KR102274705B1 - End-section processing device and end-section processing method for glass plate - Google Patents

Abstract

The edge processing apparatus 10 of the glass plate which concerns on this invention gives predetermined processing to the support stand 11 which supports the glass plate G, and the edge part Ge of the glass plate G of the state supported by the support stand 11. It is provided with the processing part 13 for carrying out, and the cover part 16 which covers the processing part 13. As shown in FIG. The support 11 has the 1st support part 20 which supports the center-side area|region G1 of the glass plate G, and the 2nd support part 21 which supports the end-side area|region G2 of the glass plate G. The thickness dimension ts of the 2nd support part 21 is smaller than that of the 1st support part 20, and the opening part 19 of the cover part 16 in the state which supported the end-side area|region G2 of the glass plate G. ) is set to a size that can pass through.

Description

The end processing apparatus and the end processing method of a glass plate {END-SECTION PROCESSING DEVICE AND END-SECTION PROCESSING METHOD FOR GLASS PLATE}

The present invention relates to an end processing apparatus and an end processing method for a glass plate.

In recent years, flat panel displays, such as a liquid crystal display, a plasma display, an organic electroluminescent display, and a field emission display, have spread instead of the CRT-type display which has conventionally spread from a viewpoint of space saving. And in these flat panel displays, thickness reduction is calculated|required further.

In particular, in an organic electroluminescent display or organic electroluminescent lighting, the function of folding or winding can be provided using the thing of the very small (thin) thickness dimension. Thereby, not only transport becomes easy, but since use in a curved state is possible in addition to the conventional planar state, utilization in various uses is anticipated. Therefore, the glass substrate and cover glass used for these deformable electronic devices are required to be further improved in flexibility.

In order to improve the flexibility of the said glass plate, it is effective to thin a glass plate. Here, for example, in Patent Document 1, a glass plate having a thickness of 300 µm or less (a glass plate of this dimension size may be called a glass film) is proposed, and by this, use in a curved state is possible. It is made possible to provide flexibility to a glass plate.

On the other hand, various electronic device manufacturing-related processes, such as secondary processing and washing|cleaning, are given to the glass plate used for electronic devices, such as a flat panel display and a solar cell. However, when the glass plate used for these electronic devices is made thin, there is a problem in that even a slight change in stress may lead to breakage, and handling becomes very difficult when manufacturing-related processing of the electronic device is performed. Moreover, since the thickness dimension 300 micrometers or less, especially since the glass plate (glass film) of 200 micrometers or less have abundant flexibility, when performing various manufacturing-related processes, there also exists a problem that positioning is difficult.

Regarding the said problem, the method of conveying a glass plate in a predetermined direction clamping a glass plate from front and back both sides with a pair of endless belts with a pair of endless belts, and grinding the edge part with the grindstone provided in the side is proposed, for example.

On the other hand, since other elements are attached to the surface of this type of glass plate or used as it is depending on the use, very high surface precision is sometimes required. Therefore, it is preferable to perform processing, such as grinding, so that no member may contact at least one of the front and back surfaces if possible.

Therefore, for example, a method of grinding the ends in a state where only one of the front and back surfaces (usually, only the lower surface) of the glass plate is supported by a surface plate or the like is considered, but in this case, a conventional glass plate having a thickness dimension can be processed. Problems that were not anticipated at times may arise.

That is, for this type of processing (grinding), a whetstone having a grinding surface of a shape conforming to the normal processing type is used, and when grinding with this whetstone, a high-pressure grinding solution ( water, etc.) is mainly blown into the contact part of the grinding stone and the end of the glass plate. At this time, although the back surface (lower surface) of a glass plate is supported by a surface plate etc., grinding processing is performed in the exposed state from the reason mentioned above to the surface (upper surface) of a glass plate.

Therefore, for example, in Patent Document 3, a grinding apparatus is provided which provides a cover part for covering a grindstone, forms an opening part in this cover part, and enables the edge of the glass plate to be ground to be in contact with the grindstone through this opening part. has been proposed. Thereby, it is trying to prevent the situation where the grinding liquid supplied to the contact part of the edge part of a grindstone and a glass plate scatters to the surface center side of a glass plate, and adheres to the said surface by a cover part as much as possible.

Japanese Patent Laid-Open No. 2010-132531 Japanese Patent No. 3587104 Japanese Patent Laid-Open No. 2009-172749

However, since a deformation|transformation generate|occur|produces easily by an external load as the thickness dimension of a glass plate becomes small, the possibility that a deformation|transformation like bending downward by the load at the time of contacting a grindstone generate|occur|produce increases. If grinding is performed in such a deformed state, adverse effects on grinding accuracy such as chamfering cannot be avoided. Moreover, since the intensity|strength with respect to an external load also becomes small, so that a thickness dimension becomes small, we are anxious about the breakage (collapse) of the glass plate by contact with a grindstone.

