CN114302866A - Method and apparatus for manufacturing sheet glass - Google Patents
Method and apparatus for manufacturing sheet glass Download PDFInfo
- Publication number
- CN114302866A CN114302866A CN202080059233.2A CN202080059233A CN114302866A CN 114302866 A CN114302866 A CN 114302866A CN 202080059233 A CN202080059233 A CN 202080059233A CN 114302866 A CN114302866 A CN 114302866A
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- China
- Prior art keywords
- region
- support member
- sheet glass
- scribe line
- auxiliary support
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- 239000005357 flat glass Substances 0.000 title claims abstract description 151
- 238000004519 manufacturing process Methods 0.000 title claims description 37
- 238000000034 method Methods 0.000 title claims description 28
- 238000001179 sorption measurement Methods 0.000 claims abstract description 9
- 238000005520 cutting process Methods 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 19
- 238000000926 separation method Methods 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 description 21
- 239000011521 glass Substances 0.000 description 12
- 238000005452 bending Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 11
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000006059 cover glass Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F3/00—Severing by means other than cutting; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F3/00—Severing by means other than cutting; Apparatus therefor
- B26F3/002—Precutting and tensioning or breaking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D5/00—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D5/00—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor
- B28D5/0005—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by breaking, e.g. dicing
- B28D5/0011—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by breaking, e.g. dicing with preliminary treatment, e.g. weakening by scoring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
- B28D7/04—Accessories specially adapted for use with machines or devices of the preceding groups for supporting or holding work or conveying or discharging work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
- B28D7/04—Accessories specially adapted for use with machines or devices of the preceding groups for supporting or holding work or conveying or discharging work
- B28D7/046—Accessories specially adapted for use with machines or devices of the preceding groups for supporting or holding work or conveying or discharging work the supporting or holding device being of the vacuum type
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
When a scribe line (S) is formed on the surface (Ga, Gx) side of the boundary between a first region (G1) and a second region (G2) of a sheet glass (G) and the sheet glass (G) is cut along the scribe line (S), a force toward the rear surface (Gy) side acts on the second region (G2) and the sheet glass (G) is cut along the scribe line (S) in a state where the rear surface (Gy) of the first region (G1) is supported by a rear surface support member (3) and the second region (G2) is supported by an adsorption pad (7) and an auxiliary support member (8) extending in the direction of the scribe line (S).
Description
Technical Field
The present invention relates to an improvement in a manufacturing technique of a sheet glass including a technique of cutting the sheet glass along a score line.
Background
As is well known, plate glasses are used in various fields, including glass substrates for displays such as liquid crystal displays, plasma displays, and organic EL displays, cover glasses for organic EL lighting, and the like. In manufacturing such a plate glass, a step of cutting out a small plate glass from a large plate glass, a step of trimming an edge portion of the plate glass along the edge, and the like are performed. In these steps, the following is generally performed: after the plate glass is formed into the scribing line, the plate glass is cut along the scribing line.
As a specific example of such a method of cutting a plate glass, a method disclosed in patent document 1 can be mentioned. In the method disclosed in this document, after forming a scribe line on the front surface of a plate glass, the back surface of a first region (region on the side of the scribe line) of the plate glass is supported in advance by a back surface support member. Then, in this state, the back surface of the second region (the region on the other side of the scribe line) of the plate glass is previously suction-supported by the suction pad, and a force toward the back surface side is applied to the second region while the roller (rolling element) is rolled along the surface of the second region. Thereby, bending stress is applied to the vicinity of the scribing line, and the sheet glass is cut along the scribing line.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2017-226549
Disclosure of Invention
Problems to be solved by the invention
However, in the structure in which the rear surface of the second region of the plate glass is suction-supported by the suction pad and the plate glass is cut as disclosed in patent document 1, the following problems arise due to the characteristics of the plate glass, the characteristics of the suction pad, and the like.
That is, the plate glass before cutting may be warped. When the plate glass having such warpage is cut, if the suction pad is used to suction-support the rear surface of the second region of the plate glass, the suction-support portions become sparse. Further, the suction pad is formed of an elastic member such as rubber or resin, and therefore has characteristics such as high stretchability. This makes it difficult to sufficiently correct the warp of the plate glass at the time of cutting because the elements for supporting the back surface of the second region of the plate glass are insufficient. Therefore, the bending stress cannot be uniformly applied to the vicinity of the scribe line of the plate glass, and proper cutting along the scribe line is hindered. As a result, a problem occurs in that a large amount of glass frit is scattered due to chipping (improper cracking at the cut end face) at the cut portion of the plate glass.
From the above viewpoint, an object of the present invention is to properly cut a sheet glass along a scribe line by satisfactorily supporting the rear surface of a second region of the sheet glass at the time of cutting.
