KR20100136958A - Glass plate breaking method and glass plate breaking device - Google Patents

Glass plate breaking method and glass plate breaking device Download PDF

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KR20100136958A
KR20100136958A KR1020107007530A KR20107007530A KR20100136958A KR 20100136958 A KR20100136958 A KR 20100136958A KR 1020107007530 A KR1020107007530 A KR 1020107007530A KR 20107007530 A KR20107007530 A KR 20107007530A KR 20100136958 A KR20100136958 A KR 20100136958A
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South Korea
Prior art keywords
glass plate
region
scribe
support
support means
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KR1020107007530A
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Korean (ko)
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KR101462976B1 (en
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세츠오 우치다
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니폰 덴키 가라스 가부시키가이샤
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
    • C03B33/023—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor the sheet or ribbon being in a horizontal position
    • C03B33/033—Apparatus for opening score lines in glass sheets
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
    • C03B33/023—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor the sheet or ribbon being in a horizontal position
    • C03B33/03—Glass cutting tables; Apparatus for transporting or handling sheet glass during the cutting or breaking operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2249/00—Aspects relating to conveying systems for the manufacture of fragile sheets
    • B65G2249/04—Arrangements of vacuum systems or suction cups

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Liquid Crystal (AREA)

Abstract

A scribe S is provided on the surface side of the glass plate 1, and the glass plate 1 is placed at one end 2X of the support means 2 such that the scribe S is positioned around the one end 2X of the support means 2. The glass plate 1 is scribed by applying an external force to the protruding portion of the glass plate 1 in a state where the glass plate 1 is fixed to the support means 2 by being protruded from the support means 2 and fixed to the support means 2 by the fixing means 3. When dividing from (S) as a starting point, the position which applies an external force to the glass plate 1 is made into the inversion point 4X, and one end of the fixing means 3 which exists in the one end 2X side of the support means 2 is carried out. A fixed end 3X, the distance A from the stationary point 4X to one end 2X of the support means 2 and the distance from the fixed end 3X to one end 2X of the support means 2. (B) satisfies the relationship of 1.3≤B / A≤1.7.

Description

Glass plate breaking method and glass plate breaking device {GLASS PLATE BREAKING METHOD AND GLASS PLATE BREAKING DEVICE}

The present invention relates to a glass plate breaking method and a glass plate breaking device, and in particular, to provide a scribe on the surface of the glass plate, while applying an external force to the other area while supporting one area of the glass plate on a flat surface of the support means. The present invention relates to a glass plate braking method and a braking device for adding and dividing the glass plate starting from the scribe.

As already known, various glass plates represented by glass substrates for flat panel displays, such as a liquid crystal display, a plasma display, an electroluminescent display, and a field emission display, are cut | disconnected to the required size according to a use after molding. It is customary to be. As a cutting method for this, a braking method in which a scribe (scribed line) is engraved on the surface of the glass plate in correspondence with the required size by a diamond cutter or a laser, is used, and the glass plate is broken along the scribe. have.

In the case of adopting this braking method, the variation of the scribe formed by engraving on the surface of the glass plate is considered. First, in the step of forming the scribe, the central crack substantially perpendicular to the surface of the glass plate is formed at the site of formation. ) And a lateral crack along the surface of the glass plate exists. Then, when the tearing force is applied to both sides of the glass plate with the scribe as a boundary, as shown in FIGS. 6A and 6B, tensile stresses on both the left and right sides are concentrated on the tip X of the central crack Sm of the scribe. Therefore, the central crack Sm expands in the thickness direction, and the glass plate 10 is cut at the time when the central crack Sm reaches the rear surface of the glass plate 10 as it progresses.

