A precise breaking device for multi-species TFT glass and a breaking method thereof

Abstract

The application discloses a kind of accurate breaking device of multi-species TFT glass and its breaking method;Including: conveyer belt, edge inspection visual component, breaking component and breaking translation component;The breaking component is located at the two sides of conveyer belt respectively, the breaking component includes upper breaking component and lower breaking component, the lower breaking component is provided with glass height adjusting mechanism, the upper breaking component is provided with breaking position adjusting mechanism, the breaking component is connected to breaking translation component, and breaking component moves with translation component, to avoid glass transmission process and equipment collision;Four edge inspection visual components are respectively distributed in the upstream position and downstream position of the two sides of conveyer belt;The edge inspection visual component uses CCD visual zoom detection lens;Adapt to a variety of specifications TFT glass substrate;Breaking translation component drives upper breaking mechanism and lower breaking mechanism to move, to ensure that breaking component moves to breaking position, to avoid ear material breaking process scribe position deviation and crack.

Description

Technical Field

[0001] This invention relates to the field of TFT glass manufacturing technology, specifically to a precise breaking device and method for various types of TFT glass. Background Technology

[0002] The substrate glass slitting and cutting technology is relatively mature, and the processing technology has not changed for a long time. The cutting quality and yield have remained relatively stable. As the demand for large-size glass specifications becomes more refined, it is necessary to cope with the production of glass of different specifications, which puts forward compatibility requirements on processing equipment. The thickness of substrate glass is also trending towards thinner profiles. This traditional cutting technology needs to be compatible with large sizes and multiple specifications, and stable and fast-paced production are the basic requirements for TFT glass production.

[0003] To improve production efficiency, the equipment was simultaneously accelerated. However, the product positioning was too large, affecting the breaking quality and causing many limitations on process stability. The original technology could not meet the compatibility requirements for producing glass of different specifications. Positioning deviations caused edge-tracking alarms. The inability to achieve precise positioning resulted in chipping and cracks during the breaking process of the glass sheet. As the substrate glass, it underwent a certain degree of deflection on the outside of the conveyor belt, resulting in reflected light deviations that affected the clarity of edge-tracking. Summary of the Invention

[0004] The purpose of this invention is to provide a precise breaking device and method for various types of TFT glass, solving the following technical problems:

[0005] Existing TFT glass breaking technology is difficult to adapt to various specifications of TFT glass substrates. When the TFT glass substrate undergoes deflection and deformation, it affects the edge-tracking clarity, and cracks appear during the breaking process.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A precision breaking device for various types of TFT glass includes: a conveyor belt, an edge-tracking vision component, a breaking component, and a breaking translation component;

[0008] The breaking components are located on both sides of the conveyor belt. The breaking components include an upper breaking component and a lower breaking component. The lower breaking component is equipped with a glass height adjustment mechanism, and the upper breaking component is equipped with a breaking position adjustment mechanism. The breaking translation component is connected to the breaking component. There are four edge-tracking vision components in total. The four edge-tracking vision components are distributed at the upstream and downstream positions on both sides of the conveyor belt.

[0009] The edge-tracing vision component uses a CCD vision zoom detection lens.

[0010] Furthermore, the upper breaking assembly includes: a breaking position adjustment mechanism, a rotating connecting rod, a breaking assembly mounting plate, a negative pressure fixing beam, and a rotating beam; the breaking position adjustment mechanism includes an upper lifting rod, the bottom end of which is connected to the breaking assembly mounting plate; one end of the rotating connecting rod is connected to the output end of a drive motor, and the other end of the rotating connecting rod is rotatably connected to the rotating beam via a rotating shaft; the drive motor is mounted on one side of the breaking assembly mounting plate.

[0011] The mounting plate of the break-off component is provided with an arc-shaped sliding groove. One side of the rotating beam is slidably connected to the arc-shaped sliding groove through a slider. The rotating beam is located on one side of the negative pressure fixed beam.

