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EP2504125B1 - Machining station and device for machining a workpiece - Google Patents

Machining station and device for machining a workpiece Download PDF

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Publication number
EP2504125B1
EP2504125B1 EP10784702.2A EP10784702A EP2504125B1 EP 2504125 B1 EP2504125 B1 EP 2504125B1 EP 10784702 A EP10784702 A EP 10784702A EP 2504125 B1 EP2504125 B1 EP 2504125B1
Authority
EP
European Patent Office
Prior art keywords
belt
processing
workpiece
endless element
endless
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.)
Active
Application number
EP10784702.2A
Other languages
German (de)
French (fr)
Other versions
EP2504125A1 (en
Inventor
Josef Weiland
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lissmac Maschinenbau GmbH
Original Assignee
Lissmac Maschinenbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lissmac Maschinenbau GmbH filed Critical Lissmac Maschinenbau GmbH
Publication of EP2504125A1 publication Critical patent/EP2504125A1/en
Application granted granted Critical
Publication of EP2504125B1 publication Critical patent/EP2504125B1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B21/00Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/04Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces
    • B24B21/06Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces involving members with limited contact area pressing the belt against the work, e.g. shoes sweeping across the whole area to be ground
    • B24B21/08Pressure shoes; Pressure members, e.g. backing belts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/002Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor for travelling workpieces

Definitions

  • Machining devices for the machining of metallic workpieces such as, for example, satinizing, grinding or deburring machines are known.
  • circumferential machining materials such as friction or abrasive belts are used, which drive past areas to be machined on the workpiece, wherein a working side of the belt is moved in the direction of the workpiece (see, eg NL-A-8801575 ).
  • pressure mechanisms have been realized for processing belts, which are not yet completely satisfactory.
  • Object of the present invention is to improve a device of the type mentioned in terms of technical and economic aspects, in particular with regard to a roughing or roughing of profiled metallic workpieces with comparatively strong burr formation or significant material supernatants.
  • the invention is initially based on a device for processing a strip-shaped or plate-shaped metal workpiece, in particular for deburring cutting edges and / or grinding surfaces of the workpiece, with at least one processing unit, with which a driven rotating processing belt obliquely or transversely to a Feed direction of the workpiece in a working range of the processing belt at least approximately linearly past the workpiece and thereby the workpiece is machinable on a working side of the processing belt, acting on a movable support member pressing means act on a back of the processing belt to a necessary for editing contact between the working side of the machining belt and the workpiece to influence.
  • the workpiece is e.g. on a conveyor table resting on the work area of the processing belt or relative to this moved past.
  • the conveyor table may in particular comprise a driven conveyor belt or driven conveyor rollers.
  • the working side of the closed processing belt is formed on the outside and facing the contacting of the workpiece this.
  • the work page is designed for material removal, e.g. equipped with a variety of tool-like processing elements or provided with a rough hard material surface or a grain, in the manner such as a sandpaper abrasive belt.
  • the core of the invention can be seen in the fact that a drive arrangement is provided, with which the carrier element can be driven by a motor, so that the carrier element moves with the pressure means at least in the working area of the processing belt substantially parallel to the direction of movement of the processing belt.
  • pressing means are positioned almost immovable or positionally pressing against the processing belt.
  • the pressing means may yield slightly perpendicular to the direction of movement or to the running direction of the processing belt.
  • the carrier element can be driven by the pressing means, in particular independently of the revolving processing belt, for example, via its own drive.
  • a movement with or without reversal of motion for example, back and forth or continuously moving in one direction is possible.
  • a separate or only the movement of the carrier element serving drive is present.
  • a direct or direct drive or an indirect drive of the carrier element can be set up.
  • a common drive unit for the processing belt and the carrier element, which is advantageous It is also possible for a common drive unit to be present, with the processing belt and the carrier element being able to be brought to other drive speeds via corresponding gears or over or under gear reduction.
  • the carrier element is designed as a revolving endless element, on which the pressing means are provided such that the pressing means press on the back of the processing belt in a gap.
  • the pressing means are provided such that the pressing means press on the back of the processing belt in a gap.
  • the work area in which the processing belt can come into contact with the workpiece for example, above the conveyor table and thus defines a maximum
  • simultaneously contacted by the pressing means surface of the back of the processing belt according to the invention is acted only on a part by the pressing means. In between the back of the processing tape remains free.
  • the partial application of pressure or force or the contact pressure on fractions of the entire area under consideration in the working area of the rear side of the processing belt therefore leaves gaps between adjacent contact areas on the rear side of the processing belt contactless.
  • the interrupted by the pressing means gap on the back of the processing belt is present on both sides of an applied pressure surface and extends to the next pressing surface or to the end of the work area.
  • the processing belt in the two end regions of the working region is deflected upwards or downwards into the working area or away from it via deflection rollers or the like.
  • the drive for the endless element can be dimensioned smaller or more cost-effective.
  • the endless element may in particular be band, chain and / or string-shaped. Preference is given to a band which, in the working area, is oriented at least approximately parallel to the processing belt and at a predeterminable distance from it.
  • the circulating endless element can be designed in its nature and / or its dimensions matched to the desired pressing action.
  • the endless element has a width dimension, ie transverse to the direction of rotation, which corresponds to the width of the processing belt.
  • an element which, in another way, brings about a movement of the pressure means substantially parallel to the direction of movement of the processing belt.
  • the element may, for example, be slidably mounted in a plane or designed in the manner of a vibrating plate, e.g. driven by an eccentric and moved back and forth.
  • a support arrangement acting in the working area of the processing belt is provided.
  • the support arrangement thus acts in the manner of an abutment in the region in which the endless element acts on the back of the processing belt via the pressing means.
  • the support arrangement is in particular there to be able to apply the necessary force with the pressing means or to prevent an evasion or bending of the endless element upwards or to allow only a predetermined amount. Furthermore, any deflections that may occur in the direction of the support arrangement and thus vibrations of the endless element in the working area can be greatly minimized, especially at higher rotational speeds.
  • the support arrangement comprises a contact section for the support of the endless element such that the endless element can be reset in a direction away from the workpiece away.
  • unevenness or depressions and elevations on the workpiece can be achieved by the processing element.
  • a start setting whereby is achieved by adjusting the position of the endless element together with pressing means in relation to the processing belt, depending on the thickness or height of the workpiece, a pressing action by the pressing means.
  • the endless element with the pressure-exerting means can slightly recede from the workpiece by means of elevations on the workpiece and return to the basic position again when no elevation is effective.
  • the maximum possible deflection path for the endless element can be adjustable in particular via the predeterminable movement path of the contact section.
  • the contact section which is acted upon by a spring force, preferably supports the rear side of the endless element.
  • the endless element with the pressure means act on the processing belt, so that the working side of the processing belt presses against the workpiece with a sufficiently high force.
  • the working side of the machining belt can thus reach any protruding or deeper areas on the workpiece at any time.
  • the abutment section for supporting the endless element comprises a plurality of support elements which are juxtaposed in the direction of the longitudinal extension of the endless element and which are movable relative to a positionally fixed part via prestressed spring means.
  • the strength or possibly the characteristic of the evasive movement if, for example, different support elements are sprung to different degrees, does not have to be uniform or uniform over the entire working area.
  • the support can be segmented subdivided, resulting in different sections of the work area makes different evasive movements of the endless element or the processing belt possible.
  • a support element can be sprung parallel to the rear side of the endless element or angularly movable.
  • the support can also be correspondingly adapted to this angling or inclination, even in the case of an adjustment of the processing belt which is angled relative to the initial orientation of the processing belt, and thus possibly of the endless element.
  • a greater surface finish is achieved.
  • the spring force of the spring means is chosen to be lower, depressions and elevations or edge portions on the workpiece can be processed better.
  • the contact section is preferably flat over a width at a rear side of the endless element.
  • the pressing means comprise a front of the endless element facing the processing belt at least one releasably attached pressure element.
  • the pressing means comprise a base part on which there is at least one pressing element which presses against the rear side of the processing belt.
  • the pressing element comprises elastically yielding sections which, in the state of pressing against the rear side of the machining strip, allow an elastic yielding of the pressing element.
  • the elastic portions may lie in particular in the interior of the pressure element.
  • the processing of profiled sections on the workpiece can thus be done even better.
  • the pressure element can be equipped with a friction-resistant material on its front side, which comes into contact with the rear side of the processing belt, so that the longevity of the pressure element or of the processing belt is advantageously increased.
  • the drive arrangement is designed to drive the endless element and the processing belt in the same direction of movement at different speeds.
  • the speed of the endless element is slightly less than the speed of the processing belt.
  • the endless element is designed to remove and / or replace at least individual pressure elements arranged on the endless element in the installed state of the endless element.
  • the number and / or configuration of the pressing elements arranged on the endless element can therefore be made particularly variable. With a higher number of pressing elements, the processing intensity can be increased.
  • the endless element is designed in such a way to attach thereto differently shaped pressing elements.
  • the endless element can in particular be variably equipped with pressure elements, for example, depending on the type of workpieces to be processed.
  • the pressure element is releasably attached via a sliding fit on the endless element.
  • a sliding seat allows a particularly simple removal or attachment of the pressing element. Another advantage is that an exchange of a pressure element by a handle or without tools is possible.
  • the invention is also directed to a processing station for processing a strip or plate-shaped metallic workpiece, which has a finishing unit with a finishing belt for processing the workpiece, according to the invention there is a device upstream of the finishing unit, which is designed according to one of the above-mentioned devices.
  • the basic idea of this arrangement is that e.g. a smaller, slightly driven sanding belt is positioned in front of a lamellar sanding belt, with only partially pressed areas by the pressing elements, which can change in their position to the workpiece. This allows workpieces in a unit initially free of coarse burrs and the like, before the finishing can be done effectively by the finishing. Without the upstream processing device, a desired high processing quality, in particular of workpieces with strong burrs or material projections, could not be achieved in one unit.
  • FIG. 1 is a front view of a part of a processing station with a processing device 1 according to the invention with a machine body 2 and a processing belt 3 shown.
  • the processing station is designed in particular as a machine unit.
  • a transport arrangement for passing a flat workpiece W to be machined below the processing belt 3.
  • the transport arrangement which includes, for example, a driven moving conveyor belt, the workpiece W transversely to a plane extending parallel to the image plane underlying longitudinal edge 4 of the processing belt 3 through the Processing station to be moved.
  • the processing apparatus 1 serves, in particular, for the rough machining of the workpiece W and is arranged upstream of the finishing unit in the transport direction of the workpiece W.
  • the processing device 1 is formed in the illustrated embodiment as a belt grinding machine in particular for deburring of cutting edges and / or for grinding surfaces of the plate-shaped and recesses V having workpiece W.
  • the workpiece W may be, for example, a metal component which has been cut out of a steel plate by a laser or welding method.
  • the processing belt 3 is configured as an abrasive belt and has a correspondingly designed working side 3a, for example, with a sand grain.
  • the machining belt 3 can be driven with its rear side 3b via two rotating drums 5, wherein one of the two drums 5 is rotationally driven via a drive, not shown, in particular with an electric motor.
  • the processing belt 3 is driven circumferentially, for example, in the direction of the arrow P1 or counterclockwise and linearly transversely or obliquely past the workpiece W.
  • the direction of rotation of the processing belt 3 can also take place in a clockwise direction.
  • the workpiece, which is machined from above via the processing device 1 can also be machined from below by a corresponding lower-side processing device (not shown).
  • the rotational speed of the processing belt 3 is in particular infinitely predetermined.
  • a continuously driven endless element 6 is provided existing, which has a support belt 7 with it on the outside existing pressing elements or Andschreibzann 8.
  • the endless element 6 runs in operation in particular in the same direction as the processing belt 3, ie according to FIG. 1 counterclockwise or in the direction of P2, but slower than the processing belt 3. This ensures that in continuous operation in the work area not always the same places on the processing belt 3 are pressurized and in particular over the life of the processing device 1, the entire working side 3a is evenly worn which is beneficial.
  • the endless element 6 is tuned to the processing belt 3 that press the Andschreib violet 8 at least in a working area A of the processing belt 3 on the back 3b of the processing belt 3 and thus the working side 3a against the workpiece W, whereby a corresponding pressure or Kraftbeetzschung for Workpiece processing is realized.
  • the rotational speed of the endless element 6 is advantageously slightly lower than the rotational speed of the processing belt 3, wherein it is essential for high processing quality that in the working area A, the endless element 6 is aligned at least almost parallel to the processing belt 3.
  • the support belt 7 has a plurality of uniformly spaced Andschreib legin 8, each having the same length dimension 1.
  • the intermediate space with a length dimension L that is thus present between adjacent pressure shoes 8 is advantageously about three times as large as the longitudinal dimension 1 of a pressure shoe 8.
  • other aspect ratios L to 1 or lengths 1 and L may also be advantageous be. It is also conceivable that on an endless element not all pressure shoes 8 or intermediate spaces have the same length 1 or L, but e.g. are all different or coincide alternately.
  • FIG. 1 illustrates, it is also advantageously possible, instead of a total surface pressure surface on the back 3b of the processing belt 3 to set up a partial or gap-pressing surface.
  • the workpiece W can readily be further processed immediately, for example, by a person by hand without Protective measures such as gloves are taken.
  • a cooling phase can be omitted as a rule.
  • the endless element 6 can be driven (not shown) due to the low surface pressure by means of Andschreibzan 8 on the back 3b of the processing belt 3, for example, a relatively low-power drive motor, which drives a drive roller 9, by which the endless element 6 is guided.
  • a relatively low-power drive motor which drives a drive roller 9, by which the endless element 6 is guided.
  • a support arrangement 13 is provided with support elements designed as bearing elements 14. The carrier belt 7 is thus stabilized on the back between the guide rollers 11 and 12.
  • abutment elements 14 are provided and lie with a bottom surface 14 a flat on the back 7 b of the support belt 7 at.
  • the abutment elements 14 are each loaded with a spring force or resiliently received on a continuous and positionally fixed receiving rail 15.
  • the resilient receptacle is realized for each contact elements 14 via two setscrews 16 each with external thread, which are provided on the rear side of the contact element 14 and engage through corresponding holes in the receiving rail 15 therethrough.
  • On the top 15a of the receiving rail 15 are the threaded pins 16, so that via threaded nuts 17, 18 and their Aufschraubposition the distance of the contact elements 14 to the receiving rail 15 and thus the absolute position of the contact elements 14 is defined.
  • each set screw 16 For spacing of the contact elements 14 of the receiving rail 15 are biased about each set screw 16 coil springs 19 between a bottom 15 b of the receiving rail 15 and a top of the Clamping elements 14. Immediately above the contact element 14, a further threaded nut 20 is screwed onto the threaded pin 16, which is encompassed by the coil spring 19.
  • the machining belt 3 can move upward against the spring force of the spiral spring 19 as indicated by arrow P6 in FIG FIG. 2 dodge. If a region of the working side 3a, which is acted upon at the rear by a pressure shoe 8, on a depression on the workpiece W, due to the tensioned coil spring 19, the processing belt in the direction of arrow P5 is pressed down or can angularly according to the arrows P3 and P4 ( please refer FIG. 2 ), so that effective and complete, a desired edge or surface processing on the workpiece W takes place by means of the moving past processing belt 3.
  • a spring action can be set on the processing belt 3 or can be selected correspondingly higher or lower pressure forces.
  • the characteristic of the angular adjustment of Andrück crevic 8 can be influenced by the coil springs 19. With harder coil springs, more can be aimed at a surface treatment, whereas with softer coil springs a grinding of profiled or contoured areas of the workpiece can be done more intensively or improved.
  • coil springs 19 shown it is also possible to use other springs, such as plate springs or other elastic elements, e.g. Buffer elements in the nature of rubber buffers.
  • FIG. 5 and FIG. 6 show the Andschreibschuh 8 in detail with a sliding shoe 8a, which is removably received in a Gleitschuhitati 8b.
  • a sliding seat for the sliding block 8 a is realized, wherein the Sliding shoe carrier 8b via holes 21 with corresponding connecting means such as screws 30 (see FIG. 3 ) is connectable to the carrier belt 7.
  • the screw 30 engages along the axis S (FIG. FIGS. 5 and 6 ) into the shoe 8a to fix it on the shoe carrier 8b inside.
  • the sliding shoe 8a in particular has a slightly curved or convex upper side 26, which relates to a layer which consists of a comparatively friction-resistant material.
  • An inner subsequent further layer 27 of the sliding block 8a may consist of a comparatively resilient or elastic material, for example a rubber or foam material.
  • a lowermost layer 28 of the sliding shoe 8a having the web portions 24, 25 is made of a comparatively hard material.
  • the shoe holder 8b which has a recess or a concave portion 29 in the middle.
  • FIG. 3 and FIG. 4 show the endless element 6 in a single view once from the front and once from above, the attachment via attachment screws 30 for fixing the Gleitschuhong 8b on the support belt 7 is shown as an example.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Feeding Of Workpieces (AREA)

