CN110023255B - Method for manufacturing glass plate and device for breaking glass plate - Google Patents
Method for manufacturing glass plate and device for breaking glass plate Download PDFInfo
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- CN110023255B CN110023255B CN201780074248.4A CN201780074248A CN110023255B CN 110023255 B CN110023255 B CN 110023255B CN 201780074248 A CN201780074248 A CN 201780074248A CN 110023255 B CN110023255 B CN 110023255B
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- main surface
- glass plate
- product portion
- breaking
- scribe line
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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
- C03B33/03—Glass cutting tables; Apparatus for transporting or handling sheet glass during the cutting or breaking operations
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- 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
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The glass plate (G) has a product portion (Ga) and a non-product portion (Gb) which are defined by a scribe line (S) formed on a first main surface (G1), and the glass plate (G) is broken along the scribe line (S) by pressing the second main surface (G2) of the glass plate (G) toward the first main surface (G1) by a breaking member (51) at a position corresponding to the scribe line (S) in a state where the first main surface (G1) of the product portion (Ga) in the glass plate (G) is pressed by a first pressing member (31) and the first main surface (G1) of the non-product portion (Gb) in the glass plate (G) is pressed by a second pressing member (41). The first pressing member (31) is formed of a brush-shaped member, and the second pressing member (41) is formed of a cylindrical elastic member.
Description
Technical Field
The present invention relates to a method for manufacturing a glass plate and a device for breaking a glass plate.
Background
As is well known, glass plates are used in various fields, as represented by glass substrates for Flat Panel Displays (FPDs) such as liquid crystal displays, plasma displays, and organic EL displays, and glass covers for organic EL illumination. The glass plate manufacturing process includes a breaking (cutting) step of cutting a small-area glass plate from a large-area glass plate (mother glass) or trimming an edge portion along an edge of the glass plate.
In the breaking step, a scribe line is formed on a first main surface (for example, an upper surface) of the glass sheet at a boundary between a product portion and a non-product portion of the glass sheet to be broken, and then a bending stress is applied around the scribe line to break the glass sheet along the scribe line.
Specifically, for example, patent document 1 discloses the following technique: in a state where the upper surface of the edge portion (also referred to as an ear portion) of the glass plate having the scribe line formed on the upper surface thereof, which is to become the non-product portion, is pressed by the upper pressing lever, the lower surface of the glass plate is pushed upward by the lower pressing lever at a position corresponding to the scribe line, and the glass plate is broken along the scribe line. A flat rubber sheet is attached to the lower surface of the upper pressing lever.
Prior art documents
Patent document
Patent document 1: japanese patent laid-open No. 2007 and 99563
Disclosure of Invention
Problems to be solved by the invention
However, as disclosed in patent document 1, when a bending stress is applied around the scribe line, if only the upper surface of the non-product portion is pressed, the holding force of the upper surface of the product portion is weak, and the glass sheet may not be accurately broken along the scribe line. In particular, when the glass plate is thin and flexible, such a problem becomes remarkable. Here, it is also conceivable that the upper surface of the product portion is pressed by the rubber sheet as in the non-product portion, but the product portion may be contaminated or scratched.
Further, as disclosed in patent document 1, when the size (width in the direction orthogonal to the scribe line) of the non-product portion is changed by changing the kind of the glass plate or the like when the upper surface of the non-product portion is pressed by the flat rubber sheet, one side corner portion of the rubber sheet easily hits the upper surface of the non-product portion, or the pressed state easily becomes unstable. Therefore, the position at which the upper surface of the non-product portion is pressed needs to be adjusted according to the size of the non-product portion, but this adjustment operation requires time. During this time, the glass plate cannot be broken, and thus there is a problem that the manufacturing efficiency is deteriorated.
The invention aims to prevent the pollution and the scratch of a product part and to break a glass plate along a scribing line efficiently and reliably even if the size of a non-product part is changed.
