the batch should be transferred in a felting state by means of an extended stroke of 400 to 800 mm and a feed speed of the extrusion die of 0.04 to 1.5 m / s, which should result in increased strength of the strand.
- the parts of the batch lie with one of their large areas parallel to the lower boundary wall of the filling chamber. During the compression process, they try to fold parallel to the end face of the extrusion die. However, a larger volume of the filling space would be necessary for this transfer.
- the closing slide which closes the filling chamber during the compression process, does not make it possible to increase the volume by moving parts of the batch into the filling chamber.
- the volume of the press ram becomes smaller and smaller until the final compression is achieved. As a result, the parts of the batch can only partially change their original position and become entangled when they are compressed. This happens regardless of the feed rate of the ram.
- the mixture of small plant parts does not behave like a liquid when compacted, which distributes the pressure evenly on all sides, but rather the pressure acting on the parallel boundary walls that delimit the filling space, as well as the compression, the weights and the specific weight of the strand part produced with the compression stroke of the extrusion stamp on the end face of the extrusion stamp is greatest and takes to the front end of the pressed strand part, which adjoins the strand part generated in the previous compression stroke.
- the lower compressed start of the next strand part follows the higher compressed end of a strand part produced with each press stroke.
- the invention has for its object to provide a method for extruding a mixture of small plant parts with binders, the product obtained being as homogeneous as possible over the entire length and thus withstanding a higher load and thus load-bearing components such as beams can be produced and only as much batch is compressed as is necessary to achieve the necessary strength.
- the invention is based on the knowledge that the greater the difference in compression of the strand parts at their ends or over their length, the smaller the breaking strength (bending strength) of a strand, and that the greater the difference in compression, the longer the compression stroke and thus the strand section generated.
- the angle of the wedge-shaped extension is determined by the profile of the strand, the length of the filling space and the size of the compression.
- part of the pressing force of the extrusion die is transferred to the boundary walls during compression.
- the part of the pressing force acting on the boundary walls is greatest at the end of the extrusion die and at the other end it is the least. Since the structure of the parts of the batch is largely preserved during compression, only a certain part of the parts of the batch want to avoid crosswise to the pressing direction. The material therefore does not flow through the smallest slits, as in metal extrusion, for example, when compacting.
- the filling space is designed to widen in a wedge shape, the parts of the batch at the end of the hardening channel cannot escape outwards, but the parts of the batch at the end on the extrusion side can yield by the amount of the wedge-shaped expansion.
- the invention shows that when the final compression of the extruded part generated with the press stroke, the force acting on the boundary surfaces of the filling space at any point, on a line, in the length of the extruded portion is equal or at least approximately is the same size.
- the compression, the weights and the specific weight are equally large.
- Another advantage of the invention lies in the surface properties of the strand produced. Since the same compression prevails over the length of the strand section and thus over the entire strand, there is also the same surface structure, the same degree of roughness, the same appearance and is essential for finishing the strand with veneers, useful wood or other load-bearing materials same proportion of profile load (DIN 4762).
- Another advantage of the invention results from the uniform compression over the length of the strand section produced with each press stroke.
- the needle extraction value is correspondingly uniform.
- Products with comparable strength can be produced with low compaction force and the use of materials, or correspondingly higher-quality or dimensionally smaller products that can be nailed without problems, since there are no or only very slight fluctuations in the nail extraction value.
- the final product produced e.g. As a result, pallets can be manufactured at higher quality or at lower cost. This also results in a lower weight.
- the invention can be combined with closing slides, curing channels and filling and pressing rooms.
- the mixture of small plant parts reaches a filling chamber 1 into a filling chamber 2, the inlet opening of which is closed by a closing slide 3 during the compression process.
- the passage opening 4 of the closing slide 3 which can be moved back and forth by the lifting device 5, is above the inlet opening of the filling chamber 2 and allows the batch to fall through from the filling shaft 1 into the filling chamber 2.
- the cross section of the filling chamber 2 widens with the angle 6 from the size 7 of the extrusion-side end 8 to the size 9 of the hardening channel end 10.
- the parts of the batch located on the extrusion die side end 8 can, however, deviate transversely to the direction by the amount of the wedge-shaped extension, that is to say the dimensional difference between the size 7 of the extrusion die side end 8 and the size 9 of the hardening channel end 10.
- the parts of the batch located between the ends 8 and 10 can, however, move transversely to the pressing direction according to their position in the filling space 2.
