EP2586567A2 - Procédé de fabrication dýune semelle de patin de ponçage - Google Patents

Procédé de fabrication dýune semelle de patin de ponçage Download PDF

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Publication number
EP2586567A2
EP2586567A2 EP12007356.4A EP12007356A EP2586567A2 EP 2586567 A2 EP2586567 A2 EP 2586567A2 EP 12007356 A EP12007356 A EP 12007356A EP 2586567 A2 EP2586567 A2 EP 2586567A2
Authority
EP
European Patent Office
Prior art keywords
sliding layer
sanding
carrier material
cushioning material
plastic
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.)
Withdrawn
Application number
EP12007356.4A
Other languages
German (de)
English (en)
Other versions
EP2586567A3 (fr
Inventor
Thomas Hülsemann
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.)
Huelsemann GmbH
Original Assignee
Huelsemann 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 Huelsemann GmbH filed Critical Huelsemann GmbH
Publication of EP2586567A2 publication Critical patent/EP2586567A2/fr
Publication of EP2586567A3 publication Critical patent/EP2586567A3/fr
Withdrawn legal-status Critical Current

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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 method for producing a Schleffschuhbelags, comprising at least one padding material and a sliding layer, in which a connection between a padding material and a sliding layer,
  • the cushioning material is applied in liquid form to the sliding layer for curing, wherein a positive and / or non-positive connection of sliding layer and cushioning material is produced.
  • belt sanding machines For grinding large surfaces of workpieces, such as wood-based panels, belt sanding machines are often used.
  • belt sanding machines a wide sanding belt is driven by rollers, the sanding belt running parallel to a sanding table between two rollers.
  • a so-called grinding shoe For extensive pressure of the grinding belt on the workpiece usually a so-called grinding shoe is used.
  • a sliding coating is applied to the shoe. This makes it possible to press the sanding belt with only a small sliding resistance with the help of the sanding pad on the workpiece. A uniform grinding result can only be achieved if the grinding belt is pressed evenly onto the workpiece.
  • a cushioning material is provided between the sanding shoe and the sliding lining.
  • the padding material is now achieved that the grinding pressure on slight elevations of the workpiece is greater than in small depressions of the surface. This achieves an additional leveling of the workpiece surface.
  • a padding material adapted to the grinding process is used if possible.
  • the wear of the abrasive belt increases. Therefore, it is of great importance to set the padding as closely as possible to the desired degree of grinding.
  • usually padding materials are used, which in three different degrees of hardness are available. Another reason to use a cushioning material arises from the need to compensate for impacts caused by the abrasive belt.
  • Such impacts may be caused, for example, by the closing seam of the abrasive belt, which is necessary to produce a revolving abrasive belt.
  • This seal seam changes the material properties of the sanding belt, as the material rests twice here. If the closing seam of the sanding belt runs over the workpiece, the height difference in the sealing seam must be compensated by a padding material.
  • a grinding shoe device is for example from the DE 203 15 291 U1 known, which consists of a sanding pad and a Schleifschuhbelag.
  • the grinding shoe is firmly integrated into the grinding device. Since the sliding layer is particularly worn during operation and must be replaced at regular intervals, a replaceable sanding pad is provided in accordance with the prior art.
  • This sanding pad usually consists of a carrier material, a padding material and a sliding layer.
  • the carrier material here serves to absorb the resulting tensile forces by the abrasive belt passing on the abrasive belt and transferred to the fixed fixed grinding shoe.
  • a major disadvantage of the prior art is that the sliding layer separates from the cushioning material. Normally, an adhesive bond between these two layers is used. With the great forces and high temperatures that arise during the grinding process, this adhesive bond is often not stable enough to withstand external influences for a long time. As soon as the sliding layer separates from the padding material, the grinding process must be interrupted and the sanding pad cover replaced. This causes high costs due to the stoppage of the grinding device and the high wear of Schleifschuhbelägen. Furthermore, there is also a safety risk in the event that the carrier material Metal exists. The metal is electrostatically charged by the high friction and thus it can lead to a discharge when replacing the Schleifschuhbelages, which persons or objects are at risk.
