JP3202507U - Method for correcting a flat glass surface and apparatus for carrying out this method - Google Patents

Abstract

An apparatus for processing a flat glass surface to a different degree of opacity or correcting a sandblasted glass surface is provided. An apparatus for correcting a flat glass surface (5), means for supplying water for cooling and washing the glass surface (5), and a rotating brush for fogging the glass surface (5). And artificial diamond abrasive grains provided on the lump of plastic yarn 3. Coarse abrasive grains of the artificial diamond provided in the lump of plastic thread 3 of the rotating brush for first frosting the glass surface 5 and for further frosting and polishing the glass surface 5 , And smaller abrasive grains of the artificial diamond provided in the lump of plastic yarn 3 of the rotating brush. [Selection] Figure 4

Description

  The present invention solves the problem of modifying a flat glass surface to a different degree of opacity, or modifying a sandblasted glass surface aimed at preserving a quality that is easily cleaned.

  To date, well-known techniques for fogging flat glass can be classified as either physical or chemical. In the first case, a technique called sandblasting is common. The abrasive is accelerated by a pressurized air stream and thrown vertically onto the surface of the glass. During the collision with the glass surface, the abrasive grain cuts the surface of the glass at the location of the collision. Some particles bounce off the glass surface, and some move on the glass surface. The abrasive fogs the glass by a combination of braking, taking off and grinding of the face layer. The use of abrasive grains begins to fill the funnel and is used further. Part of the finely divided glass powder and the divided abrasive grains are sucked from the place of sandblasting. The most common material from which the abrasive is made is either corundum / Al2O3 / or silicon monoxide / SiO / at a particle size of 60-180 mesh. The visual and functional characteristics of the sandblasted surface are largely determined by the size, speed and angle of impact of the abrasive grains used and the shape of the grains. For example, a glass surface sandblasted with a 90 mesh grain brown corundum runs perpendicular to the glass surface. Therefore, it contains many face divisions and deep cracks in the direction of particle collision at the face. The glass surface is sharp, fragile and filled with brittlely divided glass particles and sandblasted material. The surface quality is low. Surface splitting results in a large absorbent surface with the ability to absorb moisture, oil and shape stains that cannot be cleaned. Frangible surfaces tend to physical damage leading to glass marks that cannot be removed. Sandblasting removes the glass face layer to a depth of 1 / 100th of a millimeter. The depth of surface splitting and thus the weakening of the glass depends on the size of the abrasive used and the air pressure. Surface splitting can complicate tempering of the glass. The energy efficiency of sandblasted glass is low. The chemical haze method uses hydrofluoric acid that reacts with different components of the molten glass to produce a number of fluorides and silicofluorides. Insoluble materials and less soluble salts crystallize on the glass surface. Crystals create a very uniform and fragile structure on the glass surface, such as a glossy glass through the dispersion of light. The chemically fogged glass surface has no divisions in it. It is easy to clean. The surface structure is softer than the glass at the bottom and easily damaged mechanically. The disadvantage of chemical haze is that aggressive and dangerous compounds are used during the process.

  The above disadvantages are described by the present invention, which means that the glass surface with the artificial diamond abrasive grains located in the lump of plastic yarn of the rotating brush is clouded while the glass surface is cooled with water and washed. It is removed by modifying the glass surface so that. The glossy surface of the smooth glass plate is initially clouded by using artificial diamond coarse abrasive grains located in the plastic thread lump of the rotating brush, and this surface is the smaller grain size abrasive located in the plastic thread of the rotating brush. By using the grain, it is then clouded and polished. Another possibility is to modify the sandblasted glass surface with the artificial diamond abrasive grains located in the plastic thread mass of the rotating brush. The gist of the device used to modify the flat glass surface consists of at least one rotating brush which is laid down in a fixed or movable arrangement on the glass plate to be modified. The rotating brush has an abrasive plastic thread with artificial diamond abrasive grains. Further, the rotating brush is located on either the portal cart or the brushing mill. Further, the gist of the present invention is that there are artificial diamond abrasive grains having the same or different particle size of the plastic yarn. The glass plate can be attached by a suction cup or placed on a moving belt.