- the part of the compression pressure acting transversely to the extrusion direction through the extrusion die 11 on the batch at any point, on a line lying in the pressing direction of the strand section produced with the compression stroke is the same or approximately the same size, since the parts of the In accordance with their position in the filling chamber 2, the compression pressure can partially evade.
Abstract
Description
Die Erfindung bezieht sich auf ein Verfahren und eine Vorrichtung zum Strangpressen oder Strangrohrpressen eines Gemenges aus pflanzlichen Kleinteilen, insbesondere Holzkleinteilen mit Bindemitteln, bei dem das Gemenge durch den Preßstempel einer Strangpresse in einem Füllraum verdichtet und in einem Aushärtekanal verfestigt wird.The invention relates to a method and an apparatus for extruding or extruding a mixture of small plant parts, in particular small wooden parts with binders, in which the mixture is compressed by the ram of an extruder in a filling chamber and solidified in a curing channel.
Etwa gleichzeitig mit dem Einschicht-Spannplattenpressen setzt auch die Entwicklung von Strangpressen für Spanplatten oder ähnlichen Erzeugnissen ein. Diese Vorrichtungen erlangten jedoch keine besondere Bedeutung, da weder die Verdichtung noch die Befüllung befriedigend gesteuert werden konnte.At around the same time as single-layer chipboard presses, the development of extrusion presses for chipboard or similar products begins. However, these devices were of no particular importance since neither the compression nor the filling could be controlled satisfactorily.
Durch die DE-PS 27 14 256 und deren Weiterentwicklungen wurden in der Praxis Vorrichtungen eingeführt, durch die brauchbare, aber noch befriedigende Produkte, insbesondere Klötze für die Palettenfertigung erzeugt werden können. Die Forderung nach mehrsträngigen Pressen stellte sich hierbei nicht, da diese Vorrichtungen hinsichtlich des Ausstoßes noch weiter entwicklungsfähig waren.DE-PS 27 14 256 and its further developments have introduced devices in practice by means of which usable but still satisfactory products, in particular blocks for pallet production, can be produced. The demand for multi-strand presses came up not here, since these devices were still further developable in terms of output.
Eine weitere Lehre ist der DE-PS 29 32 406 zu entnehmen. Nach dieser Lehre soll durch einen verlängerten Hub von 400 bis 800 mm und bei einer Vorschubgeschwindigkeit des Strangpreßstempels von 0,04 bis 1,5 m/s das Gemenge in einem Verfilzungszustand überführt werden, der eine erhöhte Festigkeit des Stranges ergeben soll.Another teaching can be found in DE-PS 29 32 406. According to this teaching, the batch should be transferred in a felting state by means of an extended stroke of 400 to 800 mm and a feed speed of the extrusion die of 0.04 to 1.5 m / s, which should result in increased strength of the strand.
Es hat sich jedoch gezeigt, daß die Verfilzung der Teile des Gemenges nicht durch die Länge des Verdichtungshubes des Strangpreßstempels und nicht durch die Geschwindigkeit des Strangpreßstempels erreicht wird, sondern ausschließlich durch einen den Füllraum während des Verdichtens abschließenden Schließschieber.However, it has been shown that the matting of the parts of the batch is not achieved by the length of the compression stroke of the extrusion die and not by the speed of the extrusion die, but only by a closing slide which closes the filling space during compression.
