EP1716972B1 - Pressure shoe layer - Google Patents
Pressure shoe layer Download PDFInfo
- Publication number
- EP1716972B1 EP1716972B1 EP05103518A EP05103518A EP1716972B1 EP 1716972 B1 EP1716972 B1 EP 1716972B1 EP 05103518 A EP05103518 A EP 05103518A EP 05103518 A EP05103518 A EP 05103518A EP 1716972 B1 EP1716972 B1 EP 1716972B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sanding
- sanding pad
- belt
- covering
- pad covering
- 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.)
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- 239000000463 material Substances 0.000 claims abstract description 46
- 229920000742 Cotton Polymers 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims abstract description 7
- 229920002678 cellulose Polymers 0.000 claims abstract description 6
- 239000001913 cellulose Substances 0.000 claims abstract description 6
- 239000000835 fiber Substances 0.000 claims abstract description 4
- 239000007769 metal material Substances 0.000 claims description 5
- 239000002861 polymer material Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000011094 fiberboard Substances 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 27
- 239000012791 sliding layer Substances 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 229910002804 graphite Inorganic materials 0.000 description 5
- 239000010439 graphite Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000002657 fibrous material Substances 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 239000012876 carrier material Substances 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011093 chipboard Substances 0.000 description 2
- -1 felt Substances 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/04—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces
- B24B21/06—Machines 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
- B24B21/08—Pressure shoes; Pressure members, e.g. backing belts
Definitions
- the invention relates to a sanding pad, for use with a sanding shoe for pressing abrasive belts on workpieces in wide-belt sanding machines, which has at least one flat, padded and slippery contact surface, and a sanding pad for receiving a Schleifschuhbelags.
- belt sanding machines For grinding large-area workpieces, in particular of sheets of raw material, such as chipboard, MDF, HDF and OSB boards belt sanding machines are used in the industry. In these belt sanding machines, a wide abrasive belt is driven by rollers and pressed against the surface of the workpiece by a sanding shoe.
- a sanding shoe has to meet several requirements.
- the friction between the sanding belt and the sanding pad must be as low as possible. Therefore, the sanding pad has a sanding pad which in operation is pressed against the sanding belt and therefore has a lubricious surface.
- the heat generated by the Anpressreibung should not affect the Schleifschuhbelag, therefore, a heat-resistant material is usually used.
- the sanding pad is equipped with a padding of an elastic material, such as felt, foam or sponge rubber.
- sanding shoes are known in which a sanding pad is provided with a multi-layer sanding pad. Directly on the sanding pad, for example, there is an anti-slip coating, thereon an elastic padding material and finally a sliding coating is provided which contains, for example, graphite particles; The sliding lining is stretched over the elastic padding material and fastened laterally to the sanding pad with a clamping strip.
- a sanding pad in which a tubular pad, elastic strip and cushioning mat form a printing element unit that can be slid into the sanding pad.
- a sliding lining is stretched over the open side of the sanding pad. The reassembly of the sanding pad is facilitated by the sliding pressure element unit, but remains complex because of the strained sliding coating.
- the sanding pad has here a metallic support rail on which a sliding coating and a cushion layer is attached.
- the sanding pad can be pushed with the support rail in a corresponding recess of the sanding pad.
- the used sanding pad After replacement, however, the used sanding pad must be separated from the support rail and the rail must be newly bonded with a padding layer and a sliding layer.
- the carrier rail is very good heat conducting, which leads to a rapid heating of the sanding pad.
- the object of the invention is to avoid the disadvantages of the known, in particular so to create a sanding pad, which is simple in construction, based on inexpensive starting materials, inexpensive to manufacture and dispose of without effort.
- the function in the wide-belt sanding machine is to be improved and the manageability for the personnel when replacing, reassembling and disposing should be facilitated.
- the object of the invention is achieved by a sanding shoe lining according to claim 1.
- Non-metallic materials are usually poor heat conductors, so that the frictional heat generated during the grinding process is not absorbed by the Schleischuhbelag to a significant extent and may affect this, but is dissipated by the moving abrasive belt.
- Non-metallic materials are usually based on inexpensive starting materials, are therefore inexpensive and require no further consideration in the disposal, since a recycling is not necessary.
- the Schleifschuhbelag may have except the lining carrier made of non-metallic material fasteners made of metal, which can be easily removed from the sanding pad for disposal.
- the lining carrier serves as a support element for the padding and the sliding surface.
- the cushioning material and / or the sliding surface may be glued to the lining carrier, welded, fixed with fastening elements or applied as an adhesive covering.
- the lining carrier ensures that the elastic padding material and / or the sliding layer are not brought by the passing band from the intended position and establishes a connection of the Schleifschuhbelags to the sanding pad.
- the sanding pad can be glued to the sanding shoe, clamped, fixed with or without additional fasteners or applied as an adhesive coating.
- the lining carrier can be pushed into a recess of the grinding shoe and fastened in a form-fitting manner.
- the lining carrier contains a cellulose material, in particular a wood material and / or a cotton material.
- a cellulose material in particular a wood material and / or a cotton material.
- other cellulosic materials are usable.
- the lining carrier is based on a natural base material, then it and, depending on the choice of upholstery or sliding material, the entire sanding pad must be disposed of without effort and thus used as a disposable sanding pad.
- Cellulose materials are inexpensive, can be processed easily, they are variable in the shaping and it can be achieved a high dimensional stability, which make the cellulose materials suitable as a carrier material.
- the cellulose materials have a low density compared to similarly durable carrier materials and thus contribute to the fact that sanding pad coverings of low weight can be produced.
- a low weight facilitates assembly and transport.
- the wood-based material and / or the cotton material is preferably a felt, an MDF, an HDF or a fibrous material, that is, open-minded cotton.
- the selection shows the great variability of the materials in terms of their strength or elasticity.
- the materials can be present in combination or alone.
- the sanding shoe lining has at least one abutment surface for absorbing transverse forces, wherein the at least one abutment surface encloses an angle parallel to the contact surface with a plane.
- the stop surface can on the sanding pad or on abut a fastener to connect the sanding pad and sanding pad.
- the angle between abutment surface and contact surface is less than 180 ° and greater than 90 °, preferably it is about 115 ° to 130 °.
- the abutment surface absorbs the lateral forces acting on the sanding shoe lining by the running sanding belt and passes them on to the sanding pad. The lateral forces are distributed better the larger the stop surface. The abutment surfaces simultaneously cause a positive connection between the sanding shoe lining and the sanding shoe.
- the sanding shoe lining has stop surfaces on the end facing the running direction of the sanding belt and facing away from the running direction of the sanding belt.
- the abutment surfaces at one end of the sanding pad can be an area in a plane or composite abutment surfaces, such as a T-profile. However, this does not distribute the lateral forces very evenly on the stop. It can come at the transitions between the surfaces to undesirable voltages.
- the cross section of the Schleifschuhbelag s on a dovetail-shaped profile. This directs the forces evenly into the sanding shoe.
- the sanding shoe lining comprises a lining carrier whose cross-section has a dovetail-shaped profile.
- the stop surface is largely or completely formed by the lining carrier.
- lining carrier made of dimensionally stable material are able to absorb the forces without internal stresses.
- the stop surface of the dovetailed profile encloses an angle of 110-130 degrees, preferably 120 degrees, with the plane of the contact surface.
- the profile on the inside of the dovetail-like projections on a 60 degree angle is a feature that is selected from the group consisting of the dovetailed profile.
- the sanding pad as an inlet surface for the sanding belt on at least one inclined portion in a direction away from the sanding pad surface, in which the surface is not parallel to the contact surface, but with this encloses an angle.
- the bevel area may be formed as a flat surface, but it may also have a rounded or faceted surface.
- the grinding shoe has a sufficiently large contact surface, which is positioned according to the surface of the workpiece or the grinding table.
