Transportation device for backlight module production

Abstract

The invention provides a conveying device for backlight module production, which is applied to the technical field of conveying devices for backlight module production, and is characterized in that the conveying device comprises a rack, and a feeding mechanism, an air floatation conveying mechanism and a visual inspection mechanism which are sequentially arranged on the rack; the air floatation conveying mechanism comprises an air floatation conveying platform; the air floatation platform comprises an air floatation conveying section which is close to one side of the feeding mechanism and is used for conveying the backlight module and an air floatation retention section which is close to one side of the visual detection mechanism and is used for stopping conveying the backlight module; the visual detection mechanism comprises a visual detection assembly which is arranged on the rack and is used for carrying out visual detection on the front surfaces of the backlight modules in the conveying process, and a grabbing and overturning assembly which is used for grabbing the backlight modules on the air floatation retention section and overturning the backlight modules by 90 degrees so that the visual detection assembly can carry out visual detection on the back surfaces of the backlight modules; the non-contact conveying device has the technical effects that non-contact conveying in the production of the backlight module is realized, and the conveying surface of the backlight module is prevented from being polluted and damaged.

Description

Technical Field

[0001] This invention relates to the technical field of conveying devices for backlight module production, and in particular to a conveying device for backlight module production. Background Technology

[0002] The backlight module (BLU) is the core light-emitting component in modern liquid crystal displays (LCDs). Its performance and quality directly determine the brightness uniformity, color performance, and overall reliability of the display panel. A backlight module typically consists of multiple layers of precision optical films, including a light guide plate, reflective sheet, diffuser film, and prism film (brightness enhancement film). These optical films, especially the outermost prism film and diffuser film, usually have intricate micro-optical structures on their surfaces and are made of relatively soft materials (such as PET and PC). They are extremely sensitive to physical contact and are easily damaged by friction and scratches, resulting in micro-scratches that are difficult to repair. When the backlight module is lit, these scratches form visible bright lines, dark spots, or hazy defects, severely impairing the uniformity of the displayed image.

[0003] However, on existing automated production lines for backlight modules, material conveying mainly relies on contact conveying devices (roller conveyors, belt conveyors, etc.). However, in addition to causing direct physical scratches, this conveying method also causes serious electrostatic damage, becoming one of the key process bottlenecks restricting the improvement of backlight module product yield. Summary of the Invention

[0004] The purpose of this invention is to provide a transport device for backlight module production, which has the advantage of enabling non-contact transport in backlight module production, thus avoiding contamination and damage to the transport surface of the backlight module.

[0005] To achieve the above and other related objectives, the present invention provides the following technical solution:

[0006] A transport device for backlight module production includes a frame and a feeding mechanism for feeding backlight modules, an air-floating conveying mechanism for non-contact transport of backlight modules, and a visual inspection mechanism for visual inspection of the front and back of the backlight modules, all arranged sequentially on the frame.

[0007] The air-floating conveying mechanism includes an air-floating conveying platform fixedly installed on the frame. The air-floating platform includes an air-floating conveying section near the feeding mechanism for conveying the backlight module and an air-floating retention section near the vision inspection mechanism for stopping the conveying of the backlight module.

[0008] The visual inspection mechanism includes a visual inspection component mounted on a frame for visually inspecting the front of the backlight module during the conveying process, and a gripping and flipping component for gripping the backlight module on the air flotation retention section and flipping it 90° so that the visual inspection component can visually inspect its back side.

[0009] In one embodiment of the present invention, the feeding mechanism includes a buffer rack fixedly mounted on the frame for buffering backlight modules and a feeding robot for gripping backlight modules in the buffer rack.

[0010] In one embodiment of the present invention, the loading robot is provided with an XZ axis drive module on a buffer rack, a loading mounting frame fixedly installed on the actuating end of the XZ axis drive module, and a plurality of loading suction cups fixed on the loading mounting frame and connected to an external negative pressure device.

[0011] In one embodiment of the present invention, the air flotation conveying platform includes a main body and a plurality of air flotation holes formed on the top of the main body;

[0012] The main body is provided with a first air chamber that communicates with a number of air flotation holes, and the first air chamber is connected to an external air supply device.

