EP0118072A1 - Procédé et installation pour le moulage par compression de profilés à section constante en particules végétales - Google Patents

Procédé et installation pour le moulage par compression de profilés à section constante en particules végétales Download PDF

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Publication number
EP0118072A1
EP0118072A1 EP84101754A EP84101754A EP0118072A1 EP 0118072 A1 EP0118072 A1 EP 0118072A1 EP 84101754 A EP84101754 A EP 84101754A EP 84101754 A EP84101754 A EP 84101754A EP 0118072 A1 EP0118072 A1 EP 0118072A1
Authority
EP
European Patent Office
Prior art keywords
press
profile
pressing
jaws
roller
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
EP84101754A
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German (de)
English (en)
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EP0118072B1 (fr
Inventor
Anton Heggenstaller
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.)
Anton Heggenstaller GmbH
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Anton Heggenstaller 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 Anton Heggenstaller GmbH filed Critical Anton Heggenstaller GmbH
Priority to AT84101754T priority Critical patent/ATE23124T1/de
Publication of EP0118072A1 publication Critical patent/EP0118072A1/fr
Application granted granted Critical
Publication of EP0118072B1 publication Critical patent/EP0118072B1/fr
Expired legal-status Critical Current

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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
    • B27N5/00—Manufacture of non-flat articles

