DE20305995U1 - Polishing wheel with upper side and underside, middle polishing area enclosed by edge part, round holes arranged in ring - Google Patents

Abstract

The upper side (3) of the foam polishing wheel (1) has a middle enclosed polishing area (7) surrounded by an edge-part (6) which has adjacent round holes (5) freely opening into the upper side of the wheel and arranged in at least one ring concentric with the wheel. The holes run at right angles to the wheel's upper side towards the underside (4).

Description

Company Ewald Schaumstoffe GmbH & Co. KG, Schwiepinghook 6b, 48683 Ahaus-Alstätte

"Polishing disc"
5

The innovation concerns a polishing wheel according to the preamble of the main claim.

Polishing discs are usually made of soft materials, especially foam, or at least the top of the polishing disc, which is the effective surface during the polishing process, is made of a soft material in order not to damage the surface to be polished, e.g. a painted surface of a vehicle, but only to polish it, so that the painted surface subsequently has a particularly good appearance.

"refreshed". The polishing disc is connected at its back to a device that drives the polishing disc in rotation, in particular a polishing device.

During polishing, a gap is created between the polishing disc and the

A polish is used on the surface to be polished, whereby due to the rapid rotation of the polishing disc during the polishing process, the polish is often thrown away from the polishing disc and is therefore no longer available for the actual polishing process and the environment or the surface is contaminated.

the polisher and also leads to an undesirable high consumption of polish. If too little polish is used to limit the polish consumption, frequent re-application of polish to the surface area to be polished is necessary, which makes the process of

Polishing must be interrupted and therefore the time for the entire polishing process is increased.

The innovation is based on the task of designing a polishing wheel in such a way that the amount of polish used

can be reduced during the polishing process and excessive ejection of the polish during polishing is prevented.

This task underlying the innovation is solved by the teaching of the characterizing part of the main claim.

solves.

In other words, a polishing disc is proposed whose upper side, which acts as a polishing surface, is provided with recesses in its edge area in order to polish the

as the polishing disc rotates, it moves from its centre to the outer edge areas.

Advantageous embodiments of the innovation are explained in the claims below.

In an advantageous embodiment, the receiving holes in the upper side of the polishing disc are round in order to enable easy production of the same.

In an advantageous embodiment, the receiving holes arranged next to one another form a ring which is concentric with the polishing disk. It is also possible for the receiving holes to form several rings which are arranged concentrically.

In an advantageous embodiment, the receiving holes are formed at right angles to the upper side in the direction of the underside of the polishing disc.
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In an advantageous embodiment, the receiving holes can have a depth that extends over more than half the polishing disc thickness.

In an advantageous embodiment, the polishing disc is made of foam

material to enable cost-effective production

• t · ·

the polishing disc and to be able to take advantage of the good polishing properties of foam.

In an advantageous embodiment of the innovation, the inclusion

holes are elongated, with their long side parallel to the outer edge of the polishing disc to prevent excessive discharge of polish to the outer edge during rotation of the polishing disc.

An embodiment of the innovation is shown in the drawing, wherein a polishing disk 1 consists essentially of a round piece of foam 2 with an upper side 3, which faces the object to be polished and acts as a polishing surface, and with a lower side 4, which in this embodiment

example, is equipped with a fleece or a Velcro material in order to be able to connect the polishing disc to a polishing device, on which a counterpart to the underside of the polishing disc 1 equipped with a Velcro material is provided, so that by simply pressing

the polishing disc 1 can be attached to the polishing device.

On its upper side 3, the polishing disk 1 has several receiving holes 5, whereby in this embodiment sixteen

Receiving holes 5 are provided, which are arranged next to one another and form a ring which is formed concentrically in the upper side 3 of the polishing disk 1.

The receiving holes 5 are in an edge area 6 of the upper

side 3, while the middle region of the upper side 3 as a polishing region 7 is not provided with recesses in this embodiment and is therefore available in its entire surface for the polishing work.