Description

Stand der TechnikState of the art

Bearbeitungsvorrichtungen zum materialabhebenden Bearbeiten von metallischen Werkstücken wie z.B. Satinier-, Schleif- bzw. Entgratmaschinen sind bekannt. Dabei werden beispielsweise umlaufende Bearbeitungsmaterialien wie Reib- oder Schleifbänder eingesetzt, welche an zu bearbeitenden Bereichen am Werkstück vorbeifahren, wobei eine Arbeitsseite des Bandes in Richtung des Werkstücks bewegt wird (siehe z.B. NL-A-8801575 ). Um die Bearbeitungswirkung insbesondere bei einer Vorbearbeitung für das Entfernen von überstehenden bzw. groben Materialbereichen auch von stärker profilierten Werkstücken beeinflussen zu können, sind bislang für Bearbeitungsbänder unterschiedliche Andrückmechanismen realisiert, wobei diese noch nicht vollständig zufriedenstellend sind.Machining devices for the machining of metallic workpieces such as, for example, satinizing, grinding or deburring machines are known. In this case, for example, circumferential machining materials such as friction or abrasive belts are used, which drive past areas to be machined on the workpiece, wherein a working side of the belt is moved in the direction of the workpiece (see, eg NL-A-8801575 ). In order to be able to influence the processing effect, in particular in a pre-processing for the removal of protruding or coarse material areas of more profiled workpieces, so far different pressure mechanisms have been realized for processing belts, which are not yet completely satisfactory.

Aufgabe und Vorteile der ErfindungPurpose and advantages of the invention

Aufgabe der vorliegenden Erfindung ist es, eine Vorrichtung der eingangs genannten Art im Hinblick auf technische und wirtschaftliche Gesichtspunkte zu verbessern, insbesondere im Hinblick auf eine Vor- bzw. Grobbearbeitung von profilierten metallischen Werkstücken mit vergleichsweise starker Gratausbildung bzw. merklichen Materialüberständen.Object of the present invention is to improve a device of the type mentioned in terms of technical and economic aspects, in particular with regard to a roughing or roughing of profiled metallic workpieces with comparatively strong burr formation or significant material supernatants.

Diese Aufgabe wird durch eine Vorrichtungs gemäß Anspruch 1 gelöst. In den abhängigen Ansprüchen sind vorteilhafte Weiterbildungen der Erfindung aufgezeigt.This object is achieved by a device according to claim 1. In the dependent claims advantageous developments of the invention are shown.

Die Erfindung geht zunächst aus von einer Vorrichtung zum Bearbeiten eines band- oder plattenförmigen metallischen Werkstücks, insbesondere zum Entgraten von Schnittkanten und/oder zum Abschleifen von Oberflächen des Werkstücks, mit wenigstens einer Bearbeitungseinheit, mit welcher ein angetrieben umlaufendes Bearbeitungsband schräg bzw. quer zu einer Vorschubrichtung des Werkstücks in einem Arbeitsbereich des Bearbeitungsbandes wenigstens annähernd linear am Werkstück vorbeiführbar und dabei über eine Arbeitsseite des Bearbeitungsbandes das Werkstück bearbeitbar ist, wobei an einem bewegbaren Trägerelement vorhandene Andrückmittel auf eine Rückseite des Bearbeitungsbandes einwirken, um einen für das Bearbeiten notwendigen Kontakt zwischen der Arbeitsseite des Bearbeitungsbandes und dem Werkstück zu beeinflussen. Das Werkstück wird dabei z.B. auf einem Fördertisch aufliegend an dem Arbeitsbereich des Bearbeitungsbandes bzw. relativ zu diesem vorbeibewegt. Der Fördertisch kann insbesondere ein angetriebenes Förderband bzw. angetriebene Förderrollen umfassen.The invention is initially based on a device for processing a strip-shaped or plate-shaped metal workpiece, in particular for deburring cutting edges and / or grinding surfaces of the workpiece, with at least one processing unit, with which a driven rotating processing belt obliquely or transversely to a Feed direction of the workpiece in a working range of the processing belt at least approximately linearly past the workpiece and thereby the workpiece is machinable on a working side of the processing belt, acting on a movable support member pressing means act on a back of the processing belt to a necessary for editing contact between the working side of the machining belt and the workpiece to influence. The workpiece is e.g. on a conveyor table resting on the work area of the processing belt or relative to this moved past. The conveyor table may in particular comprise a driven conveyor belt or driven conveyor rollers.