- the surface of the sanding pad is particularly exposed to the forces generated by the moving sanding belt. Since the sanding pad presses the sanding belt against the workpiece, the contact surface and the sanding belt enclose an angle in the edge regions. The load on the sanding pad by the sanding belt can be reduced if the shape of the sanding pad is adapted to the entry angle.
- the inclined region is formed as a discharge ramp for pressing an abrasive belt running away from a workpiece.
- the sanding pad has an outlet and an inlet slope.
- the design of the tapered region depends on the arrangement of the wide-belt sanding machine, on the spacing of the drive rollers, the elasticity of the sanding belts and others.
- the at least one bevel area encloses an angle of 4-10 degrees with the contact surface or the grinding plane.
- the contact pressure in the edge areas can be adapted particularly well to the requirements in individual cases, if the lining carrier consists of dimensionally stable material and is even beveled in the edge region.
- a padding layer is provided on the lining carrier which, at least in the region of the contact surface, is provided with a lubricious material is.
- the lubricious material is also provided in the edge regions, so that the entire contact surface to the grinding belt has sufficient lubricity.
- the layered design can be used for the cushion layer and the lubricious material covering layers, which have already proven in abrasive shoes, which are known from the prior art.
- the sanding pad is provided with a cushioning material, which at least on a part of its thickness with a sliding material, preferably graphite or a graphite compound, interspersed.
- the thickness of the cushioning material denotes the extent perpendicular to the contact surface.
- Padding material usually has an open-pore structure with a large surface area at which the sliding material can settle.
- the padding material can also have components that guarantee sufficient lubricity. In both cases, there is a padding material that provides a lubricious contact surface.
- the cushioning material is preferably a foam, in particular a PU foam, and / or a felt.
- Foams and felts have proven to be upholstery materials and can be combined well with lubricants.
- a sliding material which has elastic properties by means of suitable additives or carrier materials.
- the object of the inventive task is further solved by a sanding pad according to claim 11.
- Sanding pad and sanding pad allow a short changeover time and easy interchangeability.
- the inventive abrasive shoe absorbs the forces occurring over the stop surfaces in the recesses, that is, the forces are transmitted to the body of the sanding pad and not on any retaining elements, which gives the entire sanding shoe stability.
- the grinding shoe has a recess with a base surface, which preferably runs parallel to the contact surface or contact surface and against which the sanding shoe lining rests.
- FIG. 1 shows a schematic sectional view of a belt grinding machine 1 with a sanding pad 2 in section.
- a workpiece 3 is conveyed on a grinding table 4 under a rotating grinding belt 5.
- the grinding belt 5 is driven by three drive rollers 6 in a running direction 7 and pressed by the grinding shoe 2 against the workpiece.
- FIG. 2 shows the sanding pad 2 with a carrier 8 and a Schleifschuhbelag 101.
- the Schleifschuhbelag 101 has a lining carrier 111 made of MDF, on which a padding layer 112 is glued. On the cushion layer 112, a sliding layer 113 is glued.
- a carrier 8 is provided with recesses 9 for attachment to the belt grinding machine and recesses 10, in which the lining carrier 111 of the Schleifschuhbelags 101 can be inserted.
- the cushioning layer 112 is provided only in the region of the contact surface 114.
- the lining carrier 111 is covered only by the sliding layer 113.
- FIG. 3 shows a schematic side view of a second embodiment of a Schleifschuhbelag 201, which also consists of layers of a lining carrier 211 with dovetail profile 217, a cushion layer 212 and a sliding layer 213.
- the padding layer 212 is bevelled on both sides and forms an inlet bevel 218 and an outlet bevel 219.
- FIG. 4 shows a schematic representation of another embodiment of a Schleifschuhbelag 301, which also has a lining carrier 311 with dovetail profile 317, a cushion layer 312 and a sliding layer 313.
- the cushioning layer 312 and the sliding layer 313 cover the inlet bevel 318 formed on the lining carrier 311 and the corresponding outlet slope 319.
- the lining carrier 311 has stop surfaces 320 for absorbing transverse forces.
- the lining carrier 311 is made of an MDF board.
- the dovetail-shaped profile 317, the inlet slope 318 and the outlet slope 319 are milled.
- FIG. 5 shows a schematic sectional view of a fourth example of a Schleifschuhbelag 401, the layers of a consisting of HDF lining carrier 411 dovetailed Profile 417, a cushion layer 412 and a sliding layer 413 is.
- FIG. 6 shows a schematic sectional view of a fifth example of a Schleifschuhbelag 701th
- the bevel regions 722 enclose an angle A of preferably 6 degrees with the swept plane 723.
- the stop surfaces 720 close with the contact surface 714 an angle B of preferably 120 degrees.
- FIGS. 7a and 7b show schematic sectional views of two further examples of Schleifschuhbeläge 801a, 801b.
- pad backing 811a has a rounded abutment surface 820a and a rounded run-off slope 819a.
- the recess 810a in the carrier 808a has a corresponding shape.
- the backing 811b has a first beveled abutment surface 820b and a second abutment surface 820b 'in the direction of travel 807 of the abrasive belt, not shown, which transfers the force transmitted by the abrasive belt in the direction of travel 807b to the backing 808b.
- a non-beveled abutment surface 820b " On the side 827 facing away from the running direction 807b, a non-beveled abutment surface 820b ", to which the sanding shoe lining 801b is fastened by means of a connecting element 828 to the support 808b.
- MDF or HDF or chipboard are particularly suitable as wood-based material.
- MDF Medium Density Fiber Plates
- a density of 750 to 950 kg / m 3 and a UF or MUF bond are particularly suitable.
- These panels are available in standardized DIN 622 part 5 design from manufacturers such as Kronospan, CH-Menznau, or Kaindl, AT-Salzburg, under the name Standard MDF (eg Flooring).
- MDF boards can preferably be used in a thickness of 3 to 6 mm as a lining carrier. Thicknesses of 4.4 to 5 mm are particularly suitable.
- Fiber material so in open sulfuric acid open cotton fibers are well suited as a material.
- Fiber material is available under the name Vulkanfiber or Dynos-Fiber at Disröder, D-Wuppertal or Troplast AG, D-Troisdorf. Fiber material can be used to advantage in thicknesses of 0.38 mm to 2.0 mm.
- plastics are suitable as Materila for the lining carrier.
- thermoplastics such as PES, PET, PA, ABS, all in filled and reinforced form.
- thermosets such as Epoxies, amino resins or phenolic resins.
- epoxy resins such as Epoxies, amino resins or phenolic resins.
- padding material for example, felt pads in a thickness of 3 to 4 mm, preferably from 3 to 3.5 mm.
- the felt preferably has a volume weight of about 0.2 to 0.7 g / cm 3 . It is available, for example, under the name wool felt from VFG, D-Giengen; the felt can be glued to the lining carrier eg by means of PU glue.
- FIG. 8a Shown schematically is a cushioning layer 912 coated with a sliding layer 929.
- the felt which serves as a cushioning layer, lubricatable, it can be filled, for example, with a graphite binder mixture at least on the contact surface in such a way that the contact surface has sliding properties.
- the graphite material can be obtained from Graphit Kropfmühl AG, D-Hauzenberg. When put into the felt together with a binder such as latex, acrylate or PUR, the felt is sufficiently filled.
- a fleece can be used for this application. Needle nonwovens such as those produced by sia Fibral or chemically bonded nonwovens can be produced, for example, by Resintex, IT-Milan.
- the lubricant e.g. Graphite with a binder, e.g. a liquid polyurethane adhesive or a latex or acrylate adhesive and apply this layer directly on the cushion layer (for example, a felt layer or a foam layer).
