Glass cutting method

Abstract

The invention relates to the technical field of liquid crystal substrate processing, in particular to a glass cutting method, which is used for cutting second glass with a preset shape and size and a relatively small size from first glass with a relatively large size, and is characterized by comprising the following steps: acquiring an image of the first glass, identifying all cracks on the first glass through image analysis, and obtaining a first glass image; delimiting a first area on the first glass to enable the cracks to be located outside the first area on the first glass, delimiting a second area which is consistent with the second glass in size and shape in the first area, and cutting the first glass along the boundary of the second area to take out the second glass; compared with the prior art, by means of the method, the semi-finished glass substrates with cracks and other defects can be automatically screened out, the screening efficiency and precision of the semi-finished glass substrates are improved, meanwhile, the cutting scheme can be optimized according to the positions of the cracks, the fixed cutting position is not limited any more, and the utilization rate of the semi-finished glass substrates with the cracks on the edges is increased.

Description

Technical Field

[0001] The invention relates to the technical field of liquid crystal substrate processing, and in particular to a glass cutting method. Background Art

[0002] In the production and processing of liquid crystal substrates, after the liquid crystal substrate comes out of the drawing board, there will be a roughly length (A) and width (B) size board, that is, a semi-finished board. To be processed into a finished product, it needs to be further fine-cut to obtain the length (a) and width (b) size. At present, the fine-cutting process adopts a fixed-position processing technology. The cutting position of the semi-finished board is in a fixed state. It is impossible to screen the semi-finished boards with defects such as cracks. It can only rely on manual confirmation before being put into use, which wastes labor and may cause the defective semi-finished boards to break during cutting. In addition, the debris generated during the cutting process will also splash onto the substrate surface. The present invention provides a result solution for the above problems. Summary of the invention

[0003] In order to solve the technical problems existing in the above-mentioned background technology, the present invention provides a glass cutting method.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A glass cutting method is used to cut a relatively small second glass with a preset shape and size from a relatively large first glass, and is characterized in that it includes: collecting an image of the first glass, identifying all cracks on the first glass through image analysis, defining a first area on the first glass so that the cracks are all located outside the first area on the first glass, defining a second area within the first area whose size and shape are consistent with those of the second glass, and cutting the first glass along the boundary of the second area to cut out the second glass.

[0006] Preferably, the first area and the second area are both rectangular areas, the distance between the first long side of the first area and the third long side of the second area is m1, the distance between the second long side of the first area and the fourth long side of the second area is m2, where m1=m2; the distance between the first short side of the first area and the third short side of the second area is m3, the distance between the second short side of the first area and the fourth short side of the second area is m4, where m3=m4.

[0007] Preferably, the first glass is a rectangular glass, and the first long side is arranged parallel to the fifth long side of the first glass.

[0008] Preferably, the cracks include: first type cracks and / or second type cracks and / or third type cracks and / or fourth type cracks, the first type cracks start from the fifth long side, the second type cracks start from the sixth long side of the first glass, the third type cracks start from the fifth short side of the first glass, and the fourth type cracks start from the sixth short side of the first glass.

[0009] Preferably, the cracks are all located outside the first area on the first glass, specifically: when there is a first type of crack in the cracks, the first type of crack is located between the fifth long side and the first long side; when there is a second type of crack in the cracks, the second type of crack is located between the sixth long side and the second long side; when there is a third type of crack in the cracks, the third type of crack is located between the fifth short side and the first short side; when there is a fourth type of crack in the cracks, the fourth type of crack is located between the sixth short side and the second short side.

[0010] Preferably, in the width direction of the first glass, the fifth long side, the first long side, the second long side and the sixth long side are arranged in sequence; in the length direction of the first glass, the fifth short side, the first short side, the second short side and the sixth short side are arranged in sequence.