[0013] In one embodiment of the present invention, a plurality of pressure sensors are provided on the top of the main body, and compensation air holes are provided on both sides of the pressure sensors.

[0014] The main body has a third air chamber that communicates with several compensating air holes.

[0015] In one embodiment of the present invention, a conveying hole is further provided on the main body of the air flotation conveying section. The conveying hole is obliquely opened on the top of the main body. A second air chamber communicating with a plurality of conveying holes is provided inside the main body. The second air chamber is connected to an external air supply device.

[0016] In one embodiment of the present invention, the visual inspection mechanism includes a first CCD camera fixedly mounted on an inspection support frame, a second CCD camera fixedly mounted on the inspection support frame, and a third CCD camera fixedly mounted on the inspection support frame.

[0017] In one embodiment of the present invention, the gripping and flipping assembly includes a flipping support frame fixed on a frame, a linear module disposed on the flipping support frame, and a gripping and flipping robot disposed on the actuating end of the linear module.

[0018] In one embodiment of the present invention, the gripping and flipping robot includes a connecting frame fixedly connected to the action end of a linear module, a gripping structure disposed on the connecting frame, and a flipping structure connected to the gripping structure;

[0019] The gripping mechanism includes a gripping cylinder fixedly mounted on a connecting frame, a gripping mounting frame, and several gripping suction cups fixedly mounted on the gripping mounting frame and connected to an external negative pressure device;

[0020] The gripping cylinder and the gripping mounting frame are connected by a flipping structure.

[0021] In one embodiment of the present invention, the flipping structure includes a flipping support frame fixedly connected to the piston rod of the gripping cylinder, a flipping cylinder fixedly installed on the flipping support frame, a hinge seat fixedly connected to the piston rod of the flipping cylinder and horizontally slidably connected to the flipping support frame, and a connecting U-shaped frame hinged to the hinge seat and fixedly connected to the gripping mounting frame.

[0022] A guide plate is fixedly installed on the flip support plate, and a guide hole with a right angle structure is provided on the guide plate. A guide shaft that slides in the guide hole is provided on the connecting U-shaped frame.

[0023] As described above, the transport device for backlight module production of the present invention has the following beneficial effects:

[0024] 1. The feeding mechanism is used to feed the backlight module, and the air-floating conveyor platform is used to achieve non-contact conveying of the backlight module, avoiding contamination and damage to the conveying surface of the backlight module; the vision inspection mechanism is used to monitor the front side of the backlight module during conveying. When the backlight module is conveyed to the air-floating retention section, the conveying stops. At this time, the gripping and flipping component is used to grip the backlight module on the air-floating retention section and flip it 90°. The vision inspection mechanism then performs visual inspection on the back side of the backlight module again, thereby realizing visual inspection of the backlight module while it is being conveyed, improving production efficiency and product quality.

[0025] 2. The air flotation holes are used to form a uniform and stable air film, lifting the product to achieve non-contact suspension; the conveying holes are opened at an angle, which can form an airflow along the conveying direction to convey the suspended product; the pressure sensor monitors the pressure of the conveyed product on the air flotation conveying platform in real time; when the air flotation holes are blocked, the product will tilt and may make physical contact or collision with the air flotation conveying platform; at this time, the pressure sensor reading may be abnormal; at this time, the pressure sensor will replenish air through the compensation air holes on both sides to adjust the product posture, avoid the product contacting the air flotation conveying platform, and achieve non-contact product conveying. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the feeding mechanism according to an embodiment of the present invention;

[0028] Figure 3This is a schematic diagram of the structure of the air flotation conveying platform according to an embodiment of the present invention;

[0029] Figure 4 yes Figure 3 Enlarged diagram of part A in the middle;

[0030] Figure 5 This is a cross-sectional view of the air flotation conveying section in the air flotation conveying platform of this invention embodiment;

[0031] Figure 6 This is a schematic diagram of the structure of the visual inspection mechanism according to an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the grasping and flipping component in the grasping state according to an embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the gripping and flipping component in a flipped state according to an embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the structure of the guide plate according to an embodiment of the present invention.

