JP2011178054A - Brittle material cutting device and cutting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To cut a brittle material under optimum conditions even if the characteristics of the cut brittle material change. <P>SOLUTION: One side 1b with a crack 1a of glass 1 as a boundary is fixed by a glass fixing mechanism 6, while the other side 1c is gripped by three air clamps 10 of a glass grip mechanism 7. An air clamp support member 29 mounted with the three air clamps 10 is moved in an X direction relative to a guide member 30 by an X-axis bending servo cylinder 35, and at the same time, the guide member 30 is moved in a Y direction together with the air clamp support member 29 and the three air clamps 10 by a Y-axis air cylinder 41. The other side 1c of the glass 1 thereby imparts a bending force in a direction orthogonal to a glass surface, and a tensile force in a direction parallel with the glass surface, simultaneously to the one side 1b to cut the glass 1 with the crack 1a as a base point. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a brittle material cleaving apparatus and a cleaving method in which a flaw is formed in advance on the surface of a brittle material such as glass or ceramic, and the brittle material is cleaved from the site where the flaw is formed.

  Conventionally, scratches are formed on the surface of glass for LCD televisions by laser, and bending and tearing (tensioning) are applied to the site where the scratches are formed by applying rotational stress around the central axis shifted in a direction perpendicular to the glass. ) At the same time, and a cleaving method and apparatus for cleaving glass are known (see Patent Document 1 below).

JP 2006-137170 A

  By the way, since the above-mentioned conventional cleaving method and apparatus generate | occur | produce and cleave by bending and tearing (pulling) simultaneously by rotational motion, the force relationship between bending force and tearing force (pulling force), The direction of rotation is uniquely determined. For this reason, for example, when the characteristics of the brittle material to be cleaved change, it becomes difficult to cleave under optimum conditions, and small quality fragments are generated on the cleaved surface, leading to a reduction in quality.

  Then, even if the characteristic of the brittle material to cleave changes, this invention aims at enabling it to cleave on optimal conditions.

  The present invention relates to a plate-like brittle material having a scratch formed on the surface, in a state where one side is fixed with respect to the site where the scratch is formed and the other side is gripped and intersects the surface of the brittle material A bending force applying means for applying a force toward the surface, and a tensile force applying means for applying a force toward the direction along the surface of the brittle material.

  According to the present invention, since bending and pulling with respect to the brittle material starting from the site where the flaw is formed are individually performed using the bending force applying means and the tensile force applying means, the bending force applying means and the tensile force are applied. Even if the characteristics of the brittle material to be cleaved are changed by appropriately adjusting the respective forces imparted by the force imparting means, cleaving can be carried out under optimum conditions.

It is a perspective view of the cleaving device concerning one embodiment of the present invention. It is the perspective view seen from the back side of the glass fixing mechanism and glass holding | grip mechanism periphery of the cleaving apparatus of FIG. It is a perspective view of the periphery of the glass gripping mechanism which abbreviate | omitted the support frame and glass fixing mechanism of the cleaving apparatus of FIG. It is a top view of the glass fixing mechanism and glass holding | grip mechanism periphery of the cleaving apparatus of FIG. It is a top view which shows another example of the glass fixing mechanism shown in FIG. 4 as (a), (b). It is a front view which shows the specific example of the holding piece in the glass holding | grip mechanism of FIG. 4 as (a), (b). It is a top view including the enlarged view of the principal part which shows another example of a glass holding | grip mechanism. FIG. 2 is a plan view of the periphery of an X-axis bending servo cylinder and a Y-axis air cylinder of the cleaving apparatus of FIG. 1. The operation | movement by the cleaving apparatus of FIG. 1 is demonstrated, (a) is a perspective view, (b) is a top view. It is a top view which shows another example of a glass holding | grip mechanism.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, a cleaving apparatus according to an embodiment of the present invention cleaves, for example, a liquid crystal television glass (hereinafter simply referred to as glass) 1 as a plate-like brittle material. On the surface of the glass 1 on the back side in FIG. 1, for example, a shallow crack 1 a that becomes a scratch is formed linearly along the vertical direction in FIG. 1. The crack 1a may be formed by a laser, or may be formed using a carbide tool such as a diamond tip, and the formation method is not particularly limited.