This breaking method is employed not only when dividing a glass plate into two areas (two necessary parts) which will be future products, but also when dividing a glass plate into one required part and the small unnecessary part which exists in the end part. . When the latter is described as an example, basically, as shown in FIG. 7, the required portion (first area) 10A is supported on the glass plate 10 provided with a scribe (S1) provided on the surface side. It is supported by the support means 20 which consists of the member 20a and the support jig 20b, and is supported by the back surface side, and the end 20X of the support means 20 (contact end to the glass plate 10 of the support jig 20b). 20bx], the unnecessary part (second area | region) 10B which protrudes from the surface side is pushed down by the press-fit jig 40, and division is performed starting from scribe S1 as a starting point. In this case, it is preferable that the formation position of the scribe S1 in the surface of the glass plate 10 matches with the one end 20X of the support means 20.

As a specific example of such a braking method, according to Patent Document 1 below, a glass plate having a cutting line (scribe) drawn on its upper surface is projected on a mounting table or a conveying means (support member) to be horizontally loaded, and The lower supporting means (supporting jig) is raised from below the projection of the glass plate to contact the lower surface of the glass plate to follow the scribe, and the upper pressing means (pressing jig) is lowered from the upper side to the projecting end side than the scribe of the glass plate. A method of breaking a glass plate along a scribe by means of pressing and pressing is disclosed.

Moreover, according to following patent document 2, while protruding the edge of the glass plate by which the cutting line (scribe) was provided in the upper surface from the edge part of a conveyance conveyor (support member), the edge of the lower side opposite to the scribe of a glass plate was lowered. A method for breaking a glass plate is disclosed by lowering the upper pressing member (pressing jig) in an arc shape from the inclined upper side of the scribe in a state supported from below by a supporting jig, and pressing down the end edge side of the scribe of the glass plate. have.

Moreover, according to following patent document 3, the edge of the glass plate with a cutting line (scribe) was protruded from the edge of the table (support member), and the glass plate was pressed and fixed in parallel with the scribe on the table. A method of breaking and breaking a glass plate is disclosed by raising the end edge side above the table on the scribe of the glass plate.

Japanese Patent Laid-Open No. 2006-321695 Japanese Patent Laid-Open No. 8-253336 Japanese Patent Laid-Open No. 7-237929

By the way, when employ | adopting the method of cutting a glass plate by a braking, in the past, defects, such as "a clam flaw", "a flaw", "a horn", "a dent", "a shaving", are frequent in the cutting edge part Under the circumstances. Among these defects, as shown in FIG. 8, as shown in FIG. 8, an uneven protrusion 10AX remains at the cut end of one glass plate 10A after cutting, and the cut end of the other glass plate 10B. It is a flaw that there is an illegal missing section 10BX.

In that case, since the braking method disclosed in Patent Documents 1, 2, and 3 is based on the basic principle of providing a scribe to the glass plate and causing stress concentration due to tensile stress to the central crack of the scribe, It can be expected that one of the drawbacks of the above avoids the occurrence of a `` colloidal flaw ''.

However, the present inventors have confirmed that the occurrence of "blemishes", "horns", "dents", and "cuts" is still unavoidable even by the breaking method disclosed in each of these documents. In particular, when the above-mentioned "cutting" occurs, the projection 10AX of one glass plate 10A can be cut off in the end surface polishing step, but there is a difficulty in that it takes a long time for the end surface polishing, and the other glass plate The missing part 10BX of 10B cannot remove all, even if it carries out an end surface grinding process, and the fatal problem in quality quality that some remain | survive arises.

The cause of this "cutting" is because the position where the external force from the press-fit jig or the like acts on the projecting portion of the glass plate protruding from the one end by the supporting means is not appropriate, so that it is near both sides of the scribe of the glass plate. The present inventors have found that the bending moment is caused by not acting evenly. In other words, when the central crack of the scribe proceeds in the thickness direction of the glass plate due to the bending moment, the balance of the stresses acting on both sides of the central crack occurs, leading to the finding that the straightness of the central crack in the thickness direction is impaired. Reached.

In view of these matters, the point of action of the external force on the glass plate projection from the support means at the time of braking becomes important, but in the present state, no consideration has been made on such matters.

In view of the above circumstances, the present invention provides an appropriate external position force acting on a glass plate provided with a scribe during braking, a positional relationship between a support means for supporting the glass plate, and a fixing means for fixing the glass plate to the support means. It is a technical object of the present invention to provide a glass plate braking method and a glass plate braking device in which unfair defects are not seen.

