EP0084640B1 - Dispositif d'alimentation de la chambre de charge d'une presse extrudeuse horizontale à piston avec un mélange de petites particules végétales et un liant, pour la fabrication de profilés creux prismatiques extrudés - Google Patents

Dispositif d'alimentation de la chambre de charge d'une presse extrudeuse horizontale à piston avec un mélange de petites particules végétales et un liant, pour la fabrication de profilés creux prismatiques extrudés Download PDF

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Publication number
EP0084640B1
EP0084640B1 EP82111424A EP82111424A EP0084640B1 EP 0084640 B1 EP0084640 B1 EP 0084640B1 EP 82111424 A EP82111424 A EP 82111424A EP 82111424 A EP82111424 A EP 82111424A EP 0084640 B1 EP0084640 B1 EP 0084640B1
Authority
EP
European Patent Office
Prior art keywords
mandrel
filling chamber
slide valves
extrusion
hollow prismatic
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
Application number
EP82111424A
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German (de)
English (en)
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EP0084640A1 (fr
Inventor
Anton Heggenstaller
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to AT82111424T priority Critical patent/ATE12907T1/de
Publication of EP0084640A1 publication Critical patent/EP0084640A1/fr
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Publication of EP0084640B1 publication Critical patent/EP0084640B1/fr
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    • 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
    • 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