  • wool felt is used as the padding material.
  • Wool felt is a natural product and is often made from sheep wool. With such natural products a consistent quality can not be ensured.
  • inhomogeneities within the wool felt cause uneven sanding pressure when used as a cushioning material, which eventually results in that the sanding result does not meet the requirements.
  • Another problem with using wool felt is that it is hydrophilic. The incorporation of water in wool felt results in further inhomogeneities, which lead to deterioration of the grinding result.
  • wool felt is a very expensive raw material, whereby the total cost of Schleifschuhbelages be further increased.
  • the available cushioning material can only be produced in a few specific degrees of hardness.
  • the degree of hardness of the cushioning material is a significant influencing factor on the grinding result. The finer the grinding process must be, the softer the cushioning material must be. However, if the padding material is very soft, this additionally increases the wear of the sanding belt. Depending on the application, a cost-benefit calculation must be carried out and the padding material of the sanding shoe cover selected accordingly.
  • the state of the art usually offers only a few different degrees of hardness in order to take this fact into account. Applying the graphite layer to the cushioning material creates additional problems. The graphite layer is usually applied to a fabric tape or paper.
  • a Schleifschuhbelag known which may be formed of a polyurethane foam, the graphite powder is added to the polyurethane in its liquid phase, so that formed on the surface of the cushioning material consisting of the graphite particles sliding layer. The thus formed cushion layer is then fixed by gluing on a lining carrier.
  • Such Schleifschuhbeläge have the disadvantage that the graphite particles do not form a sufficient sliding layer.
  • the present invention is therefore based on the object to provide a method for producing a Schleifschuhbelages with an optimal connection of the individual components and an improved cushioning material with lower production costs.
  • the cushioning material is applied in liquid form to the sliding layer for curing, wherein a positive and / or non-positive connection of sliding layer and cushioning material is produced.
  • a layer sequence of carrier material, cushioning material and sliding layer results.
  • the cushioning material is introduced in liquid form between the carrier material and the sliding layer, in order subsequently to harden, so that a positive and / or fluid connection also results.
  • this connection exists on the one hand between cushioning material and carrier material and on the other hand between the sliding layer and the cushioning material.
  • Both types of sanding pad coverings are used, on the one hand with and on the other hand without backing material, depending on the structure of the sanding machine, especially a wide-belt sanding machine.
  • a plastic material is used, preferably based on a multi-component polyurethane material.
  • the plastic material is introduced in liquid form into a production mold provided at least on one side with a sliding layer.
  • the liquid plastic preferably based on a multi-component polyurethane material, permanently connected to the sliding layer and, if provided, also with the carrier material.
  • a plastic is used for the cushioning material, which is based on a multi-component polyurethane material.
  • the polyurethane material is foamed according to the method according to the invention by means of an applicator, preferably in the simplest case in the form of spray nozzles, in the production form.
  • the cushioning material is in this case within a longer period of time, the period is determined by the length of the residence time within the closed production form, fixed by the walls of the manufacturing mold with respect to the shaping. Depending on the mixed components, this time can be set so that a subsequent increase in volume is excluded.
  • the components of the polyurethane material are in this case mixed at high pressures, for example countercurrently, outside the coating apparatus in a metering machine and introduced at a high pressure into a distribution channel and finally into the production mold.
  • the reaction rate of the multi-component polyurethane material and thus the setting of the cushioning material can be influenced by cooling or heating.
  • by appropriate mixtures of the components and appropriate control of the temperature or pressure of the degree of hardness of the cushioning material can be set arbitrarily. In this case, particularly soft and extremely homogeneous cushioning materials can be produced to allow a particularly fine grinding result. It can also be made very hard padding materials. The degree of hardness can thus be adjusted to the desired result and the requirements for the grinding device are adjusted. As a result, a cushioning material is produced, which meets the high requirements for homogeneity and variability in the grinding process.
