EP0342196B1 - Device for straightening boards and the like - Google Patents

Device for straightening boards and the like Download PDF

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Publication number
EP0342196B1
EP0342196B1 EP88901030A EP88901030A EP0342196B1 EP 0342196 B1 EP0342196 B1 EP 0342196B1 EP 88901030 A EP88901030 A EP 88901030A EP 88901030 A EP88901030 A EP 88901030A EP 0342196 B1 EP0342196 B1 EP 0342196B1
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EP
European Patent Office
Prior art keywords
roller
rollers
frame
main frame
boards
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EP88901030A
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German (de)
French (fr)
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EP0342196A1 (en
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Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
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Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
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Priority to AT88901030T priority Critical patent/ATE68396T1/en
Publication of EP0342196A1 publication Critical patent/EP0342196A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27H—BENDING WOOD OR SIMILAR MATERIAL; COOPERAGE; MAKING WHEELS FROM WOOD OR SIMILAR MATERIAL
    • B27H1/00—Bending wood stock, e.g. boards
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007—Running or continuous length work
    • Y10T156/1023—Surface deformation only [e.g., embossing]

Definitions

  • the invention relates to a device for leveling boards and the like. by means of rollers arranged in a frame, between which the boards are passed.
  • the boards produced in the described chipless cutting technique and the like have a twist in addition to the curvature mentioned, i.e. they are rotated or coiled around their longitudinal axis. This deformation precludes automated further processing of the boards in numerous applications.
  • the twist that occurs is stronger, the more inclined the cutting edges separating the board are from the longitudinal direction of the trunk.
  • the object of the invention is therefore to provide a device for straightening boards and the like. to create, which makes it possible to permanently eliminate the described twist of the boards in the simplest possible workflow.
  • a board guide channel extending in the longitudinal direction of the frame and having a twist approximately about the longitudinal axis of the frame is formed in that several pairs of rollers are connected in series, each of which is pivoted about the longitudinal axis of the frame relative to the respective previous pair of rollers.
  • the boards pass through the board guide channel formed in this way, which has a swirl opposite to the swirl of the boards.
  • the boards experience a continuous twist in the opposite direction to their twist.
  • the boards are straightened so that they then have a permanent flat shape.
  • the device according to the invention can therefore be arranged directly after the device for cutting the boards without cutting or with the interposition of a straightening bending device.
  • Another embodiment within the scope of the invention provides that two conveyor belts extend from a pair of input rollers to a pair of output rollers interlaced with one another, that the two mutually facing strands of the two conveyor belts having a swirl form the board guide channel between them, and that at least one of the conveyor belts is driven is.
  • the boards are guided completely continuously by the conveyor belts.
  • the pairs of rollers can be pivoted so that a different amount of twist of the board guide channel can be set in accordance with the respective requirements.
  • the respective lower rollers of each pair of rollers or the rollers guiding the lower conveyor belt are expediently foldable downward so that wood residues, which can occur, for example, in the case of defective wood, can be easily removed from the device.
  • the two rollers of each pair of rollers are mutually adjustable in order to enable adaptation to different board thicknesses.
  • the device shown in FIGS. 1 to 4 has a frame t which essentially consists of two portal-like stands 2 and 3 at the entrance and exit of the device and of an axis 4 which connects the two stands 2, 3 and extends in the longitudinal direction of the frame consists.
  • the axis 4 forms a pivot axis for a plurality of roller frames 5, which are connected in series and each have a pair of rollers 6, which consists of an upper roller 7 and a lower roller 8 arranged parallel and at a distance from it.
  • the roller frame 5a arranged at the frame entrance is shown with normal lines.
  • the roller frame 5 arranged at the exit is shown in FIG. 2 in thin lines.
  • the roller frame 5 is pivoted about the axis 4 with respect to the roller frame 5a.
  • the pivot axis 4 extends centrally in the first roller frame 5a, ie the dimension a entered there is equal to the dimension b.
  • the pivot axis 4 runs off-center, ie the dimension a is significantly smaller than the dimension b.
  • all the roller frames 5 are pivoted or interleaved by a certain angular amount about the longitudinal axis of the frame relative to the previous roller frame.
  • FIG. 2 This creates a board guide channel 9 (FIG. 2) running in the longitudinal direction of the frame, which has a swirl over its entire length.
  • the boards 10 to be straightened (FIG. 1) run through this board guide channel 9 and, in their initial state, also have a swirl which is opposite to the swirl of the board guide channel 9. After passing through the board guide channel 9, the boards 10 emerge straight, as indicated in FIG. 1.
  • the swirl angle of the board guide channel 9 is selected by pivoting the roller frame 5 so that it causes a permanent deformation in the boards 10 to be machined, which just compensates for the original swirl of the boards 10.
  • each of the roller frames 5 is connected to a swivel drive 11, which is formed, for example, by a pressure medium cylinder which engages on a lateral arm 12 of the roller frame 5.
  • At least one roller 8 in the output-side roller frame 5 is provided with a roller drive 12 which serves to convey the board 10 until it exits the device.
  • each roller frame 5 or 5a can be folded down, as shown in FIG. 3.
  • a pressure medium cylinder 14 which forms a folding drive, engages on an arm 15 of the frame part 13.
  • Leftover wood or board parts that have accumulated or clamped in the board guide channel 9 can be removed in this way simply by opening the rollers 8, these residues either falling off by themselves or being easily removed.
  • Fig. 4 shows in a plan view the lateral offset of the successive roller frame 5.
  • Fig. 4 also shows that the boards 10 to be straightened in the most important application of the device according to the invention are separated from a laterally flattened log 16 by a knife 17.
  • a straightening bending device 18 which eliminates a curvature of the boards 10
  • the boards 10 immediately enter the device which eliminates the twist of the boards.
  • the size and direction of this swirl essentially depends on the inclination of the cutting edges 17.
  • the modified device shown in FIGS. 5 to 7 differs from the device described above and shown in FIGS. 1 to 4 essentially only in that the individual roller frames 5 connected in series can be pivoted about an approximately longitudinal axis of the frame coinciding with the board guide channel 9 .
  • the roller frames 5 each form a ring in which the rollers 7, 8 are mounted.
  • These ring-shaped roller frames 5 are each guided in a link guide in a guide part 19 on a circular path, in the center of which is the longitudinal axis of the frame.
  • roller frame 5 is designed to be foldable.
  • a worm drive 21 is provided as a swivel drive, which drives a worm segment 22 on the annular roller frame 5 by means of a servomotor 23.
  • the upper roller 7 is adjustable relative to the lower roller 8 in each roller frame 5 or 5a.
  • the upper roller 7 can be pivoted on lateral supports 24 about a pivot axis 25.
  • the swivel adjustment is carried out by a pressure medium cylinder 26.
  • Two conveyor belts 27, 28 extend from a pair of input rollers 29, 30 to a pair of output rollers 31, 32 which are entangled with them.
  • the two conveyor belts 27, 28 thus have a twist as seen in their longitudinal direction; they form between them the board guide channel 9, also provided with a twist, through which the board 10 to be straightened runs.
  • the set conveyor belts 27, 28 can be rubber bands provided with a fabric insert or metallic link belts or chain belts.
  • each crowned support rollers 35, 36 may be arranged (Fig. 10). At least one of the two conveyor belts 27, 28 is driven so that the boards 10 passing through are completely conveyed out of the device.
  • Fig. 10 it is shown that the pair of rollers 31, 32 on the output side can be pivoted relative to the pair of rollers 29, 30 on the input side in order to change the twist angle of the board guide channel 9 formed in order to adapt to the respective work requirements.
  • a swivel drive 37 is used for this purpose, which guides a roller frame, which is designed here in two parts, on a circular path formed by a circular cutout 39.
  • an adjustment drive 40 is provided on the two pairs of rollers 29, 30 and 31, 32, which, in the manner already described, adjusts the upper roller 29 and 31 relative to the lower roller 30 and 32 to adapt to different board thicknesses enables.
  • rollers 30, 32 carrying the lower conveyor track 28 can be folded down in order to open the board guide channel 9 when wood fragments obtained there have to be removed.
  • roller pairs 7, 8 arranged one behind the other can also be aligned such that a curved course of the board guide channel 9 is achieved. In this way it is possible to align the board 10 in its longitudinal direction, so that a separate straightening device 18 can be omitted.

