Production line for electronic whiteboards

Abstract

The application discloses a production line of an electronic whiteboard and belongs to the technical field of large-screen equipment processing and production. The production line comprises a dust-free workshop, a backboard loading device, a backboard processing device, an optical film mounting device, an OC assembling device, a semi-finished product overturning device, a backlight module mounting device, an electrical appliance mounting device, a frame assembling device and a transfer device which are sequentially arranged in the dust-free workshop along a conveying direction. The optical film mounting device is provided with a shakeable material taking suction cup which can effectively separate the adhered films. The OC assembling device is provided with an electromagnetic multi-way valve to adjust the suction force of the suction cup, so as to avoid the damage of the cell caused by the false suction. The semi-finished product overturning device is alternately matched with a double-buffer pad fixing device to lift and overturn the frame, so as to realize the 180-degree smooth overturning of the semi-finished product without manual intervention and the automatic circulation replacement of the buffer pad. The electronic whiteboard core process is integrated in an automatic assembly line, so that the whole-process unmanned and low-damage collaborative continuous production from the backboard loading to the finished product flowing out is realized.

Description

Technical Field

[0001] This invention belongs to the field of electronic whiteboard processing and production technology, and specifically refers to an electronic whiteboard production line. Background Technology

[0002] In the manufacturing of electronic whiteboards, LCD TVs, and commercial large-screen display equipment, the processing flow typically encompasses multiple stages, including optical film lamination, Open Cell (OC, i.e., open-type LCD panel) and backlight module assembly, semi-finished product flipping inspection, and material flow between workshops of different cleanliness levels (such as cleanrooms and ordinary assembly workshops). With the continuous increase in product size (commonly covering 86-inch to 120-inch sizes) and the popularization of ultra-thin designs, extremely stringent requirements have been placed on cleanliness, positioning accuracy, and damage resistance during the production process.

[0003] Currently, the industry generally adopts a stand-alone, discrete operation mode for the production of the aforementioned large-screen devices. This means that processes such as diaphragm installation, OC-assisted assembly, semi-finished product flipping, and workshop transfer are broken down into independent workstations or semi-automatic operating tables. Material connections between these workstations primarily rely on manual trolleys, simple lifting devices, or basic conveyor belts. This existing production organization method has at least three significant technical drawbacks: (1) The processes are isolated, severely hindering the production line cycle time. Although existing equipment such as film attaching machines, OC assembly tables, flipping machines, and transfer elevators have achieved partial mechanization, there is a lack of unified logistics coordination control logic and automatic material tracking system between the various devices. For example, the flipping of semi-finished products and the replacement of tooling pads (buffer pads) between workshops still rely heavily on manual handling, straightening, and posture adjustment. This prevents the entire production process from forming a continuous flow of automated operations, resulting in a large amount of waiting time and gaps in human intervention, which seriously restricts the ramp-up of production efficiency and capacity.

[0004] (2) Frequent manual and rigid mechanical interventions result in high damage and loss rates for large-size precision screens. Due to the lack of systematic flexible protection design for ultra-thin, large-area panels in existing production lines, irreversible damage is easily caused during various stages of production. Specifically: Firstly, material adhesion damage: In the process of picking up optical films, because the films are thin and easily generate static electricity, the existing conventional suction cups cannot effectively overcome the static attraction force, often resulting in the picking up of multiple films at one time, leading to material waste or poor overlap during mounting. Secondly, accidental suction damage to the screen: During the unpacking process before using the OC panel, the protective pads carried by the foam box need to be removed. However, the existing suction cups with fixed suction force cannot be adapted to protective pads of different materials and thicknesses. They are very easy to suck through the protective pads and accidentally damage the Cell substrate below, causing the core display panel to be scrapped. Third, screen cracking and contamination during flipping: When the semi-finished product needs to be flipped on both sides, the existing manual or simple mechanical flipping methods are prone to cracking due to uneven distribution of force points. In addition, the direct contact between human hands and the panel surface makes it easy for fingerprints, sweat stains and other contaminants to remain, which seriously affects the subsequent application of optical adhesive (OCA) and the quality of the whole machine assembly. Fourth, the risk of bumps and knocks during transit: Due to the lack of automatic pad changing and precise positioning adjustment functions during cross-workshop transfer, the edges of the screen are easily bumped when the tooling carrier is manually handled and changed. In addition, the positioning benchmark of the product between different processes (such as center placement and side placement) cannot be automatically converted, which further increases the risk of material jamming and alignment deviation.

[0005] (3) Lack of a unified material flow and positioning benchmark conversion mechanism, resulting in insufficient flexible production changeover capability. Different processing stages have different requirements for the structure of tooling pads (buffer pads) and the product placement benchmark (such as centering or side positioning). Existing independent transfer equipment or simple conveying devices have limited functions and cannot complete the automatic replacement and circulation of tooling pads during the synchronous process of automatic material lifting and conveying, nor can they adaptively adjust the product's placement posture in the horizontal plane. When product specifications change, it is often necessary to manually replace the fixtures or readjust the positioning blocks. The equipment has poor compatibility and seriously limits the production line's flexible production capability to handle multi-variety, small-batch orders.

[0006] In summary, existing modular, highly manual interactive whiteboard production equipment and line layouts are insufficient to meet the mass production demands of large-size, high-precision display devices for high efficiency, low damage, and high flexibility. Therefore, there is an urgent need in this field to develop an automated interactive whiteboard production line capable of highly integrating the aforementioned discrete processes, in order to systematically solve the comprehensive technical problems of poor production line coordination, high screen damage rates, and difficulties in changeover in existing technologies. Summary of the Invention

[0007] The main objective of this invention is to provide a production line for electronic whiteboards, which solves the problems existing in the prior art. It aims to solve the technical problems of poor production line coordination, high damage rate of large-size screens during circulation, and difficulty in flexible production change under the existing discrete single-machine operation mode, so as to realize unmanned, low-damage collaborative continuous production from backboard loading to finished product output.