- a binder e.g. a liquid polyurethane adhesive or a latex or acrylate adhesive
- the invention proposes accordingly, instead of a separate textile carrier layer directly to coat the pad layer with lubricant.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
Description
Die Erfindung betrifft einen Schleifschuhbelag, zur Verwendung mit einem Schleifschuh zum Anpressen von Schleifbändern an Werkstücke in Breitbandschleifmaschinen, der mindestens eine ebene, gepolsterte und gleitfähige Anpressfläche aufweist, sowie einen Schleifschuh zur Aufnahme eines Schleifschuhbelags .The invention relates to a sanding pad, for use with a sanding shoe for pressing abrasive belts on workpieces in wide-belt sanding machines, which has at least one flat, padded and slippery contact surface, and a sanding pad for receiving a Schleifschuhbelags.
Zum Schleifen von grossflächigen Werkstücken, insbesondere von Platten aus Rohwerkstoff, wie Spanplatten, MDF, HDF und OSB-Platten werden in der Industrie Bandschleifmaschinen verwendet. In diesen Bandschleifmaschinen wird ein breites Schleifband durch Walzen angetrieben, und mittels eins Schleifschuhs gegen die Oberfläche des Werkstücks gedrückt wird.For grinding large-area workpieces, in particular of sheets of raw material, such as chipboard, MDF, HDF and OSB boards belt sanding machines are used in the industry. In these belt sanding machines, a wide abrasive belt is driven by rollers and pressed against the surface of the workpiece by a sanding shoe.
Ein Schleifschuh muss mehreren Anforderungen genügen. Zum einen muss die Reibung zwischen Schleifband und Schleifschuh möglichst gering sein. Daher weist der Schleifschuh einen Schleifschuhbelag auf, der im Betrieb gegen das Schleifband gepresst wird und deshalb eine gleitfähige Oberfläche besitzt. Die durch die Anpressreibung entstehende Wärme soll den Schleifschuhbelag nicht beeinträchtigen, daher wird in der Regel ein wärmefestes Material verwendet.A sanding shoe has to meet several requirements. On the one hand, the friction between the sanding belt and the sanding pad must be as low as possible. Therefore, the sanding pad has a sanding pad which in operation is pressed against the sanding belt and therefore has a lubricious surface. The heat generated by the Anpressreibung should not affect the Schleifschuhbelag, therefore, a heat-resistant material is usually used.
Zum anderen soll ein über die Fläche gleichmässiger Andruck des Schleifschuhs gewährleistet sein, auch wenn das Werkstück leichte Erhebungen aufweist, Schmutzpartikel zwischen Schleifband und Werkstückgelangen gelangen oder Unebenheiten im Schleifband auftreten.On the other hand, even over the surface even pressure of the sanding pad should be ensured, even if the workpiece has slight elevations, get dirt particles between the grinding belt and Werkstückgelangen or unevenness in the sanding belt occur.
In der Regel ist der Schleifschuhbelag mit einer Polsterung aus einem elastischen Material, wie Filz, Schaumstoff oder Moosgummi ausgestattet.In general, the sanding pad is equipped with a padding of an elastic material, such as felt, foam or sponge rubber.
Aus dem Stand der Technik sind Schleifschuhe bekannt, in denen ein Schleifschuh mit einem mehrlagigen Schleifschuhbelag versehen ist. Direkt auf dem Schleifschuh befindet sich beispielsweise ein Antirutschbelag, darauf ein elastisches Polstermaterial und abschliessend ist ein Gleitbelag vorgesehen, der beispielsweise Graphitteilchen enthält; der Gleitbelag ist über das elastische Polstermaterial gespannt und mit einer Klemmleiste seitlich am Schleifschuh befestigt.From the prior art sanding shoes are known in which a sanding pad is provided with a multi-layer sanding pad. Directly on the sanding pad, for example, there is an anti-slip coating, thereon an elastic padding material and finally a sliding coating is provided which contains, for example, graphite particles; The sliding lining is stretched over the elastic padding material and fastened laterally to the sanding pad with a clamping strip.
Die Bestückung eines derartigen Schleifschuhs ist zeitraubend und erfordert eine hohe handwerkliche Fähigkeit. Da für eine Neubestückung der gesamte Schleifschuh demontiert werden muss, erfolgt dieser Prozess in der Regel häufig pro Schicht und unabhängig von Verschleiss.The assembly of such a sanding shoe is time consuming and requires a high level of craftsmanship. Since the entire sanding shoe has to be dismantled for a new assembly, this process usually takes place frequently per shift and independently of wear.
Insgesamt führt die Verwendung derartiger Schleifschuhe zu hohen Wartungskosten.Overall, the use of such sanding shoes leads to high maintenance costs.
Aus
Eine andere Variante eines Schleifschuhs ist in
Nach dem Austausch muss aber der verbrauchte Schleifschuhbelag von der Trägerschiene getrennt werden und die Schiene muss neu mit einer Polsterschicht und einer Gleitschicht beklebt werden.After replacement, however, the used sanding pad must be separated from the support rail and the rail must be newly bonded with a padding layer and a sliding layer.
Ausserdem ist die Trägerschiene sehr gut wärmeleitend, was zu einer schnellen Erhitzung des Schleifschuhs führt.In addition, the carrier rail is very good heat conducting, which leads to a rapid heating of the sanding pad.
Aufgabe der Erfindung ist es, die Nachteile des Bekannten zu vermeiden, insbesondere also einen Schleifschuhbelag zu schaffen, der einfach aufgebaut ist, der auf kostengünstigen Ausgangsmaterialien basiert, preiswert herzustellen und ohne Aufwand zu entsorgen ist. Gleichzeitig soll die Funktion in der Breitbandschleifmaschine verbessert werden und die Handhabbarkeit für das Personal beim Austauschen, Neubestücken und Entsorgen soll erleichtert werden.The object of the invention is to avoid the disadvantages of the known, in particular so to create a sanding pad, which is simple in construction, based on inexpensive starting materials, inexpensive to manufacture and dispose of without effort. At the same time, the function in the wide-belt sanding machine is to be improved and the manageability for the personnel when replacing, reassembling and disposing should be facilitated.
Überraschend hat sich gezeigt, dass ein Belagträger aus nichtmetallischem Material mit ausreichender Festigkeit und besserer Funktion bereit gestellt werden kann.Surprisingly, it has been shown that a lining carrier made of non-metallic material with sufficient strength and better function can be provided.
Die erfindungsgemässe Aufgabe wird gelöst durch einen Schleifschuhbelag gemäß Anspruch 1.The object of the invention is achieved by a sanding shoe lining according to
Nichtmetallische Materialien sind in der Regel schlechte Wärmeleiter, sodass die beim Schleifprozess entstehende Reibungswärme nicht in wesentlichem Ausmass von dem Schleischuhbelag aufgenommen wird und diesen womöglich beeinträchtigt, sondern durch das sich bewegende Schleifband abgeführt wird.Non-metallic materials are usually poor heat conductors, so that the frictional heat generated during the grinding process is not absorbed by the Schleischuhbelag to a significant extent and may affect this, but is dissipated by the moving abrasive belt.
Nichtmetallische Materialien basieren in der Regel auf preiswerten Ausgangsstoffen, sind daher kostengünstig und benötigen keine weitere Beachtung bei der Entsorgung, da eine Wiederverwertung nicht notwendig ist.Non-metallic materials are usually based on inexpensive starting materials, are therefore inexpensive and require no further consideration in the disposal, since a recycling is not necessary.
Der Schleifschuhbelag kann ausser dem Belagträger aus nichtmetallischem Material Befestigungselemente aus Metall aufweisen, die sich für eine Entsorgung leicht von dem Schleifschuhbelag entfernen lassen.The Schleifschuhbelag may have except the lining carrier made of non-metallic material fasteners made of metal, which can be easily removed from the sanding pad for disposal.