[0012] Furthermore, the negative pressure fixing beam is configured as a square pressure rod structure with a negative pressure cavity. A support baffle is provided inside the negative pressure cavity of the negative pressure fixing beam. There is a through gap between the top of the support baffle and the inner wall of the negative pressure cavity of the negative pressure fixing beam. A negative pressure suction nozzle groove is provided on the bottom end of the negative pressure fixing beam near the rotating beam. Negative pressure suction interfaces are provided at both ends of the negative pressure fixing beam.

[0013] Furthermore, the lower break-off assembly includes a support beam and a glass height adjustment mechanism. The glass height adjustment mechanism includes a lower lifting rod. One side of the support beam is connected to the output end of the lower lifting rod. The support beam is located below the rotating beam and the negative pressure fixing beam. Half of the top surface of the support beam is flat, and the other half of the top surface of the support beam is set as a curved arc surface.

[0014] Furthermore, the breaking and translating assembly includes: a translating slide, a lead screw, and a translating slide block. The top of the translating slide is slidably connected to the translating slide block, and the inside of the translating slide block is connected to a lead screw ring. One end of the lead screw is connected to a lead screw motor.

[0015] Furthermore, the upper and lower lifting rods of the break-off assembly are mounted to one side of the translation slide via a mounting bracket.

[0016] Furthermore, a patrol beam is provided on one side of the mounting frame. The patrol beam is arranged parallel to the conveyor belt. There are two patrol beams in total, located on both sides of the conveyor belt. A patrol vision component is installed on the opposite side of the two patrol beams.

[0017] Furthermore, the edge-tracking vision component includes an edge-tracking illumination lamp and an edge-tracking lens, wherein the edge-tracking illumination lamp is located on one side of the edge-tracking lens, and the edge-tracking lens is configured as a CCD vision zoom detection lens.

[0018] A method for breaking various types of TFT glass includes the following steps:

[0019] S1: The TFT glass with the cutting line is conveyed to the stop position by the conveyor belt. The breaking translation component pushes the breaking mechanism to move towards the conveyor belt and reach the preset edge-tracking position. The edge-tracking vision component starts to monitor the image.

[0020] S2: The edge-tracking vision component captures the position of the cutting line;

[0021] S3: The edge-following vision component transmits the position coordinate data of the cutting line to the CCD vision inspection system. The CCD vision inspection system corrects the position coordinate data of the cutting line by referring to the zoom lens parameter coefficient of the edge-following vision component, and obtains the actual position coordinate data of the cutting line.

[0022] S4: The breaking translation component is driven to move to the measured cutting line position until the negative pressure fixing beam and rotating beam of the breaking component are respectively located on both sides of the cutting line.

[0023] S5: The lower lifting rod drives the support beam to rise to the top plane of the conveyor belt, and the upper lifting rod drives the negative pressure fixed beam and rotating beam to descend until the gap between the negative pressure fixed beam and rotating beam and the support beam is the thickness of the TFT glass + 0.1~0.3mm.

[0024] S6: The bottom end of the substrate glass is attached to the curved arc surface of the support beam. The drive motor drives the rotating beam to slide along the arc-shaped slide through the rotating connecting rod. The rotation of the rotating beam acts on the upper surface of the TFT glass.

[0025] S7: The gap between the top surface of the TFT glass and the negative pressure fixing beam is 0.1 to 0.3 mm. The stress point is formed on the support beam, and the TFT glass with the cut line is broken along the cut line.

[0026] Furthermore, capturing the preset cutting line position includes the following steps:

[0027] S201: The breaking translation component moves the breaking component towards the inside of the glass, so that the edge-searching vision component searches for the edge at the pre-marked cutting line position. If the pre-marked cutting line is found, the coordinates of the cutting line mark are measured, and the process jumps to step 204; if the pre-marked cutting line is not found, step 202 is executed.

[0028] S202: Raise the support beam. The support beam raises the TFT glass until the edge-tracking vision component detects the cutting line position. The coordinates of the cutting line mark are measured, and the process jumps to step 204. If the support beam is raised more than 0.1 to 0.3 mm above the top surface of the glass and no pre-drawn cutting line is found, then step 203 is executed.