[0035] Reference numerals: 1. Frame; 2. Feeding mechanism; 21. Buffer rack; 211. Buffer layer; 212. Buffer slot; 22. Feeding robot; 221. XZ axis drive module; 222. Feeding mounting frame; 223. Feeding suction cup; 3. Air flotation conveying mechanism; 31. Air flotation conveying platform; 311. Air flotation conveying section; 312. Air flotation retention section; 313. Main body; 314. Air flotation hole; 3141. First air chamber; 315. Pressure sensor; 316. Compensation air hole; 3161. Third air chamber; 317. Conveying hole; 3171. Second air chamber; 4. Vision inspection mechanism; 41. Vision inspection component; 4 11. Detection support frame; 412. First CCD camera; 413. Second CCD camera; 42. Grasping and flipping assembly; 421. Flipping support frame; 422. Linear module; 423. Grasping and flipping robot; 4231. Connecting frame; 4232. Grasping structure; 42321. Grasping cylinder; 42322. Grasping mounting frame; 42323. Grasping suction cup; 4233. Flipping structure; 42331. Flipping support frame; 42332. Flipping cylinder; 42333. Hinge seat; 42334. Connecting U-shaped frame; 42335. Guide plate; 42336. Guide hole; 42337. Guide shaft. Detailed Implementation

[0036] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0037] Please see Figures 1 to 9It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0038] Example 1

[0039] Please see Figure 1 The present invention provides a transport device for backlight module production, including a frame 1 and a feeding mechanism 2, an air flotation conveying mechanism 3 and a vision inspection mechanism 4 arranged sequentially on the frame 1;

[0040] Please see Figure 2 The feeding mechanism 2 is used for automatic feeding of backlight modules. Specifically, the feeding mechanism 2 includes a buffer rack 21 fixedly installed on the frame 1 and a feeding robot 22 for gripping the backlight modules in the buffer rack 21. The buffer rack 21 is used to temporarily store backlight modules waiting to be transported. The buffer rack 21 has a multi-layered buffer layer 211 inside. The buffer layer 211 has a buffer slot 212 for accommodating the backlight modules. The buffer layer 211 is wrapped with a rubber layer for protecting the backlight modules. The feeding robot 22 includes a feed mechanism positioned above the buffer rack 21. The XZ axis drive module 221, the loading mounting frame 222 fixedly installed on the moving end of the XZ axis drive module 221, and several loading suction cups 223 fixed on the loading mounting frame 222 and connected to the external negative pressure equipment; the XZ axis drive module 221 can drive the loading mounting frame 222 to move in the horizontal (X axis) and vertical (Z axis) directions, thereby accurately positioning it at any material position in the buffer frame 21; during operation, the loading suction cups 223 adsorb the backlight module under the action of negative pressure, and the XZ axis drive module 221 smoothly transfers it to the starting end of the air flotation conveying mechanism 3.

[0041] Please see Figure 3 , Figure 4 and Figure 5The air-floating conveyor 3 is used for non-contact conveying of the backlight module; wherein the air-floating conveyor 3 includes an air-floating conveying platform 31 fixedly installed on the frame 1; the air-floating conveying platform 31 is further divided into an air-floating conveying section 311 near the feeding mechanism 2 and an air-floating holding section 312 near the vision inspection mechanism 4; the air-floating conveying section 311 is responsible for smoothly conveying the backlight module from upstream to the inspection station, while the air-floating holding section 312 is used to temporarily stop the backlight module for flipping and back-side inspection;

[0042] The air flotation conveying platform 31 includes a main body 313 and several air flotation holes 314 opened on the top of the main body 313. The main body 313 is provided with a first air chamber 3141 that communicates with the several air flotation holes 314. The first air chamber 3141 is connected to an external air supply device (such as a clean air source, a precision pressure regulating valve, etc.) through a pipeline. During operation, clean compressed gas (usually dry air or nitrogen) is regulated to a suitable pressure by the external air supply device and then introduced into the first air chamber 3141. It is evenly sprayed upward from all the air flotation holes 314, forming a uniform and stable air film between the top surface of the main body 313 and the bottom surface of the backlight module. This air film completely lifts the backlight module, making it suspended and physically isolated from the conveying platform, thereby completely avoiding friction and scratches during the conveying process.