Means for solving the problems
A first aspect of the present invention made to solve the above problems is a method for manufacturing a sheet glass, including a step of forming a scribe line on a surface side of a boundary portion between a first region and a second region of the sheet glass and cutting the sheet glass along the scribe line, wherein in the step of cutting, a force toward a back surface side is applied to the second region and the sheet glass is cut along the scribe line while a back surface of the first region is supported by a back surface support member and the second region is supported by a suction pad and an auxiliary support member extending in a direction along the scribe line. Here, the plate glass has a thickness of 500 μm or less, preferably 300 μm or less. In addition, the plate glass preferably has flexibility.
According to this method, in the cutting step, the second region of the sheet glass is supported by the suction pad and the auxiliary support member extending in the direction along the scribe line, and therefore, as the support portion, a support portion of a preferred embodiment extending in the direction along the scribe line is added to the suction support portion by the suction pad. Therefore, even if the sheet glass is warped, the warp can be sufficiently corrected by adding the support portion according to the above-described preferred embodiment. Since the suction pad draws in the second region, when the auxiliary support member comes into contact with the second region, a drawing force by the suction pad acts on the contact portion, and the second region is strongly pressed against the auxiliary support member. This further makes it possible to sufficiently correct the warpage. As described above, when the plate glass is cut, the bending stress is uniformly applied to the vicinity of the scribe line to perform appropriate cutting, and therefore, a problem such as occurrence of chipping at the cut portion of the plate glass and scattering of a large amount of glass powder is appropriately avoided. It is particularly effective if the warpage of the plate glass is a warpage in which a scribe line and an arbitrary virtual straight line parallel to the scribe line are bent in the surface of the plate glass.
In this method, the suction pad and the auxiliary support member may support the back surface of the second region, and a force may be applied to the second region toward the back surface side by bringing a press-fitting member into contact with the front surface of the second region and pressing the second region toward the back surface side.
In this way, the force directed to the back side can be appropriately applied to the second region by the press-fitting member disposed on the front side in a state where the warpage of the plate glass is sufficiently corrected by the suction pad and the auxiliary support member. Therefore, the plate glass can be stably cut.
In the above method, in the cutting step, the plate glass may be suspended and supported such that the scribe line is oriented in the vertical direction.
In this way, the above-described operational effects in the case where the plate glass is warped can be remarkably obtained. More specifically, when the glass sheet is placed on a surface plate or the like in a flat position and cut, the glass sheet undergoes less warpage, but when the glass sheet is suspended and supported as in the configuration described above, the warpage increases. Even when the warpage of the plate glass is large, the warpage of the plate glass can be appropriately dealt with as described above, and therefore the operational effect thereof becomes extremely remarkable.
In the above method, the auxiliary support member may be disposed at a position separated from the scribe line by a distance shorter than the suction pad.
In this way, the second region is advantageous in the case where the dimension from the scribe line to the end edge portion facing the scribe line is short. In detail, since the suction pad has been used conventionally, there is a preferable position as a suction support position of the suction pad to the back surface of the second region. Therefore, if the auxiliary support member is to be disposed in the second region closer to the end edge portion side than the preferable suction support position, it may be spatially unreasonable. However, according to the configuration described above, the auxiliary support member is disposed on the opposite side of the end portion side from the conventional suction support position, and therefore the above-described problem can be solved. Thus, a significant improvement is not applied to the conventional structure. The auxiliary support member can be additionally arranged.
In contrast to the structure in this method, the auxiliary support member may be disposed at a position separated from the scribe line by a longer distance than the suction pad.
In this way, the effect of correcting a large warp of the sheet glass becomes remarkable. More specifically, the warp of the sheet glass tends to be particularly large at the end edge portion of the second region opposite to the scribe line and in the vicinity thereof. This tendency is particularly remarkable when the edge portion is thicker than the other portions of the second region. According to the relative positional relationship between the suction pad and the auxiliary support member described herein, the auxiliary support member can be brought into contact with the edge portion and the vicinity thereof, and therefore, the above-described particularly large warpage can be sufficiently corrected.
In the above method, the auxiliary support member may be in contact with a region of the back surface of the second region other than both ends in the direction along the scribe line.
In this way, it is advantageous when the end surfaces of the two ends of the second region are the cleaved surfaces. That is, since the cleaved surface has minute cracks or the like, when the auxiliary support member comes into contact with the cleaved surface, minute cracks or the like may progress, and the plate glass may be damaged. However, according to the structure herein, the auxiliary support member does not contact with both ends described above, and therefore such a problem does not occur.
It is also possible to reverse the structure in the method, in which the auxiliary support member is in contact with a region of the back surface of the second region including both ends in the direction of the scribing line.
In this way, the warp of the sheet glass can be corrected by the auxiliary support member over the entire area from the second area to the both ends, and therefore the sheet glass can be cut more appropriately.
In the above method, a contact portion of the auxiliary support member, which contacts the second region, may be formed of a cushioning material.
In this way, for example, the impact when the auxiliary support member comes into contact with the second region can be alleviated by the cushioning material. Therefore, even if the auxiliary support member is brought into contact with the second region at a high speed, the plate glass is less likely to be damaged or damaged, and the work is speeded up.