  It is possible to fog or modify the glass, either glossy or already sandblasted, by the method of brushing. Applying the brush produces a dense network of shallow divisions that appear as matte surfaces due to light dispersion. Glass modified by brushing has better functional properties than sandblasted or shochu glass. This is due to the surface division generated by brushing. The decisive effect of the final visual appearance of the glass is characterized by the contact of the abrasive with the glass surface and the trajectory of the abrasive on the glass. The hardness of the abrasive is also very important. With the use of artificial diamonds, the glass surface becomes crushed rather than crushed and broken and scabbed. Clam-shaped divisions are shallow and more or less in the direction parallel to the plane. The range between them is covered with a dense network of smooth traces made by flat brushes. This structure due to the dispersion of light makes the glass surface an evenly matt, conformable and smooth glossy appearance. The glass surface is not hard and brittle. The surface hardness of polished glass is the same as that of the base material. This is very different from scab glass where the face layer is softer than the base layer. The hard surface allows the use of any common adhesive. Since the split from brushing is shallow and smooth and the glass has not been severely damaged, it can be further polished before or even after thermal tempering. Although this surface structure promotes large dispersion of light, it is a tiny absorber in the liquid situation. This means that this matte glass can be cleaned very easily. This is a very important property when matt glass is used on the inside and outside. It is even possible to polish the full length of the glass or the glass product before it is finished. It is possible to polish glass that is thicker than 3 millimeters. When polishing sandblasted glass surfaces, it is possible to create a partially matt and partially transparent surface by using a cover foil or to create different shades of matt glass. This method can produce a replica of past ornaments or use the glass for different technical solutions. When comparing the properties of transparently polished glass with polished glass that has been sandblasted before polishing, transparently polished glass is of much better quality. It is less disturbed, the division is shallower, the glass is smoother, has fewer absorbent surfaces, is easier to clean and is made in one machine in an energetically advantageous process. Processing matte glass by polishing is a good alternative to the industrial process of cauterizing glass. The polishing technique is energetically advantageous, environmentally friendly and quiet, producing no dust and no waste. The machine does not use aggressive and harmful materials, has no disturbing effects, can be part of the production line or works separately in most types of factories.

The method of correcting a flat glass surface and the apparatus for carrying out this method are further illustrated in the accompanying drawings, and the images are shown below.
It is a photograph of a brush with a single grain size, 4 mm thick, transparent, polished, matte float glass magnified 1000 times. 4 is a 1000x magnification of a transparent, polished, matte float glass with two different particle sizes of a brush and a thickness of 4 mm. A photograph of a 4x thick transparent, polished, matte glass magnified 1000 times, already sandblasted and then clouded by polishing. 1 is a block diagram of an apparatus for processing polished glass with an operable brush device. It is detail drawing of a brush apparatus. It is detail drawing of the brush which shows the direction of operation | movement. 1 is a block diagram of an apparatus for processing polished glass with an operable glass plate. FIG.