Beim Befüllen des Füllraumes legen sich die Teile des Gemenges mit einer ihrer großen Fläche parallel zur unteren Begrenzungswand des Füllraumes. Während des Verdichtens versuchen sie sich parallel zur Stirnfläche des Strangpreßstempels umzulegen. Zu diesem Umlegen wäre jedoch ein größeres Volumen des Füllraumes notwendig. Durch den Schließschieber, der den Füllraum während des Verdichtens verschließt, ist eine Volumensvergrößerung durch Ausweichen von Teilen des Gemenges in den Füllraum nicht möglich. Zudem wird das Volumen durch das Verfahren des Preßstempels immer geringer, bis die endgültige Verdichtung erreicht wird. Die Teile des Gemenges können ihre ursprüngliche Lage dadurch nur teilweise verändern, und verfilzen sich bei der Verdichtung ineinander. Dies geschieht unabhängig von der Vorschubgeschwindigkeit des Preßstempels. Das Gemenge aus pflanzlichen Kleinteilen verhält sich beim Verdichten nicht wie eine Flüssigkeit, die den Druck nach allen Seiten gleichmässig weiterleitet, sondern vielmehr ist der auf die den Füllraum begrenzenden, parallelen Begrenzungswände wirkende Druck sowie die Verdichtung, die Wichte und das spezifische Gewicht des mit dem Verdichtungshub des Strangpreßstempels erzeugten Strangteiles an der Stirnfläche des Strangpreßstempels am größten und nimmt zum vorderen Ende des verpreßten Strangteiles, welches sich an das im vorhergehenden Verdichtungshub erzeugten Strangteil anschließt, hin ab. Im Strang schließt sich damit an das höher verdichtete Ende eines mit jedem Preßhub erzeugten Strangteiles der niedriger verdichtete Anfang des nächsten Strangteiles an.When filling the filling chamber, the parts of the batch lie with one of their large areas parallel to the lower boundary wall of the filling chamber. During the compression process, they try to fold parallel to the end face of the extrusion die. However, a larger volume of the filling space would be necessary for this transfer. The closing slide, which closes the filling chamber during the compression process, does not make it possible to increase the volume by moving parts of the batch into the filling chamber. In addition, the volume of the press ram becomes smaller and smaller until the final compression is achieved. As a result, the parts of the batch can only partially change their original position and become entangled when they are compressed. This happens regardless of the feed rate of the ram. The mixture of small plant parts does not behave like a liquid when compacted, which distributes the pressure evenly on all sides, but rather the pressure acting on the parallel boundary walls that delimit the filling space, as well as the compression, the weights and the specific weight of the strand part produced with the compression stroke of the extrusion stamp on the end face of the extrusion stamp is greatest and takes to the front end of the pressed strand part, which adjoins the strand part generated in the previous compression stroke. In the strand, the lower compressed start of the next strand part follows the higher compressed end of a strand part produced with each press stroke.
Je länger der Verdichtungshub des Strangpreßstempels und damit das erzeugte Strangteil, desto größer ist der Unterschied der Wichte des spezifischen Gewichtes und die Verdichtung zwischen den Verbindungsflächen der Strangteile. In extremer Länge ist das pressenseitige Ende des Strangteiles so stark verdichtet, daß die Struktur der Kleinteile des Gemenges zerstört wird, ohne daß das andere Ende überhaupt verdichtet ist.The longer the compression stroke of the extrusion die and thus the extrusion produced, the greater the difference in the specific gravity and the compression between the connecting surfaces of the extrusions. In extreme length, the end of the strand part on the press side is compressed to such an extent that the structure of the small parts of the batch is destroyed without the other end being compressed at all.
Je größer der Unterschied der Verdichtung über die Länge des Strangteiles ist, desto geringer ist die Festigkeit und die Belastbarkeit des Stranges. Dem Versuch diesen Nachteil durch ein Profilieren der Stirnfläche zu beseitigen und die Strangteile gleichsam zu verzapfen, ist nur ein sehr geringer Erfolg beschieden, da die Bruchstelle dann nach der profilierten Zone bzw. nach der Verzapfung lag. Vorderkantenstränge können deshalb nicht als tragende Baulemente eingesetzt werden.The greater the difference in compaction over the length of the strand part, the lower the strength and resilience of the strand. Attempting to eliminate this disadvantage by profiling the end face and, as it were, mortising the strand parts is only very little success, since the breaking point then lay after the profiled zone or after the mortising. Front edge strands cannot therefore be used as load-bearing components.
Im Holzzentralblatt Stuttgart 45, Seite 650 vom 13.04.1988 ist aufgeschrieben, daß um den Sollwert des Nagelausziehwiderstandes bspw. von 5,5 kN bei Palettenklötze sicherzustellen, eine viel höhere mittlere Verdichtung, Preßkraft und ein größerer Materialeinsatz erforderlich ist. Aus dem Diagramm der oben genannten Quelle ergeben sich Nagelausziehwerte von 5,5 bis 9,6 kN bei laufender Fertigung. Da Verdichtung, Preßkraft, Materialeinsatz und Nagelausziehwert zueinander in einem bestimmten Verhältnis stehen, ergibt sich ein zu hoher Energie- und Materialeinsatz. Weiter bedingt dieses Verfahren entsprechend stärker dimensionierte Strangpressen und Verarbeitungsmaschinen z.B. Nagelmaschinen für die erzeugten Palettenklötze.In the Holzzentralblatt Stuttgart 45, page 650 from April 13, 1988 it is written that around the target value of the nail pulling resistance For example, to ensure 5.5 kN for pallet blocks, a much higher average compression, pressing force and a greater use of materials is required. From the diagram of the source mentioned above, nail extraction values of 5.5 to 9.6 kN result during ongoing production. Since compression, pressing force, material use and nail extraction value are related to each other, the energy and material used are too high. This process also requires extruders and processing machines of correspondingly larger dimensions, for example nailing machines for the pallet blocks produced.