As a result of intensive efforts, the inventors have found that one end of the support means for supporting the glass plate provided with the scribe, one end of the fixing means for fixing the glass plate to the support means, and an external force to the glass plate portion protruding from one end of the support means. When the positional relationship of the point of action satisfies a specific condition, it has been found that an unfair defect does not occur at the cut end of the glass plate after breaking, and the present invention has been completed based on the knowledge.

From this point of view, the method according to the present invention, which was devised to solve the above technical problem, provides a scribe on the surface side of the boundary between the first region and the second region of the glass plate, and part or all of the first region of the glass plate. Is supported by the support means, and when the support is made, part or all of the second region of the glass plate protrudes from one end of the support means, and the scribe is positioned around one end of the support means, In the glass plate breaking method of applying the external force to the 2nd area | region of the said glass plate from the surface side in the state which fixed the 1st area | region of the said glass plate to the said support means, and dividing the said glass plate from the said scribe starting point. One position of the said support means is made into the point where the external force is applied to 2 area | regions. When one end of the fixing means existing at the fixed end is a distance A from the stationary point to one end of the supporting means, and a distance B from the fixed end to one end of the supporting means is 1.3≤B. It is characteristic to satisfy the relationship of /A≤1.7.

According to this configuration, the distance B becomes longer than the distance A on the basis of one end of the support means, but the support means is thus biased by one end of the support means from the center position of the stationary end and the station point to the stationary side. The phenomenon that stress is generated evenly on the stationary end side and the inversion point side of the glass plate centering on one end of the cross section arises. And since the scribe of a glass plate exists around one end of a support means, the stress (or bending moment) which generate | occur | produces on both sides of this scribe also becomes equal, and the fault which is unfair to the cutting edge part of the glass plate after braking, especially the above-mentioned "cut off" ”Becomes difficult to occur. That is, conventionally, when one end of the said support means was arrange | positioned in the vicinity of the center position of a fixed end and a stationary point, there existed a tendency that equal stress generate | occur | produced in both sides of the scribe of a glass plate, respectively, but the inventors thought that such thought itself was misunderstood. After recognizing the basis, we came to find the numerical range. Therefore, when the B / A is less than 1.3, the conventional positional relationship becomes close, so that the stresses generated on both sides of the scribe of the glass plate become nonuniform, whereas when the B / A exceeds 1.7, the conventional positional relationship is excessively excessive. They are separated from each other beyond the proper range, and the stresses on both sides of the scribe become uneven. From such circumstances, by unjustly shifting one end of the glass plate supporting means from the center position of the fixed end and the stationary point by an appropriate amount, it is difficult to cause an unfair fault of the cut end represented by "cutting", and smooth the processing of the cut end in the end surface polishing process. It can also be performed correctly.

In this case, the support means may be a support member having a support surface, and one end of the support means may be one end of the support member having the support surface.

In this way, the support means can be comprised only by the support member which has a support surface, such as a support table and a conveyance conveyor, and it becomes possible to reduce the number of parts of a braking apparatus, and also to simplify a structure.

Moreover, the said support means consists of a support member which has a support surface, and the support jig arrange | positioned apart from the said support member, and one end of the said support means may be a contact end to the glass plate of the said support jig.

In this way, braking can be performed smoothly using the contact end of the support jig provided as a separate body from the support member which has a support surface.

On the other hand, it is preferable that the distance which the said scribe is biased from the one end of the said support means to the said stationary point side, and the distance which is biased to the said fixed end side are all contained within 40% of the said distance A.

In other words, the scribe of the glass plate can be braked without causing an unfair defect such as the above-mentioned "cutting" to the cut end, even if the scribe of the glass plate does not coincide with the position of the support means, and there is no need to strictly position the glass plate. And the operation is simplified. In this case, if the offset distance to the scribing point side and the fixed end side of the scribe is not included within 40% of the distance A, not only will there be a problem in smooth braking, but there is a fear of an unfair defect in the cutting end. have.