Definitions

  • the invention relates to methods and devices for compression molding profiles, bars, moldings or the like from small vegetable parts mixed with binders, in particular small wooden parts, which are cured in the pressed state by the action of heat.
  • a compression molding process of this type is specified in DE-OS 30 35 701. Thereafter, the profile or the like is pressed in a press mold to obtain its final cross-sectional shape and hardened by the action of heat.
  • the pressing process is to be carried out as long as the binding agent does not yet have a binding effect among the individual particles of the used brings about.
  • the problem with the method described above is merely to wait until the finished pressed molding or profile has hardened before a new pressing process can be initiated. In some cases it is also necessary to cool the mold before the next pressing can take place.
  • the invention is therefore based on the object of specifying further developed methods and devices with which it is possible to increase the productivity in the production of profiles, bars, moldings or the like quite considerably without having to increase the investment costs.
  • the solution to this problem according to the invention is based on DE-OS 30 35 701 and consists in that the profile pressed into its final shape with its pressing jaws encasing the profile or the like is pushed along its longitudinal axis while maintaining the final press position in at least one movable clamping device, whereupon the clamped profiles are cured under the action of heat and press jaws of another press jaw approach are returned to the press position of the press.
  • the general inventive idea of the invention is therefore to harden the finished pressed profiles or the like outside the press. This measure may not come as a surprise, because it seems logical in itself not to extend the pressing time of a press by the curing time.
  • a press space 1 is provided within a press, into which a profile blank 2 is inserted in the manner described below.
  • This profile blank 2 consists of small plant parts, in particular small wooden parts, which are mixed with binders. This mixture sets after the final compression by heat.
  • the invention also encompasses other profiles which change in cross section, such as, for example, support bars for pallets, supports, rods, rails, chair legs and the like.
  • In the area of the press room 1 of the press their components are not need to be heated by targeted measures, there are pressing jaws 3, 4, 5, 6 of which the pressing jaws 3, 4 form the web area of the finished profile 15 and the pressing jaws 5, 6 form the flange area. All press jaws 3 to 6 encompass the blank 2 or the finished profile 15 formed later.
  • a pre-pressing measure is provided in the exemplary embodiment.
  • the press jaws 3 to 6 are located within the guides 7 assigned to them in the retracted position shown in FIG. 1.
  • FIG. 8 schematically shows a metering device through which the mixture to be compressed and mixed with binders is fed to a pre-pressing chamber, which is not shown in FIG. 1 for the sake of shortening the disclosure.
  • This pre-pressing space is actually formed by the shaft 20, which in the example of FIG. 1 is located above the pressing space 1.
  • This shaft 20 is delimited by the pressure bar 12 and the counter pressure bar 13, the distance of which is variable by stroke generators 11, which are combined in a frame 10 together with the pressure bar 12 and the pressure bar 13.
  • CJ shunt is that the shaft 20 to shown to the Figure 1 position by about 2/3 of its width is reduced from the position below the metering device. 8 This results in a corresponding pre-pressing of the mixture filled in the shaft 20, although the degree of pre-pressing can be chosen as required.
  • the pre-pressed profile blank in the position shown in Figure 1 is initially above the press space 1. If one now increases the distance between the pressure bar 12 and the counter-pressure bar 13 more or less, the profile blank 2 can be in the press space 1 arrive. This is done either by gravity or by a stroke the press block 6 located above the profile blank 2 in the rest position, which is moved downwards. At the end of this process, the profile blank 2 is in the position shown in FIG. 1 within the pressing space 1.
  • the lateral pressing jaws 3, 4 are then driven into the profile blank 2, resulting in a deformation with respect to the finished profile 15.
  • These lateral pressing jaws 3, 4 then remain in their pressing position, whereupon the vertical pressing jaws 5, 6 act again on the profile blank 2 until it has reached the shape shown in FIG. In this position, it is possible that the molds 3, 4 can be reshaped again.
  • This multi-stage pressing process can be varied in different ways.
  • This pressing process can be carried out as part of a so-called cold press respectively.
  • the finished profile 15 shown in FIG. 2 is now to be moved out of the press chamber 1 along its longitudinal axis, it being important in the sense of the invention that the press jaws 3 to 6 should follow this movement.
  • the press jaws 3 to 6 are supported on roller tables 17, which in turn rest against the press rams 16.
  • the press rams 16 are moved by stroke generators 18. This results in a plane of separation between the press jaws 3 to 6 on the one hand and the press dies 16 assigned to them, which extends parallel to the longitudinal axis of the profile 15.
  • the press jaws 3 to 6 are able to be moved out of the press space 1 with the finished pressed profile 15 in the direction of its longitudinal axis.
  • the press jaws 3 to 6 must be positively connected to the press rams 16 assigned to them in the press direction and in the longitudinal axis direction of the profile 15, for which purpose the embodiment of FIG. 1 shows webs 19 engaging in different forms, in the press jaws 3 , 4, these engaging webs 19 are shown in the form of dovetail guides and in the case of the pressing jaws 5, 6 in the form of hammer-head-shaped groove guides. This is intended to ensure that the individual press ram 16 should be able to remove the press jaw 3 to 6 assigned to it To promote the final press position back to the position shown in FIG. 1. It is obvious that such engaging webs 19 can be designed in different ways.
  • FIG. 3 shows, the finished pressed profile 15 with its press jaws 3 to 6 is moved along its longitudinal axis by a stroke generator 21 in the context of the final press position, a pressing disk 22 of the stroke generator 21 not only the finished profile 15 but also the associated press jaws 3 to 6 deports.
  • This pushed unit 3 to 6, 15 is now transferred from the roller table 17 to the roller table 24, which is arranged in a tensioning device 23. Both roller tables 17, 24 are aligned with each other.
  • the term “clamping device 23" generally refers to an arrangement which is capable of receiving the pressing jaws 3 to 6 with the finished profile 15 clamped between them in a clamped position and supplying the curing.
  • the tensioning devices 23 are located in a chassis 50 shown in FIG. 8, which can be moved along rails 25 which extend transversely to the direction of movement of the stroke generators 21. As will be shown later, this measure can be varied in different ways.
  • the press chamber 1 is either closed at the end or released at the end.
  • an axial thrust is created via the roller tables 24, which is absorbed by the slide 27, which in turn is guided in the support rails 29.
