EP1990148B1 - Device for feeding boards to chop saws - Google Patents

Device for feeding boards to chop saws Download PDF

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Publication number
EP1990148B1
EP1990148B1 EP20080008394 EP08008394A EP1990148B1 EP 1990148 B1 EP1990148 B1 EP 1990148B1 EP 20080008394 EP20080008394 EP 20080008394 EP 08008394 A EP08008394 A EP 08008394A EP 1990148 B1 EP1990148 B1 EP 1990148B1
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EP
European Patent Office
Prior art keywords
boards
conveyor unit
cross conveyor
feeding
stop
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EP20080008394
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German (de)
French (fr)
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EP1990148A1 (en
Inventor
Alois Heinz
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Grecon Dimter Holzoptimierung Sud GmbH and Co KG
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Grecon Dimter Holzoptimierung Sud GmbH and Co KG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B25/00—Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees
    • B27B25/04—Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees with feed chains or belts
    • 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
    • Y10T83/647—With means to convey work relative to tool station

Definitions

  • the invention relates to a device for feeding boards according to the preamble of claim 1.
  • the boards are after scanning on a feeder in the form of a wide roller conveyor with cam chain or a wide conveyor belt with overhead fan transport aligned on a front side passed a subsequent transverse transport unit. At this point, the boards are taken individually from the transverse transport unit and kept isolated by means of so-called flow latches.
  • Flow pawls are pneumatically controlled stoppers operated by a device control signal. This signal is generated by one or more photocells when the board is in the correct position.
  • the transverse transport unit becomes pivoted so that the boards can be transferred to a subsequent feed level, where they are fed to the chop saw. Often two superimposed loading levels are provided, each associated with a chop saw.
  • a second transverse transport unit which is pivotable and can be controlled with the further feed levels, which are associated with further chop saws.
  • this device is susceptible to interference when tracking the boards. It happens that a board is fed to a chop saw and the electronic board data (cut list) of another board of the control of the chop saw are transmitted. This then leads to false performance results until the error in the feed motion is detected by control mechanisms and the device is stopped. Thereafter, the device must be emptied empty or driven empty, which interferes with the production flow and has a performance-reducing effect.
  • a feeder a transverse transport unit is connected downstream, which consists of two cascade conveyors arranged one above the other.
  • Each cascade conveyor has a front conveyor belt and a downstream rear conveyor.
  • the front conveyor belts can be adjusted about an axis transverse to the feed direction between two positions so that the boards are transported by the feeder selectively on the upper or the lower front conveyor belt.
  • a stop is provided in each case, on which the boards accrue.
  • wood-edged board material is transported by means of carriers over a longitudinal conveyor.
  • the drivers are lowered down so that they can be transported further under the longitudinal conveyor.
  • the invention has the object of providing the generic device in such a way that the boards can be tracked properly during their transport to the chop saw and present at the chop saw the boards and the associated cut lists or board data.
  • the boards are reliably distributed to the feeder by means of the transverse transport unit to the desired loading level, without the need for photocells and other sensors for tracking the boards.
  • a stop is set in the transport path of the boards, at which the boards coming from the feeding device come to rest. As long as the transverse transport unit is adjusted to the new loading level, the boards remain on the transverse transport unit.
  • This design ensures that the boards are reliably fed to the predetermined feed levels and the predetermined chop saws. Since the pivot axis of the transverse conveyor unit lies in the transfer region of the boards from the feed device to the transverse transport unit, the boards can be fed further by the feed unit during the adjustment of the transverse transport unit. The supplied boards run on the stop, which can be moved to the other end of the transverse transport unit. If this position is reached, the transverse transport unit can be pivoted about the pivot axis to a new loading level.
  • the device has a feeding device 1 for boards 2, which are fed to a feed device downstream of the transverse transport unit 3.
  • the feeder 1 may be formed as a wide roller conveyor with cam chain or as a broad conveyor belt.
  • the feeder 1 is a wide roller conveyor, the transversely to its transport direction 4 lying flat spacers 5, the adjacent boards 2 separate from each other.
  • the wide roller conveyor is driven.
  • the boards 2 are conveyed in their longitudinal direction between the spacers 5 by means of a preceding conveyor unit (not shown).
  • the transport unit is formed for example by feed rollers on the boards 2 and transport them in their longitudinal direction on the feeder 1.
  • the boards 2 have been previously scanned by so-called continuous scanners, which are arranged stationary and detect the data of the boards 2 in a known manner. For the recorded board data, a data record is created, by means of which the device (not shown) cut-off saws the boards 2 saw.
  • the transverse transport unit 3 In the last compartment 6 of the feeder 1 before the transfer to the transverse transport unit 3 is by means of a sensor, preferably a photocell (not shown), checked whether the boards 2 are aligned with its end face 7 with respect to a frontal zero edge. Parallel to the transport of the boards 2, the associated data records are transmitted to the respective saws. The boards 2 are transferred to the transverse transport unit 3, which is set according to the cut list with respect to the feeder 1. As it turned out Fig. 1 results, the transverse transport unit 3 can be adjusted to an axis transverse to the transport direction 4 axis 8 in different positions. Exemplary are in Fig. 1 four pivotal positions I to IV of the transverse transport unit 3 shown.