[0011] Preferably, the shortest distance between any point on any existing first type of crack and the first long side is less than the preset value; the shortest distance between any point on any existing second type of crack and the second long side is less than the preset value; the shortest distance between any point on any existing third type of crack and the first short side is less than the preset value; the shortest distance between any point on any existing fourth type of crack and the second short side is less than the preset value.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] Compared with the prior art, this method can not only automatically screen out semi-finished glass substrates with defects such as cracks, thereby improving the screening efficiency and accuracy of semi-finished plates, but also optimize the cutting scheme according to the crack position, no longer limited to a fixed cutting position, and improve the utilization rate of semi-finished glass substrates with cracks on the edges. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of the glass cutting method proposed by the present invention;

[0015] Figure 2 A top view of a first glass in a first state in the glass cutting method provided by the present invention;

[0016] Figure 3 A top view of the first glass in the second state in the glass cutting method provided by the present invention;

[0017] Figure 4 It is a structural schematic diagram of a cutting assembly in the glass cutting method proposed by the present invention;

[0018] Figure 5 The present invention is a flow chart of the glass cutting method.

[0019] In the figure: 1-base, 2-first area, 21-first long side, 22-second long side, 23-first short side, 24-second short side, 3-edge removal device, 4-cutting assembly, 41-vacuum tube, 42-cutter assembly, 5-image acquisition device, 6-image processing device, 7-second area, 71-third long side, 72-fourth long side, 73-third short side, 74-fourth short side, 8-first glass. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figure 1-Figure 5 As shown, this embodiment provides a glass cutting method for cutting a relatively small second glass with a preset shape and size from a relatively large first glass 8, characterized in that it includes: collecting an image of the first glass 8, identifying all cracks on the first glass 8 through image analysis, defining a first area 2 on the first glass 8 so that the cracks are all located outside the first area 2 on the first glass 8, defining a second area 7 in the first area 2 whose size and shape are consistent with those of the second glass, and cutting the first glass 8 along the boundary of the second area 7 to cut out the second glass.

[0022] In general, after the first glass 8 to be cut is horizontally fixed on the workbench of the base 1, all cracks on the first glass 8 are captured by the image acquisition device 5 arranged on the base 1, and the first area 2 is delineated according to the image processing device 6 so that all cracks captured by the image acquisition device 5 are located outside the first area 2. After the delineation of the first area 2 is completed, a cutting plan is formulated according to the preset glass substrate size and the second area 7 is delineated, and the cutting component 4 is controlled to cut the boundary of the second area 7 according to the cutting plan, so that the finished second glass can be obtained.

[0023] Compared with the prior art, this method can not only automatically screen out semi-finished glass substrates with defects such as cracks, thereby improving the screening efficiency and accuracy of semi-finished plates, but also optimize the cutting scheme according to the crack position, no longer limited to a fixed cutting position, and improve the utilization rate of semi-finished glass substrates with cracks on the edges.

[0024] like Figure 1-Figure 2As shown, in one embodiment, the first area 2 and the second area 7 are both rectangular areas, the distance between the first long side 21 of the first area 2 and the third long side 71 of the second area 7 is m1, the distance between the second long side 22 of the first area 2 and the fourth long side 72 of the second area 7 is m2, wherein m1=m2; the distance between the first short side 23 of the first area 2 and the third short side 73 of the second area 7 is m3, the distance between the second short side 24 of the first area 2 and the fourth short side 74 of the second area 7 is m4, wherein m3=m4.

[0025] Specifically, the first region 2 and the second region 7 are both rectangular regions, a distance m1 between the first long side 21 of the first region 2 and the third long side 71 of the second region 7 is equal to a distance m2 between the second long side 22 of the first region 2 and the third long side 71 of the second region 7, and a distance m3 between the first short side 23 of the first region 2 and the third short side 73 of the second region 7 is equal to a distance m4 between the second short side 24 of the first region 2 and the third short side 73 of the second region 7, so that the second region 7 can be located at the center of the first region 2, and the edge effect of the glass substrate during the cutting process can be avoided, thereby effectively improving the quality and mechanical stability of the glass substrate during the cutting process.

[0026] like Figure 1-Figure 3 As shown, in one embodiment, the first glass 8 is specifically a rectangular glass, and the first long side 21 is arranged parallel to the fifth long side of the first glass 8 .

[0027] Specifically, the first glass 8 is a rectangular glass, and the first long side 21 is arranged in parallel with the fifth long side of the first glass 8. By making the corresponding sides of the first glass 8, the first area 2 and the second area 7 parallel to each other, after the image acquisition device 5 captures all cracks on the first glass 8, the image processing device 6 demarcates the first area 2 on the first glass 8 based on the crack image captured by the image acquisition device 5, and the image processing device 6 controls the cutting component 4 to cut on the boundary line of the second area 7 in the first area 2 according to the preset glass substrate size, so as to obtain the finished second glass. The first long side 21 is arranged in parallel with the fifth long side of the first glass 8, so that the stress distribution of the glass substrate is uniform during the cutting process, and the local cracking or breakage of the glass during the cutting process due to excessive stress concentration is avoided, thereby improving the strength and quality of the product.