  • This slide also has a cutout 30 through which a stroke generator 31 can grip. With the aid of its push-off disk 32, this stroke generator 31 serves to produce a fully hardened profile 15 with its press jaws 3 to 6 back in the press room 1, but this is only one of several possibilities.
  • the clamping device 23 If the clamping device 23 has now received the finished pressed profile 15 with its pressing jaws 3 to 6 in the pressing end position, it is moved transversely to the longitudinal axis of the finished profile 15 in the embodiment of FIG. 3 in order to feed the finished profile 15 to its curing. For this purpose, heat can be generated within the clamping device 23 or the clamping device 23 can be guided through a curing channel. In this regard, reference is made to the description of FIG. 8.
  • FIGS. 4 to 6 show, for example, details of the design of the individual roller table 17 (see FIG. 1).
  • This roller table consists of individual rollers 34 which are spaced apart from one another by rotating shoes 35. These circular shoes 35 are known in their spatial shape. In the subject of the invention, it is advisable to form them from steel because they have to be resistant due to the curing temperature.
  • the rollers 34 are supported on the press ram 16 (see FIG. 1).
  • the rollers 34 act on the press jaws 3 to 6 and consequently allow them rolling friction with low frictional resistance.
  • the piling aisles 17 as a recirculating roller table (cf. FIG. 1).
  • the circulating shoes 35 must be articulated to one another. In the example in FIG. 4, the joint 36 is shown symbolically.
  • FIGS. 5 and 6 show that edges of the circulation shoes 35 projecting beyond the rollers 34 on the end face are guided on guide rails 37 of the press rams 16 so that they cannot escape in the direction of the press jaws 3 to 6.
  • the joints 36 can be formed by appropriate shapes in the area of the lugs 38, as are common, for example, in bracelets.
  • the design of such roller tables 17 is known per se, which is why no further explanation is required. It is essential that the rollers 34 are connected to each other in a constant distance, but their connecting means are articulated. This makes it possible to guide the roller tables 17 in a form-fitting manner and to design them all around.
  • roller tables 24 which are arranged in the area of the tensioning stations 23 (FIG. 3).
  • the lateral pressing jaws 3, 4 are moved back into the starting position according to FIG. 7, whereby the finished pressed profile 15 is given the required degree of freedom with the help of the lower pressing jaw 5 and the associated pressing die 16 , 18 to be raised to the position shown in FIG.
  • the finished pressed profile 15 enters the shaft 40, which is located between the counter-pressure bar 13 and the end wall 39.
  • the pre-pressing tool 9 is shifted into the position which is moved to the left in the drawing. While the pre-pressing tool 9 is shifted to the right in the drawing, a pre-pressed profile blank 2 reaches the position of the shaft 20 above the pressing space 1 on the one hand moved to the position shown in Figure 7 ae.
  • a piston 43 with an end plate 44 engages through corresponding bores 42 of the slide 41 and eject the finished pressed profile 15 from the shaft 40 in the direction of arrow 46.
  • the piston 43 is connected to a stroke generator 45, which can be flange-mounted on the guide 7, for example.
  • the bores 42 are larger than the pistons 43 in accordance with the stroke of the slide 41.
  • tensioning frame 47 In order to make this tensioning frame 47 flush with the longitudinal axis of the ejected profile 15, it is supported on springs 51 on a chassis 50, insulation 48 and a circumferential outer wall 49 being located between the tensioning frame 47 and the chassis 50. Heating elements 52 are arranged within the clamping frame 47, which have the task of curing the profile 15 accommodated in the clamping frame 47.
  • the tensioning device 23 also has roller tables 24 (see FIG. 3).
  • a clamping device 23 If a clamping device 23 has now received a finished pressed profile 15 with its pressing jaws 3 to 6, the chassis 50 is moved transversely, so that a new clamping device 23 comes to rest on the front side of the pressing chamber 1. Accordingly, a plurality of such clamping devices 23 can accommodate such finished pressed profiles 15 and lead them to curing. However, as soon as a profile 15 has hardened, its tensioning device 23 is moved again in front of the pressing chamber 1 according to FIG. 3, so that the lifting device 31 with its pressing disk 32 can push the units 2 to 6 and 15 back into the pressing chamber 1. From there, the ejection movement of the finished profile 15 takes place in the sense of the representation according to FIG. 7.
  • chassis 50 according to FIG. 8 can also be divided into several chassis, it being possible to convey these individual chassis in curing ovens and to retrieve them after the profiles 15 have hardened.
  • FIGS. 9 and 10 A variant of FIGS. 3 and 8 results from FIGS. 9 and 10. Thereafter, the unit consisting of the pressing jaws 3 to 6 and the finished pressed profile 15 is pushed into an encircling roller table 53 which is supported on roller table beds 54.
  • This roller table 53 can be located, for example, within a curing channel 55.
  • the pressing jaws 3 to 6 can be provided with toothed rings 56, on which toothed wheels 57 act, several of which can be arranged within the hardening channel 55.
  • the problem with this embodiment variant is to return the press jaws 3 to 6 back into the press chamber 1. This can be done through well-known funding programs. But it is also possible to push the finished pressed profile 15 into the roller table 53 without moving the press jaws 3 to 6, the roller tables 53 being designed by suitably designed press jaws which move endlessly in a circle and together form a working path in which the ejected finished profile 15 is cured clamped. Such systems are known from the manufacture of plastic corrugated pipes.
  • the strength of the profile 15 produced within the scope of the exemplary embodiments essentially depends on how the structure of the small parts is directed in the area of the pressing chamber 1. This alignment of the small parts is brought about within the transfer from the metering device 8 according to FIG. 1 into the shaft 20.
  • the invention goes Assume that small parts should preferably be aligned parallel to the longitudinal axis of the profile 15. How this can be achieved is the subject of another invention.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Press Drives And Press Lines (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Veneer Processing And Manufacture Of Plywood (AREA)
  • Forging (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP84101754A 1983-03-03 1984-02-20 Procédé et installation pour le moulage par compression de profilés à section constante en particules végétales Expired EP0118072B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84101754T ATE23124T1 (de) 1983-03-03 1984-02-20 Verfahren und vorrichtung zum formpressen von profilen konstanten querschnitts aus pflanzlichen kleinteilen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3307557 1983-03-03
DE19833307557 DE3307557A1 (de) 1983-03-03 1983-03-03 Verfahren und vorrichtung zum formpressen von profilen konstanten querschnitts aus pflanzlichen kleinteilen