  • the cushioning material in a degree of hardness which increases towards the sanding shoe.
  • different plastic combinations preferably based on a multi-component polyurethane material, applied in several layers.
  • the device accordingly provides several applicators, preferably spray nozzles.
  • a further fine adjustment of the degree of hardness for optimizing the grinding result can be achieved with low abrasive belt wear.
  • even with large forces during the grinding process can be dispensed with a separate carrier material.
  • a lowermost layer can be made particularly hard directly on the sanding shoe in order to transfer the resulting forces optimally to the sanding shoe.
  • a separate carrier material is thus superfluous and the production of the Schleifschuhbelages further simplified.
  • the padding material also provides fastening means, preferably hooks, eyes and / or expansions for receiving corresponding recesses provided on the carrier material or directly on the sanding pad.
  • the padding material can thus be exchangeably attached to the carrier material or directly on the sanding pad.
  • hooks and corresponding eyelets can be provided correspondingly to the padding material and to the carrier material or to the sanding pad.
  • a sliding layer graphite is used in conjunction with a fabric tape and / or a paper support.
  • the sliding layer is inserted into the production mold and the plastic for forming the cushioning material is applied to the sliding layer.
  • the production form can be coated directly with graphite.
  • spraying the plastic material then forms a sliding layer on the top of the plastic.
  • the sliding layer becomes an integral part of the cushioning material.
  • the sanding shoe lining can satisfy particularly high demands during the grinding process.
  • large forces and high temperatures can not detach the sliding layer from the cushioning material, the sliding layer preferably being formed on the head side by the previous application of the sliding layer in the production mold. in the contact area of the grinding belt, is formed.
  • the sanding shoe lining can have inlet and / or outlet slopes, which are formed in the production mold. For shaping these inlet and / or outlet slopes sees the production form the Schleifschuhbelages bevels on the edge before, whereas the center is formed plane-parallel.
  • the recess of the manufacturing mold may additionally provide a recess for receiving the carrier material.
  • a sanding pad can be produced, which additionally provides a carrier material as an integral part.
  • the production mold can be completely closed like a vulcanizing unit. This ensures that the cushioning material is formed homogeneously and assumes a uniform shape during foaming.
  • a production mold which merely provides for introducing the sliding layer, in order subsequently to introduce the plastic material, for example a multicomponent polyurethane material, with the aid of at least one application unit.
  • the plastic material for example a multicomponent polyurethane material
  • a carrier material is additionally taken up in the production mold, so that the liquid plastic is introduced between the carrier material and the sliding layer.
  • different layers of plastic materials are introduced into the production mold simultaneously or successively, so that the elasticity of the cushioning material can be influenced during the production process.
  • the production mold for the production of a Schleifschuhbelages may be formed in the form of an endless belt.
  • the manufacturing mold is open at the front and has a propulsion, whereby the plastic material forming the padding material is further transported.
  • Such an endless belt comprises a lower and / or upper production mold, which may additionally be provided with a sliding layer. On one side, for example, the sliding layer of the production form is supplied and sprayed with the plastic material forming the cushioning material.
  • the plastic cures during the residence time within the lower and upper Production form.
  • the residence time is adjusted either by the transport speed or the length of the lower and / or upper production mold on the setting time of the plastic, preferably based on a polyurethane material.
  • the finished sanding pad comes out.
  • an already finished part of the sanding shoe lining for example a cured carrier material can be used, on which the cushioning material is applied.
  • the production form can be used in 2 stages first for producing a plastic carrier material and then for foaming the cushion layer.