Der Belagträger dient als Auflageelement für die Polsterung und die Gleitfläche. Das Polstermaterial und/oder die Gleitfläche kann auf dem Belagträger festgeklebt, verschweisst, mit Befestigungselementen fixiert sein oder als haftender Belag aufgetragen sein. Vorzugsweise besteht eine flächige Verbindung, die den durch das Schleifband auftretenden Scherkräften standhält.The lining carrier serves as a support element for the padding and the sliding surface. The cushioning material and / or the sliding surface may be glued to the lining carrier, welded, fixed with fastening elements or applied as an adhesive covering. Preferably, there is a surface connection, which withstands the shear forces occurring through the abrasive belt.
Der Belagträger sorgt dafür, dass das elastische Polstermaterial und/oder die Gleitschicht nicht von dem vorbeilaufenden Band aus der vorgesehenen Position gebracht werden und stellt eine Verbindung des Schleifschuhbelags zum Schleifschuh her.The lining carrier ensures that the elastic padding material and / or the sliding layer are not brought by the passing band from the intended position and establishes a connection of the Schleifschuhbelags to the sanding pad.
Der Schleifschuhbelag kann auf den Schleifschuh geklebt, gespannt, mit oder ohne zusätzliche Befestigungsmittel fixiert werden oder als haftender Belag aufgetragen sein. Erfindungsgemäß ist der Belagträger in eine Ausnehmung des Schleifschuhs schiebbar und formschlüssig befestigbar.The sanding pad can be glued to the sanding shoe, clamped, fixed with or without additional fasteners or applied as an adhesive coating. According to the invention, the lining carrier can be pushed into a recess of the grinding shoe and fastened in a form-fitting manner.
In einer vorteilhaften Ausführung der Erfindung enthält der Belagträger einen Zellulosewerkstoff, insbesondere einem Holzwerkstoff und/oder einem Baumwollwerkstoff. Ausserdem sind andere Zellulosewerkstoffe verwendbar.In an advantageous embodiment of the invention, the lining carrier contains a cellulose material, in particular a wood material and / or a cotton material. In addition, other cellulosic materials are usable.
Wenn der Belagträger auf einem natürlichen Grundstoff basiert, so ist er und, je nach Wahl des Polster- bzw. Gleitmaterials, der gesamte Schleifschuhbelag ohne Aufwand zu entsorgen und somit als Einwegschleifschuhbelag zu verwenden.If the lining carrier is based on a natural base material, then it and, depending on the choice of upholstery or sliding material, the entire sanding pad must be disposed of without effort and thus used as a disposable sanding pad.
Zellulosewerkstoffe sind kostengünstig, lassen sich leicht verarbeiten, sie sind variabel bei der Formgebung und es kann eine hohe Formstabilität erzielt werden, welche die Zellulosewerkstoffe als Trägermaterial geeignet machen. Dabei haben die Zellulosewerkstoffe eine verglichen mit ähnlich haltbaren Trägermaterialien kleine Dichte und tragen somit dazu bei, dass Schleifschuhbeläge von geringem Gewicht herstellbar sind. Ein geringes Gewicht erleichtert die Montage und den Transport.Cellulose materials are inexpensive, can be processed easily, they are variable in the shaping and it can be achieved a high dimensional stability, which make the cellulose materials suitable as a carrier material. In this case, the cellulose materials have a low density compared to similarly durable carrier materials and thus contribute to the fact that sanding pad coverings of low weight can be produced. A low weight facilitates assembly and transport.
Bevorzugt handelt es sich bei dem Holzwerkstoff und/oder dem Baumwollwerkstoff um einen Filz, ein MDF, ein HDF oder um ein Fibermaterial, das heisst, aufgeschlossene Baumwolle. Die Auswahl zeigt die grosse Variabilität der Materialien hinsichtlich ihrer Festigkeit oder Elastizität. Die Werkstoffe können in Kombination oder jeweils allein vorliegen.The wood-based material and / or the cotton material is preferably a felt, an MDF, an HDF or a fibrous material, that is, open-minded cotton. The selection shows the great variability of the materials in terms of their strength or elasticity. The materials can be present in combination or alone.
Erfindungsgemäß weist der Schleifschuhbelag mindestens eine Anschlagfläche zur Aufnahme von Querkräften auf, wobei die mindestens eine Anschlagfläche mit einer Ebene parallel zu der Anpressfläche einen Winkel einschliesst. Die Anschlagfläche kann an dem Schleifschuh oder an einem Befestigungselement zur Verbindung von Schleifschuhbelag und Schleifschuh anliegen.According to the invention, the sanding shoe lining has at least one abutment surface for absorbing transverse forces, wherein the at least one abutment surface encloses an angle parallel to the contact surface with a plane. The stop surface can on the sanding pad or on abut a fastener to connect the sanding pad and sanding pad.
Der Winkel zwischen Anschlagfläche und Anpressfläche ist kleiner als 180° und grösser als 90°, vorzugsweise beträgt er etwa 115° bis 130°.The angle between abutment surface and contact surface is less than 180 ° and greater than 90 °, preferably it is about 115 ° to 130 °.
Je weiter der Winkel von 90 Grad abweicht, desto grösser ist die Anschlagfläche bei gegebener Dicke des Schleifschuhbelags, das heisst bei gegebener Ausdehnung senkrecht zu der Anpressfläche.The further the angle deviates from 90 degrees, the greater is the stop surface for a given thickness of the Schleifschuhbelags, that is at a given extent perpendicular to the contact surface.
Die Anschlagfläche nimmt die Querkräfte auf, die durch das laufende Schleifband auf den Schleifschuhbelag wirken und gibt sie an den Schleifschuh weiter. Die Querkräfte werden besser verteilt je grösser die Anschlagfläche ist. Die Anschlagflächen bewirken gleichzeitig Formschluss zwischen dem Schleifschuhbelag und dem Schleifschuh.The abutment surface absorbs the lateral forces acting on the sanding shoe lining by the running sanding belt and passes them on to the sanding pad. The lateral forces are distributed better the larger the stop surface. The abutment surfaces simultaneously cause a positive connection between the sanding shoe lining and the sanding shoe.
Erfindungsgemäß weist der Schleifschuhbelag Anschlagflächen an dem der Laufrichtung des Schleifbandes zugewandten und dem der Laufrichtung des Schleifbandes abgewandten Ende auf.According to the invention, the sanding shoe lining has stop surfaces on the end facing the running direction of the sanding belt and facing away from the running direction of the sanding belt.
Bei den Anschlagflächen an einem Ende des Schleifschuhbelags kann es sich um eine Fläche in einer Ebene handeln oder um zusammengesetzte Anschlagflächen, wie um ein T-Profil. Dieses verteilt jedoch die Querkräfte nicht sehr gleichmässig auf den Anschlag. Es kann an den Übergängen zwischen den Flächen zu unerwünschten Spannungen kommen.The abutment surfaces at one end of the sanding pad can be an area in a plane or composite abutment surfaces, such as a T-profile. However, this does not distribute the lateral forces very evenly on the stop. It can come at the transitions between the surfaces to undesirable voltages.
Vorzugsweise weist der Querschnitt des Schleifschuhbelags ein schwalbenschwanzförmiges Profil auf. Dieses leitet die Kräfte gleichmässig in den Schleifschuh.Preferably, the cross section of the Schleifschuhbelags on a dovetail-shaped profile. This directs the forces evenly into the sanding shoe.
Scherspannungen an Materialübergängen können vermieden werden, wenn der Schleifschuhbelag einen Belagträger umfasst, dessen Querschnitt ein schwalbenschwanzförmiges Profil aufweist. Die Anschlagfläche wird zum grossen Teil oder vollständig durch den Belagträger gebildet. Insbesondere Belagträger aus formstabilem Material sind in der Lage, die Kräfte aufzunehmen, ohne dass innere Spannungen entstehen.Shear stresses on material transitions can be avoided if the sanding shoe lining comprises a lining carrier whose cross-section has a dovetail-shaped profile. The stop surface is largely or completely formed by the lining carrier. In particular lining carrier made of dimensionally stable material are able to absorb the forces without internal stresses.