  Fogging the glass consists of two steps. The first step is roughening, i.e. eroding the hard and smooth surface layer of the glass by means of polishing. The second step is to polish this surface layer to the required quality of surface roughness and transparency also done by polishing. Polishing the glass works by means of a rotating brush having a plastic thread with artificial diamond abrasive grains. The brush thread is already aligned with the axis of rotation. The glass surface is cooled and washed with water. Centrifugal force stretches the plastic thread perpendicular to the axis of rotation. The abrasive grains in the yarn move in an annular shape toward the tangential plane of the glass. As the rotating brush is moved closer to the glass surface, the abrasive collides with the glass surface and moves it on a short straight line. The kinetic energy of the abrasive grains must be large enough for the abrasive grains to erode the glass surface layer. This amount of energy is given as the product of an agglomerate and a mass of plastic yarn that increases with the circumferential speed of the yarn where the abrasive touches the glass. When particles with a size of 80 mesh and a circumferential velocity moving at 20 m / s and a larger collision with the glass surface, it erodes the hard and smooth glass layer, creating many clam-shaped divisions. The division has a maximum depth of 0.005 mm and a length of 0.02 mm. The thickness of the removed material is 1 / 1000th of a millimeter. Other particles do some frosting and leave a network of small parallel slits lined up in a plane. When the face layer is eroded, it is faster to remove more material. In FIG. 1, there is a photograph in which the surface of a 4 mm thick “float” type transparent glass that has been fogged by polishing is magnified 1000 times. The artificial diamond used for the brush had a particle size of 80 mesh, and the population of abrasive grains in the plastic yarn mass was 24%. The yarn had a diameter of 0.2 mm. A small network of small areas is clearly visible in the photograph. The quality of the surface change depends on the grain size of the abrasive used. Polishing the surface modified by this process must be further polished by using smaller sized particles incorporated into the brush thread. By this method we remove unstable and sharp pieces of glass from the glass surface. As a result, the surface is only covered by shallow divisions. The area between them is flat and covered with a uniform network of smooth traces made by polishing. The field of view through which the glass passes has no gloss on the surface, is smooth and glossy, has a smooth touch and has great functional properties. FIG. 2 shows a photograph of the surface of a 4 mm thick “float” type transparent glass that has become fogged by polishing, magnified 1000 times. The plastic yarn mass is first polished with an artificial diamond of 80 mesh size with a population of 24% of the abrasive grains. Secondly, it is polished with a 300-mesh artificial diamond having a population of 24% of the abrasive grains in the plastic yarn mass. All yarns had a diameter of 0.2 mm. It is possible to obtain different mechanical and optical surface properties by combining different particle sizes in the yarn.

  The method for modifying already sandblasted glass is similar. A rotating brush with abrasives made of artificial diamond laid in a lump of yarn polishes the sandblasted glass surface. Polishing sandblasted glass with an abrasive brush removes most surface defects and fragile parts. The deepest dents are most prominent due to the coarsest pieces of corundum used for sandblasting. The area divisions made by polishing are significantly shallower than those made by uniform lining and sandblasting. It is possible to obtain different degrees of transparency and shade of a matte surface by combining the abrasive grain size and polishing strength. On the glass surface modified in this way, the amount of surface cracks is reduced and it is the surface absorption. This means that it is easier to clean the glass. By removing unstable parts, the glass becomes less sensitive to shaving. All this looks good in FIG. 3 which can be seen magnified 1000 times the surface of a “float” type transparent glass with a thickness of 4 mm, sandblasted using a 90 mesh grain brown corundum. The brush used an artificial diamond with a particle size of 1500 mesh with a 12% population of thread lump abrasive.

  When polishing sandblasted glass, the hard and smooth glass face layer is already corroded, so the energy required to modify the face is lower and it is possible to use the lower circumferential speed of the brush . This possibility is made possible by using a cover foil. The abrasive yarn works in a sandblasted area that is fragile, but the cover foil remains intact and protects the area below it due to its elasticity. By this method it is possible to produce transparent and matte parts of the surface or even different degrees of particle size depending on the strength of polishing.

  The device for correcting the glass surface can be vertical or horizontal (FIG. 4). The vertical frame 8 has a glass plate 5 fixed by a suction cup 6. An arm of the frame 8 has a glass plate 5 fixed by a suction cup 6. The arm of the frame 8 has a portal cart 4 in which a rough brush 10 and a polishing brush 9 are laid down. Both brushes have artificial diamond abrasive grains located on the abrasive thread 3. Both brushes are connected by a geared belt to the shaft of the electric motor 2 so that they rotate simultaneously (FIG. 5). The portal cart 4 moves horizontally x and vertically y at a brush controlled speed. The portal cart 4 also has a water inlet 1 at the bottom of the frame 8 where the collection tank 7 is located.