  • a production mold is preferably used which is self-contained and provides a supply of necessary components of the Schleifschuhbelages the front side, while exiting from the opposite end opening of the finished sanding shoe lining.
  • the sanding pad can be produced with such a device in an endless process in any length and a large area to process this later.
  • the sanding pad can be made in an adapted to the carrier material or the sanding shoe width of the manufacturing mold and optionally provided with inlet and / or outlet slopes.
  • the preparation form is provided prior to application of the plastic, for example, with a Teflon coating, a release wax and / or sprayed release agents or these are introduced simultaneously with the incoming sliding layer.
  • the Schleifschuhbelag produced on an endless belt for example, for further processing or for storage on a storage or Wrapped transport role. This allows large quantities of Schleifschuhbelages be produced without interrupting the manufacturing process.
  • the transport rollers with the wound loop shoe coating can also be passed on directly to the consumer. This can for example simply apply the sanding pad itself to a designated sanding shoe and cut to the desired length.
  • the Schleifschuhbelag has a chamfer, which produces a unilaterally or bilaterally increasing grinding pressure.
  • a chamfer can be provided either on the sliding layer, on the padding material, on the carrier material and / or directly on the sanding pad.
  • the manufacturing mold for the sanding pad must have only a corresponding cross section for this, which allows the shapes of the chamfer or the corresponding counterpart of the cushioning material.
  • the cross section of the recess may be formed, for example, trapezoidal.
  • the present invention presents a new way of making a sanding pad. It should be emphasized in particular that a direct connection of cushioning material with sliding layer and / or carrier material, if required, takes place. Tools such as adhesives or subsequent work are not required in this production process, so that a significant cost reduction occurs.
  • a suitable plastic material for example a multi-component polyurethane foam, in this case a high adhesion is achieved, so that premature tearing of the sliding layer or the cushion layer can be excluded from the carrier material.
  • different padding materials are introduced, which, for example, layer by layer between the carrier material and the sliding layer can be arranged in order to achieve individual grinding results according to customer requirements.
  • FIG. 1 a grinding shoe device 1 is shown, which consists of a sanding pad 2 and a sanding pad cover 3.
  • the sanding shoe device 1 presses a sanding belt 5 driven by rollers 4 flatly onto a workpiece 6, wherein the workpiece 6 and the sanding belt 5 move against each other.
  • the sanding pad 3 is hereby inserted into the sanding shoe 2.
  • To change the sanding pad 3 this is pulled out in a direction perpendicular to the plane of the sanding pad 2, with a new sanding pad 3 is inserted in the same direction in the sanding pad 2.
  • the illustrated abrasive shoe cover 3 consists of a sliding layer 7, a cushioning material 9 and a substrate 12.
  • the Schleifschuhbelag is composed of separately manufactured parts and with the aid of an adhesive layer, the individual parts slip layer 7, padding material 9 and substrate 12 glued.
  • the grinding belt 5 For grinding the workpiece 6, the grinding belt 5 must be guided past the workpiece 6 at a sufficiently high speed.
  • a high pressure of the abrasive shoe 2 is required to press the abrasive belt 5 against the workpiece 6.
  • the combination of high pressure and high speed results in high temperatures at the grinding surface.
  • the high speed continues to generate large tractive forces on the sanding shoe lining 3.
  • the external influences such as pressure, tensile forces and high temperature impair the properties of the adhesive, as used in the prior art for the connection of sliding layer 7, cushioning material 9 and support material 12.
  • a pad shoe 3 is produced with the aid of the padding material 9 using plastic, preferably based on a multi-component polyurethane material, which forms an integral connection between the sliding layer 7, cushioning material 9 and carrier material 12 produced and used as a replacement for conventional Schleifschuhbeläge.
  • FIG. 2 shows an apparatus for using the method according to the invention with a manufacturing mold 10 for producing a Schleifschuhbelages 3 with a sliding layer 7, in the illustrated form with a sliding support 8 and a cushioning material 9.
  • the manufacturing mold 10 is prior to the manufacturing process with a Teflon coating and / or a release wax provided in the not recognizable recess 11 here. This step is necessary to prevent sticking of the plastic used to produce the cushioning material 9.
