EP0636061A1 - DEVICE FOR THE CHIP-FREE CUTTING OF WOOD LAMPS FROM A QUANTITY. - Google Patents
DEVICE FOR THE CHIP-FREE CUTTING OF WOOD LAMPS FROM A QUANTITY.Info
- Publication number
- EP0636061A1 EP0636061A1 EP93911450A EP93911450A EP0636061A1 EP 0636061 A1 EP0636061 A1 EP 0636061A1 EP 93911450 A EP93911450 A EP 93911450A EP 93911450 A EP93911450 A EP 93911450A EP 0636061 A1 EP0636061 A1 EP 0636061A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- knife edge
- pressure bar
- guide surface
- timber
- wooden
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L5/00—Manufacture of veneer ; Preparatory processing therefor
- B27L5/06—Cutting strips from a stationarily- held trunk or piece by a rocking knife carrier, or from rocking trunk or piece by a stationarily-held knife carrier; Veneer- cutting machines
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- 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
- Y10T83/00—Cutting
- Y10T83/02—Other than completely through work thickness
- Y10T83/0267—Splitting
Definitions
- the invention relates to a device for the non-cutting cutting of wooden lamellae from a squared timber, with a machine frame and with a feed device which conveys the squared timber in the longitudinal direction against an obliquely arranged knife edge, with a pressure bar running at a distance from the knife edge and attached to a wood guide surface .
- Such a difference in thickness of the wooden lamella in the transverse direction also occurs when the knife edge is arranged exactly parallel to the wooden guide surface. Since that too cutting wood lamella is compressed during the cutting process between the knife edge and the pressure bar attached to the wood guide surface, the compressibility of the wood, which is usually cut when wet, affects the resulting thickness of the wood lamella.
- the compressibility depends on the course of the annual rings in the wood cross-section, in particular on the angle at which the annual rings run to the surface of the wooden lamella. Because of the approximately circular course of the annual rings in the trunk cross-section, this angle of the annual rings to the surface of the wooden lamella varies over their width. This leads to the fact that, in most cases, the wood lamellae produced already have different thicknesses on their two longitudinal edges immediately after the cutting process, which in this context is referred to as "taper in the transverse direction".
- the adjustment of the knife edge is controlled as a function of the thickness of the squared timber measured in such a way that the remaining lamella after the last cutting process has the same thickness as the other wooden lamellae, one each specified tolerance is observed.
- the squared timber is tapered in the transverse direction due to different compressibility, these conical deviations can add up in several successive cutting operations so that the resulting lamella has such a strong taper in the transverse direction that it is unsuitable for further processing, although its thickness is still within the allowable tolerance.
- the pressure bar opposite the knife edge is pivotally arranged on the wooden guide surface.
- the object of the invention is therefore to design a device of the type mentioned in the introduction so that a conicity error occurring during the cutting process can be compensated for automatically.
- This object is achieved in that two measuring devices for the thickness of the squared timber are arranged at a distance from one another in the transverse direction of the squared timber and that a relative pivoting between the knife edge and the wooden guide surface connected to the pressure bar is dependent on a pivot axis which runs essentially transversely to the knife edge of the measurement result determined by the measuring devices is carried out by means of a swivel control.
- a taper of the squared timber is recorded in the transverse direction. Due to the subsequent relative pivoting "of the knife edge and the wooden guide surface carrying the pressure bar to each other, the cutting process is changed so that the taper of the squared timber is compensated so much that the remaining lamella has no transverse taper beyond the permissible level.
- the thickness of the remaining lamella can either already correspond to the thickness of the remaining lamellae or be counted larger, a subsequent machining process then taking place in which the remaining lamella is given the desired thickness.
- the relative pivoting can be carried out in such a way that the pressure bar is fixed to the frame and the timber guide surface guiding the timber with the pressure bar attached therefrom and that the knife edge is attached to a knife carrier which is pivotably mounted in the machine frame.
- the knife edge can be fixed to the frame and the wooden guide surface connected to the pressure bar can be pivoted on the machine frame.
- a taper in the longitudinal direction of the squared timber is also compensated for.
- the distance between the knife edge and the wooden guide surface connected to the pressure bar is adjustable during the passage of a square timber by means of an adjusting device as a function of at least two longitudinal measurements of the square timber.
- FIG. 1 shows a device for the non-cutting cutting of wooden lamellae from a squared timber in a simplified side view
- FIG. 2 is an enlarged partial plan view in the direction of arrow II in FIG. 1,
- FIG. 3 is a view in the direction of arrow III in FIG. 2,
- Fig. 6 is a side view corresponding to FIG. 3 in a modified embodiment
- FIG. 7 shows a section along the line VII-VII in FIG. 6.
- the device shown in FIG. 1 has a feed conveyor 1, for example a roller bed, on each of which a square timber 2 is conveyed up.
- a feed device 6 which in the exemplary embodiment shown has a driven, height-adjustable feed belt 7, against a wooden guide surface 8 designed as a guide table, on the edge of which a pressure bar 9, which runs obliquely at an acute angle to the longitudinal and wooden conveying direction is firmly attached.
- a knife edge 10 is arranged r against which the squared timber 2 is pressed by the feed device 6.
- the knife edge 10 cuts off a wooden lamella 11 from the underside of the square timber 2, which is led off obliquely downward, as is shown schematically in FIG. -1.
- the remaining squared timber 2 ' is transported back to the feed conveyor 1 after leaving the cutting station 5 and is subjected to a cutting operation again. This process is repeated until only a remaining lamella remains of the squared timber 2 or 2 '.
- the timber guide surface 8 guiding the squared timber 2 and the pressure bar connected therewith are
- the knife edge 10 is formed on a knife 12 which is attached to the top of a knife holder 13.