In einer vorteilhaften Ausführungsform schliesst die Anschlagfläche des schwalbenschwanzförmigen Profils mit der Ebene der Anpressfläche einen Winkel von 110-130 Grad, bevorzug 120 Grad, ein. In diesem Fall weist das Profil an der Innenseite der schwalbenschwanzartigen Fortsätze einen 60 Grad Winkel auf.In an advantageous embodiment, the stop surface of the dovetailed profile encloses an angle of 110-130 degrees, preferably 120 degrees, with the plane of the contact surface. In this case, the profile on the inside of the dovetail-like projections on a 60 degree angle.
Auf der so angeschrägten Anschlagfläche werden die entstehenden Querkräfte optimal aufgenommen.On the so-inclined stop surface, the resulting transverse forces are optimally absorbed.
In einer weiteren vorteilhaften Ausführungsform der Erfindung weist der Schleifschuhbelag als Einlauf-Fläche für das Schleifband mindestens einen Schrägenbereich in einer von dem Schleifschuh wegweisenden Oberfläche auf, in welchem die Oberfläche nicht parallel zu der Anpressfläche verläuft, sondern mit dieser einen Winkel einschliesst. Der Schrägenbereich kann als ebene Fläche ausgebildet sein, er kann jedoch auch eine abgerundete oder facettierte Oberfläche besitzen.In a further advantageous embodiment of the invention, the sanding pad as an inlet surface for the sanding belt on at least one inclined portion in a direction away from the sanding pad surface, in which the surface is not parallel to the contact surface, but with this encloses an angle. The bevel area may be formed as a flat surface, but it may also have a rounded or faceted surface.
Für das Schleifergebnis ist es wichtig, dass der Schleifschuh eine genügend grosse Anpressfläche aufweist, welche entsprechend der Fläche des Werkstücks bzw. des Schleiftischs positioniert ist.For the grinding result, it is important that the grinding shoe has a sufficiently large contact surface, which is positioned according to the surface of the workpiece or the grinding table.
Die Oberfläche des Schleifschuhs ist den Kräften, die durch das bewegte Schleifband erzeugt werden in besonderem Masse ausgesetzt. Da der Schleifschuh das Schleifband gegen das Werkstück drückt, schliessen die Anpressfläche und das Schleifband in den Randbereichen einen Winkel ein. Die Beanspruchung des Schleifschuhbelags durch das Schleifband kann reduziert werden, wenn die Form des Schleifschuhbelags an den Einlauf-Winkel anpasst ist.The surface of the sanding pad is particularly exposed to the forces generated by the moving sanding belt. Since the sanding pad presses the sanding belt against the workpiece, the contact surface and the sanding belt enclose an angle in the edge regions. The load on the sanding pad by the sanding belt can be reduced if the shape of the sanding pad is adapted to the entry angle.
Da ähnliche Effekte auch auftreten, wenn das Schleifband vom Schleifschuh wegläuft, ist es vorteilhaft, wenn der Schrägenbereich als Auslaufschräge zum Anpressen eines von einem Werkstück weglaufenden Schleifbandes ausgebildet ist.Since similar effects also occur when the abrasive belt runs away from the sanding shoe, it is advantageous if the inclined region is formed as a discharge ramp for pressing an abrasive belt running away from a workpiece.
Bevorzugt weist also der Schleifschuhbelag eine Auslauf- und eine Einlaufschräge auf.Preferably, therefore, the sanding pad has an outlet and an inlet slope.
Die Ausgestaltung des Schrägenbereichs hängt von der Anordnung der Breitbandschleifmaschine ab, von dem Abstand der Antriebswalzen, der Elastizität der Schleifbänder und anderem.The design of the tapered region depends on the arrangement of the wide-belt sanding machine, on the spacing of the drive rollers, the elasticity of the sanding belts and others.
Für herkömmliche Breitbandschleifmaschinen ist es vorteilhaft, wenn der mindestens eine Schrägenbereich mit der Anpress-Fläche bzw. der Schleifebene einen Winkel von 4-10 Grad einschliesst.For conventional wide-belt sanding machines, it is advantageous if the at least one bevel area encloses an angle of 4-10 degrees with the contact surface or the grinding plane.
Der Anpressdruck in den Randbereichen kann besonders gut an die Anforderungen im Einzelfall angepasst werden, wenn der Belagträger aus formstabilem Material besteht und selbst im Randbereich abgeschrägt ist.The contact pressure in the edge areas can be adapted particularly well to the requirements in individual cases, if the lining carrier consists of dimensionally stable material and is even beveled in the edge region.
Erfindungsgemäß ist auf dem Belagträger eine Polsterschicht vorgesehen, die zumindest im Bereich der Anpressfläche mit einem gleitfähigen Material versehen ist. Bevorzugt ist das gleitfähige Material auch in den Randbereichen vorgesehen, sodass die gesamte Kontaktfläche zum Schleifband eine ausreichende Gleitfähigkeit aufweist.According to the invention, a padding layer is provided on the lining carrier which, at least in the region of the contact surface, is provided with a lubricious material is. Preferably, the lubricious material is also provided in the edge regions, so that the entire contact surface to the grinding belt has sufficient lubricity.
Bei der geschichteten Ausführung lassen sich für die Polsterschicht und das gleitfähige Material Belagschichten verwenden, die sich bereits bei Schleifschuhen, die aus dem Stand der Technik bekannt sind, bewährt haben.In the layered design can be used for the cushion layer and the lubricious material covering layers, which have already proven in abrasive shoes, which are known from the prior art.
In einer vorteilhaften Ausgestaltung der Erfindung ist der Schleifschuhbelag mit einem Polstermaterial versehen, welches zumindest auf einem Teil seiner Dicke mit einem Gleitmaterial, bevorzugt Graphit oder einer Graphitverbindung, durchsetzt ist. Die Dicke des Polstermaterials bezeichnet dabei die Ausdehnung senkrecht zur Anpressfläche.In an advantageous embodiment of the invention, the sanding pad is provided with a cushioning material, which at least on a part of its thickness with a sliding material, preferably graphite or a graphite compound, interspersed. The thickness of the cushioning material denotes the extent perpendicular to the contact surface.
Polstermaterial besitzt zumeist eine offenporige Struktur mit einer grossen Oberfläche, an der sich das Gleitmaterial absetzen kann. Das Polstermaterial kann aber auch selbst Komponenten aufweisen, die eine ausreichende Gleitfähigkeit garantieren. In beiden Fällen liegt ein Polstermaterial vor, das eine gleitfähige Anpressfläche bietet.Padding material usually has an open-pore structure with a large surface area at which the sliding material can settle. The padding material can also have components that guarantee sufficient lubricity. In both cases, there is a padding material that provides a lubricious contact surface.
Bevorzugt handelt es sich bei dem Polstermaterial um einen Schaumstoff, insbesondere einen PU-Schaumstoff, und/oder einen Filz. Schaumstoffe und Filze haben sich als Polstermaterialien bewährt und lassen sich gut mit Gleitmaterialien in Verbindung bringen.The cushioning material is preferably a foam, in particular a PU foam, and / or a felt. Foams and felts have proven to be upholstery materials and can be combined well with lubricants.
Alternativ ist auch ein Gleitmaterial denkbar, das durch geeignete Zusatzstoffe oder Trägermaterialien elastische Eigenschaften aufweist.Alternatively, a sliding material is conceivable which has elastic properties by means of suitable additives or carrier materials.
Die Aufgabe der erfindungsgemässen Aufgabe wird weiterhin gelöst durch einen Schleifschuh gemäß Anspruch 11.The object of the inventive task is further solved by a sanding pad according to claim 11.
Schleifschuh und Schleifschuhbelag erlauben eine kurze Umrüstzeit und einfache Austauschbarkeit.Sanding pad and sanding pad allow a short changeover time and easy interchangeability.