  • the pivot axis 8 is located in the transfer area 9 of the feeder 1 to the transverse transport unit 3.
  • the woods 2 (not shown) feed levels are passed, which feed the boards to the downstream chop saws.
  • the transverse transport unit 3 can be pivoted into four different inclination positions. Each of these inclination positions is assigned in each case a chop saw, in which the woods 2 are cut according to the records.
  • the transverse transport unit 3 consists of parallel adjacent, endlessly circulating belt 10, with which the boards 2 in the transport direction 11 (FIG. Fig. 1 ) be transported.
  • a cam chain is provided which has one or more cams 12.
  • the drive of the cam chain with the cam 12 is advantageously carried out by means a servomotor.
  • the drive of the cam chain can also be done by means of frequency converter or three-phase motor with brake.
  • a motor drive preferably a servomotor, is used for the stroke adjustment of the transverse transport unit 3.
  • transverse transport unit 3 By means of pneumatic or hydraulic power units.
  • the transport belt 10 of the transverse transport unit 3 with the associated deflection rollers are mounted in a common (not shown) frame, which is adjusted by means of the drive in height.
  • corresponding loading planes to which the woods of the respective chop saw are fed, adjoin the corresponding end of the transverse transport unit facing away from the feed device 1.
  • Fig. 3 Based on Fig. 3 the function of the cam chain is explained. They each have two cams 12 which project beyond the belts 10 of the transverse transport unit 3. First, the boards 2 are transferred from the feeder 1 of the transverse transport unit 3, one of the in Fig. 1 shown pivoting positions I to IV occupies. The cams 12 are corresponding to the middle figure of Fig. 3 arranged. If enough boards 2 have been successively fed to the corresponding loading level and if the loading level is to be changed, the cam chains are driven such that the cam 12 is moved at the rear end of the transverse transport unit 3 in the transport direction 11 in the transition area 9 from the feed device 1 to the transverse transport unit 3 into the transport path the boards 2 passes. The trajectory of the cam 12 is in Fig. 2 shown.
  • the drives of the feeder 1 and the cam chain are coordinated so that the cam 12, seen in the direction of the axis 8, emerges in the region of the last spacer 5 before the deflection of the support plane 13 of the feeder 1.
  • the position of the cam 12 according to Fig. 2 corresponds to the figure below Fig. 3 ,
  • the other cam 12 of each cam chain is located in the region of the lower run of the belt 10 the feeder 1 coming boards 2 in succession.
  • the boards 2 located in the transport direction 11 in front of the cam 12 can still be transported further to the coating plane.
  • the cam 12 runs with the belt 10 until it reaches the front in the transport direction 11 end of the transverse transport unit 3 (upper figure in Fig. 3 ).
  • the camshafts and thus the cams 12 are stopped and the transverse transport unit 3 is pivoted about the axis 8 in a new position to provide another loading level with the boards 2.
  • the cam 12 of the cam chains located in the transport direction 11 lies in the lower run area of the belts 10, so that the boards 2 continue to be conveyed by the feed device 1 onto the transverse transport unit 3.
  • the boards 2 are collected lying on the stationary cam 12 in this way.
  • the cam chains are driven and the cam 12 is moved into the region of the lower run of the belts 10.
  • the boards 2 are thereby released and reach the new loading level.
  • the position of the cam 12 immediately after release of the boards 2 is in the middle figure of Fig. 3 shown.
  • the other cams 12 are in a position that they do not hinder the feeding of the boards 2 from the feeder 1 to the transverse transport unit 3.
  • This position of the cams 12 corresponds to the basic position of the cam chains, so that the belts 10 of the transverse transport unit 3 can take over the boards 2 from the feed device 1 and transfer them to the loading plane.
  • the left cam 12 is shown, which by driving the corresponding cam chain in the transport direction 11 in the direction of its locking position (upper illustration in FIG Fig. 3 ) is transported.
  • the boards 2 which are further conveyed by the feed direction 1, run on their rear side.
  • the cam 12 has the locking position corresponding to the upper figure of Fig.
  • the drive of the cam chains is stopped and now the transverse transport unit 3 is pivoted about the axis 8 in a new position to provide another loading level with the boards 2. If the transverse transport unit 3 has reached the new pivot position, the cam chains driven and accordingly the cam 12 is moved to the release position (middle illustration of Fig. 3 ), so that the boards 2 can be fed to a new loading level.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Attitude Control For Articles On Conveyors (AREA)
  • Sawing (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Intermediate Stations On Conveyors (AREA)

Abstract

The device has a supply unit and a downstream transverse transportation unit (3), which are downstream to two feeding levels that lie in different heights. Boards that are supplied to a cross-cut saw are provided on the feeding levels. The saw is adjustable at an axis transverse to feed direction of boards (2) on each feeding level. A stopper (12) is adjustable on the transverse transportation unit in transportation path of the boards. The stopper is positionable and/or adjustable by a controller without sensing the boards.

Description

Die Erfindung betrifft eine Vorrichtung zum Zuführen von Brettern nach dem Oberbegriff des Anspruches 1.The invention relates to a device for feeding boards according to the preamble of claim 1.