Moreover, when supporting a glass plate with a surface plate etc., it is necessary to process in the state which protruded the edge part of the glass plate which should be processed from a surface plate etc. However, when processing is performed in the state which does not support a part of a glass plate, there exists a possibility that bending deformation may generate|occur|produce in the edge part of a glass plate only by the dead weight. Moreover, since grinding fluid is normally supplied (blowing) in a high-pressure state, when the edge part of the glass plate which is not supported at all hits a grinding fluid, there exists a possibility that the said edge part may flap (vibrating). The said phenomenon appears remarkably as the thickness dimension of a glass plate becomes small.

Also, due to the deformation or vibration of the end portion of the glass plate for the above reasons, a situation in which the opening of the cover portion and the clearance of the glass plate are widened may occur. Usually, this clearance is set to an appropriate size depending on the supply conditions (amount or water pressure, etc.) of the grinding fluid used or the thickness dimension of the glass plate. Also, the possibility that the clearance will fluctuate (increase) greatly increases also by the occurrence of vibration and easiness. Then, since there exists a possibility that a grinding liquid scatters and adheres to the surface center side of a glass plate increases, there exists a possibility of exerting a bad influence on product quality, such as surface precision and cleanliness. In order to cope with an increase in the clearance due to deformation or the like, the clearance between the glass plate and the opening may be set small in advance, but in doing so, the problem of interference between the glass plate and the opening due to sagging or fluctuation of the glass plate arises anew this time.

In view of the above circumstances, in this specification, even if the thickness dimension is a small glass plate compared to the prior art, it is the present invention to prevent deformation of the glass plate and adhesion of liquid to the surface of the glass plate as much as possible, and to perform high-density processing on the edge of the glass plate It is a technical problem to be solved by

The solution of the said subject is achieved by the edge processing apparatus of the glass plate which concerns on this invention. That is, this end processing device includes a support for supporting a glass plate, a processing portion for performing a predetermined processing on the end of the glass plate in a state supported by the support, and a processing portion covering the processing portion and enabling contact between the end portion of the glass plate and the processing portion An end processing apparatus for a glass plate having a cover part having an opening for the support, wherein the support has a first support part for supporting a central region of the glass plate and a second support part for supporting an end-side region of the glass plate, and the thickness of the second support part is It is characterized in that it is smaller than that of the first support portion and is set to a size that can pass through the opening of the cover portion while supporting the end-side region of the glass plate. In addition, the center-side area|region and the edge-side area|region here made the center position in the state which looked at the glass plate planarly, respectively, and the intermediate position of the edge part position as a boundary, and means the area|region of the center side rather than an intermediate position, and the area|region of the edge part. do it by doing

Thus, in this invention, since the 1st support part which supports the center side area|region of a glass plate and the 2nd support part which supports the edge side area|region of a glass plate were provided in a support stand, even if the thickness dimension of a glass plate is small, the end side area|region of a glass plate reliably can strongly support Further, in this case, since the thickness dimension of the second support portion is made smaller than that of the first support portion, and the second support portion is set to a size that can pass through the opening of the cover portion in a state where the end-side region of the glass plate is supported, the thickness of the glass plate In the state in which the edge part side area|region was supported by the 2nd support part, the contact of the edge part of this glass plate, and the processed part covered by the cover part can be aimed at. Thereby, since most of the edge part side area|region including the area|region close to the edge part of the glass plate introduce|transduced into the cover part can be supported before a process start, while suppressing the deformation|transformation of the glass plate when it contacts a process part, grinding liquid Vibration of the glass plate by blowing of a etc. can be suppressed, and high-density processing is attained. Moreover, the situation where the clearance of the opening part of a cover part and a glass plate fluctuate|varies largely by suppressing a deformation|transformation and vibration can be avoided. Therefore, it becomes possible to maintain the said clearance at a predetermined|prescribed magnitude|size, and to prevent as much as possible the situation where liquids, such as a grinding liquid, scatter and adhere to the surface center side of a glass plate.

Moreover, as for the edge part processing apparatus of the glass plate which concerns on this invention, a 2nd support part may be formed separately from a 1st support part. In addition, in this case, the 2nd support part may be comprised so that attachment/detachment is possible with respect to the 1st support part.