Die Arbeitsseite des geschlossenen Bearbeitungsbandes ist daran außenseitig ausgebildet und für die Kontaktierung des Werkstücks diesem zugewandt. Für das Bearbeiten ist die Arbeitsseite für einen Materialabtrag ausgestaltet, z.B. mit einer Vielzahl von werkzeugartigen Bearbeitungselementen bestückt bzw. mit einer rauen Hartmaterialoberfläche bzw. einer Körnung versehen, in der Art wie beispielsweise bei einem Sandpapier-Schleifband.The working side of the closed processing belt is formed on the outside and facing the contacting of the workpiece this. For editing, the work page is designed for material removal, e.g. equipped with a variety of tool-like processing elements or provided with a rough hard material surface or a grain, in the manner such as a sandpaper abrasive belt.

Der Kern der Erfindung ist darin zu sehen, dass eine Antriebsanordnung vorgesehen ist, mit welcher das Trägerelement motorisch antreibbar ist, so dass sich das Trägerelement mit den Andrückmitteln zumindest in dem Arbeitsbereich des Bearbeitungsbandes im Wesentlichen parallel zur Bewegungsrichtung des Bearbeitungsbandes bewegt.The core of the invention can be seen in the fact that a drive arrangement is provided, with which the carrier element can be driven by a motor, so that the carrier element moves with the pressure means at least in the working area of the processing belt substantially parallel to the direction of movement of the processing belt.

Auf diese Weise lässt sich einfach eine unerwünschte Reibung bzw. ein Abrieb der Reibpartner, welche die Andrückmittel und die Rückseite des Bearbeitungsbandes umfassen, minimieren.In this way, it is easy to minimize unwanted friction or abrasion of the friction partners, which comprise the pressing means and the back of the processing belt.

Bisher werden Andrückmittel nahezu unbeweglich bzw. positionsfest drückend gegen das Bearbeitungsband positioniert. Gegebenenfalls können die Andrückmittel geringfügig senkrecht zur Bewegungsrichtung bzw. zur Laufrichtung des Bearbeitungsbandes nachgeben.So far, pressing means are positioned almost immovable or positionally pressing against the processing belt. Optionally, the pressing means may yield slightly perpendicular to the direction of movement or to the running direction of the processing belt.

Dies ist mit einer über die gesamte Rückseite des Bearbeitungsbandes wirksamen Reibung zwischen den Andrückmitteln und dem Bearbeitungsband verbunden.This is associated with an effective over the entire back of the processing belt friction between the pressing means and the processing belt.

So treten durch das Einwirken der Andrückmittel diesbezüglich erhebliche Reibeffekte also erhöhter Abrieb bzw. Abnutzungen, Verschmutzungen bzw. Verschleiß und eine Reibwärmeentwicklung auf, was insgesamt unerwünschte Folgeeffekte sind. Neben einer reduzierten Lebenserwartung der Reibpartner ist damit ein erhöhter Pflege- und Wartungsaufwand verbunden. Außerdem muss bisher mit der Zeit eine deutliche Abnahme der Bearbeitungswirkung der Anordnung hingenommen werden. Die genannten Nachteile lassen sich erfindungsgemäß vermeiden oder wenigstens stark minimieren.Thus, by the action of the pressing means in this regard considerable friction effects so increased abrasion or wear, dirt or wear and a frictional heat development, which are undesirable overall consequences. In addition to a reduced life expectancy of the friction partners is thus associated with increased care and maintenance. In addition, so far with time a significant decrease in the processing effect of the arrangement must be accepted. The disadvantages mentioned can be avoided according to the invention or at least greatly minimized.

Im Hinblick auf die Antriebsanordnung kann das Trägerelement mit den Andrückmitteln insbesondere unabhängig vom umlaufenden Bearbeitungsband z.B. über einen eigenen Antrieb angetrieben werden. Dabei ist grundsätzlich eine Bewegung mit oder ohne Bewegungsumkehr also z.B. hin und her oder kontinuierlich in eine Richtung bewegend möglich. Außerdem ist es vorteilhaft, dass ein separater bzw. ein nur der Bewegung des Trägerelementes dienender Antrieb vorhanden ist. Grundsätzlich kann ein direkter bzw. unmittelbarer Antrieb oder ein indirekter Antrieb des Trägerelementes eingerichtet sein. Neben separaten bzw. getrennten Antriebseinheiten für das Bearbeitungsband und das Trägerelement, was vorteilhaft ist, kann auch eine gemeinsame Antriebseinheit vorhanden sein, wobei Bearbeitungsband und Trägerelement über entsprechende Getriebe bzw. Über- oder Untersetzung jeweils auf andere Antriebsdrehzahlen bringbar sind. Gemäß der Erfindung ist das Trägerelement als umlaufendes Endloselement ausgebildet, an dem die Andrückmittel derart vorhanden sind, dass die Andrückmittel auf die Rückseite des Bearbeitungsbandes lückend drücken. Von dem Arbeitsbereich, in welchem das Bearbeitungsband mit dem Werkstück z.B. oberhalb des Fördertisches in Kontakt kommen kann und somit eine maximale, gleichzeitig von den Andrückmitteln kontaktierbare Fläche der Rückseite des Bearbeitungsbandes definiert, wird erfindungsgemäß nur auf ein Teil durch die Andrückmittel eingewirkt. Dazwischen bleibt die Rückseite des Bearbeitungsbandes frei. Die partielle Druck- bzw. Kraftbeaufschlagung bzw. der Andrückkontakt auf Bruchteilen der gesamten betrachteten Fläche im Arbeitsbereich der Rückseite des Bearbeitungsbandes lässt also Lücken zwischen benachbarten Andrückbereichen auf der Rückseite des Bearbeitungsbandes kontaktfrei.With regard to the drive arrangement, the carrier element can be driven by the pressing means, in particular independently of the revolving processing belt, for example, via its own drive. In principle, a movement with or without reversal of motion, for example, back and forth or continuously moving in one direction is possible. Moreover, it is advantageous that a separate or only the movement of the carrier element serving drive is present. In principle, a direct or direct drive or an indirect drive of the carrier element can be set up. In addition to separate or separate drive units for the processing belt and the carrier element, which is advantageous It is also possible for a common drive unit to be present, with the processing belt and the carrier element being able to be brought to other drive speeds via corresponding gears or over or under gear reduction. According to the invention, the carrier element is designed as a revolving endless element, on which the pressing means are provided such that the pressing means press on the back of the processing belt in a gap. Of the work area in which the processing belt can come into contact with the workpiece, for example, above the conveyor table and thus defines a maximum, simultaneously contacted by the pressing means surface of the back of the processing belt, according to the invention is acted only on a part by the pressing means. In between the back of the processing tape remains free. The partial application of pressure or force or the contact pressure on fractions of the entire area under consideration in the working area of the rear side of the processing belt therefore leaves gaps between adjacent contact areas on the rear side of the processing belt contactless.

Eine im betrachteten Arbeitsbereich des Bearbeitungsbandes vollflächige oder weitgehend vollflächige Beaufschlagung der Bearbeitungsband-Rückseite soll mit der Lückenbildung zwischen den Andrückmitteln gerade vermieden werden. Die durch die Andrückmittel unterbrochene Lücke auf der Bearbeitungsband-Rückseite ist beidseitig einer beaufschlagten Andrückfläche vorhanden und reicht bis zur nächsten Andrückfläche oder bis zum Ende des Arbeitsbereichs. In der Regel wird das Bearbeitungsband in den beiden Endbereichen des Arbeitsbereichs über Umlenkrollen oder dergleichen nach oben oder unten in den Arbeitsbereich hinein bzw. von diesem weg umgelenkt.One in the considered work area of the processing belt full-area or largely full-surface action on the back of the processing tape should be just avoided with the gap formation between the pressing. The interrupted by the pressing means gap on the back of the processing belt is present on both sides of an applied pressure surface and extends to the next pressing surface or to the end of the work area. As a rule, the processing belt in the two end regions of the working region is deflected upwards or downwards into the working area or away from it via deflection rollers or the like.

Mit den Lücken wird eine gegenüber einer vollflächigen Andrückung verminderte Antriebskraft nötig, so dass die Antriebsanordnung zum Antrieb des Bearbeitungsbandes bzw. des Endloselements mit geringerer Leistung ausgelegt werden kann.With the gaps, a reduced driving force compared to a full-surface pressing is necessary, so that the drive arrangement for driving the processing belt or the endless element can be designed with lower power.

Insbesondere kann der Antrieb für das Endloselement kleiner dimensioniert bzw. kostengünstiger gewählt werden.
Das Endloselement kann insbesondere band-, ketten- und/oder schnurförmig sein. Bevorzugt ist ein Band, welches im Arbeitsbereich zumindest nahezu parallel ausgerichtet zum Bearbeitungsband und mit vorgebbarem Abstand zu diesem läuft. Das umlaufende Endloselement kann in seiner Beschaffenheit und/oder seinen Abmessungen abgestimmt auf die gewünschte Andrückwirkung ausgebildet sein. Insbesondere weist das Endloselement eine Breitenabmessung auf, also quer zur Umlaufrichtung, die der Breite des Bearbeitungsbandes entspricht.
In particular, the drive for the endless element can be dimensioned smaller or more cost-effective.
The endless element may in particular be band, chain and / or string-shaped. Preference is given to a band which, in the working area, is oriented at least approximately parallel to the processing belt and at a predeterminable distance from it. The circulating endless element can be designed in its nature and / or its dimensions matched to the desired pressing action. In particular, the endless element has a width dimension, ie transverse to the direction of rotation, which corresponds to the width of the processing belt.