Bei der Holzverarbeitung ist es bekannt, zu sägende Bretter bzw. Hölzer zunächst mittels einer stationären Scannereinheit im Durchlaufverfahren zu scannen und auf diese Weise beispielsweise Fehler in den Brettern zu erfassen, die bei der weiteren Verarbeitung entfernt werden müssen. Die von der Scannereinheit erfassten Brettdaten werden softwaremäßig optimiert und pro Brett eine Schnittliste errechnet. Anhand der Schnittliste wird das abgescannte Brett von Kappsägen bearbeitet. Die Bretter werden nach dem Scanvorgang von einer Mechanisierungseinrichtung übernommen, wobei an einer Übergabestelle dem jeweiligen Brett die zugehörige Schnittliste zugeordnet wird. Die Bretter mit den zugeordneten Schnittlisten werden einer oder mehreren Kappsägen zugeführt. Die Bretter werden nach dem Scanvorgang auf einer Zuführeinrichtung in Form einer Breitrollenbahn mit Nockenkette oder einem Breittransportband mit oben liegendem Fächertransport an einer Stirnseite ausgerichtet einer nachfolgenden Quertransporteinheit übergeben. An dieser Stelle werden die Bretter einzeln von der Quertransporteinheit übernommen und mittels sogenannter Fließklinken vereinzelt gehalten. Fließklinken sind pneumatisch angesteuerte Stopperreihen, die durch ein Signal der Vorrichtungssteuerung betätigt werden. Dieses Signal wird von einer oder mehreren Fotozellen dann erzeugt, wenn das Brett in der richtigen Position liegt. Nach einer bestimmten Anzahl von Brettern, vorzugsweise zwischen fünf und zehn Brettern, wird die Quertransporteinheit so geschwenkt, dass die Bretter auf eine nachfolgende Beschickungsebene übergeben werden können, auf der sie der Kappsäge zugeführt werden. Häufig sind zwei übereinander angeordnete Beschickungsebenen vorgesehen, denen jeweils eine Kappsäge zugeordnet ist. Es ist auch möglich, nachgeschaltet eine zweite Quertransporteinheit vorzusehen, die schwenkbar ist und mit der weitere Beschickungsebenen angesteuert werden können, denen weitere Kappsägen zugeordnet sind. Die Kontrolle über die Position der Bretter auf den Quertransporteinheiten und die Verteilung der Bretter auf die jeweiligen Beschickungsebenen erfolgt mittels Fotozellen und der Steuerung der Vorrichtung. Diese Vorrichtung ist allerdings störanfällig bei der Verfolgung der Bretter. Es kommt vor, dass ein Brett einer Kappsäge zugeführt wird und die elektronischen Brettdaten (Schnittliste) eines anderen Brettes der Steuerung der Kappsäge übertragen werden. Dies führt dann zu falschen Kappergebnissen, bis der Fehler in der Zuführbewegung durch Kontrollmechanismen bemerkt und die Vorrichtung angehalten wird. Danach muss die Vorrichtung leer geräumt oder leer gefahren werden, was den Produktionsfluss stört und sich leistungsmindernd auswirkt.In woodworking, it is known to first scan boards or wood to be sawn by means of a stationary scanner unit in a continuous process and in this way to detect, for example, faults in the boards, which must be removed during further processing. The board data recorded by the scanner unit are optimized by software and a cutting list is calculated per board. Based on the cut list, the scanned board is edited by cross cut saws. The boards are taken over after the scanning process by a mechanization device, wherein the relevant cutting list is assigned to the relevant board at a transfer point. The boards with the assigned cut lists are fed to one or more chop saws. The boards are after scanning on a feeder in the form of a wide roller conveyor with cam chain or a wide conveyor belt with overhead fan transport aligned on a front side passed a subsequent transverse transport unit. At this point, the boards are taken individually from the transverse transport unit and kept isolated by means of so-called flow latches. Flow pawls are pneumatically controlled stoppers operated by a device control signal. This signal is generated by one or more photocells when the board is in the correct position. After a certain number of boards, preferably between five and ten boards, the transverse transport unit becomes pivoted so that the boards can be transferred to a subsequent feed level, where they are fed to the chop saw. Often two superimposed loading levels are provided, each associated with a chop saw. It is also possible, provided downstream, to provide a second transverse transport unit, which is pivotable and can be controlled with the further feed levels, which are associated with further chop saws. The control of the position of the boards on the transverse transport units and the distribution of the boards on the respective loading levels by means of photocells and the control of the device. However, this device is susceptible to interference when tracking the boards. It happens that a board is fed to a chop saw and the electronic board data (cut list) of another board of the control of the chop saw are transmitted. This then leads to false performance results until the error in the feed motion is detected by control mechanisms and the device is stopped. Thereafter, the device must be emptied empty or driven empty, which interferes with the production flow and has a performance-reducing effect.