[0028] like Figure 3 As shown, in one embodiment, the cracks include: first type cracks and / or second type cracks and / or third type cracks and / or fourth type cracks, the first type cracks start from the fifth long side, the second type cracks start from the sixth long side of the first glass 8, the third type cracks start from the fifth short side of the first glass 8, and the fourth type cracks start from the sixth short side of the first glass 8.

[0029] Specifically, the first type of crack, the second type of crack, the third type of crack and the fourth type of crack start from the fifth long side, the sixth long side, the fifth short side and the sixth short side respectively, and the first type of crack, the second type of crack, the third type of crack and the fourth type of crack are all located outside the first area 2 on the first glass 8, which can ensure that there are no cracks in the first area 2 to ensure that the second glass is cut.

[0030] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, in one embodiment, the cracks are all located outside the first area 2 on the first glass 8, specifically: when there is a first type of crack in the crack, the first type of crack is located between the fifth long side and the first long side 21; when there is a second type of crack in the crack, the second type of crack is located between the sixth long side and the second long side 22; when there is a third type of crack in the crack, the third type of crack is located between the fifth short side and the first short side 23; when there is a fourth type of crack in the crack, the fourth type of crack is located between the sixth short side and the second short side 24.

[0031] Specifically, the first area 2 is divided on the first glass 8 according to the positions of the first type of cracks, the second type of cracks, the third type of cracks, and the fourth type of cracks captured by the image acquisition device 5, so that the first type of cracks is located between the fifth long side and the first long side 21, the second type of cracks is located between the sixth long side and the second long side 22, the third type of cracks is located between the fifth short side and the first short side 23, and the fourth type of cracks is located between the sixth short side and the second short side 24, so that the first type of cracks, the second type of cracks, the third type of cracks, and the fourth type of cracks are all located outside the first area 2 on the first glass 8, and the image processing device 6 is used to control the cutting The cutting component 4 cuts the first glass 8 on the boundary line of the second area 7 to obtain the second glass. On the premise of meeting the cutting size of the glass substrate, the first area 2 is delineated to the maximum extent according to the position distribution of the first type of cracks, the second type of cracks, the third type of cracks and the fourth type of cracks, so as to avoid the extension of the first type of cracks, the second type of cracks, the third type of cracks and the fourth type of cracks during the cutting process, effectively improve the yield rate, and make the stress distribution of the glass substrate uniform during the cutting process, so as to avoid local cracking or breakage of the glass during the cutting process due to excessive stress concentration, thereby improving the strength and quality of the product.

[0032] When the image processing device 6 demarcates the first area 2 to the maximum extent according to the position distribution of the first type of cracks, the second type of cracks, the third type of cracks and the fourth type of cracks, and the size of the first area 2 does not meet the cutting size of the glass substrate, the image processing device 6 fails to process the image, and the image processing device 6 issues a warning and the cutting plan is manually determined.

[0033] like Figure 2-Figure 3 As shown, in one embodiment, in the width direction of the first glass 8, the fifth long side, the first long side 21, the second long side 22 and the sixth long side are arranged in sequence; in the length direction of the first glass 8, the fifth short side, the first short side 23, the second short side 24 and the sixth short side are arranged in sequence.

[0034] Specifically, by arranging the fifth long side, the first long side 21, the second long side 22 and the sixth long side in sequence; the fifth short side, the first short side 23, the second short side 24 and the sixth short side in sequence, when the cutting component 4 cuts the boundary line of the second area 7, the stress distribution of the first glass 8 during the cutting process can be made more uniform, avoiding local cracks or breakage of the glass during the cutting process due to excessive stress concentration, thereby improving the strength and quality of the product.

[0035] like Figure 1-Figure 4 As shown, in one embodiment, the shortest distance between any point on any existing first type crack and the first long side 21 is less than the preset value; the shortest distance between any point on any existing second type crack and the second long side 22 is less than the preset value; the shortest distance between any point on any existing third type crack and the first short side 23 is less than the preset value; the shortest distance between any point on any existing fourth type crack and the second short side 24 is less than the preset value.

