Dimension inspection bench for OCA optical film die cutting processing

Abstract

The invention relates to a size inspection bench for OCA optical film die cutting processing, and belongs to the technical field of OCA optical film inspection equipment.The size inspection bench comprises an inspection bench body, and a transverse size inspection device and a vertical size inspection device are arranged on the inspection bench body; the transverse size inspection device and the vertical size inspection device each comprise a limiting plate, a pressure sensor, a first controller and a first warning indicator, when the OCA optical film enters the position between the limiting plates through the first conveying belt, the OCA optical film makes contact with the surface of the pressure sensor and does not apply pressure to the pressure sensor, and the first warning indicator is in a non-working state; the transverse size inspection device and the vertical size inspection device further comprise a laser generator, a light sensor, a second controller and a second warning indicator, and when the OCA optical film makes contact with the limiting plate and moves forwards, light generated by the laser generator passes through the OCA optical film and then directly irradiates the light sensor; the method has the advantage of improving the dimension inspection efficiency of the OCA optical film.

Description

Technical Field

[0001] This application relates to the technical field of OCA optical film inspection equipment, and particularly to a dimensional inspection table for die-cutting and processing of OCA optical films. Background Art

[0002] OCA optical film is a high-performance transparent adhesive film used in display devices, mainly for bonding different optical components (such as touch screens, display screens, glass covers, etc.), while maintaining high light transmittance, low haze, and reducing interface reflection to improve the display effect. OCA optical film is usually made of optical acrylic glue, with a release film laminated on each of the upper and lower layers.

[0003] After the OCA optical film is produced, it is usually wound around a core, and then the OCA optical film is slit according to the usage scenario. The slit OCA optical film is measured and inspected in various dimensions, such as outer dimensions, edge profiles, adhesive layer thickness, light transmittance, and low haze. When inspecting the outer dimensions, it mostly relies on manual measurement item by item using tools such as calipers and two-dimensional image measuring instruments, or visually inspecting for defects such as edge burrs and glue overflow.

[0004] However, when manually measuring piece by piece, the measurement efficiency is low. Even when using a two-dimensional image measuring instrument for measurement, there are still many processing steps (such as image acquisition, image processing, feature extraction, size calculation, and then result output), which also leads to low measurement efficiency. Summary of the Invention

[0005] To improve the inspection efficiency of the OCA optical film size, this application provides a dimensional inspection table for die-cutting and processing of OCA optical films.

[0006] The dimensional inspection table for die-cutting and processing of OCA optical films provided by this application adopts the following technical solutions: A dimensional inspection table for die-cutting and processing of OCA optical films includes an inspection table, on which a conveying device, a transverse dimension inspection device, and a vertical dimension inspection device are arranged. The conveying device includes a first conveyor belt, conveying rollers, and a conveying motor arranged on the inspection table. The first conveyor belt is wound around the conveying rollers, and the conveying motor is used to drive the conveying rollers to rotate; The horizontal dimension inspection device and the vertical dimension inspection device both include a limiting plate, a pressure sensor, a first controller, and a first warning device. There are two limiting plates for both the horizontal dimension inspection device and the vertical dimension inspection device, which are respectively arranged on both sides of the first conveyor belt. The pressure sensor is arranged in a strip shape on the limiting plate. The first controller is electrically connected to the pressure sensor, and the first warning device is electrically connected to the first controller. When the OCA optical film enters between the limiting plates through the first conveyor belt, the OCA optical film contacts the surface of the pressure sensor without applying pressure to the pressure sensor, and the first warning device is in a non-operating state; The horizontal dimension inspection device and the vertical dimension inspection device further include a laser generator, a light sensor, a second controller, and a second warning device. The light sensor is electrically connected to the second controller, and the second warning device is electrically connected to the second controller. The laser generator is arranged on the limiting plate and faces the first conveyor belt. The light generated by the laser generator is in contact with the limiting plate and directly irradiates the first conveyor belt. The light sensor is arranged on the first conveyor belt to receive the light generated by the laser generator. When the OCA optical film contacts the limiting plate and moves forward, the light generated by the laser generator passes through the OCA optical film and then directly irradiates the light sensor.