Abstract

PCT No. PCT/EP88/00005 Sec. 371 Date Jun. 19, 1989 Sec. 102(e) Date Jun. 19, 1989 PCT Filed Jan. 5, 1988 PCT Pub. No. WO88/05371 PCT Pub. Date Jul. 28, 1988.Boards that have been separated by a chipless cutting method using an inclined blade, are twisted and, in most instances, this twist has to be corrected before boards that have been produced in this manner can be used. An apparatus in which a plurality of pairs of rollers are arranged in tandem withing a main frame is used to do this. Each pair of rollers can be pivotted about the longitudinal axis of the main frame relative to the proceding pair. This forms a board guide channel that extends in the longitudinal direction of the main frame and which is twisted approximately about the longitudinal axis of the main frame. The boards that are to be straightened pass through the board guide channel and are permanently deformed, which compensates for the twist that originally existed in the board.

Description

Die Erfindung betrifft eine Vorrichtung zum Richten von Brettern u.dgl. mittels in einem Gestell angeordneten Rollen, zwischen denen die Bretter hindurchgeführt werden.The invention relates to a device for leveling boards and the like. by means of rollers arranged in a frame, between which the boards are passed.

Bei einer bekannten Richtbiegevorrichtung (DE-PS 32 07 548) werden Bretter und insbesondere in spanloser Schneidtechnik von den Seiten eines angeflachten Holzstammes abgetrennte Bretter und ähnliche flache Holzerzeugnisse, die eine Krümmung um eine Querachse aufweisen, zwischen Rollen geradegerichtet.In a known straightening bending device (DE-PS 32 07 548), boards and in particular in chipless cutting technology, boards separated from the sides of a flattened log and similar flat wood products which have a curvature about a transverse axis are straightened between rollers.

