Light guide plate detection device

Abstract

The present application discloses a light guide plate detection device, which relates to the technical field of light guide plate detection. A light guide plate detection device includes a fixed plate, and a suspension mechanism for suspending the light guide plate is provided on the fixed plate; a driving mechanism is further provided on the fixed plate, and a clamping and detection mechanism is provided on the driving mechanism. The driving mechanism is used to drive the clamping and detection mechanism to move so as to clamp the suspended light guide plate and simultaneously detect the flatness of the two plate surfaces of the light guide plate; the present application can improve the efficiency of detecting the flatness of the light guide plate.

Description

Technical Field

[0001] The present application relates to the technical field of light guide plate detection, and in particular to a light guide plate detection device. Background Art

[0002] A light guide plate is a high-tech optical component, which is usually made of a highly transparent polymer material such as acrylic. Its internal structure mainly consists of a reflective surface and a light-emitting surface. The light guide plate can uniformly convert a point light source or a line light source into a surface light source. Specifically, it uses an optical-grade acrylic sheet to absorb the light emitted from the lamp and stay on the surface of the optical-grade acrylic sheet. When the light hits each light guide point, the reflected light will diffuse in different angles and destroy the reflection condition to be emitted from the front of the light guide plate. Currently, light guide plates are widely used in the field of image display. The quality of the light guide plate is related to the quality of subsequent image display. Typically, the flatness of the light guide plate surface is a key indicator of the quality of the light guide plate. The flatness detection of the light guide plate specifically includes the detection of protrusions and depressions on the plate surface. Currently, most of them are detected by workers observing with the naked eye, and auxiliary tools such as feeler gauges are used when necessary. Workers are prone to eye fatigue after long-term detection, and the detection efficiency is not high while being time-consuming and laborious. Summary of the Invention

[0003] In order to improve the efficiency of detecting the flatness of the light guide plate, the present application provides a light guide plate detection device.

[0004] A light guide plate detection device provided by the present application adopts the following technical solutions:

[0005] A light guide plate detection device includes a fixing plate, and a suspension mechanism for suspending the light guide plate is provided on the fixing plate; a driving mechanism is further provided on the fixing plate, and a clamping and detecting mechanism is provided on the driving mechanism. The driving mechanism is used to drive the clamping and detecting mechanism to move so as to clamp the suspended light guide plate and simultaneously detect the flatness of the two surfaces of the light guide plate.

[0006] By adopting the above technical solutions, the suspension device can be used to suspend the light guide plate, and then driving the driving mechanism can drive the clamping and detecting mechanism to clamp the light guide plate and perform detection at the same time. The present application can improve the efficiency of detecting the flatness of the light guide plate.

[0007] Preferably, the clamping and detecting mechanism includes a clamping member provided on the driving mechanism, and two oppositely arranged mounting blocks are provided on the clamping member; a clamping assembly and a detecting assembly are provided on each mounting block. The clamping member is used to drive the two mounting blocks to approach each other so that the two clamping assemblies clamp the light guide plate and at the same time the two detecting assemblies respectively detect the flatness of the two surfaces of the light guide plate.

[0008] By adopting the above technical solution, the two clamping components can clamp the light guide plate, and at the same time, the two detection components can respectively detect the flatness of the two plate surfaces of the light guide plate; the above actions have a short working cycle and high working efficiency.

[0009] Preferably, the clamping component includes a plurality of clamping columns, and a plurality of mounting holes are formed in the mounting block. Each clamping column is correspondingly and slidably arranged in a mounting hole; the position between the two mounting blocks is the clamping area, and each clamping column extends into the clamping area;

[0010] An installation groove is formed in the inner wall of each installation hole, an installation ring is arranged on the outer wall of each clamping column, the installation ring is located in the installation groove, a return spring is arranged on each installation ring, and the return spring is connected to the bottom of the installation groove;

[0011] An accommodating ring groove is further formed in the inner wall of each installation hole, an air inflation ring is arranged in each accommodating ring groove, an air flow channel is further formed in the installation block, the air flow channel is communicated with the inside of each air inflation ring, and the air flow channel extends and forms an air inlet on the outer wall of the installation block. The air inlet is connected with an elastic air pipe, and the elastic air pipe is connected with a workstation. The workstation is used to supply air to the air flow channel through the elastic air pipe so that the air inflation ring clamps the clamping column.