Höherwertige Produkte können nicht erzeugt werden, da dadurch ein zu großer Oberwert des Nagelausziehwiderstandes und damit auch ein zu großer Nagelwiderstand entsteht, der die Herstellung hochwertiger Produkte verhindert, da das Produkt nicht mehr nagelbar ist.Higher-quality products cannot be produced because this results in a too high upper value of the nail pull-out resistance and thus also a too high nail resistance, which prevents the production of high-quality products because the product can no longer be nailed.
Mit der Erfindung wird die Aufgabe gestellt, ein Verfahren zum Strangpressen eines Gemenges aus pflanzlichen Kleinteilen mit Bindemitteln zu schaffen, wobei das erhaltene Produkt über die gesamte Länge möglichst homogen ist und dadurch eine höhere Belastung aushält und somit tragende Bauteile wie Balken hergestellt werden können und nur soviel Gemenge verdichtet wird, wie zum Erreichen der notwendigen Festigkeit erforderlich ist.The invention has for its object to provide a method for extruding a mixture of small plant parts with binders, the product obtained being as homogeneous as possible over the entire length and thus withstanding a higher load and thus load-bearing components such as beams can be produced and only as much batch is compressed as is necessary to achieve the necessary strength.
Die Erfindung geht von der Erkenntnis aus, daß die Bruchfestigkeit (Biegefestigkeit) eines Stranges um so kleiner ist, je größer der Unterschied der Verdichtung der Strangteile an ihren Enden bzw. über ihre Länge ist, und daß der Unterschied der Verdichtung um so größer ist, je länger der Verdichtungshub und damit das erzeugte Strangteilstück ist.The invention is based on the knowledge that the greater the difference in compression of the strand parts at their ends or over their length, the smaller the breaking strength (bending strength) of a strand, and that the greater the difference in compression, the longer the compression stroke and thus the strand section generated.
Der Winkel der keilförmigen Erweiterung wird durch das Profil des Stranges, der Länge des Füllraumes und die Größe der Verdichtung bestimmt. Bei parallelen Begrenzungswänden wird ein Teil der Preßkraft des Strangpreßstempels beim Verdichten auf die Begrenzungswände übertragen. Der auf die Begrenzungswände wirkende Teil der Preßkraft ist am strangpreßstempel-seitigem Ende am größten und am anderen Ende am geringsten. Da beim Verdichten die Struktur der Teile des Gemenges weitestgehend erhalten bleibt, wollen die Teile des Gemenges nur zu einem bestimmten Teil quer zur Preßrichtung ausweichen. Der Werkstoff fließt also nicht wie bspw. beim Metallstrangpressen, beim Verdichten durch kleinste Schlitze hindurch.The angle of the wedge-shaped extension is determined by the profile of the strand, the length of the filling space and the size of the compression. In the case of parallel boundary walls, part of the pressing force of the extrusion die is transferred to the boundary walls during compression. The part of the pressing force acting on the boundary walls is greatest at the end of the extrusion die and at the other end it is the least. Since the structure of the parts of the batch is largely preserved during compression, only a certain part of the parts of the batch want to avoid crosswise to the pressing direction. The material therefore does not flow through the smallest slits, as in metal extrusion, for example, when compacting.