By forming the second support part separately from the first support part in this way, the first support part required to support the central region of the glass plate and the second support part required to support the end region of the glass plate can be made into different specifications. have. Thereby, it becomes possible to prevent each support part from becoming over-spec, and to finish high-precision while suppressing the manufacturing cost of each support part low. Further, the end-side region of the glass plate is usually supported by the second support portion in a state in which the end portion is protruded from the second support portion by a predetermined dimension in order to smoothly and reliably perform the processing by the processing portion. In this case, when the relationship between the protrusion dimension of the edge part of a glass plate from a 2nd support part, and the thickness dimension of this glass plate was investigated, the thickness dimension especially according to the thickness dimension of a glass plate from a conventional size thing to a recent thin size (so-called film size), it was found that the appropriate size (range) of the protrusion dimension was greatly changed. Therefore, even when processing a plurality of types of glass plates having different thickness dimensions on the same processing line by configuring the second support part to be detachable with respect to the first support part, only the second support part is replaced, so that an appropriate support state of the glass plate is obtained. can create Thereby, it becomes possible to perform a high-density process for every glass plate from which a thickness dimension differs.

Moreover, in the edge processing apparatus of the glass plate which concerns on this invention, when the protrusion dimension from the 2nd support part of the edge part of the glass plate of the state supported by the support is A [mm], and the thickness dimension of a glass plate is t [mm], A< The protrusion dimension A may be set so as to satisfy tx200.

The above-mentioned dimension setting is effective especially when processing a thickness dimension with respect to the glass plate 300 micrometers or less. That is, if it is a glass plate with a conventional thickness dimension (700 μm or more), even if the protrusion dimension is greater than 200 times the thickness dimension (for example, about 300 times), in particular, it is possible to process the end without problems of deformation or vibration did. On the other hand, when the thickness dimension of a glass plate was set to 300 micrometers or less, the tendency which shows the behavior significantly different from the conventional glass plate of a thickness dimension was seen. The present invention has been made based on the above tendency, and in particular, when processing a glass plate having a thickness of 300 μm or less, by setting the protruding dimension of the glass plate in the above range, the glass plate can be properly supported according to the thickness dimension of the glass plate. can Therefore, it becomes possible to suppress effectively the deformation|transformation and vibration of the glass plate at the time of a process, and to perform a high-density process. In this case, as described above, by configuring the second support part to be detachable from the first support part, the second support part can be replaced with a second support part of an appropriate size so as to have different protrusion dimensions for each thickness dimension. Thereby, it becomes possible to process several types of glass plates from which it is a range of 300 micrometers or less and from which a thickness dimension differs in the same processing line with high precision.

Of course, even in the case of a mixing line with a glass plate having a conventional thickness dimension, by separately preparing a second support part having the same shape and size as that of a conventional surface plate, etc., and replacing them manually or automatically, the conventional size It becomes possible to process a glass plate and a glass plate of a thin-thick size together reliably and with high precision.

Moreover, as for the edge part processing apparatus of the glass plate which concerns on this invention, what the 2nd support part is formed of the material with higher rigidity than a 1st support part may be sufficient.

Considering that the second support portion passes through the opening of the cover portion while supporting the end-side region of the glass plate, it is ideal that the second support portion has a small thickness. On the other hand, if the thickness dimension of the second support portion is too small, it becomes difficult to ensure the rigidity of the second support portion itself. In view of the above, by forming the second support portion of a material having a higher rigidity than the first support portion, the second support portion is formed to a thickness sufficient to pass through the opening of the cover portion, while securing the rigidity of the second support portion itself. It becomes possible to form the second support with a thickness dimension of suitable size as possible.

Moreover, as for the edge processing apparatus of the glass plate which concerns on this invention, the thickness dimension of a 2nd support part may be 0.25 mm or more, and may be set to 4.0 mm or less, Preferably it is 0.5 mm or more, and it may be set to 2.0 mm or less good.

From the above reason, by setting the thickness dimension of a 2nd support part to the above-mentioned range, while making it possible to pass through the opening part of a cover part with a glass plate, it becomes possible to ensure required rigidity. In particular, when the first support, which is the base of the support, is formed of aluminum having good workability, and the second support is formed of a material (for example, stainless steel, etc.) having a higher rigidity than the first support, it is within the above-mentioned range. It is possible to set the thickness dimension of the second support portion in a region where the dimension is relatively small, so that it is possible to further improve workability (workability).

Moreover, the edge processing apparatus of the glass plate which concerns on this invention is applicable suitably with respect to the glass plate whose thickness dimension is set to 300 micrometers or less. In this case, when the thickness dimension becomes too small, it is considered that the molding precision of the glass plate decreases from the viewpoint of molding technology, so that the thickness dimension is preferably set to 5 µm or more if possible. Of course, if there is no problem in terms of molding technology, the present invention is suitably applicable even to a glass plate having a smaller thickness dimension (less than 5 mu m).