- the knife carrier 13 is pivotally mounted in the machine frame 14, its horizontal pivot axis 15 running transversely to the knife edge 10 in the plan view (FIG. 2).
- the pivot axis 15 is formed by a shaft 16 fastened in the box-shaped knife carrier 13, which is mounted with its two shaft ends in a pivot bearing 17 of the machine frame 14.
- the knife carrier 13 is supported at a distance from its pivot axis 15 on a height-adjustable abutment 18.
- a pressing device 19 the knife carrier 13 is pressed against the abutment 18 without play.
- the abutment 18 has a vertically movable support 20 which rests with a lower inclined surface 21 on a horizontally displaceable wedge 22.
- the wedge 22 is horizontally adjustable via a threaded spindle 24 connected to an adjusting motor 23 in order to achieve a height adjustment of the abutment 18.
- Fig. 2 it is indicated schematically that the measurement results supplied by the measuring devices 3, 4 are fed to an evaluation circuit 25.
- the taper of the squared timber 2 in the transverse direction is determined as a difference in thickness at the measuring points 3, 4.
- the evaluation circuit 25 delivers a setting command to the adjusting motor 23, which pivots the knife edge 10 relative to the pressure bar 9 fixed to the frame about the pivot axis 15 in order to compensate for the measured conicity at least to such an extent that the remaining lamella does not have an impermissibly large conicity in the transverse direction.
- the knife carrier 13 can also be pivoted about another pivot axis, provided that this only forms an angle with the knife edge 10 which differs significantly from 0 °.
- the knife carrier 13 can be pivoted about a pivot axis running in the conveying direction and longitudinal direction of the square timber 2. It is only important that the relative angular position between the knife edge 10 and the wooden guide surface 8 or the pressure bar 9 changes during the pivoting movement.
- the knife edge 10 is fixed to the frame and the wooden guide surface 8 executes the controlled pivoting movement.
- FIGS. 6 and 7. This construction principle is realized in the embodiment according to FIGS. 6 and 7.
- the wooden guide surface 8 with the pressure bar 9 is attached to a pressure bar slide 26 which is adjustable in height in a slide guide carrier 27 and thus can be moved transversely to the knife edge.
- the pressure bar slide 26 is supported on the machine frame 14 by means of two lifting elements 28, 29 which can be adjusted separately and perpendicular to the plane of the wood.
- the two lifting elements 28, 29 are arranged at a distance from one another in the longitudinal direction of the pressure bar 9 and are each formed, for example, by a threaded spindle drive.
- the slide guide carrier 27 is pivotally mounted on a bearing block 31 connected to the machine frame 14 via a bearing shaft 30.
- the pivot axis 32 formed by the shaft 30 runs transversely to the pressure bar 9 or to the knife edge 10 and parallel and at a distance from the wooden guide surface 8.
- the wooden guide surface 8 with the pressure bar 9 attached to it is described in the above Way pivoted relative to the knife edge 10 in order to compensate for a taper of the squared timber 2 detected by the measuring devices 3, 4 in the transverse direction.
- the evaluation circuit 25 controls the two lifting elements 28, 29 in dependence on the measurement result of the measuring devices 3, 4.
- At least two thickness measurements of the squared timber can be carried out in the longitudinal distance by means of the measuring devices 3, 4 or with only one of these two measuring devices 3, 4.
- the measuring devices 3, 4 or one of these two measuring devices 3, 4 are actuated once at the beginning of the square timber 2 and a further time at the end of the square timber 2.
- the measured values thus obtained provide information about the taper of the square timber 2 in the longitudinal direction, i.e. about the differences in thickness at the beginning and end of the square timber 2.
- the measurement result obtained in this way is processed in the evaluation circuit 25 'in such a way that the two lifting devices 28, 29 are actuated during the passage of the squared timber 2 in such a way that the distance between the knife edge 10 and the wooden guide surface 8 changes continuously during the passage. This compensates for the taper of the squared timber 2 in the longitudinal direction 2.
- the lifting devices 28, 29 are actuated by the evaluation circuit 25 ', that both a swivel adjustment and a continuous height adjustment of the wooden guide surface 8 takes place during the passage.
- the adjustment movement controlled by the evaluation device 25 ' can also be carried out on the knife edge 10, which for this purpose is cross-adjustable and, if necessary, additionally pivoted in the machine frame 14.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Manufacture Of Wood Veneers (AREA)
- Debarking, Splitting, And Disintegration Of Timber (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Nonmetal Cutting Devices (AREA)
Abstract
Description
Vorrichtung zum spanlosen Abschneiden von Holzlamellen von einem KantholzDevice for the non-cutting cutting of wooden lamella from a square timber
Die Erfindung betrifft eine Vorrichtung zum spanlosen Abschneiden von Holzlamellen von einem Kantholz, mit einem Maschinengestell und mit einer Vorschubeinrichtung, die das Kantholz in Längsrichtung gegen eine schräg im Winkel dazu angeordnete Messerschneide fördert, mit einer im Abstand zur Messerschneide verlaufenden, an einer Holzführungsfläche angebrachten Druckleiste.The invention relates to a device for the non-cutting cutting of wooden lamellae from a squared timber, with a machine frame and with a feed device which conveys the squared timber in the longitudinal direction against an obliquely arranged knife edge, with a pressure bar running at a distance from the knife edge and attached to a wood guide surface .
