JPS609661A - Plural grain size abrasives and plate glass cut surface polishing device - Google Patents

Abstract

PURPOSE:To make a device miniaturizable as a whole, by forming a coniform grinding wheel into plural grain size abrasives setting the upper part to rough grain size and the lower part to fine grain size respectively, while constituting a plate glass cut surface polishing device with these abrasives combined with a table. CONSTITUTION:Plural pieces of coniform double grain size grinding wheels 4, 4' and 4'' are set up at the side edge of a table 1 where a feed truck 2 travels. These grinding wheels are combined as in a-b, c-d and e-f so as to become fine grain size in regular sequency as well as in order to cause the upper part to be rough grain size and the lower part to be fine grain size respectively, whereby the cut surface of glass 12 is polished in the following order that first a rough grain size wheel is used, second a fine grain size wheel and then wheels 4, 4' an 4'' are used in turn. In addition, with wheels 7 and 7', thread surfaces at top and bottom are polished at nearly 45 deg. Thus, an optional degree of polishing for a plate glass cut surface is performable in an extremely accurate and easy manner while reducing the stages of work and, what is more, the number of grinding wheels is reduced owing to this double grain size wheel and a device itself can be miniaturized as a whole.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-grain abrasive material and an apparatus for polishing a cut surface (edge) of a sheet glass using the abrasive material.

Cut surfaces of plate glass require polishing not only for appearance but also to prevent danger. Different degrees. For example, rough finishing involves polishing the cut surface to a non-hazardous degree, intermediate finishing involves polishing with a certain level of aesthetics in mind, and top finishing involves polishing to give an aesthetic appearance (gloss).

As abrasive materials for carrying out the above-mentioned finishing, whetstones made of natural or synthetic materials are well known, and the whetstones will be explained below by way of example.

Now, even if you want to do the rough finishing mentioned above, you will need to use two grindstones of coarse grain size and fine grain size and polish twice, and if you polish twice, the first and second This problem is unavoidable due to the close contact between the grindstone and the cut surface of the glass. Further, in order to carry out semi-finishing and top finishing, the above-mentioned operations are continued using grindstones of finer grain size.

The present invention proposes a space-saving plate glass cutting surface polishing device that can be downsized and space-saving by employing a multi-grain abrasive material that shortens the conventional complicated process described above, and its f'l-. The purpose is to spread the word.

The present invention is a grindstone having a conical shape suitable for being set on the side edge of a table for horizontally placing and moving sheet glass, and whose conical surface rotates in contact with a cutting surface of sheet glass, and whose fL is a cutting surface. Head circle: A whetstone with a conical shape like a yui.The upper part (located on the inside when viewed from above) has a coarse grain, and the lower part (located on the outside when viewed from above) has a fine grain. It is a multi-grain abrasive material made by combining grindstones (
(first invention), a plate glass cut surface polishing apparatus (second invention) which combines the above-mentioned multi-grain size abrasive material and a table; invention).

Further, one embodiment of the present invention will be described below with reference to the drawings.

In the illustrated example, a 1fd table is equipped with a feed cart 2 on the table 1 that can transfer a plate glass placed horizontally, and this feed cart 2 is equipped with a clutch lever.
3 also enables automatic driving. A plurality of conical grindstones 4, 4.4 are arranged in series on the side edge of the table 1, but in the case of a machine dedicated to rough finishing, only a single grindstone 4 may be used, depending on the purpose. All you have to do is set up a number of them.

These whetstones 4, 4, and 4 are ring-shaped fine-grained whetstones mounted on a pedestal 5 connected to a rotating shaft (not shown) as shown in the third figure. A combination of coarse-grained grinding wheels a are attached to form a conical shape, and when viewed as a conical shape, the upper part is the coarse-grained one and the lower part is the fine-grained one.

When a plurality of grindstones are arranged as in the illustrated example, grindstones having finer grain sizes are used in the order of grindstones 4, 4', and 4. That is, the grain size of the grindstone is, for example, a=60, b=80, C-180, d=300.
No., e=400, f=7 Elt buff.

However, if a handle 6 is provided in association with each grinding wheel 4, 4.4 to move the wheel back and forth, it is possible to adjust the force of contact with the cutting surface of the sheet glass, and also to improve the degree of finishing. Depending on the situation, the grinding wheel 4.4 may be appropriately moved back and not used.