[0012] By adopting the above technical solution, after ensuring that the light guide plate is located between the two mounting blocks, the two mounting blocks are driven to approach each other by driving the clamping member. At this time, the plurality of clamping columns are abutted against the plate surface of the light guide plate, and then the workstation is used to supply air to the air inlet through the elastic air pipe. The gas will reach the plurality of air inflation rings through the elastic air pipe. The expansion of the air inflation ring will press the clamping column tightly so that the light guide plate is clamped.

[0013] Preferably, the detection component includes a detection line arranged on the mounting block, a storage battery and a signal lamp are arranged on the outer wall of the mounting block, and the storage battery and the signal lamp are both electrically connected to the detection line;

[0014] The detection line includes a plurality of break points on the wire body. One break point corresponds to one clamping column. Each clamping column includes an electric connection ring on the wall surface. The electric connection ring is used to access the detection line so that the break point is in a conducting state;

[0015] Under normal conditions, the electric connection ring is not connected to the detection line, and the signal lamp does not light up; when each electric connection ring is connected to the detection line, the signal lamp lights up.

[0016] By adopting the above technical solution, after the two mounting blocks approach each other so that the clamping columns abut against the surface of the light guide plate to be detected, the clamping member is driven to make the two mounting blocks continue to move towards each other. At this time, it is necessary to ensure that the clamping column moves until its electrical connection ring is connected to the detection line, so that the open circuit point corresponding to this clamping column becomes a closed circuit. If the flatness of the surface of the light guide plate meets the requirements, all the electrical connection rings will be connected to the detection line, so that the detection line remains in a closed circuit state, and the signal lamp will light up at this time. If the flatness of the surface of the light guide plate does not meet the requirements, that is, there is one or more depressions or protrusions on the surface of the light guide plate, one or more electrical connection rings will not be connected to the detection line, and the detection line still remains in an open circuit state, and the signal lamp will not light up at this time. The flatness of the surface of the light guide plate can be judged by the lighting / non-lighting of the signal lamp.

[0017] Preferably, each of the mounting holes is provided in a penetrating manner, and one end of each clamping column away from the clamping area extends to the external environment and is provided with a splicing block, and the end faces of the plurality of splicing blocks can be spliced into a plane.

[0018] By adopting the above technical solution, by observing whether the splicing blocks can be spliced into a plane, the flatness of the surface of the light guide plate can also be judged.

[0019] Preferably, the plurality of clamping columns are evenly distributed horizontally and vertically.

[0020] Preferably, each clamping column includes a flexible abutting portion near the end of the clamping area, and the wall surface of the flexible abutting portion is an arc surface.

[0021] Preferably, the suspension mechanism includes a manipulator provided on the fixed plate, and a clamping member is provided on the manipulator, and the clamping member is used for clamping the light guide plate.

[0022] By adopting the above technical solution, driving the manipulator can drive the clamping member to move to clamp the light guide plate and suspend it.

[0023] Preferably, the number of the clamping and detecting mechanisms is set to at least one.

[0024] By adopting the above technical solution, when the area of the surface of the light guide plate is large, a plurality of clamping and detecting mechanisms can be provided to meet the detection requirements.