[0029] S203: The zoom lens of the edge-checking vision component is switched to wide-angle mode, and the height of the support beam is gradually reduced. If the edge-checking vision component detects the cutting line position, the coordinates of the measured cutting line mark are used to execute step 204; if the cutting line position is not detected, an alarm is triggered and the machine is stopped.

[0030] S204: Lower the support beam back to its original position.

[0031] The beneficial effects of this invention are:

[0032] (1) The present invention provides an edge-following vision component, a breaking component, and a breaking translation component. The glass height adjustment mechanism of the lower breaking component helps to correct and eliminate the deflection deformation of the TFT glass substrate, improve the adjustment accuracy and edge-following efficiency. The upper breaking component is provided with a breaking position adjustment mechanism that can adjust the position according to the glass thickness to adapt to TFT glass substrates of various specifications. The breaking translation component drives the upper breaking mechanism and the lower breaking mechanism to move, ensuring that the breaking component moves to the breaking position and avoids cracks during the breaking process of the ear material.

[0033] (2) This invention can not only deal with the broken substrate glass due to slippage and deviation, but also has independent edge-tracking vision components on both sides of the conveyor belt. It is also suitable for glass offset with a certain rotation angle, which increases the viewing angle range and expands the edge-tracking probability. The viewing angle magnification and adjustment of the CCD vision zoom detection lens makes it easy to adjust the position of the broken component by the broken translation component. Attached Figure Description

[0034] The invention will now be further described with reference to the accompanying drawings.

[0035] Figure 1 This is a schematic diagram of the structure of the breaking component and the breaking translation component of the present invention;

[0036] Figure 2 This is a schematic diagram of the breaking component of the present invention reaching the edge-following position;

[0037] Figure 3 This is a schematic diagram of the support beam lifting the glass using the break-off component of the present invention;

[0038] Figure 4 This is a schematic diagram of the rotating beam of the present invention in its rotational state;

[0039] Figure 5 This is a front view of the present invention;

[0040] Figure 6 This is a schematic diagram of the structure of the present invention;

[0041] Figure 7 This is a schematic diagram of the negative pressure fixing beam of the present invention;

[0042] Figure 8This is a schematic diagram of the structure of the support baffle of the present invention;

[0043] Figure 9 This is a flowchart of the method for breaking various types of TFT glass according to the present invention.

[0044] In the diagram: 1. Inspection camera; 2. Support beam; 3. Drive motor; 4. Rotating connecting rod; 5. Arc-shaped slide; 6. Rotating beam; 7. Negative pressure fixing beam; 701. Support baffle; 702. Negative pressure suction nozzle groove; 703. Negative pressure interface; 8. Mounting bracket; 9. Break-off component mounting bracket plate; 10. Lower lifting rod; 11. Lead screw; 12. Upper lifting rod; 13. Translation slide; 14. Translation slide; 15. Inspection crossbeam; 16. Inspection lighting. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Example 1

[0047] Please see Figure 1-8 As shown, a precision breaking device for multi-variety TFT glass includes: a conveyor belt, an edge-tracking vision component, a breaking component, and a breaking translation component;

[0048] The glass breaking components are located on both sides of the conveyor belt. Each glass breaking component includes an upper breaking component and a lower breaking component. The lower breaking component is equipped with a glass height adjustment mechanism, and the upper breaking component is equipped with a breaking position adjustment mechanism. The breaking translation component is connected to the glass breaking components. Figure 6 As shown, there are four edge-following vision components, which are respectively distributed at the upstream and downstream positions on both sides of the conveyor belt.

[0049] The edge-tracing vision component uses a CCD vision zoom detection lens.

[0050] In one embodiment of the present invention, the upper breaking assembly includes: a breaking position adjustment mechanism, a rotating connecting rod 4, a breaking assembly mounting plate 9, a negative pressure fixing beam 7, and a rotating beam 6; the breaking position adjustment mechanism includes an upper lifting rod 12, the bottom end of which is connected to the breaking assembly mounting plate 9; one end of the rotating connecting rod 4 is connected to the output end of the drive motor 3, and the other end of the rotating connecting rod 4 is rotatably connected to the rotating beam 6 via a rotating shaft; the drive motor 3 is mounted on one side of the breaking assembly mounting plate 9.