Moreover, it is preferable that the 1st area | region of the said glass plate is a required part, and a 2nd area | region is an unnecessary part. Here, "necessary part" means the part which should become a future product, and "unnecessary part" means the part which is discarded.

In this case, since the area of the unnecessary part is narrower than that of the necessary part, the numerical limitation of 1.3? B / A? 1.7 is effective, and the area of the necessary part can be secured to the maximum without waste.

Moreover, it is preferable that the said glass plate is the area | region of 20-50 mm width | variety which has two orthogonal sides, respectively 1000 mm or more, and thickness is 3 mm or less, and the said unnecessary part spreads over one side.

In this case, the numerical limitation of 1.3 ≦ B / A ≦ 1.7 is more effectively utilized.

The fixing means may be negative pressure suction means for generating a negative pressure suction force on the surface side of the support means, or is disposed on the surface side of the glass plate to press the glass plate against the support means and in a direction parallel to the scribe. It may be extended pressing.

That is, the fixing means for fixing the glass plate with respect to the supporting means is not particularly limited as long as the glass plate fulfills its role, but the two kinds of glass may be advantageous in performing secure fixing.

In addition, the means for applying an external force to the second region of the glass plate may be arranged on the surface side of the glass plate and may be press-fitted to extend in a direction parallel to the scribe.

Also in this case, the means for applying the external force to the second region of the glass plate is not particularly limited, including the direction in which the external force is applied. However, the above means is advantageous in performing more reliable braking.

The glass plate used as the object of the braking method provided with the above structure can be used as the glass substrate for flat panel displays.

This makes it possible to reliably and remarkably obtain the above-described effects while appropriately dealing with the recent increase in thickness of the glass substrate for flat panel display.

On the other hand, in order to solve the above technical problem, the device according to the present invention provides a scribe on the surface side of the boundary between the first region and the second region of the glass plate, and supports a part or all of the first region of the glass plate. Supported by the means, and when the support is made, part or all of the second region of the glass plate protrudes from one end of the support means, and the scribe is positioned around one end of the support means, and the fixing means In the glass plate breaking device configured to divide the glass plate starting from the scribe by applying an external force to the second area of the glass plate from the surface side in a state where the first region of the glass plate is fixed to a part of the supporting means. The position where the external force is applied to the second region of the When one end of the fixing means existing at one end is set as the fixed end, the distance A from the stationary point to one end of the supporting means and the distance B from the fixed end to one end of the supporting means are 1.3. It is characterized by being configured to satisfy the relationship of ≤ B / A ≤ 1.7.

According to such a structure, the same benefits as already described about the basic structure of the glass plate breaking method mentioned above can be enjoyed.

(Effects of the Invention)

As described above, according to the present invention, by biasing one end of the support means in the proper direction from the center position of the stationary end and the stationary point, stress is generated evenly on the stationary end side and the stationary side of the glass plate centered on one end of the support unit. The stresses which are seen on both sides of the scribe of the glass plate existing around one end of the supporting means are also equalized, and it is difficult for an unfair fault, especially "cut", to occur at the cut end of the glass plate after the braking.