[0025] In summary, the present invention includes at least one of the following beneficial technical effects:

[0026] 1. It is possible to use a suspension device to suspend the light guide plate, and then drive the driving mechanism to drive the clamping and detecting mechanism to clamp the light guide plate and perform detection at the same time. This application can improve the efficiency of detecting the flatness of the light guide plate;

[0027] 2. After ensuring that the light guide plate is located between the two mounting blocks, drive the clamping member to drive the two mounting blocks closer to each other so that the clamping column abuts against the surface of the light guide plate to be detected. Then, drive the clamping member again to make the two mounting blocks continue to move towards each other. At this time, it is necessary to ensure that the clamping column moves until its electrical connection ring is connected to the detection line, so that the break point corresponding to this clamping column becomes a conducting path. If the flatness of the light guide plate meets the requirements, all the electrical connection rings will be connected to the detection line, and the detection line will remain conducting. At this time, the signal lamp will light up. If the flatness of the light guide plate does not meet the requirements, that is, there is one or more depressions or protrusions on the surface of the light guide plate, one or more electrical connection rings will not be connected to the detection line, and the detection line will still remain in an open circuit state. At this time, the signal lamp will not light up. The flatness of the light guide plate can be judged by whether the signal lamp lights up or not. In the above state, use the workstation to supply gas to the air inlet through the flexible air pipe. The gas will reach the multiple air inflation rings through the flexible air pipe. The inflation of the air inflation rings will press the clamping column tightly, so that the light guide plate is clamped. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the overall structure of the light guide plate detection device in the embodiment of the present application;

[0029] Figure 2 is a cross-sectional view for showing the clamping and detecting mechanism;

[0030] Figure 3 is Figure 2 an enlarged view of part A in

[0031] Figure 4 is a schematic diagram for showing the structure of the clamping and detecting mechanism;

[0032] Figure 5 is Figure 2 an enlarged view of part B in

[0033] Reference numerals in the drawings: 1, fixed plate; 2, suspension mechanism; 21, manipulator; 22, clamping member; 3, driving mechanism; 31, mounting frame; 32, first reciprocating cylinder; 33, second reciprocating cylinder; 4, clamping and detecting mechanism; 41, clamping member; 42, mounting block; 43, clamping assembly; 431, clamping column; 4311, electrical connection ring; 4312, flexible abutting part; 432, mounting hole; 433, mounting groove; 434, mounting ring; 435, return spring; 436, receiving ring groove; 437, air inflation ring; 438, air flow channel; 4381, air inlet; 44, detection component; 441, detection line; 4411, break point; 442, storage battery; 443, signal lamp; 5, clamping area; 6, splicing block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The present invention will be further described in detail below with reference to the accompanying drawings.

[0035] In the description of the present invention, it should be understood that regarding the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0036] An embodiment of the present application discloses a light guide plate detection device, which is used to improve the efficiency of detecting the flatness of the light guide plate. Specifically, it is to detect whether there are depressions and protrusions on the plate surface of the light guide plate. In the present application, taking the detection of a cuboid-shaped light guide plate as an example.

[0037] Refer to Figure 1 , the light guide plate detection device includes a fixing plate 1, and a suspension mechanism 2 for suspending the light guide plate is provided on the fixing plate 1; a driving mechanism 3 is also provided on the fixing plate 1, and a clamping and detecting mechanism 4 is provided on the driving mechanism 3. The driving mechanism 3 is used to drive the clamping and detecting mechanism 4 to move so as to clamp the suspended light guide plate and simultaneously detect the flatness of the two plate surfaces of the light guide plate.

[0038] In this embodiment, the number of the clamping and detecting mechanisms 4 is one; in other embodiments, when the plate surface area of the light guide plate is large, multiple clamping and detecting mechanisms 4 need to be provided to improve the detection efficiency.

[0039] Refer to Figure 1 , the suspension mechanism 2 includes a manipulator 21 provided on the fixing plate 1. The specific structure of the manipulator 21 is the prior art, so it will not be described in detail here. A clamping member 22 is provided on the manipulator 21. The clamping member 22 is preferably a clamping cylinder, and the clamping member 22 is used to clamp and suspend the light guide plate.

[0040] In the present application, it is necessary to drive the manipulator 21 to drive the clamping member 22 to move so as to clamp the light guide plate conveyed from the previous process. Moreover, it is necessary to make the clamping member 22 clamp on the side wall surface of the light guide plate so that the opposite two plate surfaces of the light guide plate are exposed. In addition, the manipulator 21 suspends the light guide plate and ensures that the light guide plate is vertically arranged in the front-rear direction.