Vor allem die in der beschriebenen spanlosen Schneidtechnik hergestellten Bretter u.dgl. weisen aber in vielen Fällen zusätzlich zu der erwähnten Krümmung noch einen Drall auf, d.h. sie sind um ihre Längsachse gedreht oder gewendelt. Diese Verformung schließt in zahlreichen Anwendungsfällen eine automatisierte Weiterverarbeitung der Bretter aus. Der auftretende Drall ist umso stärker, je schräger die das Brett abtrennenden Schneiden gegenüber der Stammlängsrichtung angestellt sind.Above all, the boards produced in the described chipless cutting technique and the like. but in many cases have a twist in addition to the curvature mentioned, i.e. they are rotated or coiled around their longitudinal axis. This deformation precludes automated further processing of the boards in numerous applications. The twist that occurs is stronger, the more inclined the cutting edges separating the board are from the longitudinal direction of the trunk.

Aufgabe der Erfindung ist es daher, eine Vorrichtung zum Richten von Brettern u.dgl. zu schaffen, die es ermöglicht, den beschriebenen Drall der Bretter in einem möglichst einfachen Arbeitsablauf bleibend zu beseitigen.The object of the invention is therefore to provide a device for straightening boards and the like. to create, which makes it possible to permanently eliminate the described twist of the boards in the simplest possible workflow.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß ein sich in Längsrichtung des Gestells erstreckender, einen Drall angenähert um die Gestellängsachse aufweisender brettführungskanal dadurch gebildet wird, daß mehrere Rollenpaare hintereinandergeschaltet sind, die jeweils um die Gestellängsachse gegenüber dem jeweils vorhergehenden Rollenpaar verschwenkt sind.This object is achieved in that a board guide channel extending in the longitudinal direction of the frame and having a twist approximately about the longitudinal axis of the frame is formed in that several pairs of rollers are connected in series, each of which is pivoted about the longitudinal axis of the frame relative to the respective previous pair of rollers.

Die Bretter durchlaufen unmittelbar nach ihrer Herstellung den so gebildeten Brettführungskanal, der einen dem Drall der Bretter entgegengesetzten Drall aufweist. Dadurch erfahren die bretter beim Durchlaufen eine kontinuierliche Verdrehung entgegengesetzt zu ihrer Drallrichtung. Die Bretter werden dabei so gerichtet, daß sie anschließend eine bleibende ebene Form haben.Immediately after their manufacture, the boards pass through the board guide channel formed in this way, which has a swirl opposite to the swirl of the boards. As a result, the boards experience a continuous twist in the opposite direction to their twist. The boards are straightened so that they then have a permanent flat shape.

Da die Bretter mit verhältnismäßig hoher Geschwindigkeit durch den Brettführungskanal hindurchtreten können, ist eine Anpassung-an die ebenfalls sehr hohen Arbeitsgeschwindigkeiten des spanlosen Abtrennens von Brettern gegeben. Die erfindungsgemäße Vorrichtung kann daher der Vorrichtung zum spanlosen Abtrennen der Bretter unmittelbar oder unter Zwischenschaltung einer Richtbiegevorrichtung nachgeordnet werden.Since the boards can pass through the board guide channel at a relatively high speed, there is an adaptation to the also very high working speeds of the chipless cutting of boards. The device according to the invention can therefore be arranged directly after the device for cutting the boards without cutting or with the interposition of a straightening bending device.

Eine im Rahmen des Erfindungsgedankens liegende andere Ausführungsform sieht vor, daß sich zwei Förderbänder von einem Eingangsrollenpaar zu einem hiergegen verschränkten Ausgangsrollenpaar erstrecken, daß die beiden einander zugekehrten Trumms der beiden einen Drall aufweisenden Förderbänder zwischen sich den Brettführungskanal bilden, und daß mindestens eines der Förderbänder angetrieben ist. Die Bretter werden durch die Förderbänder völlig kontinuierlich geführt.Another embodiment within the scope of the invention provides that two conveyor belts extend from a pair of input rollers to a pair of output rollers interlaced with one another, that the two mutually facing strands of the two conveyor belts having a swirl form the board guide channel between them, and that at least one of the conveyor belts is driven is. The boards are guided completely continuously by the conveyor belts.

In Weiterbildung des Erfindungsgedankens ist vorgesehen, daß die Rollenpaare schwenkbar sind, damit in Anpassung an die jeweiligen Anforderungen ein unterschiedlich großer Drall des Brettführungskanals eingestellt werden kann.In a further development of the inventive concept, it is provided that the pairs of rollers can be pivoted so that a different amount of twist of the board guide channel can be set in accordance with the respective requirements.

Zweckmäßigerweise sind die jeweils unteren Rollen jedes Rollenpaars bzw. die das untere Förderband führenden Rollen nach unten abklappbar, damit Holzreste, die beispielsweise bei fehlerhaftem Holz anfallen können, leicht aus der Vorrichtung entfernt werden können.The respective lower rollers of each pair of rollers or the rollers guiding the lower conveyor belt are expediently foldable downward so that wood residues, which can occur, for example, in the case of defective wood, can be easily removed from the device.