1 is a schematic longitudinal side view of a glass plate breaking apparatus according to a first embodiment of the present invention.
It is a schematic perspective view of the glass plate breaking device which concerns on 1st Embodiment of this invention.
It is a schematic longitudinal side view of the glass plate breaking device which concerns on 2nd Embodiment of this invention.
It is a schematic longitudinal side view of the glass plate breaking apparatus which concerns on 3rd embodiment of this invention.
It is a schematic longitudinal side view of the glass plate breaking device which concerns on 4th Embodiment of this invention.
6A is an enlarged longitudinal sectional side view of a main portion of a glass plate for explaining a conventional problem.
6B is an enlarged longitudinal sectional side view of a main portion of a glass plate for explaining a conventional problem.
7 is a schematic longitudinal side view of a conventional general glass plate breaking device.
8 is an enlarged longitudinal sectional side view of a main portion of a glass plate for explaining a conventional problem.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described with reference to attached drawing. In addition, in the following embodiment, the case where a glass plate is a glass substrate for flat panel displays, especially a glass substrate used for a liquid crystal display or a plasma display, is illustrated.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic longitudinal side view which shows the glass plate braking apparatus (implementation situation of the glass plate braking method) which concerns on 1st Embodiment of this invention, FIG. 2 is a schematic perspective view, and in this embodiment is a required part of the glass plate 1 The scribe S is provided in the surface side of the boundary of the 1st area | region 1A and the 2nd area | region 1B which is an unnecessary part. The 1st area | region 1A of the glass plate 1 is supported by the surface of the support member (support means) 2 which has a support surface which consists of a support plate, a conveyance conveyor, etc., and in the state supported by the 1st area | region of the glass plate 1 The two regions 1B protrude from one end (right end) 2X of the supporting member 2, and the scribe S is located just above the one end 2X of the supporting member 2. Moreover, the pressing jig 3 as a fixing means which fixes a part of 1 A of 1st area | regions of the glass plate 1 with respect to the support member 2 is provided in the surface side of the support member 2, and the glass plate 1 On the surface side of the second region 1B, a press-fit jig (breaking jig) 4 is provided to apply an external force to the rear surface side with respect to the second region 1B.

In this case, the glass plate 1 has a substantially rectangular shape, two orthogonal sides are 1000 mm or more and a thickness of 3 mm or less, respectively, and the second region 1B is parallel to one side (scribe S). 20-50 mm width | variety area | region spreads over. Further, the pressing jig 3 extends in a direction parallel to the scribe S to press the first region 1A of the glass plate 1 over the entire length in the same direction, and the press-fit jig 4 has a scribe ( It extends in the direction parallel to S), and external force is applied with respect to the 2nd area | region 1B of the glass plate 1 over the full length in the same direction.

Here, as shown in FIG. 1, the 2nd area | region of the glass plate 1 in the state which fixed the 1st area | region 1A of the glass plate 1 by the pressing jig 3 on the surface of the support member 2 ( When the external force is applied to the 1B) by the press-fit jig 4 to break the glass plate 1 from the scribe S as a starting point, positioning as shown below is made. That is, the pressing jig 3 which exists in the one end 2X side of the support member 3 is made into the station 4X as the position where the press-fit jig 4 exerts an external force to the 2nd area | region 1B of the glass plate 1. When one end (right end) of) is set as fixed end 3X, the distance A from the inversion point 4X to one end 2X of support member 2 and the support member 2 from fixed end 3X The distance B to one end 2X of () is set to satisfy the relationship of 1.3 <= B / A <1.7.

Accordingly, one end 2X of the support member 2 is biased toward the stationary point 4X from the center position of the stationary end 3X and the stationary point 4X, but one end of the support member 2 is derived from such a bias. The stress will generate | occur | produce evenly on the fixed end 3X side and the reverse point 4X side of the glass plate 1 centering on (2X). And since the scribe S exists just above the one end 2X of the support member 2, the stress which generate | occur | produces on both sides of this scribe S also becomes equal, and the press-fit jig 4 is downward (vertical downward) It is difficult to generate | occur | produce the faulty fault, especially the above-mentioned "sharpening" in the cut edge part of the glass plate 1 after braking accompanying pressing down by).

In this case, the scribe S engraved and formed on the glass plate 1 does not necessarily need to be located just above the one end 2X of the support member 2, as shown in the figure, If it is in the range of 40%, even if it shifts from the one end 2X of the support member 2 to the fixed end 3X side, or the inverted point 4X side, the degree which an unfair fault does not generate | occur | produce in the cutting edge part of the glass plate 1 after braking is The stress is generated evenly on both sides of the scribe S as much as possible.