[0041] Refer to Figure 1 , specifically, the driving mechanism 3 includes a mounting frame 31 provided at the upper end of the fixing plate 1. A first reciprocating cylinder 32 is provided on the mounting frame 31. A second reciprocating cylinder 33 is provided on the first reciprocating cylinder 32. A clamping member 41 is provided on the second reciprocating cylinder 33. The first reciprocating cylinder 32 is used to drive the clamping and detecting mechanism 4 to move left and right, and the second reciprocating cylinder 33 is used to drive the clamping and detecting mechanism 4 to move up and down.

[0042] Refer to Figure 1 andFigure 2 The clamping and detecting mechanism 4 includes a clamping member 41 provided on the second reciprocating cylinder 33. The clamping member 41 is preferably a clamping cylinder. Two mounting blocks 42 are oppositely provided on the clamping member 41. A clamping assembly 43 and a detecting assembly 44 are provided on each mounting block 42. The clamping member 41 is used to drive the two mounting blocks 42 to approach each other, so that the two clamping assemblies 43 clamp the light guide plate and at the same time the two detecting assemblies 44 respectively detect the flatness of the two plate surfaces of the light guide plate.

[0043] Refer to Figure 2 and Figure 3 As shown in FIGS. Figure 1 The two clamping assemblies 43 have the same structure. Taking the structure of one of the clamping assemblies 43 as an example: The clamping assembly 43 includes a plurality of clamping columns 431 arranged horizontally. The clamping columns 431 are evenly distributed horizontally and vertically. A plurality of mounting holes 432 are formed in the mounting block 42. Each clamping column 431 is correspondingly slidably arranged in a mounting hole 432.

[0044] Refer to Figure 2 and Figure 3 As shown in FIGS.

[0045] Refer to Figure 2 and Figure 3 As shown in FIGS. Figure 4 An installation groove 433 is formed on the inner wall of each installation hole 432. An installation ring 434 is fixedly provided on the outer wall of each clamping column 431. The installation ring 434 is located in the installation groove 433. The installation ring 434 is located at the middle position of the installation groove 433. The installation ring 434 can move left and right in the installation groove 433. A return spring 435 is provided on each installation ring 434. When the return spring 435 is in a normal state, the return spring 435 is connected to the bottom of the installation groove 433. After the clamping column 431 moves left or right, it will be reset under the action of the return spring 435.

[0046] After the light guide plate is suspended, the first reciprocating cylinder 32 and the second reciprocating cylinder 33 are driven to drive the clamping member 41 to move so that the light guide plate is located between the two mounting blocks 42. Then, the clamping member 41 is driven to drive the two mounting blocks 42 to approach each other until the plurality of clamping columns 431 abut against the plate surface of the light guide plate and stop. Then, the workstation is used to supply gas to the air inlet 4381 through the elastic air pipe. The gas will reach the plurality of air inflation rings 437 through the elastic air pipe. The inflation of the air inflation rings 437 will press the clamping columns 431 tightly so that the light guide plate is clamped.

[0047] Refer to Figure 4 and Figure 5 , taking the structure of the left detection component 44 as an example: The detection component 44 includes a detection line 441 arranged on the mounting block 42. A storage battery 442 and a signal lamp 443 are arranged on the outer wall of the mounting block 42. The detection line 441 is divided into two sections. One section is located on the outer wall of the mounting block 42 and is connected to both the storage battery 442 and the signal lamp 443. The other section extends into the mounting block 42 and is distributed in a serpentine shape; The detection line 441 includes a plurality of break points 4411 on the wire body. One break point 4411 corresponds to one clamping column 431. Each clamping column 431 includes an electric connection ring 4311 on the wall surface. The electric connection ring 4311 is used to access the detection line 441 so that the break point 4411 changes from the open state to the closed state. Under normal conditions, the electric connection ring 4311 is not connected to the detection line 441, and the signal lamp 443 does not light up.