Definitions

  • the invention relates to a device for loading the filling space of a horizontal piston extruder with a mixture of small plant parts and binders for the production of hollow prismatic extruded profiles, in which the upwardly open side of a filling funnel facing through the filling space penetrated by at least one mandrel through one and moveable closing slide can be covered.
  • Piston extrusion presses work in time.
  • the piston immersed in the filling chamber compresses the mixture therein and presses it through a shaping recipient into a heated curing channel, where the binding of the binder takes place due to the action of heat as the strand progressively advances in cycles.
  • the filling chamber of such a piston extruder is usually fed in free fall from a loading hopper which is arranged above the filling chamber and whose outlet opening below is delimited by a closing slide.
  • a closing slide In a previously known arrangement according to DE-A1-2810070 there is a through opening in the closing slide, the cross section of which corresponds approximately to the filling opening of the filling space. If the passage opening is congruent with the outlet opening of the loading funnel, the filling space can be filled with the mixture. This happens when the extrusion piston is retracted.
  • the invention pursues the problem that has not yet been solved, of producing extruded profiles with a hollow prismatic cross section from a mixture of small plant parts and binders.
  • Such hollow prismatic cross sections require a corresponding cross section of a mandrel in the filling space.
  • Starting from horizontal piston extrusion presses there would then be an area of the filling space below the prismatic mandrel which, due to the free fall of the mixture, which is often referred to as non-flowable, cannot be filled sufficiently.
  • a vertical cold extrusion press would not have this problem.
  • Such cold extrusion presses are known per se for the production of particle boards, but for this it is necessary to transfer the vertical action of the extrusion press into a horizontal feed movement of the set strand. Such a measure would be inconceivable in the production of hollow prismatic extruded profiles.
  • the invention is therefore based on the special object of enabling the production of hollow prismatic extruded profiles in a horizontal cold extrusion press.
  • the essence of the invention is that at least one reciprocatingly driven plug-and-slide pair, which plunges from the side into the filling space region below the mandrel, is arranged.
  • This pair of stuffing slides arranged at a certain point in the filling chamber has the effect that when the mixture is poured in along the side surfaces of the mandrel, the accumulating mixture moves (stuffing) into the filling chamber region below the mandrel, in order in this way approximately around the mandrel to achieve the same filling densities.
  • the invention provides that the individual slide of the pair of stuffing slides has a cover corresponding at least to the wall thickness of the extruded profile, whereby in this case the wall thickness of the vertical web of the extruded profile is meant if such a profile should have different wall thicknesses.
  • the pair of stuffing slides are assigned to each stroke of the extrusion piston. It is even conceivable that the movement of the pair of stuffing slides is different from the movement of the pair of sliders covering the filling space upwards. If the passage opening of the pair of slides is congruent with the outlet opening of the loading funnel, then the slides of the plug-and-slide pair should be in the withdrawn, ineffective position, in which they form part of the wall of the filling chamber. However, if the normal closing slide is in its end positions and the filling space is thus covered at the top, then it is advisable to move the stuffing slides into the filling space, which can also be done in a rapid, oscillating manner. This leads to the fact that the mixture introduced into the filling space during the first slide movement is preferably distributed into the filling space area below the mandrel and that the next time the closing slide moves, the mixture brought into the filling space is properly built up from the bottom up.
  • the invention also offers, in the course of an embodiment variant, the possibility that when partition walls or inwardly projecting web approaches of the extruded profiles are arranged, these are directed horizontally in the piston extruder and additional plug-and-slide pairs can be moved to and fro in their plane. If it is an extruded profile with a continuous partition, then this can be properly filled with the means of the invention both in the horizontal and in the vertical position. If, however, web attachments are present, then it is advisable to arrange them horizontally in the course of the latter feature of the invention and to provide additional pairs of stuffing slide valves in order to ensure proper filling of the filling space, particularly with these web attachments.
  • the extruded profile 1 according to FIG. 1 has a hollow prismatic cross section, which in this example is square, without the invention being restricted to this. It should! so that it is only symbolically indicated that rectangular, trapezoidal and polygonal cross sections also belong to the consideration according to the invention, which all cross sections have in common that a prismatic cavity 4 is based, the cross section of which may be proportional to the overall cross section, but need not be.
  • an extruded profile 2 with a dividing wall 6 is shown in cross section, which results in prismatic cavities 4 that are separate from one another.
  • the problem arises of producing both the dividing wall and the wall of the extruded profile 2 lying at the bottom in the same condition as the other walls.
  • FIG. 3 shows an extruded profile 3 with web projections 7 projecting inwards, as a result of which an I-shaped prismatic cavity 4 is formed.
  • a filling chamber 8 of a horizontal piston extrusion press is shown in cross section.
  • This filling space 9 is penetrated by a mandrel 9, namely along the extrusion direction, so that, for example, an extrusion profile according to such an arrangement.
  • Fig. 1 can be produced.
  • the filling space 8 is laterally delimited by side walls 10 which are connected to a floor 11.
  • the small plant parts can be made from wood shavings, wood fibers, sawdust, or from agricultural waste products, e.g. B.
  • the closing slide 13 acc. Fig. 4 has a passage opening 14 which corresponds approximately to the outlet cross section of the hopper 12, in which the mixed mass to be pressed is located.
  • the closing slide 13 has been adjusted so far with the aid of its symbolically illustrated lifting drive 15 that the passage opening 14 is congruent with the outlet opening of the hopper 12 at least in a partial area, the mixture can reach the filling space 8 delimited by the side walls 8 and the mandrel 9 under the conditions of free fall.
  • stuffing slides 16, 17 with associated lifting drives 18, 19 are now provided, which can be moved back and forth in the plane of the filling space area located below the mandrel 9, as the arrows indicate.
  • These stuffing slides 16, 17 have the task of laterally shifting the mixture in front of them into the filling space area below the mandrel 9, that is to say to stuffing them there.
  • the control of the lifting drives 18, 19 is selected such that when the stuffing slide 16, 17 hits a considerable resistance, the stuffing slide 16, 17 is not enforced.
  • a control system is suitable such that when the passage opening 14 is passed along the filling chamber 8, the stuffing slides 16, 17 remain in their drawn starting position.
  • the stuffing slides 16, 17 should be moved back and forth at least once, preferably several times. It is thereby achieved that the area of the filling chamber 8 located below the mandrel 9 is initially filled with the mixture that is accumulated on the side of the mandrel 9. If this is achieved, the closing slide movement 13, 15 can be continued without further movement of the stuffing slide 16, 17.
  • the embodiment of the figure shows an arrangement of the filling device for the production of extruded profiles according to. Fig.2, it remains open whether the extruded profile to be manufactured a continuous partition 6 or web approaches 7 acc. 2 and 3.
  • stuffing slides 16, 17 with their drives 18, 19 are the same as in FIG. 4.
  • additional stuffing slides 20, 21 with associated lifting drives 22, 23 are provided, which have the task of removing the mass located on the side of the mandrels 9 in the Plug the space between the thorns 9.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Peptides Or Proteins (AREA)
  • Basic Packing Technique (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Claims (4)