[0007] Optionally, the horizontal dimension inspection device and the vertical dimension inspection device are arranged at intervals along the conveying direction of the first conveyor belt. Removal devices are arranged both between the horizontal dimension inspection device and the vertical dimension inspection device and behind the vertical dimension inspection device. The removal device includes a first removal member and a second removal member. The first removal member and the second removal member are respectively located on both sides of the first conveyor belt. The first removal member is used to remove the OCA optical film from the first conveyor belt when the first warning device is operating, and the second removal member is used to remove the OCA optical film from the first conveyor belt when the second warning device is operating.

[0008] Optionally, both the first removal member and the second removal member include an air pump and an air pipe. The air pumps of the first removal member and the second removal member are respectively electrically connected to the first controller and the second controller, and the air pipe is arranged at the air outlet end of the air pump.

[0009] Optionally, two guiding plates are arranged in front of the horizontal dimension inspection device. The two guiding plates are respectively located on both sides of the first conveyor belt and are symmetrically distributed with respect to the midline of the first conveyor belt. The two guiding plates are slidably arranged on the inspection table. The sliding direction of the guiding plates is perpendicular to the conveying direction of the first conveyor belt. A first driving member for driving the guiding plates to approach each other so that the OCA optical film is located in the middle of the first conveyor belt is arranged on the inspection table. The OCA optical film enters between the limiting plates after passing through the guiding plates.

[0010] Optionally, a reversing member is provided between the horizontal dimension inspection device and the vertical dimension inspection device. The reversing member includes a reversing motor disposed on the inspection table and a suction cup disposed on the output shaft of the reversing motor. The output shaft of the reversing motor is perpendicular to the inspection table. An installation notch is formed in the middle of the first conveyor belt. The installation notch is formed along the circumferential direction of the first conveyor belt. The reversing motor is located on the center line of the installation notch.

[0011] Optionally, the reversing member further includes an electric push rod disposed on the inspection table. The electric push rod is located within the installation notch. The reversing motor is coaxially disposed on the output shaft of the electric push rod.

[0012] Optionally, an adjustment plate is provided between the reversing member and the vertical dimension inspection device. The adjustment plates are located on both sides of the first conveyor belt and are symmetrically arranged with respect to the center line of the first conveyor belt. The adjustment plates are slidably disposed on the inspection table. A second driving member is provided on the inspection table for driving the adjustment plates to slide so that the OCA optical film is located in the middle of the first conveyor belt.

[0013] Optionally, a second conveyor belt is provided on the inspection table. There are two second conveyor belts, which are respectively located on both sides of the first conveyor belt. The second conveyor belt is flush with the first conveyor belt. The conveying speeds of the second conveyor belt and the first conveyor belt are the same.

[0014] Optionally, a plurality of supporting rollers are provided inside both the first conveyor belt and the second conveyor belt. The supporting rollers are used to support the first conveyor belt and the second conveyor belt so that the OCA optical film is parallel to the inspection table.

[0015] Optionally, a plurality of air outlet holes are uniformly formed in the first conveyor belt. The air outlet holes are arranged in a rectangular array on the first conveyor belt. The air outlet holes are obliquely formed and obliquely face the edge of the first conveyor belt. Along the length direction of the first conveyor belt, the oblique directions of the air outlet holes in adjacent columns are opposite. A plurality of through holes are formed in the surface of the air pipe facing the air outlet holes.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: When inspecting the size of the OCA optical film, place the OCA optical film in the middle of the first conveyor belt. The first conveyor belt drives the OCA optical film to move. When the OCA optical film enters the lateral size inspection device during operation, the OCA optical film enters between two limit plates. If the size of the OCA optical film meets the design size, the OCA optical film will pass through the limit plates and move to the vertical size inspection device. When the size of the OCA optical film does not meet the design size, for example, when the width of the OCA optical film is greater than the design size, after the OCA optical film enters the limit plates, the side wall of the OCA optical film abuts against the pressure sensor. The pressure sensor receives the signal and transmits it to the first controller. The first controller transmits the signal to the first warning device, indicating that the OCA optical film passing through the limit plates does not meet the design size and it can be known that the width of the OCA optical film is larger. When the size of the OCA optical film is smaller than the design size, the light generated by the laser generator directly irradiates the light sensor, and the signal is transmitted to the second warning device through the second controller, indicating that the OCA optical film passing through the limit plates does not meet the design size and it can be known that the width of the OCA optical film is smaller. Through the above inspection method, the detection efficiency of the OCA optical film is improved, and the specific defects of the OCA optical film can be known. Description of the Drawings