[0043] Please see Figure 3 , Figure 4 and Figure 5 To achieve the conveying function, a conveying hole 317 is provided on the main body 313 located in the air flotation conveying section 311. The conveying hole 317 is inclined at a certain angle (e.g., 30° to 60°) on the top of the main body 313, and its opening inclination direction is consistent with the conveying direction. A second air chamber 3171 is provided inside the main body 313 and communicates with several conveying holes 317. The second air chamber 3171 is also connected to an external air supply device. When the inclined conveying hole 317 ejects airflow, the component of the airflow direction will act on the side of the suspended backlight module, generating a thrust along the conveying direction, thereby driving the backlight module to move forward along the air flotation conveying platform 31. By adjusting the air supply pressure of the conveying hole 317, the conveying speed of the backlight module can be precisely controlled.

[0044] Please see Figure 3 , Figure 4 and Figure 5To ensure the stability and safety of the conveying process and prevent the product from contacting the platform due to blockage of air vents, the top of the main body 313 is equipped with several pressure sensors 315. The pressure sensors 315 monitor the pressure distribution in the air film support area in real time. On both sides of the pressure sensors 315, there are corresponding compensation air vents 316. The main body 313 is also equipped with a third air chamber 3161 that communicates with the compensation air vents 316. When any pressure sensor 315 detects an abnormal increase in pressure in its area (which may mean that the air film is thinning or the product is sinking), the control system will immediately instruct the corresponding compensation air vents 316 on both sides of the sensor to open, supplementing airflow from the side to lift the edge of the sinking product or correct its tilting posture, ensuring that the product remains in a stable non-contact suspension state throughout the entire conveying process.

[0045] Please see Figure 6 , Figure 7 and Figure 8 The visual inspection mechanism 4 is used to perform visual inspection of the front and back of the backlight module during the conveying process; the visual inspection mechanism 4 includes a visual inspection component 41 and a gripping and flipping component 42 mounted on the frame 1.

[0046] The visual inspection component 41 includes an inspection support frame 411 fixedly mounted on the frame 1, a first CCD camera 412 vertically fixed on the inspection support frame 411, and a second CCD camera 413 horizontally fixed on the inspection support frame 411; wherein the lens side of the first CCD camera 412 is arranged downward, and the lens side of the second CCD camera 413 is arranged facing the gripping and flipping component 42; when the backlight module is conveyed through the inspection station on the air-float conveying section 311, the first CCD camera 412 located above it performs online scanning and imaging of its front surface (usually the optical film surface) to detect whether there are defects such as scratches, dirt, and foreign objects;

[0047] Please see Figure 6 , Figure 7 and Figure 8 The gripping and flipping assembly 42 is used to grip and flip the backlight module that is stuck on the air flotation retention section 312 so that the vision inspection assembly 41 can inspect its back side. The gripping and flipping assembly 42 includes a flipping support frame 42331421 fixed on the frame 1, a linear module 422 set on the flipping support frame 42331421, and a gripping and flipping robot arm 423 set on the moving end of the linear module 422.

[0048] Please see Figure 6 , Figure 7 and Figure 8The specific structure of the gripping and flipping robot 423 is as follows: it includes a connecting frame 4231 fixedly connected to the action end of the linear module 422, a gripping structure 4232 set on the connecting frame 4231, and a flipping structure 4233 connected to the gripping structure 4232.

[0049] The gripping structure 4232 includes a gripping cylinder 42321 fixedly mounted on the connecting frame 4231, a gripping mounting frame 42322, and a plurality of gripping suction cups 42323 fixedly mounted on the gripping mounting frame 42322 and connected to an external negative pressure device. The piston rod of the gripping cylinder 42321 is connected to the gripping mounting frame 42322 through the flipping structure 4233, which can drive the gripping mounting frame 42322 and the gripping suction cups 42323 to move in the vertical direction to perform gripping and placement actions.

[0050] Please see Figure 8 and Figure 9 The flipping structure 4233 is used to achieve a 90° flip of the gripped product. The flipping structure 4233 includes a flipping support frame 42331421 fixedly connected to the piston rod of the gripping cylinder 42321, a flipping cylinder 42332 fixedly installed on the flipping support frame 42331421, a hinge seat 42333 fixedly connected to the piston rod of the flipping cylinder 42332 and horizontally slidably connected to the flipping support frame 42331421 through a guide rail slider mechanism, and a connecting U-shaped frame 42334 hinged to the hinge seat 42333 and fixedly connected to the gripping mounting frame 42322.