Es ist bekannt, anstelle der Sägetechnik die spanlos und damit eitestgehend verlustfrei arbeitende Schneidtechnik (DE-A-37 02 909) zur Herstellung von Holzlamellen aus einem Kantholz einzusetzen. Es ist weiter bekannt, bei einer Vorrichtung der eingangs genannten Gattung (DE-A-40 26 346) die Dicke der hergestellten Holzlamellen oder dünnen Bretter dadurch einzustellen, daß mittels einer Versteileinrichtung der Abstand zwischen der Messerschneide und der benachbarten Druckleiste verändert wird. Bei der bekannten Vorrichtung erfolgt die Verstellung dieses Abstandes in Abhängigkeit von dem Ergebnis der Vermessung des Kantholzes vor jedem Schneidvorgang. Mit dieser bekannten Vorrichtung kann zwar die Dicke jeder einzelnen erzeugten Holzlamelle beeinflußt werden; eine Beeinflussung der Konizität ist jedoch nicht möglich.It is known to use the cutting technology (DE-A-37 02 909), which works without cutting and thus has almost no loss, instead of the sawing technique for producing wooden lamellae from a square timber. It is also known to adjust the thickness of the wooden slats or thin boards produced in a device of the type mentioned at the beginning (DE-A-40 26 346) by changing the distance between the knife edge and the adjacent pressure bar by means of an adjusting device. In the known device, this distance is adjusted as a function of the result of the measurement of the squared timber before each cutting process. With this known device, the thickness of each wooden slat produced can be influenced; however, it is not possible to influence the taper.
In der Praxis besteht aber ein Bedürfnis, gerade auch die Konizität der erzeugten Holzlamellen in Querrichtung zu beeinflussen, um einen Dickenunterschied zwischen den beiden Längsrändern der Holzlamelle auszugleichen.In practice, however, there is a need to influence the conicity of the wooden slats produced in the transverse direction in order to compensate for a difference in thickness between the two longitudinal edges of the wooden slat.
Ein solcher Dickenunterschied der Holzlamelle in Querrichtung tritt auch bei exakt paralleler Anordnung der Messerschneide zu der Holzführungsfläche auf. Da die zu schneidende Holzlamelle beim Schneidvorgang zwischen der Messerschneide und der an der Holzführungsfläche fest angebrachten Druckleiste zusammengepreßt wird, beeinflußt die Kompressibilität des üblicherweise im feuchten Zustand geschnittenen Holzes die sich ergebende Dicke der Holzlamelle.Such a difference in thickness of the wooden lamella in the transverse direction also occurs when the knife edge is arranged exactly parallel to the wooden guide surface. Since that too cutting wood lamella is compressed during the cutting process between the knife edge and the pressure bar attached to the wood guide surface, the compressibility of the wood, which is usually cut when wet, affects the resulting thickness of the wood lamella.
Die Kompressibilität hängt aber vom Verlauf der Jahresringe im Holzquerschnitt ab, und zwar insbesondere davon, in welchem Winkel die Jahresringe zur Oberfläche der Holzlamelle verlaufen. Wegen des angenähert kreisförmigen Verlaufs der Jahresringe im Stammquerschnitt ist dieser Winkel der Jahresringe zur Oberfläche der Holzlamelle über deren Breite unterschiedlich. Dies führt dazu, daß die erzeugten Holzlamellen in den meisten Fällen schon unmittelbar nach dem Schneidvorgang an ihren beiden Längsrändern unterschiedliche Dicke aufweisen, was in diesem Zusammenhang als "Konizität in Querrichtung" bezeichnet wird.However, the compressibility depends on the course of the annual rings in the wood cross-section, in particular on the angle at which the annual rings run to the surface of the wooden lamella. Because of the approximately circular course of the annual rings in the trunk cross-section, this angle of the annual rings to the surface of the wooden lamella varies over their width. This leads to the fact that, in most cases, the wood lamellae produced already have different thicknesses on their two longitudinal edges immediately after the cutting process, which in this context is referred to as "taper in the transverse direction".
Bei der bekannten Vorrichtung (DE-A-40 26 346) wird die Verstellung der Messerschneide in Abhängigkeit von der jeweils gemessenen Dicke des Kantholzes so gesteuert, daß die nach dem letzten Schneidvorgang verbleibende Restlamelle die gleiche Dicke aufweist wie die übrigen Holzlamellen, wobei jeweils eine vorgegebene Toleranz eingehalten wird. Wenn jedoch das Kantholz infolge unterschiedlicher Kompressibilität in Querrichtung konisch geschnitten wird, so können sich diese konischen Abweichungen in mehreren aufeinanderfolgenden Schneidvorgängen so addieren, daß die sich ergebende Restlamelle eine so starke Konizität in Querrichtung aufweist, daß sie für die Weiterverarbeitung ungeeignet ist, obwohl ihre Dicke noch in der zulässigen Toleranz liegt. Bei einer anderen bekannten Vorrichtung (DE-A-39 26 396) ist die der Messerschneide gegenüberliegende Druckleiste schwenkbar an der Holzführungsflache angeordnet. Die Schwenkung erfolgt aber um eine Schwenkachse, die im wesentlichen parallel zur Messerschneide verläuft. Eine solche Schwenkbarkeit ist nicht dazu vorgesehen und auch nicht dazu geeignet, eine Konizität des Kantholzes auszugleichen, zumal keine Relatiwerstellung zwischen der Holzführungsfläche und der Messerschneide erfolgt. Bei dieser Vorrichtung werden somit nur die Anpressungsverhältnisse über die gesamte Länge der Messerschneide gleichmäßig verändert. Die Dicke und/oder die Konizität der erzeugten Holzlamellen wird jedoch nicht beeinflußt.In the known device (DE-A-40 26 346) the adjustment of the knife edge is controlled as a function of the thickness of the squared timber measured in such a way that the remaining lamella after the last cutting process has the same thickness as the other wooden lamellae, one each specified tolerance is observed. However, if the squared timber is tapered in the transverse direction due to different compressibility, these conical deviations can add up in several successive cutting operations so that the resulting lamella has such a strong taper in the transverse direction that it is unsuitable for further processing, although its thickness is still within the allowable tolerance. In another known device (DE-A-39 26 396) the pressure bar opposite the knife edge is pivotally arranged on the wooden guide surface. However, the pivoting takes place about a pivot axis which runs essentially parallel to the knife edge. Such swiveling is not intended and also not suitable for compensating for a taper of the squared timber, especially since there is no relative adjustment between the wooden guide surface and the knife edge. With this device, only the contact conditions are changed uniformly over the entire length of the knife edge. However, the thickness and / or the taper of the wood slats produced is not affected.