[0017] Figure 1 is a schematic diagram of the overall structure of a size inspection table for die-cutting and processing of an OCA optical film according to an embodiment of the present application; Figure 2 is a schematic diagram of the structure of a lateral size inspection device in a size inspection table for die-cutting and processing of an OCA optical film according to an embodiment of the present application; Figure 3 is a schematic diagram of the structure of a vertical size inspection device in a size inspection table for die-cutting and processing of an OCA optical film according to an embodiment of the present application; Figure 4 is a schematic diagram of the structure of a removal member in a size inspection table for die-cutting and processing of an OCA optical film according to an embodiment of the present application; Figure 5 is Figure 3 an enlarged schematic diagram of part A in

[0018] Description of the reference numerals: 1. Inspection table; 2. Conveyor device; 21. First conveyor belt; 22. Conveyor roller; 23. Conveyor motor; 3. Lateral size inspection device; 31. Limit plate; 32. Pressure sensor; 33. First controller; 34. First warning device; 35. Laser generator; 36. Light sensor; 37; Second controller; 38. Second warning device; 4. Vertical size inspection device; 5. Removal device; 51. Air pump; 52. Air pipe; 6. Air outlet hole; 7. Through hole; 9. Guide plate; 10. First motor; 11. First bidirectional lead screw; 12. Commutator; 121. Commutation motor; 122. Suction cup; 123. Electric push rod; 13. Installation notch; 14. Adjustment plate; 15. Second motor; 16. Second bidirectional lead screw; 17. Second conveyor belt; 18. Supporting roller. Specific embodiments

[0019] The following will Figure 1 - be described Figure 5 in further detail in conjunction with the attached drawings

[0020] This application example discloses a dimensional inspection table for OCA optical film die-cutting processing. Referring to Figure 1 and Figure 2 , the dimensional inspection table for OCA optical film die-cutting processing includes an inspection table 1, on which a conveying device 2, a transverse dimensional inspection device 3 and a vertical dimensional inspection device 4 are arranged. The conveying device 2 includes a first conveyor belt 21, conveying rollers 22 and a conveying motor 23 arranged on the inspection table 1. The first conveyor belt 21 is wound around the conveying rollers 22, and the conveying motor 23 is used to drive the conveying rollers 22 to rotate. The conveying rollers 22 drive the first conveyor belt 21 to move forward to drive the OCA optical film forward; Referring to Figure 2 and Figure 3 , both the transverse dimensional inspection device 3 and the vertical dimensional inspection device 4 include a limiting plate 31, a pressure sensor 32, a first controller 33 and a first warning device 34. There are two limiting plates 31 for both the transverse dimensional inspection device 3 and the vertical dimensional inspection device 4, which are respectively arranged on both sides of the first conveyor belt 21. The distance between the two limiting plates 31 is equal to the standard width or standard length of the OCA optical film. The pressure sensor 32 is arranged in a strip shape on the limiting plate 31. The first controller 33 is electrically connected to the pressure sensor 32, and the first warning device 34 is electrically connected to the first controller 33. When the OCA optical film enters between the limiting plates 31 through the first conveyor belt 21, the OCA optical film contacts the surface of the pressure sensor 32 without applying pressure to the pressure sensor 32, and the first warning device 34 is in a non-working state; when the OCA optical film exceeds the designed width, after the OCA optical film enters between the limiting plates 31, the OCA optical film abuts against the pressure sensor 32. The first controller 33 receives the pressure signal and converts it into a control signal and then transmits it to the first warning device 34, indicating that the OCA optical film does not meet the designed dimensions; Referring to Figure 2 and Figure 3The lateral dimension inspection device 3 and the vertical dimension inspection device 4 also include a laser generator 35, a light sensor 36, a second controller 37 and a second alarm 38. The light sensor 36 is electrically connected to the second controller 37, and the second alarm 38 is electrically connected to the second controller 37. The laser generator 35 is arranged on the limit plate 31 and faces the first conveyor belt 21. The light generated by the laser generator 35 is in contact with the limit plate 31 and directly hits the first conveyor belt 21. The light sensor 36 is arranged on the first conveyor belt 21 and receives the light generated by the laser generator 35. A plurality of light sensors 36 are arranged and are arranged at intervals along the first conveyor belt 21. When the OCA optical film contacts the limit plate 31 and moves forward, the light generated by the laser generator 35 passes through the OCA optical film and then directly hits the light sensor 36. Compared with the light directly hitting the light sensor 36, the light intensity is reduced after passing through the OCA optical film and then directly hitting the light sensor 36; when the actual size of the OCA optical film is smaller than the designed size, the light directly hits the light sensor 36, and then is fed back through the second alarm 38.