A second aspect of the present invention made to solve the above problems is an apparatus for manufacturing a sheet glass, comprising a cutting device configured to cut a sheet glass having a scribe line formed on a front surface side of a boundary portion between a first region and a second region along the scribe line, wherein the cutting device is configured to apply a force toward a back surface side to the second region to cut the sheet glass along the scribe line in a state where the back surface of the first region is supported by a back surface support member and the second region is supported by an adsorption pad and an auxiliary support member extending in a direction along the scribe line.
According to this manufacturing apparatus, as in the case of the above-described manufacturing method, the plate glass is appropriately cut, and chipping, scattering of a large amount of glass powder, and the like are prevented from occurring at the time of cutting.
Effects of the invention
According to the present invention, the support of the back surface of the second region of the sheet glass at the time of cutting is favorably performed, so that the sheet glass is appropriately cut along the scribing line.
Drawings
Fig. 1 is a perspective view showing a cleaving apparatus included in a sheet glass manufacturing apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic perspective view showing a main part of a cleaving apparatus included in a sheet glass manufacturing apparatus according to an embodiment of the present invention.
Fig. 3a is a schematic side view of a cleaving apparatus included in the apparatus for manufacturing sheet glass according to the embodiment of the present invention, viewed from the side.
Fig. 3b is an enlarged schematic bottom view of a main part of the cutting apparatus included in the apparatus for manufacturing sheet glass according to the embodiment of the present invention, as viewed from below.
Fig. 4a is a schematic bottom view showing a cleaving step included in the method for manufacturing a sheet glass according to the embodiment of the present invention.
Fig. 4b is a schematic bottom view showing a cleaving step included in the method for manufacturing a sheet glass according to the embodiment of the present invention.
Fig. 4c is a schematic bottom view showing a cleaving step included in the method for manufacturing a sheet glass according to the embodiment of the present invention.
Fig. 5 is a schematic bottom view showing a first modification of the cleaving step included in the method for manufacturing a sheet glass according to the embodiment of the present invention.
Fig. 6 is a schematic bottom view showing a second modification of the cleaving step included in the method for manufacturing a sheet glass according to the embodiment of the present invention.
Fig. 7 is a schematic bottom view showing a third modification of the cleaving step included in the method for manufacturing a sheet glass according to the embodiment of the present invention.
Fig. 8 is a schematic bottom view showing a first modification of the cleaving apparatus included in the apparatus for manufacturing sheet glass according to the embodiment of the present invention.
Fig. 9 is a schematic bottom view showing a second modification of the cleaving apparatus included in the apparatus for manufacturing sheet glass according to the embodiment of the present invention.
Detailed Description
Hereinafter, a method and an apparatus for manufacturing a plate glass according to an embodiment of the present invention will be described with reference to the drawings.
Fig. 1 is a perspective view illustrating a cleaving apparatus 1 included in a sheet glass manufacturing apparatus according to an embodiment of the present invention. As shown in the figure, the plate glass G has a scribe line S formed on the front surface side (one side of the reference numerals Ga and Gx) as a boundary, and one side in the width direction (the arrow a direction side) thereof is defined as a first region G1, and the other side in the width direction (the arrow B direction side) thereof is defined as a second region G2. In this embodiment, first region G1 becomes the product portion and second region G2 becomes the non-product portion. However, both the first region G1 and the second region G2 may be product portions. In the illustrated example, the scribe line S does not reach the upper end and the lower end of the sheet glass G, but may reach the upper end and the lower end.
The plate glass G is suspended and supported so that the scribe line S faces in the vertical direction. The plate thickness of the plate glass G can be set to 200 to 2000 μm, for example. Since the plate glass G is likely to warp, the plate glass G preferably has a thickness of 500 μm or less, more preferably 300 μm or less. Further, the sheet glass G is preferably flexible. In this embodiment, the plate glass G is warped. The warp is curved in a shape of a scribe line S in the surface of the sheet glass G and an arbitrary imaginary straight line parallel to the scribe line S.
The cleaving apparatus 1 cleaves the sheet glass G along the scribing line S by bending stress. In detail, the cleaving apparatus 1 includes: a holding mechanism 2 for suspending the support plate glass G; a rear surface support member 3 that supports the rear surface Gb side of the first region G1; a back auxiliary support mechanism 4 for supporting the back Gy side of the second region G2; and a plate-like member (press-fitting member) 5 that applies a force (press-fitting force) toward the back surface Gy side to the second region G2 while rotating in the arrow C direction in a state of being in contact with the surface Gx of the second region G2.
The gripping mechanism 2 moves the glass sheet G in the width direction while gripping the upper end portion of the first region G1. The gripping mechanism 2 is slidably held by a guide rail (not shown) extending in the width direction above the glass sheet G. When the step of cutting the sheet glass G is performed, the gripping mechanism 2 and the sheet glass G are in a stopped state. The gripping means 2 may be disposed at a plurality of locations in the width direction at the upper end of the first region G1.