Aufgabe der Erfindung ist es daher, eine Vorrichtung der eingangs genannten Gattung so auszugestalten, daß ein beim Schneidvorgang auftretender Konizitätsfehler selbsttätig ausgeglichen werden kann.The object of the invention is therefore to design a device of the type mentioned in the introduction so that a conicity error occurring during the cutting process can be compensated for automatically.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß zwei Meßeinrichtungen für die Dicke des Kantholzes in Querrichtung des Kantholzes im Abstand zueinander angeordnet sind und daß eine relative Verschwenkung zwischen der Messerschneide und der mit der Druckleiste verbundenen Holzführungsflache um eine im wesentlichen quer zur Messerschneide verlaufende Schwenkachse in Abhängigkeit von dem von den Meßeinrichtungen ermittelten Meßergebnis mittels einer Schwenksteuerung erfolgt.This object is achieved in that two measuring devices for the thickness of the squared timber are arranged at a distance from one another in the transverse direction of the squared timber and that a relative pivoting between the knife edge and the wooden guide surface connected to the pressure bar is dependent on a pivot axis which runs essentially transversely to the knife edge of the measurement result determined by the measuring devices is carried out by means of a swivel control.
Durch die Vermessung des Kantholzes an zwei in seitlichem Abstand zueinander liegenden Meßstellen wird eine Konizität des Kantholzes in Querrichtung erfaßt. Durch die anschließende relative Verschwenkung"der Messerschneide und der die Druckleiste tragenden Holzführungsflache zueinander wird der Schneidvorgang so verändert, daß die Konizität des Kantholzes so weit ausgeglichen wird, daß die verbleibende Restlamelle keine über das zulässige Maß hinausgehende Konizität in Querrichtung aufweist. Die Dicke der Restlamelle kann dabei entweder schon der Dicke der übrigen Lamellen entsprechen oder größer gezählt werden, wobei dann ein anschließender Bearbeitungsvorgang erfolgt, in dem die Restlamelle die gewünschte Dicke erhält.By measuring the squared timber at two measuring points located at a lateral distance from one another, a taper of the squared timber is recorded in the transverse direction. Due to the subsequent relative pivoting "of the knife edge and the wooden guide surface carrying the pressure bar to each other, the cutting process is changed so that the taper of the squared timber is compensated so much that the remaining lamella has no transverse taper beyond the permissible level. The thickness of the remaining lamella can either already correspond to the thickness of the remaining lamellae or be counted larger, a subsequent machining process then taking place in which the remaining lamella is given the desired thickness.
Die relative Verschwenkung kann so ausgeführt werden, daß die Druckleiste gestellfest das Kantholz führende Holzführungsfläche mit der darab angebrachten Druckleiste gestellfest angeordnet ist und daß die Messerschneide an einem schwenkbar im Maschinengestell gelagerten Messerträger angebracht ist.The relative pivoting can be carried out in such a way that the pressure bar is fixed to the frame and the timber guide surface guiding the timber with the pressure bar attached therefrom and that the knife edge is attached to a knife carrier which is pivotably mounted in the machine frame.
Stattdessen kann aber auch die Messerschneide gestellfest angebracht sein und die mit der Druckleiste verbundene Holzführungs läche kann schwnkbar am Maschinengestell gelagert sein.Instead, however, the knife edge can be fixed to the frame and the wooden guide surface connected to the pressure bar can be pivoted on the machine frame.
In Weiterbildung des Erfindungsgedankens ist vorgesehen, daß zusätzlich zu dieser relativen Verschwenkung zwischen der Messerschneide und der Holzführungsfläche oder unabhängig davon auch eine Konizität in Längsrichtung des Kantholzes ausgeglichen wird. Dazu ist erfindungsgemäß vorgesehen, daß der Abstand zwischen der Messerschneide und der mit der Druckleiste verbundenen Holzführungsflache während des Durchlaufs eines Kantholzes mittels einer Versteileinrichtung in Abhängigkeit von mindestens zwei im Längsabstand vorgenommenen Dickenmessungen des Kantholzes verstellbar ist.In a further development of the concept of the invention, it is provided that in addition to this relative pivoting between the knife edge and the wood guiding surface or independently thereof, a taper in the longitudinal direction of the squared timber is also compensated for. For this purpose, it is provided according to the invention that the distance between the knife edge and the wooden guide surface connected to the pressure bar is adjustable during the passage of a square timber by means of an adjusting device as a function of at least two longitudinal measurements of the square timber.
Mit diesen Messungen wird eine Konizität des Kantholzes in Längsrichtung erfaßt. Der Abstand zwischen der Messerschneide und der Holzführungsflache wird während des Durchlaufs eines Kantholzes so verändert, daß diese Längskonizität ausgeglichen wird. Diese Maßnahme hat ebenfalls das Ziel, daß die verbleibende Restlamelle keine unzulässig hohe Konizität aufweist.These measurements measure the taper of the squared timber in the longitudinal direction. The distance between the knife edge and the wooden guide surface is changed during the passage of a square timber so that it Longitudinal taper is compensated. This measure also has the aim that the remaining lamella does not have an inadmissibly high taper.