[0048] In this application, the plurality of electric connection rings 4311, the signal lamp 443 and the storage battery 442 are connected in series. When any one of the electric connection rings 4311 is not connected to the detection line 441, the signal lamp 443 does not light up; when all the electric connection rings 4311 are connected to the detection line 441, the signal lamp 443 will light up.

[0049] In this application, it is necessary to drive the clamping member 41 to drive the two mounting blocks 42 to move towards each other until the clamping column 431 moves until its electric connection ring 4311 is connected to the detection line 441 before it can stop. At this time, the break point 4411 corresponding to this clamping column 431 becomes a closed circuit.

[0050] If the flatness of the plate surface of the light guide plate meets the requirements, all the electric connection rings 4311 will be connected to the detection line 441 so that the detection line 441 remains in a closed circuit state. At this time, the signal lamp 443 will light up; if the flatness of the plate surface of the light guide plate does not meet the requirements, that is, there is one or more depressions or protrusions on the plate surface of the light guide plate, one or more electric connection rings 4311 will not be connected to the detection line 441, and the detection line 441 still remains in an open circuit state. At this time, the signal lamp 443 will not light up. Whether the signal lamp 443 lights up or not can be used to judge the flatness of the plate surface of the light guide plate.

[0051] Refer to Figure 4 and Figure 5, when the depressions or protrusions on the surface of the light guide plate are small, the electrical connection loop 4311 of the clamping post 431 corresponding to the depression may still be connected to the detection line 441, and the signal lamp 443 may still be on. In order to detect such small depressions or protrusions, each mounting hole 432 is provided to penetrate through, and one end of each clamping post 431 away from the clamping area 5 extends to the external environment and is provided with a splicing block 6. Under normal conditions, combined with Figure 1 , the end faces of the plurality of splicing blocks 6 away from the clamping area 5 form a plane.

[0052] When there is a clamping post 431 against a depression or protrusion, the splicing block 6 on this clamping post 431 will be misaligned in the left-right direction. By observing whether the splicing blocks 6 can form a plane, it is also possible to judge the flatness of the surface of the light guide plate and the position of the depression or protrusion on the light guide plate.

[0053] Refer to Figure 4 , the structure of each clamping post 431 is the same. Taking the structure of one clamping post 431 as an example: each clamping post 431 includes a flexible abutting portion 4312 near the end of the clamping area 5. The material of the flexible abutting portion 4312 is rubber, and the wall surface of the flexible abutting portion 4312 is an arc surface.

[0054] The implementation principle of the light guide plate detection device in the embodiment of the present application is as follows:

[0055] Drive the manipulator 21 to drive the clamping member 22 to move so as to clamp the light guide plate conveyed from the previous process. Moreover, ensure that the clamping member 22 clamps on the side wall surface of the light guide plate so that the opposite two plate surfaces of the light guide plate are exposed. After that, the manipulator 21 suspends the light guide plate;

[0056] Drive the first reciprocating cylinder 32 and the second reciprocating cylinder 33 to drive the clamping member 41 to move so that the light guide plate is located between the two mounting blocks 42. Then drive the clamping member 41 to drive the two mounting blocks 42 to approach each other until the electrical connection loop 4311 of the clamping post 431 is connected to the detection line 441 and stop. At this time, the clamping post 431 abuts against the surface of the light guide plate. Then use the workstation to supply gas to the air inlet 4381 through the elastic air pipe. The gas will reach the plurality of air inflation rings 437 through the elastic air pipe. The expansion of the air inflation rings 437 will press the clamping post 431 tightly so that the light guide plate is clamped; at the same time, judge the flatness of the surface of the light guide plate by the on / off of the signal lamp 443. When the signal lamp 443 is on, the flatness of the corresponding plate surface of the light guide plate meets the requirements. When the signal lamp 443 is off, the flatness of the corresponding plate surface of the light guide plate does not meet the requirements, that is, there are depressions or protrusions on the surface of the light guide plate.