Means for solving the problems
The present invention, which has been made in order to solve the above problems, is a method for manufacturing a glass sheet having a product portion and a non-product portion defined by scribe lines formed on a first main surface, the method for manufacturing a glass plate comprises a breaking step of pressing the first main surface of the product part in the glass plate by a first pressing member and pressing the first main surface of the non-product part in the glass plate by a second pressing member, pressing the second main surface of the glass plate against the first main surface side by a breaking member at a position corresponding to the scribe line to break the glass plate along the scribe line, the method for manufacturing a glass plate is characterized in that the first pressing member is formed of a brush-shaped member, the second pressing member is formed of an elastic member, and at least a surface of the elastic member facing the first main surface is a convex curved surface. According to this configuration, the first main surface of the product portion is pressed with assistance by the first pressing member formed of the brush-like member. Further, since the brush member is used, the contact state with the product portion is gentle, and unnecessary contamination or damage to the product portion is not easily caused. On the other hand, the first main surface of the non-product portion is firmly pressed by the second pressing member made of the elastic member. Therefore, a sufficient pressing force can be applied to the entire first main surface of the glass plate. Therefore, when the breaking member is pressed, the bending stress centered on the scribe line can be sufficiently applied, and the glass sheet can be reliably broken along the scribe line. Further, since the surface of the second pressing member facing the first main surface is a convex curved surface, the pressing state is not easily unstable even if the contact position of the second pressing member with the first main surface of the non-product portion is changed. Therefore, even when the size of the product portion is changed due to a change in the kind of the glass plate or the like, the position of the second pressing member may not be adjusted.
In the above configuration, the second pressing member is preferably in the shape of a long cylinder along the scribe line. In this way, the convex curved surface can be simply formed on the elastic member. In addition, since the thickness of the elastic member is easily increased to increase the amount of deformation, the pressing state of the first main surface of the non-product portion can be further stabilized.
In the above configuration, it is preferable that the second pressing member is fitted and held in a recess formed in the holding member. Thus, the elastic member can be held at low cost with a simple structure.
In the above configuration, it is preferable that a surface of the breaking member facing the second main surface includes: planar portions that span both sides of the scribe line; and a pair of inclined portions inclined on both sides of the planar portion so as to be spaced apart from the second main surface. Thus, there are the following advantages. First, since the width of the flat surface portion is wider than the line width of the scribe line, the pair of breaking members can be easily positioned at the position corresponding to the scribe line on the second main surface of the glass plate. In other words, the positional deviation of the glass plate is easily absorbed. Second, since the second main surface is reliably pressed by the flat portion at a position corresponding to the scribe line, the scribe line easily proceeds straight (vertically) from the first main surface toward the second main surface. In this case, the two connecting portions between the flat portion and the two inclined portions, and the first pressing member and the second pressing member serve as supporting points, respectively, and a load mode that is preferable for four-point bending can be expected for the glass plate. Third, since the cut end surface of the product portion and the cut end surface of the non-product portion are pushed apart by the flat surface portion immediately after the product portion is cut, the two cut end surfaces can be prevented from interfering with each other and causing a flaw. Fourth, the inclined portion can prevent the glass plate from being sharply bent. That is, it is possible to prevent an improper stress from being applied to the scribe line. When the glass plate is thin, the flexibility of the glass plate is high, and therefore, this effect of the inclined portion is particularly useful.
The present invention made in order to solve the above problems is a glass plate breaking device for breaking a glass plate having a product portion and a non-product portion defined by a scribe line formed on a first main surface along the scribe line, the glass plate breaking device comprising: a first pressing member that presses a first main surface of the product portion; a second pressing member that presses the first main surface of the non-product portion; and a breaking member that presses the second main surface of the glass plate toward the first main surface at a position corresponding to the scribe line, wherein the first pressing member is formed of a brush-shaped member, the second pressing member is formed of an elastic member, and at least a surface of the elastic member facing the first main surface is a convex curved surface. With this configuration, the same effects as those of the corresponding configurations described above can be obtained.
Effects of the invention
As described above, according to the present invention, it is possible to prevent contamination of the product portion and to efficiently and reliably break the glass plate along the scribe line even if the size of the non-product portion is changed.
Drawings
Fig. 1 is a side view showing a glass plate breaking device and its operation according to an embodiment of the present invention.
Fig. 2 is a plan view showing the relationship between the elastic member and the brush member included in the breaking device of fig. 1 and the glass plate.
Fig. 3 is a side view showing the breaking device for glass plate and its operation according to the present embodiment.
Fig. 4 is a side view showing the breaking device for glass plate and its operation according to the present embodiment.
Fig. 5 is a side view showing the breaking device for glass plate and its operation according to the present embodiment.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in fig. 1, the glass-plate breaking apparatus 1 of the present embodiment breaks a glass plate G along a scribe line S.