  The glass 1 is suspended and supported by a suspension mechanism 3 provided on the support frame 2 so that the surface thereof is parallel to the vertical direction. The support frame 2 includes a bottom frame 2a having a pair of long side portions 2a1, 2a2 and short side portions 2a3, 2a4 which are parallel to each other and form a substantially rectangular shape at the bottom portion.

  Rear vertical frames 2b1 and 2b2 extending upward from both ends of the long side portion 2a2 located on the back side in the figure of the bottom frame 2a are provided, and the upper end portions of the rear vertical frames 2b1 and 2b2 are mutually connected. Are connected by a rear upper frame 2b3 arranged in parallel with the long side portion 2a2 to constitute a rear frame 2b.

  Further, a side horizontal frame 2c1 is formed extending from the upper end of the right rear vertical frame 2b2 in FIG. 1 toward the long side 2a1 in a direction away from the rear vertical frame 2b2. Further, the end of the side horizontal frame 2c1 opposite to the rear upper frame 2b3 and the intersection of the long side 2a1 and the short side 2a4 are connected to each other by a side vertical frame 2c2 extending in the vertical direction. To do. These side frame 2c1 and side vertical frame 2c2 constitute a side frame 2c.

  The above-described suspension mechanism 3 is provided on the rear upper frame 2b3. The suspension mechanism 3 has a long clamp bar 5 attached to the tips (lower ends) of a plurality of suspension brackets 4, and the clamp bar 5 holds the upper edge of the glass 1 from both sides.

  Further, in the vicinity of the end portion of the glass 1 in the suspended support state on the side frame 2c side, an intermediate horizontal frame extending in parallel and in the same direction from the rear upper frame 2b3 to the side horizontal frame 2c1. 2d1 is formed, and the end opposite to the rear upper frame 2b3 of the intermediate horizontal frame 2d1 and the lower long side 2a1 are connected to each other by an intermediate vertical front frame 2d2 extending in the vertical direction.

  Further, an upper extension 2d3 is provided which protrudes and extends backward from an end of the intermediate horizontal frame 2d1 opposite to the intermediate vertical front frame 2d2, and an end of the upper extension 2d3 opposite to the intermediate horizontal frame 2d1 is provided. An intermediate vertical rear frame 2d4 serving as a cylinder mounting portion extending downward from the center is provided. Further, a lower extension frame 2d5 extending from the lower end of the intermediate vertical rear frame 2d4 toward the long side portion 2a2 is provided.

  The intermediate horizontal frame 2d is constituted by the intermediate horizontal frame 2d1, the intermediate vertical front frame 2d2, the upper extension 2d3, the intermediate vertical rear frame 2d4, and the lower extension frame 2d5.

  Further, the side vertical frame 2c2 and the intermediate vertical front frame 2d2 are connected to each other in the vicinity of their upper ends by an upper guide frame 2e and are connected in the vicinity of their lower ends by a lower guide frame 2f.

  The support frame 2 is generally configured as described above.

  Next, a mechanism for fixing and gripping the vicinity of the crack 1a of the glass 1 when cleaving will be described. In FIG. 1, one side (left side in FIG. 1) 1b is clamped and fixed by the glass fixing mechanism 6 with respect to the site where the crack 1a is formed, and the other side (in FIG. 1) with respect to the site where the crack 1a is formed. (Right side) 1c is gripped by a glass gripping mechanism 7 as a material gripping portion.