1. Dispositif d'alimentation de la chambre de compression d'une extrudeuse à piston en un mélange de particules végétales et de liant pour la fabrication de profilés prismatiques creux extrudés, dans lequel le côté, ouvert vers le haut et tourné vers une trémie d'alimentation, de la chambre de compression, qui est traversée par au moins un mandrin, peut être recouvert par un tiroir obturateur qui va et vient, caractérisé par au moins un couple de tiroirs de bourrage (16, 17), qui peut aller et venir et qui pénètre par le côté dans la région de la chambre de compression en dessous du mandrin (9).
2. Dispositif selon la revendication 1, caractérisé en ce que l'un des tiroirs du couple de tiroirs de bourrage (16, 17) présente au moins une course correspondant à l'épaisseur de paroi du profilé extrudé (1, 2, 3).
3. Dispositif selon la revendication 1 ou 2, caractérisé en ce qu'à chaque course du piston de l'extrudeuse sont associées au moins deux courses du couple de tiroirs de bourrage (16, 17).
4. Dispositif selon la revendication 1 ou l'une des suivantes, caractérisé en ce que, quand il est prévu des cloisons de séparation (6) ou des amorces en saillie vers l'extérieur de séparation (7) des profilés extrudés (1, 2, 3), celles-ci sont dirigées horizontalement dans l'extrudeuse à piston et il est prévu des couples de tiroirs de bourrage (16, 17) supplémentaires allant et venant dans leurs plans.
EP82111424A 1981-12-21 1982-12-09 Dispositif d'alimentation de la chambre de charge d'une presse extrudeuse horizontale à piston avec un mélange de petites particules végétales et un liant, pour la fabrication de profilés creux prismatiques extrudés Expired EP0084640B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82111424T ATE12907T1 (de) 1981-12-21 1982-12-09 Vorrichtung zum beschicken des fuellraumes einer horizontalen kolben-strangpresse mit einem gemisch aus pflanzlichen kleinteilen und bindemittel zur herstellung hohlprismatischer strangpressprofile.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3150577 1981-12-21
DE3150577A DE3150577C2 (de) 1981-12-21 1981-12-21 Vorrichtung zum Beschicken des Füllraumes einer horizontalen Kolben-Strangpresse mit einem Gemisch aus pflanzlichen Kleinteilen und Bindemittel zur Herstellung hohlprismatischer Strangpreßprofile

Publications (2)

Publication Number Publication Date
EP0084640A1 EP0084640A1 (fr) 1983-08-03
EP0084640B1 true EP0084640B1 (fr) 1985-04-24

Family

ID=6149295

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82111424A Expired EP0084640B1 (fr) 1981-12-21 1982-12-09 Dispositif d'alimentation de la chambre de charge d'une presse extrudeuse horizontale à piston avec un mélange de petites particules végétales et un liant, pour la fabrication de profilés creux prismatiques extrudés

Country Status (6)

Country Link
EP (1) EP0084640B1 (fr)
AT (1) ATE12907T1 (fr)
DE (2) DE3150577C2 (fr)
FI (1) FI69785C (fr)
IL (1) IL67520A (fr)
NO (1) NO156401C (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4301153C1 (de) * 1993-01-18 1994-02-10 Karl Moser Formholzbalken und Verfahren zu seiner Herstellung
EE200000436A (et) * 1998-02-04 2001-12-17 Anton Heggenstaller Ag Meetod õõnsate profiilide ekstrudeerimiseks taimsetest osakestest, ekstruuder ning horisontaalse ekstruuderi täite- ja pressimiskambri täiteseade
DE29801829U1 (de) * 1998-02-04 1999-06-02 Anton Heggenstaller AG, 86556 Kühbach Strangpresse für pflanzliche Kleinteile
DE202020100117U1 (de) * 2020-01-10 2021-04-13 Pfeifer Holz Gmbh Strangpresseinrichtung und Strangpressprodukt
IT202100023171A1 (it) * 2021-09-08 2023-03-08 Imal Srl Attrezzatura e procedimento per la realizzazione di pannelli in materiale legnoso

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT162232B (de) * 1945-08-16 1949-02-10 Karl Dr Peschek Verfahren und Vorrichtung zum Pressen von Hohlkörpern
LU34188A1 (fr) * 1956-08-08
DE2714256C2 (de) * 1977-03-31 1984-12-20 Anton 8892 Kühbach Heggenstaller Vorrichtung zum Formen und Aushärten stranggepreßter Körper aus vornehmlich pflanzlichem, mit einem Bindemittel gemischtem Material
DE2810070C2 (de) * 1978-03-08 1982-07-22 Anton 8891 Unterbernbach Heggenstaller Schließvorrichtung für Füllstationen von horizontal wirkenden Strangpressen
DE2932406C2 (de) * 1979-08-09 1983-06-23 Anton 8892 Kühbach Heggenstaller Verfahren und Vorrichtungen zum Strangpressen eines Gemenges auf pflanzlichen Kleinteilen und Bindemitteln
DE2948082A1 (de) * 1979-11-29 1981-06-04 Anton 8891 Unterbernbach Heggenstaller Anordnung eines balkens aus stranggepressten kleinteilen und vorrichtung zu seiner herstellung

Also Published As

Publication number Publication date
ATE12907T1 (de) 1985-05-15
NO156401C (no) 1987-09-16
FI824236A0 (fi) 1982-12-09
IL67520A0 (en) 1983-05-15
IL67520A (en) 1987-02-27
FI69785C (fi) 1986-05-26
EP0084640A1 (fr) 1983-08-03
FI824236L (fi) 1983-06-22
DE3150577A1 (de) 1983-08-04
NO824185L (no) 1983-06-22
DE3263310D1 (en) 1985-05-30
FI69785B (fi) 1985-12-31
NO156401B (no) 1987-06-09
DE3150577C2 (de) 1983-12-29

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