In Ausgestaltung des Erfindungsgedankens ist vorgesehen, daß die beiden Rollen jedes Rollenpaares gegeneinander verstellbar sind, um eine Anpassung an unterschiedliche Brettdicken zu ermöglichen.In an embodiment of the inventive concept, it is provided that the two rollers of each pair of rollers are mutually adjustable in order to enable adaptation to different board thicknesses.

Weitere vorteilhafte Ausgestaltungen des Erfindungsgedankens sind Gegenstand weiterer Unteransprüche.Further advantageous embodiments of the inventive concept are the subject of further dependent claims.

Die Erfindung wird nachfolgend an Ausführungsbeispielen näher erläutert, die in der Zeichnung dargestellt sind. Es zeigt:

  • Fig. 1 eine Vorrichtung zum Richten von Brettern in vereinfachter Darstellungsweise in einer Seitenansicht und teilweise im Längsschnitt,
  • Fig. 2 einen Schnitt längs der Linie II-II in Fig. 1,
  • Fig. 3 eine Ansicht ähnlich der Fig. 2 bei abgeklappter unterer Rolle,
  • Fig. 4 eine vereinfachte Draufsicht auf die Vorrichtung nach den Fig. 1 bis 3,
  • Fig. 5 in einer Darstellung entsprechend der Fig. 1 eine abgewandelte Ausführungsform der Vorrichtung,
  • Fig. 6 einen Schnitt längs der Linie VI-VI in Fig. 5,
  • Fig. 7 eine Ansicht ähnlich der Fig. 6 mit abgeklappter unterer Rolle,
  • Fig. 8 in einer Seitenansicht und teilweise im Längsschnitt eine weitere Ausführungsform einer Vorrichtung nach der Erfindung,
  • Fig. 9 eine Ansicht in Richtung des Pfeiles IX in Fig. 8 und
  • Fig. 10 einen Schnitt längs der Linie X-X in Fig. 8.
The invention is explained in more detail below using exemplary embodiments which are illustrated in the drawing. It shows:
  • 1 is a device for straightening boards in a simplified representation in a side view and partially in longitudinal section,
  • 2 shows a section along the line II-II in FIG. 1,
  • 3 is a view similar to FIG. 2 with the lower roll folded down,
  • 4 shows a simplified top view of the device according to FIGS. 1 to 3,
  • 5 in a representation corresponding to FIG. 1, a modified embodiment of the device,
  • 6 shows a section along the line VI-VI in FIG. 5,
  • 7 is a view similar to FIG. 6 with the lower roll folded down,
  • 8 is a side view and partially in longitudinal section of a further embodiment of a device according to the invention,
  • Fig. 9 is a view in the direction of arrow IX in Fig. 8 and
  • 10 shows a section along the line XX in FIG. 8.

Die in den Fig. 1 bis 4 gezeigte Vorrichtung weist ein Gestell t auf, das im wesentlichen aus zwei portalartigen Ständern 2 und 3 am Eingang und am Ausgang der Vorrichtung und aus einer die beiden Ständer 2, 3 verbindenden, sich in Gestellängsrichtung erstreckenden Achse 4 besteht.The device shown in FIGS. 1 to 4 has a frame t which essentially consists of two portal-like stands 2 and 3 at the entrance and exit of the device and of an axis 4 which connects the two stands 2, 3 and extends in the longitudinal direction of the frame consists.

Die Achse 4 bildet eine Schwenkachse für mehrere Rollenrahmen 5, die hintereinandergeschaltet sind und jeweils ein Rollenpaar 6 aufweisen, das aus einer oberen Rolle 7 und einer parallel und im Abstand dazu angeordneten unteren Rolle 8 besteht.The axis 4 forms a pivot axis for a plurality of roller frames 5, which are connected in series and each have a pair of rollers 6, which consists of an upper roller 7 and a lower roller 8 arranged parallel and at a distance from it.