Anstatt eines umlaufenden Endlosbandes kann auch ein Element eingesetzt werden, das auf eine andere Weise eine Bewegung der Andrückmittel im Wesentlichen parallel zur Bewegungsrichtung des Bearbeitungsbandes herbeiführt. Das Element kann beispielsweise in einer Ebene verschieblich gelagert bzw. in der Art einer Schwingplatte ausgestaltet sein, die sich z.B. über einen Exzenter angetrieben hin und her bewegt.Instead of a circulating endless belt, it is also possible to use an element which, in another way, brings about a movement of the pressure means substantially parallel to the direction of movement of the processing belt. The element may, for example, be slidably mounted in a plane or designed in the manner of a vibrating plate, e.g. driven by an eccentric and moved back and forth.

Dabei kann es jedoch im Umkehrpunkt der Hin- und Herbewegung zu einer Stillstandsmarkierung auf dem Werkstück kommen, was zu beachten ist bzw. ggf. eine entsprechende Nachbearbeitung des Werkstücks nötig machen kann.However, at the reversal point of the reciprocating movement, a standstill marking on the workpiece can occur, which must be taken into account or, if necessary, necessitate corresponding post-processing of the workpiece.

Weiter wird vorgeschlagen, dass eine im Arbeitsbereich des Bearbeitungsbandes wirkende Abstützanordnung vorgesehen ist. Die Abstützanordnung wirkt also in der Art eines Gegenlagers in dem Bereich, in welchem das Endloselement über die Andrückmittel auf die Rückseite des Bearbeitungsbandes einwirkt. Die Abstützanordnung ist insbesondere dazu da, um mit den Andrückmitteln die nötige Kraft aufbringen zu können bzw. dabei ein Ausweichen oder Durchbiegen des Endloselements nach oben zu unterbinden bzw. nur in einem vorgebbaren Maß zu ermöglichen. Des Weiteren können damit ggf. auftretende Auslenkungen in Richtung der Abstützanordnung und damit Vibrationen des Endloselements im Arbeitsbereich insbesondere bei höheren Umlaufgeschwindigkeiten stark minimiert werden.It is further proposed that a support arrangement acting in the working area of the processing belt is provided. The support arrangement thus acts in the manner of an abutment in the region in which the endless element acts on the back of the processing belt via the pressing means. The support arrangement is in particular there to be able to apply the necessary force with the pressing means or to prevent an evasion or bending of the endless element upwards or to allow only a predetermined amount. Furthermore, any deflections that may occur in the direction of the support arrangement and thus vibrations of the endless element in the working area can be greatly minimized, especially at higher rotational speeds.

Vorteilhafterweise umfasst die Abstützanordnung einen Anlageabschnitt für die Abstützung des Endloselements derart, dass das Endloselement rückstellbar in eine Richtung vom Werkstück weg ausweichen kann. So können auch Unebenheiten bzw. Vertiefungen und Erhöhungen am Werkstück vom Bearbeitungselement erreicht werden. Dabei wird von einer Start-Einstellung ausgegangen, wodurch z.B. durch eine Einstellung der Position des Endloselements samt Andrückmittel in Relation zum Bearbeitungsband, abhängig von der Dicke bzw. Höhe des Werkstücks eine Andrückwirkung durch die Andrückmittel erzielt wird. Bezogen auf diese Grundeinstellung kann durch Erhöhungen am Werkstück das Endloselement mit den Andrückmitteln vom Werkstück etwas zurückweichen und wieder in die Grundstellung zurück gelangen, wenn keine Erhöhung mehr wirksam ist. Der maximal mögliche Ausweichweg für das Endloselement kann über den vorgebbaren Bewegungsweg des Anlageabschnitts insbesondere einstellbar sein.Advantageously, the support arrangement comprises a contact section for the support of the endless element such that the endless element can be reset in a direction away from the workpiece away. Thus, unevenness or depressions and elevations on the workpiece can be achieved by the processing element. It is assumed that a start setting, whereby is achieved by adjusting the position of the endless element together with pressing means in relation to the processing belt, depending on the thickness or height of the workpiece, a pressing action by the pressing means. Based on this basic setting, the endless element with the pressure-exerting means can slightly recede from the workpiece by means of elevations on the workpiece and return to the basic position again when no elevation is effective. The maximum possible deflection path for the endless element can be adjustable in particular via the predeterminable movement path of the contact section.

Bevorzugt stützt der Anlageabschnitt mit einer Federkraft beaufschlagt die Rückseite des Endloselementes ab. So kann über die Federkraft das Endloselement mit den Andrückmitteln auf das Bearbeitungsband wirken, so dass die Arbeitsseite des Bearbeitungsbandes mit ausreichend hoher Kraft gegen das Werkstück drückt. Die Arbeitsseite des Bearbeitungsbandes kann damit jederzeit sämtliche überstehende bzw. tiefer liegende Bereiche am Werkstück erreichen.The contact section, which is acted upon by a spring force, preferably supports the rear side of the endless element. Thus, via the spring force, the endless element with the pressure means act on the processing belt, so that the working side of the processing belt presses against the workpiece with a sufficiently high force. The working side of the machining belt can thus reach any protruding or deeper areas on the workpiece at any time.

Überdies wird vorgeschlagen, dass der Anlageabschnitt für die Abstützung des Endloselements mehrere in Richtung der Längserstreckung des Endloselementes nebeneinander positionierte Stützelemente umfasst, die gegenüber einem positionsfesten Teil über vorgespannte Federmittel bewegbar sind. Die Stärke bzw. ggf. die Charakteristik der Ausweichbewegung, wenn z.B. unterschiedliche Stützelemente unterschiedlich stark gefedert sind, muss dadurch nicht über den gesamten Arbeitsbereich gleichartig bzw. einheitlich sein. So kann die Abstützung segmentweise unterteilt wirken, was in unterschiedlichen Abschnitten des Arbeitsbereiches unterschiedliche Ausweichbewegungen des Endloselements bzw. des Bearbeitungsbandes möglich macht. Damit lassen sich mit jedem Stützelement, insbesondere auch zur selben Zeit, unterschiedliche starke Ausweichbewegungen realisieren, was bei einer Bearbeitung von unterschiedlichen Werkstücken bzw. unterschiedlich stark erhöht bzw. vertieft ausgebildeten Werkstücken vorteilhaft ist.
Grundsätzlich kann ein Stützelement parallel zur Rückseite des Endloselements gefedert bewegbar sein oder winklig dazu. So kann beim Bearbeitungsvorgang auch bei einer gegenüber der Ausgangsorientierung des Bearbeitungsbandes winkligen Anstellung des Bearbeitungsbandes und damit ggf. des Endloselements die Abstützung entsprechend angepasst an diese Anwinklung bzw. Neigung erfolgen.
Bei härteren Federanordnungen zur Lagerung des umlaufenden Endlosmittels wird eine stärkere Oberflächenbearbeitung erreicht. Wird hingegen die Federkraft der Federmittel geringer gewählt, können Vertiefungen und Erhöhungen bzw. Kantenabschnitte am Werkstück besser bearbeitet werden.
Insbesondere ist es vorteilhaft, dass durch die Bandaufnahme der Andrückelemente eine winklige Anstellung dieser Elemente und damit auch des Bearbeitungsbandes auf der Arbeitsseite relativ zum Werkstück möglich ist. So lassen sich auch besondere Ausformungen und schräg gestellte Kanten oder Bereiche tiefer liegend als eine Oberfläche des Werkstücks bearbeiten.
Der Anlageabschnitt liegt bevorzugt flächig über eine Breite an einer Rückseite des Endloselementes an. So kann für einen betrachteten Längsabschnitt des Bearbeitungsbandes über die gesamte Breite die Abstützung gleichartig erfolgen. Dies dient insbesondere bei flächigen zu bearbeitenden Abschnitten des Werkstücks zu einer gleichmäßigeren Oberflächenbearbeitung. Gemäß der Erfindung umfassen die Andrückmittel an einer zum Bearbeitungsband gerichteten Vorderseite des Endloselementes zumindest ein lösbar angebrachtes Andrückelement. So können vorteilhaft wahlweise unterschiedliche ausgebildete Endloselemente angebracht werden. Auch ein Austausch von beschädigten oder abgenutzten Andrückelementen ist damit vorteilhaft möglich.
Besonders vorteilhaft ist es, dass die Andrückmittel ein Basisteil umfassen, an dem zumindest ein Andrückelement vorhanden ist, das gegen die Rückseite des Bearbeitungsbandes drückt.
Gemäß einer bevorzugten Ausführungsform umfasst das Andrückelement elastisch nachgiebige Abschnitte, welche im Zustand des Andrückens gegen die Rückseite des Bearbeitungsbandes ein elastisches Nachgeben des Andrückelements ermöglichen. Die elastischen Abschnitte können insbesondere im Inneren des Andrückelements liegen. So kann das Andrückelement selbst eine Ausgleichbewegung vollziehen, wodurch eine Anwinkelung bzw. Anpassung an eine unterschiedlich gestaltete Werkstückoberfläche möglich ist. Die Bearbeitung von profilierten Abschnitten am Werkstück kann damit noch besser erfolgen. Das Andrückelement kann auf seiner Vorderseite, die mit der Rückseite des Bearbeitungsbandes in Kontakt kommt, mit einem reibbeständigen Material bestückt sein, so dass die Langlebigkeit des Andrückelements bzw. des Bearbeitungsbandes vorteilhaft erhöht wird.
Es ist überdies vorteilhaft, dass die Antriebsanordnung ausgebildet ist, das Endloselement und das Bearbeitungsband in der gleichen Bewegungsrichtung mit unterschiedlicher Geschwindigkeit anzutreiben. So kann die Reibung zwischen den Andrückmitteln und dem Bearbeitungsband auf der Rückseite des Bearbeitungsbandes durch die vergleichsweise geringe Relativbewegung zwischen den mit dem Endloselement mitbewegten Andrückmitteln und dem Bearbeitungsband vergleichsweise gering gehalten werden. Außerdem trägt dies auch dazu bei, dass aufgrund der angesprochenen Reibung eine dabei auftretende Wärmeentwicklung gering gehalten wird. Das Werkstück wird daher nur relativ gering erwärmt. Außerdem werden aufgrund der verbleibenden Relativbewegung zwischen dem Endloselement und dem Bearbeitungsband für eine betrachtete Bearbeitungsphase nicht immer die gleichen Stellen der Arbeitsseite des Bearbeitungsbandes auf das Werkstück gedrückt, was unerwünscht ist und zu stark abgenutzten und zu nicht oder kaum abgenutzten Bereichen führen würde, sondern sämtliche Bereiche der Arbeitsseite des Bearbeitungsbandes werden gleichmäßig abgenutzt.
Moreover, it is proposed that the abutment section for supporting the endless element comprises a plurality of support elements which are juxtaposed in the direction of the longitudinal extension of the endless element and which are movable relative to a positionally fixed part via prestressed spring means. The strength or possibly the characteristic of the evasive movement, if, for example, different support elements are sprung to different degrees, does not have to be uniform or uniform over the entire working area. Thus, the support can be segmented subdivided, resulting in different sections of the work area makes different evasive movements of the endless element or the processing belt possible. In this way, with each support element, in particular also at the same time, different strong evasive movements can be realized, which is advantageous in the case of machining of different workpieces or workpieces that are raised or recessed differently.
In principle, a support element can be sprung parallel to the rear side of the endless element or angularly movable. Thus, during the machining process, the support can also be correspondingly adapted to this angling or inclination, even in the case of an adjustment of the processing belt which is angled relative to the initial orientation of the processing belt, and thus possibly of the endless element.
For harder spring arrangements for the storage of circulating endless means a greater surface finish is achieved. If, on the other hand, the spring force of the spring means is chosen to be lower, depressions and elevations or edge portions on the workpiece can be processed better.
In particular, it is advantageous that an angular adjustment of these elements and thus also of the processing belt on the working side relative to the workpiece is possible by the tape recording of the pressing. Thus, even special formations and inclined edges or areas deeper lying as a surface of the workpiece to edit.
The contact section is preferably flat over a width at a rear side of the endless element. Thus, for a considered longitudinal section of the processing belt over the entire width of the support can be made similar. This serves in particular for flat sections of the workpiece to be machined to a more uniform surface treatment. According to the invention, the pressing means comprise a front of the endless element facing the processing belt at least one releasably attached pressure element. Thus, advantageously, different trained endless elements can be attached. An exchange of damaged or worn pressing elements is thus advantageously possible.
It is particularly advantageous that the pressing means comprise a base part on which there is at least one pressing element which presses against the rear side of the processing belt.
According to a preferred embodiment, the pressing element comprises elastically yielding sections which, in the state of pressing against the rear side of the machining strip, allow an elastic yielding of the pressing element. The elastic portions may lie in particular in the interior of the pressure element. Thus, the pressure element itself perform a compensating movement, whereby a Anwinkelung or adaptation to a differently shaped workpiece surface is possible. The processing of profiled sections on the workpiece can thus be done even better. The pressure element can be equipped with a friction-resistant material on its front side, which comes into contact with the rear side of the processing belt, so that the longevity of the pressure element or of the processing belt is advantageously increased.
It is also advantageous that the drive arrangement is designed to drive the endless element and the processing belt in the same direction of movement at different speeds. Thus, the friction between the pressing means and the processing belt on the back of the processing belt by the comparatively small relative movement between the moving together with the endless element pressing means and the processing belt can be kept relatively low. In addition, this also contributes to the fact that due to the mentioned friction, a heat development occurring is kept low. The workpiece is therefore heated only relatively low. In addition, due to the remaining relative movement between the endless element and the processing belt for a considered processing phase is not always pressed the same points of the working side of the processing belt on the workpiece, which is undesirable and would lead to heavily worn and not or hardly worn areas, but all areas of the working side of the processing belt become evenly worn.