[0051] In one embodiment of the present invention, an arc-shaped groove 5 is provided on the mounting plate 9 of the break-off component, and one side of the rotating beam 6 is slidably connected to the arc-shaped groove 5 by a slider, and the rotating beam 6 is located on one side of the negative pressure fixing beam 7.

[0052] In one embodiment of the present invention, the negative pressure fixing beam 7 is configured as a square pressure rod structure with a negative pressure cavity. A support baffle 701 is provided inside the negative pressure cavity of the negative pressure fixing beam 7. A through gap exists between the top of the support baffle 701 and the inner wall of the negative pressure cavity of the negative pressure fixing beam 7. A negative pressure suction nozzle groove 702 is provided at the bottom end of the negative pressure fixing beam 7 near the rotating beam 6. Negative pressure suction interfaces 703 are provided at both ends of the negative pressure fixing beam 7. The negative pressure suction interfaces 703 are connected to a negative pressure device, creating negative pressure within the negative pressure cavity of the negative pressure fixing beam 7, and drawing air in through the negative pressure suction nozzle groove 702. When the glass substrate is broken, the negative pressure within the negative pressure cavity of the negative pressure fixing beam 7 causes the debris generated during the breakage to be sucked into the negative pressure fixing beam 7, preventing debris from remaining on the glass surface and causing scratches or other damage.

[0053] In one embodiment of the present invention, the lower breaking assembly includes a support beam 2 and a glass height adjustment mechanism. The glass height adjustment mechanism includes a lower lifting rod 10. One side of the support beam 2 is connected to the output end of the lower lifting rod 10. The support beam 2 is located below the rotating beam 6 and the negative pressure fixing beam 7. Half of the top surface of the support beam 2 is a plane, and the other half of the top surface of the support beam 2 is set as a curved arc surface.

[0054] In one embodiment of the present invention, the breaking translation component includes: a translation slide 14, a lead screw 11, and a translation slide block 13. The top end of the translation slide 14 is slidably connected to the translation slide block 13, and the interior of the translation slide block 13 is connected to the lead screw 11 through a lead screw ring. One end of the lead screw 11 is connected to a lead screw motor.

[0055] In one embodiment of the present invention, the upper lifting rod 12 and the lower lifting rod 10 of the breaking assembly are mounted to one side of the translation slide 13 via the mounting bracket 8.

[0056] In one embodiment of the present invention, a patrol beam 15 is provided on one side of the mounting frame 8. The patrol beam 15 is arranged parallel to the conveyor belt. There are two patrol beams 15 in total. The two patrol beams 15 are located on both sides of the conveyor belt. A patrol vision component is installed on the opposite side of the two patrol beams 15.

[0057] In one embodiment of the present invention, the edge-tracking vision component includes: an edge-tracking illumination lamp 16 and an edge-tracking lens 1, wherein the edge-tracking illumination lamp 16 is located on one side of the edge-tracking lens 1, and the edge-tracking lens 1 is configured as a CCD vision zoom detection lens.

[0058] The upper end of the support beam 2 has a semi-circular arc, which facilitates the stress extension of the substrate glass during the breaking process. The lower end is divided into a parabolic corner, which facilitates the falling of the broken piece and prevents the broken piece from curling upwards and causing damage or cracking. Located at the negative pressure fixing beam 7

[0059] By rotating the center of beam 6 to be concentric with the semicircular arc at the upper end of support beam 2, the force-bearing surface adheres to the semicircular arc of support beam 2 during the rotation, generating stress on the cutting line of the substrate glass and eliminating the cracks in the substrate glass.