Moreover, the solution of the said subject is achieved also by the edge part processing method of the glass plate which concerns on this invention. That is, this edge processing method is a method for performing predetermined processing with the processing part covered with the cover part with respect to the edge part of the glass plate supported by the support, and the opening part for enabling the contact of the edge part of a glass plate and a processing part in a cover part. is formed, the support has a first support for supporting a central region of the glass plate and a second support for supporting an end-side region of the glass plate, and the thickness dimension of the second support is smaller than that of the first support, and It is set to such a size that it can pass through the opening part of the cover part in a state in which the end-side region is supported, whereby the second support part in a state supporting the end-side region of the glass plate is inserted through the opening, so that the end of the glass plate and the processing part are in contact. It is characterized in that it does

In this way, even by the processing method according to the present invention, since the first support part for supporting the central region of the glass plate and the second support part for supporting the end-side region of the glass plate are provided on the support, even when the thickness dimension of the glass plate is small The end-side region of the glass plate can be reliably supported. Further, in this case, since the thickness dimension of the second support portion is made smaller than that of the first support portion, and the second support portion is set to a size that can pass through the opening of the cover portion in a state where the end-side region of the glass plate is supported, the thickness of the glass plate Contact of the edge part of the said glass plate and the processed part covered with the cover part can be aimed at in the state in which the edge part side area|region was supported by the 2nd support part. Thereby, since most of the edge part side area|region including the area|region close to the edge part of the glass plate introduce|transduced into a cover part can be supported before a process start, while suppressing the deformation|transformation of the glass plate at the time of contacting a process part, grinding liquid Vibration of the glass plate by blowing of a etc. can be suppressed, and high-density processing is attained. Moreover, when a deformation|transformation and a vibration are suppressed, the situation in which the clearance of the opening part of a cover part and a glass plate fluctuate|varies largely can be avoided. Therefore, it becomes possible to keep the clearance at a predetermined size and to prevent as much as possible the situation in which a liquid such as abrasive liquid scatters and adheres to the surface center side of the glass plate.

As described above, according to the present invention, even if a glass plate having a smaller thickness dimension than in the prior art, the end portion of the glass plate and the processing part can be brought into contact with each other by passing through the opening of the cover part while supporting the end region. Therefore, it becomes possible to prevent the deformation|transformation of a glass plate and adhesion of the liquid to the glass plate surface as much as possible, and to give a high-density process to the edge part of a glass plate.

BRIEF DESCRIPTION OF THE DRAWINGS It is a top view which shows the outline|summary of the edge part processing apparatus of the glass plate which concerns on 1st Embodiment of this invention.
It is AA sectional drawing of the edge part processing apparatus shown in FIG.
Fig. 3 is an enlarged view of the main part of Fig. 2 before processing.
Fig. 4 is an enlarged view of the main part of Fig. 2 at the time of processing.
5 : is sectional drawing of the principal part of the edge part processing apparatus of the glass plate which concerns on 2nd Embodiment of this invention.

EMBODIMENT OF THE INVENTION Hereinafter, 1st Embodiment of the edge processing apparatus of the glass plate which concerns on this invention is demonstrated with reference to FIGS. In addition, the "up-down direction" in the following description is set for convenience in order to make the understanding of description easy, and does not specify an actual use form.

BRIEF DESCRIPTION OF THE DRAWINGS It is a top view for demonstrating the outline|summary of the edge part processing apparatus of the glass plate which concerns on 1st Embodiment of this invention. This end processing apparatus 10 is an apparatus for performing predetermined processing with respect to the edge part Ge of the glass plate G obtained by dividing|segmenting into predetermined shape by cutting or cleaving, etc. from mother glass after shaping|molding, for example, The support 11 which supports a glass plate, and the processing unit 12 for giving a predetermined process to the edge part Ge of the glass plate G of the state supported by the support stand 11 are provided. In this embodiment, the processing unit 12 is a grinding unit, and the grindstone 13 as a processing part provided in the processing unit 12 along the edge part Ge (edge part) of the glass plate G obtained by cutting into a rectangle etc. It is made possible to grind-process to the edge part Ge by making the said grindstone 13 contact with the edge part Ge, moving.

Here, the glass plate G is formed, for example from silicate glass, silica glass, etc., Preferably it is formed from borosilicate glass, More preferably, it is formed from alkali free glass. When an alkali component is contained in the glass plate G, drop-off|omission of a cation, the phenomenon of so-called soda blasting may occur on the surface. In that case, since the part used as a structural defect arises in the glass plate G, when this glass plate G is used in the curved state, there exists a possibility of causing damage starting from the part which became a defect by aging deterioration as a starting point. . From the above reason, when there exists a possibility to use glass plate G in a non-flat state, it is suitable to form glass plate G with an alkali free glass.