Vorteilhafterweise ist bei gleicher Bewegungsrichtung mit dem Bearbeitungsband die Geschwindigkeit des Endloselements etwas geringer als die Geschwindigkeit des Bearbeitungsbandes.Advantageously, with the same direction of movement with the processing belt, the speed of the endless element is slightly less than the speed of the processing belt.

Nicht ausgeschlossen ist aber auch eine identische Geschwindigkeit von Endloselement mit Andrückmitteln und Bearbeitungsband. Eine Reibung zwischen diesen Teilen tritt dann nicht auf. Durch z.B. unterschiedliche Bandlängen werden trotzdem nicht immer die gleichen Bereiche des Bearbeitungsbandes im Betrieb abgenutzt, da sich die Positionen, in welcher ein Einwirken durch die Andrückmittel erfolgt, nur im Arbeitsbereich erfolgt und durch den Umlauf beider Bänder sich regelmäßig ändert.Not excluded is also an identical speed of endless element with pressing means and processing tape. A friction between these parts does not occur then. By e.g. Nevertheless, different lengths of tape are not always worn the same areas of the processing belt during operation, since the positions in which an action by the pressing means, takes place only in the work area and changes regularly by the circulation of both bands.

Besonders vorteilhaft ist es, dass das Endloselement ausgebildet ist, um im eingebauten Zustand des Endloselements zumindest einzelne am Endloselement angeordnete Andrückelemente zu entfernen und/oder auszutauschen. Die Anzahl und/oder Ausgestaltung der am Endloselement angeordneten Andrückelemente lässt sich daher besonders variabel gestalten. Bei einer höheren Anzahl von Andrückelementen kann die Bearbeitungsintensität erhöht werden.It is particularly advantageous that the endless element is designed to remove and / or replace at least individual pressure elements arranged on the endless element in the installed state of the endless element. The number and / or configuration of the pressing elements arranged on the endless element can therefore be made particularly variable. With a higher number of pressing elements, the processing intensity can be increased.

Weiter ist es vorteilhaft, dass das Endloselement derart ausgebildet ist, daran unterschiedlich ausgebildete Andrückelemente anzubringen. So kann das Endloselement insbesondere variabel mit Andrückelementen bestückt werden, z.B. je nach Art der zu bearbeitenden Werkstücke. Insbesondere ist es vorteilhaft, dass das Andrückelement über einen Schiebesitz am Endloselement lösbar angebracht ist. Ein Schiebesitz ermöglicht ein besonders einfaches Abnehmen bzw. Anbringen des Andrückelements. Von Vorteil ist auch, dass ein Austausch eines Andrückelementes durch einen Handgriff bzw. werkzeuglos möglich ist.Further, it is advantageous that the endless element is designed in such a way to attach thereto differently shaped pressing elements. Thus, the endless element can in particular be variably equipped with pressure elements, for example, depending on the type of workpieces to be processed. In particular, it is advantageous that the pressure element is releasably attached via a sliding fit on the endless element. A sliding seat allows a particularly simple removal or attachment of the pressing element. Another advantage is that an exchange of a pressure element by a handle or without tools is possible.

Die Erfindung richtet sich außerdem auf eine Bearbeitungsstation zum Bearbeiten eines band- oder plattenförmigen metallischen Werkstücks, welche eine Endbearbeitungseinheit mit einem Endbearbeitungsband zur Bearbeitung des Werkstücks aufweist, wobei erfindungsgemäß eine der Endbearbeitungseinheit vorgeschaltete Vorrichtung vorhanden ist, die gemäß einer der oben genannten Vorrichtungen ausgestaltet ist. Die Grundidee dieser Anordnung besteht darin, dass z.B. vor einem Lamellenschleifband ein kleineres, leicht angetriebenes Schleifband positioniert wird, mit nur partiell angedrückten Bereichen durch die Andrückelemente, die sich in ihrer Position zum Werkstück verändern können. Damit lassen sich Werkstücke in einer Einheit zunächst von groben Graten und dergleichen befreien, bevor die Endbearbeitung durch die Endbearbeitung effektiv erfolgen kann. Ohne die vorgeschaltete Bearbeitungsvorrichtung könnte in einer Einheit eine gewünschte hohe Bearbeitungsqualität insbesondere von Werkstücken mit starken Graten bzw. Materialüberständen nicht erreicht werden.The invention is also directed to a processing station for processing a strip or plate-shaped metallic workpiece, which has a finishing unit with a finishing belt for processing the workpiece, according to the invention there is a device upstream of the finishing unit, which is designed according to one of the above-mentioned devices. The basic idea of this arrangement is that e.g. a smaller, slightly driven sanding belt is positioned in front of a lamellar sanding belt, with only partially pressed areas by the pressing elements, which can change in their position to the workpiece. This allows workpieces in a unit initially free of coarse burrs and the like, before the finishing can be done effectively by the finishing. Without the upstream processing device, a desired high processing quality, in particular of workpieces with strong burrs or material projections, could not be achieved in one unit.

Figurenbeschreibungfigure description

Die Erfindung wird anhand von in den Figuren dargestellten erfindungsgemäßen Ausführungsbeispielen näher erläutert.The invention will be explained in more detail with reference to embodiments of the invention shown in the figures.

Im Einzelnen zeigt:

Figur 1
eine Frontansicht auf einen Teil einer Bearbeitungsstation mit erfindungsgemäßer Bearbeitungsvorrichtung,
Figur 2
ein vergrößertes Detail aus Figur 1,
Figur 3
ein Endloselement der Bearbeitungsvorrichtung gemäß Figur 1 in frontseitiger Einzeldarstellung,
Figur 4
das Endloselement gemäß Figur 3 von oben,
Figur 5
ein Gleitschuh in perspektivischer Ansicht schräg von oben,
Figur 6
eine Aufnahme für den Gleitschuh gemäß Figur 5 in perspektivischer Ansicht schräg von oben und
Figur 7 bis 9
den Gleitschuh und die Aufnahme gemäß Figur 5 und 6 im zusammengesetzten Zustand in einer Ansicht von vorne, von der Seite und von oben.
In detail shows:
FIG. 1
a front view of a part of a processing station with inventive processing device,
FIG. 2
an enlarged detail FIG. 1 .
FIG. 3
an endless element of the processing device according to FIG. 1 in front-side individual representation,
FIG. 4
the endless element according to FIG. 3 from above,
FIG. 5
a sliding shoe in perspective view obliquely from above,
FIG. 6
a recording for the shoe according to FIG. 5 in perspective view obliquely from above and
FIGS. 7 to 9
the shoe and the recording according to FIGS. 5 and 6 in the assembled state in a view from the front, from the side and from above.