[0008] To achieve the above objectives, the solution of the present invention is: An electronic whiteboard production line includes a cleanroom, and within the cleanroom, a backboard loading device, a backboard processing device, an optical film mounting device, an OC assembly device, a semi-finished product flipping device, a backlight module mounting device, an electrical installation device, a frame assembly device, and a transfer device. The backboard loading device supplies backboards to the production line. The backboard processing device includes a cutting device and a surface treatment device arranged sequentially along the conveying direction, used for cutting and surface treatment of the backboard, respectively. The optical film mounting device attaches optical films to the backboard. The OC assembly device… The equipment assembles cells and modules into an OC (Output Composition); the semi-finished product flipping device flips the semi-finished products after OC assembly; the backlight module installation device, electrical installation device, and frame assembly device are arranged sequentially along the conveying direction, and are used to complete the assembly of the backlight module, circuit and its interface, and frame, respectively; the transfer device is located at the junction of the cleanroom and the ordinary workshop, and is used to output the semi-finished products after frame assembly from the cleanroom to the ordinary workshop, and during the output process, the buffer pads carrying the semi-finished products are replaced from the cleanroom-specific buffer pads to the ordinary workshop-specific buffer pads.

[0009] Preferably, the timing of each processing device is coordinated by a unified control system, and each device has an adjustable structure to adapt to products of different specifications.

[0010] Preferably, the optical film mounting equipment includes a first equipment frame, a picking robot, a dispensing robot, a transfer table, a film stacking table, and a backplate positioning frame; the picking robot picks up a film from the film stacking table and transfers it to the transfer table, and the dispensing robot removes the film from the transfer table and attaches it to the backplate on the backplate positioning frame.

[0011] Preferably, the material handling robot includes a material handling bracket capable of XYZ three-axis movement and a plurality of material handling suction cups installed below the material handling bracket. The material handling suction cups are arranged in a rectangular array, and at least one of the four corners of the rectangular array is mounted on the material handling bracket by a material handling cylinder. The material handling cylinder can drive the corresponding material handling suction cup to reciprocate and extend to shake off the excess film adhering to it.

[0012] Preferably, the OC assembly equipment includes a second equipment frame, a first transfer robot, a second transfer robot, a first conveying device, an empty loading box, and an empty unloading box; the second equipment frame is divided into a processing station, a loading station, and an unloading station along a straight line; the first transfer robot transfers the protective pad and empty foam box from the loading station to the unloading station; the second transfer robot transfers the cell from the loading station to the processing station; the first conveying device is located at the processing station and is used to input the module and output the assembled OC.

[0013] Preferably, the first transfer manipulator is equipped with a first transfer suction cup and an electromagnetic multi-way valve. The electromagnetic multi-way valve is connected to an air source and has several channels with different flow rates. The air path of the first transfer suction cup is connected to the electromagnetic multi-way valve. Different channels are switched by electronic control to adjust the suction force of the suction cup and adapt to protective pads of different thicknesses and materials.

[0014] Preferably, the semi-finished product turning device includes a third equipment frame, a second conveying device, a lifting and turning device, a buffer pad fixing device, and a lifting device; the second conveying device is located inside the third equipment frame and is used to convey buffer pads containing semi-finished products; the lifting and turning device is located inside the third equipment frame and can be lifted, turned, and rotated; there are two buffer pad fixing devices, each used to fix one buffer pad, and the two buffer pad fixing devices interchange positions during the turning process of the lifting and turning device; the lifting device is located below the second conveying device and is used to push the buffer pad fixing device located below the second conveying device into the lifting and turning device.

[0015] Preferably, the two buffer pad fixing devices alternately participate in the production process as the inner frame mechanism and the outer frame mechanism, and at least one buffer pad is always kept in the lifting and flipping device to realize the automatic recycling of the buffer pad.

[0016] After adopting the above technical solution, the present invention has the following technical effects: (1) The present invention integrates the core processes of electronic whiteboard into an automated production line by sequentially setting backboard loading equipment, backboard processing equipment, optical film installation equipment, OC assembly equipment, semi-finished product flipping equipment, backlight module installation equipment, electrical installation equipment and frame assembly equipment along the conveying direction. This eliminates the manual handling and intermediate waiting links caused by the discrete process in the prior art, and greatly improves production efficiency.

[0017] (2) The present invention uses a material handling robot arm of the optical film mounting equipment to set a shaking material handling suction cup. The suction cup is driven by a cylinder to reciprocate in a short stroke, causing the corner of the film to shake to separate the excess film that is stuck together, ensuring that only a single target film is picked up. This effectively solves the problem of multiple films sticking together due to electrostatic adsorption in the film handling process, and avoids material waste and poor mounting overlap.

[0018] (3) The present invention uses an electromagnetic multi-way valve configured in the first transfer robot arm of the OC assembly equipment to adjust the suction force of the suction cup in real time to adapt to protective pads of different thicknesses and materials. This can not only stably adsorb the protective pads, but also avoid excessive suction force from penetrating the protective pads and accidentally damaging the cells below. This effectively reduces the scrap rate of the core display panel and improves the material yield and processing efficiency of the OC assembly process.

[0019] (4) The present invention sets up two alternating working buffer pad fixing devices in the semi-finished product flipping equipment, which, together with the 180° flipping of the lifting flipping frame, automatically completes the cycle replacement of the buffer pad while completing the smooth flipping of the semi-finished product. No manual intervention is required throughout the process, avoiding screen cracking, pollution and bump damage caused by manual flipping and handling, and greatly reducing the loss rate of large-size screens during the circulation process.

[0020] (5) The present invention integrates all processing equipment in a cleanroom, the layout of the whole line is compact and the timing of each piece of equipment is coordinated by a unified control system. At the same time, each piece of equipment has an adjustable structure to adapt to different specifications of products. It can quickly change production without frequently changing fixtures, which significantly improves the production line’s flexible production capacity to handle multiple varieties and small batch orders. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a production line according to a specific embodiment of the present invention.

[0022] Figure 2 This is a three-dimensional view of the optical film mounting device of the present invention.

[0023] Figure 3 This is a top view of the optical film mounting device of the present invention.

[0024] Figure 4 This is a perspective view of the material handling robot of the optical film mounting equipment of the present invention.

[0025] Figure 5 This is a side view of the material handling robot of the optical film mounting device of the present invention.

[0026] Figure 6 This is a perspective view of the unloading robot arm of the optical film mounting equipment of the present invention.

[0027] Figure 7 This is a perspective view of the film stacking platform of the optical film mounting device of the present invention.