Es ist eine Vorrichtung gemäß dem Oberbegriff des Anspruchs 1 bekannt ( DE-A-103 40 752 ), bei der einer Zuführeinrichtung eine Quertransporteinheit nachgeschaltet ist, die aus zwei übereinander angeordneten Kaskadeförderern besteht. Jeder Kaskadeförderer hat ein vorderes Förderband sowie ein nachgeschaltetes hinteres Förderband. Die vorderen Förderbänder können um eine quer zur Vorschubrichtung liegende Achse zwischen zwei Stellungen so verstellt werden, dass die Bretter von der Zuführeinrichtung wahlweise auf das obere oder das untere vordere Förderband transportiert werden. Am Übergang zum hinteren Förderband ist jeweils ein Anschlag vorgesehen, auf den die Bretter auflaufen. Sind die auf den hinteren Förderbändern befindlichen Bretter weitergegeben worden, wird der entsprechende Anschlag in eine Freigabestellung verstellt, so dass die an ihm anliegenden Bretter nunmehr vom vorderen auf das hintere Förderband transportiert werden können. Die Bretter werden über nachgeschaltete weitere Transporteinheiten Boxen zugeführt, in welche die Bretter fallen.It is a device according to the preamble of claim 1 known ( DE-A-103 40 752 ), in which a feeder a transverse transport unit is connected downstream, which consists of two cascade conveyors arranged one above the other. Each cascade conveyor has a front conveyor belt and a downstream rear conveyor. The front conveyor belts can be adjusted about an axis transverse to the feed direction between two positions so that the boards are transported by the feeder selectively on the upper or the lower front conveyor belt. At the transition to the rear conveyor belt a stop is provided in each case, on which the boards accrue. Once the boards located on the rear conveyor belts have been passed on, the corresponding stop is moved into a release position, so that the boards resting against it can now be transported from the front to the rear conveyor belt. The boards are fed via downstream further transport units boxes in which fall the boards.

Bei einer anderen bekannten Vorrichtung ( DE-A-37 07 194 ) wird waldkantige Brettware mittels Mitnehmern über eine Längsfördereinrichtung transportiert. Im Bereich dieser Längsfördereinrichtung werden die Mitnehmer nach unten abgesenkt, so dass sie unter der Längsfördereinrichtung weitertransportiert werden können.In another known device ( DE-A-37 07 194 ) wood-edged board material is transported by means of carriers over a longitudinal conveyor. In the region of this longitudinal conveyor, the drivers are lowered down so that they can be transported further under the longitudinal conveyor.

Der Erfindung liegt die Aufgabe zugrunde, die gattungsgemäße Vorrichtung so auszubilden, dass die Bretter bei ihrem Transport zur Kappsäge einwandfrei verfolgt werden können und an der Kappsäge die Bretter und die zugehörigen Schnittlisten bzw. Brettdaten vorliegen.The invention has the object of providing the generic device in such a way that the boards can be tracked properly during their transport to the chop saw and present at the chop saw the boards and the associated cut lists or board data.

Diese Aufgabe wird bei der gattungsgemäßen Vorrichtung erfindungsgemäß mit den kennzeichnenden Merkmalen des Anspruches 1 gelöst.This object is achieved in the generic device according to the invention with the characterizing features of claim 1.

Bei der erfindungsgemäßen Vorrichtung werden die Bretter nach der Zuführeinrichtung mit Hilfe der Quertransporteinheit zuverlässig auf die gewünschte Beschickungsebene verteilt, ohne dass Fotozellen und andere Sensoren zur Verfolgung der Bretter notwendig sind. Soll die Quertransporteinheit auf eine andere Beschickungsebene eingestellt werden, wird in den Transportweg der Bretter ein Anschlag verstellt, an dem die von der Zuführeinrichtung kommenden Bretter zur Anlage kommen. Solange die Quertransporteinheit auf die neue Beschickungsebene verstellt wird, bleiben die Bretter auf der Quertransporteinheit. Diese Ausbildung stellt sicher, dass die Bretter zuverlässig den vorbestimmten Beschickungsebenen und den vorbestimmten Kappsägen zugeführt werden. Da die Schwenkachse der Querfördereinheit im Übergabebereich der Bretter von der Zuführeinrichtung zur Quertransporteinheit liegt, können die Bretter während des Verstellens der Quertransporteinheit von der Zuführeinheit weiter zugeführt werden. Die zugeführten Bretter laufen auf den Anschlag auf, der bis zum anderen Ende der Quertransporteinheit bewegt werden kann. Ist diese Stellung erreicht, lässt sich die Quertransporteinheit um die Schwenkachse auf eine neue Beschickungsebene verschwenken.In the apparatus according to the invention, the boards are reliably distributed to the feeder by means of the transverse transport unit to the desired loading level, without the need for photocells and other sensors for tracking the boards. If the transverse transport unit is to be set to another loading level, a stop is set in the transport path of the boards, at which the boards coming from the feeding device come to rest. As long as the transverse transport unit is adjusted to the new loading level, the boards remain on the transverse transport unit. This design ensures that the boards are reliably fed to the predetermined feed levels and the predetermined chop saws. Since the pivot axis of the transverse conveyor unit lies in the transfer region of the boards from the feed device to the transverse transport unit, the boards can be fed further by the feed unit during the adjustment of the transverse transport unit. The supplied boards run on the stop, which can be moved to the other end of the transverse transport unit. If this position is reached, the transverse transport unit can be pivoted about the pivot axis to a new loading level.

Weitere Merkmale der Erfindung ergeben sich aus den weiteren Ansprüchen, der Beschreibung und den Zeichnungen.Further features of the invention will become apparent from the other claims, the description and the drawings.