Publications (2)

Publication Number Publication Date
EP0118072A1 true EP0118072A1 (fr) 1984-09-12
EP0118072B1 EP0118072B1 (fr) 1986-10-29

Family

ID=6192438

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84101754A Expired EP0118072B1 (fr) 1983-03-03 1984-02-20 Procédé et installation pour le moulage par compression de profilés à section constante en particules végétales

Country Status (8)

Country Link
US (2) US4649006A (fr)
EP (1) EP0118072B1 (fr)
JP (1) JPS60500610A (fr)
AT (1) ATE23124T1 (fr)
DD (1) DD215041A5 (fr)
DE (2) DE3307557A1 (fr)
IL (1) IL71123A (fr)
WO (1) WO1984003472A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3307557A1 (de) * 1983-03-03 1984-09-06 Heggenstaller, Anton, 8892 Kühbach Verfahren und vorrichtung zum formpressen von profilen konstanten querschnitts aus pflanzlichen kleinteilen
US5059372A (en) * 1987-04-16 1991-10-22 Klais Guenter Process and apparatus for producing compressed solid briquettes
DE3916774A1 (de) * 1989-05-23 1990-11-29 Anton Heggenstaller Verfahren und vorrichtung zum pressen eines biegesteifen balkenfoermigen formkoerpers aus pflanzlichen kleinteilen
US4976905A (en) * 1989-11-01 1990-12-11 Brown Gordon E Method and apparatus for making wood product
DE3941170A1 (de) * 1989-12-13 1991-06-20 Heggenstaller Anton Gmbh Verfahren und vorrichtung zum formpressen von formkoerpern aus pflanzlichen kleinteilen
US5824246A (en) 1991-03-29 1998-10-20 Engineered Composites Method of forming a thermoactive binder composite
US5435954A (en) * 1993-10-08 1995-07-25 Riverwood International Corporation Method for forming articles of reinforced composite material
US5855832A (en) * 1996-06-27 1999-01-05 Clausi; Robert N. Method of molding powdered plant fiber into high density materials
SE0802659L (sv) * 2008-12-23 2009-10-20 Newbeam Sweden Ab Press samt förfarande för att av limpreparerad träflis forma balkar med åtminstone en väsentligen U-formad tvärsnittsdel

Citations (6)

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Publication number Priority date Publication date Assignee Title
US3078506A (en) * 1960-06-30 1963-02-26 Antrim Molding Company Inc Apparatus for molding wood particles
DE1205695B (de) * 1957-10-09 1965-11-25 Ludwig Knell Anlage zur fortlaufenden Herstellung und Pressung von Formkoerpern, insbesondere einseitig geschlossenen Hohlkoerpern aus beleimten Holz-spaenen, Fasern od. dgl.
US3664797A (en) * 1968-01-29 1972-05-23 Pierre Sorbier Apparatus for molding articles from a paste-like material
US3762852A (en) * 1971-03-16 1973-10-02 A Boffet Molding press for paste like material
US3933968A (en) * 1968-01-29 1976-01-20 Pierre Sorbier Method of moulding articles from a paste like material
FR2337622A1 (fr) * 1976-01-09 1977-08-05 Anvar Procede de moulage d'objets en particules agglomerees et dispositif pour la mise en oeuvre de ce procede