[0060] Example 2

[0061] Please see Figure 1-9 As shown, a method for breaking various types of TFT glass includes the following steps:

[0062] S1: The TFT glass with the cutting line marked is conveyed to the stop position by the conveyor belt. The breaking and translation component pushes the breaking mechanism to move towards the conveyor belt until it reaches the preset edge-tracking position, such as... Figure 2 As shown. The preset method for determining the edge inspection position is as follows: When the machine is turned on each day or the product batch changes, at the beginning of production, the lens is set to a wide field of view to roughly locate the scribing position range. The edge inspection vision component is moved to align the image center with the vicinity of the scribing line. The zoom lens is then switched to telephoto focus to obtain the accurate scribing position for further position correction. This position is defined as the effective edge inspection position for the same batch. Subsequent products will use this as the reference for grasping the scribing position on the glass, enabling basic tracking of the approximate range of different batches of products, facilitating rapid positioning of the scribing position for subsequent precise edge inspection.

[0063] S2: The edge-tracking vision component captures the position of the cutting line;

[0064] S3: The edge-following vision component transmits the position coordinate data of the cutting line to the CCD vision inspection system. The CCD vision inspection system corrects the position coordinate data of the cutting line by referring to the zoom lens parameter coefficient of the edge-following vision component, and obtains the actual position coordinate data of the cutting line.

[0065] S4: The breaking translation component is driven to move to the measured cutting line position until the negative pressure fixing beam 7 and the rotating beam 6 of the breaking component are respectively located on both sides of the cutting line.

[0066] S5: As Figure 3 As shown, the lower lifting rod 10 drives the support beam 2 to rise to the top plane of the conveyor belt; the upper lifting rod 12 drives the negative pressure fixing beam 7 and the rotating beam 6 to descend until the gap between the negative pressure fixing beam 7 and the rotating beam 6 and the support beam 2 is the thickness of the TFT glass + 0.1~0.3mm.

[0067] S6: As Figure 4As shown, the bottom end of the substrate glass is attached to the curved arc surface of the support beam 2. The drive motor 3 drives the rotating beam 6 to slide along the arc-shaped slide groove 5 through the rotating connecting rod 4. The rotating beam 6 rotates and acts on the upper surface of the TFT glass.

[0068] S7: The top surface of the TFT glass is separated from the negative pressure fixing beam 7 by a gap of 0.1 to 0.3 mm. The stress point is formed on the support beam 2, and the TFT glass with the cut line is broken along the cut line.

[0069] In this embodiment, as the image clarity changes, the support beam adheres better to the underside of the substrate glass, which can further reduce glass warping differences.

[0070] In this embodiment, the negative pressure fixing beam 7 and the rotating beam 6 of the breaking component are located on both sides of the cutting line. The negative pressure fixing beam has a buffer anti-slip material to prevent the glass from being scratched or changing position. It has a height difference of 0.1 to 0.3 mm with the glass surface, which reduces the chipping of the edge in traditional hard breaking.

[0071] Furthermore, capturing the preset cutting line position includes the following steps:

[0072] S201: The breaking translation component moves the breaking component towards the inside of the glass, so that the edge-searching vision component searches for the edge at the pre-marked cutting line position. If the pre-marked cutting line is found, the coordinates of the cutting line mark are measured, and the process jumps to step 204; if the pre-marked cutting line is not found, step 202 is executed.

[0073] S202: Raise the support beam. The support beam raises the TFT glass until the edge-tracking vision component detects the cutting line position. The coordinates of the cutting line mark are measured, and the process jumps to step 204. If the support beam is raised more than 0.1 to 0.3 mm above the top surface of the glass and no pre-drawn cutting line is found, then step 203 is executed.

[0074] S203: The zoom lens of the edge-checking vision component is switched to wide-angle mode, and the height of the support beam is gradually reduced. If the edge-checking vision component detects the cutting line position, the coordinates of the measured cutting line mark are used to execute step 204; if the cutting line position is not detected, an alarm is triggered and the machine is stopped.

[0075] S204: Lower the support beam back to its original position.

[0076] In the description of this invention, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "multiple" means two or more.