In Fig. 2 ist der am Gestelleingang angeordnete Rollenrahmen 5a mit normaler Linien dargestellt. Der am Ausgang angeordnete Rollenrahmen 5 ist in Fig. 2 in dünnen Linien dargestellt. Man erkennt, daß der Rollenrahmen 5 gegenüber dem Rollenrahmen 5a um die Achse 4 verschwenkt ist. Man erkennt weiter, daß die Schwenkachse 4 beim ersten Rollenrahmen 5a mittig verläuft, d.h. das dort eingetragene Maß a ist gleich dem Maß b. beim Rollenrahmen 5 verläuft die Schwenkachse 4 außermittig, d.h. das Maß a ist wesentlich kleiner als das Maß b. In entsprechender Weise sind alle Rollenrahmen 5 jeweils gegenüber dem vorhergehenden Rollenrahmen um einen bestimmten Winkelbetrag um die Gestellängsachse verschwenkt oder verschränkt. Dadurch entsteht zwischen den Rollen 7, 8 ein in Gestellängsrichtung verlaufender Brettführungskanal 9 (Fig. 2), der über seine gesamte Länge einen Drall aufweist. Durch diesen Brettführungskanal 9 laufen die zu richtenden Bretter 10 (Fig. 1), die in ihrem Ausgangszustand ebenfalls einen Drall aufweisen, der dem Drall des Brettführungskanals 9 entgegengerichtet ist. Nach dem Durchlaufen des Brettführungskanals 9 treten die Bretter 10 gerade gerichtet aus, wie in Fig. 1 angedeutet ist. Der Drallwinkel des Brettführungskanals 9 wird durch Schwenken der Rollenrahmen 5 so gewählt, daß er bei den jeweils zu bearbeitenden Brettern 10 eine bleibende Verformung hervorruft, die gerade den ursprünglichen Drall der Bretter 10 kompensiert.2, the roller frame 5a arranged at the frame entrance is shown with normal lines. The roller frame 5 arranged at the exit is shown in FIG. 2 in thin lines. It can be seen that the roller frame 5 is pivoted about the axis 4 with respect to the roller frame 5a. It can also be seen that the pivot axis 4 extends centrally in the first roller frame 5a, ie the dimension a entered there is equal to the dimension b. with the roller frame 5, the pivot axis 4 runs off-center, ie the dimension a is significantly smaller than the dimension b. In a corresponding manner, all the roller frames 5 are pivoted or interleaved by a certain angular amount about the longitudinal axis of the frame relative to the previous roller frame. This creates a board guide channel 9 (FIG. 2) running in the longitudinal direction of the frame, which has a swirl over its entire length. The boards 10 to be straightened (FIG. 1) run through this board guide channel 9 and, in their initial state, also have a swirl which is opposite to the swirl of the board guide channel 9. After passing through the board guide channel 9, the boards 10 emerge straight, as indicated in FIG. 1. The swirl angle of the board guide channel 9 is selected by pivoting the roller frame 5 so that it causes a permanent deformation in the boards 10 to be machined, which just compensates for the original swirl of the boards 10.

Um eine Anpassungsmöglichkeit an unterschiedliche Brettverformungen zu ermöglichen, ist jeder der Rollenrahmen 5 mit einem Schwenkantrieb 11 verbunden, der beispielsweise durch einen Druckmittelzylinder gebildet wird, der an einem seitlichen Arm 12 des Rollenrahmens 5 angreift.In order to enable adaptation to different board deformations, each of the roller frames 5 is connected to a swivel drive 11, which is formed, for example, by a pressure medium cylinder which engages on a lateral arm 12 of the roller frame 5.

Mindestens eine Rolle 8 im ausgangsseitigen Rollenrahmen 5 ist mit einem Rollenantrieb 12 versehen, der dazu dient, das Brett 10 bis zum Austritt aus der Vorrichtung zu fördern.At least one roller 8 in the output-side roller frame 5 is provided with a roller drive 12 which serves to convey the board 10 until it exits the device.

Um den Brettführungskanal 9 öffnen zu können, ist jeweils das untere Teil 13 jedes Rollenrahmens 5 bzw. 5a nach unten abklappbar, wie in Fig. 3 dargestellt ist. Hierzu greift ein Druckmittelzylinder 14, der einen Klappantrieb bildet, an einem Arm 15 des Rahmenteils 13 an. Holzreste oder Bretteile, die sich im Brettführungskanal 9 angesammelt bzw. festgeklemmt haben, können in dieser Weise einfach durch Aufklappen der Rollen 8 entfernt werden, wobei diese Reste entweder von selbst herabfallen oder leicht herausgenommen werden können.In order to be able to open the board guide channel 9, the lower part 13 of each roller frame 5 or 5a can be folded down, as shown in FIG. 3. For this purpose, a pressure medium cylinder 14, which forms a folding drive, engages on an arm 15 of the frame part 13. Leftover wood or board parts that have accumulated or clamped in the board guide channel 9 can be removed in this way simply by opening the rollers 8, these residues either falling off by themselves or being easily removed.

Fig. 4 läßt in einer Draufsicht den seitlichen Versatz der aufeinanderfolgenden Rollenrahmen 5 erkennen. Fig. 4 zeigt außerdem, daß die zu richtenden Bretter 10 beim wichtigsten Anwendungsfall der erfindungsgemäßen Vorrichtung von einem seitlich angeflachten Holzstamm 16 durch ein Messer 17 spanlos abgetrennt werden. Nach Durchlaufen einer in Fig. 4 nur schematisch angedeuteten Richtbiegevorrichtung 18, die eine Krümmung der Bretter 10 beseitigt, treten die Bretter 10 unmittelbar in die Vorrichtung ein, die den Drall der Bretter beseitigt. Die Größe und Richtung dieses Dralls hängt wesentlich von der Schrägstellung der Schneiden 17 ab.Fig. 4 shows in a plan view the lateral offset of the successive roller frame 5. Fig. 4 also shows that the boards 10 to be straightened in the most important application of the device according to the invention are separated from a laterally flattened log 16 by a knife 17. After passing through a straightening bending device 18, only schematically indicated in FIG. 4, which eliminates a curvature of the boards 10, the boards 10 immediately enter the device which eliminates the twist of the boards. The size and direction of this swirl essentially depends on the inclination of the cutting edges 17.

