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
  • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
  • B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
• • 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
  • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
  • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
  • B24B23/026—Fluid driven
• • 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
  • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
  • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
  • B24B23/028—Angle tools
• • 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
  • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
  • B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B24—GRINDING; POLISHING
  • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
  • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
  • B24D7/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with cooling provisions

Definitions

• the technical field of the invention relates to polishing or polishing apparatus, in particular used for surfaces, on which was deposited a paint film. These devices are particularly suitable for the automotive industry, during the polishing phase involved after paint deposition operations. Generally, the polishing operation generates a series of local heating, located on both the polisher and the surface to be polished, causing degradation of the polishing foam and the surface condition of the piece to be polished. More specifically, the invention therefore relates to a polisher equipped with a cooling system.
• polishing apparatus and “polisher” are equivalent.
• the polishers exist and have already been the subject of patents.
• the compressed air arrives through a connection zone, then the flow is divided in two: a first port is used to feed the air motor and a second port allows to bring a flow of air to the center of the polishing disc.
• This type of arrangement makes it possible to cool the tool and the workpiece.
• the polishing apparatus according to the invention are also provided with a cooling system for cooling the median polishing and the surface to be polished, said system consisting of puncturing air exhaust of said apparatus , and to reinject it at the level of the head of the polisher including the median of filtering.
• This cooling system is based on an existing energy source, resulting in no additional cost related to the implementation of a specific engine, dedicated to this function. In addition, this system does not generate additional space, related to the development of a particular cooling circuit, since a simple air deflection pipe, internal to the polishing apparatus, is sufficient. Finally, the polishing apparatus according to the invention, are configured to ensure homogeneous cooling of the median polishing, through a multi-source air circulation.
• the median polishing is the material located at the end of the polisher, which will directly ensure the polishing function against the surface to be treated.
• the present invention relates to a manual polishing apparatus, having a handle comprising an air supply connector and an air exhaust member, and a head comprising a median polishing, said apparatus comprising means for conveying air between the exhaust member and said head, in the form of an integrated duct to the handle, so as to use the exhaust air to cool said head as well as the external surface to be polished.
• the main characteristic of a polishing apparatus according to the invention is that the exhaust air is diffused by a plurality of nozzles through the median polishing. In this way, the cooling of the median polishing is effective, complete and homogeneous, without leaving warm zones.
• the polishing apparatus according to the invention has improved performance, thanks to an increased quality of the cooling of its median polishing, this quality ensuring a longer life, delaying wear.
• the head comprises a skirt, and the pipe opens into the head, to the right of the skirt.
• the median polishing is in the form of a cylinder, crossed, along its length, by a plurality of channels, the exhaust air from the pipe, passing through said median by said channels.
• the number of these channels will condition, in part, the cooling quality of said median polishing.
• the plate is in the form of a solid disk, crossed, along its length, by a plurality of parallel channels between them, and whose longitudinal axes are parallel to the axis of rotation of said plate , the median polishing being fixed on the plateau, so that the channels of the plateau and those of said median, are parallel to each other and in continuity with one another.
• the exhaust air from the pipe integrated in the handle will first invade the channels of the plateau, before crossing the channels of the median polishing, and then be blown on the surface to be treated.
• the skirt is cylindrical in shape and has two concentric walls, the outer wall having an opening for conveying air from the pipe into the space between the two walls, and the inner wall has a plurality of holes for radially diffusing air within the skirt. In this way, the air diffused radially inside the skirt, penetrates inside the channels of the plate, then inside the channels of the median filtering.
• the holes of the inner wall are aligned with each other, and are equitably distributed around a circle.
• Such a configuration allows a homogeneous distribution of the arrival of air in the skirt.
• the two walls are interconnected at their free end by a perforated annular wall.
• the annular wall comprises a plurality of holes, equitably distributed over its length.
• the holes of this annular wall allow an air outlet in a direction parallel to the axis of rotation of the skirt.