The rear surface support member 3 is disposed on the rear surface Gb side of the end of the first region G1 on the scribe line S side. The rear surface support member 3 is a columnar or plate-like body (platform) having a flat support surface for supporting the rear surface Gb of the first region G1 and being elongated in the vertical direction. The shape of the back support member 3 may be a round bar shape or the like. The back support member 3 extends vertically from the upper end Gf and the lower end Gg of the first region G1, but may have a length not reaching the upper end Gf and the lower end Gg.
The rear auxiliary support mechanism 4 includes: a holding base material 6 which is long in the vertical direction; an adsorption pad 7 mounted on the holding base 6; and an auxiliary support member 8 fixed to the holding base material 6. The holding base material 6 is configured to move by the operation of a driving mechanism (not shown) such as a robot arm.
Fig. 2 illustrates a detailed structure of the rear auxiliary support mechanism 4. As shown in the figure, a plurality of (5 in the drawing) adsorption pads 7 are arranged at equal intervals in the vertical direction on the front side of the holding base 6. The suction pad 7 is formed of an elastic member such as rubber or resin that can expand and contract, and suctions and supports the back surface Gy of the second region G2 by negative pressure. Further, an auxiliary support member 8 elongated in the vertical direction is disposed on the front side of the holding base 6. The auxiliary support member 8 is fixed to the front surface of the holding base material 6, and supports the back surface Gy of the second region G2 in contact therewith. The end surface 8a of the auxiliary support member 8 that contacts the second region G2 becomes a flat surface, and the auxiliary support member 8 thus makes surface contact with the back surface Gy of the second region G2. The contact portion of the auxiliary support member 8 with the second region G2 is formed by a cushion material 8x made of foamed resin or the like typified by PP foam boards. The cushion material 8x is attached to the front end of a plate-shaped base body 8y, and the plate-shaped base body 8y is made of a metal material (e.g., aluminum, an aluminum alloy, or various steels) or a material having the same degree of rigidity as that of the metal material. The region of the back surface Gy of the second region G2, which the auxiliary support member 8 contacts, is set as a region other than the upper end Gf and the lower end Gg of the second region G2. In this embodiment, the auxiliary support member 8 is disposed on the holding base 6 so as to be separated from the scribe line S by a shorter distance than the suction pad 7. That is, the auxiliary support member 8 is disposed between the suction pad 7 and the scribing line S in the width direction of the sheet glass G. The auxiliary support member 8 extends continuously in the direction along the scribe line S, but may extend in the direction along the scribe line S at predetermined intervals. In other words, the auxiliary support member 8 may be divided into a plurality of pieces in the direction along the scribe line S. Here, the scribe line S is formed on the plate glass G which is not warped at all as shown in fig. 2.
As shown in fig. 1, the plate-like member 5 is disposed on the surface Gx side of the second region G2. In this embodiment, the plate-like member 5 is a flat plate that is flat on the side in contact with the surface Gx of the second region G2 and is long in the vertical direction. The plate-like member 5 vertically protrudes from the upper end Gf and the lower end Gg of the second region G2, but may have a length not reaching the upper end Gf and the lower end Gg. A belt roller member 9 for detachably holding the plate-like member 5 is disposed on the front side of the plate-like member 5. The belt roller member 9 includes: a roller 10 extending in a direction along the scribing line S; a plurality of (5 in the drawing) rollers 11 arranged at equal intervals in the axial direction of the roller shaft 10; and a support body 12 that supports the roller shaft 10. Note that, the scribe line S here is also a scribe line S in the case where the plate glass G is not warped at all, as in the case described above. In this embodiment, the plate-like member 5 is connected to the roller shaft 10 using a binding band 13. The binding band 13 can be wound and unwound across the plate-like member 5 and the roller shaft 10, whereby the plate-like member 5 can be attached to and detached from the roller member 9. The support body 12 is configured to move by the operation of a driving mechanism (not shown) such as a robot arm, and the belt roller member 9 moves in synchronization with the plate-like member 5. Here, the roller shaft 10 and the roller 11 are configured to move straight in the direction D. The D direction is a direction orthogonal to the surface Gx of the second region G2. The surface Gx of the second region G2 referred to herein is the surface Gx before the cleaving step of the second region G2 in the case where no warpage is present at all.
Next, a method for manufacturing a plate glass using the manufacturing apparatus configured as described above will be described.
First, in the step on the upstream side of the position shown in fig. 1, the scribing line S is formed on the surface Gx of the sheet glass G by pressing with a wheel cutter, irradiation of laser light, or the like in a state where the sheet glass G is suspended and supported by the holding mechanism 2. Next, the glass sheet G on which the scribing line S is formed is conveyed in the width direction while being suspended and supported by the holding mechanism 2, and is stopped. At the time when the sheet glass G stops, as shown in fig. 1, the back surface support member 3 moves toward the front side and contacts the back surface Gy of the first region G1 of the sheet glass G. In addition, the belt roller member 9 moves on the back side, so that the plate-like member 5 comes into contact with the surface Gx of the second region G2. Then, the holding base material 6 of the rear auxiliary supporting mechanism 4 moves toward the front side, and the suction pad 7 and the auxiliary supporting member 8 come into contact with the rear surface Gy of the second region G2.