  As shown in FIG. 2 as viewed from the back side of the sheet of FIG. 1, the glass fixing mechanism 6 includes a total of three glass pressing air cylinders 8 disposed at both the upper and lower end portions and the vertical center portion of the glass 1, and a glass pressing portion. The air cylinder 8 is provided with an opposing bar 9 disposed opposite to the opposite side with the glass 1 interposed therebetween. The counter bar 9 has a vertical length substantially the same as the vertical length of the glass 1.

  The glass holding air cylinder 8 has a rear end attached to the intermediate vertical rear frame 2d4 of the intermediate frame 2d in the support frame 2 shown in FIG. 1, and the opposing bar 9 is attached to the intermediate vertical front frame 2d2 of the intermediate frame 2d. .

  On the other hand, the glass gripping mechanism 7 includes three air clamps 10 in the vertical direction as shown in FIG. 3 in which the support frame 2 and the glass fixing mechanism 6 are omitted. The three air clamps 10 are provided at positions where the above-described three glass pressing air cylinders 8 substantially correspond to each other in the vertical direction.

  FIG. 4 is a plan view of the periphery of the glass fixing mechanism 6 and the glass gripping mechanism 7 described above. The glass fixing mechanism 6 is provided with an end plate 12 at the tip of the piston rod 11 of the glass holding air cylinder 8, and this end plate. A pressing bar 13 having a substantially L-shaped cross section is provided on the front surface of 12 so as to oppose the counter bar 9 described above. As shown in FIG. 2, the end plate 12 is provided corresponding to each of the three glass holding air cylinders 8, and the pressing bar 13 is substantially the same as the length of the glass 1 in the vertical direction like the opposing bar 9. It has a vertical length.

  In FIG. 4, the position of the crack 1 a formed in the glass 1 is indicated as C.

  As shown in FIG. 4, the pressing bar 13 includes a protruding portion 13 a that protrudes toward the glass 1 at the end on the glass gripping mechanism 7 side, while the opposing bar 9 has a glass 1 side at the end on the glass gripping mechanism 7 side. The protrusion 9a is provided so as to face the protrusion 13a. And the pressing pieces 14 and 15 comprised with elastic materials, such as rubber | gum, are made into the length of the up-down direction of the pressing bar 13 and the opposing bar 9 in the edge part by the side of the glass holding | grip mechanism 7 of the front-end | tip of these protrusion parts 13a and 9a. They are provided almost correspondingly.

  Here, the opposing bar 9, the pressing bar 13, and the end plate 12 are positioned on the opposite side (left side in FIG. 4) to the glass gripping mechanism 7 with respect to the cracks 1 a of the glass 1 together with the pressing pieces 14 and 15. Moreover, although the pressing piece 15 on the opposite bar 9 side is in a state of being substantially in contact with the surface of the glass 1 opposite to the crack 1a, the pressing piece 14 of the pressing bar 13 is from the surface of the glass 1 on the crack 1a side. It is in a slightly separated state. Therefore, by driving the glass holding air cylinder 8 and moving the piston rod 11 forward, the pressing piece 14 presses the glass 1 and the opposing pressing piece 15 cracks 1a on one side 1b of the glass 1. The vicinity of is fixed.

  In addition, instead of the substantially square-shaped pressing pieces 14 and 15 in a plan view of FIG. 4, circular pressing pieces 14A and 15A may be used as shown in FIG. In FIG. 5A, the pressing pieces 14A and 15A are arranged at the centers of the tips of the protrusions 9a and 13a, but the end portions on the side of the glass gripping mechanism 7 like the pressing pieces 14 and 15 in FIG. You may arrange in. Conversely, the pressing pieces 14 and 15 in FIG. 4 may be arranged at the center like the pressing pieces 14A and 15A in FIG.

  Moreover, as shown in FIG.5 (b), it may replace with the opposing bar 9 and the press bar 13 of FIG. 4, and may use the plate-shaped opposing bar 9B and the press bar 13B correspondingly, and FIG. Instead of the square-shaped pressing pieces 14 and 15, plate-shaped pressing pieces 14B and 15B may be used.