In Figur 1 ist eine Vorderansicht eines Teils einer Bearbeitungsstation mit einer erfindungsgemäßen Bearbeitungsvorrichtung 1 mit einem Maschinenkörper 2 und einem Bearbeitungsband 3 gezeigt. Die Bearbeitungsstation ist insbesondere als eine Maschineneinheit ausgebildet. Nicht dargestellt ist eine Transportanordnung zum Vorbeiführen eines zu bearbeitenden flachen Werkstücks W unterhalb des Bearbeitungsbandes 3. Mit der Transportanordnung, die beispielsweise ein angetrieben sich bewegendes Förderband umfasst, kann das Werkstück W quer zu einer parallel zur Bildebene verlaufenden untenliegenden Längskante 4 des Bearbeitungsbandes 3 durch die Bearbeitungsstation bewegt werden.In FIG. 1 is a front view of a part of a processing station with a processing device 1 according to the invention with a machine body 2 and a processing belt 3 shown. The processing station is designed in particular as a machine unit. Not shown is a transport arrangement for passing a flat workpiece W to be machined below the processing belt 3. With the transport arrangement, which includes, for example, a driven moving conveyor belt, the workpiece W transversely to a plane extending parallel to the image plane underlying longitudinal edge 4 of the processing belt 3 through the Processing station to be moved.

Im Maschinenkörper 2 mit Gehäuse ist nicht näher dargestellt eine Endbearbeitungseinheit mit einem Endbearbeitungsband bzw. Lamellenschleifband zur abschließenden Endbearbeitung des Werkstücks W der Bearbeitungsvorrichtung 1 nachgeschaltet vorhanden. Die Bearbeitungsvorrichtung 1 dient in dieser Anordnung demgemäß insbesondere zur Grobbearbeitung des Werkstücks W und ist in Transportrichtung des Werkstücks W der Endbearbeitungseinheit vorgeschaltet.In the machine body 2 with housing is not shown in detail a finishing unit with a finishing belt or lamellar grinding belt for the final finishing of the workpiece W of the processing device 1 downstream available. Accordingly, in this arrangement, the processing apparatus 1 serves, in particular, for the rough machining of the workpiece W and is arranged upstream of the finishing unit in the transport direction of the workpiece W.

Die Bearbeitungsvorrichtung 1 ist im dargestellten Ausführungsbeispiel als Bandschleifmaschine insbesondere zum Entgraten von Schnittkanten und/oder zum Abschleifen von Oberflächen des plattenförmigen und Vertiefungen V aufweisenden Werkstücks W ausgebildet. Das Werkstück W kann beispielsweise ein Metallbauteil sein, welches durch ein Laser- oder Schweißbrennverfahren aus einer Stahlplatte herausgeschnitten wurde.The processing device 1 is formed in the illustrated embodiment as a belt grinding machine in particular for deburring of cutting edges and / or for grinding surfaces of the plate-shaped and recesses V having workpiece W. The workpiece W may be, for example, a metal component which has been cut out of a steel plate by a laser or welding method.

Das Bearbeitungsband 3 ist als Schleifband ausgestaltet und besitzt eine entsprechend ausgestaltete Arbeitsseite 3a beispielsweise mit einer Sandkörnung. Das Bearbeitungsband 3 ist mit seiner Rückseite 3b über zwei sich drehende Trommeln 5 geführt antreibbar, wobei eine der beiden Trommeln 5 über einen nicht dargestellten Antrieb insbesondere mit einem Elektromotor drehangetrieben ist. Im Betrieb wird das Bearbeitungsband 3 umlaufend beispielsweise in Richtung gemäß des Pfeils P1 bzw. entgegen des Uhrzeigersinns angetrieben und linear quer oder schräg am Werkstück W vorbeigeführt.The processing belt 3 is configured as an abrasive belt and has a correspondingly designed working side 3a, for example, with a sand grain. The machining belt 3 can be driven with its rear side 3b via two rotating drums 5, wherein one of the two drums 5 is rotationally driven via a drive, not shown, in particular with an electric motor. In operation, the processing belt 3 is driven circumferentially, for example, in the direction of the arrow P1 or counterclockwise and linearly transversely or obliquely past the workpiece W.

Grundsätzlich kann die Umlaufrichtung des Bearbeitungsbandes 3 auch im Uhrzeigersinn erfolgen. Außerdem kann das Werkstück, welches über die Bearbeitungsvorrichtung 1 von oben bearbeitet wird, durch eine entsprechend unterseitig liegende Bearbeitungsvorrichtung (nicht gezeigt) auch von unten bearbeitet werden.In principle, the direction of rotation of the processing belt 3 can also take place in a clockwise direction. In addition, the workpiece, which is machined from above via the processing device 1, can also be machined from below by a corresponding lower-side processing device (not shown).

Die Umlaufgeschwindigkeit des Bearbeitungsbandes 3 ist insbesondere stufenlos vorgebbar.The rotational speed of the processing belt 3 is in particular infinitely predetermined.

Damit die Arbeitsseite 3a des Bearbeitungsbandes 3 bzw. des Schleifbandes mit einer ausreichend hohen Kraft bzw. in einer geeignet angepassten Ausrichtung gegen das Werkstück W gedrückt wird, ist ein umlaufend angetriebenes Endloselement 6 vorhanden, welches einen Trägerriemen 7 mit daran außenseitig vorhandenen Andrückelementen bzw. Andrückschuhen 8 aufweist. Das Endloselement 6 läuft im Betrieb insbesondere in der gleichen Richtung wie das Bearbeitungsband 3 um, also gemäß Figur 1 im Gegenuhrzeigersinn bzw. in Richtung P2, jedoch langsamer als das Bearbeitungsband 3. Damit wird erreicht, dass im kontinuierlichen Betrieb im Arbeitsbereich nicht immer die gleichen Stellen am Bearbeitungsband 3 druckbeaufschlagt werden und insbesondere über die Lebensdauer der Bearbeitungsvorrichtung 1 die gesamte Arbeitsseite 3a gleichmäßig abgenutzt wird, was vorteilhaft ist.In order for the working side 3a of the processing belt 3 or the grinding belt to be pressed against the workpiece W with a sufficiently high force or in a suitably adapted alignment, a continuously driven endless element 6 is provided existing, which has a support belt 7 with it on the outside existing pressing elements or Andrückschuhen 8. The endless element 6 runs in operation in particular in the same direction as the processing belt 3, ie according to FIG. 1 counterclockwise or in the direction of P2, but slower than the processing belt 3. This ensures that in continuous operation in the work area not always the same places on the processing belt 3 are pressurized and in particular over the life of the processing device 1, the entire working side 3a is evenly worn which is beneficial.

Außerdem wird durch das Bewegen der Andrückschuhe 8 in Richtung der Bewegungsrichtung des Bearbeitungsbandes 3 die Relativbewegung zwischen den Andrückschuhen 8 und der Rückseite 3b des Bearbeitungsbandes 3 vergleichsweise gering gehalten, so dass eine Abnutzung auf der Rückseite 3b des Bearbeitungsbandes 3 minimiert ist, was ebenfalls einem andernfalls vorzeitigen Versagen des Endloselements 6 aufgrund eines Durchscheuerns von einzelnen Stellen entgegenwirkt.In addition, by moving the Andrückschuhe 8 in the direction of movement of the processing belt 3, the relative movement between the Andrückschuhen 8 and the back 3b of the processing belt 3 is kept comparatively low, so that wear on the back 3b of the processing belt 3 is minimized, which also otherwise counteracts premature failure of the endless element 6 due to chafing of individual bodies.

Das Endloselement 6 ist so auf das Bearbeitungsband 3 abgestimmt, dass die Andrückschuhe 8 zumindest in einem Arbeitsbereich A des Bearbeitungsbandes 3 auf die Rückseite 3b des Bearbeitungsbandes 3 drücken und damit die Arbeitsseite 3a gegen das Werkstück W, wodurch eine entsprechende Druck- bzw. Kraftbeaufschlagung zur Werkstückbearbeitung realisiert ist. Die Umlaufgeschwindigkeit des Endloselements 6 ist vorteilhaft etwas geringer als die Umlaufgeschwindigkeit des Bearbeitungsbandes 3, wobei es für eine hohe Bearbeitungsqualität wesentlich ist, dass im Arbeitsbereich A das Endloselement 6 zumindest nahezu parallel zum Bearbeitungsband 3 ausgerichtet ist. Über die Länge des Arbeitsbereichs A ist z.B. über die jeweils entsprechend einstellbare Bandspannung eine vergleichsweise geringe Positionsänderung bzw. winklige Anstellung des Endloselements 6 und des Bearbeitungsbandes 3 bewusst vorgesehen, so dass am Werkstück W nicht nur eine flache Oberseite, sondern auch die Vertiefungen V bzw. Kanten ohne Fehlstellen von der Arbeitsseite 3a abschleifbar sind.The endless element 6 is tuned to the processing belt 3 that press the Andrückschuhe 8 at least in a working area A of the processing belt 3 on the back 3b of the processing belt 3 and thus the working side 3a against the workpiece W, whereby a corresponding pressure or Kraftbeaufschlagung for Workpiece processing is realized. The rotational speed of the endless element 6 is advantageously slightly lower than the rotational speed of the processing belt 3, wherein it is essential for high processing quality that in the working area A, the endless element 6 is aligned at least almost parallel to the processing belt 3. Over the length of the working area A, a comparatively small change in position or angled adjustment of the endless element 6 and the processing belt 3 is deliberately provided, for example via the respectively corresponding belt tension, so that not only a flat top, but also the depressions V or Edges without defects of the Working side 3a are abradable.

Die Fähigkeit der individuellen Anpassung des Bearbeitungsbandes 3 an die Gestalt des Werkstücks, insbesondere die winklige Anstellung der Andrückschuhe 8, wird zudem verstärkt durch die in Umlauf- bzw. Längsrichtung vergleichsweise schmale Längsabmessung 1 der Andrückschuhe 8. Die möglichen winkligen Anstellungen des Andrückschuhs 8 ausgehend von der neutralen Ausrichtung gemäß Figur 2 ist durch die Bewegungspfeile P3 und P4 in Figur 2 angedeutet.The ability of the individual adaptation of the machining belt 3 to the shape of the workpiece, in particular the angular adjustment of Andrückschuhe 8, is also reinforced by the relatively narrow in the circumferential or longitudinal longitudinal dimension 1 of Andrückschuhe 8. The possible angular positions of the Andrückschuhs 8 starting from according to the neutral orientation FIG. 2 is through the movement arrows P3 and P4 in FIG. 2 indicated.

