EP3275594A1 - Stützplatteneinheit - Google Patents

Stützplatteneinheit Download PDF

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Publication number
EP3275594A1
EP3275594A1 EP16182024.6A EP16182024A EP3275594A1 EP 3275594 A1 EP3275594 A1 EP 3275594A1 EP 16182024 A EP16182024 A EP 16182024A EP 3275594 A1 EP3275594 A1 EP 3275594A1
Authority
EP
European Patent Office
Prior art keywords
backing plate
hook
plate unit
loop
channel
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Withdrawn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
EP16182024.6A
Other languages
English (en)
French (fr)
Inventor
Guido Valentini
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP16182024.6A priority Critical patent/EP3275594A1/de
Publication of EP3275594A1 publication Critical patent/EP3275594A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/08—Circular back-plates for carrying flexible material

Definitions

  • the invention relates to a backing plate unit for a grinding machine, in particular for a random orbital or dual action or rotary orbital grinding machine, comprising a backing plate having a front side configured to fix an abrasive disc, in particular a sanding paper grinding disc, and a back side configured to be removably attached to the grinding machine and to be driven, wherein the backing plate comprises at least one suction opening that is configured to connect the front side with any type of suction device and preferably penetrates the backing plate, wherein the backing plate comprises a hook-and-loop layer arranged on the front side and configured to fix an abrasive disc by means of a hook-and-loop connection.
  • Such backing plate units are well known in the prior art. Those backing plate units often have a plurality of suction openings arranged in a specific suction opening pattern, wherein the grinding discs, in particular the sanding paper grinding discs are also having suction openings that are arranged in the same pattern as the suction opening pattern of the backing plate unit. Via the suction openings of the backing plate unit and of the grinding disc, abrasive dust can be removed by suction cleaning.
  • a backing plate unit is characterized in that at least one channel is formed in the hook-and-loop layer by partially eliminating or removing hooks and/or loops of the hook-and-loop layer, wherein the channel is fluidly connected to the at least one suction opening of the backing plate. It is particularly preferred if the backing plate is circular, wherein the front side of the backing plate is configured to fix circular sanding paper abrasive discs.
  • the channel is configured to form a suction channel with the hook-and-loop layer of an abrasive disc fixed to the front side of the backing plate.
  • the channel in the hook-and-loop layer is preferably formed as a notch channel which can be closed on the open side by an abrasive disc fixed to the front side of the backing plate to thereby form the suction channel.
  • the channel has a channel width, in particular perpendicular to the rotation axis, of about 1 mm to about 30 mm, preferably of about 1 mm to about 20 mm, more preferably of about 1 mm to about 20 mm, more preferably of about 1 mm to 10 mm. It is also possible that a plurality of channels is provided wherein different channels may have a different channel width.
  • At least one suction opening is arranged concentrically to a middle axis of the backing plate unit. It is also possible that the suction opening is arranged with a certain offset to the middle axis. Moreover, it is possible that a plurality of suction openings is provided in the backing plate that penetrate the backing plate.
  • At least one suction opening is provided that is arranged concentrically to the middle axis of the backing plate unit, it is particularly preferred if at least one channel is provided that extends radially.
  • the radial arrangement or radial direction of the channel is understood to mean that the channel extends from a center to an outside of the backing plate.
  • At least one channel is provided in the hook-and-loop layer that is formed circular and arranged concentrically to a middle axis of the backing plate unit. It is particularly preferred if a plurality of channels is provided that are arranged concentrically to the rotation axis, wherein these channels can be fluidly connected to the suction opening provided in the backing plate via at least one channel that extends radially.
  • At least one channel is provided in the hook-and-loop layer that is arranged parallel to a tangent laid to the backing plate.
  • a plurality of channels is provided that are parallel to each other.
  • At least one channel is provided in the hook-and-loop layer that is arranged perpendicular to the channel arranged parallel to the tangent laid to the backing plate. Even more preferably, also a plurality of channels is provided that are perpendicular to the channels arranged parallel to the tangent laid to the backing plate.
  • the plurality of channels in the hook-and-loop layer is formed in a grid.
  • the hook-and-loop layer comprises hook-and-loop connection hooks wherein abrasive discs have to be chosen that comprise hook-and-loop connection loops configured for mutual connection with the hook-and-loop connection hooks.
  • hook-and-loop connection loops are arranged in the hook-and-loop layer of the backing plate unit wherein abrasive discs have to be chosen that comprise hook-and-loop connection hooks configured for mutual connection with the hook-and-loop connection loops.
  • the hook-and-loop connection hooks form at least 20 % to 30 % of the surface of the hook-and-loop layer.
  • the hook-and-loop connection hooks extend from the backing plate in a height of about 0,3 mm to about 0,6 mm, preferably in a height of about 0,4 mm.
  • the hook-and-loop connection hooks of the hook-and-loop layer are attached to the front side of the backing plate by an intermediate layer comprising polyurethane.