Der erfindungsgemässe Schleifschuh nimmt die auftretenden Kräfte über die Anschlagflächen in den Ausnehmungen auf, das heisst, die Kräfte werden auf den Korpus des Schleifschuhs und nicht auf etwaige Halteelemente übertragen, was dem gesamten Schleifschuh Stabilität verleiht.The inventive abrasive shoe absorbs the forces occurring over the stop surfaces in the recesses, that is, the forces are transmitted to the body of the sanding pad and not on any retaining elements, which gives the entire sanding shoe stability.
Der Schleifschuh besitzt eine Ausnehmung mit einer Basisfläche, die bevorzugt parallel zu der Anpressfläche bzw. der Anpressfläche verläuft und an welcher der Schleifschuhbelag anliegt.The grinding shoe has a recess with a base surface, which preferably runs parallel to the contact surface or contact surface and against which the sanding shoe lining rests.
In einer vorteilhaften Ausgestaltung der Erfindung ist die Anschlagfläche des schwalbenschwanzförmigen Profils gegenüber einer Ebene parallel zu der Anpressfläche, zum Beispiel der Basisfläche, in einem Winkel von 40-70 Grad, bevorzug 60 Grad, angeordnet.In an advantageous embodiment of the invention, the stop surface of the dovetail-shaped profile with respect to a plane parallel to the contact surface, for example, the base surface, at an angle of 40-70 degrees, preferably 60 degrees, arranged.
Die Erfindung ist im Folgenden in Ausführungsbeispielen anhand von Zeichnungen näher erläutert. Es zeigen:
Figur 1- eine schematische Schnittdarstellung einer Bandschleifmaschine mit einer Schleifschuh,
Figur 2- eine schematische Schnittdarstellung eines Schleifschuhs mit einem ersten Beispiel für einen Schleifschuhbelag,
Figur 3- eine schematische Seitenansicht eines zweiten Beispiels für einen Schleifschuhbelag,
- Figur 4
- eine schematisches Schnittdarstellung eines dritten Beispiels für einen Schleifschuhbelag,
Figur 5- eine schematische Schnittdarstellung eines vierten Beispiels für einen Schleifschuhbelag,
Figur 6- eine schematische Schnittdarstellung eines fünften Beispiels für einen Schleifschuhbelag,
- Figur 7a, 7b
- schematische Schnittdarstellungen zweier weiterer Beispiele für Schleifschuhbeläge,
- Figuren 8a,
- eine schematische Schnittdarstellung eines Beispiels für eine Gleitschicht
- FIG. 1
- a schematic sectional view of a belt grinding machine with a sanding pad,
- FIG. 2
- FIG. 2 a schematic sectional view of a sanding pad with a first example of a sanding shoe lining, FIG.
- FIG. 3
- a schematic side view of a second example of a Schleifschuhbelag,
- FIG. 4
- a schematic sectional view of a third example of a Schleifschuhbelag,
- FIG. 5
- a schematic sectional view of a fourth example of a Schleifschuhbelag,
- FIG. 6
- FIG. 2 is a schematic sectional view of a fifth example of a sanding shoe lining. FIG.
- Figure 7a, 7b
- schematic sectional views of two further examples of Schleifschuhbeläge,
- FIGS. 8a,
- a schematic sectional view of an example of a sliding layer
Ein Werkstück 3 wird auf einem Schleiftisch 4 unter einem umlaufenden Schleifband 5 gefördert. Das Schleifband 5 wird von drei Antriebswalzen 6 in einer Laufrichtung 7 angetrieben und durch den Schleifschuh 2 gegen das Werkstück gepresst.A
Ein Träger 8 ist mit Ausnehmungen 9 zur Befestigung an der Bandschleifmaschine und Ausnehmungen 10 versehen, in welche der Belagträger 111 des Schleifschuhbelags 101 eingeschoben werden kann.A
Die Polsterschicht 112 ist lediglich im Bereich der Anpressfläche 114 vorgesehene. In dem ersten Randbereich 115, an welchem das Schleifband 5 an den Schleifschuhbelag 101 anläuft, und in dem zweiten Randbereich 116, an welchem das Schleifband von dem Schleifschuhbelag 101 wegläuft, ist der Belagträger 111 lediglich von der Gleitschicht 113 bedeckt.The cushioning layer 112 is provided only in the region of the
Der Belagträger 311 weist Anschlagflächen 320 zur Aufnahme von Querkräften auf.The
Der Belagträger 311 ist aus einer MDF Platte hergestellt. Das schwalbenschwanzförmige Profil 317, die Einlaufschräge 318 und die Auslaufschräge 319 sind gefräst.The
In der Figur sind die von den jeweiligen Flächen eingeschlossenen Winkel erläutert.In the figure, the included angle of the respective surfaces are explained.
Die Schrägenbereiche 722 schliessen mit der Schleifebene 723 einen Winkel A von bevorzugt 6 Grad ein.The
Die Anschlagflächen 720 schliessen mit der Anpressfläche 714 einen Winkel B von bevorzugt 120 Grad ein.The stop surfaces 720 close with the
In einem Beispiel für einen Schleifschuhbelag 801a weist der Belagträger 811 a eine abgerundete Anschlagfläche 820a und einen abgerundeten Auslaufschräge 819a auf. Die Ausnehmung 810a im Träger 808a besitzt eine entsprechende Form.In one example of a shoe pad 801a, pad backing 811a has a rounded abutment surface 820a and a rounded run-
In einem weiteren Beispiel für einen Schleifschuhbelag 801b besitzt der Belagträger 811b in der Laufrichtung 807 des nicht gezeigten Schleifbandes eine erste abgeschrägte Anschlagfläche 820b und eine zweite Anschlagfläche 820b', welche die durch das Schleifband übertragene Kraft in Laufrichtung 807 auf den Träger 808b überträgt. Auf der der Laufrichtung 807b abgewandten Seite 827 eine nicht abgeschrägte Anschlagfläche 820b", an welcher der Schleifschuhbelag 801b mittels eines Verbindungselements 828 an dem Träger 808b befestigt ist.In another example of a sanding pad 801b, the backing 811b has a first
Als Holzwerkstoff eignen sich insbesondere MDF oder HDF oder Spanplatten.MDF or HDF or chipboard are particularly suitable as wood-based material.
Vor allem MDF-Platten (Medium Density Fibre Platten) mit einer Dichte von 750 bis 950 kg/m3 und einer UF oder MUF-Bindung sind besonders geeignet. Diese Platten sind in genormter DIN 622 Teil 5 Ausführung von Herstellern wie Kronospan, CH-Menznau, oder Kaindl, AT-Salzburg, unter der Bezeichnung Standard MDF (z. Bsp. Flooring) erhältlich. MDF-Platten können bevorzugt in einer Dicke von 3 bis 6 mm als Belagträger verwendet werden. Besonders geeignet sind Dicken von 4,4 bis zu 5 mm.Above all, MDF (Medium Density Fiber Plates) with a density of 750 to 950 kg / m 3 and a UF or MUF bond are particularly suitable. These panels are available in standardized DIN 622
Auch Fibermaterial, also in Schwefelsäure aufgeschlossene Baumwollfasern eignen sich gut als Werkstoff. Fibermaterial ist erhältlich unter der Bezeichnung Vulkanfiber oder Dynos-Fiber bei Sachsenröder, D- Wuppertal oder Troplast AG, D-Troisdorf. Fibermaterial kann in Dicken von 0.38 mm bis 2.0 mm vorteilhaft verwendet werden.Also fiber material, so in open sulfuric acid open cotton fibers are well suited as a material. Fiber material is available under the name Vulkanfiber or Dynos-Fiber at Sachsenröder, D-Wuppertal or Troplast AG, D-Troisdorf. Fiber material can be used to advantage in thicknesses of 0.38 mm to 2.0 mm.