It is a schematic longitudinal side view which shows the glass plate breaking device (the implementation situation of the glass plate breaking method) which concerns on 2nd Embodiment of this invention. The glass plate braking device according to the second embodiment is different from the first embodiment in that the fixing means for fixing the glass plate 1 to the support member 2 provides a negative pressure suction force to the surface side of the support member 2. It is the point comprised with the negative pressure suction means 5 which generate | occur | produces. This negative pressure suction means 5 is mainly comprised by the many through-hole 5a formed in the support member 2, and the negative pressure source apparatus (not shown) which vacuum-processes through these through-holes 5a. In this case, one end (right end) of the negative pressure suction means 5 existing on one end 2X side of the support member 2 becomes the fixed end 5X, and the support member 2 is moved from the stationary point 4X. The distance A to one end 2X and the distance B from the fixed end 5X to one end 2X of the support member 2 are set to satisfy the relationship of 1.3 ≦ B / A ≦ 1.7. have. Since the other structure is the same as that of 1st Embodiment mentioned above, the same code | symbol is attached | subjected about the component which is common to both, and the description is abbreviate | omitted.

It is a schematic longitudinal side view which shows the glass plate breaking device (the implementation situation of the glass plate breaking method) which concerns on 3rd Embodiment of this invention. The glass plate breaking apparatus according to the third embodiment differs from the first embodiment described above in that the press-fit jig (breaking jig) 4 that applies an external force to the second region 1B of the glass plate 1 is made of the first plate. It becomes the cross-section C-shaped jig which clamps the edge part (right edge part) of 2 area | region 1B, and this press-fit jig 4 rotates downwards by making the one end 2X of the support member 2 into a point. It is a point which is set as the structure (the structure which the press-fit jig 4 descend | falls vertically downward). In this case, the contact point between the left end of the press-fit jig 4 and the surface of the second region 1B of the glass plate 1 serves as the station 4X, and from the station 4X the supporting member ( The distance A to one end 2X of 2) and the distance B from the fixed end 3X to one end 2X of the supporting member 2 satisfy the relation of 1.3 ≦ B / A ≦ 1.7. Is set to. Since the other structure is the same as that of 1st Embodiment mentioned above, the same code | symbol is attached | subjected about the component which is common to both, and the description is abbreviate | omitted. Moreover, also about this 3rd Embodiment, you may make a fixing means a negative pressure suction means similarly to 2nd Embodiment mentioned above.

It is a schematic longitudinal side view which shows the glass plate breaking device (the implementation situation of the glass plate breaking method) which concerns on 4th Embodiment of this invention. The glass plate braking device according to the fourth embodiment is different from the above-described first embodiment in that the supporting means for supporting the glass plate 1 on the rear surface side comprises a supporting surface made of a support plate, a conveying conveyor, or the like. It is the point comprised from the support member 2a which has, and the support jig 2b which is arrange | positioned so that it may be spaced apart to the right side from the end 2ax of this support member 2a, and the front end may contact the back surface of the glass plate 1. And in this case, the contact end 2bx of the support jig 2b to the back surface of the glass plate 1 will correspond to the end 2X of the support means 2, Comprising: The distance A to one end 2X and the distance B from the fixed end 3X to one end 2X of the support means 2 are set to satisfy the relationship of 1.3 ≦ B / A ≦ 1.7. have. Since the other structure is the same as that of 1st Embodiment mentioned above, the same code | symbol is attached | subjected about the component which is common to both, and the description is abbreviate | omitted. Moreover, also about this 4th Embodiment, you may make a fixing means a negative pressure suction means similarly to 2nd Embodiment mentioned above.

Next, when the present inventor satisfies the relationship of 1.3? B / A? 1.7, the outline of the experiment will be described for finding the matter that an unfair defect does not occur at the cut end after the breaking of the glass plate 1. .

That is, in the form shown in FIG. 1, the distance A is maintained at 50 mm, the value of B / A is changed by changing the distance B, and the press-fit jig 4 is lowered to break the glass plate 1. After performing the test, it was examined whether or not an improper fault occurred at the cut end. The experimental results are shown in Table 1 below as Experiments 1 to 7. In addition, in the following Table 1, in the column of the generation | occurrence | production situation of shaving, "(◎)" shows that generation | occurrence | production of shaving is hardly observed, and "(circle)" shows that a problem does not arise by performing end surface processing, such as an end surface grinding process. The degree of shaping was observed, and "x" indicates that the remaining shaping was observed as mold release even after the end surface treatment was performed.