  On the other hand, in the glass gripping mechanism 7, the three air clamps 10 shown in FIG. 3 move closer to and away from the other side 1 c of the glass 1 on the distal end side (left side in FIG. 4) of the air clamp body 16. A pair of possible slide claws 17 and 18 are provided. As shown in FIG. 4, gripping blocks 19 and 20 are provided on the mutually opposing surfaces of the pair of slide claws 17 and 18, respectively. The gripping blocks 19 and 20 have gripping plates 21 and 22 each having an L-shaped cross section. Are attached respectively. As shown in FIG. 2, the holding plates 21 and 22 have substantially the same length in the vertical direction as the opposed bar 9 and the pressing bar 13 described above.

  The gripping plates 21 and 22 are opposed to the opposing surfaces 21a and 22a fixed to the opposing surfaces of the gripping blocks 19 and 20, and are bent outwardly at right angles to the opposing surfaces 21a and 22a. Of the glass fixing mechanism 6 side. And the holding pieces 23 and 24 which consist of elastic materials, such as rubber | gum, are each provided in the mutually opposing position near the edge part by the side surfaces 21b and 22b in the opposing surfaces 21a and 22a of the holding plates 21 and 22. Here, the flange surfaces 21b and 22b of the grip plates 21 and 22 are positioned on the opposite side (right side in FIG. 4) to the glass fixing mechanism 6 with respect to the cracks 1a of the glass 1 together with the grip pieces 23 and 24. .

  Therefore, by moving the pair of slide claws 17 and 18 in a direction approaching each other, the vicinity of the crack 1a on the other side 1c of the glass 1 is gripped by the gripping pieces 23 and 24 described above.

  The grip pieces 23 and 24 are provided over the entire length in the vertical direction of the grip plates 21 and 22 as shown in FIG. 6A, but the grip plates 21 and 22 as shown in FIG. You may divide and provide in multiple along the up-down direction. Moreover, as a holding position by the holding pieces 23 and 24, the direction away from the position C of the crack 1a may be sufficient with respect to the position shown in FIG.

  FIG. 7 shows a glass gripping mechanism 7A different from the glass gripping mechanism 7 of FIG. 4, and the gripping plates 21 and 22 are directly attached to the slide claws 17 and 18, and the gripping piece 23 having a rectangular cross section of FIG. , 24 are used instead of gripping pieces 25, 26 having a circular cross section, and the gripping pieces 25, 26 are provided at the tips of the bases 27, 28. The pedestals 27 and 28 are fixed to the opposing surfaces 21a and 22a of the gripping plates 21 and 22, and V-grooves 27a and 28a are formed at their tips, and the gripping pieces 25 and 26 are bonded to the V-grooves 27a and 28a. It is fixed by.

  In this example, since the pedestals 27 and 28 provided with the gripping pieces 25 and 26 at the tips are provided, it is possible to secure a large space for accommodating the other side 1c of the glass 1 as compared with the example of FIG.

  Next, in a state where the other side 1c of the glass 1 is gripped by the glass gripping mechanism 7, the other side 1c is set in the X direction shown in FIGS. 1 and 3 (a direction perpendicular to the surface of the glass 1). A mechanism for applying a force in each of the Y directions (directions parallel to the surface of the glass 1) will be described.

  As shown in FIGS. 1 and 2, the three air clamps 10 of the glass gripping mechanism 7 described above are attached to an air clamp support member 29 extending along the arrangement direction (vertical direction) of the three air clamps 10. The rear end is attached. The air clamp support member 29 is fixed to a guide member 30 having a frame shape that is long in the vertical direction and is arranged on the side frame 2c side shown in FIG.