Weitere vorteilhafte Ausgestaltungen des Erfindungsgedankens sind Gegenstand weiterer abhängiger Ansprüche.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:The invention is explained in more detail below using exemplary embodiments which are illustrated in the drawing. It shows:
Fig. 1 eine Vorrichtung zum spanlosen Abschneiden von Holzlamellen von einem Kantholz in einer vereinfachten Seitenansicht,1 shows a device for the non-cutting cutting of wooden lamellae from a squared timber in a simplified side view,
Fig. 2 eine vergrößerte Teil-Draufsicht in Richtung des Pfeiles II in Fig. 1,2 is an enlarged partial plan view in the direction of arrow II in FIG. 1,
Fig. 3 eine Ansicht in Richtung des Pfeiles III in Fig. 2,3 is a view in the direction of arrow III in FIG. 2,
Fig. 4 einen Schnitt längs der Linie IV-IV in Fig. 2,4 shows a section along the line IV-IV in FIG. 2,
Fig. 5 einen Schnitt längs der Linie V-V in Fig. 2,5 shows a section along the line V-V in Fig. 2,
Fig. 6 eine Seitenansicht entsprechend der Fig. 3 bei einer abgewandelten Ausführungsform undFig. 6 is a side view corresponding to FIG. 3 in a modified embodiment and
Fig. 7 einen Schnitt längs der Linie VII-VII in Fig. 6.7 shows a section along the line VII-VII in FIG. 6.
Die in Fig. 1 dargestellte Vorrichtung weist eine Zufuhr- Fördereinrichtung 1 auf, beispielsweise ein Rollenbett, auf dem jeweils ein Kantholz 2 herangefördert wird. Zwei in Querrichtung des Kantholzes 2 im Abstand zueinander angeordnete Meßeinrichtungen 3, 4, beispielsweise Laser- Dickenmeßeinrichtungen, erfassen die Dicke des Kantholzes 2 an zwei (in Querrichtung des Kantholzes 2 gesehen) im Abstand nebeneinander liegenden Stellen, wie in Fig. 2 angedeutet ist.The device shown in FIG. 1 has a feed conveyor 1, for example a roller bed, on each of which a square timber 2 is conveyed up. Two measuring devices 3, 4 arranged at a distance from one another in the transverse direction of the squared timber 2, for example laser thickness measuring devices, measure the thickness of the squared timber 2 at two (seen in the transverse direction of the square timber 2) at a distance from each other, as indicated in Fig. 2.
In einer Schneidstation 5 wird das Kantholz 2 von einer Vorschubeinrichtung 6, die beim dargestellten Ausführungsbeispiel ein angetriebenes, höhenverstellbares Vorschubband 7 aufweist, gegen eine als Führungstisch ausgebildete Holzführungsfläche 8 gedrückt, an deren Rand eine schräg in einem spitzen Winkel zur Holzlängsrichtung und Holzförderrichtung verlaufende Druckleiste 9 fest angebracht ist.In a cutting station 5, the squared timber 2 is pressed by a feed device 6, which in the exemplary embodiment shown has a driven, height-adjustable feed belt 7, against a wooden guide surface 8 designed as a guide table, on the edge of which a pressure bar 9, which runs obliquely at an acute angle to the longitudinal and wooden conveying direction is firmly attached.
Im Abstand zur Druckleiste 9 bzw..der HolzführungsflächeAt a distance from the pressure bar 9 or the wooden guide surface
8 und im wesentlichen parallel dazu ist eine Messerschneide 10 angeordnet r gegen die das Kantholz 2 durch die Vorschubeinrichtung 6 gedrückt wird. Die Messerschneide 10 schneidet dabei von der Unterseite des Kantholzes 2 eine Holzlamelle 11 ab, die schräg nach unten abgeführt wird, wie in Fig. -1 schematisch dargestellt ist.8 and essentially parallel thereto, a knife edge 10 is arranged r against which the squared timber 2 is pressed by the feed device 6. The knife edge 10 cuts off a wooden lamella 11 from the underside of the square timber 2, which is led off obliquely downward, as is shown schematically in FIG. -1.
Das verbleibende Kantholz 2 ' wird nach dem Verlassen der Schneidstation 5 wieder zur Zuführ-Fördereinrichtung 1 transportiert und erneut einem Schneidvorgang unterworfen. Dieser Vorgang wiederholt sich so lange, bis von dem Kantholz 2 bzw. 2' nur noch eine Restlamelle verbleibt.The remaining squared timber 2 'is transported back to the feed conveyor 1 after leaving the cutting station 5 and is subjected to a cutting operation again. This process is repeated until only a remaining lamella remains of the squared timber 2 or 2 '.
Bei dem in den Fig. 2-5 in Einzelheiten dargestellten Ausführungsbeispiel sind die das Kantholz 2 führende Holzführungsfläche 8 und die damit verbundene DruckleisteIn the exemplary embodiment shown in FIGS. 2-5, the timber guide surface 8 guiding the squared timber 2 and the pressure bar connected therewith are
9 gestellfest angeordnet (Fig. 4). Die Messerschneide 10 ist an einem Messer 12 ausgebildet, das an der Oberseite eines Messerträgers 13 befestigt ist. Der Messerträger 13 ist im Maschinengestell 14 schwenkbar gelagert, wobei seine horizontale Schwenkachse 15 in der Draufsicht (Fig. 2) quer zur Messerschneide 10 verläuft. Die Schwenkachse 15 wird durch eine im kastenförmigen Messerträger 13 befestigte Welle 16 gebildet, die mit ihren beiden Wellenenden jeweils in einem Schwenklager 17 des Maschinengestells 14 gelagert ist.9 arranged fixed to the frame (Fig. 4). The knife edge 10 is formed on a knife 12 which is attached to the top of a knife holder 13. The knife carrier 13 is pivotally mounted in the machine frame 14, its horizontal pivot axis 15 running transversely to the knife edge 10 in the plan view (FIG. 2). The pivot axis 15 is formed by a shaft 16 fastened in the box-shaped knife carrier 13, which is mounted with its two shaft ends in a pivot bearing 17 of the machine frame 14.