Im gezeigten Ausführungsbeispiel weist der Trägerriemen 7 eine Vielzahl von gleichmäßig zueinander beabstandeten Andrückschuhen 8 auf, welche jeweils die gleiche Längenabmessung 1 aufweisen. Der so jeweils zwischen benachbarten Andrückschuhen 8 vorhandene Zwischenraum mit einer Längenabmessung L ist im gezeigten Ausführungsbeispiel vorteilhafterweise in etwa dreimal so groß, wie die Längsabmessung 1 eines Andrückschuhs 8. Für unterschiedliche Anwendungsfälle können aber auch andere Längenverhältnisse L zu 1 bzw. Längenabmessungen 1 und L vorteilhaft sein. Denkbar ist auch, dass an einem Endloselement nicht sämtliche Andrückschuhe 8 bzw. Zwischenräume die gleiche Länge 1 bzw. L aufweisen, sondern z.B. alle unterschiedlich sind oder alternierend übereinstimmen.In the embodiment shown, the support belt 7 has a plurality of uniformly spaced Andrückschuhen 8, each having the same length dimension 1. In the exemplary embodiment shown, the intermediate space with a length dimension L that is thus present between adjacent pressure shoes 8 is advantageously about three times as large as the longitudinal dimension 1 of a pressure shoe 8. For different applications, however, other aspect ratios L to 1 or lengths 1 and L may also be advantageous be. It is also conceivable that on an endless element not all pressure shoes 8 or intermediate spaces have the same length 1 or L, but e.g. are all different or coincide alternately.

Wie Figur 1 verdeutlicht, ist es außerdem vorteilhaft möglich, anstelle einer gesamtflächigen Andrückfläche auf der Rückseite 3b des Bearbeitungsbandes 3 eine partielle bzw. lückenbehaftete Andrückfläche einzurichten.As FIG. 1 illustrates, it is also advantageously possible, instead of a total surface pressure surface on the back 3b of the processing belt 3 to set up a partial or gap-pressing surface.

So wird eine geringere Antriebsleistung für die Bänder 3, 7 benötigt und es entsteht durch die geringere Reibung weniger Reibungswärme, die sich hauptsächlich im metallischen Werkstück W bemerkbar macht.Thus, a lower drive power for the bands 3, 7 is required and it is due to the lower friction less frictional heat, which is mainly in the metallic workpiece W noticeable.

Somit kann das Werkstück W auch nach intensiver Schleifbearbeitung ohne Weiteres sofort weiter verarbeitet werden, zum Beispiel von einer Person von Hand ohne Schutzmaßnahmen wie Handschuhe ergriffen werden. Eine Abkühlungsphase kann in der Regel entfallen.Thus, even after intensive grinding, the workpiece W can readily be further processed immediately, for example, by a person by hand without Protective measures such as gloves are taken. A cooling phase can be omitted as a rule.

Das Endloselement 6 kann aufgrund des geringen Flächendruckes mittels der Andrückschuhe 8 auf die Rückseite 3b des Bearbeitungsbandes 3 beispielsweise über einen vergleichsweise leistungsschwachen Antriebsmotor (nicht dargestellt) angetrieben werden, welcher eine Antriebsrolle 9, um welches das Endloselement 6 bewegungsgeführt ist, antreibt. Zur Führung und Umlenkung des Trägerriemens 7 sind weitere aber nicht angetriebene Führungsrollen 10, 11 und 12 vorhanden.The endless element 6 can be driven (not shown) due to the low surface pressure by means of Andrückschuhe 8 on the back 3b of the processing belt 3, for example, a relatively low-power drive motor, which drives a drive roller 9, by which the endless element 6 is guided. For guiding and deflecting the support belt 7 more but non-driven guide rollers 10, 11 and 12 are present.

Zur Bereitstellung einer Gegenlagerung bzw. bis zu einem vorgebbaren Maß nachgiebigen Abstützung des Trägerriemens 7 bzw. zur Bereitstellung einer gemäß der Pfeile P6 und P5 (siehe Figur 2) möglichen Positionsanpassung des Trägerriemens 7 ist eine Abstützanordnung 13 mit als Anlageelemente 14 ausgebildeten Stützelementen vorgesehen. Der Trägerriemen 7 wird damit zwischen den Führungsrollen 11 und 12 rückseitig stabilisiert.To provide an abutment or to a predetermined extent yielding support of the support belt 7 or to provide a according to the arrows P6 and P5 (see FIG. 2 ) possible position adjustment of the carrier belt 7 is a support arrangement 13 is provided with support elements designed as bearing elements 14. The carrier belt 7 is thus stabilized on the back between the guide rollers 11 and 12.

Im gezeigten Ausführungsbeispiel sind sechs Anlageelemente 14 vorgesehen und liegen mit einer Unterseite 14a flächig auf der Rückseite 7b des Trägerriemens 7 an. Die Anlageelemente 14 sind jeweils mit einer Federkraft beaufschlagt gelagert bzw. federnd an einer durchgängigen und positionsfesten Aufnahmeschiene 15 aufgenommen. Die federnde Aufnahme ist für jedes Anlageelemente 14 über jeweils zwei Gewindestifte 16 mit Außengewinde realisiert, welche rückseitig am Anlageelement 14 vorhanden sind und durch entsprechende Bohrungen in der Aufnahmeschiene 15 durch diese hindurch greifen. Auf der Oberseite 15a der Aufnahmeschiene 15 stehen die Gewindestifte 16 über, so dass über Gewindemuttern 17, 18 bzw. deren Aufschraubposition der Abstand der Anlageelemente 14 zur Aufnahmeschiene 15 und damit die absolute Position der Anlageelemente 14 definiert ist. Zur Beabstandung der Anlageelemente 14 von der Aufnahmeschiene 15 sind um jeden Gewindestift 16 vorgespannte Spiralfedern 19 zwischen einer Unterseite 15b der Aufnahmeschiene 15 und einer Oberseite der Anlageelemente 14 eingespannt. Unmittelbar oberhalb des Anlageelements 14 ist eine weitere Gewindemutter 20 auf dem Gewindestift 16 aufgeschraubt, welche von der Spiralfeder 19 umgriffen wird.In the embodiment shown, six abutment elements 14 are provided and lie with a bottom surface 14 a flat on the back 7 b of the support belt 7 at. The abutment elements 14 are each loaded with a spring force or resiliently received on a continuous and positionally fixed receiving rail 15. The resilient receptacle is realized for each contact elements 14 via two setscrews 16 each with external thread, which are provided on the rear side of the contact element 14 and engage through corresponding holes in the receiving rail 15 therethrough. On the top 15a of the receiving rail 15 are the threaded pins 16, so that via threaded nuts 17, 18 and their Aufschraubposition the distance of the contact elements 14 to the receiving rail 15 and thus the absolute position of the contact elements 14 is defined. For spacing of the contact elements 14 of the receiving rail 15 are biased about each set screw 16 coil springs 19 between a bottom 15 b of the receiving rail 15 and a top of the Clamping elements 14. Immediately above the contact element 14, a further threaded nut 20 is screwed onto the threaded pin 16, which is encompassed by the coil spring 19.

Wird im Bearbeitungsprozess das Werkstück W unterhalb des Bearbeitungsbandes 3 im Arbeitsbereich A hindurchgeführt, kann gegen die Federkraft der Spiralfeder 19 das Bearbeitungsband 3 nach oben gemäß Pfeil P6 in Figur 2 ausweichen. Kommt ein Bereich der Arbeitsseite 3a, welcher rückseitig von einem Andrückschuh 8 beaufschlagt wird, an eine Vertiefung am Werkstück W, wird aufgrund der gespannten Spiralfeder 19 das Bearbeitungsband in Richtung Pfeil P5 nach unten gedrückt bzw. kann sich winklig gemäß der Pfeile P3 und P4 (siehe Figur 2) anstellen, so dass effektiv und vollständig eine gewünschte Kanten- bzw. Flächenbearbeitung am Werkstück W mittels des vorbeibewegten Bearbeitungsbandes 3 stattfindet.If, in the machining process, the workpiece W is guided below the machining belt 3 in the work area A, the machining belt 3 can move upward against the spring force of the spiral spring 19 as indicated by arrow P6 in FIG FIG. 2 dodge. If a region of the working side 3a, which is acted upon at the rear by a pressure shoe 8, on a depression on the workpiece W, due to the tensioned coil spring 19, the processing belt in the direction of arrow P5 is pressed down or can angularly according to the arrows P3 and P4 ( please refer FIG. 2 ), so that effective and complete, a desired edge or surface processing on the workpiece W takes place by means of the moving past processing belt 3.

Über die Art, Anzahl bzw. Position bzw. die Federkonstante der Spiralfedern 19 kann eine Federwirkung auf das Bearbeitungsband 3 eingestellt bzw. können entsprechend höhere oder niedrigere Andrückkräfte gewählt werden. Auch die Charakteristik der winkligen Anstellung der Andrückschuhe 8 lässt sich über die Spiralfedern 19 mitbeeinflussen. Mit härteren Spiralfedern kann mehr auf eine Oberflächenbearbeitung abgezielt werden, wohingegen mit weicheren Spiralfedern ein Abschleifen von profilierten bzw. konturierten Bereichen des Werkstücks intensiver bzw. verbessert erfolgen kann.About the type, number or position or the spring constant of the coil springs 19, a spring action can be set on the processing belt 3 or can be selected correspondingly higher or lower pressure forces. The characteristic of the angular adjustment of Andrückschuhe 8 can be influenced by the coil springs 19. With harder coil springs, more can be aimed at a surface treatment, whereas with softer coil springs a grinding of profiled or contoured areas of the workpiece can be done more intensively or improved.

Anstelle der gezeigten Spiralfedern 19 können auch andere Federn wie beispielsweise Plattenfedern bzw. andere elastische Elemente eingesetzt werden, z.B. Pufferelemente in der Art von Gummipuffern.Instead of the coil springs 19 shown, it is also possible to use other springs, such as plate springs or other elastic elements, e.g. Buffer elements in the nature of rubber buffers.