Die Erfindung wird anhand eines in den Zeichnungen dargestellten Ausführungsbeispieles näher erläutert. Es zeigen

Fig. 1
in vereinfachter Darstellung eine erfindungsgemäße Vorrichtung zur Zuführung und Verteilung von Brettern,
Fig. 2
in vergrößerter Darstellung den Übergabebereich von einer Zu- führeinrichtung auf eine schwenkbare Quertransporteinheit der erfindungsgemäßen Vorrichtung,
Fig. 3
in schematischer Darstellung unterschiedliche Stellungen von No- cken im Bereich der Quertransporteinheit,
Fig. 4
eine Draufsicht auf den Übergabebereich der erfindungsgemäßen Vorrichtung.
The invention will be explained in more detail with reference to an embodiment shown in the drawings. Show it
Fig. 1
in a simplified representation of an inventive device for feeding and distribution of boards,
Fig. 2
in an enlarged view the transfer region from a supply device to a pivotable transverse transport unit of the device according to the invention,
Fig. 3
schematic representation of different positions of cams in the region of the transverse transport unit,
Fig. 4
a plan view of the transfer area of the device according to the invention.

Die Vorrichtung hat eine Zuführeinrichtung 1 für Bretter 2, die einer der Zuführeinrichtung nachgeschalteten Quertransporteinheit 3 zugeführt werden. Die Zuführeinrichtung 1 kann als Breitrollenbahn mit Nockenkette oder als Breittransportband ausgebildet sein. Im dargestellten Ausführungsbeispiel ist die Zuführeinrichtung 1 eine Breitrollenbahn, die quer zu ihrer Transportrichtung 4 liegende flache Abstandhalter 5 aufweist, die benachbarte Bretter 2 voneinander trennen. Die Breitrollenbahn ist angetrieben. Die Bretter 2 werden mittels einer (nicht dargestellten) vorgeschalteten Fördereinheit in ihrer Längsrichtung zwischen die Abstandhalter 5 gefördert. Die Transport einheit wird beispielsweise durch Vorschubwalzen gebildet, die auf den Brettern 2 aufliegen und diese in ihrer Längsrichtung auf die Zuführeinrichtung 1 transportieren. Die Bretter 2 sind zuvor von sogenannten Durchlaufscannern abgetastet worden, die stationär angeordnet sind und in bekannter Weise die Daten der Bretter 2 erfassen. Zu den aufgenommenen Brettdaten wird ein Datensatz erstellt, anhand dessen der Vorrichtung nachgeschaltete (nicht dargestellte) Kappsägen die Bretter 2 sägen.The device has a feeding device 1 for boards 2, which are fed to a feed device downstream of the transverse transport unit 3. The feeder 1 may be formed as a wide roller conveyor with cam chain or as a broad conveyor belt. In the illustrated embodiment, the feeder 1 is a wide roller conveyor, the transversely to its transport direction 4 lying flat spacers 5, the adjacent boards 2 separate from each other. The wide roller conveyor is driven. The boards 2 are conveyed in their longitudinal direction between the spacers 5 by means of a preceding conveyor unit (not shown). The transport unit is formed for example by feed rollers on the boards 2 and transport them in their longitudinal direction on the feeder 1. The boards 2 have been previously scanned by so-called continuous scanners, which are arranged stationary and detect the data of the boards 2 in a known manner. For the recorded board data, a data record is created, by means of which the device (not shown) cut-off saws the boards 2 saw.

Im letzten Fach 6 der Zuführeinrichtung 1 vor der Übergabe an die Quertransporteinheit 3 wird mittels eines Sensors, vorzugsweise einer Fotozelle (nicht dargestellt), überprüft, ob die Bretter 2 mit ihrer Stirnseite 7 in Bezug auf eine stirnseitige Nullkante ausgerichtet sind. Parallel zum Transport der Bretter 2 werden die dazugehörigen Datensätze den jeweiligen Sägen übermittelt. Die Bretter 2 werden der Quertransporteinheit 3 übergeben, die entsprechend der Schnittliste in Bezug auf die Zuführeinrichtung 1 eingestellt wird. Wie sich aus Fig. 1 ergibt, kann die Quertransporteinheit 3 um eine quer zur Transportrichtung 4 liegende Achse 8 in unterschiedliche Lagen verstellt werden. Beispielhaft sind in Fig. 1 vier Schwenklagen I bis IV der Quertransporteinheit 3 dargestellt. Die Schwenkachse 8 befindet sich im Übergabebereich 9 von der Zuführeinrichtung 1 zur Quertransporteinheit 3. Mit der Quertransporteinheit 3 werden die Hölzer 2 (nicht dargestellten) Beschickungsebenen übergeben, welche die Bretter den nachgeschalteten Kappsägen zuführen. Im Ausführungsbeispiel kann die Quertransporteinheit 3 in vier unterschiedliche Neigungslagen verschwenkt werden. Jeder dieser Neigungslagen ist jeweils eine Kappsäge zugeordnet, in der die Hölzer 2 entsprechend der Datensätze geschnitten werden.In the last compartment 6 of the feeder 1 before the transfer to the transverse transport unit 3 is by means of a sensor, preferably a photocell (not shown), checked whether the boards 2 are aligned with its end face 7 with respect to a frontal zero edge. Parallel to the transport of the boards 2, the associated data records are transmitted to the respective saws. The boards 2 are transferred to the transverse transport unit 3, which is set according to the cut list with respect to the feeder 1. As it turned out Fig. 1 results, the transverse transport unit 3 can be adjusted to an axis transverse to the transport direction 4 axis 8 in different positions. Exemplary are in Fig. 1 four pivotal positions I to IV of the transverse transport unit 3 shown. The pivot axis 8 is located in the transfer area 9 of the feeder 1 to the transverse transport unit 3. With the transverse transport unit 3, the woods 2 (not shown) feed levels are passed, which feed the boards to the downstream chop saws. In the exemplary embodiment, the transverse transport unit 3 can be pivoted into four different inclination positions. Each of these inclination positions is assigned in each case a chop saw, in which the woods 2 are cut according to the records.