Wird der Füllraum sich keilförmig erweiternd ausgebildet, können die Teile des Gemenges am aushärtekanalseitigem Ende nicht nach außen ausweichen, die Teile des Gemenges am strangpreßseitigem Ende jedoch um den Betrag der keilförmigen Erweiterung ausweichen. Bei einem entsprechenden Winkel der keilförmigen Erweiterung ergibt sich erfindungsgemäß, daß beim Erreichen der endgültigen Verdichtung des mit dem Preßhub erzeugten Strangteiles, die auf die Begrenzungsflächen des Füllraumes wirkende Kraft an jedem beliebigen Punkt, auf einer Linie, in der Länge des Strangteilstückes gleich oder wenigstens annähernd gleich groß ist. Entsprechend gleich groß ist auch die Verdichtung, die Wichte und das spezifische Gewicht.If the filling space is designed to widen in a wedge shape, the parts of the batch at the end of the hardening channel cannot escape outwards, but the parts of the batch at the end on the extrusion side can yield by the amount of the wedge-shaped expansion. At a corresponding angle of the wedge-shaped extension, the invention shows that when the final compression of the extruded part generated with the press stroke, the force acting on the boundary surfaces of the filling space at any point, on a line, in the length of the extruded portion is equal or at least approximately is the same size. The compression, the weights and the specific weight are equally large.
Mit der Erfindung wird eine wesentlich höhere Bruchfestigkeit (Biegefestigkeit) des Stranges als bei allen anderen vorbekannten Erzeugnissen erreicht.With the invention, a significantly higher breaking strength (bending strength) of the strand is achieved than with all other previously known products.
Ein weiterer Vorteil der Erfindung liegt in der Oberflächenbeschaffenheit des erzeugten Stranges. Da über die Länge des Strangteilstückes und damit über dem gesamten Strang eine gleiche Verdichtung vorherrscht, ergibt sich auch eine gleiche Oberflächenstruktur, ein gleicher Rauhigkeitsgrad, ein gleiches Aussehen und für das Veredeln des Stranges mit Furnieren, Nutzhölzern oder anderen tragfähigen Stoffen von wesentlicher Bedeutung, ein gleicher Profiltrag-Anteil (DIN 4762).Another advantage of the invention lies in the surface properties of the strand produced. Since the same compression prevails over the length of the strand section and thus over the entire strand, there is also the same surface structure, the same degree of roughness, the same appearance and is essential for finishing the strand with veneers, useful wood or other load-bearing materials same proportion of profile load (DIN 4762).
Ein weiterer Vorteil der Erfindung ergibt sich aus der, über die Länge gleichmässigen Verdichtung des mit jedem Preßhub erzeugten Strangteilstückes. Entsprechend gleichmässig ist auch der Nadelausziehwert. Es können mit geringer Verdichtungskraft und Materialeinsatz Produkte mit vergleichbarer Festigkeit erzeugt werden oder entsprechend höherwertige oder in der Dimensionierung kleinere Produkte, die ohne Probleme nagelbar sind, da keine oder nur sehr geringe Schwankungen im Nagelausziehwert auftreten. Das erzeugte Endprodukt z.B. Paletten sind dadurch höherwertiger oder kostengünstiger herstellbar. Weiterhin ergibt sich daraus ein geringeres Gewicht.Another advantage of the invention results from the uniform compression over the length of the strand section produced with each press stroke. The needle extraction value is correspondingly uniform. Products with comparable strength can be produced with low compaction force and the use of materials, or correspondingly higher-quality or dimensionally smaller products that can be nailed without problems, since there are no or only very slight fluctuations in the nail extraction value. The final product produced e.g. As a result, pallets can be manufactured at higher quality or at lower cost. This also results in a lower weight.
Die Erfindung ist mit Schließschiebern, Aushärtekanälen und Füll- und Preßräumen kombinierbar.The invention can be combined with closing slides, curing channels and filling and pressing rooms.
Einzelheiten sind in derr Zeichnung bspw. und schematisch dargestellt. Es zeigen:
- Fig. 1
- einen schematischen Längsschnitt durch eine Strangpreßvorrichtung.
- Fig. 2
- einen Querschnitt nach der Linie I-I gemäß Fig. 1
- Fig. 1
- a schematic longitudinal section through an extrusion device.