The glass sheet G is disposed in a flat posture (preferably, a horizontal posture), and the first main surface G1 on which the scribe line S is formed is an upper surface and the second main surface G2 is a lower surface. The glass sheet G is divided into a product portion Ga and a non-product portion Gb with a scribe line S as a boundary. The dimension of the non-product portion Gb in the X direction is changed, for example, within a range of 30mm to 200 mm. The non-product portion Gb may include a thick portion (not shown) having a larger plate thickness than the product portion Ga. The thick portion of the non-product portion Gb may be generated when the glass sheet G is formed by using an overflow down-draw method, a float method, or the like, for example.
The breaking device 1 includes a conveyance mechanism 2, a first pressing mechanism 3, a second pressing mechanism 4, a breaking mechanism 5, and a removing mechanism 6. In the present embodiment, the glass plate G is broken along the scribe line S located on the downstream side in the conveyance direction (X direction) of the glass plate G, but the present invention is not limited to this.
The conveyance mechanism 2 conveys the glass sheet G in the conveyance direction and stops the glass sheet G at a predetermined position. The conveying mechanism 2 includes a first belt conveyor 21 disposed on the upstream side and a second belt conveyor 22 disposed on the downstream side. The first belt conveyor 21 and the second belt conveyor 22 are disposed at intervals in the conveying direction, and a breaking space B is formed between the first belt conveyor 21 and the second belt conveyor 22. The first belt conveyor 21 and the second belt conveyor 22 are driven at the same speed in the a direction and the b direction when conveying the glass sheet G to the downstream side. On the other hand, when the score line S reaches a predetermined position in the breaking space B, the first belt conveyor 21 and the second belt conveyor 22 stop the conveyance of the glass sheet G. The conveying mechanism 2 is not particularly limited to the belt conveyor. For example, a roller conveyor, a robot, or the like may be used.
The first pressing mechanism 3 includes a first pressing member 31 that can be raised and lowered in the vertical direction, and the first pressing member 31 presses the first main surface G1 of the product portion Ga on the first belt conveyor 21. The first pressing member 31 is constituted by a brush-like member. The bristles have elasticity and deflect in a manner following the first main surface G1 of the product portion Ga. That is, the brush follows the fine movement (including deformation) of the glass plate G. The brush is made of resin fibers such as nylon.
The second pressing mechanism 4 includes a second pressing member 41 that can be vertically moved up and down, and the second pressing member 41 presses the first main surface G1 of the non-product portion Gb on the second belt conveyor 22. The second pressing member 41 is made of rubber (elastic member) having a convex curved surface at least on the surface facing the first main surface G1. The rubber elastically deforms in conformity to the second main surface G2 of the glass sheet G, and therefore, also follows the fine movement (including deformation) of the glass sheet G. The rubber is formed in a rod shape, specifically, a cylindrical shape in the present embodiment, but may be formed in a semi-cylindrical shape, a cylindrical shape, or the like. As the rubber, for example, natural rubber, synthetic rubber, or the like can be used. As the cylindrical elastic member, for example, a vinyl polymer covering the outer surface of a steel pipe can be used in an ethylene steel pipe. The elastic member is not limited to rubber, and may be sponge or the like.
The second pressing mechanism 4 further includes a holding member 42, and the holding member 42 has a recess 42a on a surface facing the first main surface G1 of the non-product portion Gb. The second pressing member 41 is fitted into the recess 42a of the holding member 42. In the present embodiment, the recess 42a is formed by a dovetail groove, and the groove width of the portion of the recess 42a that is open on the first main surface G1 side is smaller than the maximum diameter (diameter) of the second pressing member 41. In this state, the maximum diameter portion of the second pressing member 41 is accommodated in the recess 42a, and a portion of the second pressing member 41 other than the maximum diameter portion protrudes outside the recess 42 a. In this state, the second pressing member 41 may be bonded to the concave portion 42 a.