Experiment 1 Experiment 2 Experiment 3 Experiment 4 Experiment 5 Experiment 6 Experiment 7 A (mm) 50 50 50 50 50 50 50 B (mm) 60 65 70 75 80 85 90 B / A 1.2 1.3 1.4 1.5 1.6 1.7 1.8 The outbreak situation of shaving × ○ ◎ ◎ ◎ ○ ×

According to the said Table 1, when the value of B / A is 1.3 or more and 1.7 or less, it can grasp | ascertain that only the cutting edge which does not have a problem generate | occur | produces in a cutting edge part by performing an end surface treatment after the glass plate 1 breaking. there was.

Then, in the form shown in Fig. 1, the distance A is changed and the distance B is also changed so that the value of B / A is within 1.3 or more and 1.7 or less (about 1.5). After the press-fit jig 4 was lowered and the glass plate 1 was brazed, it was examined whether or not an improper fault occurred at the cut end. The results of those experiments are shown in Table 2 below as Experiments 8-12. In addition, in the following Table 2, "(◎)" in the column of the generation | occurrence | production situation of shaving has shown the matter similar to said Table 1 above.

Experiment 8 Experiment 9 Experiment 10 Experiment 11 Experiment 12 A (mm) 7 10 50 100 150 B (mm) 11 15 75 150 225 The outbreak situation of shaving ◎ ◎ ◎ ◎ ◎

According to the said Table 2, even when the distance A is changed, when the value of B / A is 1.3 or more and 1.7 or less, when the generation | occurrence | production situation of the shaving in the cutting edge of the glass plate 1 after a braking worsens, I could see what was missing.

Here, positioning the scribe S of the glass plate 1 directly above the one end 2X of the support member (support means) 2 is performed by a predetermined positioning apparatus or manually, It is not only very difficult to reliably perform positioning, but also attempting to increase the positioning accuracy leads to complexity, high cost, or complicated operation, resulting in problems. Therefore, in the form shown in FIG. 1, the fixed end 3X, the one end 2X of the support member 2, and the inversion point 4X are kept in the fixed position which satisfy | fills the said numerical limitation, An experiment was conducted in which the position was biased from the one end 2X of the supporting member 2 to the fixed end 3X side and the reverse point 4X side. In this case, the distance A was 50 mm, the distance B was 75 mm, and the thickness of the glass plate 1 was 0.7 mm. The experimental results are shown in Table 3 below as Experiments 13 to 17. In Table 3 below, the sign "+" in the column of the shift amount (the shift amount from one end 2X of the support member 2) from the end of the support member 2 indicates that the scribe S is the reverse point 4X. The state deviated on the side and the symbol "-" indicate the state deviated on the fixed end 3X side, and "○" and "◎" in the column of the state of occurrence of shaving are the same as those in Table 1 above. It is shown.

Experiment 13 Experiment 14 Experiment 15 Experiment 16 Experiment 17 Shift amount from end of support member
(Ratio to A)
-40%
-30%
0
+ 30%
+ 40% Occurrence of cutting ○ ◎ ◎ ◎ ○

According to the said Table 3, the scribe S of the glass plate 1 is biased to the stationary point 4X side and the fixed end 3X side by the length equivalent to 30% of the distance A from one end of the support member 2. It was understood that the generation of degree cutting is hardly observed, and even if the amount of deviation is 40% of the distance A, the degree of shaping that does not cause a problem is observed by performing end surface treatment such as an end surface polishing step or the like.

In addition, the experimental result shown in the said Table 1, Table 2, 3 was similarly obtained not only in the form shown in FIG. 1 but also in the form shown in FIG. 3, FIG. 4, and FIG.