  The guide member 30 includes a rear vertical member 30a, a front vertical member 30b positioned in front of the rear vertical member 30a in parallel with the rear vertical member 30a (the front side in FIG. 1), and the rear vertical member 30a and the front vertical member. Positioned between the upper horizontal member 30c connecting the upper ends of the members 30b, the lower horizontal member 30d connecting the lower ends of the rear vertical member 30a and the front vertical member 30b, and the upper horizontal member 30c and the lower horizontal member 30d. And the intermediate | middle cross member 30e which connects the back part vertical member 30a and the front part vertical member 30b is mainly provided.

  An upper guide rail 31 is provided on the air clamp support member 29 side of the upper lateral member 30c, and a guide portion 32 on the air clamp support member 29 side is connected to the upper guide rail 31 so as to be movable in the X direction. . Similarly, a lower X guide rail 33 is provided on the air clamp support member 29 side of the lower horizontal member 30d, and the guide portion 34 on the air clamp support member 29 side is moved in the X direction with respect to the lower X guide rail 33. It is connected as possible.

  A piston rod (not shown) of an X-axis bending servo cylinder 35 as a first drive cylinder is connected to the back side of the drawing in FIG. The X-axis bending servo cylinder 35 is attached to the rear vertical member 30a of the guide member 30 via a bracket 36 as shown in FIG.

  Therefore, by driving the X-axis bending servo cylinder 35 forward, the air clamp support member 29 moves in the X direction with respect to the guide member 30 together with the three air clamps 10.

  Further, the upper guide frame 2e of the support frame 2 shown in FIG. 1 is substantially in the vertical position with respect to the upper lateral member 30c of the guide member 30, and the upper lateral member 30c of the upper guide frame 2e. An upper Y guide rail 37 extending in the Y direction is provided on the side. A pair of guide portions 38 provided on the upper lateral member 30c side are connected to the upper Y guide rail 37 so as to be movable along the Y direction. The pair of guide portions 38 are attached to the guide portion support block 30f provided at the end on the upper lateral member 30c side so as to protrude in the Y direction indicated by the arrow and the opposite direction.

  Similarly, the lower guide frame 2f of the support frame 2 has substantially the same vertical position as the lower horizontal member 30d of the guide member 30, and in the Y direction on the lower horizontal member 30d side of the lower guide frame 2f. An extending lower Y guide rail 39 is provided. With respect to the lower guide rail 39, a pair of guide portions 40 provided on the lower lateral member 30d side are provided so as to be movable along the Y direction. The pair of guide portions 40 are attached to the guide portion support block 30g provided at the end on the lower lateral member 30d side so as to protrude in the Y direction indicated by the arrow and the opposite direction.

  The front vertical member 30b at a position corresponding to the intermediate horizontal member 30e of the guide member 30 is formed with a mounting block 30h that protrudes on the opposite side to the intermediate horizontal member 30e. The mounting block 30h has a second drive. The tip of the piston rod 42 of the Y-axis air cylinder 41 as a cylinder is connected. The Y-axis air cylinder 41 extends in the Y direction, and its rear end is attached to a cylinder mounting block 2d6 protruding in the Y direction from the intermediate vertical front frame 2d2 of the intermediate frame 2d shown in FIG.

  Therefore, by driving the Y-axis air cylinder 41 forward, the entire guide member 30 moves in the Y direction with respect to the support frame 2 together with the air clamp support member 29 and the three air clamps 10.

  The X-axis bending servo cylinder 35 described above constitutes a bending force applying means that applies a force toward the direction in which the other side 1c of the glass 1 intersects the surface, while the Y-axis air cylinder 41 is the other side of the glass 1. A pulling force applying means for applying a force toward the direction along the surface of the side 1c is configured. Note that the X-axis bending servo cylinder 35 may be an air cylinder, and the Y-axis air cylinder 41 may be a servo cylinder.

  Next, the operation will be described. First, as shown in FIGS. 1 and 2, the upper edge of one side 1 b is suspended and supported by the support frame 2 by a pair of clamp bars 5 with respect to the crack 1 a of the glass 1. At this time, the crack 1 a of the glass 1 is located in the vicinity of the intermediate frame 2 d in the support frame 2.