The breaking mechanism 5 is disposed in the breaking space B. The breaking mechanism 5 includes a breaking member 51 that can be vertically moved up and down, and the breaking member 51 pushes up the second main surface G2 of the glass sheet G at a position directly below the scribe line S. The surface of the break-off member 51 facing the second main surface G2 includes: planar portions 51a that span both sides of the scribe line S (both sides in the X direction orthogonal to the scribe line S); and a pair of inclined portions 51b inclined downward on both sides of the planar portion 51a so as to be spaced apart from the second main surface G2. In the present embodiment, the cross-sectional shape of the surface of the break-off member 51 facing the second main surface G2 is an isosceles trapezoid. The dimension of the planar portion 51a in the X direction is preferably 3 to 15 mm. The flat surface portion 51a is preferably a horizontal surface. The angle θ formed by the planar portion 51a and the inclined portion 51b is preferably 30 ° to 50 °.
The removing mechanism 6 is a mechanism for removing the non-product portions Gb from the second belt conveyor 22 after breaking the glass sheet G along the scribe line S. In the present embodiment, the removing mechanism 6 includes a first suction member 61 disposed on the upstream side in the conveying direction and a second suction member 62 disposed on the downstream side in the conveying direction. When the non-product portion Gb of the glass sheet G is large, after the glass sheet G is broken, the non-product portion Gb is sucked and held by the first suction member 61 and the second suction member 62 and lifted up, and the non-product portion Gb is removed from the second belt conveyor 22. On the other hand, when the non-product portion Gb of the glass sheet G is small, after the glass sheet G is broken, the non-product portion Gb is sucked and held only by the first suction member 61 and lifted up, and the non-product portion Gb is removed from the second belt conveyor 22. The first suction member 61 and the second suction member 62 have a corrugated shape, and the posture of the suction surface can be changed according to the inclination of the non-product portion Gb. The removed non-product portions Gb are reused as glass raw materials by, for example, grinding. The holding method of the removing mechanism 6 for holding the non-product portions Gb is not limited to adsorption. For example, the non-product portion Gb may be held by being held by a chuck or the like or by being hooked by a claw or the like. Further, as the removing means, the non-product portions Gb may be dropped and collected from the second belt conveyor 22 by, for example, inclining the second belt conveyor 22.
As shown in fig. 2, the first pressing member 31, the second pressing member 41, and the breaking member 51 are elongated bodies extending in a direction along the scribe line S (a width direction (Y direction) orthogonal to the conveying direction). In the present embodiment, the first pressing member 31, the second pressing member 41, and the breaking member 51 are continuously in contact with the glass sheet G over the entire width of the glass sheet G. In the present embodiment, the first pressing member 31, the second pressing member 41, and the breaking member 51 are longer than the entire width of the glass plate G, but at least one of these members 31, 41, and 51 may have the same length as the entire width of the glass plate G or may have a length shorter than the entire width of the glass plate G. At least one of the first pressing member 31, the second pressing member 41, and the breaking member 51 may intermittently contact the glass sheet G in the width direction.
Next, the method for manufacturing a glass plate according to the present embodiment will be described mainly in the breaking step using the breaking apparatus 1 configured as described above.
First, a glass sheet G to be an original sheet is formed from molten glass or the like by a known forming method such as an overflow down-draw method. The thickness of the product portion Ga of the glass plate G is, for example, 2mm or less, preferably 0.3mm to 0.7 mm.
Next, on the first main surface G1 of the glass sheet G, scribe lines S are formed at the boundary between the product portion Ga and the non-product portion Gb by pressing with a cutter wheel, irradiation with a laser beam, or the like. In the present embodiment, the glass sheet G has a rectangular shape, and the scribe line S is formed in parallel with a set of sides (only two sides) or each side (four sides) facing each other. The inner side of the scribe line S becomes the product portion Ga, and the outer side of the scribe line S becomes the non-product portion Gb.
As shown in fig. 1, the glass sheet G on which the scribe lines S are formed is conveyed by the conveying mechanism 2 in a state where the first main surface G1 faces upward. The conveyance mechanism 2 stops conveyance of the glass sheet G at a timing when the score line S located on the downstream side (the front side) in the conveyance direction reaches a predetermined position in the breaking space B between the first belt conveyor 21 and the second belt conveyor 22. Thereafter, the first pressing member 31 and the second pressing member 41 retracted above the first main surface G1 of the glass sheet G are lowered to press the first main surface G1 of the product portion Ga and the first main surface G1 of the non-product portion Gb. That is, the first main surface G1 of the product section Ga is held by the first pressing member 31 made of a brush-like member, and the first main surface G1 of the non-product section Gb is held by the second pressing member 41 made of rubber.