In addition, the alkali-free glass here points out the glass in which the alkali component (alkali metal oxide) is not contained substantially, and specifically points out the glass whose alkali component is 3000 ppm or less. Of course, from the viewpoint of preventing or reducing aging deterioration due to the above reasons, 1000 ppm or less glass is preferable, 500 ppm or less glass is more preferable, and 300 ppm or less glass is still more preferable.

The thickness dimension of glass plate G is set to 300 micrometers or less, Preferably it is set to 200 micrometers or less, More preferably, it is set to 100 micrometers or less. The lower limit of the thickness dimension can be set without any particular restrictions, but is set to 1 µm or more, preferably 5 µm or more, in consideration of molding precision or handling after molding.

In addition, the magnitude|size of surface roughness Ra of the surface Ga on the opposite side to the support stand 11 of glass plate G is not specifically limited. For example, when it is assumed that an electronic device-related process such as film formation is performed, the surface roughness Ra is preferably 2.0 nm or less, more preferably 1.0 nm or less, and still more preferably 0.2 nm or less.

The above-mentioned glass plate G is shape|molded by well-known shaping|molding methods, such as a down-draw method, Preferably it shape|molds by an overflow down-draw method. Moreover, it is also possible to shape|mold by the float method, the slot down-draw method, the roll-out method, the up-draw method, etc. Moreover, it is also possible to perform secondary processing as needed (by elongating a glass primary molded object by lead-draw), and set to the thickness dimension of less than 100 micrometers.

As shown in FIG. 2, the processing unit 12 includes a grinding stone 13, a rotation driving unit 14 for rotatingly driving the grinding stone 13, and a lifting and lowering driving unit 15 for driving the grinding stone 13 up and down, and a grindstone. It has the cover part 16 which covers 13, and the horizontal movement drive part 17 for making the grindstone 13 and the cover part 16 horizontally movable. Although these drive parts are comprised, for example with a servomotor for the purpose of high-density position control, of course, you may comprise with other drive means (various actuators, such as a cylinder). In addition, although illustration is abbreviate|omitted, the processing unit 12 is a grinding liquid supply part which supplies a grinding liquid (for example, pure water) toward the contact part of the edge part Ge of the glass plate G, and the grindstone 13, or its periphery. You may be provided with more. This grinding liquid supply part may be provided inside the cover part 16, and may be provided outside the cover part 16. As shown in FIG.

The grindstone 13 has the grinding surface 18 of the shape according to the process content which should be given to the edge part Ge of the glass plate G on the outer periphery. In this embodiment, the grinding surface 18 is comprised by the slope for giving one-sided chamfering to the edge part Ge. In addition, although the grinding surface 18 is provided in multiple numbers on the outer periphery of the grindstone 13 aiming at the lengthening of a maintenance interval in this example of illustration, of course, only one grinding surface 18 may be formed. In this case, the raising/lowering drive part 15 may raise/lower the grindstone 13 with respect to the cover part 16, and may raise/lower the grindstone 13 and the cover part 16 integrally. In addition, also about the shape of the grinding surface 18, it is possible to set suitably according to processing content (here grinding content).

The opening 19 for enabling the edge part Ge of the glass plate G used as a process object to contact with the grindstone 13 is formed in the cover part 16. As shown in FIG. In detail, the opening 19 is formed in a portion of the cover 16 that faces the support 11 , and passes through the cover 16 in the relative movement direction of the grindstone 13 , There is (FIGS. 1 and 2). In addition, as for the opening width dimension w of the opening part 19, a part of the support 11 mentioned later and the glass plate G can pass, and the interference of the glass plate G etc. at the time of processing and the cover part 16. is set to a size that can be reliably avoided.

The support 11 has the 1st support part 20 which supports the center side area|region G1 of the glass plate G, and the 2nd support part 21 which supports the end side area|region G2 of the glass plate G. , the thickness dimension ts of the second support part 21 is set to be smaller than the thickness dimension of the first support part 20 . In the present embodiment, the support 11 includes, as a component, a plate-like member 22 and a base 23 formed separately from the plate-like member 22 and to which the plate-like member 22 is attached to the step portion. Thereby, while the plate-shaped member 22 mainly functions as the 2nd support part 21, the base 23 mainly functions as the 1st support part 20. As shown in FIG. In this example of illustration, since the plate-like member 22 has the attachment site|part to the base 23, it functions not only as the 2nd support part 21 but also as the 1st support part 20 partly. That is, the plate-like member 22 functions as the whole of the second support portion 21 and a part (end side) of the first support portion 20 , and the base 23 serves as the remainder (center side) of the first support portion 20 . to function as In addition, the shape of the 2nd support part 21 becomes the shape (frame shape which has four corners) corresponding to the four edge parts of the glass plate G (FIG. 1). Accordingly, the plate-like member 22 constituting most of the second support portion 21 is similarly formed in a frame shape having four corner portions.