Die Quertransporteinheit 3 besteht aus parallel nebeneinander liegenden, endlos umlaufenden Riemen 10, mit denen die Bretter 2 in Transportrichtung 11 (Fig. 1) transportiert werden. Parallel zu jedem Riemenstrang 10 ist eine Nockenkette vorgesehen, die einen oder mehrere Nocken 12 aufweist. In den Fig. 1 und 2 ist nur ein Nocken 12 beispielhaft dargestellt. Anhand von Fig. 3 wird die Wirkung dieser Nocken 12 noch im Einzelnen erläutert werden. Der Antrieb der Nockenkette mit den Nocken 12 erfolgt vorteilhaft mittels eines Servomotors. Der Antrieb der Nockenkette kann aber auch mittels Frequenzumrichter oder Drehstrommotor mit Bremse erfolgen. Für die Hubverstellung der Quertransporteinheit 3 wird ein motorischer Antrieb, vorzugsweise ein Servomotor, eingesetzt. Es ist aber auch möglich, die Quertransporteinheit 3 mittels Pneumatik- oder Hydraulikaggregaten zu verschwenken. Die Transportriemen 10 der Quertransporteinheit 3 mit den zugehörigen Umlenkrollen sind in einem gemeinsamen (nicht dargestellten) Gestell gelagert, das mittels des Antriebes in der Höhe verstellt wird.The transverse transport unit 3 consists of parallel adjacent, endlessly circulating belt 10, with which the boards 2 in the transport direction 11 (FIG. Fig. 1 ) be transported. Parallel to each belt strand 10, a cam chain is provided which has one or more cams 12. In the Fig. 1 and 2 only one cam 12 is shown by way of example. Based on Fig. 3 the effect of these cams 12 will be explained in more detail. The drive of the cam chain with the cam 12 is advantageously carried out by means a servomotor. The drive of the cam chain can also be done by means of frequency converter or three-phase motor with brake. For the stroke adjustment of the transverse transport unit 3, a motor drive, preferably a servomotor, is used. But it is also possible to pivot the transverse transport unit 3 by means of pneumatic or hydraulic power units. The transport belt 10 of the transverse transport unit 3 with the associated deflection rollers are mounted in a common (not shown) frame, which is adjusted by means of the drive in height.

An das entsprechende, von der Zuführeinrichtung 1 abgewandte Ende der Quertransporteinheit schließen je nach Neigungslage entsprechende Beschickebenen an, auf denen die Hölzer der jeweiligen Kappsäge zugeführt werden.Depending on the inclination position, corresponding loading planes, to which the woods of the respective chop saw are fed, adjoin the corresponding end of the transverse transport unit facing away from the feed device 1.