- Fig. 2
- a cross section along the line II of FIG. 1st
Beim Ausführungsbeispiel der Fig. 1 gelangt das Gemenge aus pflanzlichen Kleinteilen aus einem Einfüllschacht 1 in einen Füllraum 2, dessen Einrittsöffnung während des Verdichtungsvorganges durch einen Schließschieber 3 verschlossen ist. Beim Befüllen steht die Durchtrittsöffnung 4 des durch die Hubeinrichtung 5 hin und her beweglichen Schließschiebers 3 über der Eintrittsöffnung des Füllraumes 2 und erlaubt, das Durchfallen des Gemenges aus dem Einfüllschacht 1 in den Füllraum 2.In the exemplary embodiment of FIG. 1, the mixture of small plant parts reaches a
Der Querschnitt des Füllraumes 2 erweitert sich mit dem Winkel 6 von der Größe 7 des strangpreßseitigen Endes 8 auf die Größe 9 des aushärtekanalseitigen Endes 10. Beim Verdichten durch den Preßstempel 11 können die Teile des Gemenges, die sich am aushärtekanalseitigen Ende 10 befinden nicht quer zur Preßrichtung ausweichen.The cross section of the
Die sich am strangpreßstempelseitigem Ende 8 befindenden Teile des Gemenges können jedoch um das Maß der keilförmigen Erweiterung, also der Maßdifferenz zwischen der Größe 7 des strangpreßstempelseitigen Endes 8 und der Größe 9 des aushärtekanalseitigen Endes 10, quer zur Richtung ausweichen. Die sich zwischen den Enden 8 und 10 befindenden Teile des Gemenges können jedoch nach ihrer Lage in den Füllraum 2 quer zur Preßrichtung ausweichen.The parts of the batch located on the extrusion
Bei der entsprechenden Größe des Winkels 8 ist der quer zur Strangpreßrichtung wirkende Teil des Verdichtungsdruckes durch den Strangpreßstempel 11 auf das Gemenge an jedem beliebigen Punkt, auf einer in Preßrichtung liegenden Linie des mit dem Verdichtungshub erzeugten Strangteilstückes gleich oder annähernd gleich groß, da die Teile des Gemenges entsprechend ihrer Lage im Füllraum 2 den Verdichtungsdruck teilweise ausweichen können.With the corresponding size of the
Claims (4)
- A process for extruding or tube extruding a mixture of vegetable particles, in particular wood particles with binders, in which the mixture is compacted by the male form of an extruder in a loading chamber and solidified in a hardening channel, characterized in that the load is pressed through a loading and pressing chamber which widens in the shape of a wedge towards the hardening channel, so that the load undergoes the same level of compaction in the direction of pressing.
- A process according to Claim 1, characterized in that extrudate parts and billets are produced by the compaction which is at the same level over. the length of each extrudate part generated by a pressing stroke.
- A process according to Claim 1 or 2, characterized in that as a result of the compaction which is at the same level in the length of each extrudate part generated by a pressing stroke, the pressure acting on the delimiting walls of the loading and pressing chamber is at approximately the same level over the length when the final compaction of the extrudate is achieved.
- An apparatus for carrying out the process according to Claim 1, characterized in that the loading and pressing chamber of an extruder device is widened in the shape of a wedge towards the hardening channel.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19883814103 DE3814103C2 (en) | 1988-04-26 | 1988-04-26 | Method and device for extruding a mixture of small plant parts with binders |
| DE3814099 | 1988-04-26 | ||
| DE19883814099 DE3814099A1 (en) | 1988-04-26 | 1988-04-26 | Process and apparatus for the extrusion and tubular extrusion of small parts, in particular small parts of wood, with binders |
| DE3814103 | 1988-04-26 | ||
| EP19890107163 EP0339495A3 (en) | 1988-04-26 | 1989-04-20 | Method and device for profile extruding, especially tube extruding, a mixture of plant particles with binding agents |
Related Parent Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19890107163 Division EP0339495A3 (en) | 1988-04-26 | 1989-04-20 | Method and device for profile extruding, especially tube extruding, a mixture of plant particles with binding agents |
| EP89107163.1 Division | 1989-04-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0638401A1 EP0638401A1 (en) | 1995-02-15 |
| EP0638401B1 true EP0638401B1 (en) | 1996-08-21 |
Family
ID=25867420
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94113635A Expired - Lifetime EP0638401B1 (en) | 1988-04-26 | 1989-04-20 | Method and device for profile extruding, especially tube extruding a mixture of plant particles with binding agents |