[0028] Figure 8 This is a three-dimensional view of the OC assembly equipment of the present invention.

[0029] Figure 9 This is a front view of the overall OC assembly equipment of the present invention.

[0030] Figure 10 This is a top view of the OC assembly equipment of the present invention.

[0031] Figure 11 This is a perspective view of the first transfer robot arm of the OC assembly equipment of the present invention.

[0032] Figure 12 This is a front view of the first transfer robot arm of the OC assembly equipment of the present invention.

[0033] Figure 13 This is a perspective view of the second transfer robot arm of the OC assembly equipment of the present invention.

[0034] Figure 14 This is a front view of the second transfer robot arm of the OC assembly equipment of the present invention.

[0035] Figure 15 This is a perspective view of the semi-finished product flipping device of the present invention.

[0036] Figure 16 This is a schematic diagram of the lifting and flipping mechanism and the buffer pad fixing mechanism of the semi-finished product flipping device of the present invention.

[0037] Figure 17 This is a perspective view of the lifting and turning mechanism of the semi-finished product turning device of the present invention.

[0038] Figure 18 for Figure 17 Enlarged view of point A in the middle.

[0039] Figure 19 This is a perspective view of the buffer pad fixing mechanism of the semi-finished product flipping device of the present invention.

[0040] Figure 20 This is a perspective view of the lifting mechanism of the semi-finished product turning device of the present invention.

[0041] Explanation of icon numbers: 100-Backplate loading equipment; 200 - Backplate processing equipment; 300 - Optical film mounting equipment; 301 - First equipment frame; 302 - Material handling robot; 3021 - Material handling bracket; 3022 - Material handling suction cup; 3023 - Material handling cylinder; 3024 - Connecting plate; 3025 - First lifting bracket; 3026 - First Z-axis drive device; 3027 - First Y-axis drive device; 3028 - First X-axis drive device; 3029 - First L-shaped bracket; 303 - Feeding machine Robotic arm; 3031-Discharge bracket; 3032-Discharge suction cup; 3033-Second lifting bracket; 3034-Second Z-axis drive device; 3035-Second Y-axis drive device; 3036-Second X-axis drive device; 3037-Second L-shaped bracket; 304-Transfer platform; 305-Diaphragm stacking platform; 3051-Tablet; 30511-Positioning guide hole; 3052-Positioning column; 306-Back plate positioning frame.

[0042] 400-OC assembly equipment; 401-Second equipment frame; 402-First transfer robot; 4021-First transfer suction cup; 4022-Solenoid multi-way valve; 4023-Lifting plate; 4024-First X-axis slide bar; 4025-First Y-axis slide bar; 4026-First slide block; 4027-First sliding plate; 4028-Third Z-axis drive device; 4029-Guide rod; 403-Second transfer robot; 4031-Third lifting bracket; 4032-Second X-axis... 4033-Second Y-axis slide bar; 4034-Second slide block; 4035-Second transfer suction cup; 4036-Second sliding plate; 4037-Fourth lifting bracket; 4038-Fourth Z-axis drive device; 4039-Tilting cylinder; 404-First conveying device; 405-Loading empty box; 406-Unloading empty box; 407-Third X-axis drive device; 408-Transfer bracket; 410-Cell; a-Processing station; b-Loading station; c-Unloading station.

[0043] 500 - Semi-finished product turning device; 501 - Third equipment frame; 502 - Second conveying device; 503 - Lifting and turning device; 5031 - Lifting frame; 5032 - Rotating frame; 5033 - First clamp; 5034 - Rotary motor; 5035 - Auxiliary clamp; 5036 - Guide block; 504 - Buffer pad fixing device; 5041 - Fixed frame; 5042 - Second clamp; 5043 - Positioning block; 505 - Lifting device; 5051 - Ground support; 5052 - Lifting hydraulic cylinder; 5053 - Clamping block; 50531 - Clamping groove; 506 - Power mechanism; 5061 - Lifting motor; 5062 - Output sprocket.

[0044] 600 - Backlight module installation equipment; 700 - Electrical installation equipment; 800-Frame Assembly Equipment; 900 - Transit Equipment; 1000 - Cleanroom. Detailed Implementation

[0045] To further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0046] refer to Figures 1 to 20As shown, this invention discloses a production line for electronic whiteboards, including a cleanroom 1000, and a backboard loading device 100, a backboard processing device 200, an optical film mounting device 300, an OC assembly device 400, a semi-finished product flipping device 500, a backlight module mounting device 600, an electrical installation device 700, a frame assembly device 800, and a transfer device 900, all located within the cleanroom. The backboard loading device 100 supplies backboards to the production line. The backboard processing device 200 includes a cutting device and a surface treatment device arranged sequentially along the conveying direction, used for cutting and surface treatment of the backboards, respectively. The optical film mounting device 300 installs optical films... The chip is mounted onto the back panel; the OC assembly equipment 400 assembles the cell and module into an OC; the semi-finished product flipping equipment 500 flips the semi-finished product after OC assembly; the backlight module installation equipment 600, the electrical installation equipment 700, and the frame assembly equipment 800 are arranged sequentially along the conveying direction, and are used to complete the assembly of the backlight module, circuit and its interface, and frame, respectively; the transfer equipment 900 is located at the junction of the cleanroom 1000 and the ordinary workshop, and is used to output the semi-finished product after frame assembly from the cleanroom 1000 to the ordinary workshop, and during the output process, the buffer pad carrying the semi-finished product is replaced from the cleanroom-specific buffer pad to the ordinary workshop-specific buffer pad.

[0047] (1) The present invention integrates the core processes of electronic whiteboards into an automated production line by sequentially setting up a backboard loading equipment 100, a backboard processing equipment 200, an optical film installation equipment 300, an OC assembly equipment 400, a semi-finished product flipping equipment 500, a backlight module installation equipment 600, an electrical installation equipment 700, and a frame assembly equipment 800 along the conveying direction. This eliminates the manual handling and intermediate waiting links caused by the discrete processes in the prior art, and greatly improves production efficiency.

[0048] (2) The present invention integrates all processing equipment in a cleanroom, the layout of the whole line is compact and the timing of each piece of equipment is coordinated by a unified control system. At the same time, each piece of equipment has an adjustable structure to adapt to different specifications of products, and can quickly change production without frequent changes of fixtures.