[0036] Specifically, the shortest distances from all points on the first type of crack to the first long side 21 are smaller than the vertical distance between the first long side 21 and the fifth long side; the shortest distances from all points on the second type of crack to the second long side 22 are smaller than the vertical distance between the second long side 22 and the sixth long side; the shortest distances from all points on the third type of crack to the first short side 23 are smaller than the vertical distance between the first short side 23 and the fifth short side; the shortest distances from all points on the fourth type of crack to the second short side 24 are smaller than the vertical distance between the second short side 24 and the sixth short side; on the premise that the cutting size of the glass substrate is met, the first type of crack, the second type of crack, the third type of crack and the fourth type of crack are all located outside the first area 2 defined by the image processing device 6, and the image processing device 6 formulates a cutting plan according to the preset glass substrate size and controls the cutting assembly 4 to complete the cutting of the second glass along the boundary line of the second area 7. After the cutting of the second glass is completed, the edge material with cracks is removed by the edge removal device arranged at the edge of the first glass 8.

[0037] The cutting assembly 4 specifically includes a vacuum tube 41 and a cutter assembly 42. The vacuum tube 41 moves with the cutter assembly 42, and can absorb glass debris generated during the cutting process while completing the cutting operation.

[0038] Of course, it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0040] The techniques, shapes, and structural parts not described in detail in the present invention are all well-known techniques.

Claims

1. A glass cutting method for cutting a second glass of relatively small size having a preset shape and size from a first glass of relatively large size (8), characterized in that: include: An image of a first glass (8) is collected, all cracks on the first glass (8) are identified through image analysis, a first region (2) is demarcated on the first glass (8) so that all cracks are located outside the first region (2) on the first glass (8), a second region (7) having a size and shape consistent with that of the second glass is demarcated within the first region (2), and the first glass (8) is cut along a boundary of the second region (7) to thereby cut out the second glass.

2. The glass cutting method according to claim 1, characterized in that: The first region (2) and the second region (7) are both rectangular regions, the distance between the first long side (21) of the first region (2) and the third long side (71) of the second region (7) is m1, the distance between the second long side (22) of the first region (2) and the fourth long side (72) of the second region (7) is m2, wherein m1=m2; the distance between the first short side (23) of the first region (2) and the third short side (73) of the second region (7) is m3, the distance between the second short side (24) of the first region (2) and the fourth short side (74) of the second region (7) is m4, wherein m3=m4.

3. The glass cutting method according to claim 2, characterized in that: The first glass (8) is specifically a rectangular glass, and the first long side (21) is arranged parallel to the fifth long side of the first glass (8).

4. The glass cutting method according to claim 3, characterized in that: The cracks include: first type cracks and / or second type cracks and / or third type cracks and / or fourth type cracks, the first type cracks start from the fifth long side, the second type cracks start from the sixth long side of the first glass (8), the third type cracks start from the fifth short side of the first glass (8), and the fourth type cracks start from the sixth short side of the first glass (8).

5. The glass cutting method according to claim 4, characterized in that: The cracks are all located outside the first area (2) on the first glass (8), specifically: when a first type of crack exists in the cracks, the first type of crack is located between the fifth long side and the first long side (21); when a second type of crack exists in the cracks, the second type of crack is located between the sixth long side and the second long side (22); when a third type of crack exists in the cracks, the third type of crack is located between the fifth short side and the first short side (23); when a fourth type of crack exists in the cracks, the fourth type of crack is located between the sixth short side and the second short side (24).

6. The glass cutting method according to claim 5, characterized in that: In the width direction of the first glass (8), the fifth long side, the first long side (21), the second long side (22) and the sixth long side are arranged in sequence; in the length direction of the first glass (8), the fifth short side, the first short side (23), the second short side (24) and the sixth short side are arranged in sequence.

7. The glass cutting method according to claim 5, characterized in that: The shortest distance between any point on any existing first-type crack and the first long side (21) is less than a preset value; the shortest distance between any point on any existing second-type crack and the second long side (22) is less than a preset value; the shortest distance between any point on any existing third-type crack and the first short side (23) is less than a preset value; and the shortest distance between any point on any existing fourth-type crack and the second short side (24) is less than a preset value.

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