  • a backing plate unit for a grinding machine in particular for a random orbital or dual action or rotary orbital grinding machine, comprising a backing plate having a front side configured to fix an abrasive disc and a back side configured to be removably attached to the grinding machine and to be driven, wherein the backing plate comprises at least one suction opening that is configured to connect the front side with any type of suction device and preferably penetrates the backing plate, wherein the backing plate comprises a hook-and-loop layer arranged on the front side and configured to fix an abrasive disc by means of a hook-and-loop connection.
  • Such a method is characterized by forming at least one channel in the hook-and-loop layer, that is fluidly connected to the suction opening of the backing plate by partially eliminating or removing hook-and-loop connection hooks of the hook-and-loop layer, preferably by means of milling, waterjet cutting or lasing.
  • Figure 1 a sectional view of a backing pad unit 10 according to the invention and of an abrasive disc 12 are shown, wherein Figure 2 depicts a bottom view of a backing pad unit 10 according to a first embodiment and wherein Figure 3 depicts a bottom view of a backing pad unit 10 according to a second embodiment.
  • the backing plate unit 10 is configured to be attached to a rotary grinding machine and comprises a circular backing plate 14 having a front side 16 configured to fix the abrasive disc 12, in particular a sanding paper grinding disc, and a back side configured to be removably attached to a grinding machine and to be driven around a middle axis 18, wherein the backing plate 14 comprises at least one suction opening 20 that penetrates the backing plate 14, wherein the backing plate 14 comprises a hook-and-loop layer 22 arranged on the front side and configured to fix the grinding disc 12 by means of a hook-and-loop connection.
  • the hook-and-loop layer 22 comprises hook-and-loop connection hooks 23 wherein abrasive discs 12 have to be chosen that comprise hook-and-loop connection loops 25 configured for mutual connection with the hook-and-loop connection hooks 23.
  • the hook-and-loop connection hooks 23 extend from the backing plate 14 in a height of about 0,3 mm to about 0,6 mm, preferably in a height of about 0,4 mm.
  • the hook-and-loop connection hooks 23 of the hook-and-loop layer 22 are attached to the front side 16 of the backing plate 14 by an intermediate layer (not shown) comprising polyurethane.
  • a plurality of channels 24 are formed in the hook-and-loop layer and are fluidly connected to the at least one suction opening 20 of the backing plate 14.
  • the at least one suction opening 20 is arranged concentrically to the rotation axis 18. It is also possible that the suction opening 20 is arranged with a certain offset to the rotation axis 18. Moreover, it is possible that a plurality of suction openings 20 are provided in the backing plate 14 that penetrate the backing plate 14.
  • the channels 24 are configured to form suction channels with a hook-and-loop layer 26 of the abrasive disc 12 fixed to the front side of the backing plate. There are essentially no hook-and-loop connection hooks 23 in the area of the channels 24. Accordingly, the channels 24 in the hook-and-loop layer 22 are formed as a notch channels which can be closed on the open side by the grinding disc 12 fixed to the front side 16 of the backing plate 14 to thereby form the suction channels.
  • abrasive dust can be sucked or blown through the channels 24 and through the suction opening 20 wherein clogging of the hook-and-loop connection can be avoided.
  • a fixation of an abrasive disc 12 can be facilitated because suction openings of the grinding disc 12 (not shown) can be more easily superimposed with the channels 24 formed in the hook-and-loop layer 22.
  • the channels have a channel width 26 perpendicular to the rotation axis 18, of about 1 mm to about 30 mm, preferably of about 1 mm to about 20 mm, more preferably of about 1 mm to about 20 mm, more preferably of about 1 mm to 10 mm. It is also possible that a plurality of channels 24 is provided wherein different channels 24 may have a different channel width 26.
  • At least one suction opening 20 is provided that is arranged concentrically to the rotation axis 18, wherein a part of the channels 24 extends radially.
  • the radial arrangement or radial direction of the channels 24 is understood to mean that the channels 24 extend from a center (i.e. from the middle axis 18) to an outside 28 of the backing plate 14.
  • channels 24 are provided in the hook-and-loop layer 22 that are formed circular and arranged concentrically to the middle axis 18. These channels are fluidly connected to the suction opening 20 provided in the backing plate 14 via the channels 24 that extend radially.
  • the channels 24 in the hook-and-loop layer 22 are formed in a grid, wherein the channels 24 are arranged parallel to a tangent laid to the backing plate 14, wherein channels 24 are provided that are arranged perpendicular to the channels 24 arranged parallel to the tangent laid to the backing plate 14.
  • the hook-and-loop connection hooks 23 form at least 20 % to 30 % of the surface of the hook-and-loop layer 22.
  • Figure 4 shows various front views of sections 30, 32, 34, 36, 38, 40 of abrasive discs 12 configured to be fixed to a backing plate unit 10.
  • the abrasive discs 12 according to sections 30, 32, 34, 36, 38, 40 have different hole patterns comprising suction openings 42 with different arrangement and different opening diameter.
  • the backing plate unit 10 it is possible to fix abrasive discs 12 with different hole patterns such as the hole patterns shown in sections 30, 32, 34, 36, 38 and 40 to the backing plate unit 10 such that the suction openings 42 can be superimposed with the channels 24 in the hook-and-loop layer 22 of the backing plate unit 10 in order to efficiently remove abrasive dust without clogging of the hook-and-loop connection between the backing plate unit 10 and the abrasive disc.
  • hole patterns such as the hole patterns shown in sections 30, 32, 34, 36, 38 and 40