[0049] The details of the present invention are described below with reference to the accompanying drawings: refer to Figures 2 to 7 As shown, the optical film mounting device 300 of the present invention is illustrated.

[0050] The aforementioned optical film mounting equipment 300 is used to automatically attach optical films to the backplate of an electronic whiteboard. This equipment mainly includes a first equipment frame 301, a picking robot 302, a dispensing robot 303, a transfer table 304, a film stacking table 305, and a backplate positioning frame 306. The film stacking table 305 is used to stack and store multiple layers of films, the backplate positioning frame 306 is used to position the backplate to be mounted, and the transfer table 304 serves as a temporary storage station for the films. The picking robot 302 picks up a single film from the film stacking table 305 and transfers it to the transfer table 304. The dispensing robot 303 then removes the film from the transfer table 304 and accurately mounts it onto the backplate on the backplate positioning frame 306.

[0051] See Figure 4 and Figure 5 The aforementioned material handling robot 302 includes a material handling bracket 3021 capable of XYZ three-axis movement, and several material handling suction cups 3022 mounted below the material handling bracket 3021. The material handling suction cups 3022 are arranged in a rectangular array, and at least one of the four corners of the rectangular array is equipped with a material handling cylinder 3023. The cylinder body of the material handling cylinder 3023 is fixedly connected to the material handling bracket 3021, and its piston rod faces downward and is connected to a connecting plate 3024. The material handling suction cup 3022 is fixed to the connecting plate 3024. Thus, when the material handling suction cup 3022 at the corner position picks up the membrane, the material handling cylinder 3023 can perform a short-stroke reciprocating extension and retraction, causing the corner of the membrane to vibrate. The inertial force is used to shake off the excess membrane that is stuck together, ensuring that only a single membrane is picked up. As a preferred embodiment of the present invention, each of the four corners of the rectangular array is provided with a material-picking suction cup 3022 driven by a material-picking cylinder 3023 to improve the shaking effect and is suitable for larger diaphragms.

[0052] Furthermore, the material handling robot 302 also includes a first lifting bracket 3025, a first Z-axis drive device 3026, a first Y-axis drive device 3027, and a first X-axis drive device 3028. The material handling bracket 3021 is fixedly connected to the lower end of the first lifting bracket 3025; the first Z-axis drive device 3026 is arranged parallel to the first lifting bracket 3025, driving the first lifting bracket 3025 to move along the Z-axis; the first Y-axis drive device 3027 drives the first Z-axis drive device 3026 to move along the Y-axis; the first X-axis drive device 3028 is mounted on the first equipment frame 301 and drives the first Y-axis drive device 3027 to move along the X-axis. Through the cooperation of the above drive devices, the material handling bracket 3021 can complete precise movement in the X, Y, and Z axes. Except for the material handling suction cup 3022 connected to the material handling cylinder 3023, the other material handling suction cups are fixedly connected to the material handling bracket 3021 via first L-shaped brackets 3029.

[0053] See Figure 6The aforementioned unloading robot 303 includes an unloading bracket 3031 capable of XYZ three-axis movement, a plurality of unloading suction cups 3032 mounted below the unloading bracket 3031, a second lifting bracket 3033, a second Z-axis drive device 3034, a third Y-axis drive device 3035, and a second X-axis drive device 3036. The unloading suction cups 3032 are arranged in a rectangular array and are connected to the unloading bracket 3031 via second L-shaped brackets 3037. The unloading bracket 3031 is fixedly connected to the lower end of the second lifting bracket 3033; the second Z-axis drive device 3034 drives the second lifting bracket 3033 to move along the Z-axis; the third Y-axis drive device 3035 drives the second Z-axis drive device 3034 to move along the Y-axis; the second X-axis drive device 3036 is mounted on the first equipment frame 301 and drives the third Y-axis drive device 3035 to move along the X-axis. Therefore, the unloading robot 303 can flexibly pick up the film on the transfer table 304 and transfer it to the back plate on the back plate positioning frame 306 for mounting.

[0054] See Figure 7 The aforementioned membrane stacking platform 305 includes a platform 3051 for stacking membranes and a plurality of positioning posts 3052 adjustablely mounted on the platform 3051. The platform 3051 has positioning guide holes 30511 for sliding engagement of the positioning posts 3052. The positioning posts 3052 can be bolted to the platform 3051, and after being loosened, their spacing can be adjusted along the positioning guide holes 30511 to accommodate the stacking and positioning of membranes of different sizes and specifications, thus improving the versatility of the equipment.

[0055] The aforementioned backplate positioning frame 306 is disposed adjacent to one side of the transfer platform 304, and the film stacking platform 305 is disposed on the other side of the transfer platform 304. The three are arranged in a straight line to facilitate short-distance picking and placing by the robotic arm. The working process of the optical film mounting equipment 300 of the present invention is as follows: First, the picking robotic arm 302 moves to above the film stacking platform 305 under the drive of the X, Y, and Z axis drive device. The picking suction cup 3022 descends to pick up the uppermost film. Then, the picking cylinder 3023 vibrates to separate the adhered films. Next, the picking robotic arm 302 moves the picked-up single film to above the transfer platform 304 and puts it down. Then, the unloading robotic arm 303 moves to above the transfer platform 304, the unloading suction cup 3032 picks up the film, and moves it to the backplate positioning frame 306 to accurately attach the film to the positioned backplate, completing a single mounting cycle. Each axis drive device can adopt conventional linear reciprocating drive structures such as linear motors, lead screw modules, or synchronous belt slides to achieve precise positioning.

[0056] refer to Figures 8 to 14 As shown, the OC assembly apparatus 400 of the present invention is illustrated.

[0057] An OC (Open Cell) is a core display panel without backlighting, composed of cells (including a lower substrate, an upper substrate, and a display medium). In production, cells are typically stored in foam boxes, covered with protective pads to prevent scratches. The OC assembly equipment 400 of this invention is used to automatically assemble cells and modules into OCs, mainly including a second equipment frame 401, a first transfer robot 402, a second transfer robot 403, a first conveying device 404, an empty loading box 405, and an empty unloading box 406. The second equipment frame 401 defines the equipment's footprint and is sequentially divided into processing station a, loading station b, and unloading station c along a straight line. The empty loading box 405 is located at loading station b and is used to carry foam boxes containing cells and protective pads; the empty unloading box 406 is located at unloading station c and is used to collect protective pads and empty foam boxes. The first conveying device 404 is located at processing station a and is used to input modules and output the assembled OCs to the next process. The first transfer robot 402 is responsible for transferring the protective pad and empty foam box from loading station b to unloading station c; the second transfer robot 403 is responsible for transferring Cell 410 from loading station b to processing station a for module assembly.