  • the production mold 10 plastic, preferably based on a polyurethane material, is applied into the recess 11.
  • the sliding layer 7 can be mounted either in the manufacturing mold 10 or on a cover, not shown here.
  • the sliding layer 7 consists for example of graphite.
  • the sliding layer 7 can be introduced into the production mold with the aid of a sliding layer carrier 8.
  • sliding layer carrier 8 offers a fabric tape or a paper strip.
  • Graphite can also be introduced directly onto the cover or into the recess 11 of the production mold 10. In such an approach, the introduced graphite connects directly to the plastic material forming the cushioning material 9.
  • FIG. 3 shows the manufacturing mold 10 and the produced with the help of the manufacturing mold 10 sanding shoe cover 3.
  • the sanding pad 3 can be removed from the recess 11 of the manufacturing mold 10.
  • the sanding pad 3 now consists of a fixedly connected to the padding material 9 sliding layer 7, for example on a Gleit Mrsaki 8.
  • the manufacturing mold 10 can also be used for the production of an endless Schleifschuhbelages 3.
  • the manufacturing mold consists of a lower band with a corresponding recess 11 and a cover, not shown, which covers the recess 11 over a portion of the recess 11.
  • the manufacturing mold 10 can be used in 2 stages first for producing a plastic carrier material and then for foaming the cushion layer.
  • a production mold is used, which is self-contained and frontally provides a supply of necessary components of the Schleifschuhbelages, while exits from the opposite end opening of the finished sanding shoe lining.
  • the portion of the manufacturing mold must be designed so that the plastic for forming the cushioning material 9 has a sufficient residence time within the manufacturing form, so as not to further foam later or change its shape.
  • Schleifschuhbelag 3 After complete curing within the production form of the produced Schleifschuhbelag 3 can be wound on a transport or storage role.
  • the sanding shoe lining can also be produced with a correspondingly dimensioned production mold 10 over a large area for later further processing.
  • FIGS. 4 and 5 show a Schleifschuhbelag 3 with a sliding layer 7, with a sliding layer carrier 8 and a cushioning material 9.
  • the recess 11 may be designed such that the cross section has bevels on the edge to the inlet and / or outlet slopes 17 shown here on Schleifschuhbelag 3 to produce.
  • the inlet or outlet slopes 17 are used for easier entry and exit of the sanding belt 5 at the edge of the Schleifschuhbelages 3. By slight bevels while the tensile force of the abrasive belt 5 is transferred to the entire sanding pad.
  • the sanding pad 3 is applied for introduction into the sanding pad 2 on a carrier material 12 and is fixed by means of fastening means 13.
  • the fastening means 13 may be formed as hooks and eyes or as shown here as webs for receiving the Schleifschuhbelages 3.
  • the sanding shoe lining 3 is introduced under tension between the fastening means 13 and is seated firmly in the carrier material 12 by the expansion forces of the cushioning material 9.
  • FIGS. 6, 7 and 8 show an alternative manufacturing possibility of the Schleifschuhbelages 3 with an integrated carrier material 12.
  • the Schleifschuhbelag thereby comprises a sliding layer 7, a sliding layer 8, a cushioning material 9, provided with inlet or outlet slopes 17 and a substrate 12.
  • an upper and a lower manufacturing mold 14th , 15 used similar to a baking pan.
  • a device according to an endless belt is further conceivable, but this must be cut to lengthen the Schleifschuhbelages 3 and the harder substrate 13.
  • the carrier material 12 can be introduced, for example, from a separate material into the production mold 11, 14, 15 and / or with the aid of additional applicators in the form of spray nozzles, a plastic, preferably based on a polyurethane material, with a high degree of hardness prior to application of the plastic to form the cushioning material 9 in the lower or upper manufacturing mold 14, 15 are introduced.
  • the carrier material 12 may have anchors 16 for attachment to the sanding shoe 2.
  • the anchors 16 serve to transfer the transverse forces generated by the sanding belt 5 to the sanding shoe 2.
  • the finished sanding shoe cover 3 can be removed from the lower and upper production molds 14, 15 and the corresponding upper and lower recesses 18, 19.
  • the finished Schleifschuhbelag 3 can be wound in a continuous production on a transport or storage role.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Laminated Bodies (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP12007356.4A 2011-10-27 2012-10-26 Procédé de fabrication d'une semelle de patin de ponçage Withdrawn EP2586567A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011117032A DE102011117032A1 (de) 2011-10-27 2011-10-27 Verfahren zur Herstellung eines Schleifschuhbelages