Moreover, the support stand 11 may hold|maintain the glass plate G, and may further have the position shift prevention means for preventing the position shift at the time of a process. In the present embodiment, one or a plurality of holes 25 open to the support surface 24 provided on the upper side of the first support portion 20, and an intake portion ( The adsorption holding part 27 comprised by 26) is provided in the support base 11 (base 23). Thereby, adsorption hold|maintenance of glass plate G mounted on the support surface 24 is made possible. Among these, it is good that the hole 25 is provided in the position which can adsorb|suck the center side area|region G1 of glass plate G, for example.

Here, the thickness dimension ts of the 2nd support part 21 may be suitably set according to the thickness dimension tg of glass plate G, maintaining the above-mentioned magnitude relationship. Specifically, the thickness dimension ts of the second support portion 21 may be set so as to satisfy tg[mm]×0.1≦ts[mm]. Thereby, it becomes possible to ensure the rigidity of 2nd support part 21 itself, and to suppress the deformation|transformation of glass plate G more reliably. However, if the second support part 21 is too thick, it becomes difficult to pass the opening 19 of the cover part 16 without any interference while the glass plate is supported, so ts[mm]≤tg[mm] You may set the thickness dimension ts of the 2nd support part 21 so that x10 may be satisfied.

Based on the above points, when the thickness dimension (tg) of the glass plate (G) is 300 µm or less, the thickness dimension (ts) of the second support part 21 is specifically 0.25 mm or more and is set to 4.0 mm or less may be used, preferably 0.5 mm or more and may be set to 2.0 mm or less. By setting the thickness dimension ts of the 2nd support part 21 to the above-mentioned range, while making it possible to pass the opening part 19 of the cover part 16 together with the glass plate G, it becomes possible to ensure the required rigidity. .

In addition, in setting the protrusion dimension Lg [mm] from the 2nd support part 21 of the edge part side area|region G2 of the glass plate G of the state supported by the support stand 11, Lg [mm] < tg [ mm] x 200, the protrusion dimension Lg may be set.

In addition, taking the above point into consideration, when the thickness dimension tg of the glass plate G is 300 micrometers or less, the protrusion dimension Lg of the glass plate G is specifically 0.5 mm or more, and is set to 20 mm or less, preferably It is preferably set to 1.0 mm or more and 10 mm or less. By setting the protrusion dimension Lg in the range mentioned above, also when thickness dimension tg of glass plate G is small compared with the past (300 micrometers or less), it becomes possible to support glass plate G stably.

In addition, in this embodiment, as shown in FIG. 1, in all four edge parts of glass plate G, although glass plate G protrudes from the support stand 11, of course, the installation form of the processing unit 12 It is also possible to employ|adopt the form in which the glass plate G protrudes from the support stand 11 in one, two, or three marginal parts depending on the like.

Moreover, it is good to set according to the thickness dimension tg of the glass plate G which should be supported also about the protrusion dimension Ls from the 1st support part 20 of the 2nd support part 21, Specifically, the glass plate G ), when the thickness dimension (tg) is 300 µm or less, the protrusion dimension (Ls) is preferably set to 10 mm or more and 50 mm or less, preferably 15 mm or more and 35 mm or less.

Next, an example of the grinding process using the end processing apparatus 10 of the said structure is demonstrated along with the advantage of this invention.

First, from the state shown in FIG. 3, the horizontal movement drive part 17 of the processing unit 12 is driven, and the grindstone 13 and the cover part 16 are moved close to the support stand 11. FIG. In this embodiment, after installing the processing unit 12 in the position away from the edge part Ge of the glass plate G which should be processed (the position which does not oppose), the grindstone 13 and the cover part 16 are edge part Ge ) horizontally to the virtual extension line (position shown by the dashed-dotted line in FIG. 1). And the processing unit 12 is made to approach the edge part Ge of the glass plate G, and is made to contact the longitudinal direction one end Ge1 (FIG. 1) of the edge part Ge. At this time, the grinding surface 18 of the grindstone 13 is previously set to the same height level as the edge part Ge of the glass plate G which should be processed by the raising/lowering drive part 15. As shown in FIG. When processing the glass plate tg from which the thickness dimension tg of glass plate G differs, the grinding surface 18 is adjusted according to the thickness dimension tg. Moreover, the grindstone 13 is rotated by the rotation drive part 14 at a predetermined rotation speed. Thereby, grinding processing is given to the edge part Ge of glass plate G, and this edge part Ge is finished in the shape which followed the grinding surface 18 (FIG. 4). In this embodiment, since the grinding surface 18 is comprised by the tapered slope, the taper-shaped chamfering (one-sided chamfering) is performed only on the upper side of the edge part Ge by the said process. And by moving the grindstone 13 along the longitudinal direction of the edge part Ge from this state, the edge part Ge of the glass plate G performs a grinding process over the whole longitudinal direction, and the shape as described above is finished