Furthermore, after the above-mentioned whetstones 4, 4.4, two upper and lower whetstones 7, 7, which are inclined at approximately 45 degrees and have handles 6 for advancing and retracting on each side, are arranged. It is used for polishing the thread surface of the cut surface of sheet glass, and there is no need to use a double-grained grindstone like the whetstones 4, 4, and 4, and a zero-grained grindstone, such as No. 300, is used.

In the figure, 8 is a rotary shaft fixing lock for fixing the appropriate forward and backward positions of each grinding wheel, 9 is a cooling water cock attached to each grinding wheel, 10 is a grinding wheel cover 11 is a rubber roller for guiding the cutting surface of the sheet glass, and 12 is a lock for fixing the sheet glass. show.

However, to polish the cut surface of sheet glass as a gold finish,
If the grindstones 4, 4, 4, 7, 7 are rotated, the plate glass 12 is placed horizontally on the table 1, and the glass plate 12 is moved by the trolley 2 while being guided by the guiding rubber roller 11, the cut surface is the fifth one.
As shown in the figure, first, the 8th side of the whetstone 4 is ground by 2'', and then the 5th side is ground.Next, the 0th side of the whetstone 4,
The 6th side, the e side and the f side of the whetstone 4 are sequentially finely polished, and the upper and lower thread faces (corners) are polished to approximately 45 degrees by the whetstone 7°7, and then the product is made.

In this case, you can use only the grinding wheel 4 and omit the grinding wheel 4. In the case of a semi-finishing machine, for example, the grinding wheel 4 can be omitted, but the handle 6 for advancing and retracting each grinding wheel eliminates the need for all unnecessary grinding wheels. You can also set it back.

As described above, according to the present invention, it is possible to polish a cut surface of sheet glass to any degree extremely accurately and easily while shortening the process.The double-grained grindstone reduces the number of grindstones, and the entire device can be polished. This makes it possible to downsize and save space.

[Brief explanation of the drawing]

Is the drawing an example of the present invention? Figure 1 is a perspective view of the whole, Figure 2 is a partial plan view, Figure 3 (illustration of the assembly of the grinding stones, Figure 4 is an illustration of the arrangement of the grindstones, Figure 5 is an illustration of the polishing state). It is a diagram. Bar, 4.4, 4, 7.7... Grindstone, 5... Pedestal,
6... Handle for advancing and retracting, 8... Rotating shaft fixing lock.

Claims (9)

[Claims] (1) A multi-grain abrasive material made by combining a grindstone formed into a conical shape such as a truncated cone, with the upper part having a coarse grain size and the lower part having a fine grain size. (2) The multi-grain size abrasive material according to claim 1, wherein the grindstone is a natural abrasive material or a synthetic abrasive material. (3) A table on which the plate glass is horizontally placed and transferred;
The table side edge is equipped with a conical grindstone whose conical surface rotates in contact with the cut surface of the plate glass, and the conical grindstone is composed of a combination of grindstones having a coarse grain size at the upper part and a fine grain size at the lower part. Flat glass cutting surface polishing equipment. (4) An apparatus for polishing a cut surface of a sheet glass according to claim 3, wherein a plurality of the conical grindstones are arranged in series so that the grain size becomes finer in sequence along the glass sheet transfer direction. . (5) The plate glass cut surface polishing apparatus according to claim 4, wherein the conical grindstone is movable forward and backward. (6) a table on which the plate glass is horizontally placed and transferred;
The table side edge is equipped with a conical grindstone whose conical surface rotates in contact with the cut surface of the plate glass, and the conical grindstone is a combination of a grindstone with a coarse grain size at the upper part and a fine grain size at the lower part,
A plate glass cut surface polishing apparatus characterized in that a plate glass cutting surface polishing grindstone is provided behind the grindstone. (7) A plurality of the above-mentioned conical grindstones are arranged in series, and the grindstones are made to have finer grain size sequentially along the sheet glass transfer direction! A plate glass cut surface polishing apparatus according to claim 6. (8) The plate glass cut surface polishing apparatus according to claim 7, wherein each of the grindstones is movable forward and backward. (9) A patent in which the above-mentioned grindstone for cutting the sheet glass and polishing the thread surface is a rotary grindstone, and the contact surface with the sheet glass is set at approximately 45 degrees with respect to the horizontal direction, and there are two upper and lower wheels.