Anhand von Fig. 3 wird die Funktion der Nockenkette erläutert. Sie haben jeweils zwei Nocken 12, die über die Riemen 10 der Quertransporteinheit 3 vorstehen. Zunächst werden die Bretter 2 von der Zuführeinrichtung 1 der Quertransporteinheit 3 übergeben, die eine der in Fig. 1 beispielhaft dargestellten Schwenklagen I bis IV einnimmt. Die Nocken 12 sind entsprechend der mittleren Abbildung der Fig. 3 angeordnet. Sind genügend Bretter 2 nacheinander der entsprechenden Beschickungsebene zugeführt worden und soll die Beschickungsebene gewechselt werden, werden die Nockenketten so angetrieben, dass der Nocken 12 an dem in Transportrichtung 11 rückwärtigen Ende der Quertransporteinheit 3 im Übergangsbereich 9 von der Zuführeinrichtung 1 zur Quertransporteinheit 3 in den Transportweg der Bretter 2 gelangt. Die Bewegungsbahn des Nockens 12 ist in Fig. 2 dargestellt. Die Antriebe der Zuführeinrichtung 1 und der Nockenkette sind so aufeinander abgestimmt, dass der Nocken 12, in Richtung der Achse 8 gesehen, im Bereich des letzten Abstandhalters 5 vor der Umlenkung aus der Auflageebene 13 der Zuführeinrichtung 1 auftaucht. Die Stellung der Nocken 12 gemäß Fig. 2 entspricht der unteren Abbildung in Fig. 3. Der andere Nocken 12 jeder Nockenkette befindet sich im Bereich des Untertrums der Riemen 10. Am in Anschlagstellung befindlichen Nocken 12 laufen die von der Zuführeinrichtung 1 kommenden Bretter 2 nacheinander auf. Die in Transportrichtung 11 vor dem Nocken 12 befindlichen Bretter 2 können noch auf die Beschichtungsebene weiter transportiert werden. Der Nocken 12 läuft mit den Riemen 10 mit, bis er an das in Transportrichtung 11 vordere Ende der Quertransporteinheit 3 gelangt (obere Abbildung in Fig. 3). Die Nockenwellen und damit die Nocken 12 werden angehalten und die Quertransporteinheit 3 um die Achse 8 in eine neue Lage geschwenkt, um eine andere Beschickungsebene mit den Brettern 2 zu versorgen. Der in Transportrichtung 11 rückwärtige Nocken 12 der Nockenketten liegt im Untertrumbereich der Riemen 10, so dass die Bretter 2 weiterhin von der Zuführeinrichtung 1 auf die Quertransporteinheit 3 gefördert werden. Die Bretter 2 werden auf diese Weise am stillstehenden Nocken 12 aneinander liegend gesammelt. Sobald die Quertransporteinheit 3 entsprechend geschwenkt worden ist, werden die Nockenketten angetrieben und der Nocken 12 in den Bereich des Untertrums der Riemen 10 verfahren. Die Bretter 2 werden dadurch freigegeben und gelangen auf die neue Beschickungsebene. Die Lage der Nocken 12 unmittelbar nach Freigabe der Bretter 2 ist in der mittleren Abbildung der Fig. 3 dargestellt. Die anderen Nocken 12 befinden sich in einer Lage, dass sie die Zuführung der Bretter 2 von der Zuführeinrichtung 1 auf die Quertransporteinheit 3 nicht behindern. Diese Lage der Nocken 12 entspricht der Grundstellung der Nockenketten, so dass die Riemen 10 der Quertransporteinheit 3 die Bretter 2 von der Zuführeinrichtung 1 übernehmen und der Beschickungsebene übergeben können. In der unteren Abbildung von Fig. 3 ist der linke Nocken 12 dargestellt, der durch Antrieb der entsprechenden Nockenkette in Transportrichtung 11 in Richtung auf seine Sperrstellung (obere Abbildung in Fig. 3) transportiert wird. Während des Transports des Nockens 12 in diese Sperrstellung laufen an seiner Rückseite die von der Zuführrichtung 1 weiter zugeförderten Bretter 2 auf. Hat der Nocken 12 die Sperrstellung entsprechend der oberen Abbildung der Fig. 3 erreicht, wird der Antrieb der Nockenketten angehalten und nunmehr die Quertransporteinheit 3 um die Achse 8 in eine neue Lage geschwenkt, um eine andere Beschickungsebene mit den Brettern 2 zu versorgen. Hat die Quertransporteinheit 3 die neue Schwenklage erreicht, werden die Nockenketten angetrieben und dementsprechend die Nocken 12 in die Freigabestellung verschoben (mittlere Abbildung der Fig. 3), so dass die Bretter 2 einer neuen Beschickungsebene zugeführt werden können.Based on Fig. 3 the function of the cam chain is explained. They each have two cams 12 which project beyond the belts 10 of the transverse transport unit 3. First, the boards 2 are transferred from the feeder 1 of the transverse transport unit 3, one of the in Fig. 1 shown pivoting positions I to IV occupies. The cams 12 are corresponding to the middle figure of Fig. 3 arranged. If enough boards 2 have been successively fed to the corresponding loading level and if the loading level is to be changed, the cam chains are driven such that the cam 12 is moved at the rear end of the transverse transport unit 3 in the transport direction 11 in the transition area 9 from the feed device 1 to the transverse transport unit 3 into the transport path the boards 2 passes. The trajectory of the cam 12 is in Fig. 2 shown. The drives of the feeder 1 and the cam chain are coordinated so that the cam 12, seen in the direction of the axis 8, emerges in the region of the last spacer 5 before the deflection of the support plane 13 of the feeder 1. The position of the cam 12 according to Fig. 2 corresponds to the figure below Fig. 3 , The other cam 12 of each cam chain is located in the region of the lower run of the belt 10 the feeder 1 coming boards 2 in succession. The boards 2 located in the transport direction 11 in front of the cam 12 can still be transported further to the coating plane. The cam 12 runs with the belt 10 until it reaches the front in the transport direction 11 end of the transverse transport unit 3 (upper figure in Fig. 3 ). The camshafts and thus the cams 12 are stopped and the transverse transport unit 3 is pivoted about the axis 8 in a new position to provide another loading level with the boards 2. The cam 12 of the cam chains located in the transport direction 11 lies in the lower run area of the belts 10, so that the boards 2 continue to be conveyed by the feed device 1 onto the transverse transport unit 3. The boards 2 are collected lying on the stationary cam 12 in this way. As soon as the transverse transport unit 3 has been correspondingly swiveled, the cam chains are driven and the cam 12 is moved into the region of the lower run of the belts 10. The boards 2 are thereby released and reach the new loading level. The position of the cam 12 immediately after release of the boards 2 is in the middle figure of Fig. 3 shown. The other cams 12 are in a position that they do not hinder the feeding of the boards 2 from the feeder 1 to the transverse transport unit 3. This position of the cams 12 corresponds to the basic position of the cam chains, so that the belts 10 of the transverse transport unit 3 can take over the boards 2 from the feed device 1 and transfer them to the loading plane. In the lower picture of Fig. 3 the left cam 12 is shown, which by driving the corresponding cam chain in the transport direction 11 in the direction of its locking position (upper illustration in FIG Fig. 3 ) is transported. During transport of the cam 12 into this blocking position, the boards 2, which are further conveyed by the feed direction 1, run on their rear side. The cam 12 has the locking position corresponding to the upper figure of Fig. 3 reached, the drive of the cam chains is stopped and now the transverse transport unit 3 is pivoted about the axis 8 in a new position to provide another loading level with the boards 2. If the transverse transport unit 3 has reached the new pivot position, the cam chains driven and accordingly the cam 12 is moved to the release position (middle illustration of Fig. 3 ), so that the boards 2 can be fed to a new loading level.