[0051] A guide plate 42335 is fixedly installed on the flipping support frame 42331421. The guide plate 42335 has a right-angled guide hole 42336. A guide shaft 42337 that can slide within the guide hole 42336 is installed on the connecting U-shaped frame 42334. When the piston rod of the flipping cylinder 42332 extends or retracts, it drives the hinge seat 42333 to move horizontally, forcing the guide shaft 42337 on the connecting U-shaped frame 42334 to move along the right-angled guide hole 42336, thereby driving the entire gripping mounting frame 42322 and the adsorbed product to complete a precise 90° flipping motion around the hinge point. This mechanical guide flipping structure 4233 operates stably and reliably, with high positioning accuracy.

[0052] Example 2

[0053] In the air flotation conveying mechanism 3, a high-precision proportional valve and flow sensor are connected between the external air supply equipment and the air flotation conveying platform 31 to form a closed-loop control system. The control system dynamically adjusts the air supply pressure and flow rate of the first air chamber 3141 (for suspension) and the second air chamber 3171 (for propulsion) according to the preset conveying speed model and the real-time data fed back by the pressure sensor 315, so as to achieve smooth acceleration, uniform speed operation and precise deceleration and stopping of the backlight module. In particular, when the backlight module is about to enter the air flotation retention section 312, the system can gradually reduce the air supply pressure of the second air chamber 3171 and use the vertical air film generated by the air flotation hole 314 to perform "soft braking" so that the product stops gently and without impact at the predetermined position.

[0054] Brief description of usage:

[0055] 1. Loading: The loading robot 22 picks up a backlight module from the buffer rack 21 and places it precisely at the starting end of the air flotation conveying section 311 of the air flotation conveying platform 31;

[0056] 2. Suspension and transport: When the external clean air source is turned on, gas is ejected from the air flotation hole 314 to form a stable air film, which lifts and suspends the backlight module; at the same time, the airflow ejected from the inclined transport hole 317 generates thrust, driving the backlight module to be transported smoothly forward along the platform.

[0057] 3. Front-facing online inspection: When the backlight module is conveyed past the visual inspection component 41, the first CCD camera 412 above it performs front-facing image acquisition and defect analysis.

[0058] 4. Retention and gripping: The backlight module is conveyed to the air flotation retention section 312 and stops. The linear module 422 of the gripping and flipping assembly 42 drives the gripping and flipping robot 423 to move above the product. The gripping cylinder 42321 descends and the gripping suction cup 42323 adsorbs the product.

[0059] 5. Flipping and Backside Inspection: The gripping cylinder 42321 lifts the product, and then the flipping cylinder 42332 moves to precisely flip the product by 90° through the flipping structure 4233; the linear module 422 can be moved and adjusted to align the backside of the product with the second CCD camera 413 to complete the backside visual inspection.

[0060] 6. Unloading: After inspection, the gripping and flipping robot 423 flips the product back to its original position and places it in the next section or unloading assembly line;

[0061] 7. Safety monitoring: Throughout the entire conveying process, the pressure sensor array 315 continuously monitors the air film status; once an abnormal pressure point is detected, the corresponding area's compensation air hole 316 is immediately triggered to spray air for attitude correction, preventing the product from contacting the platform and ensuring contactless conveying throughout the entire process.

[0062] In summary, the transport device of the present invention achieves completely non-contact levitation transport of the backlight module through the air-floating conveyor platform 31, fundamentally eliminating scratches and static electricity caused by mechanical contact; the integrated online visual inspection and automatic flip inspection functions achieve full coverage and high-efficiency quality inspection of both sides of the product without interrupting the main transport process or setting up multiple additional inspection stations; the pressure monitoring and active compensation system further ensures the reliability of non-contact transport; the device has an ingenious structural design and a high degree of automation, which can significantly improve the production quality, yield and production efficiency of the backlight module.