Figur 5 und Figur 6 zeigen den Andrückschuh 8 im Detail mit einem Gleitschuh 8a, welcher in einem Gleitschuhträger 8b lösbar aufgenommen ist. Mit dem Gleitschuhträger 8b wird ein Schiebesitz für den Gleitschuh 8a realisiert, wobei der Gleitschuhträger 8b über Bohrungen 21 mit entsprechenden Verbindungsmitteln wie beispielsweise Schrauben 30 (siehe Figur 3) mit dem Trägerriemen 7 verbindbar ist. Die Schraube 30 greift entlang der Achse S (Figur 5 und 6) bis in den Gleitschuh 8a zu dessen Fixierung am Gleitschuhträger 8b hinein. FIG. 5 and FIG. 6 show the Andrückschuh 8 in detail with a sliding shoe 8a, which is removably received in a Gleitschuhträger 8b. With the Gleitschuhträger 8 b a sliding seat for the sliding block 8 a is realized, wherein the Sliding shoe carrier 8b via holes 21 with corresponding connecting means such as screws 30 (see FIG. 3 ) is connectable to the carrier belt 7. The screw 30 engages along the axis S (FIG. FIGS. 5 and 6 ) into the shoe 8a to fix it on the shoe carrier 8b inside.

Für den Schiebesitz sind entsprechende Hinterschneidung 22, 23 seitlich am Gleitschuhträger 8b vorgesehen, welche abgestimmt sind auf entsprechende Stegabschnitte 24, 25 am Gleitschuh 8a. Der Gleitschuh 8a hat insbesondere eine etwas gewölbte bzw. konvexe Oberseite 26, welche eine Schicht betrifft, welche aus einem vergleichsweise reibbeständigen Material besteht. Eine innen anschließende weitere Schicht 27 des Gleitschuhs 8a kann aus einem vergleichsweise nachgiebigen bzw. elastischen Material beispielsweise einem Gummi- oder Schaumstoffmaterial bestehen. Damit kann der Gleitschuh 8a selbst sich federelastisch bzw. nachgiebig verhalten, was ggf. eine noch bessere Anschmiegung des Bearbeitungsbandes 3 am Werkstück W bewirkt. Eine die Stegabschnitte 24, 25 aufweisende unterste Schicht 28 des Gleitschuhs 8a ist aus einem vergleichsweise harten Material. Ebenso der Gleitschuhträger 8b, welcher eine Vertiefung bzw. einen konkaven Abschnitt 29 mittig aufweist.For the sliding seat corresponding undercut 22, 23 are provided laterally on the shoe carrier 8b, which are matched to corresponding web portions 24, 25 on the shoe 8a. The sliding shoe 8a in particular has a slightly curved or convex upper side 26, which relates to a layer which consists of a comparatively friction-resistant material. An inner subsequent further layer 27 of the sliding block 8a may consist of a comparatively resilient or elastic material, for example a rubber or foam material. Thus, the shoe 8a itself behave resiliently or yieldingly, which possibly causes even better Anschmiegung of the machining belt 3 on the workpiece W. A lowermost layer 28 of the sliding shoe 8a having the web portions 24, 25 is made of a comparatively hard material. Likewise, the shoe holder 8b, which has a recess or a concave portion 29 in the middle.

Figur 3 und Figur 4 zeigen das Endloselement 6 in Einzeldarstellung einmal von vorne und einmal von oben, wobei die Anbringung über Anbringschrauben 30 zur Fixierung der Gleitschuhträger 8b am Trägerriemen 7 beispielhaft gezeigt ist. FIG. 3 and FIG. 4 show the endless element 6 in a single view once from the front and once from above, the attachment via attachment screws 30 for fixing the Gleitschuhträger 8b on the support belt 7 is shown as an example.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Bearbeitungsvorrichtungprocessing device
22
Maschinenkörpermachine body
33
Bearbeitungsbandprocessing tape
3a3a
Arbeitsseiteworking side
3b3b
Rückseiteback
44
Längskantelongitudinal edge
55
Trommeldrum
66
Endloselementendless element
77
Trägerriemencarrier belt
7a7a
Vorderseitefront
7b7b
Rückseiteback
88th
Andrückschuhpresser
8a8a
Gleitschuhshoe
8b8b
GleitschuhträgerGleitschuhträger
99
Antriebsrollecapstan
1010
Führungsrolleleadership
1111
Führungsrolleleadership
1212
Führungsrolleleadership
1313
Abstützanordnungsupport arrangement
1414
Anlageelementeconditioning elements
14a14a
Unterseitebottom
1515
Aufnahmeschienereceiving rail
15a15a
Oberseitetop
15b15b
Unterseitebottom
1616
GewindestiftSet screw
17, 1817, 18
Gewindemutterthreaded nut
1919
Spiralfederspiral spring
2020
Gewindemutterthreaded nut
2121
Bohrungdrilling
2222
Hinterschneidungundercut
2323
Hinterschneidungundercut
24, 2524, 25
Stegabschnittweb section
2626
Oberseitetop
2727
Schichtlayer
2828
Schichtlayer
2929
Abschnittsection
3030
Schraubescrew

Claims (11)

  1. Device for processing a belt or plate-like metal workpiece, in particular for deburring cut edges and/or for grinding surfaces of the workpiece, comprising at least one processing unit (1), by means of which a driven, circulating processing belt (3) can be driven at least approximately linearly past the workpiece obliquely or perpendicularly to a feed direction of the workpiece in an operating area of the machining belt (3) and the workpiece can be processed on one operating side (3a) of the processing belt (3), wherein pressure elements (8) provided on a movable support element (7) act on a rear side (3b) of the processing belt (3) in order to influence the contact necessary for processing between the operating side (3a) of the processing belt (3) and the workpiece, wherein a drive arrangement is provided, by means of which the support element (7) can be motor-driven so that the support element (7) moves at least in the operating area of the processing belt (3) essentially parallel to the direction of movement of the processing belt (3), characterised in that the support element (7) is designed as a circulating endless element (6) on which pressure elements (8) are provided such that the pressure elements (8) press on the rear side (3b) of the processing belt (3) intermittently, wherein the pressure elements (8) on a front side (7a) of the endless element (6) aligned relative to the proceeding belt (3) comprise at least one detachable pressure element (8a).
  2. Device according to claim 1, characterised in that a support arrangement (13) operating in the working area of the processing belt (3) is provided.
  3. Device according to claim 2, characterised in that the support arrangement (13) comprises a bearing section for supporting the endless element (6), such that the endless element (6) can deflect in a restorable manner in a direction away from the workpiece.
  4. Device according to claim 3, characterised in that the bearing section for supporting the endless element (6) comprises a plurality of support elements (14) which are positioned alongside one another in the direction of the longitudinal extent of the endless element (6) and are movable with respect to a fixed part (15) by means of prestressed springs (19).
  5. Device according to any of the preceding claims 3 and 4, characterised in that the bearing section bears flat over a width on a rear side (7b) of the endless element (6).
  6. Device according to any of the preceding claims, characterised in that the pressure element (8a) comprises elastically yielding sections (27) which, when pressing against the rear side (3b) of the processing belt (3), allow the pressure element (8a) to yield elastically.
  7. Device according to any of the preceding claims, characterised in that the drive arrangement is configured to drive the endless element (6) and the processing belt (3) at different speeds in the same direction of movement.
  8. Device according to any of the preceding claims, characterised in that the endless element (6) is designed such that in the installed state of the endless element (6) at least individual pressure elements (8a) arranged on the endless element (6) can be removed and/or replaced.
  9. Device according to any of the preceding claims, characterised in that the endless element (6) is configured to attach differently designed pressure elements thereto.
  10. Device according to any of the preceding claims, characterised in that the pressure element (8a) is attached in a detachable manner to the endless element (6) via a sliding fit.
  11. Processing station for processing a belt or plate-like metal workpiece, which comprises a finishing unit having a finishing belt for processing the workpiece, characterised in that a device according to any of the preceding claims is provided upstream of the finishing unit.
EP10784702.2A 2009-11-27 2010-11-23 Machining station and device for machining a workpiece Active EP2504125B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009055974A DE102009055974A1 (en) 2009-11-27 2009-11-27 Processing station and device for processing a workpiece
PCT/EP2010/007078 WO2011063926A1 (en) 2009-11-27 2010-11-23 Machining station and apparatus for machining a workpiece

Publications (2)

Publication Number Publication Date
EP2504125A1 EP2504125A1 (en) 2012-10-03
EP2504125B1 true EP2504125B1 (en) 2017-09-13

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Country Status (10)

Country Link
US (1) US8574036B2 (en)
EP (1) EP2504125B1 (en)
JP (1) JP2013512113A (en)
CN (1) CN102666012B (en)
BR (1) BR112012012667A2 (en)
CA (1) CA2780952C (en)
DE (2) DE202009019024U1 (en)
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DE102015110115A1 (en) * 2015-06-24 2016-12-29 Georg Weber Device for processing a workpiece
US20190126426A1 (en) * 2017-11-01 2019-05-02 Wen-Chi Chang Pressing device for sanding machines
IT201800000625A1 (en) * 2018-01-09 2019-07-09 Costa Levigatrici Spa SANDING MACHINE WITH CROSS BELT
DE102021103966A1 (en) * 2021-02-19 2022-08-25 Georg Weber Grinding device for creating surface structures
US20230173635A1 (en) * 2021-12-04 2023-06-08 Bor-Yann Chuang Oscillating device of belt sander
CN114473769B (en) * 2022-01-17 2022-11-18 合肥工业大学 Automatic device for separating attachments on surfaces of positive and negative pole pieces of waste power lithium batteries
CN114603444B (en) * 2022-04-06 2023-06-27 南京尚科得科技发展有限公司 Toilet bowl upper cover plate polishing workbench

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Publication number Priority date Publication date Assignee Title
DE102020120968A1 (en) 2020-08-10 2022-02-10 Georg Weber Grinding device for creating surface structures
WO2022034026A1 (en) 2020-08-10 2022-02-17 Georg Weber Belt grinder for creating surface structures

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US20120295523A1 (en) 2012-11-22
BR112012012667A2 (en) 2016-07-12
JP2013512113A (en) 2013-04-11
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DE102009055974A1 (en) 2011-06-01
US8574036B2 (en) 2013-11-05
PT2504125T (en) 2017-12-20
CA2780952C (en) 2018-02-27
DE202009019024U1 (en) 2015-09-21
WO2011063926A1 (en) 2011-06-03
CA2780952A1 (en) 2011-06-03
EP2504125A1 (en) 2012-10-03
DK2504125T3 (en) 2017-12-11
CN102666012A (en) 2012-09-12

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