[0021] In other embodiments, the light sensor 36 can be set on the inspection table 1, and a first notch is opened on the first conveyor belt 21 at a position corresponding to the light sensor 36. The first notch is opened along the first conveyor belt 21 in a circumferential direction to divide the first conveyor belt 21 into two parts. Light passes through the first notch and directly hits the light sensor 36.

[0022] Reference Figure 2 and Figure 3 In the embodiment of the present application, in order to facilitate the sorting out of OCA optical films with different types of defects after the size inspection of the OCA optical film, the transverse size inspection device 3 and the vertical size inspection device 4 are arranged at intervals along the conveying direction of the first conveyor belt 21, and a removal device 5 is provided between the transverse size inspection device 3 and the vertical size inspection device 4 and behind the vertical size inspection device 4. The removal device 5 includes a first removal member and a second removal member, and the first removal member and the second removal member are respectively located on both sides of the first conveyor belt 21. The first removal member is used to remove the OCA optical film from the first conveyor belt 21 when the first alarm 34 is working, and the second removal member is used to remove the OCA optical film from the first conveyor belt 21 when the second alarm 38 is working; after the OCA optical film passes through the transverse size inspection device 3 and the vertical size inspection device 4, if the width or length of the OCA optical film is too large, the first alarm 34 is working. At this time, the OCA optical film is removed from the first conveyor belt 21 by the first removal member acting on the OCA optical film. When the width or length of the OCA optical film is too small, the second alarm device 38 is activated. At this time, the OCA optical film is removed from the first conveyor belt 21 through the action of the second removal member on the OCA optical film.

[0023] In the embodiment of the present application, the first removal member and the second removal member are opposite to each other and move the OCA optical film to the opposite side.

[0024] Referring to Figure 2 and Figure 3 , in the embodiment of the present application, both the first removing member and the second removing member include an air pump 51 and an air pipe 52. The air pumps 51 of the first removing member and the second removing member are electrically connected to the first controller 33 and the second controller 37 respectively, and the air pipe 52 is arranged at the air outlet end of the air pump 51. When the first alarm 34 and the second alarm 38 are started, the first controller 33 and the second controller 37 control the corresponding air pumps 51. The air pumps 51 compress the gas and act on the OCA optical film through the air pipe 52, so that the OCA optical film is removed from the first conveyor belt 21. The operation is simple and convenient; and by acting on the OCA optical film with gas, the possibility of scratching or damaging the optical film is reduced, which is convenient for secondary processing of the OCA optical film with too large width or length, thereby improving the utilization rate of the OCA optical film.

[0025] Referring to Figure 2 , Figure 3 and Figure 4 , to further facilitate the removal of the OCA optical film from the first conveyor belt 21, a plurality of air outlet holes 6 are uniformly formed in the first conveyor belt 21. The air outlet holes 6 are arranged in a rectangular array on the first conveyor belt 21. The air outlet holes 6 are obliquely formed and obliquely formed toward the edge of the first conveyor belt 21. Along the length direction of the first conveyor belt 21, the oblique directions of the air outlet holes 6 in adjacent columns are opposite. A plurality of through holes 7 are formed in the surface of the air pipe 52 facing the air outlet holes 6; when the corresponding first alarm 34 or second alarm 38 is started, the corresponding air pump 51 is started. The air pump 51 discharges the compressed air toward the first conveyor belt 21 through the air pipe 52. The compressed air acts on the OCA optical film through the air outlet holes 6, so that the OCA optical film floats above the first conveyor belt 21 and is removed from the first conveyor belt 21 by the oblique air, thereby facilitating the removal of the OCA optical film. At the same time, the possibility of damaging the OCA optical film is reduced.