1: glass plate 1A: first region
1B: 2nd area 2: support means (support member)
2X: One end of the supporting means 3: Fixing means (pressing jig)
3X: fixed end 4: press-fit jig (breaking jig)
4X: power point 5: fixing means (negative pressure suction means)
5X: fixed end
A: distance from the station to one end of the support means
B: distance from the fixed end to one end of the support means
S: scribe

Claims (11)

When a scribe is provided on the boundary surface side of the first region and the second region of the glass plate, and a part or all of the first region of the glass plate is supported by the supporting means, and the support is performed, a part of the second region of the glass plate or The glass plate is protruded from one end of the support means, the scribe is positioned around one end of the support means, and the first region of the glass plate is fixed to a part of the support means by the fixing means. In the glass plate breaking method of dividing the said glass plate starting from the said scribe by applying an external force to a 2nd area | region from the surface side:
A distance from the threshold to one end of the support means when the position where the external force is applied to the second region of the glass plate is set as the emphasis point and one end of the fixing means existing on one end side of the support means is the fixed end. ) And the distance (B) from the fixed end to one end of the support means satisfies a relationship of 1.3 ≦ B / A ≦ 1.7. The method of claim 1,
The supporting means is a supporting member having a supporting surface, and one end of the supporting means is one end of the supporting member having the supporting surface. The method of claim 1,
The support means comprises a support member having a support surface and a support jig disposed spaced apart from the support member; In addition, one end of the support means is a glass plate breaking method, characterized in that the contact end to the glass plate of the support jig. The method according to any one of claims 1 to 3,
And the distance between the scribe and the biased side from the one end of the support means, and the distance to the fixed end side are both contained within 40% of the distance (A). The method according to any one of claims 1 to 4,
The 1st area | region of the said glass plate is a required part, and a 2nd area | region is an unnecessary part, The glass plate breaking method characterized by the above-mentioned. The method of claim 5, wherein
The glass plate is a glass plate breaking method, characterized in that the two orthogonal sides are each 1000 mm or more and the thickness is 3 mm or less, and the unnecessary portion is an area of 20 to 50 mm width covering one side. The method according to any one of claims 1 to 6,
The fixing means is a negative pressure suction means for generating a negative pressure suction force on the surface side of the support means. The method according to any one of claims 1 to 6,
And said fixing means is a pressing jig disposed on the surface side of said glass plate to press said glass plate against said supporting means and extend in a direction parallel to said scribe. The method according to any one of claims 1 to 8,
The means for applying an external force to the second region of the glass plate is a press-fit jig disposed on the surface side of the glass plate and extending in a direction parallel to the scribe. The method according to any one of claims 1 to 9,
The said glass plate is a glass substrate for flat panel displays, The glass plate breaking method characterized by the above-mentioned. A scribe is provided on the boundary surface side of the first region and the second region of the glass plate, a part or all of the first region of the glass plate is supported by the supporting means, and when the support is made, a part of the second region of the glass plate or The glass plate is protruded from one end of the support means, the scribe is positioned around one end of the support means, and the first region of the glass plate is fixed to a part of the support means by the fixing means. In the glass plate breaking apparatus which comprised the said glass plate to divide | segment from the said scribe starting point by applying external force to a 2nd area | region:
A distance from the threshold to one end of the support means when the position where the external force is applied to the second region of the glass plate is set as the emphasis point and one end of the fixing means existing on one end side of the support means is the fixed end. ) And a distance (B) from the fixed end to one end of the supporting means satisfy a relationship of 1.3 ≦ B / A ≦ 1.7.
KR1020107007530A 2008-03-25 2008-12-04 Glass plate breaking method and glass plate breaking device KR101462976B1 (en)

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PCT/JP2008/072091 WO2009118959A1 (en) 2008-03-25 2008-12-04 Glass plate breaking method and glass plate breaking device

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TWI434813B (en) 2014-04-21
CN101910075A (en) 2010-12-08
WO2009118959A1 (en) 2009-10-01
CN101910075B (en) 2013-07-10
TW200940463A (en) 2009-10-01
JP5376282B2 (en) 2013-12-25
JP2009227550A (en) 2009-10-08

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