From this state, the breaking member 51 retracted below the glass sheet G is raised, and as shown in fig. 3, the second main surface G2 of the glass sheet G is pushed upward at a position directly below the scribe line S. Thereby, a bending stress centered on the scribe line S acts on the glass sheet G. At this time, the flat surface portions 51a of the breaking member 51 contact the second main surface G2 of the glass sheet G so as to straddle the scribe line S. The amount of lifting of the breaking member 51 is, for example, 2mm to 30mm, which is lifted upward with the conveyance surface of the glass sheet G (the upper surfaces of the first belt conveyor 21 and the second belt conveyor 22) as a zero reference. The amount of rise of the fracturing member 51 may or may not vary depending on the size and thickness of the non-product portion Gb.
When a bending stress is applied to the glass sheet G, the glass sheet G is broken along the scribe line S as shown in fig. 4, and the product portion Ga and the non-product portion Gb are separated. At this time, the second main surface G2 of the glass sheet G is pushed up by the flat surface 51a at a position directly below the scribe line S, and the load mode is four-point bending. Thereby, the scribing line S easily progresses straight (vertically). As a result, the post-processing of the cut end face Gax of the product portion Ga can be omitted or reduced.
In the present embodiment, the breaking member 51 is also maintained in the raised state after the product portion Ga is separated from the non-product portion Gb. At this time, the gap between the cutting end face Gax of the product portion Ga and the cutting end face Gbx of the non-product portion Gb is pushed open by the flat surface portion 51a of the breaking member 51, and the cutting end face Gax of the product portion Ga and the cutting end face Gbx of the non-product portion Gb are separated from each other. In this state, the first suction member 61 and the second suction member 62 (or only the first suction member 61) which are retracted above the first main surface G1 of the non-product portion Gb are lowered to suction and hold the first main surface G1 of the non-product portion Gb. Simultaneously with the suction holding, or before or after the suction holding, the first pressing member 31 and the second pressing member 41 are raised and retracted. Then, the non-product portions Gb sucked and held by the first and second suction members 61 and 62 (or only the first suction member 61) are lifted and removed from the second belt conveyor 22.
As shown in fig. 5, after the non-product portions Gb are removed, the breaking member 51 is lowered and retracted, and the first belt conveyor 21 and the second belt conveyor 22 are driven in the a direction and the b direction again to convey the product portions Ga to the downstream side. Thereby, the product portion Ga passes through the break space B and is transferred from the first belt conveyor 21 to the second belt conveyor 22.
Here, the case where the glass sheet G is broken along the scribe line S located on the downstream side in the conveying direction is described, but the glass sheet G is broken in the same manner also for the scribe lines S formed at other positions. When the glass sheet G is broken along the scribe line S located on the upstream side (rear side) in the conveying direction, for example, the second pressing mechanism 4 and the removal mechanism 6 are disposed on the upstream side in the conveying direction, and the first pressing mechanism 3 is disposed on the downstream side in the conveying direction. That is, the glass sheet G is arranged in the reverse manner to the state shown in fig. 1 in which the glass sheet G is broken along the scribe line S located on the downstream side in the conveyance direction. In addition, when the scribe lines S are also formed in parallel with the remaining pair of opposing sides of the glass sheet G, the glass sheet G is broken in the same manner for each of the scribe lines S that are switched to the downstream side and the upstream side in the conveying direction after the glass sheet G is rotated by 90 ° in the middle of the conveying path, for example.
As described above, the first main surface G1 of the product section Ga is pressed with assistance by the first pressing member 31 made of a brush-like member, and the first main surface G1 of the non-product section Gb is pressed firmly by the second pressing member 41 made of an elastic member (cylindrical rubber). The first main surface G1 of the glass sheet G as a whole provides a sufficient pressing force. Therefore, when the breaking member 51 is pushed up, the bending stress centered on the scribe line S sufficiently acts, and the glass sheet G can be reliably broken along the scribe line S.
In addition, since the first pressing member 31 is a brush-like member, the contact state with the product portion Ga is gentle. Therefore, unnecessary contamination and scratch are not easily caused to the product portion Ga.