Wie man aus Fig. 3 erkennt, stützt sich der Messerträger 13 im Abstand zu seiner Schwenkachse 15 auf einem höhenverstellbaren Widerlager 18 ab. Durch eine Andrückeinrichtung 19 wird der Messerträger 13 spielfrei gegen das Widerlager 18 gedrückt.As can be seen from Fig. 3, the knife carrier 13 is supported at a distance from its pivot axis 15 on a height-adjustable abutment 18. By means of a pressing device 19, the knife carrier 13 is pressed against the abutment 18 without play.
In Fig. 5 ist dargestellt, daß das Widerlager 18 einen höhenbeweglichen Träger 20 aufweist, der mit einer unteren Schrägfläche 21 auf einem horizontal verschiebbaren Keil 22 aufliegt. Der Keil 22 ist über eine mit einem Verstellmotor 23 verbundene Gewindespindel 24 horizontal verstellbar, um eine Höhenverstellung des Widerlagers 18 zu erreichen.In Fig. 5 it is shown that the abutment 18 has a vertically movable support 20 which rests with a lower inclined surface 21 on a horizontally displaceable wedge 22. The wedge 22 is horizontally adjustable via a threaded spindle 24 connected to an adjusting motor 23 in order to achieve a height adjustment of the abutment 18.
In Fig. 2 ist schematisch angedeutet, daß die von den Meßeinrichtungen 3, 4 gelieferten Meßergebnisse einer Auswerteschaltung 25 zugeführt werden. Dort wird die Konizität des Kantholzes 2 in Querrichtung als Dickenunterschied an den Meßstellen 3, 4 ermittelt. Die Auswerteschaltung 25 liefert einen Stellbefehl an den Verstellmotor 23, der die Messerschneide 10 gegenüber der gestellfesten Druckleiste 9 um die Schwenkachse 15 verschwenkt, um die gemessene Konizität zumindest so weit auszugleichen, daß die verbleibende Restlamelle keine unzulässig große Konizität in Querrichtung aufweist.In Fig. 2 it is indicated schematically that the measurement results supplied by the measuring devices 3, 4 are fed to an evaluation circuit 25. There, the taper of the squared timber 2 in the transverse direction is determined as a difference in thickness at the measuring points 3, 4. The evaluation circuit 25 delivers a setting command to the adjusting motor 23, which pivots the knife edge 10 relative to the pressure bar 9 fixed to the frame about the pivot axis 15 in order to compensate for the measured conicity at least to such an extent that the remaining lamella does not have an impermissibly large conicity in the transverse direction.
Abweichend von dem in den Fig. 1-5 dargestellten und beschriebenen Ausführungsbeispiel kann die Schwenkung des Messerträgers 13 auch um eine andere Schwenkachse erfolgen, sofern diese nur einen deutlich von 0° abweichenden Winkel mit der Messerschneide 10 bildet. Beispielsweise kann die Schwenkung des Messerträgers 13 um eine in Förderrichtung und Längsrichtung des Kantholzes 2 verlaufende Schwenkachse erfolgen. Wichtig ist nur, daß sich bei der Schwenkbewegung die relative Winkelstellung zwischen der Messerschneide 10 und der Holzführungsfläche 8 bzw. der Druckleiste 9 verändert.In a departure from the exemplary embodiment shown and described in FIGS. 1-5, the knife carrier 13 can also be pivoted about another pivot axis, provided that this only forms an angle with the knife edge 10 which differs significantly from 0 °. For example, the knife carrier 13 can be pivoted about a pivot axis running in the conveying direction and longitudinal direction of the square timber 2. It is only important that the relative angular position between the knife edge 10 and the wooden guide surface 8 or the pressure bar 9 changes during the pivoting movement.
Deshalb kann in Abweichung von dem bisher beschriebenen Ausführungsbeispiel auch vorgesehen werden, daß die Messerschneide 10 gestellfest angebracht ist und die Holzführungsfläche 8 die gesteuerte Schwenkbewegung ausführt.Therefore, in deviation from the previously described embodiment, it can also be provided that the knife edge 10 is fixed to the frame and the wooden guide surface 8 executes the controlled pivoting movement.
Dieses Bauprinzip ist bei der Ausführung nach den Fig. 6 und 7 verwirklicht. Dort ist die Holzführungsfläche 8 mit der Druckleiste 9 an einem Druckleistenschlitten 26 angebracht, der in einem Schlittenführungsträger 27 höhenverstellbar und somit quer zur Messerschneide verfahrbar ist. Zu diesem Zweck ist der Druckleistenschlitten 26 über zwei im wesentlichen senkrecht zur Holzebene gesondert verstellbare Hubelemente 28, 29 am Maschinengestell 14 abgestützt. Die beiden Hubelmente 28, 29 sind in Längsrichtung der Druckleiste 9 im Abstand zueinander angeordnet und werden beispielsweise jeweils von einem Gewindespindeltrieb gebildet.This construction principle is realized in the embodiment according to FIGS. 6 and 7. There, the wooden guide surface 8 with the pressure bar 9 is attached to a pressure bar slide 26 which is adjustable in height in a slide guide carrier 27 and thus can be moved transversely to the knife edge. For this purpose, the pressure bar slide 26 is supported on the machine frame 14 by means of two lifting elements 28, 29 which can be adjusted separately and perpendicular to the plane of the wood. The two lifting elements 28, 29 are arranged at a distance from one another in the longitudinal direction of the pressure bar 9 and are each formed, for example, by a threaded spindle drive.