Thereafter, the suction pad 7 sucks the second area G2, thereby assisting the support member 8 in making firm ground contact with the back surface Gy of the second area G2. At the same time, the plate-like member 5 presses the second region G2 to the back side, so that the plate-like member 5 comes into surface contact with the surface Gx of the second region G2. With this state maintained, the plate-like member 5 gradually pushes the second region G2 toward the back surface Gy side. At this stage, the periphery of the support portion Gw of the second region G2 supported by the suction pad 7 and the auxiliary support member 8 has a flat shape with almost no warpage in the side view shown in fig. 3a and the bottom view shown in fig. 3 b. In this case, if the back surface Gy of the second region G2 is supported by suction only by the suction pad as disclosed in patent document 1, the supported elements (the elements described above) are insufficient, and the warpage of the second region G2 cannot be sufficiently corrected. Therefore, it is difficult to generate uniform bending stress in the vicinity of the scribing line S at the time of cutting the sheet glass G. In contrast, when the suction pad 7 and the auxiliary support member 8 support the rear surface Gy of the second region G2, the number of support sites can be increased, and the warpage of the second region G2 can be reduced. Since the auxiliary support member 8 extends in the direction along the scribe line S, a support portion of a preferred embodiment extending in the direction along the scribe line S is added to the suction support portion by the suction pad 7 as a support portion of the rear auxiliary support mechanism 4. Therefore, the warpage of the second region G2 is sufficiently corrected by the addition of the support portion in the above-described preferred embodiment. Since the suction pad 7 pulls in the second region G2, when the auxiliary support member 8 comes into contact with the second region G2, a pulling force by the suction pad 7 acts on the contact portion, and the second region G2 is strongly pressed against the auxiliary support member 8 (the cushion material 8 x). This further makes it possible to sufficiently correct the warpage. As described above, when the sheet glass G is cut, the bending stress is uniformly applied in the vicinity of the scribing line S to perform the appropriate cutting, and therefore, the occurrence of defects such as chipping and scattering of a large amount of glass frit at the cut portion of the sheet glass G can be effectively avoided. In this embodiment, the plate-like member 5 is in surface contact with the surface Gx of the second region G2, and the warp of the second region G2 is also corrected, so that the glass sheet G is further appropriately cut.
Fig. 4a, 4b, and 4c illustrate in time series a step of gradually cutting the sheet glass G by pushing the second region G2 toward the rear surface Gy side by the movement of the suction pad 7, the auxiliary support member 8, and the plate-like member 5. First, as shown in fig. 4a, the belt roller member 9 and the rear auxiliary support mechanism 4 are moved to bring the plate-like member 5 into surface contact with the front surface Gx of the second region G2, the suction pad 7 supports the rear surface Gy of the second region G2 by suction, and the auxiliary support member 8 supports the rear surface Gy of the second region G2 by contact. At this time, the roller 11 is in contact with the plate-like member 5, and both the plate-like member 5 and the holding base material 6 are in a non-inclined state (a state parallel to the surface Gx of the first region G1). This state will be referred to as an initial state hereinafter.
Next, as shown in fig. 4b, the roller 11 moves straight in the direction D, so that the plate-like member 5 maintains a state of surface contact with the surface Gx of the second region G2 and rotates about the roller shaft 10 (axis 9 a). In this way, while the plate-like member 5 is rotating, the angle of the plate-like member 5 changes following the change in the angle of the second region G2. At the same time, the holding base material 6 moves along a predetermined curved trajectory, and the angle of the holding base material 6 changes following the change in the angle of the second region G2. The predetermined curved trajectory referred to herein is, for example, a curved trajectory such as a circular trajectory centered around the vicinity of the back surface support member 3 or the vicinity of the scribe line S, or a trajectory similar to the circular trajectory. Thereby, the sheet glass G is bent with the rear surface support member 3 as a starting point. In this process, since the second region G2 has a nearly flat shape from the surface contact portion Gw with the plate-like member 5 to the scribe line S, the vicinity of the scribe line S in the second region G2 has a shape that is bent nearly to bend, i.e., a shape that is curved with a large curvature. Here, a bending line W indicated by a chain line in the figure depicts a shape when the surface Gx of the second region G2 is bent only by the roller 11 and the suction pad 7 as disclosed in patent document 1. In this bending line W, the vicinity of the scribing line S of the second region G2 is bent with a small curvature. When the curved portion is curved with a large curvature, the bending stress acting in the vicinity of the scribing line S becomes large as compared with the case where the vicinity of the scribing line S is curved with a small curvature.