Further, since the second pressing member 41 is made of rubber having a cylindrical shape, the convex curved surface contacts the first main surface G1 of the non-product portion Gb. Therefore, even if the contact position with the first main surface G1 of the non-product portion Gb changes, the pressed state is not easily unstable. Therefore, even when the size of the product portion Gb is changed due to a change in the type of the glass plate G or the like, the position of the second pressing member 41 does not need to be adjusted. As a result, the time required for the adjustment work can be omitted, and therefore, the glass sheet G can be efficiently manufactured.
The glass plate breaking apparatus and the glass plate manufacturing method according to the embodiment of the present invention have been described above, but the embodiment of the present invention is not limited to this, and various modifications can be made without departing from the scope of the present invention.
In the above-described embodiment, the case where the glass sheet G is broken while being conveyed in the direction orthogonal to the scribe line S (X direction in fig. 2) has been described, but the glass sheet G may be broken while being conveyed in the direction along the scribe line S (Y direction in fig. 2).
In the above-described embodiment, the case where the surface (upper end portion) of the break-off member 51 facing the second main surface G2 has a trapezoidal cross section has been described, but the surface of the break-off member 51 facing the second main surface G2 may have a triangular cross section, a semicircular cross section, a quadrangular cross section, or the like.
In the above-described embodiment, the case where two holding members (the suction members 61 and 62) are disposed as the removal mechanism 6 has been described, but one or three or more holding members may be disposed. In the case where a plurality of holding members are arranged, it is preferable to adjust the number of holding members that hold the non-product portions Gb according to the size and weight of the non-product portions Gb. In contrast, in the case where one holding member is arranged, the number of holding members that adsorb the non-product portions Gb cannot be adjusted according to the size and weight of the non-product portions Gb, but there is no particular problem when the raised posture of the non-product portions Gb is adjusted. For example, if the non-product portion Gb lifted upward is changed to the vertical posture (vertical posture), gravity acts along the plane, and therefore the non-product portion Gb can be safely transported.
In the above-described embodiment, the description has been given of the case where the first main face G1 of the non-product portion Gb is sucked and held by the suction member 61 and the suction member 62 (or only the suction member 61) after the product portion Ga is separated from the non-product portion Gb by the breaking member 51, but the first main face G1 of the non-product portion Gb may be sucked and held by the suction member 61 and the suction member 62 (or only the suction member 61) before the product portion Ga is separated from the non-product portion Gb by the breaking member 51. That is, the product portion Ga and the non-product portion Gb may be separated by the breaking member 51 in a state where the first main surface G1 of the non-product portion Gb is held by the suction member 61 and the suction member 62 (or only the suction member 61).
In the second pressing member 41 of the above embodiment, the surface facing the first main surface G1 is a convex curved surface, and the cross-sectional shape of the convex curved surface is semicircular. The shape of the cross section of the convex curved surface is not limited to a semicircular shape, and may be, for example, a semi-elliptical shape, a parabolic shape, or the like.
Description of reference numerals:
1, breaking off the device;
2, a conveying mechanism;
21 a first belt conveyor;
22 a second belt conveyor;
3 a first pressing mechanism;
31 a first pressing member;
4 a second pressing mechanism;
41 a second pressing member;
42a holding member;
42a recess;
5, a breaking mechanism;
51a breaking member;
a 51a plane part;
51b an inclined part;
6, a removing mechanism;
61 a first adsorption element;
62 a second adsorption member;
b, breaking off the space;
g a glass plate;
g1 first main face;
g2 second main face;
a Ga product part;
gb non-product section;
and S scribing lines.
Claims (4)
1. A method for manufacturing a glass plate having a product portion and a non-product portion demarcated by a scribe line formed on a first main surface, the method comprising a breaking step of pressing a second main surface of the glass plate against the first main surface at a position corresponding to the scribe line by a breaking member in a state where the first main surface of the product portion of the glass plate is pressed by a first pressing member and the first main surface of the non-product portion of the glass plate is pressed by a second pressing member, thereby breaking the glass plate along the scribe line,
the method for manufacturing a glass sheet is characterized in that,
the first pressing member is constituted by a brush-like member,
the bristles of the brush-like member have elasticity capable of being flexed and deformed in conformity with the first main surface when the bristles are pressed against the first main surface of the product portion,
the second pressing member is formed of an elastic member having a convex curved surface at least on a surface facing the first main surface,
the surface of the breaking member facing the second main surface includes: planar portions that span both sides of the scribe line; and a pair of inclined portions inclined on both sides of the planar portion so as to be spaced apart from the second main surface.