[0063] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A transport device for backlight module production, characterized in that: It includes a frame (1) and a feeding mechanism (2) for feeding backlight modules, an air-floating conveying mechanism (3) for non-contact conveying of backlight modules, and a visual inspection mechanism (4) for visual inspection of the front and back of the backlight modules. The air-floating conveying mechanism (3) includes an air-floating conveying platform (31) fixedly installed on the frame (1). The air-floating platform includes an air-floating conveying section (311) near the feeding mechanism (2) for conveying the backlight module and an air-floating stagnation section (312) near the vision inspection mechanism (4) for stopping the conveying of the backlight module. The visual inspection mechanism (4) includes a visual inspection component (41) mounted on the frame (1) for visually inspecting the front of the backlight module during the conveying process, and a gripping and flipping component (42) for gripping the backlight module on the air flotation retention section (312) and flipping it 90° so that the visual inspection component (41) can visually inspect its back side.

2. The conveying device for backlight module production according to claim 1, characterized in that: The feeding mechanism (2) includes a buffer rack (21) fixedly installed on the frame (1) for buffering backlight modules and a feeding robot (22) for gripping backlight modules in the buffer rack (21).

3. The conveying device for backlight module production according to claim 2, characterized in that: The loading robot (22) is equipped with an XZ axis drive module (221) on a buffer frame (21), a loading mounting frame (222) fixedly installed on the moving end of the XZ axis drive module (221), and several loading suction cups (223) fixed on the loading mounting frame (222) and connected to an external negative pressure device.

4. The conveying device for backlight module production according to claim 1, characterized in that: The air flotation conveying platform (31) includes a main body (313) and a plurality of air flotation holes (314) opened on the top of the main body (313); The main body (313) is provided with a first air chamber (3141) that communicates with a plurality of air flotation holes (314), and the first air chamber (3141) is connected to an external air supply device.

5. A conveying device for backlight module production according to claim 4, characterized in that: The main body (313) is provided with a plurality of pressure sensors (315) on its top, and compensation vents (316) are provided on both sides of the pressure sensors (315). The main body (313) has a third air chamber (3161) that communicates with a number of compensating air holes (316).

6. A conveying device for backlight module production according to claim 5, characterized in that: A conveying hole (317) is also provided on the main body (313) of the air flotation conveying section (311). The conveying hole (317) is inclinedly opened on the top of the main body (313). A second air chamber (3171) communicating with several conveying holes (317) is provided in the main body (313). The second air chamber (3171) is connected to an external air supply device.

7. A conveying device for backlight module production according to claim 1, characterized in that: The visual inspection mechanism (4) includes a first CCD camera (412) fixedly installed on the inspection support frame (411), a second CCD camera (413) fixedly installed on the inspection support frame (411).

8. A conveying device for backlight module production according to claim 1, characterized in that: The gripping and flipping assembly (42) includes a flipping support frame (42331)(421) fixed on the frame (1), a linear module (422) set on the flipping support frame (42331)(421), and a gripping and flipping robot (423) set on the moving end of the linear module (422).

9. A conveying device for backlight module production according to claim 8, characterized in that: The gripping and flipping robot (423) includes a connecting frame (4231) fixedly connected to the moving end of the linear module (422), a gripping structure (4232) disposed on the connecting frame (4231), and a flipping structure (4233) connected to the gripping structure (4232); The gripping mechanism includes a gripping cylinder (42321) fixedly mounted on a connecting frame (4231), a gripping mounting frame (42322), and a plurality of gripping suction cups (42323) fixedly mounted on the gripping mounting frame (42322) and connected to an external negative pressure device; The gripping cylinder (42321) and the gripping mounting frame (42322) are connected by a flipping structure (4233).

10. A conveying device for backlight module production according to claim 9, characterized in that: The flipping structure (4233) includes a flipping support frame (42331)(421) fixedly connected to the piston rod of the gripping cylinder (42321), a flipping cylinder (42332) fixedly installed on the flipping support frame (42331)(421), a hinge seat (42333) fixedly connected to the piston rod of the flipping cylinder (42332) and horizontally slidably connected to the flipping support frame (42331)(421), and a connecting U-shaped frame (42334) hinged to the hinge seat (42333) and fixedly connected to the gripping mounting frame (42322); A guide plate (42335) is fixedly installed on the flip support plate. The guide plate (42335) is provided with a guide hole (42336) with a right angle structure. The connecting U-shaped frame (42334) is provided with a guide shaft (42337) that slides in the guide hole (42336).

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