Thereafter, the roller 11 further moves straight in the direction D, the second region G2 is further pushed toward the back surface Gy side, and the sheet glass G is cut along the scribe line S as shown in fig. 4c when the bending stress acting in the vicinity of the scribe line S becomes sufficiently large. In this case, as described with reference to fig. 4b, when the second region G2 is flexed, the region from the surface contact portion Gw of the second region G2 to the scribe line S has a nearly flat shape. Therefore, even if the distance for linearly moving the roller 11 in the D direction is short, the sheet glass G can be cut. This shortens the time required for cutting the sheet glass G, improves the work efficiency, and also achieves compactness of the mechanism for moving the belt roller member 9 and the mechanism for moving the back auxiliary support mechanism 4. After the sheet glass G is cut and the second region G2 is separated from the first region G1, the second region G2 does not fall down, but is maintained in a state of being sucked and held by the suction pad 7. After the second area G2 is conveyed to the retracted position where it does not affect the first area G1, the suction by the suction pads 7 is released, and the second area G2 is dropped and collected.
Instead of the above-described exemplary configuration, the plate-like member 5 may be in contact with the surface Gx of the second region G2 including the end edge Gz facing the scribe line S as shown in fig. 5. Specifically, the end edge Gz (a region called an ear) of the second region G2 is thicker than other regions of the second region G2. In the illustrated state, the length of the second region G2 in the width direction (the distance from the end edge Gz to the scribe line S) is short. Even under such conditions, as shown in the drawing, the sheet glass G can be appropriately cut by supporting the rear surface Gy of the second region G2 by the suction pad 7 and the auxiliary support member 8.
The apparatus and method for manufacturing a sheet glass according to the above embodiments can be modified in structure as described below. That is, first, the binding band 13 of the band roller member 9 is unwound, and the plate-like member 5 is removed. Thereafter, as shown in fig. 6, the roller 11 is rollably brought into contact with the surface Gx of the second region G2, and the back surface Gy of the second region G2 is supported by the adsorption pad 7 and the auxiliary support member 8. The second region G2 is flexed as in the above-described state shown in fig. 4b, and the sheet glass G is cut as in the above-described state shown in fig. 4c when the bending stress acting on the scribe line S has a sufficient magnitude.
The apparatus and method for manufacturing sheet glass according to the above embodiments can be applied not only to the case where the sheet glass G is cut at one portion but also to the case where the sheet glass G is cut at two portions as described below. That is, as shown in fig. 7, the center region in the width direction of the sheet glass G is set as a first region G1, the scribe lines S are formed on both sides thereof, and the outer regions in the width direction of each scribe line S are set as second regions G2. The belt roller members 9 are disposed on the front surface Gx side of each second region G2, and the rear auxiliary support mechanisms 4 are disposed on the rear surface Gy side of each second region G2. The rear surface support members 3 are disposed on the rear surface Gb side at both ends in the width direction of the first region G1. In this case, with reference to each belt roller member 9, the center side in the width direction is the arrow a direction side in fig. 1 and both outer sides in the width direction are the arrow B direction sides in fig. 1. On the premise of these, substantially the same operation as the above-described operation is performed on both sides of the sheet glass G in the width direction, and substantially the same effect as the above-described effect is obtained.
According to the above embodiment, the following effects can be obtained in addition to the effects already described. That is, in the above embodiment, since the plate glass G is suspended and supported so that the scribe line S is directed in the vertical direction (see fig. 1), an effect can be remarkably obtained in the case where the plate glass G is largely warped. More specifically, the warp of the sheet glass G is small when the sheet glass G is cut while being placed in a flat posture, but the warp is large when the sheet glass G is suspended and supported. Even when the sheet glass G is warped to a large extent as described above, the operational effect is remarkably exhibited because the sheet glass G can appropriately cope with the warp as described above.
In the above embodiment, the auxiliary support member 8 is disposed at a position (see fig. 2 and the like) where the separation distance from the scribe line S is shorter than the suction pad 7, and therefore, it is advantageous in the case where the dimension from the scribe line S to the end edge portion Gz opposed to the scribe line S of the second region G2 is shorter. In detail, since the suction pad 7 has been used conventionally, there is a preferable position as a suction supporting position of the suction pad 7 with respect to the back surface Gy of the second region G2. Therefore, if the auxiliary support member 8 is to be disposed in the second region G2 on the side of the edge Gz with respect to the preferable suction support position, it may be spatially inappropriate. However, since the auxiliary support member 8 is disposed on the opposite side of the end edge Gz side from the conventional suction support position according to the relative positional relationship, such a problem can be solved. Thus, a significant improvement is not applied to the conventional structure. The auxiliary support member 8 can be added and arranged.