Die in den Fig. 5 bis 7 gezeigte abgewandelte Vorrichtung unterscheidet sich von der vorher beschriebenen und in den Fig. 1 bis 4 dargestellten Vorrichtung im wesentlichen nur dadurch, daß die einzelnen hintereinandergeschalteten Rollenrahmen 5 hierbei um eine angenähert mit dem Brettführungskanal 9 zusammenfallende Gestellängsachse schwenkbar sind. Hier bilden die Rollenrahmen 5 jeweils einen Ring, in dem die Rollen 7, 8 gelagert sind. Diese ringförmigen Rollenrahmen 5 sind jeweils in einer Kulissenführung in einem Führungsteil 19 auf einer Kreisbahn geführt, in deren Mittelpunkt die Gestellängsachse liegt.The modified device shown in FIGS. 5 to 7 differs from the device described above and shown in FIGS. 1 to 4 essentially only in that the individual roller frames 5 connected in series can be pivoted about an approximately longitudinal axis of the frame coinciding with the board guide channel 9 . Here the roller frames 5 each form a ring in which the rollers 7, 8 are mounted. These ring-shaped roller frames 5 are each guided in a link guide in a guide part 19 on a circular path, in the center of which is the longitudinal axis of the frame.

Auch hierbei ist der Rollenrahmen 5 aufklappbar ausgeführt. Am unteren Rahmenteil 13, in dem die Rolle 8 gelagert ist, greift ein Druckmittelzylinder 14, der an einem mit dem Rollenrahmen 5 verbundenen Arm 20 angebracht ist.Here, too, the roller frame 5 is designed to be foldable. A pressure medium cylinder 14, which is attached to an arm 20 connected to the roller frame 5, engages on the lower frame part 13, in which the roller 8 is mounted.

Als Schwenkantrieb ist bei der Ausführung nach den Fig. 5 bis 7 ein Schneckentrieb 21 vorgesehen, der ein Schneckensegment 22 am ringförmigen Rollenrahmen 5 mittels eines Stellmotors 23 antreibt.5 to 7, a worm drive 21 is provided as a swivel drive, which drives a worm segment 22 on the annular roller frame 5 by means of a servomotor 23.

Zur Umstellung auf unterschiedliche Brettdicken ist bei den Auführungsformen nach den Fig. 1 bis 7 vorgesehen, daß in jedem Rollenrahmen 5 bzw. 5a die obere Rolle 7 gegenüber der unteren Rolle 8 verstellbar ist. Hierzu ist die obere Rolle 7 an seitlichen Trägern 24 um eine Schwenkachse 25 schwenkbar. Die Schwenkverstellung erfolgt durch einen Druckmittelzylinder 26.To switch to different board thicknesses in the embodiment according to FIGS. 1 to 7 it is provided that the upper roller 7 is adjustable relative to the lower roller 8 in each roller frame 5 or 5a. For this purpose, the upper roller 7 can be pivoted on lateral supports 24 about a pivot axis 25. The swivel adjustment is carried out by a pressure medium cylinder 26.

In den Fig. 8 bis 10 ist eine weitere Ausführungsform der Vorrichtung gezeigt. Zwei Förderbänder 27, 28 erstrecken sich von einem Eingangsrollenpaar 29, 30 zu einem hiergegen verschränkten Ausgangsrollenpaar 31, 32. Die beiden Förderbänder 27, 28 weisen somit in ihrer Längsrichtung gesehen einen Drall auf; sie bilden zwischen sich den ebenfalls mit einem Drall versehenen Brettführungskanal 9, durch den das zu richtende Brett 10 läuft. Die geschränkten Förderbänder 27, 28 können mit einer Gewebeeinlage versehene Gummibänder oder metallische Gliederbänder bzw. Kettenbänder sein.8 to 10 show a further embodiment of the device. Two conveyor belts 27, 28 extend from a pair of input rollers 29, 30 to a pair of output rollers 31, 32 which are entangled with them. The two conveyor belts 27, 28 thus have a twist as seen in their longitudinal direction; they form between them the board guide channel 9, also provided with a twist, through which the board 10 to be straightened runs. The set conveyor belts 27, 28 can be rubber bands provided with a fabric insert or metallic link belts or chain belts.

Um zu verhindern, daß das durch den Brettführungskanal 9 hindurchtretende brett 10 im mittleren bereich der Förderbänder 27, 28 die beiden einander zugekehrten Trumms 33, 34 auseinanderdrückt, können vorzugsweise im mittleren Bereich der Förderbänder 27, 28 an der Rückseite der beiden Trumms 33, 34 jeweils ballige Stützrollen 35, 36 angeordnet sein (Fig. 10). Mindestens eines der beiden Förderbänder 27, 28 ist angetrieben, damit die hindurchtretenden Bretter 10 vollständig aus der Vorrichtung herausgefördert werden.In order to prevent the board 10 passing through the board guide channel 9 in the central region of the conveyor belts 27, 28 from pushing apart the two trumps 33, 34 facing one another, preferably in the central region of the conveyor belts 27, 28 on the rear side of the two trums 33, 34 each crowned support rollers 35, 36 may be arranged (Fig. 10). At least one of the two conveyor belts 27, 28 is driven so that the boards 10 passing through are completely conveyed out of the device.