2. The method for manufacturing glass plate according to claim 1,
the second pressing member is cylindrical and long along the scribe line.
3. The method for producing a glass sheet according to claim 1 or 2,
the second pressing member is fitted into and held in a recess formed in the holding member.
4. A glass plate breaking device for breaking a glass plate having a product portion and a non-product portion defined by a scribe line formed on a first main surface along the scribe line,
the glass plate breaking device is characterized by comprising:
a first pressing member that presses the first main surface of the product portion;
a second pressing member that presses the first main surface of the non-product portion; and
a breaking member that presses the second main surface of the glass plate against the first main surface at a position corresponding to the scribe line,
the first pressing member is constituted by a brush-like member,
the bristles of the brush-like member have elasticity capable of being flexed and deformed in conformity with the first main surface when the bristles are pressed against the first main surface of the product portion,
the second pressing member is composed of an elastic member, at least a surface of the elastic member facing the first main surface is a convex curved surface,
the surface of the breaking member facing the second main surface includes: planar portions that span both sides of the scribe line; and a pair of inclined portions inclined on both sides of the planar portion so as to be spaced apart from the second main surface.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016235079A JP6838373B2 (en) | 2016-12-02 | 2016-12-02 | Plate glass manufacturing method and plate glass folding device |
| JP2016-235079 | 2016-12-02 | ||
| PCT/JP2017/040070 WO2018100978A1 (en) | 2016-12-02 | 2017-11-07 | Method for producing sheet glass and device for snap-cutting sheet glass |
Publications (2)
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| CN110023255A CN110023255A (en) | 2019-07-16 |
| CN110023255B true CN110023255B (en) | 2022-08-19 |
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| JP (1) | JP6838373B2 (en) |
| KR (1) | KR102449385B1 (en) |
| CN (1) | CN110023255B (en) |
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| WO (1) | WO2018100978A1 (en) |
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| TWI664134B (en) * | 2018-08-07 | 2019-07-01 | 住華科技股份有限公司 | Transportation device and transportation method using the same |
| KR20220093088A (en) * | 2019-10-29 | 2022-07-05 | 니폰 덴키 가라스 가부시키가이샤 | Glass plate manufacturing method and its manufacturing apparatus |
| JP7492680B2 (en) | 2020-12-02 | 2024-05-30 | 日本電気硝子株式会社 | Glass plate breaking device and method for manufacturing glass plate |
| JP2022151004A (en) * | 2021-03-26 | 2022-10-07 | 日本電気硝子株式会社 | Glass film manufacturing method and manufacturing device therefor |
| KR102474254B1 (en) | 2022-07-14 | 2022-12-06 | 최호림 | Plate glass cutting machine and plate glass cutting device threrof |
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| JP6668904B2 (en) * | 2016-04-12 | 2020-03-18 | 日本電気硝子株式会社 | Method and apparatus for manufacturing sheet glass |
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- 2016-12-02 JP JP2016235079A patent/JP6838373B2/en active Active
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- 2017-11-07 WO PCT/JP2017/040070 patent/WO2018100978A1/en active Application Filing
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| CN1878732A (en) * | 2003-11-06 | 2006-12-13 | 彼得·利泽克 | Method and device for breaking scored glass sheets |
| CN1890074A (en) * | 2003-12-04 | 2007-01-03 | 三星钻石工业股份有限公司 | Substrate machining method, substrate machining device, substrate carrying method, and substrate carrying mechanism |
| CN102067295A (en) * | 2008-06-30 | 2011-05-18 | 东和株式会社 | Method and apparatus for cutting substrate |
| CN102557418A (en) * | 2010-10-29 | 2012-07-11 | 康宁股份有限公司 | Method and apparatus for cutting glass ribbon |
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Also Published As
| Publication number | Publication date |
|---|---|
| TW201825419A (en) | 2018-07-16 |
| CN110023255A (en) | 2019-07-16 |
| KR20190086671A (en) | 2019-07-23 |
| JP6838373B2 (en) | 2021-03-03 |
| KR102449385B1 (en) | 2022-09-30 |
| WO2018100978A1 (en) | 2018-06-07 |
| TWI725257B (en) | 2021-04-21 |
| JP2018090445A (en) | 2018-06-14 |
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