[0058] See Figure 11 and Figure 12 The aforementioned first transfer manipulator 402 includes a lifting plate 4023 capable of Z-axis movement, a pair of first X-axis slide rods 4024 mounted on both sides of the lifting plate 4023, a pair of first Y-axis slide rods 4025 adjustablely fitted on the first X-axis slide rods 4024, and a first slide block 4026 adjustablely fitted on the first Y-axis slide rods 4025. Each first slide block 4026 is equipped with an electromagnetic multi-way valve 4022 and at least one first transfer suction cup 4021. The electromagnetic multi-way valve 4022 is connected to an air source and has several built-in channels with different flow rates. The air path of the first transfer suction cup 4021 is connected to the electromagnetic multi-way valve 4022. By electronically switching between different channels, the suction force of the first transfer suction cup 4021 can be adjusted in real time to adapt to protective pads of different thicknesses and materials, as well as empty foam boxes. This ensures stable adsorption while preventing excessive suction from penetrating the protective pad and accidentally damaging the Cell 410 below. The position of the first transfer suction cup 4021 can be adjusted by sliding the first slide block 4026 on the first Y-axis slide bar 4025. The first Y-axis slide bar 4025 can also move along the first X-axis slide bar 4024 to adapt to protective pads or foam boxes of different sizes.

[0059] Furthermore, the first transfer manipulator 402 also includes a first sliding plate 4027 slidably fitted on the second equipment frame 401, and a third Z-axis drive device 4028 mounted on the first sliding plate 4027 for driving the lifting plate 4023 to move along the Z-axis. Several guide rods 4029 are connected to the lifting plate 4023, and these guide rods 4029 movably pass through the first sliding plate 4027 to guide the lifting action and prevent deflection. The third Z-axis drive device 4028 can be a cylinder, an electric push rod, or a linear module. The first sliding plate 4027 slides along the second equipment frame 401 in the station arrangement direction, allowing the first transfer suction cup 4021, after adsorption, to reciprocate between the loading station b and the unloading station c.

[0060] See Figure 13 and Figure 14 The aforementioned second transfer manipulator 403 includes a third lifting bracket 4031 capable of Z-axis movement and angle rotation, a pair of second X-axis slide rods 4032 mounted on both sides of the third lifting bracket 4031, several second Y-axis slide rods 4033 adjustablely fitted on the second X-axis slide rods 4032, and second slide blocks 4034 adjustablely fitted on the second Y-axis slide rods 4033. At least one second transfer suction cup 4035 is mounted on each second slide block 4034. By adjusting the position of the second slide block 4034 on the second Y-axis slide rods 4033 and the position of the second Y-axis slide rods 4033 on the second X-axis slide rods 4032, the second transfer suction cups 4035 can be adapted to Cells 410 of different sizes, achieving multi-point uniform adsorption and avoiding cell deformation caused by uneven force.

[0061] Furthermore, the second transfer robot 403 also includes a second sliding plate 4036 slidably fitted on the second equipment frame 401, a fourth lifting bracket 4037 slidably fitted on the second sliding plate 4036 along the Z-axis, a fourth Z-axis drive device 4038 for driving the fourth lifting bracket 4037 to move along the Z-axis, and a tilting cylinder 4039. The third lifting bracket 4031 is pivotally fitted to the lower end of the fourth lifting bracket 4037 and is driven by the tilting cylinder 4039 to tilt at an angle. The fourth Z-axis drive device 4038 can also be a cylinder, an electric push rod, or a linear module. The second sliding plate 4036 slides along the second equipment frame 401, which can drive the second transfer suction cup 4035 to transfer between the loading station b and the processing station a, facilitating manual pre-processing of the Cell such as tearing off the film and inspection, and then accurately placing it on the module to complete the assembly.

[0062] In a preferred embodiment of the present invention, a pair of parallel third X-axis drive devices 407 are mounted on the second equipment frame 401. The first sliding plate 4027 of the first transfer robot 402 and the second sliding plate 4036 of the second transfer robot 403 are both mounted on the third X-axis drive devices 407 and driven by the same power source to move synchronously along the X-axis (i.e., the workstation arrangement direction). This not only reduces the redundant configuration of power components but also facilitates the coordination of the movement rhythm of the two transfer robots, making the connection between the processes of picking up protective pads, picking up cells, and assembly smoother. The third X-axis drive device 407 can be a linear motor, a gear and rack module, or a belt drive module.

[0063] The first conveying device 404 mentioned above preferably adopts a roller conveyor or a belt conveyor. The module is placed on a buffer pad and then placed on the conveying surface to avoid scratches and ensure cleanliness. A transfer bracket 408 is provided below the empty loading box 405 and the empty unloading box 406. The bottom of the transfer bracket 408 is equipped with several casters, which can quickly replace the fully loaded empty box and the recycling box full of protective pads and empty foam boxes, thereby improving material turnover efficiency.

[0064] The working process of the OC assembly equipment 400 of the present invention is as follows: First, a foam box containing Cells (with protective pads on the surface) is placed in the empty loading box 405 of the loading station b. The first transfer robot 402 moves above the loading station b, the lifting plate 4023 descends, and the first transfer suction cup 4021 adjusts the electromagnetic multi-way valve 4022 to a suitable flow rate according to the material of the protective pad. After adsorbing the protective pad, it rises and then moves along the X-axis to the unloading station c, placing the protective pad into the unloading empty box 406. Subsequently, the first transfer robot 402 returns to the loading station b, adsorbs the empty foam box, and transfers it to the unloading station c in the same way. Next, the second transfer robot 403 moves to the loading station b, where the second transfer suction cup 4035 picks up the exposed Cell 410, lifts it, and moves it along the X-axis to the processing station a. The tilting cylinder 4039 tilts the Cell to the desired angle for manual film removal and inspection. The Cell then descends and precisely places it onto the module on the first conveying device 404, completing the OC assembly. Finally, the first conveying device 404 outputs the assembled OC to the next process. All actions are coordinated by a unified control system, achieving fully automated cyclic operation.