[0026] Referring to Figure 2, in the embodiment of the present application, after the OCA optical film is placed on the first conveyor belt 21, in order to adjust the OCA optical film to the middle of the first conveyor belt 21, so that it is convenient for the OCA optical film to enter between the two limiting plates 31 along the midline between the two limiting plates 31. There are two guiding plates 9 arranged in front of the lateral dimension inspection device 3. The two guiding plates 9 are respectively located on both sides of the first conveyor belt 21 and are symmetrically distributed along the midline of the first conveyor belt 21. The two guiding plates 9 are slidably arranged on the inspection table 1. The sliding direction of the guiding plate 9 is perpendicular to the conveying direction of the first conveyor belt 21. There is a first driving member on the inspection table 1 for driving the guiding plates 9 to approach each other so that the OCA optical film is located in the middle of the first conveyor belt 21. The first driving member includes a first motor 10 and a first bidirectional lead screw 11 arranged on the inspection table 1. The first bidirectional lead screw 11 is coaxially arranged on the output shaft of the first motor 10. The guiding plate 9 is threadedly connected to the threaded section of the first bidirectional lead screw 11. After the OCA optical film passes through the guiding plate 9, it enters between the limiting plates 31. After the OCA optical film is placed on the first conveyor belt 21, the first motor 10 is started. The first motor 10 drives the first bidirectional lead screw 11 to rotate. The first bidirectional lead screw 11 drives the two guiding plates 9 to approach each other and act on the OCA optical film, adjusting the position of the OCA optical film so that the OCA optical film is located in the middle of the first conveyor belt 21, thus facilitating the OCA optical film to enter between the limiting plates 31.

[0027] Refer to Figure 2 , Figure 3 and Figure 5 , in the embodiment of the present application, there is a reversing member 12 arranged between the lateral dimension inspection device 3 and the vertical dimension inspection device 4. The reversing member 12 includes a reversing motor 121 arranged on the inspection table 1 and a suction cup 122 arranged on the output shaft of the reversing motor 121. The output shaft of the reversing motor 121 is perpendicular to the inspection table 1. There is an installation notch 13 opened in the middle of the first conveyor belt 21. The installation notch 13 is opened along the circumferential direction of the first conveyor belt 21. The reversing motor 121 is located on the midline of the installation notch 13. When the OCA optical film runs to the suction cup 122 after passing through the limiting plates 31, the suction cup 122 adsorbs on the bottom of the OCA optical film. Then the reversing motor 121 is started. The reversing motor 121 drives the suction cup 122 to rotate 90 degrees. The suction cup 122 drives the OCA optical film to rotate 90 degrees, thus reversing the OCA optical film and facilitating the inspection of the length of the OCA optical film.

[0028] Refer to Figure 2 , Figure 3 and Figure 5Furthermore, the reversing member 12 also includes an electric push rod 123 arranged on the inspection table 1, the electric push rod 123 is located in the installation notch 13, and the reversing motor 121 is coaxially arranged on the output shaft of the electric push rod 123; when the electric push rod 123 is started, the electric push rod 123 pushes the reversing motor 121 to drive the suction cup 122 to contact the OCA optical film, thereby facilitating the adsorption and fixing of the OCA optical film; further, an air compressor and a compression tube are arranged on the inspection table 1, and the compression tube is arranged at the output end of the air compressor, and the other end is connected to the suction cup 122.

[0029] Reference Figure 3 When the direction of the OCA optical film is adjusted by 90 degrees, in order to ensure that the OCA optical film enters between the limit plates 31, an adjustment plate 14 is arranged between the reversing member 12 and the vertical dimension inspection device 4. The adjustment plates 14 are located on both sides of the first conveyor belt 21 and are symmetrically arranged with the center line of the first conveyor belt 21. The adjustment plate 14 is slidably arranged on the inspection table 1. The inspection table 1 is provided with a second driving member for driving the adjustment plate 14 to slide so that the OCA optical film is located in the middle of the first conveyor belt 21. The second driving member includes a second motor 15 and a second bidirectional lead screw 16 arranged on the inspection table 1. The second bidirectional lead screw 16 is coaxially arranged on the output shaft of the second motor 15. The adjustment plate 14 is threadedly connected to the threaded section on the second bidirectional lead screw 16. After passing through the adjustment plate 14, the OCA optical film enters between the limit plates 31.

[0030] Reference Figure 3 When the direction of the OCA optical film is adjusted, in order to facilitate the acceptance of the OCA optical film, a second conveyor belt 17 is arranged on the inspection table 1. Two second conveyor belts 17 are arranged and are respectively located on both sides of the first conveyor belt 21. The second conveyor belt 17 is flush with the first conveyor belt 21, and the conveying speeds of the second conveyor belt 17 and the first conveyor belt 21 are consistent; under the action of the second conveyor belt 17, the width of the first conveyor belt 21 is extended, which is convenient for accepting the edge of the OCA optical film.