Der Schiittenführungsträger 27 ist über eine Lagerwelle 30 schwenkbar an einem mit dem Maschinengestell 14 verbundenen Lagerbock 31 gelagert. Die durch die Welle 30 gebildete Schwenkachse 32 verläuft quer zur Druckleiste 9 bzw. zur Messerschneide 10 und parallel und im Abstand zur Holzführungsfläche 8.The slide guide carrier 27 is pivotally mounted on a bearing block 31 connected to the machine frame 14 via a bearing shaft 30. The pivot axis 32 formed by the shaft 30 runs transversely to the pressure bar 9 or to the knife edge 10 and parallel and at a distance from the wooden guide surface 8.
Wenn die beiden Hubelemente 28 und 29 gesondert betätigt werden, wird die Holzführungsfläche 8 mit der daran befestigten Druckleiste 9 in der schon beschriebenen Weise relativ zur Messerschneide 10 verschwenkt, um eine von den Meßeinrichtungen 3, 4 erfaßte Konizität des Kantholzes 2 in Querrichtung auszugleichen. Wie in Fig. 6 angedeutet ist, steuert die Auswerteschaltung 25' die beiden Hubelemente 28, 29 in Abhängigkeit von dem Meßergebnis der Meßeinrichtungen 3, 4.If the two lifting elements 28 and 29 are actuated separately, the wooden guide surface 8 with the pressure bar 9 attached to it is described in the above Way pivoted relative to the knife edge 10 in order to compensate for a taper of the squared timber 2 detected by the measuring devices 3, 4 in the transverse direction. As indicated in FIG. 6, the evaluation circuit 25 'controls the two lifting elements 28, 29 in dependence on the measurement result of the measuring devices 3, 4.
Zusätzlich zu dem beschriebenen Vorgang oder unabhängig davon können mittels der Meßeinrichtungen 3, 4 oder mit nur einer dieser beiden Meßeinrichtungen 3, 4 im Längsabstand mindestens zwei Dickenmessungen des Kantholzes erfolgen. Hierzu werden die Meßeinrichtungen 3, 4 bzw. eine dieser beiden Meßeinrichtungen 3, 4 einmal am Anfang des Kantholzes 2 und ein weiteres Mal am Ende des Kantholzes 2 betätigt. Die so erhaltenen Meßwerte liefern eine Information über die Konizität des Kantholzes 2 in Längsrichtung, d.h. über den Dickenunterschiede am Anfang und am Ende des Kantholzes 2.In addition to the described process or independently of this, at least two thickness measurements of the squared timber can be carried out in the longitudinal distance by means of the measuring devices 3, 4 or with only one of these two measuring devices 3, 4. For this purpose, the measuring devices 3, 4 or one of these two measuring devices 3, 4 are actuated once at the beginning of the square timber 2 and a further time at the end of the square timber 2. The measured values thus obtained provide information about the taper of the square timber 2 in the longitudinal direction, i.e. about the differences in thickness at the beginning and end of the square timber 2.
Das so erhaltene Meßergebnis wird in der Auswerteschaltung 25' so verarbeitet, daß die beiden Hubeinrichtungen 28, 29 während des Durchlaufs des Kantholzes 2 so betätigt werden, daß sich der Abstand zwischen der Messerschneide 10 und der Holzführungsfläche 8 während des Durchlaufs kontinuierlich ändert. Dadurch wird die ermittelte Konizität des Kantholzes 2 in Längsrichtung 2 ausgeglichen.The measurement result obtained in this way is processed in the evaluation circuit 25 'in such a way that the two lifting devices 28, 29 are actuated during the passage of the squared timber 2 in such a way that the distance between the knife edge 10 and the wooden guide surface 8 changes continuously during the passage. This compensates for the taper of the squared timber 2 in the longitudinal direction 2.
Wenn das zugeführte Kantholz 2 sowohl eine Konizität in Querrichtung als auch in Längsrichtung aufweist, was von den Meßeinrichtungen 3, 4 in mindestens zwei Meßvorgängen bei jedem Durchlauf des Kantholzes 2 erfaßt wird, werden die Hubeinrichtungen 28, 29 durch die Auswerteschaltung 25' so betätigt, daß sowohl eine Schwenkverstellung als auch eine während des Durchlaufs kontinuierliche Höhenverstellung der Holzführungsflache 8 erfolgt. Abweichend von dem in den Fig. 6 und 7 dargestellten Ausführungsbeispiel kann die von der Auswerteeinrichtung 25' gesteuerte Verstellbewegung auch an der Messerschneide 10 ausgeführt werden, die zu diesem Zweck querverstellbar und ggf. zusätzlich schwenkbar im Maschinengestell 14 gelagert ist. Es ist auch möglich, die Schwenkverstellung zum Ausgleich einer Konizität in Querrichtung und die kontinuierliche Querverstellung während des Durchlaufs des Kantholzes in der Weise zu trennen, daß entweder die Messerschneide 10 oder die Holzführungsflache 8 nur die Schwenkverstellung ausführt und das jeweils andere Teil nur die Querverstellung ausführt. If the supplied squared timber 2 has both a taper in the transverse direction and in the longitudinal direction, which is detected by the measuring devices 3, 4 in at least two measuring operations each time the squared timber 2 is run through, the lifting devices 28, 29 are actuated by the evaluation circuit 25 ', that both a swivel adjustment and a continuous height adjustment of the wooden guide surface 8 takes place during the passage. In a departure from the exemplary embodiment shown in FIGS. 6 and 7, the adjustment movement controlled by the evaluation device 25 'can also be carried out on the knife edge 10, which for this purpose is cross-adjustable and, if necessary, additionally pivoted in the machine frame 14. It is also possible to separate the swivel adjustment to compensate for a taper in the transverse direction and the continuous transverse adjustment during the passage of the squared timber in such a way that either the knife edge 10 or the wooden guide surface 8 only carries out the swivel adjustment and the other part only carries out the transverse adjustment .