At this time, the thickness dimension ts of the second support part 21 is set smaller than the thickness dimension of the first support part 20, and the cover part 16 together with the glass plate G in a state in which the glass plate G is supported. It is set to a size that can be inserted through the opening 19 of the. Thereby, the 2nd support part 21 can pass the opening part 19 without any interference with the glass plate G, and can make the edge part Ge of the glass plate G contact the grindstone 13. In addition, as shown in FIG. 4, in the state which made the edge part Ge of the glass plate G contact the grinding surface 18 of the grindstone 13, the upper surface Ga of the opening part 19 and glass plate G. ), the clearance (C) is maintained at 5 mm or less. Thereby, the grinding fluid supplied from the grinding fluid supply part (not shown) toward the contact part of the glass plate G and the grindstone 13 or the periphery thereof passes through this clearance C and reaches the surface Ga and adheres. situation can be effectively prevented. However, since interference of the glass plate G and the opening part 19 is anxious when this clearance C is too small, it is preferable that the clearance C secures at least 1 mm or more.

In addition, in this embodiment, when setting the protrusion dimension Lg [mm] from the 2nd support part 21 of the edge part side area|region G2 of the glass plate G of the state supported by the support stand 11, Lg [mm] The protrusion dimension (Lg) was set so that it may satisfy|fill ]<tg[mm]*200. Thereby, when especially a thickness dimension processes with respect to the glass plate G of 300 micrometers or less, by setting the protrusion dimension Lg of the glass plate G in the said range to the thickness dimension tg of the glass plate G Accordingly, the glass plate G can be appropriately supported. Therefore, it becomes possible to suppress effectively the deformation|transformation and vibration of the glass plate G at the time of a process, and to perform a high-density process.

In this way, when the grinding process of one edge part Ge (edge part) of glass plate G is complete|finished, the processing unit 12 is moved to the position opposite to the other edge part (edge part) adjacent, By repeating the operation|movement mentioned above. The other end is also subjected to the same grinding process. Thereby, predetermined grinding processing (one-side chamfering) is performed with respect to all four edge parts (edge part) of glass plate G, and grinding processing is complete|finished.

As described above, by forming the plate-shaped member 22 mainly constituting the second support part 21 separately from the base 23 mainly constituting the first support part 20, the center-side region ( It can be set as another specification with the 1st support part 20 requested|required to support G1, and the 2nd support part 21 requested|required to support the edge part side area|region G2 of glass plate G. Thereby, the individual support parts 20 and 21 are prevented from becoming over-specified, and it becomes possible to finish with high precision while suppressing the manufacturing cost of each support part 20 and 21 low. For example, the base 23, which occupies most of the support 11 and requires processing into a complicated shape in order to attach the suction holder 27 or the like, is formed of aluminum or aluminum alloy which is workability and relatively inexpensive. On the other hand, it becomes possible to form the 2nd support part 21 which is required to be compatible with thinness and rigidity with high rigidity material, such as stainless steel or titanium.

In addition, by configuring the second support part 21 to be detachably attached to the first support part 20 , even when a plurality of types of glass plates G having different thickness dimensions tg are processed on the same processing line, the second support part Just by replacing (21), it is possible to create an appropriate supporting state of the glass plate (G). Thereby, it becomes possible to perform a high-density process for every glass plate G from which a thickness dimension differs.

As mentioned above, although 1st Embodiment of the edge processing apparatus and edge processing method of the glass plate which concerns on this invention were demonstrated, this processing apparatus and processing method can naturally employ|adopt arbitrary forms within the scope of the present invention.

For example, in the above embodiment, a case in which the second support portion 21 and the first support portion 20 are formed separately (the support 11 is formed separately by the plate-shaped member 22 and the base 23) is exemplified However, of course, it is also possible to form the support 11 as an integral piece. 5 : has shown the principal part sectional drawing of the edge part processing apparatus 10' which concerns on 2nd Embodiment of this invention. This end processing apparatus 10' is formed by forming the 2nd support part 21 and the 1st support part 20 integrally. In this way, since the support 11 can be made into an integral product by forming the 2nd support part 21 and the 1st support part 20 integrally, it becomes possible to obtain high dimensional accuracy compared with the case where it is set as a separate body. Of course, in this case as well, the second support part 21 may be formed in a frame shape having four corners.