[0065] refer to Figures 15 to 20 As shown, the semi-finished product flipping device 500 of the present invention is illustrated.

[0066] The aforementioned semi-finished product flipping equipment 500 is used for the automated flipping of semi-finished electronic whiteboards, and is especially suitable for the 180° flipping of large-size panel semi-finished products such as LCD TVs, LCD screens, and LED screens. The semi-finished product flipping equipment mainly includes a third equipment frame 501, a second conveying device 502, a lifting and flipping device 503, a buffer pad fixing device 504, and a lifting device 505.

[0067] See Figure 15 The third equipment frame 501 serves as the supporting skeleton for the semi-finished product tilting device 500. Its overall structure is either gantry-type or frame-type, possessing sufficient rigidity and strength to support the various functional components. The interior of the third equipment frame 501 forms a space for the lifting and tilting device 503 to move up and down.

[0068] The second conveying device 502 is disposed below the interior of the third equipment frame 501 and is used to convey the buffer pads containing the semi-finished products in a horizontal direction. The second conveying device 502 is preferably a roller conveyor, which consists of several parallel rollers. The rollers are driven to rotate by a motor, thereby moving the buffer pads and semi-finished products on them along the conveying direction. In a preferred embodiment of the invention, the second conveying device 502 has a roller gap reserved at the position where the fixed frame 5041 is raised and lowered. This gap matches the width and thickness of the fixed frame 5041, so that the fixed frame 5041 can pass through the second conveying device 502 without obstruction during raising and lowering.

[0069] See Figures 16 to 18 The lifting and tilting device 503 includes a lifting frame 5031, a rotating frame 5032, and several first clamps 5033. The lifting frame 5031 slides within the third equipment frame 501 along the Z-axis to achieve reciprocating movement in the vertical direction. The lifting frame 5031 is located above the second conveying device 502. The rotating frame 5032 is rotatably fitted within the lifting frame 5031 via a rotating shaft. Specifically, rotating shafts are provided on opposite sides of the rotating frame 5032, and the rotating shafts are mounted on the lifting frame 5031 via bearing seats, allowing the rotating frame 5032 to rotate around a horizontal axis within the lifting frame 5031. The first clamps 5033 are disposed within the rotating frame 5032 and are arranged in two rows. The upper row of first clamps 5033 is located at the upper part of the rotating frame 5032 and is used to clamp the upper buffer pad fixing device 504; the lower row of first clamps 5033 is located at the lower part of the rotating frame 5032 and is used to clamp the lower buffer pad fixing device 504. The first clamp 5033 is preferably a pneumatic clamp or a hydraulic clamp, and its clamping direction is set to the horizontal direction, that is, it clamps and fixes the frame 5041 from both ends.

[0070] Furthermore, an auxiliary clamp 5035 is provided between the two rows of first clamps 5033 of the lifting and flipping device 503. The auxiliary clamp 5035 is telescopically fitted onto the side wall of the rotating frame 5032. Specifically, the auxiliary clamp 5035 can be configured as a pressure block or gripper driven by a telescopic cylinder, and it is positioned at the corresponding position on the edge of the semi-finished product. The auxiliary clamp 5035 is used to assist in clamping or pressing the side of the semi-finished product during the flipping process, so as to further enhance the positioning stability of the semi-finished product during the flipping process and avoid the large-size screen from shaking or shifting due to its own weight or inertia. The number of auxiliary clamps 5035 can be flexibly set according to the specifications of the semi-finished product, and usually at least one is provided on each of the left and right sides of the semi-finished product. In addition, at least one guide block 5036 is provided on the side wall of the rotating frame 5032, and the guide block 5036 is provided with a guide slope. The guide ramp extends outward from bottom to top. During the process of the buffer pad fixing device 504 being pushed into the rotating frame 5032 by the lifting device 505, the guide ramp abuts against the edge of the fixing frame 5041, which plays a role in straightening and correcting, ensuring that the buffer pad fixing device 504 can accurately enter the predetermined clamping position in the rotating frame 5032, so as to facilitate the accurate docking of the first clamp 5033 and the positioning block 5043.

[0071] See Figure 15 Two buffer pad fixing devices 504 are provided, each including a fixing frame 5041 and several second clamps 5042. The fixing frame 5041 is a rectangular frame structure, the size of which is adapted to the inner cavity size of the rotating frame 5032. The second clamps 5042 are installed on the inner side of the fixing frame 5041 for clamping and fixing the buffer pad. As a preferred embodiment of the present invention, three second clamps 5042 are provided on each side of the fixing frame 5041, and are arranged symmetrically from left to right. The second clamps 5042 preferably adopt a combination of hydraulic cylinder driving slider, that is, the piston rod of the hydraulic cylinder is connected to the slider, and the slider moves relative to the fixing frame 5041 under the drive of the hydraulic cylinder, thereby clamping the edge of the buffer pad between the fixing frame 5041 and the slider. This clamping method has a large and uniform clamping force, which can reliably fix the buffer pad in the fixing frame 5041. Positioning blocks 5043 are connected to both sides of the fixed frame 5041. The positioning blocks 5043 protrude outward from the edge of the fixed frame 5041 and are used to cooperate with the first clamp 5033. The first clamp 5033 clamps the positioning blocks 5043 from the horizontal direction, thereby fixing the entire buffer pad fixing device 504.

[0072] Two buffer pad fixing devices 504 each have a buffer pad fixed to them. In the initial state, the buffer pad fixing device 504 located inside the rotating frame 5032 (i.e., the one clamped and fixed by the upper row of first clamps 5033 or the lower row of first clamps 5033) is fixed with a first buffer pad, which serves as a permanent clamping pad inside the equipment. The other buffer pad fixing device 504 located below the second conveying device 502 (i.e., the one located below the roller gap of the second conveying device 502, waiting to be lifted) is used to receive the second buffer pad that flows in with the semi-finished product. During equipment operation, the two buffer pad fixing devices 504 alternately occupy positions below the second conveying device 502 and inside the rotating frame 5032 during the production process. The first and second buffer pads exchange positions as the rotating frame 5032 rotates, thereby realizing the cyclical use of the buffer pads within the rotating frame 5032.