In Fig. 10 ist dargestellt, daß das Rollenpaar 31, 32 an der Ausgangsseite gegenüber dem Rollenpaar 29, 30 an der Eingangsseite verschwenkbar ist, um den Drallwinkel des gebildeten Brettführungskanals 9 in Anpassung an die jeweiligen Arbeitserfordernisse zu verändern. Hierzu dient ein Schwenkantrieb 37, der einen hier zweiteilig ausgeführten Rollenrahmen auf einer durch einen kreisförmigen Ausschnitt 39 gebildeten Kreisbahn führt.In Fig. 10 it is shown that the pair of rollers 31, 32 on the output side can be pivoted relative to the pair of rollers 29, 30 on the input side in order to change the twist angle of the board guide channel 9 formed in order to adapt to the respective work requirements. A swivel drive 37 is used for this purpose, which guides a roller frame, which is designed here in two parts, on a circular path formed by a circular cutout 39.

Auch bei dieser Ausführungsform ist an den beiden Rollenpaaren 29, 30 bzw. 31, 32 ein Verstellantrieb 40 vorgesehen, der in der schon beschriebenen Weise eine Verstellung der oberen Rolle 29 bzw. 31 gegenüber der unteren Rolle 30 bzw. 32 zur Anpassung an unterschiedliche Brettdicken ermöglicht.In this embodiment, too, an adjustment drive 40 is provided on the two pairs of rollers 29, 30 and 31, 32, which, in the manner already described, adjusts the upper roller 29 and 31 relative to the lower roller 30 and 32 to adapt to different board thicknesses enables.

Auch bei der Ausführungsform nach den Fig. 8 bis 10 kann vorgesehen sein, die das untere Förderbahn 28 tragenden Rollen 30, 32 nach unten abklappbar auszuführen, um den Brettführungskanal 9 zu öffnen, wenn dort angefallene Holzbruchstücke entfernt werden müssen.Also in the embodiment according to FIGS. 8 to 10, it can be provided that the rollers 30, 32 carrying the lower conveyor track 28 can be folded down in order to open the board guide channel 9 when wood fragments obtained there have to be removed.

Allen dargestellten Ausführungsbeispielen ist gemeinsam, daß eine seitliche Verstellmöglichkeit des gesamten Gestells 1 vorgesehen werden kann, die durch die Pfeile 41 in den Fig. 2, 6 und 9 angedeutet ist.All of the illustrated exemplary embodiments have in common that a lateral adjustment possibility of the entire frame 1 can be provided, which is indicated by the arrows 41 in FIGS. 2, 6 and 9.

Bei den Ausführungsformen nach den Fig. 1 bis 7 können die hintereinander angeordneten Rollenpaare 7, 8 auch so ausgerichtet werden, daß ein gekrümmter Verlauf des Brettführungskanals 9 erreicht wird. Auf diese Weise ist es möglich, das Brett 10 auch in seiner Längsrichtung auszurichten, so daß eine gesonderte Richtvorrichtung 18 entfallen kann.In the embodiments according to FIGS. 1 to 7, the roller pairs 7, 8 arranged one behind the other can also be aligned such that a curved course of the board guide channel 9 is achieved. In this way it is possible to align the board 10 in its longitudinal direction, so that a separate straightening device 18 can be omitted.

Claims (14)

1. Apparatus to straighten boards or the like by means of rollers that are arranged within a main frame, between which the boards are passed, characterised in that a board guide channel (9) that extends in the longitudinal direction of the main frame (1) and is twisted approximately about the longitudinal axis of the frame is formed in that a plurality of pairs of rollers (7, 8) are arranged in tandem, each being pivotted about the longitudinal axis of the frame relative to the preceding pair of rollers.
2. Apparatus according to claim 1, characterised in that each roller pair (7, 8) is supported in a roller frame (5, 5a) that can be pivotted within the main frame about a roller pivotting axis that runs approximately in the longitudinal direction of the main frame.
3. Apparatus according to claim 2, characterised in that the roller pivotting axis (4) is outside the board guide channel (9).
4. Apparatus according to claim 3, characterised in that the pivotting axis (4) is approximately on the upper edge of the roller frame (5, 5a) and with the roller frames that are arranged in tandem each such frame is offset laterally relative to the preceding frame, and in the same direction.
5. Apparatus according to claim 3, characterised in that the pivotting axis is approximately in the board guide channel (9); and in that the roller frames (5) are guided so as to pivot within the main frame, along an arc-shaped guide (19).
6. Apparatus according to claim 2, characterised in that the roller frames (5, 5a) can each be swung out of position so that the lower roller (8) can be swung down relative to the upper roller (7).
7. Apparatus according to claim 1, characterised in that at least one roller (8) that is arranged at the exit from the main frame (1) is connected to a roller-drive system (12).
8. Apparatus according to claim 2, characterised in that each roller frame (5) is provided with a separate pivot drive (12).
9. Apparatus to straighten boards or the like by means of rollers that are arranged within a frame, between which the boards are passed, characterised in that a board guide channel (9) that extends in the longitudinal direction of the main frame (1) and is twisted approximately about the longitudinal axis of the frame is formed in that two conveyor belts (27, 28) extend from a pair of entrance rollers (20, 30) to a pair of exit rollers (31, 32); in that the two runs (33,34) of the two conveyor belts (27, 28), which are twisted, that face each other, form a board guide channel (9) between themselves; and in that at least one of the conveyor belts (27, 28, respectively) is driven.
10. Apparatus according to claim 9, characterised in that, on the back of each of the runs (33, 34) of the conveyor belts (27, 28) that face each other there is in each instance at least one supporting roller (35, 36).
11. Apparatus according to claim 9, characterised in that the two rollers (30, 32) that guide the lower conveyor belt (28) can be swung down.
12. Apparatus according to one of the claims 1 to 11 characterised in that the two rollers (7, 8; 29, 30; 31, 32) of each pair of rollers can be adjusted relative to each other.
13. Apparatus according to one of the claims 1 to 12, characterised in that the main frame (1) can be moved transversely to the longitudinal axis of the main frame.
14. Apparatus according to claim 1, characterised in that the board guide channel (9) is curved.
EP88901030A 1987-01-16 1988-01-05 Device for straightening boards and the like Expired - Lifetime EP0342196B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88901030T ATE68396T1 (en) 1987-01-16 1988-01-05 DEVICE FOR ADJUSTING BOARDS AND THE LIKE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3701127 1987-01-16
DE19873701127 DE3701127A1 (en) 1987-01-16 1987-01-16 DEVICE FOR LEVELING BOARDS AND THE LIKE