In the above embodiment, the auxiliary support member 8 is in contact with the region other than the upper end Gf and the lower end Gg of the back surface Gy of the second region G2 (see fig. 2 and the like), and therefore, is advantageous when the end surfaces of the upper end Gf and the lower end Gg are cleaved surfaces. That is, since the cleaved surface has cracks or the like, when the auxiliary support member 8 comes into contact with the cleaved surface, the cracks or the like may progress to damage the sheet glass G. However, in the structure here, the auxiliary support member 8 does not contact the upper end Gf and the lower end Gg, and therefore such a problem does not occur.
In the above embodiment, since the contact portion of the auxiliary support member 8 with the second region G2 is formed by the cushion material 8x, the impact when the auxiliary support member 8 contacts the second region G2 can be alleviated by the cushion material 8 x. Therefore, even if the auxiliary support member 8 is brought into contact with the second region G2 at a high speed, the plate glass G is less likely to be damaged or damaged, and the operation is speeded up.
In the above embodiment, the auxiliary support member 8 is disposed at a position having a shorter separation distance from the scribe line S than the suction pad 7, but conversely, as shown in fig. 8, the auxiliary support member 8 may be disposed at a position having a longer separation distance from the scribe line S than the suction pad 7. In this way, the effect of correcting a large warp of the sheet glass G becomes remarkable. Specifically, the warp of the sheet glass G tends to be particularly large in the end edge Gz of the second region G2 facing the scribe line S and in the vicinity thereof. This tendency is particularly remarkable when the end edge Gz is thicker than the other portions of the second region G2 as shown in the drawing. According to the relative positional relationship between the suction pad 7 and the auxiliary support member 8, the auxiliary support member 8 can be brought into contact with the vicinity of the end edge Gz, and therefore the large warpage described above can be sufficiently corrected.
In the above embodiment, the auxiliary support member 8 is in contact with the region other than the upper end Gf and the lower end Gg of the back surface Gy of the second region G2, but conversely, as shown in fig. 9, the auxiliary support member 8 may be in contact with the region including the upper end Gf and the lower end Gg. In this way, the warp of the sheet glass G can be corrected by the auxiliary support member 8 over the entire region from the upper end Gf to the lower end Gg of the second region G2, and therefore the sheet glass G can be cut more appropriately.
In the above embodiment, the warp of the sheet glass G is a shape in which the scribe line S and an arbitrary virtual straight line parallel to the scribe line S in the surface of the sheet glass G are curved, but may be a warp having a shape different from this.
In the above embodiment, the plate glass G is suspended and supported in the vertical posture, but the plate glass G may be laid horizontally in the horizontal posture (preferably, horizontal posture).
In the above embodiment, the front surface Gx of the second region G2 of the sheet glass G is pushed toward the back surface Gy by the pushing member such as the plate-like member 5 or the roller 11, but the pushing member may be eliminated and the second region G2 may be drawn only by the back surface auxiliary support mechanism 4. In this case, a pulling force toward the back surface Gy side acts on the second region G2. Alternatively, the suction pad 7 and the auxiliary support member 8 may be pressed toward the back surface Gy while the suction pad 7 and the auxiliary support member 8 support the surface Gx of the second region G2 of the plate glass G.
Further, the back auxiliary support mechanism 4 moves both the suction pad 7 and the auxiliary support member 8 in synchronization by attaching the suction pad 7 and the auxiliary support member 8 to the holding base 6, but may move both the suction pad 7 and the auxiliary support member 8 in synchronization in a separated state.
Description of the reference numerals
1 apparatus for producing sheet glass (cutting apparatus)
3 Back support Member
4 back auxiliary supporting mechanism
6 holding base Material
7 adsorption pad
8 auxiliary support member
8x buffer material
G plate glass
G1 first region
G2 second region
Back side of Gb first region
Back of Gy second region
End edge part of Gz second region
And S, scribing.
Claims (9)
1. A method for manufacturing a plate glass, comprising a cutting step of forming a scribe line on a surface side of a boundary portion between a first region and a second region of the plate glass and cutting the plate glass along the scribe line,
the method for producing a sheet glass is characterized in that,
in the cutting step, a force directed toward the back side is applied to the second region in a state where the back surface of the first region is supported by a back surface support member and the second region is supported by an adsorption pad and an auxiliary support member extending in the direction along the scribe line, thereby cutting the plate glass along the scribe line.
2. The method for producing a sheet glass according to claim 1,
the adsorption pad and the auxiliary support member support a back surface of the second region,
the second region is pressed toward the back surface side by bringing the press-fitting member into contact with the surface of the second region, and a force toward the back surface side acts on the second region.
3. The sheet glass manufacturing method according to claim 1 or 2,
in the cutting step, the plate glass is suspended and supported so that the scribe line is directed in the vertical direction.
4. The method for producing a sheet glass according to any one of claims 1 to 3,
the auxiliary support member is disposed at a position having a shorter separation distance from the scribe line than the suction pad.
5. The method for producing a sheet glass according to any one of claims 1 to 3,
the auxiliary support member is disposed at a position separated from the scribe line by a distance longer than the suction pad.