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4212432A DE4212432C2 (en) | 1992-04-14 | 1992-04-14 | Device for the non-cutting cutting of wooden lamella from a square timber |
| DE4212432 | 1992-04-14 | ||
| PCT/EP1993/000865 WO1993020986A1 (en) | 1992-04-14 | 1993-04-07 | Device for cutting sheets of wood off square timber without forming chips |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0636061A1 true EP0636061A1 (en) | 1995-02-01 |
| EP0636061B1 EP0636061B1 (en) | 1996-06-26 |
Family
ID=6456770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93911450A Expired - Lifetime EP0636061B1 (en) | 1992-04-14 | 1993-04-07 | Device for cutting sheets of wood off square timber without forming chips |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US5400843A (en) |
| EP (1) | EP0636061B1 (en) |
| JP (1) | JPH07500545A (en) |
| AT (1) | ATE139725T1 (en) |
| CA (1) | CA2121242A1 (en) |
| DE (2) | DE4212432C2 (en) |
| FI (1) | FI944743A0 (en) |
| WO (1) | WO1993020986A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4123199C2 (en) * | 1991-07-12 | 1994-09-01 | Georg Witt | Method and device for mechanically removing foreign substances from the base material of a plate-shaped information carrier |
| AT404107B (en) * | 1996-06-13 | 1998-08-25 | Rupert Hirnsperger | DEVICE OR METHOD FOR CHIP-FREE CUTTING OF WOOD LAMPS AND BOARDS |
| US5881786A (en) * | 1997-06-10 | 1999-03-16 | Weyerhaeuser Company | Method of producing wood strips for conversion into composite lumber products |
| DE19855803B4 (en) * | 1998-12-03 | 2006-01-26 | Gfm Gmbh | Method and device for producing a chamfer or a keyway on a workpiece |
| FI119962B (en) * | 2006-08-31 | 2009-05-29 | Ponsse Oyj | A method and arrangement for measuring a tree unit in a tree handling device |
| KR101059022B1 (en) | 2009-10-05 | 2011-08-23 | 김진수 | Edge banding machine |
| DE102018111307A1 (en) * | 2018-05-11 | 2019-11-14 | Gaugler & Lutz Ohg | Device for processing one or more block-shaped workpieces |
| CN108672949B (en) * | 2018-05-31 | 2021-06-25 | 芜湖众梦电子科技有限公司 | A calendering and directional integral type equipment of tailorring for car panel |
| CN112847675A (en) * | 2021-01-08 | 2021-05-28 | 南京中睿格科技有限公司 | Accurate timber cutting device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3343294A1 (en) * | 1983-11-30 | 1985-06-05 | Gebrüder Linck Maschinenfabrik und Eisengießerei "Gatterlinck", 7602 Oberkirch | DEVICE FOR PRODUCING CANNED WOOD BY SPANLESS SEPARATION OF SIDEBOARDS |
| DE3623237A1 (en) * | 1986-07-10 | 1988-01-21 | Wurster & Dietz Gmbh U Co Masc | Method and apparatus for chiplessly separating a treetrunk into wood products |
| DE8701511U1 (en) * | 1987-01-31 | 1988-05-26 | Gebrüder Linck Maschinenfabrik "Gatterlinck" GmbH & Co KG, 7602 Oberkirch | Device for producing thin boards |
| DE3926396A1 (en) * | 1989-08-10 | 1991-02-14 | Linck Masch Gatterlinck | Chipless conversion of tree into boards - involves use of adjustable pressure bar ahead of slicing knife |
| DE4026346A1 (en) * | 1989-11-01 | 1991-05-02 | Linck Masch Gatterlinck | METHOD FOR SPANLESS SPLITING OF A QUANTITY WOOD IN BOARDS OF THE SAME THICKNESS |
| US5318083A (en) * | 1991-01-30 | 1994-06-07 | Firma Gebruder Linck Machinenfabrik "Gatterlinck" Gmbh & Co., Kg | Apparatus for cutting and severing of a thin board from squared timber |
-
1992
- 1992-04-07 US US08/211,484 patent/US5400843A/en not_active Expired - Fee Related
- 1992-04-14 DE DE4212432A patent/DE4212432C2/en not_active Expired - Fee Related
-
1993
- 1993-04-07 EP EP93911450A patent/EP0636061B1/en not_active Expired - Lifetime
- 1993-04-07 DE DE59303084T patent/DE59303084D1/en not_active Expired - Fee Related
- 1993-04-07 JP JP5517958A patent/JPH07500545A/en active Pending
- 1993-04-07 CA CA002121242A patent/CA2121242A1/en not_active Abandoned
- 1993-04-07 AT AT93911450T patent/ATE139725T1/en not_active IP Right Cessation
- 1993-04-07 WO PCT/EP1993/000865 patent/WO1993020986A1/en active IP Right Grant
-
1994
- 1994-10-10 FI FI944743A patent/FI944743A0/en not_active Application Discontinuation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9320986A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2121242A1 (en) | 1993-10-28 |
| WO1993020986A1 (en) | 1993-10-28 |
| FI944743L (en) | 1994-10-10 |
| EP0636061B1 (en) | 1996-06-26 |
| US5400843A (en) | 1995-03-28 |
| DE4212432A1 (en) | 1993-10-21 |
| JPH07500545A (en) | 1995-01-19 |
| DE59303084D1 (en) | 1996-08-01 |
| DE4212432C2 (en) | 1994-02-17 |
| FI944743A0 (en) | 1994-10-10 |
| ATE139725T1 (en) | 1996-07-15 |
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