[0031] Reference Figure 3 In the embodiment of the present application, a plurality of receiving rollers 18 are disposed in the first conveyor belt 21 and the second conveyor belt 17 , and the receiving rollers 18 are used to receive the first conveyor belt 21 and the second conveyor belt 17 so that the OCA optical film is parallel to the inspection table 1 .

[0032] The implementation principle of a dimension inspection station for OCA optical film die-cutting processing in the embodiment of the present application is as follows: When inspecting the size of the OCA optical film, place the OCA optical film in the middle of the first conveyor belt 21. The first conveyor belt 21 drives the OCA optical film to move. When the OCA optical film enters the transverse size inspection device 3 during operation, the OCA optical film enters between two limit plates 31. If the size of the OCA optical film meets the design size, the OCA optical film moves past the limit plates 31 and reaches the vertical size inspection device 4. When the size of the OCA optical film does not meet the design size, for example, when the width of the OCA optical film is greater than the design size, after the OCA optical film enters the limit plates 31, the side wall of the OCA optical film abuts against the pressure sensor 32. The pressure sensor 32 receives the signal and transmits it to the first controller 33. The first controller 33 transmits the signal to the first warning device 34, indicating that the OCA optical film passing through the limit plates 31 does not meet the design size and it can be known that the width of the OCA optical film is larger; When the size of the OCA optical film is smaller than the design size, the light generated by the laser generator 35 directly irradiates the light sensor 36. The signal is transmitted to the second warning device 38 through the second controller 37, indicating that the OCA optical film passing through the limit plates 31 does not meet the design size and it can be known that the width of the OCA optical film is smaller; When the corresponding first warning device 34 or second warning device 38 is activated, the corresponding air pump 51 is started. The air pump 51 discharges compressed air through the air pipe 52 towards the first conveyor belt 21. The compressed air acts on the OCA optical film through the air outlet holes 6, making the OCA optical film suspended above the first conveyor belt 21 and removed from the first conveyor belt 21 through the oblique air, facilitating the removal of the OCA optical film. At the same time, the possibility of damage to the OCA optical film is reduced.

[0033] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A dimension inspection table for OCA optical film die-cutting, characterized in that: The invention comprises an inspection platform (1), wherein a conveying device (2), a transverse dimension inspection device (3) and a vertical dimension inspection device (4) are arranged on the inspection platform (1), wherein the conveying device (2) comprises a first conveying belt (21), a conveying roller (22) and a conveying motor (23) arranged on the inspection platform (1), wherein the first conveying belt (21) is wound around the conveying roller (22), and the conveying motor (23) is used to drive the conveying roller (22) to rotate; The transverse dimension inspection device (3) and the vertical dimension inspection device (4) both comprise a limit plate (31), a pressure sensor (32), a first controller (33) and a first alarm (34); the limit plates (31) of the transverse dimension inspection device (3) and the vertical dimension inspection device (4) are both provided with two and are respectively provided on both sides of the first conveyor belt (21); the pressure sensor (32) is in the shape of a long strip and is provided on the limit plate (31); the first controller (33) is electrically connected to the pressure sensor (32); the first alarm (34) is electrically connected to the first controller (33); when the OCA optical film enters between the limit plates (31) via the first conveyor belt (21), the OCA optical film contacts the surface of the pressure sensor (32) without applying pressure to the pressure sensor (32); and the first alarm (34) is in a non-working state; The transverse dimension inspection device (3) and the vertical dimension inspection device (4) further include a laser generator (35), a light sensor (36), a second controller (37) and a second alarm (38); the light sensor (36) is electrically connected to the second controller (37); the second alarm (38) is electrically connected to the second controller (37); the laser generator (35) is arranged on the limit plate (31) and faces the first conveyor belt (21); the light generated by the laser generator (35) is in contact with the limit plate (31) and directly irradiates the first conveyor belt (21); the light sensor (36) is arranged on the first conveyor belt (21) and receives the light generated by the laser generator (35); when the OCA optical film contacts the limit plate (31) and moves forward, the light generated by the laser generator (35) passes through the OCA optical film and then directly irradiates the light sensor (36).