[0077] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0078] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A method of snapping a multi-variety TFT glass, characterized by, The method comprises the following steps: S1: the TFT glass with cutting lines is conveyed to a stop position by a conveying belt, a breaking translation assembly pushes a breaking mechanism to move to the conveying belt to a preset edge inspection position; The breaking translation assembly comprises a translation slide (14), a lead screw (11) and a translation slide base (13), the top end of the translation slide (14) is slidably connected with the translation slide base (13), the inside of the translation slide base (13) is connected with the lead screw (11) through a lead screw ring, and one end of the lead screw (11) is connected to a lead screw motor; S2: the edge inspection vision assembly captures the position of the cutting lines; S3: the edge inspection vision assembly transmits the position coordinate data of the cutting lines to a CCD vision detection system, the CCD vision detection system corrects the position coordinate data of the cutting lines according to the zoom lens parameter coefficient of the edge inspection vision assembly to obtain actual position coordinate data of the cutting lines; S4: the breaking translation assembly drives the breaking assembly to move to the measured position of the cutting lines until the negative pressure fixing beam (7) and the rotating beam (6) of the breaking assembly are respectively located on the two sides of the cutting lines; The breaking assembly is located on the two sides of the conveying belt, the breaking assembly comprises an upper breaking assembly and a lower breaking assembly, the lower breaking assembly is provided with a glass height adjusting mechanism, the upper breaking assembly is provided with a breaking position adjusting mechanism, and the breaking translation assembly is connected to the breaking assembly; the edge inspection vision assembly is provided with four, and the four edge inspection vision assemblies are respectively distributed at upstream positions and downstream positions on the two sides of the conveying belt; The upper breaking assembly comprises a breaking position adjusting mechanism, a rotating connecting rod (4), a breaking assembly mounting rack plate (9), a negative pressure fixing beam (7) and a rotating beam (6); the breaking position adjusting mechanism comprises an upper lifting rod (12), the bottom end of the upper lifting rod (12) is connected to the breaking assembly mounting rack plate (9); one end of the rotating connecting rod (4) is connected to the output end of a driving motor (3), the other end of the rotating connecting rod (4) is rotationally connected with the rotating beam (6) through a rotating shaft, and the driving motor (3) is mounted on one side of the breaking assembly mounting rack plate (9); The lower breaking assembly comprises a supporting beam (2) and a glass height adjusting mechanism, the glass height adjusting mechanism comprises a lower lifting rod (10), one side of the supporting beam (2) is connected to the output end of the lower lifting rod (10), the supporting beam (2) is located below the rotating beam (6) and the negative pressure fixing beam (7), and one half of the top surface of the supporting beam (2) is a plane, and the other half of the top surface of the supporting beam (2) is a curved arc surface; S5: the lower lifting rod (10) drives the supporting beam (2) to rise to the top end plane of the conveying belt, the upper lifting rod (12) drives the negative pressure fixing beam (7) and the rotating beam (6) to descend until the gap between the negative pressure fixing beam (7) and the rotating beam (6) and the supporting beam (2) is the thickness of the TFT glass + 0.1~0.3mm; S6: the bottom end of the base glass adheres to the curved arc surface of the supporting beam (2), the driving motor (3) drives the rotating beam (6) to slide along the arc-shaped sliding groove (5) through the rotating connecting rod (4), and the rotating beam (6) rotates on the upper surface of the TFT glass. S7: TFT glass top surface and negative pressure fixed beam (7) interval 0.1~0.3mm gap, stress point in the beam (2) on the formation of stress point, draw cutting line TFT glass along the cutting line breakage.

2. The method of claim 1, wherein the plurality of TFT glass sheets are of different types. Capture the preset cutting line position, comprising the following steps: S201: break translation component drive break component to the inside of the glass moving, so that the edge of the visual component in the pre-marked cutting line position for edge, if found pre-marked cutting line, then measure the cutting line mark coordinates, jump to step 204; if not found pre-marked cutting line, then execute step 202; S202: lifting beam (2), beam (2) lifting TFT glass until the edge of the visual component found cutting line position, measure the cutting line mark coordinates, jump to step 204; if the beam (2) lifting more than 0.1~0.3mm height of glass top surface, not found pre-marked cutting line, then execute step 203; S203: edge of the visual component of the edge of the lens (1) zoom head change to wide angle mode, while gradually reducing the height of the beam (2), if the edge of the visual component found cutting line position, measure the cutting line mark coordinates, execute step 204; if not found cutting line position, then alarm stop; S204: reduce the beam (2) back to the original position.