Publications (2)

Publication Number Publication Date
EP2586567A2 true EP2586567A2 (fr) 2013-05-01
EP2586567A3 EP2586567A3 (fr) 2015-07-01

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Family Applications (1)

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EP12007356.4A Withdrawn EP2586567A3 (fr) 2011-10-27 2012-10-26 Procédé de fabrication d'une semelle de patin de ponçage

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EP (1) EP2586567A3 (fr)
DE (1) DE102011117032A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104249300A (zh) * 2013-06-25 2014-12-31 苏州意玛斯砂光设备有限公司 一种砂光机磨垫系统
EP3488968A1 (fr) * 2015-12-09 2019-05-29 Steinemann Technology AG Sabot de meulage, dispositif de fixation d'un sabot de meulage, logement de meulage et procédé
CN111230668A (zh) * 2020-03-23 2020-06-05 缙云唐纳机械科技有限公司 一种铝合金型材机械抛光装置
CN115066315A (zh) * 2020-02-05 2022-09-16 株式会社荏原制作所 研磨头及研磨装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20315291U1 (de) 2003-09-16 2004-01-15 Hülsemann, Thomas Schleifschuhvorrichtung
DE202005021781U1 (de) 2005-04-28 2010-02-11 Sia Abrasives Industries Ag Schleifschuhbelag

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10343039A1 (de) * 2003-09-16 2005-04-14 Hülsemann, Thomas Schleifschuhvorrichtung
DE102004057652B3 (de) * 2004-07-27 2006-03-23 Hülsemann, Thomas Schleifschuh
PT1716972E (pt) * 2005-04-28 2010-09-30 Sia Abrasives Ind Ag Revestimento de patim esmerilador
GB0603275D0 (en) * 2006-02-17 2006-03-29 3M Innovative Properties Co An abrasive article for hand-held, or similar, use and preparation thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20315291U1 (de) 2003-09-16 2004-01-15 Hülsemann, Thomas Schleifschuhvorrichtung
DE202005021781U1 (de) 2005-04-28 2010-02-11 Sia Abrasives Industries Ag Schleifschuhbelag

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104249300A (zh) * 2013-06-25 2014-12-31 苏州意玛斯砂光设备有限公司 一种砂光机磨垫系统
EP3488968A1 (fr) * 2015-12-09 2019-05-29 Steinemann Technology AG Sabot de meulage, dispositif de fixation d'un sabot de meulage, logement de meulage et procédé
CN115066315A (zh) * 2020-02-05 2022-09-16 株式会社荏原制作所 研磨头及研磨装置
CN115066315B (zh) * 2020-02-05 2024-09-06 株式会社荏原制作所 研磨头及研磨装置
US12377516B2 (en) 2020-02-05 2025-08-05 Ebara Corporation Polishing head and polishing apparatus
CN111230668A (zh) * 2020-03-23 2020-06-05 缙云唐纳机械科技有限公司 一种铝合金型材机械抛光装置
CN111230668B (zh) * 2020-03-23 2021-04-02 深圳市鼎润实业有限公司 一种铝合金型材机械抛光装置

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DE102011117032A1 (de) 2013-05-02
EP2586567A3 (fr) 2015-07-01

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