Publications (2)

Publication Number Publication Date
EP0342196A1 EP0342196A1 (en) 1989-11-23
EP0342196B1 true EP0342196B1 (en) 1991-10-16

Family

ID=6318946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88901030A Expired - Lifetime EP0342196B1 (en) 1987-01-16 1988-01-05 Device for straightening boards and the like

Country Status (8)

Country Link
US (1) US4977940A (en)
EP (1) EP0342196B1 (en)
JP (1) JPH02501910A (en)
AT (1) ATE68396T1 (en)
CA (1) CA1298172C (en)
DE (2) DE3701127A1 (en)
FI (1) FI86971C (en)
WO (1) WO1988005371A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3940443A1 (en) * 1989-12-07 1991-06-13 Linck Masch Gatterlinck DEVICE FOR TURNING BOARDS AND THE LIKE
DE3940614A1 (en) * 1989-12-08 1991-06-13 Linck Masch Gatterlinck METHOD FOR TURNING BOARDS AND THE LIKE
DE4012645C1 (en) * 1990-04-20 1991-07-18 Gebrueder Linck Maschinenfabrik "Gatterlinck" Gmbh & Co Kg, 7602 Oberkirch, De
DE4234236A1 (en) * 1992-10-10 1994-04-14 Linck Masch Gatterlinck Method and device for straightening wooden slats
US5419382A (en) * 1993-11-18 1995-05-30 Hartco Flooring Company Veneer flattening apparatus and method
DE4419682A1 (en) 1994-06-06 1995-12-07 Linck Masch Gatterlinck Method and device for producing wooden slats
US5881786A (en) * 1997-06-10 1999-03-16 Weyerhaeuser Company Method of producing wood strips for conversion into composite lumber products
CN112339029B (en) * 2020-10-22 2022-05-17 熊小兰 Rubbing board bar scraping machine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1772139A (en) * 1929-01-07 1930-08-05 Philadelphia Lawn Mower Compan Twisting machine
US2574248A (en) * 1948-11-19 1951-11-06 Jonas H Crowson Pole straightener
US3099301A (en) * 1958-08-29 1963-07-30 Henry M Bennett Method of peg bundling and straightening lumber
US2973793A (en) * 1958-10-31 1961-03-07 Koppers Co Inc Process of straightening crooked wooden poles and piles
DE1296115B (en) * 1965-03-17 1969-05-29 Glueck Franz Device for straightening twisted profile rails
US4139407A (en) * 1976-09-27 1979-02-13 Roland Etzold Method and apparatus for flattening wood based panels
NO140334C (en) * 1977-02-18 1979-08-15 Myrens Verksted As DISC PRESSURE FOR CONTINUOUS PRESSING OF WATER PULP OR SUSPENSIONS
DE3207548C2 (en) * 1982-03-03 1984-02-23 Gebrüder Linck Maschinenfabrik und Eisengießerei "Gatterlinck", 7602 Oberkirch Device for the production of flat wood products such as boards

Also Published As

Publication number Publication date
DE3701127C2 (en) 1990-09-20
FI892000A (en) 1989-04-27
US4977940A (en) 1990-12-18
FI892000A0 (en) 1989-04-27
WO1988005371A1 (en) 1988-07-28
DE3865672D1 (en) 1991-11-21
ATE68396T1 (en) 1991-11-15
DE3701127A1 (en) 1988-07-28
CA1298172C (en) 1992-03-31
JPH0433604B2 (en) 1992-06-03
JPH02501910A (en) 1990-06-28
EP0342196A1 (en) 1989-11-23
FI86971C (en) 1992-11-10
FI86971B (en) 1992-07-31

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