6. The method for producing a sheet glass according to any one of claims 1 to 5,
the auxiliary support member is in contact with a region of the back surface of the second region other than both ends in the direction of the scribe line.
7. The method for producing a sheet glass according to any one of claims 1 to 5,
the auxiliary support member is in contact with a region of the back surface of the second region including both ends in the direction of the scribing line.
8. The method for producing a sheet glass according to any one of claims 1 to 7,
a contact portion of the auxiliary support member that contacts the second region is formed of a cushioning material.
9. A plate glass manufacturing device is provided with a cutting device for cutting plate glass with a scribing line formed on the surface side of a boundary part of a first region and a second region along the scribing line,
the apparatus for manufacturing a sheet glass is characterized in that,
the cutting device is configured to apply a force to the second region toward the back side in a state where the back surface of the first region is supported by a back surface support member and the second region is supported by an adsorption pad and an auxiliary support member extending in the direction along the scribe line, and to cut the sheet glass along the scribe line.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019185422A JP7395117B2 (en) | 2019-10-08 | 2019-10-08 | Method for manufacturing plate glass and its manufacturing device |
| JP2019-185422 | 2019-10-08 | ||
| PCT/JP2020/034955 WO2021070583A1 (en) | 2019-10-08 | 2020-09-15 | Method of manufacturing flat glass and apparatus for manufacturing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114302866A true CN114302866A (en) | 2022-04-08 |
Family
ID=75381768
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080059233.2A Pending CN114302866A (en) | 2019-10-08 | 2020-09-15 | Method and apparatus for manufacturing sheet glass |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP7395117B2 (en) |
| KR (1) | KR20220080072A (en) |
| CN (1) | CN114302866A (en) |
| WO (1) | WO2021070583A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113263634B (en) * | 2021-06-01 | 2022-12-06 | 江苏苏华达新材料有限公司 | Glass processing technology |
| JP2023002006A (en) * | 2021-06-22 | 2023-01-10 | 日本電気硝子株式会社 | Method for producing plate glass, apparatus for producing plate glass, and plate glass |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04280828A (en) * | 1991-03-08 | 1992-10-06 | Asahi Glass Co Ltd | Cutting of plate glass and device therefor |
| JPH05132328A (en) * | 1991-11-07 | 1993-05-28 | Asahi Glass Co Ltd | Method for cutting glass plate and device therefor |
| CN103502162A (en) * | 2011-09-02 | 2014-01-08 | 日本电气硝子株式会社 | Device for cutting sheet glass |
| CN106604897A (en) * | 2014-12-22 | 2017-04-26 | 日本电气硝子株式会社 | Glass plate manufacturing apparatus |
| JP2017226549A (en) * | 2016-06-20 | 2017-12-28 | 日本電気硝子株式会社 | Manufacturing method of sheet glass and manufacturing apparatus of the same |
| CN108137373A (en) * | 2015-12-21 | 2018-06-08 | 日本电气硝子株式会社 | The manufacturing device of glass plate |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4280828B2 (en) | 2004-03-24 | 2009-06-17 | 独立行政法人産業技術総合研究所 | Gas replacement type occlusion discharge NOx treatment method and apparatus |
| JP5132328B2 (en) | 2008-01-16 | 2013-01-30 | Ｕｄトラックス株式会社 | clip |
| US9862634B2 (en) | 2011-08-12 | 2018-01-09 | Corning Incorporated | Method and apparatus for removing peripheral portion of a glass sheet |
-
2019
- 2019-10-08 JP JP2019185422A patent/JP7395117B2/en active Active
-
2020
- 2020-09-15 KR KR1020227004823A patent/KR20220080072A/en unknown
- 2020-09-15 CN CN202080059233.2A patent/CN114302866A/en active Pending
- 2020-09-15 WO PCT/JP2020/034955 patent/WO2021070583A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04280828A (en) * | 1991-03-08 | 1992-10-06 | Asahi Glass Co Ltd | Cutting of plate glass and device therefor |
| JPH05132328A (en) * | 1991-11-07 | 1993-05-28 | Asahi Glass Co Ltd | Method for cutting glass plate and device therefor |
| CN103502162A (en) * | 2011-09-02 | 2014-01-08 | 日本电气硝子株式会社 | Device for cutting sheet glass |
| CN106604897A (en) * | 2014-12-22 | 2017-04-26 | 日本电气硝子株式会社 | Glass plate manufacturing apparatus |
| CN108137373A (en) * | 2015-12-21 | 2018-06-08 | 日本电气硝子株式会社 | The manufacturing device of glass plate |
| JP2017226549A (en) * | 2016-06-20 | 2017-12-28 | 日本電気硝子株式会社 | Manufacturing method of sheet glass and manufacturing apparatus of the same |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20220080072A (en) | 2022-06-14 |
| JP2021059477A (en) | 2021-04-15 |
| JP7395117B2 (en) | 2023-12-11 |
| WO2021070583A1 (en) | 2021-04-15 |
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