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AT29971B (de) * 1906-06-20 1907-09-25 Richard Frehierr V Mattencloit Presse zur Herstellung von die Form beibehaltenden Preßlingen aus körnigem oder faserigem Material.
AT34010B (de) * 1907-02-26 1908-08-10 Richard Freiherr V Mattencloit Presse zur Herstellung von die Form beibehaltenden Preßlingen.
CH58348A (de) * 1912-10-15 1913-03-01 Wehrli & Dr Eduardoff Verfahren und Vorrichtung zur Herstellung gepreßter Körper
US1597571A (en) * 1923-12-03 1926-08-24 Beaudequin Jacques Process for manufacturing briquettes
DE437528C (de) * 1924-10-15 1926-11-23 Gustav Hilger Verfahren und Vorrichtung zur Stueckigmachung von Feinkohle
US2351713A (en) * 1938-12-21 1944-06-20 Boonton Molding Company Molding
FR1207054A (fr) * 1958-05-29 1960-02-15 Procédé et installation pour le moulage d'emballage ou autres objets creux en matière agglomérée non fluente, thermo-durcissable
US3274309A (en) * 1965-06-01 1966-09-20 Schreieck Walter Method for producing building elements and especially building stones of sintered material or the like
US3571847A (en) * 1968-08-14 1971-03-23 Robert Palmai Apparatus for forming plastic fiber filters
FR2082442A5 (fr) * 1970-03-16 1971-12-10 Boffet Ets
US3687877A (en) * 1970-04-29 1972-08-29 Ind De Cascarillas Ciscana Sa Method of producing molded articles from coffee bean hulls
DE2162850C2 (de) * 1971-12-17 1982-09-16 Henke Maschinenfabrik Gmbh & Co Kg, 4952 Porta Westfalica Vorrichtung zum Auswaschen von Feinanteilen aus der Sichtfläche von frisch gepreßten Betonplatten o.dgl.
US3997643A (en) * 1973-02-28 1976-12-14 Furnier-Und Sperrholzwerk J. F. Werz Jr. Kg Werzalit - Pressholzwerk Method of making shaped articles
US3905735A (en) * 1973-09-28 1975-09-16 Gen Motors Corp Stack molding apparatus
US3924995A (en) * 1974-12-23 1975-12-09 Electromould Engineering Limit Apparatus for molding articles
DE2500706B2 (de) * 1975-01-09 1979-05-03 Kuesters, Eduard, 4150 Krefeld Presse zur Ausübung einer Flächen pressung
FR2430307A1 (fr) * 1978-07-05 1980-02-01 Carnaud Sa Procede de fabrication de pieces a base de particules de bois, dispositif pour la mise en oeuvre de ce procede et pieces fabriquees
DE3035701C2 (de) * 1980-09-22 1982-12-23 Anton 8892 Kühbach Heggenstaller Palettenfuß und Verfahren zu seiner Herstellung
GB2096532B (en) * 1981-04-07 1985-03-27 Forticrete Ltd Making constructional blocks of accurate height
US4559194A (en) * 1982-01-29 1985-12-17 Anton Hegenstaller Pallet cleat and method of making same
DE3321307C2 (de) * 1983-06-13 1986-06-19 Anton 8892 Kühbach Heggenstaller Verfahren zur Herstellung von Tragriegeln, Profilstäben, Balken u.dgl. aus gepreßten pflanzlichen Kleinteilen
DE3307557A1 (de) * 1983-03-03 1984-09-06 Heggenstaller, Anton, 8892 Kühbach Verfahren und vorrichtung zum formpressen von profilen konstanten querschnitts aus pflanzlichen kleinteilen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1205695B (de) * 1957-10-09 1965-11-25 Ludwig Knell Anlage zur fortlaufenden Herstellung und Pressung von Formkoerpern, insbesondere einseitig geschlossenen Hohlkoerpern aus beleimten Holz-spaenen, Fasern od. dgl.
US3078506A (en) * 1960-06-30 1963-02-26 Antrim Molding Company Inc Apparatus for molding wood particles
US3664797A (en) * 1968-01-29 1972-05-23 Pierre Sorbier Apparatus for molding articles from a paste-like material
US3933968A (en) * 1968-01-29 1976-01-20 Pierre Sorbier Method of moulding articles from a paste like material
US3762852A (en) * 1971-03-16 1973-10-02 A Boffet Molding press for paste like material
FR2337622A1 (fr) * 1976-01-09 1977-08-05 Anvar Procede de moulage d'objets en particules agglomerees et dispositif pour la mise en oeuvre de ce procede

Also Published As

Publication number Publication date
US4649006A (en) 1987-03-10
DD215041A5 (de) 1984-10-31
IL71123A (en) 1988-04-29
ATE23124T1 (de) 1986-11-15
DE3461061D1 (en) 1986-12-04
JPS60500610A (ja) 1985-05-02
DE3307557A1 (de) 1984-09-06
IL71123A0 (en) 1984-06-29
EP0118072B1 (fr) 1986-10-29
WO1984003472A1 (fr) 1984-09-13
US4705472A (en) 1987-11-10

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