  The rough brush 10 moves first and is hard and removes the smooth surface layer so that the polishing brush 9 subsequently polishes the glass. After each single trajectory on the glass, the cart 4 with the brushes 9 and 10 moves to an area of the glass plate 5 that has not yet been polished. This process ends when the entire glass has been polished. After being regenerated, the water is polished and supplied to the region that flows over the glass and flows to the recovery tank 7.

  Alternatively, the glass surface can be polished with a single brush. There is only one brush in the portal cart 4. The brush is the same in the last case except for the abrasive yarn. The first half of the brush has a coarse thread. This means, for example, that the population in yarns and yarn masses with artificial meshes of 80 mesh size is 24%. The second half of the brush has abrasive threads there. This means, for example, that the population in a yarn and a lump of yarn with an artificial diamond with a particle size of 180 mesh is 24%. The brush moves on the clear glass first, with a rough cut to remove the outer layer of glass. Immediately after, the polishing part of the brush polishes these roughened areas. The end result and quality are then determined by the ratio of these two parts as well as the grain size of the abrasive part of the brush.

  Another version of the device is that the brush 9, 10 is the same width as the glass plate 5, and is placed on the brushing mill 12 statically (FIG. 7) and the operable glass plate 5 is laid down on the moving belt 11 ing. This setting can also work in other ways which means that the brushing mill 12 moves with a brush and the glass plate 5 does not move.

  The apparatus works in such a way that the roughing brush 10 begins to work and then the polishing brush 9 follows. The normal grain size of abrasive glass is between 60-90 mesh for roughing and the polishing grain size between 300-1500 mesh is used in a population of 24%. The thread is twisted for better elasticity. The yarn is 0.2 mm in diameter and 60 mm long. Appropriate circumferential speeds for discs for polishing transparent glass are 20 m / s or more, and less for sandblasted glass. The disc is moved in the plane perpendicular to the glass to the axis of rotation at a speed between 0.2 and 1.5 m / min. There are many cooling water supplies to the polished place. Cooling water in combination with the mechanical work of the polishing yarn cleans the glass surface from the fine dust generated in the above process. Due to the plasticity of the yarn, the surface is not soiled in any significant way with little roughing.

Depending on the applicability of the device and the modified glass plate mold, the glass polishing machine can be made in step size. Matte glass is very commonly used today in the construction, construction and furniture industries.

Claims (10)

  An apparatus for correcting the surface of a flat glass, the glass surface being frosted with artificial diamond abrasive grains located in a lump of plastic thread of a rotating brush while the glass surface is cooled with water and washed. A device, characterized in that   The glossy surface of the glass plate is first frosted by using a coarse abrasive grain of artificial diamond located in the plastic yarn lump of the rotating brush, which surface is then smaller than that located in the plastic yarn lump of the rotating brush. The apparatus according to claim 1, wherein the apparatus is frosted and polished by using abrasive grains having a particle size.   2. A device according to claim 1, characterized in that the roughened glass surface is frosted with artificial diamond abrasive grains located in the plastic thread mass of the rotating brush.   A device for correcting the surface of a flat glass, assembled with at least one rotating brush (9, 10) laid down in a fixed or movable arrangement on the modified glass plate (5). Furthermore, the brush (9, 10) comprises an abrasive plastic thread (3) provided with artificial diamond abrasive grains.   Device according to claim 4, characterized in that the rotating brush (9, 10) is laid down in a portal cart (4).   Device according to claim 4, characterized in that the rotating brush (9, 10) is laid down on a brushing mill (12).   7. A device according to any one of claims 4 to 6, characterized in that the abrasive plastic thread (3) contains artificial diamond abrasive grains of equal grain size.   7. A device according to any one of claims 4 to 6, characterized in that the abrasive plastic thread (3) comprises artificial diamond abrasive grains of various particle sizes.   6. A device according to any one of claims 4 and 5, characterized in that the glass plate (5) is fixed to the frame (1) of the device by being attached by a suction cup (6).   7. A device according to any one of claims 4 and 6, characterized in that the glass plate (5) is fixed on a moving belt (11) laid down in a brushing mill (12).

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