| EP19890107163 Ceased EP0339495A3 (en) | 1988-04-26 | 1989-04-20 | Method and device for profile extruding, especially tube extruding, a mixture of plant particles with binding agents |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19890107163 Ceased EP0339495A3 (en) | 1988-04-26 | 1989-04-20 | Method and device for profile extruding, especially tube extruding, a mixture of plant particles with binding agents |
Country Status (3)
| Country | Link |
|---|---|
| EP (2) | EP0638401B1 (en) |
| AT (1) | ATE141544T1 (en) |
| DE (1) | DE58909715D1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4117659C2 (en) * | 1991-05-29 | 1996-05-02 | Karl Schedlbauer | Device for the metered introduction of a mixture of small parts, in particular small plant parts, into the filling and pressing space of an extrusion or extrusion tube press |
| ATE185104T1 (en) * | 1994-12-14 | 1999-10-15 | Karl Schedlbauer | METHOD AND DEVICE FOR PRODUCING TUBE PLATES AND STRIPS |
| ATE268252T1 (en) * | 1997-10-10 | 2004-06-15 | Werzalit Ag & Co | METHOD AND DEVICE FOR PRODUCING MOLDED PARTS |
| DE102010012838B4 (en) * | 2010-03-25 | 2015-06-18 | Guido Pusch | Apparatus for the production of compacts |
| CN106221844B (en) * | 2016-08-20 | 2019-08-09 | 湛江守仁生物质有限公司 | Manufacture is using bamboo wood chip as the automation extrusion equipment of the environment friendly biological fuel of raw material |
| DE202020100117U1 (en) * | 2020-01-10 | 2021-04-13 | Pfeifer Holz Gmbh | Extrusion device and extrusion product |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE432095C (en) * | 1922-09-06 | 1926-07-26 | Candlot Sa Fa Ets | Extruded briquette press with expanding press channel |
| DE1058658B (en) * | 1956-03-19 | 1959-06-04 | E H Leo Pungs Dr Ing Dr Ing | Method and device for the continuous production of molded wood chipboard, in particular chipboard |
| US3530552A (en) * | 1968-04-29 | 1970-09-29 | Glen H Calder | Extrusion device |
| DE2714256C2 (en) | 1977-03-31 | 1984-12-20 | Anton 8892 Kühbach Heggenstaller | Device for shaping and hardening extruded bodies from mainly vegetable material mixed with a binding agent |
| DE2932405C2 (en) * | 1979-08-09 | 1986-03-06 | Anton 8892 Kühbach Heggenstaller | Process and extrusion press for the production of small vegetable parts mixed with binding agent |
| DE2932406C2 (en) | 1979-08-09 | 1983-06-23 | Anton 8892 Kühbach Heggenstaller | Process and devices for extrusion of a mixture on small plant parts and binders |
-
1989
- 1989-04-20 DE DE58909715T patent/DE58909715D1/en not_active Expired - Lifetime
- 1989-04-20 EP EP94113635A patent/EP0638401B1/en not_active Expired - Lifetime
- 1989-04-20 EP EP19890107163 patent/EP0339495A3/en not_active Ceased
- 1989-04-20 AT AT94113635T patent/ATE141544T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0339495A3 (en) | 1991-04-03 |
| EP0339495A2 (en) | 1989-11-02 |
| DE58909715D1 (en) | 1996-09-26 |
| ATE141544T1 (en) | 1996-09-15 |
| EP0638401A1 (en) | 1995-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0086899B1 (en) | Method of and apparatus for the compression moulding of a shaped article, particularly for producing a single or multi-part pallet, a supporting strut or a girder beam profile | |
| DE3346469A1 (en) | METHOD AND DEVICE FOR EXTRUDING PLANT SMALL PARTS MIXED WITH BINDERS, IN PARTICULAR SMALL WOOD PARTS | |
| EP0025114A1 (en) | Method and device for extruding a mixture of plant particles and binding agents | |
| DE2647944B1 (en) | Method and device for the production of molded bodies from thermoplastics and a sheet-shaped, chipped, fibrous, non-thermoplastic material | |
| EP0638401B1 (en) | Method and device for profile extruding, especially tube extruding a mixture of plant particles with binding agents | |
| CH346362A (en) | Device for pressing hollow bodies | |
| DE3916774C2 (en) | ||
| EP1066138A1 (en) | Method and device for producing a profiled material | |
| DE2061755A1 (en) | Method and device for treating kitchen waste by pressing | |
| DE3814103C2 (en) | Method and device for extruding a mixture of small plant parts with binders | |
| DE2932405A1 (en) | Extruding wood chipboard - using intermittently acting ram thrusting charge into first consolidating passage entrance while closing off inlet | |
| DE1247002B (en) | Method and device for extrusion of profiled products from a mixture of shredded chips of wood waste, agricultural waste products and similar raw material with polymer binders | |
| DE3539364C2 (en) | ||
| DE2556168A1 (en) | BALING PRESS FOR COMPRESSING WASTE MATERIAL | |
| EP0339497B1 (en) | Method and device for bar extruding or tube extruding | |