3. A precise breaking device of multi-variety TFT glass, characterized in that, Including: Conveyer belt, edge of the visual component, break component and break translation component; The break component is respectively located on both sides of the conveyer belt, the break component comprises an upper break component and a lower break component, the lower break component is provided with a glass height adjusting mechanism, the upper break component is provided with a break position adjusting mechanism, and the break translation component is connected to the break component; the edge of the visual component is provided with four, and the four edge of the visual component is respectively distributed at upstream positions and downstream positions on both sides of the conveyer belt; Wherein, the edge of the visual component adopts a CCD visual zoom detection lens; The upper break component comprises a break position adjusting mechanism, a rotating connecting rod (4), a break component mounting rack plate (9), a negative pressure fixed beam (7) and a rotating beam (6); the break position adjusting mechanism comprises a lifting rod (12), and the bottom end of the lifting rod (12) is connected to the break component mounting rack plate (9); one end of the rotating connecting rod (4) is connected to the output end of a driving motor (3), the other end of the rotating connecting rod (4) is rotationally connected with the rotating beam (6) through a rotating shaft, and the driving motor (3) is mounted on one side of the break component mounting rack plate (9); An arc-shaped sliding groove (5) is formed in the break component mounting rack plate (9), one side of the rotating beam (6) is slidingly connected with the arc-shaped sliding groove (5) through a sliding block, and the rotating beam (6) is located on one side of the negative pressure fixed beam (7); The lower break component comprises a beam (2) and a glass height adjusting mechanism, the glass height adjusting mechanism comprises a lower lifting rod (10), one side of the beam (2) is connected to the output end of the lower lifting rod (10), the beam (2) is located below the rotating beam (6) and the negative pressure fixed beam (7), and one half of the top surface of the beam (2) is a plane, and the other half of the top surface of the beam (2) is provided as a curved arc surface; The upper lifting rod (12) and the lower lifting rod (10) of the breaking assembly are installed to one side of the translation slide (13) through the mounting rack (8); The mounting rack (8) is provided with edge-patrolling cross beams (15) on one side, the edge-patrolling cross beams (15) are arranged in parallel with the conveying belt, there are two edge-patrolling cross beams (15) in total, the two edge-patrolling cross beams (15) are respectively located on the two sides of the conveying belt, and the opposite sides of the two edge-patrolling cross beams (15) are provided with edge-patrolling visual assemblies.

4. The apparatus for accurate breaking of multi-species TFT glass according to claim 3, wherein, The negative pressure fixing beam (7) is provided in the square pressing rod structure with the negative pressure cavity, the support baffle (701) is arranged in the negative pressure cavity of the negative pressure fixing beam (7), the top of the support baffle (701) is provided with a through gap relative to the inner wall of the negative pressure cavity of the negative pressure fixing beam (7), the bottom end of the negative pressure fixing beam (7) is provided with a negative pressure suction nozzle groove (702) on the side close to the rotating beam (6), and the two ends of the negative pressure fixing beam (7) are provided with negative pressure extraction interfaces (703).

5. The apparatus for accurate breaking of multi-species TFT glass according to claim 3, wherein, The breaking translation assembly comprises a translation slide (14), a lead screw (11) and a translation slide (13), the top end of the translation slide (14) is slidably connected with the translation slide (13), the inside of the translation slide (13) is connected with the lead screw (11) through a lead screw ring sleeve, and one end of the lead screw (11) is connected to a lead screw motor.

6. The apparatus for accurate breaking of multi-species TFT glass according to claim 3, wherein, The edge-patrolling visual assembly comprises edge-patrolling illuminating lamps (16) and edge-patrolling lenses (1), the edge-patrolling illuminating lamps (16) are located on one side of the edge-patrolling lenses (1), and the edge-patrolling lenses (1) are provided as CCD visual zoom detection lenses.

Images