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
EP16182024.6A 2016-07-29 2016-07-29 Stützplatteneinheit Withdrawn EP3275594A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16182024.6A EP3275594A1 (de) 2016-07-29 2016-07-29 Stützplatteneinheit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16182024.6A EP3275594A1 (de) 2016-07-29 2016-07-29 Stützplatteneinheit

Publications (1)

Publication Number Publication Date
EP3275594A1 true EP3275594A1 (de) 2018-01-31

Family

ID=56567438

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16182024.6A Withdrawn EP3275594A1 (de) 2016-07-29 2016-07-29 Stützplatteneinheit

Country Status (1)

Country Link
EP (1) EP3275594A1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1126136A (en) * 1966-06-20 1968-09-05 American Velcro Inc Improvements in abrasive pad holding device
EP1380388A1 (de) * 2002-07-09 2004-01-14 YKK Europe Limited Schleifwerkzeughaltevorrichtung
WO2008115663A1 (en) * 2007-03-20 2008-09-25 3M Innovative Properties Company Abrasive article and method of making and using the same
US20090191800A1 (en) * 2008-01-30 2009-07-30 3M Innovative Properties Company Method, system, and apparatus for modifying surfaces
WO2011021087A1 (en) * 2009-08-17 2011-02-24 Cemom-Moatti S.A. Support for abrasive elements in sheet form for tools or machine tools
US20110159794A1 (en) * 2009-12-29 2011-06-30 Saint-Gobain Abrasives, Inc. Abrasive article with open structure
EP2422931A1 (de) * 2010-08-31 2012-02-29 Jöst GmbH Universelle Schleiftellereinheit mit Absaughaube für eine Rotationsschleifmaschine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1126136A (en) * 1966-06-20 1968-09-05 American Velcro Inc Improvements in abrasive pad holding device
EP1380388A1 (de) * 2002-07-09 2004-01-14 YKK Europe Limited Schleifwerkzeughaltevorrichtung
WO2008115663A1 (en) * 2007-03-20 2008-09-25 3M Innovative Properties Company Abrasive article and method of making and using the same
US20090191800A1 (en) * 2008-01-30 2009-07-30 3M Innovative Properties Company Method, system, and apparatus for modifying surfaces
WO2011021087A1 (en) * 2009-08-17 2011-02-24 Cemom-Moatti S.A. Support for abrasive elements in sheet form for tools or machine tools
US20110159794A1 (en) * 2009-12-29 2011-06-30 Saint-Gobain Abrasives, Inc. Abrasive article with open structure
EP2422931A1 (de) * 2010-08-31 2012-02-29 Jöst GmbH Universelle Schleiftellereinheit mit Absaughaube für eine Rotationsschleifmaschine
US20120315833A1 (en) 2010-08-31 2012-12-13 Joest Peter Backing plate unit for a rotary grinding machine

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