| DE19830542A1 (en) | Extrusion method for flat small parts | |
| DE639194C (en) | Process for briquetting fine waste on roller presses | |
| AT408205B (en) | PRESSING DEVICE FOR COMPRESSING METAL PARTS, ESPECIALLY CHIPS | |
| DE3906107A1 (en) | Square press | |
| DE3322144C2 (en) | ||
| DE4027583C2 (en) | Device for pressing extruded parts | |
| DE953465C (en) | Process for the production of pressed material panels, in particular door panels | |
| DE102006032149A1 (en) | Process for extruding plant material parts e.g. wood chips comprises unevenly pre-compressing the material in a pressing chamber to eliminate compression differences caused by an extrusion die and produce uniformly compressed extruded parts | |
| DE3227074A1 (en) | Supporting bar made of pressed vegetable particles mixed with binders | |
| DE3814099A1 (en) | Process and apparatus for the extrusion and tubular extrusion of small parts, in particular small parts of wood, with binders |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 19940914 |
|
| AC | Divisional application: reference to earlier application |
Ref document number: 339495 Country of ref document: EP |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE |
|
| 17Q | First examination report despatched |
Effective date: 19950529 |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| AC | Divisional application: reference to earlier application |
Ref document number: 339495 Country of ref document: EP |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19960821 Ref country code: ES Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19960821 |
|
| REF | Corresponds to: |
Ref document number: 141544 Country of ref document: AT Date of ref document: 19960915 Kind code of ref document: T |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: E. BLUM & CO. PATENTANWAELTE |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19960821 |
|
| REF | Corresponds to: |
Ref document number: 58909715 Country of ref document: DE Date of ref document: 19960926 |
|
| ITF | It: translation for a ep patent filed |
Owner name: STUDIO JAUMANN |
|
| ET | Fr: translation filed |
Free format text: CORRECTIONS |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| RIN2 | Information on inventor provided after grant (corrected) |
Free format text: SPIES, XAVER |
|
| 26N | No opposition filed | ||
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PUE Owner name: ANTON HEGGENSTALLER AG TRANSFER- AGAB AKTIENGESELL |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP |
|
| NLS | Nl: assignments of ep-patents |
Owner name: AGAB AKTIENGESELLSCHAFT FUER ANLAGEN UND BETEILIGU |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PUE Owner name: ANTON HEGGENSTALLER AG Free format text: AGAB AKTIENGESELLSCHAFT FUER ANLAGEN UND BETEILIGUNGEN#OPERNPLATZ 2#60313 FRANKFURT AM MAIN (DE) -TRANSFER TO- ANTON HEGGENSTALLER AG#MUEHLENSTRASSE 7#86556 UNTERBERNBACH (DE) |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E |
|
| NLS | Nl: assignments of ep-patents |
Owner name: ANTON HEGGENSTALLER AG |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PFA Owner name: ANTON HEGGENSTALLER AG Free format text: ANTON HEGGENSTALLER AG#MUEHLENSTRASSE 7#86556 UNTERBERNBACH (DE) -TRANSFER TO- ANTON HEGGENSTALLER AG#MUEHLENSTRASSE 7#86556 UNTERBERNBACH (DE) |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20080424 Year of fee payment: 20 Ref country code: LU Payment date: 20080429 Year of fee payment: 20 Ref country code: DE Payment date: 20080227 Year of fee payment: 20 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20080423 Year of fee payment: 20 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20080428 Year of fee payment: 20 Ref country code: BE Payment date: 20080423 Year of fee payment: 20 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20080424 Year of fee payment: 20 Ref country code: NL Payment date: 20080422 Year of fee payment: 20 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20080418 Year of fee payment: 20 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20080423 Year of fee payment: 20 |
|
| BE20 | Be: patent expired |
Owner name: *ANTON HEGGENSTALLER A.G. Effective date: 20090420 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: PE20 Expiry date: 20090419 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20090420 |
|
| NLV7 | Nl: ceased due to reaching the maximum lifetime of a patent |
Effective date: 20090420 |
|
| EUG | Se: european patent has lapsed | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20090419 |