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The receiving holes 5 are open towards the top of the polishing disk, and in this embodiment the receiving holes are 20 mm deep, while the polishing disk 1 is 25 mm thick in total, so that the receiving holes 5 do not extend through the entire polishing disk 1. This has the advantage that although picked up polishing material can be picked up in the area of the receiving holes 5 and can accumulate and be slowly released again during the further polishing process, it cannot escape through the underside 4 of the polishing disk 1.

Of course, the receiving holes 5 can also have other geometric shapes, such as oval, or they can be designed as an elongated hole, but it has proven advantageous if these elongated shapes of

receiving holes 5 are arranged with their long side substantially parallel to the outer edge of the polishing disk 1 in order to avoid premature release of the polish received in the holes when the polishing disk rotates in the direction of the edge.

In this embodiment, the receiving holes 5 are arranged only in a ring which is arranged concentrically on the upper side 3 of the polishing disk 1, i.e. all receiving holes 5 have the same distance from the outer edge

of the polishing disc. It is also possible to arrange the receiving holes 5 at different distances from the outer edge of the polishing disc 1, so that several "rings" of receiving holes are created. Between the receiving holes 5 and the outer edge of the polishing disc 1 there is a po

polishing area 8, which is at the same height level as the middle polishing area 7 and can be processed with the polishing substrate released from the receiving holes.

If the proposed polishing disc is used to polish a surface

is to be polished, one can proceed in such a way that

Polish is applied to the middle polishing area 7 of the polishing disc 1. The polishing disc 1 is then held against the surface to be polished and the polishing device is started, causing the polishing disc 1 to rotate. The polish applied to the polishing area 7

is moved by the centrifugal force in the direction of the outer edges of the polishing disk 1 and, in addition, a sideways movement of the polishing device and the associated polishing disk 1 is usually also carried out by the polisher. In the proposed polishing disk, the material in the outer edge

Any polish migrating from the polishing disc 1 to the other areas is initially caught by the receiving holes 5 and then slowly and controlledly released again, so that excessive throwing off of polish is prevented when the polishing disc 1 rotates.

Tests have shown that the temperature of the upper side 3 of the polishing disk 1 can also be reduced by using the proposed receiving holes 5 in the edge regions of the upper side 3.

Claims (8)

1. Polishing disk with an upper side which has a polishing surface and with an underside which has at least one fastening means which can be connected to a rotation device, characterized by the upper side ( 3 ) of the polishing disk ( 1 ), which has a substantially closed, central polishing region ( 7 ) and an edge region ( 6 ) surrounding the polishing region ( 7 ), which is provided with receiving holes ( 5 ) arranged next to one another, which are designed to open freely to the upper side of the polishing disk ( 1 ). 2. Polishing disc according to claim 1, characterized by the receiving holes ( 5 ) which are round. 3. Polishing disc according to claim 1 or 2, characterized by the receiving holes ( 5 ) which are arranged to form at least one ring arranged concentrically to the polishing disc ( 1 ). 4. Polishing disc according to one of the preceding claims, characterized by the receiving holes ( 5 ) which are formed at right angles to the upper side ( 3 ) of the polishing disc ( 1 ) in the direction of the lower side ( 4 ). 5. Polishing disc according to one of the preceding claims, characterized by the receiving holes ( 5 ) which are formed extending over a large part of the thickness of the polishing disc ( 1 ). 6. Polishing disc according to one of the preceding claims, characterized by the polishing disc ( 1 ) made of foam. 7. Polishing disc according to one of the preceding claims 1, 3 to 6, characterized by the elongated receiving holes ( 5 ) whose long side is arranged parallel to the outer edge of the polishing disc. 8. Polishing disc according to one of the preceding claims, characterized by the receiving holes ( 5 ) which are arranged between the central polishing region ( 7 ) and a polishing region ( 8 ) close to the edge.