• the median is a polishing foam.
• the glossing foam is particularly suitable for the treatment of surfaces covered by a paint film.
• the axis of rotation of the plate, in the skirt is offset relative to its axis of revolution, so that the movement of said plate is elliptical.
• the invention also relates to a median polishing for a polishing apparatus according to the invention, and whose main feature is that it is crossed by a plurality of channels.
• the median polishing is in the form of a cylinder, crossed by a plurality of channels, parallel to each other, and parallel to the axis of revolution of said cylinder. These are through channels, par par, the median, so as to maintain a permanent air flow, during the time of use of the device.
• the polishing apparatus Compared to already existing polishers, the polishing apparatus according to the invention have the advantage of having an additional function, which is the cooling of its head and the surface to be polished, while remaining clutter constant. In addition, they have the advantage of being easily designed because they have no major structural difference with those already existing, if not an arrangement of the inner part of the handle, to redirect the exhaust air to the head of the polishing machine. Finally, they have the advantage of having a homogeneously cooled polishing median, thanks to an innovative configuration of the air circulation in the head of the polishing apparatus.
• Figure 1 is a perspective view of a polishing apparatus according to the invention.
• Figure 2 is a sectional view of the head of a polishing apparatus according to the invention.
• a polishing apparatus 1 comprises a handle 2 extended by a head 3, these two elements being arranged at 90 ° from each other.
• the handle generally has an elongated cylindrical shape, with small surface reliefs, so as to facilitate its grip.
• the head 3 comprises, in particular, a cylindrical skirt 4 provided with a double wall, a plate 5 and a median 6 filter consisting of a filtering foam.
• the skirt 4 has, therefore, a flat bottom 7, an inner wall 8 and a concentric outer wall 9.
• the inner wall 8 has a plurality of holes 10, aligned with each other, and equitably distributed around the periphery of this inner wall 8.
• the outer wall 9 has an opening 20, into which a pipe 11, internal to the handle 2, and originating at the exhaust air of said handle 2, so as to reroute exhaust air to the inside of the skirt 4, which is particularly located the plate 5 and the median 6 polishing.
• the inner 8 and outer 9 walls originate on the flat bottom 7 of the skirt 4, and have the same length, this length representing the dimension of said skirt 4 taken along its axis of rotation.
• the plate 5 is in the form of a chamfered cylindrical disc. In other words, this plate 5 has two concentric circular surfaces 15, 16, of different diameters, and whose circumferences are interconnected linearly, in a sectional view.
• the axis of rotation of the plate 5, which is in the central position in the skirt 4, is found in a position offset from its center, so that said plate 5 adopts an elliptical movement when it is rotated.
• This movement can also be described as planetary or orbital.
• Said plate 5 is pierced with six longitudinal channels 17, parallel to said axis of rotation, these six channels 17 being equitably distributed around a circle.
• the filtering foam 6, which is supported by the plate 5, is cylindrical, and has a diameter substantially equal to that of the largest circular surface 16 of the plate 5.
• This filtering foam 6, whose movement is guided by that of the plateau 5, when it is rotated, is pierced with six longitudinal channels 18, parallel to its axis of revolution, these six channels 18 are equitably distributed around a circle.
• the foam 6 is implanted on the plate 5, so that the channels 18 of said foam 6 are in the extension of the channels 17 of said plate 5.
• the plate 5 is positioned on the head 6 of the polisher 1, so as to emerge from the skirt 4.
• the mode of operation of a polishing apparatus 1 according to the invention is as follows. The operator seizes the polisher 1 by the handle 2, and approaches the head 3 of said polisher 1, of the surface to be treated. It actuates the trigger to start the device 1. The plate 5 and the filtering foam 6 begin to rotate in contact with the surface to be polished, while the exhaust air is conveyed to the skirt 4, by through a pipe 11, formed inside the handle 2.
• the air is then blown inside the skirt 4, via the holes 10 of its inner wall 8, and to the surface to be treated, via the holes 13 of the annular wall 12. It is also blown inside the plate 5 and the filtering foam 6, via the longitudinal channels 17, 18 which pass through them. In this way, the surface to be polished is cooled, as well as the filtering foam 6 and the plate 5 which supports it, this cooling being able to result in a temperature drop close to 25 ° C. on these various elements, and, advantageously, by a temperature drop of 23 ° C precisely.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
• Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Applications Claiming Priority (2)

Publications (2)

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Family Cites Families (9)

• 2009
  • 2009-12-16 FR FR0959054A patent/FR2953750B1/fr active Active
• 2010
  • 2010-11-22 WO PCT/FR2010/052474 patent/WO2011073547A1/fr active Application Filing
  • 2010-11-22 EP EP10805258.0A patent/EP2512734B1/de active Active
  • 2010-11-22 ES ES10805258T patent/ES2835736T3/es active Active

Non-Patent Citations (1)

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