  Further, in this state, the three glass holding air cylinders 8 in the glass fixing mechanism 6 are driven, and one side 1b near the crack 1a of the glass 1 is pressed against the pressing piece 15 of the opposing bar 9 shown in FIG. It is clamped and fixed between the pressing pieces 14 of the bar 13. At the same time, the three air clamps 10 in the glass gripping mechanism 7 are driven, and the other side 1c near the crack 1a of the glass 1 is gripped on the pair of slide claws 17 and 18 shown in FIG. It is gripped by the pieces 23 and 24.

  In this state, as shown in FIG. 8, the X-axis bending servo cylinder 35 is driven forward to move the air clamp support member 29 in the X direction, and at the same time, the Y-axis air cylinder 41 is driven forward to guide the member. 30 is moved in the Y direction. As a result, as shown in FIG. 9, the resultant force P in the X direction and the Y direction acts on the glass 1 with the crack 1 a as a base point, and the other side 1 c of the glass 1 moves to the one side 1 b along the resultant force P direction. On the other hand, a force that separates them is applied.

  The resultant force P in FIG. 9B can be arbitrarily adjusted according to the magnitude of the force in the X direction and the magnitude of the force in the Y direction, and is not limited to the magnitude and direction shown in the figure. . Further, the entire structure such as the mechanism for gripping the glass 1 in FIG. 9A is merely for explaining the operation, and therefore does not coincide with FIG.

  The action of the force in the direction of the resultant force P described above is substantially equivalent to the pulling force on the one side 1b of the other side 1c by the rotational motion including the crack 1a around the position Q that is separated from the surface of the glass 1 in the direction perpendicular to the surface. It will be something. For this reason, it is possible to suppress the generation of small pieces by suppressing the frictional sections of the one side 1b and the other side 1c at the crack 1a from rubbing with each other, and a high-quality split section can be obtained.

  At this time, in the present embodiment, the rotary motion is not simply performed around the position Q separated in the direction perpendicular to the glass 1, but the X direction uses the X axis bending servo cylinder 35, while the Y direction Uses a Y-axis air cylinder 41 and uses separate drive means for the X and Y directions.

  For this reason, the pressing force of the X-axis bending servo cylinder 35 (the bending force against the glass 1) is adjusted independently in the X direction, and the pressing force (the pulling force against the glass 1) of the Y-axis air cylinder 41 is adjusted in the Y direction. By adjusting independently, the magnitude and direction of the force in each of the X and Y directions (direction of the resultant force P) can be changed. Therefore, even if the characteristics (material and plate thickness) of the glass 1 to be cleaved change, it can be cleaved under optimum conditions by the adjustment described above.

  In this embodiment, the glass gripping mechanism 7 that grips the other side 1c of the glass 1 and the glass gripping mechanism 7 that supports the glass gripping mechanism 7 so as to be movable in a direction perpendicular to the surface of the glass 1 are supported. And a support frame 2 serving as a second support unit that supports the guide member 30 so as to be movable in a direction parallel to the surface of the glass 1. .

  Therefore, while the glass gripping mechanism 7 grips the other side 1c of the glass 1, the glass gripping mechanism 7 is moved in the X direction along the upper lateral member 30c and the lower lateral member 30d of the guide member 30, and the guide By moving the member 30 in the Y direction along the upper guide frame 2e and the lower guide frame 2f of the support frame 2, the other side 1c can be easily moved in the resultant force P direction shown in FIG.

  In this embodiment, the X-axis bending servo cylinder 35 is attached to the guide member 30 serving as the first support portion, and the Y-axis air cylinder 41 is attached to the support frame 2 serving as the second support portion. Therefore, the glass gripping mechanism 7 can be moved in the X direction with respect to the guide member 30 by driving the X-axis bending servo cylinder 35, and the guide member 30 is moved relative to the support frame 2 by driving the Y-axis air cylinder 41. Can be moved in the Y direction.