[0073] Please see Figure 20 A lifting device 505 is disposed below the second conveying device 502 and is used to lift the fixing frame 5041 of the buffer pad fixing device 504 located below the second conveying device 502. In a preferred embodiment of the invention, at least two sets of lifting devices 505 are provided and spaced apart along the conveying direction of the second conveying device 502 to ensure stable lifting support for the fixing frame 5041. Each set of lifting devices 505 includes a ground support 5051 and at least one set of lifting components mounted on the ground support 5051. The ground support 5051 is fixed to the ground or equipment base and is used to support the lifting components. The lifting components include a lifting hydraulic cylinder 5052 and a clamping block 5053. The output direction of the lifting hydraulic cylinder 5052 is vertically up and down, and the clamping block 5053 is disposed at the output end of the lifting hydraulic cylinder 5052. The clamping block 5053 has a clamping groove 50531 for the edge of the fixed frame 5041 to be inserted into. The clamping groove 50531 is adapted to the thickness of the frame of the fixed frame 5041. When the lifting device 505 is activated, the lifting hydraulic cylinder 5052 extends upward, and the clamping block 5053 rises accordingly. The edge of the fixed frame 5041 is inserted into the clamping groove 50531, thereby being stably lifted and lifted upward, passing through the roller gap of the second conveying device 502, and finally sent into the rotating frame 5032.

[0074] See Figure 15In a preferred embodiment of the present invention, the semi-finished product flipping device further includes a power mechanism 506, which drives the lifting and flipping device 503 to perform lifting and lowering actions. The power mechanism 506 includes a lifting motor 5061, an output sprocket 5062, and a chain (not shown in the figure). The lifting motor 5061 is fixedly mounted on the third equipment frame 501, and the output sprocket 5062 is drive-connected to the output shaft of the lifting motor 5061. The chain is wound around the output sprocket 5062, and one end of the chain is connected to the lifting frame 5031. Specifically, the chain can be fixedly connected to the lifting frame 5031 via a connecting block or a lifting lug. When the lifting motor 5061 rotates forward or reverse, the output sprocket 5062 drives the chain to move, and the chain pulls the lifting frame 5031 up or down within the third equipment frame 501. Through sprocket and chain transmission, the heavy-duty lifting frame 5031 and all its components (including the rotating frame 5032, the buffer pad fixing device 504, and the semi-finished product) can be smoothly driven up and down. The lifting and tilting device 503 also includes a rotary motor 5034, which is connected to the end of the rotating shaft of the rotating frame 5032. The rotary motor 5034 is fixed on the lifting frame 5031, and its output shaft is connected to the rotating shaft of the rotating frame 5032 through a coupling, reducer, or synchronous belt or other transmission components. When the rotary motor 5034 is activated, it drives the rotating frame 5032 to rotate around its rotating shaft within the lifting frame 5031, thereby achieving a 180° tilt of the semi-finished product.

[0075] The following combination Figures 15 to 20 The working process of the 500 semi-finished product turning equipment is explained in detail below: In the initial state, the buffer pad fixing device 504 (hereinafter referred to as the frame inner mechanism) located inside the rotating frame 5032 fixes and holds the first buffer pad. The frame inner mechanism is clamped and fixed to the upper part of the rotating frame 5032 by the upper row of first clamps 5033. Another buffer pad fixing device 504 (hereinafter referred to as the frame outer mechanism) located below the second conveying device 502 fixes and holds the second buffer pad. The frame outer mechanism is located below the roller gap of the second conveying device 502 and is waiting to be lifted.

[0076] First, the second conveying device 502 conveys the second buffer pad carrying the semi-finished product (large screen panel, etc.) together with the frame outer mechanism to the flipping station. At this time, the frame outer mechanism is located at a predetermined position below the second conveying device 502, and the semi-finished product is located above the second conveying device 502.

[0077] Next, the lifting device 505 is activated, the lifting hydraulic cylinder 5052 extends upward, and the clamping block 5053 lifts the edge of the fixed frame 5041 of the outer frame mechanism, raising it upward. The outer frame mechanism, carrying the second buffer pad and the semi-finished product, moves upward, passes through the roller gap of the second conveying device 502, and enters the rotating frame 5032. During this process, the guide slope of the guide block 5036 abuts against the edge of the fixed frame 5041, guiding and straightening the outer frame mechanism to the accurate position. Subsequently, the lower row of first clamps 5033 clamps the positioning block 5043 of the outer frame mechanism from the horizontal direction, fixing the outer frame mechanism to the lower part of the rotating frame 5032. At this time, the inner frame mechanism (with the first buffer pad) is located above the semi-finished product, and the outer frame mechanism (with the second buffer pad) is located below the semi-finished product.

[0078] Then, the lifting motor 5061 starts, and the output sprocket 5062 drives the chain to pull the lifting frame 5031 to rise vertically to the predetermined tilting height. During the lifting process, the first buffer pad and the second buffer pad keep in contact with the semi-finished product from the upper and lower surfaces, respectively, forming an elastic clamp to ensure that the semi-finished product is stable and does not shake during the lifting process.

[0079] After the lifting position is reached, the rotary motor 5034 starts, driving the rotating frame 5032 to rotate 180° around the axis. During this process, the two buffer pad fixing devices 504 fixed to the upper and lower parts of the rotating frame 5032 rotate together with the rotating frame 5032. The first and second buffer pads always clamp the semi-finished product, allowing the semi-finished product to smoothly complete the 180° rotation. After the rotation is completed, the two buffer pad fixing devices 504 are interchanged in spatial position—the inner frame mechanism (with the first buffer pad) originally located in the upper part moves to the lower part, and the outer frame mechanism (with the second buffer pad) originally located in the lower part moves to the upper part.

[0080] Subsequently, the lifting motor 5061 starts in reverse, and the chain pulls the lifting frame 5031 down vertically to the unloading position. The lower row of first clamps 5033 (which is now holding the original inner frame mechanism) releases, and the lifting frame 5031 continues to descend, causing the semi-finished product and the first buffer pad in contact with it to descend together with the second conveyor 502 to the level of the second conveyor 502. Afterwards, the upper row of first clamps 5033 (which is now holding the original outer frame mechanism with the second buffer pad) remains clamped, keeping the original outer frame mechanism inside the rotating frame 5032.