2. The dimension inspection table for OCA optical film die-cutting processing according to claim 1, characterized in that: The transverse dimension inspection device (3) and the vertical dimension inspection device (4) are arranged at intervals along the conveying direction of the first conveyor belt (21); a removal device (5) is provided between the transverse dimension inspection device (3) and the vertical dimension inspection device (4) and behind the vertical dimension inspection device (4); the removal device (5) comprises a first removal member and a second removal member, the first removal member and the second removal member are respectively located on both sides of the first conveyor belt (21); the first removal member is used to remove the OCA optical film from the first conveyor belt (21) when the first warning device (34) is working; the second removal member is used to remove the OCA optical film from the first conveyor belt (21) when the second warning device (38) is working.

3. The dimension inspection table for OCA optical film die-cutting according to claim 2, characterized in that: The first removal member and the second removal member both comprise an air pump (51) and an air pipe (52); the air pumps (51) of the first removal member and the second removal member are electrically connected to the first controller (33) and the second controller (37) respectively; and the air pipe (52) is arranged at the air outlet end of the air pump (51).

4. The dimension inspection table for OCA optical film die-cutting processing according to claim 1, characterized in that: Two guide plates (9) are arranged in front of the transverse dimension inspection device (3). The two guide plates (9) are respectively located on both sides of the first conveyor belt (21) and are symmetrically distributed with respect to the center line of the first conveyor belt (21). The two guide plates (9) are slidably arranged on the inspection platform (1). The sliding direction of the guide plates (9) is perpendicular to the conveying direction of the first conveyor belt (21). The inspection platform (1) is provided with a first driving member for driving the guide plates (9) to approach each other so that the OCA optical film is located in the middle of the first conveyor belt (21). After passing through the guide plates (9), the OCA optical film enters between the limiting plates (31).

5. The dimension inspection table for OCA optical film die-cutting processing according to claim 1, characterized in that: A reversing member (12) is arranged between the transverse dimension inspection device (3) and the vertical dimension inspection device (4), the reversing member (12) comprising a reversing motor (121) arranged on the inspection platform (1) and a suction cup (122) arranged on the output shaft of the reversing motor (121), the output shaft of the reversing motor (121) being perpendicular to the inspection platform (1), a mounting notch (13) being provided in the middle of the first conveyor belt (21), the mounting notch (13) being provided along the circumferential direction of the first conveyor belt (21), and the reversing motor (121) being located on the center line of the mounting notch (13).

6. The dimension inspection table for OCA optical film die-cutting according to claim 5, characterized in that: The reversing member (12) further comprises an electric push rod (123) arranged on the inspection table (1), wherein the electric push rod (123) is located in the installation notch (13), and the reversing motor (121) is coaxially arranged on the output shaft of the electric push rod (123).

7. The dimension inspection table for OCA optical film die-cutting according to claim 5, characterized in that: An adjustment plate (14) is arranged between the reversing member (12) and the vertical dimension inspection device (4); the adjustment plate (14) is located on both sides of the first conveyor belt (21) and is arranged symmetrically with respect to the center line of the first conveyor belt (21); the adjustment plate (14) is slidably arranged on the inspection table (1); and a second driving member is arranged on the inspection table (1) for driving the adjustment plate (14) to slide so that the OCA optical film is located in the middle of the first conveyor belt (21).

8. The dimension inspection table for OCA optical film die-cutting according to claim 5, characterized in that: The inspection table (1) is provided with a second conveyor belt (17), two second conveyor belts (17) are provided and are respectively located on both sides of the first conveyor belt (21), the second conveyor belt (17) is flush with the first conveyor belt (21), and the conveying speeds of the second conveyor belt (17) and the first conveyor belt (21) are consistent.

9. The dimension inspection table for OCA optical film die-cutting according to claim 8, characterized in that: A plurality of receiving rollers (18) are arranged inside the first conveyor belt (21) and the second conveyor belt (17), and the receiving rollers (18) are used to receive the first conveyor belt (21) and the second conveyor belt (17) so that the OCA optical film is parallel to the inspection table (1).

10. The dimension inspection table for OCA optical film die-cutting processing according to claim 3, characterized in that: A plurality of air outlet holes (6) are evenly arranged on the first conveyor belt (21); the air outlet holes (6) are arranged in a rectangular array on the first conveyor belt (21); the air outlet holes (6) are obliquely opened and obliquely opened toward the edge of the first conveyor belt (21); along the length direction of the first conveyor belt (21), the oblique directions of the air outlet holes (6) on adjacent rows are opposite; and a plurality of through holes (7) are opened on the surface of the air duct (52) facing the air outlet holes (6).

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