Als weiterer Werkstoff sind Kunststoffe als Materila für den Belagträger geeignet. Es eignen sich diverse Thermoplaste wie z.B. PES, PET, PA, ABS, alle auch in gefüllter und verstärkter Form.As a further material, plastics are suitable as Materila for the lining carrier. There are various thermoplastics such as PES, PET, PA, ABS, all in filled and reinforced form.
Ebenso Duroplaste wie z.B. Epoxide, Aminoharze oder Phenolharze. Als typische Handelsnamen kann man Corean, Varior oder Resocel anfügen.Likewise thermosets such as Epoxies, amino resins or phenolic resins. As typical trade names you can add Corean, Varior or Resocel.
Nachstehend sind verschiedene Ausführungsformen von Polster- und Gleitschichten beschrieben, die vorteilhaft bei der Erfindung zur Anwendung kommen können.Hereinafter, various embodiments of cushioning and sliding layers are described, which can be advantageously used in the invention.
Als Polstermaterial eignet sich z.B. Filz-Auflagen in einer Dicke von 3 bis 4 mm, bevorzugt von 3 bis 3,5 mm. Der Filz hat vorzugsweise ein Volumengewicht von ca. 0,2 bis 0,7 g/cm3. Er ist z.B. unter der Bezeichnung Wollfilz bei VFG, D-Giengen erhältlich; der Filz kann mit dem Belagträger z.B. mittels PU-Klebstoff verklebt werden.As padding material, for example, felt pads in a thickness of 3 to 4 mm, preferably from 3 to 3.5 mm. The felt preferably has a volume weight of about 0.2 to 0.7 g / cm 3 . It is available, for example, under the name wool felt from VFG, D-Giengen; the felt can be glued to the lining carrier eg by means of PU glue.
In
Um den Filz, der als Polsterschicht dient gleitfähig zu machen, kann er z.B. mit einer Graphit-Bindemittelmischung wenigstens auf der Anpressfläche derart gefüllt werden, dass die Anpressfläche Gleiteigenschaften aufweist. Das Graphitmaterial kann von Graphit Kropfmühl AG, D-Hauzenberg, bezogen werden. Wenn es zusammen mit einem Bindemittel, wie z.B. Latex, Acrylat oder PUR in den Filz eingebracht wird, wird der Filz ausreichend gefüllt. An Stelle eines Filzes kann für diese Anwendung auch ein Vlies verwendet werden. Es können Nadelvliese wie sie von sia Fibral oder chemisch gebundene Vliese wie sie z.B. von Resintex , IT-Mailand, hergestellt werden.In order to make the felt, which serves as a cushioning layer, lubricatable, it can be filled, for example, with a graphite binder mixture at least on the contact surface in such a way that the contact surface has sliding properties. The graphite material can be obtained from Graphit Kropfmühl AG, D-Hauzenberg. When put into the felt together with a binder such as latex, acrylate or PUR, the felt is sufficiently filled. Instead of a felt, a fleece can be used for this application. Needle nonwovens such as those produced by sia Fibral or chemically bonded nonwovens can be produced, for example, by Resintex, IT-Milan.
Alternativ ist es auch denkbar, das Gleitmittel, z.B. Graphit mit einem Bindemittel, wie z.B. einem flüssigen Polyurethanklebstoff oder einem Latex- oder Acrylat-Klebstoff beizumengen und diese Schicht unmittelbar auf die Polsterschicht (z.B. eine Filzschicht oder eine Schaumstoffschicht) aufzutragen. Diese Techniken sind im Stand der Technik allgemein bekannt, weil bislang die Gleitschichten auf textile Bänder aufgetragen werden und diese über die Polsterschichten gespannt oder mit den Polsterschichten verklebt werden. Abweichend schlägt die Erfindung demgemäss vor, statt eine separate textile Trägerschicht unmittelbar die Polsterschicht mit Gleitmittel zu beschichten.Alternatively, it is also conceivable to use the lubricant, e.g. Graphite with a binder, e.g. a liquid polyurethane adhesive or a latex or acrylate adhesive and apply this layer directly on the cushion layer (for example, a felt layer or a foam layer). These techniques are well known in the art because so far the slip layers are applied to textile ribbons and these are stretched over the cushion layers or bonded to the cushion layers. Deviating, the invention proposes accordingly, instead of a separate textile carrier layer directly to coat the pad layer with lubricant.
Claims (12)
- Sanding pad covering for use on a sanding pad (2) for pressing a sanding belt (5) against a workpiece in a wide belt sanding machine (1), said sanding pad covering having at least one slidable pressure surface (114), wherein the sanding pad covering (101; 201; 301; 401; 701; 801a, 801b) has a covering support (111; 211; 311; 411, 811a, 811b), wherein the covering support (111; 211; 311; 411, 811a, 811b) has stop surfaces (320; 420; 820a, 820b, 820b', 820b") for absorbing transverse forces, wherein the stop surfaces (320; 420; 820a, 820b, 820b', 820b") enclose an angle (B) with a plane parallel to the pressure surface (114) and wherein the stop surfaces (320; 420; 820a, 820b, 820b', 820b") are arranged on the end facing in the running direction of the sanding belt (5) and on the end facing against the running direction of the sanding belt (5), wherein a cushion layer (112; 212; 312; 412; 912) is provided on the covering support (111; 211; 311; 411, 811a, 811b), said cushion layer (112; 212; 312; 412; 912) being covered with a slidable layer (929) at least in the region of the pressure surface (114, 714), characterized in that the covering support (111; 211; 311; 411, 811a, 811b) consists of non-metallic material.
- Sanding pad covering according to Claim 1, characterized in that the covering support (111; 211; 311; 411, 811a, 811b) contains or consists of a cellulose material, in particular a wooden material and/or a cotton material and/or a polymer material.
- Sanding pad covering according to Claim 2, characterized in that the wooden material and/or the cotton material contains or consists of MDF, HDF or a fibre material.
- Sanding pad covering according to one of the preceding claims, characterized in that the cross section of the sanding pad covering (101; 201; 301; 401; 701; 801a, 801b) has a dovetailed profile (217; 317; 417).
- Sanding pad covering according to one of the preceding claims, characterized in that the at least one stop surface (320; 420; 820a, 820b, 820b', 820b'') encloses an angle (B) of 110-130 degrees, preferably 120 degrees, with the plane of the pressure surface (114).
- Sanding pad covering according to one of Claims 1 to 5, characterized in that the sanding pad covering (101; 201; 301; 401; 701; 801a, 801b) has at least one sloping region (722) in a surface pointing away from the sanding pad, in which sloping region (722) the surface does not run parallel to the pressure surface (114; 714) but rather encloses an angle (A) with the latter.
- Sanding pad covering according to Claim 6, characterized in that the sloping region (722) is designed as an entering slope (218; 318; 418) for pressing against a sanding belt (5) running towards a workpiece (3).
- Sanding pad covering according to either of Claims 6 and 7, characterized in that the sloping region (722) is designed as a leaving slope (219; 319; 419) for pressing against a sanding belt (5) running away from a workpiece (3).
- Sanding pad covering according to one of Claims 6 to 8, characterized in that the at least one sloping region (722) encloses an angle (B) of 4-10 degrees with the sanding plane (723).
- Sanding pad covering according to one of Claims 6 to 9, characterized in that the at least one sloping region (722) is formed on the covering support (111; 211; 311; 411; 811a, 811b).
- Sanding pad having a sanding pad covering according to one of Claims 1 to 10, characterized in that the sanding pad (2) comprises a support (8) which has recesses (10), the cross section of which has a dovetailed profile.