  FIG. 10 shows a glass gripping mechanism 7B using a suction pad 43 in contrast to the glass gripping mechanism 7 using the pressing pieces 14 and 15 of FIG. At the same time the base 44 supporting the suction pad 43 is moved in the X direction by an X-axis drive cylinder (not shown) while the suction pad 43 sucks the surface of the other side 1c of the glass 1 opposite to the crack 1a. Then, it is moved in the Y-axis direction by a Y-axis drive cylinder (not shown).

  Accordingly, the resultant force P in the X direction and the Y direction acts on the glass 1 with the crack 1a as a base point, and the other side 1c of the glass 1 is moved along the resultant force P direction in the same manner as described in FIG. A force that separates the one side 1b is applied.

  In the embodiment described above, the X-axis bending servo cylinder 35 moves the air clamp support member 29 in the X direction with respect to the guide member 30, while the Y-axis air cylinder 41 moves the guide member 30 in the Y direction. Yes.

  On the contrary, the Y-axis air cylinder 41 moves the air clamp support member 29 in the Y direction with respect to the guide member 30, while the X-axis bending servo cylinder 35 moves the guide member 30 together with the air clamp support member 29 in the X direction. It can also be set as the structure moved to. In this case, the support frame 2 serves as the first support portion, and the guide member 30 serves as the second support portion.

  Further, either one of the movement in the X direction and the movement in the Y direction may be performed using gravity generated by suspending a weight member on the other side 1 c of the glass 1. That is, in this case, for example, if the glass 1 is arranged in parallel to the horizontal plane, the movement in the X direction perpendicular to the surface of the glass 1 is performed by gravity. Further, if one side 1b of the glass 1 is arranged in the vertical direction and the other side 1c is arranged in the vertical direction, the movement in the Y direction parallel to the surface of the glass 1 is performed by gravity.

  In any case, for the movement in the direction orthogonal to the direction using gravity, the drive cylinder is used, and the drive cylinder is operated simultaneously with the application of gravity. In this case, gravity constitutes one of the bending force applying means and the tensile force applying means.

1 Glass (brittle material)
1a Cracks (scratches) in glass
1b One side of glass 1c The other side of glass 2 Support frame (second support part, first support part)
7 Glass gripping mechanism (material gripping part)
30 guide members (first support part, second support part)
35 X-axis bending servo cylinder (first driving cylinder, bending force applying means)
41 Y-axis air cylinder (second driving cylinder, tension applying means)

Claims (4)

  For a plate-like brittle material with scratches formed on the surface, with one side fixed to the site where the scratches were formed, force the other side to grip and cross the surface of the brittle material A brittle material cleaving apparatus comprising: a bending force imparting means for imparting a tension force; and a tensile force imparting means for imparting a force toward the direction along the surface of the brittle material.   A material gripping part for gripping the other side of the brittle material, and a first support part for supporting the material gripping part so as to be movable in one of a direction intersecting the surface and a direction along the surface; The first support portion includes a second support portion that movably supports the first support portion in a direction crossing the surface or a direction along the surface. The brittle material cleaving device described.   The bending force applying means includes a first driving cylinder that applies a force in a direction crossing the surface of the brittle material, and the first driving cylinder crosses the material gripping portion with the surface. It is attached to the first support portion that is movably supported in the direction of movement, and the means for applying a pulling force is constituted by a second drive cylinder that applies a force in a direction along the surface of the brittle material. 3. The brittle material cleaving apparatus according to claim 2, wherein the second drive cylinder is attached to the second support part that supports the first support part so as to be movable along the surface. .   With respect to a plate-like brittle material with scratches on the surface, with one side fixed to the site where the scratches are formed, the other side is directed in a direction intersecting the surface of the brittle material by means of a bending force applying means. The method of cleaving the brittle material is characterized in that a force is applied to the other side in a direction along the surface of the brittle material by means of a tensile force applying means at the same time as applying the force.

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