In addition, in the said embodiment, although the case where the processing unit 12 moved and the support board 11 was ground-fixed was illustrated, of course, it is not limited to this form. For example, it is also possible to adopt a form in which the processing unit 12 is grounded and the support 11 is moved by a driving means (not shown). In this case, by setting it as the structure in which the support stand 11 is rotatable about a vertical axis, even if it is the state which ground-fixed the processing unit 12, it becomes possible to process all four ends (edge part) of the glass plate G.

In addition, in the above embodiment, the case where grinding processing (one-side chamfering) of the end Ge is performed with the whetstone 13 provided with the tapered grinding surface 18 was exemplified. Of course, processing forms other than this are also employable. Do. For example, it is also possible to give both sides chamfering to the edge part Ge by making the grinding surface 18 into the shape for both-side chamfering, and making this grinding surface 18 contact with the front surface of the edge part Ge. In addition, it goes without saying that the chamfer shape is also arbitrary (R shape etc.).

In addition, in the said embodiment, although the grinding process using the grindstone 13 was illustrated as a process performed to the glass plate G, of course, it is also possible to apply this invention to the process of the edge part Ge using tools other than this. . For example, although not illustrated, the present invention can be applied to grinding (polishing) processing using tapes or belts, etching processing, and the like. As an example, when etching is performed, the end Ge is subjected to etching treatment by contacting the roller with the end Ge while rotating the sponge roller impregnated with the etching solution, thereby forming an R-chamfered portion in the end Ge. It is possible to take Moreover, as a grinding method using a tape or a belt, it is possible to use the method and apparatus disclosed by Unexamined-Japanese-Patent No. 2008-264914 and Unexamined-Japanese-Patent No. 5-329760, for example.

In addition, the use in particular does not matter also about glass plate G to which the above process is given. It is possible to apply this invention to the process of the glass plate used for various uses, such as a glass substrate used for a conventionally well-known electronic device, and a cover glass.

10: end processing device 11: support
12: machining unit 13: whetstone
14: rotation drive unit 15: lift drive unit
16: cover unit 17: horizontal movement driving unit
18: grinding surface 19: opening
20: first support 21: second support
22: plate-like absence 23: expectation
24: support surface 25: hole
26: intake part 27: adsorption holding part

Claims (8)

A support for supporting a glass plate, a processing part for applying a predetermined process to an end of the glass plate in a state supported by the support, and an opening for covering the processing part and allowing the end of the glass plate and the processing part to contact As an end processing device for a glass plate having a cover portion formed with,
The support has a first support for supporting a central region of the glass plate and a second support for supporting an end-side region of the glass plate,
The thickness dimension of the said 2nd support part is smaller than that of the said 1st support part, and the edge processing apparatus of the glass plate is set to the size which can pass through the said opening part of the said cover part in the state which supported the end side area|region of the said glass plate. The method of claim 1,
The said 2nd support part is formed separately from the said 1st support part, and the edge processing apparatus of the glass plate comprised with respect to the said 1st support part detachably. 3. The method according to claim 1 or 2,
When the protrusion dimension from the second support part of the end-side region of the glass plate in the state supported by the support is A [mm] and the thickness dimension of the glass plate is t [mm], A<t×200 is satisfied The end processing apparatus of the glass plate in which the protrusion dimension (A) is set so that it is so. 3. The method according to claim 1 or 2,
The said 2nd support part is the edge processing apparatus of the glass plate formed with the material higher in rigidity than the said 1st support part. 3. The method according to claim 1 or 2,
The thickness dimension of the said 2nd support part is 0.25 mm or more, and the edge processing apparatus of the glass plate set to 4.0 mm or less. 3. The method according to claim 1 or 2,
The edge processing apparatus of the glass plate whose thickness dimension of the said glass plate is set to 300 micrometers or less. 7. The method of claim 6,
The edge processing apparatus of the glass plate whose thickness dimension of the said glass plate is set to 5 micrometers or more. As a method for performing predetermined processing with a processing part covered with a cover part with respect to the edge part of the glass plate in the state supported by a support,
An opening is formed in the cover portion to enable contact between the end of the glass plate and the processing portion,
The support has a first support for supporting a central region of the glass plate and a second support for supporting an end-side region of the glass plate,
The thickness dimension of the said 2nd support part is smaller than that of the said 1st support part, and it is set to the size of the extent which can pass through the said opening part of the said cover part in the state which supported the end side area|region of the said glass plate, whereby the glass plate The edge processing method of the glass plate which makes the said 2nd support part of the state which supported the edge part side area|region penetrate through the said opening part, and makes the edge part of the said glass plate and the said processing part contact.

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