- Sanding pad according to Claim 11, characterized in that the stop surface of the dovetailed profile is arranged at an angle of 40-70 degrees, preferably 60 degrees, relative to a plane parallel to the pressure surface.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL05103518T PL1716972T3 (en) | 2005-04-28 | 2005-04-28 | Pressure shoe layer |
ES05103518T ES2349644T3 (en) | 2005-04-28 | 2005-04-28 | LINING FOR SANDING SKATE. |
EP10151894.2A EP2189243B1 (en) | 2005-04-28 | 2005-04-28 | Pressure shoe layer |
DE502005010069T DE502005010069D1 (en) | 2005-04-28 | 2005-04-28 | Sanding pad covering |
EP05103518.6A EP1716972B2 (en) | 2005-04-28 | 2005-04-28 | Pressure shoe layer |
DE200520021781 DE202005021781U1 (en) | 2005-04-28 | 2005-04-28 | Sanding pad covering |
AT05103518T ATE477080T1 (en) | 2005-04-28 | 2005-04-28 | GRINDING SHOE COVERING |
PT05103518T PT1716972E (en) | 2005-04-28 | 2005-04-28 | Pressure shoe layer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05103518.6A EP1716972B2 (en) | 2005-04-28 | 2005-04-28 | Pressure shoe layer |
Related Child Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10151894.2A Division-Into EP2189243B1 (en) | 2005-04-28 | 2005-04-28 | Pressure shoe layer |
EP10151894.2A Division EP2189243B1 (en) | 2005-04-28 | 2005-04-28 | Pressure shoe layer |
EP10151894.2 Division-Into | 2010-01-28 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1716972A1 EP1716972A1 (en) | 2006-11-02 |
EP1716972B1 true EP1716972B1 (en) | 2010-08-11 |
EP1716972B2 EP1716972B2 (en) | 2020-08-19 |
Family
ID=34977141
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10151894.2A Active EP2189243B1 (en) | 2005-04-28 | 2005-04-28 | Pressure shoe layer |
EP05103518.6A Active EP1716972B2 (en) | 2005-04-28 | 2005-04-28 | Pressure shoe layer |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10151894.2A Active EP2189243B1 (en) | 2005-04-28 | 2005-04-28 | Pressure shoe layer |
Country Status (6)
Country | Link |
---|---|
EP (2) | EP2189243B1 (en) |
AT (1) | ATE477080T1 (en) |
DE (1) | DE502005010069D1 (en) |
ES (1) | ES2349644T3 (en) |
PL (1) | PL1716972T3 (en) |
PT (1) | PT1716972E (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE502005010069D1 (en) | 2005-04-28 | 2010-09-23 | Sia Abrasives Ind Ag | Sanding pad covering |
EP2390054A1 (en) | 2010-05-27 | 2011-11-30 | sia Abrasives Industries AG | Skate lining holder with recesses |
DE102011117032A1 (en) * | 2011-10-27 | 2013-05-02 | Hülsemann GmbH | Method for producing a sanding shoe cover |
CN104249300A (en) * | 2013-06-25 | 2014-12-31 | 苏州意玛斯砂光设备有限公司 | Grinding mat system for sanding machine |
PL3178606T3 (en) * | 2015-12-09 | 2020-05-18 | Steinemann Technology Ag | Sanding shoe and a method for fixing the sanding shoe |
DE102016119500A1 (en) * | 2015-12-09 | 2017-06-14 | Steinemann Technology Ag | Sanding pad, device for fixing a Scheifschuhs, sanding shoe holder and a method |
DE102015226418A1 (en) | 2015-12-22 | 2017-09-07 | Robert Bosch Gmbh | Process for the dry production of a sliding layer |
CN106891227A (en) * | 2017-02-15 | 2017-06-27 | 青岛三山碳素有限公司 | A kind of sander presses nog plate and preparation method thereof with fast-assembling |
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US3049839A (en) | 1960-02-29 | 1962-08-21 | Smithway Machine Company Inc | Air actuated platen for sanding machines |
DE1944194A1 (en) * | 1969-08-30 | 1971-03-04 | C F Schroeder Schmirgelwerke K | Grinding machine sliding belt |
US4038784A (en) * | 1976-05-07 | 1977-08-02 | Acrometal Products, Inc. | Method and apparatus for cross grain abrading to produce a rough-sawn effect |
DE2634829C3 (en) | 1976-08-03 | 1982-04-01 | Böttcher & Gessner GmbH, 2000 Hamburg | Pressure bars for belt grinders |
DE8306148U1 (en) | 1983-03-04 | 1983-11-03 | Johannsen, Hans-Peter, Dipl.-Ing., 3559 Battenberg | GRINDING SHOE FOR A LONG-BAND GRINDING MACHINE |
US4651474A (en) | 1984-08-24 | 1987-03-24 | Timesavers, Inc. | Wide belt sanding machine with platen oscillating means |
DE3521840A1 (en) | 1984-12-04 | 1986-06-05 | Carborundum Schleifmittelwerke GmbH, 4000 Düsseldorf | Improved grinding shoe for pressing a circulating grinding belt of a belt-grinding machine onto the workpiece to be machined, and process for grinding plate-shaped materials |
EP0227859A1 (en) * | 1984-12-04 | 1987-07-08 | Carborundum Schleifmittelwerke GmbH | Grinding shoe for pressing a rotating grinding belt of a belt grinder against the work piece to be ground, and method of grinding plate-shaped material |
DE8814128U1 (en) * | 1988-11-11 | 1989-03-09 | Reinhold Heß GmbH & Co KG Maschinenbau, 7460 Balingen | Sanding shoe for a surface grinding machine |
DD298613A5 (en) * | 1989-09-15 | 1992-03-05 | Wtz Holzverarbeitende Ind | ANDRUCKEMENT FOR TWO-SIDED WORKING BROADBAND CONTACT GRINDING MACHINES |
DE9103014U1 (en) * | 1991-03-13 | 1991-06-06 | Johannsen, Hans-Peter, Dipl.-Ing., 3559 Battenberg | Sanding shoe for a long belt sander |
DE4114819C1 (en) † | 1991-05-07 | 1992-02-06 | Ott-Holzmaschinen Gmbh, 7064 Remshalden, De | Flat belt grinding machine - uses hose-shaped inflatable cushion to apply pressure to belt |
AT617U1 (en) * | 1994-03-24 | 1996-02-26 | Werner Neukamp Kunststoffverar | GRINDING SHOE FOR A BELT GRINDING MACHINE |
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DE19921043C2 (en) | 1999-05-07 | 2002-09-19 | Juergen Heesemann | belt sander |
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DE102004057652B3 (en) * | 2004-07-27 | 2006-03-23 | Hülsemann, Thomas | sanding pad |
DE502005010069D1 (en) | 2005-04-28 | 2010-09-23 | Sia Abrasives Ind Ag | Sanding pad covering |
-
2005
- 2005-04-28 DE DE502005010069T patent/DE502005010069D1/en active Active
- 2005-04-28 EP EP10151894.2A patent/EP2189243B1/en active Active
- 2005-04-28 AT AT05103518T patent/ATE477080T1/en active
- 2005-04-28 EP EP05103518.6A patent/EP1716972B2/en active Active
- 2005-04-28 PT PT05103518T patent/PT1716972E/en unknown
- 2005-04-28 PL PL05103518T patent/PL1716972T3/en unknown
- 2005-04-28 ES ES05103518T patent/ES2349644T3/en active Active
Non-Patent Citations (1)
Title |
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THOMAS HÜLSEMANN: "... über den Holzschliff", 1 May 1991, THOMAS HÜLSEMANN, 46149 Oberhausen, Deutschland * |
Also Published As
Publication number | Publication date |
---|---|
PL1716972T3 (en) | 2011-02-28 |
EP2189243A3 (en) | 2010-09-08 |
PT1716972E (en) | 2010-09-30 |
EP1716972A1 (en) | 2006-11-02 |
ES2349644T3 (en) | 2011-01-07 |
DE502005010069D1 (en) | 2010-09-23 |
EP1716972B2 (en) | 2020-08-19 |
EP2189243A2 (en) | 2010-05-26 |
ATE477080T1 (en) | 2010-08-15 |
EP2189243B1 (en) | 2015-12-23 |
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