[0081] Finally, the second conveyor 502 is activated, transporting the flipped semi-finished product along with the first buffer pad to the next station. At this point, the original outer frame mechanism (with the second buffer pad) remains inside the rotating frame 5032, becoming the new inner frame mechanism; while the first buffer pad and inner frame mechanism that flowed out with the semi-finished product are transported downstream, ready to flow back into the equipment as the outer frame mechanism for the next cycle. Thus, a complete work cycle ends, and the equipment enters the preparation state for the next flipping operation.

[0082] In this cycle, the two buffer pad fixing devices 504 alternately participate in the production process as the inner and outer mechanisms of the frame. There is always a buffer pad inside the rotating frame 5032, realizing the automatic recycling of the buffer pad without the need for manual intervention throughout the process.

[0083] For the specific structural details of other equipment not described in detail in this embodiment (such as backplate loading equipment 100, backplate processing equipment 200, backlight module installation equipment 600, electrical installation equipment 700, frame assembly equipment 800, and transfer equipment 900, etc.), those skilled in the art can directly use corresponding equipment with the same or similar functions in the prior art to implement them. This invention will not elaborate on or specifically limit them.

[0084] The above embodiments and figures are not intended to limit the product form and style of the present invention. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims

1. A production line for electronic whiteboards, characterized in that: It includes a cleanroom, and backplate loading equipment, backplate processing equipment, optical film mounting equipment, OC assembly equipment, semi-finished product flipping equipment, backlight module mounting equipment, electrical installation equipment, frame assembly equipment and transfer equipment located in the cleanroom; The backplate feeding equipment supplies the backplate to the production line; The back panel processing equipment includes a cutting device and a surface treatment device arranged sequentially along the conveying direction, which are used for cutting and surface treatment of the back panel, respectively. The optical film mounting equipment attaches the optical film to the back plate; The OC assembly equipment assembles Cells and modules into OCs; The semi-finished product flipping device flips the semi-finished products that have completed OC assembly; The backlight module installation equipment, electrical installation equipment, and frame assembly equipment are arranged sequentially along the conveying direction, and are used to complete the assembly of the backlight module, circuit and its interface, and frame, respectively. The transfer equipment is located at the junction of the cleanroom and the ordinary workshop. It is used to output the semi-finished products after the frame assembly is completed from the cleanroom to the ordinary workshop, and during the output process, the buffer pads carrying the semi-finished products are replaced with buffer pads for the ordinary workshop.

2. The production line for electronic whiteboards according to claim 1, characterized in that: The timing of each processing device is coordinated by a unified control system, and each device has an adjustable structure to adapt to products of different specifications.

3. The production line for electronic whiteboards according to claim 1, characterized in that: The optical film mounting equipment includes a first equipment frame, a picking robot, a dispensing robot, a transfer table, a film stacking table, and a backplate positioning frame. The picking robot picks up a film from the film stacking table and transfers it to the transfer table. The dispensing robot takes the film from the transfer table and attaches it to the backplate on the backplate positioning frame.

4. The production line for electronic whiteboards according to claim 3, characterized in that: The material handling robot includes a material handling bracket capable of XYZ three-axis movement and several material handling suction cups installed below the material handling bracket. The material handling suction cups are arranged in a rectangular array, and at least one of the four corners of the rectangular array is mounted on the material handling bracket by a material handling cylinder. The material handling cylinder can drive the corresponding material handling suction cup to reciprocate and extend to shake off the excess film that is stuck together.

5. The production line for electronic whiteboards according to claim 1, characterized in that: The OC assembly equipment includes a second equipment frame, a first transfer robot, a second transfer robot, a first conveying device, an empty loading box, and an empty unloading box. The second equipment frame is divided into a processing station, a loading station, and an unloading station along a straight line. The first transfer robot transfers the protective pad and empty foam box from the loading station to the unloading station. The second transfer robot transfers the cell from the loading station to the processing station. The first conveying device is located at the processing station and is used to input the module and output the assembled OC.

6. The production line for electronic whiteboards according to claim 5, characterized in that: The first transfer manipulator is equipped with a first transfer suction cup and an electromagnetic multi-way valve. The electromagnetic multi-way valve is connected to an air source and has several channels with different flow rates. The air path of the first transfer suction cup is connected to the electromagnetic multi-way valve. Different channels are switched by electronic control to adjust the suction force of the suction cup and adapt to protective pads of different thicknesses and materials.

7. The production line for electronic whiteboards according to claim 1, characterized in that: The semi-finished product turning device includes a third equipment frame, a second conveying device, a lifting and turning device, a buffer pad fixing device, and a lifting device; the second conveying device is located inside the third equipment frame and is used to convey buffer pads containing semi-finished products; the lifting and turning device is located inside the third equipment frame and can be lifted, turned, and flipped; there are two buffer pad fixing devices, each used to fix one buffer pad, and the two buffer pad fixing devices interchange positions during the turning process of the lifting and turning device; the lifting device is located below the second conveying device and is used to push the buffer pad fixing device located below the second conveying device into the lifting and turning device.

8. The production line for electronic whiteboards according to claim 7, characterized in that: The two buffer pad fixing devices alternately participate in the production process as the inner frame mechanism and the outer frame mechanism. At least one buffer pad is always kept in the lifting and flipping device to realize the automatic recycling of the buffer pad.

9. The production line for electronic whiteboards according to claim 1, characterized in that: The backplate processing equipment, optical film installation equipment, OC assembly equipment, semi-finished product flipping equipment, backlight module installation equipment, electrical installation equipment, and frame assembly equipment are arranged sequentially along the straight conveying direction to form a fully continuous automated production line.

10. The production line for the electronic whiteboard according to claim 1, characterized in that: The backplate loading equipment, backplate processing equipment, optical film installation equipment, OC assembly equipment, semi-finished product flipping equipment, backlight module installation equipment, electrical installation equipment, frame assembly equipment, and transfer equipment are all integrated in the cleanroom, which has a higher cleanliness level than ordinary workshops.

Images