Bei Einsatz dieser Vorrichtung haben Fotozellen oder sonstige Sensoren nach der Übergabe der elektronischen Schnittliste an die Kappsägen keinen Einfluss mehr auf die Verteilung der Bretter 2, so dass Fehler bei der nachfolgenden Kapparbeit ausgeschlossen sind. Die Bretter 2 werden zuverlässig in der beschriebenen Weise mittels der Quertransporteinheit 3 den vorbestimmten Beschickebenen und damit auch den richtigen Kappsägen zugeführt. Diese mechanische Lösung erlaubt eine einfach konstruktive Gestaltung der Vorrichtung bei zuverlässigem Betrieb.When using this device, photocells or other sensors after the transfer of the electronic cut list to the chop saws no longer have any influence on the distribution of the boards 2, so that errors in the subsequent Kapparbeit are excluded. The boards 2 are reliably fed in the manner described by means of the transverse transport unit 3 to the predetermined loading levels and thus also the correct chop saws. This mechanical solution allows a simple structural design of the device in reliable operation.

Claims (7)

  1. Device for feeding boards (2) with at least one feeding device (1) and at least one downstream cross conveyor unit (3), which is pivotable around an axis (8) transversal to the feed direction of the boards (2), and at least two feeding planes (I to IV), downstream of the cross conveyer unit (3) and arranged in different heights, whereas within the boards (2) transport path on the cross conveyor unit (3) at least one stop (12) is adjustable, which comprises a drive separated from the drive of the cross conveyor unit (3) which is adjustable respectively positionable by means of a control system without touching the boards (2) and which prevents during the displacement of the cross conveyor unit (3) the boards (2) from being transported further on to the respective feeding plane (I to IV),
    characterized in that the boards (2) on the feeding planes (I to IV) can be fed to at least one chop saw, that the pivot axis (8) of the cross conveyor unit (3) is positioned within the transfer area (9) of the boards (2) from the feeding device (1) to the cross conveyor unit (3), that the stop (12) within the transfer area (9) between the feeding device (1) and the cross conveyor unit (3) is adjustable into the transport path of the boards (2) and that the stop (12) is movable by its drive from the transfer area (9) to the other end of the cross conveyor unit (3).
  2. Device according to claim 1,
    characterized in that by reaching the other end of the cross conveyor unit (3), the stop (12) is halted and the cross conveyor unit (3) is displaced into a new position around the axis (8).
  3. Device according to claim 1 or 2,
    characterized in that the stop (12) is part of a circumferential cam chain.
  4. Device according to one of the claims 1 to 3,
    characterized in that the cross conveyor unit (3) comprises circumferential endless belts (10).
  5. Device according to claim 4,
    characterized in that the cam chain is arranged between two circumferential endless belts (10).
  6. Device according to claim 4 or 5,
    characterized in that the cam chain is arranged besides an circumferential endless belt (10).
  7. Device according to one of the claims 1 to 6,
    characterized in that the stop (12) emerges within the area of a distance piece (5), preferably the last distance piece (5) before being directed out of the support plane (13) of the feeding device (1).
EP20080008394 2007-05-11 2008-05-03 Device for feeding boards to chop saws Active EP1990148B1 (en)

Applications Claiming Priority (1)

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DE200710024219 DE102007024219A1 (en) 2007-05-11 2007-05-11 Device for feeding boards to chop saws

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EP1990148A1 EP1990148A1 (en) 2008-11-12
EP1990148B1 true EP1990148B1 (en) 2010-11-24

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TWM393812U (en) * 2010-04-23 2010-12-01 Long Guo Polar plate stacking device
EP2627592B1 (en) * 2010-10-15 2015-01-28 Sanofi-Aventis U.S. LLC Apparatus and method for loading items
US9090411B2 (en) 2010-10-15 2015-07-28 Sanofi-Aventis U.S. Llc Apparatus and method for loading and unloading containers
JP5759361B2 (en) * 2011-12-27 2015-08-05 株式会社アマダホールディングス Band saw machine and control method of band saw machine
TWI480215B (en) * 2013-02-06 2015-04-11 Chan Li Machinery Co Ltd Dividing system and its packing method
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DE502008001860D1 (en) 2011-01-05
ATE489208T1 (en) 2010-12-15
US8079457B2 (en) 2011-12-20
US20080276778A1 (en) 2008-11-13
DK1990148T3 (en) 2011-03-14
EP1990148A1 (en) 2008-11-12

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