[0057] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A light guide plate detection device, characterized in that: The invention comprises a fixing plate (1), wherein the fixing plate (1) is provided with a suspension mechanism (2) for suspending a light guide plate; the fixing plate (1) is also provided with a driving mechanism (3), wherein the driving mechanism (3) is provided with a clamping detection mechanism (4), wherein the driving mechanism (3) is used to drive the clamping detection mechanism (4) to move so as to clamp the suspended light guide plate and simultaneously perform a flatness detection on the two plate surfaces of the light guide plate; The clamping detection mechanism (4) comprises a clamping member (41) arranged on the driving mechanism (3); the clamping member (41) is provided with two mounting blocks (42) arranged opposite to each other; each mounting block (42) is provided with a clamping assembly (43) and a detection assembly (44); the clamping member (41) is used to drive the two mounting blocks (42) to approach each other so that the two clamping assemblies (43) clamp the light guide plate and simultaneously the two detection assemblies (44) respectively perform flatness detection on the two plate surfaces of the light guide plate; The clamping assembly (43) comprises a plurality of clamping columns (431), the mounting block (42) is provided with a plurality of mounting holes (432), and each clamping column (431) is slidably disposed in a corresponding mounting hole (432); the position between the two mounting blocks (42) is a clamping area (5), and each clamping column (431) extends into the clamping area (5); A mounting groove (433) is formed on the inner wall of each mounting hole (432), a mounting ring (434) is formed on the outer wall of each clamping column (431), the mounting ring (434) is located in the mounting groove (433), and a return spring (435) is formed on each mounting ring (434), and the return spring (435) is connected to the bottom of the mounting groove (433); Each of the mounting holes (432) is arranged to penetrate, and one end of each of the clamping columns (431) away from the clamping area (5) extends to the external environment and is provided with an assembly block (6), and the end faces of a plurality of the assembly blocks (6) can be assembled into a plane.

2. The light guide plate detection device according to claim 1, characterized in that: Each of the mounting holes (432) is also provided with a receiving ring groove (436) on its inner wall, and an air expansion ring (437) is provided in each of the receiving ring grooves (436). An air flow channel (438) is also provided in the mounting block (42), and the air flow channel (438) is connected to the interior of each air expansion ring (437), and the air flow channel (438) extends to form an air inlet (4381) on the outer wall of the mounting block (42), and the air inlet (4381) is connected to an elastic air supply pipe, and the elastic air supply pipe is connected to a workstation, and the workstation is used to supply air to the air flow channel (438) through the elastic air supply pipe so that the air expansion ring (437) clamps the clamping column (431).

3. The light guide plate detection device according to claim 2, characterized in that: The detection assembly (44) comprises a detection line (441) arranged on the mounting block (42); a storage battery (442) and a signal light (443) are arranged on the outer wall of the mounting block (42); and the storage battery (442) and the signal light (443) are both electrically connected to the detection line (441); The detection line (441) includes a plurality of disconnection points (4411) on the line body, one disconnection point (4411) corresponds to one clamping column (431), and each clamping column (431) includes an electrical link (4311) on the wall surface, and the electrical link (4311) is used to connect the detection line (441) so as to make the disconnection point (4411) open; Under normal conditions, the electrical link (4311) is not connected to the detection line (441), and the signal light (443) is off; when each of the electrical links (4311) is connected to the detection line (441), the signal light (443) is on.

4. The light guide plate detection device according to claim 3, characterized in that: The plurality of clamping columns (431) are evenly distributed in the horizontal and vertical directions.

5. The light guide plate detection device according to claim 2, characterized in that: Each of the clamping columns (431) comprises a flexible abutment portion (4312) close to the end of the clamping area (5), and the wall surface of the flexible abutment portion (4312) is a curved surface.

6. The light guide plate detection device according to claim 1, characterized in that: The suspension mechanism (2) comprises a manipulator (21) arranged on the fixing plate (1), the manipulator (21) being provided with a clamping member (22), and the clamping member (22) being used for clamping the light guide plate.

7. The light guide plate detection device according to claim 1, characterized in that: The number of the clamping detection mechanism (4) is set to be at least one.

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