Light guide plate laminating device

Abstract

The present application relates to a kind of light guide plate film coating device, belong to light guide plate processing technical field, comprising: conveying mechanism, and the film coating mechanism, cutting mechanism and blanking station sequentially arranged along the conveying direction of conveying mechanism;Wherein, light guide plate film coating device further include blanking cutting mechanism, blanking cutting mechanism includes blanking component and cutting component and is movably arranged between cutting mechanism and blanking station, blanking component is used to grab light guide plate and is transported to blanking station, cutting component is used to cut the film piece of the part beyond the edge of light guide plate in the process that blanking component transports light guide plate.The light guide plate film coating device of the present application, by combining the two processes of blanking and moving and edge trimming in two steps in traditional production line, is completed by blanking cutting mechanism, so that light guide plate performs edge cutting operation in the process of blanking and moving, eliminates the turnaround waiting time of light guide plate between stations in traditional mode, significantly improves production efficiency.

Description

Technical Field

[0001] This invention belongs to the field of light guide plate processing technology, and specifically relates to a light guide plate coating device. Background Technology

[0002] The light guide plate is made of optical-grade acrylic sheet. Then, using high-tech materials with extremely high reflectivity and no light absorption, light guide points are printed on the bottom surface of the optical-grade acrylic sheet using laser engraving, V-shaped cross grid engraving, and UV screen printing technology. The optical-grade acrylic sheet absorbs the light emitted from the lamp and stays on the surface of the optical-grade acrylic sheet. When the light hits each light guide point, the reflected light will diffuse in all directions, and then the reflection condition will be broken and the light will be emitted from the front of the light guide plate. Through the light guide points of various densities and sizes, the light guide plate can emit light uniformly. Usually, a film is covered on one side of the light guide plate with a coating device to eliminate static electricity of the light guide plate.

[0003] Existing automated laminating equipment typically includes a laminating mechanism, a cutting mechanism, and a unloading mechanism arranged sequentially along the production line. The standard operating procedure is as follows: First, the film is continuously laminated onto sequentially conveyed light guide plates; then, the cutting mechanism cuts the film strip between adjacent light guide plates, separating individual products; finally, an independent unloading mechanism picks up the laminated and separated light guide plates and transfers them to the unloading station. The principle behind this working mode is to segment the continuous laminating, cutting, and handling processes, with each functional module performing its specific function. This process decomposition simplifies the complexity and control logic of individual mechanisms.

[0004] However, the problem with this separate operation mode is that since the material feeding operation and the cutting operation of excess film on the edge of the light guide plate are completed in two separate workstations and processes, this increases the cycle time of the equipment and is not conducive to further improving the overall production efficiency. Summary of the Invention

[0005] To address the issue that the existing laminating machine's feeding operation and the cutting operation of excess film at the edge of the light guide plate are completed in two separate workstations and processes, which increases the machine's cycle time and is not conducive to further improving overall production efficiency, this solution provides a light guide plate laminating device.

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

[0007] This invention provides a light guide plate coating device, comprising: a conveying mechanism, and a coating mechanism, a cutting mechanism, and a blanking station arranged sequentially along the conveying direction of the conveying mechanism; the coating mechanism is used to perform a coating operation on the light guide plate, and the cutting mechanism is used to perform a cutting operation on the film between two adjacent light guide plates; wherein, the light guide plate coating device further includes a blanking and cutting mechanism movably disposed between the cutting mechanism and the blanking station, the blanking and cutting mechanism including a blanking component and a cutting component, the cutting component being connected to the blanking component; the blanking component is used to grasp the light guide plate and convey it to the blanking station, and the cutting component is used to cut the film extending beyond the edge of the light guide plate during the conveying of the light guide plate by the blanking component.

[0008] As a preferred embodiment of the present invention, the unloading assembly includes: a first moving module, a second moving module, a first substrate, and a plurality of first suction cups. The first moving module has a first moving member that moves between the cutting mechanism and the unloading station, and the second moving module is connected to the first moving member. The second moving module has a second moving member that moves in a vertical direction, and the first substrate is connected to the second moving member. The plurality of first suction cups are disposed on the lower side of the first substrate, and the plurality of first suction cups are all connected to a vacuum generating device.

[0009] As a preferred embodiment of the present invention, the cutting assembly includes: a rotary driving device, a second substrate, and a second suction cup. The rotary driving device is connected between the first substrate and the second substrate, and the second suction cup is disposed on the lower side of the second substrate and is connected to the vacuum generating device.

[0010] The first suction cups are evenly arranged around the center of the first substrate, and the rotation drive device is connected to the center position of the first substrate and the center position of the second substrate.

[0011] As a preferred embodiment of the present invention, the first substrate is provided with a plurality of radially extending movable grooves, and the plurality of movable grooves are evenly distributed around the center of the first substrate.

[0012] The cutting assembly also includes multiple cutting heads, which are arranged one-to-one with the multiple movable slots. Each cutting head can move along the corresponding movable slot to adjust its distance from the center of the first substrate.

[0013] As a preferred embodiment of the present invention, the cutting assembly further includes a third moving module and a visual inspection device. The third moving module has a third moving member disposed in the movable groove and movable along the length direction of the movable groove. The cutting head is connected to the third moving member. The visual inspection device is used to acquire the edge contour information of the light guide plate in order to control the movement path of the third moving member in the movable groove.

[0014] As a preferred embodiment of the present invention, the cutting assembly further includes a first elastic element and a trigger reset structure. The first elastic element is disposed in the movable groove and connected to the cutting head. The movable path of the cutting head includes a standby position away from the center of the first substrate and an movable position other than the standby position. When the vacuum generating device provides negative pressure to the first suction cup, the cutting head is in the standby position. When the vacuum generating device stops providing negative pressure to the first suction cup, the cutting head is in the movable position.

[0015] As a preferred embodiment of the present invention, the trigger reset mechanism includes a connecting pipe and a guide rod. The connecting pipe is connected to the vacuum generating device, one end of the guide rod is sealed and inserted into the connecting pipe, and the other end of the guide rod is connected to the cutting head and the first elastic element.

[0016] When the vacuum generating device provides negative pressure to the first suction cup, the guide rod is drawn into the connecting pipe under pressure, causing the cutting head to move to the standby position; when the vacuum generating device stops providing negative pressure to the first suction cup, the first elastic element causes the cutting head to move to the active position.

[0017] As a preferred embodiment of the present invention, the light guide plate coating device further includes a main pipe, a first pipe, a second pipe, and a three-way solenoid valve; one end of the main pipe is connected to the vacuum generating device, and the other end is connected to the first valve port of the three-way solenoid valve; one end of the first pipe is connected to the second valve port of the three-way solenoid valve, and the other end is connected to a plurality of first suction cups; one end of the second pipe is connected to the third valve port of the three-way solenoid valve, and the other end is connected to a plurality of second suction cups;

[0018] The connecting pipe is connected to the first pipe.

[0019] As a preferred embodiment of the present invention, the first substrate or cutting head is provided with a negative pressure dust suction port, which is used to adsorb dust generated during the cutting process.

[0020] As a preferred embodiment of the present invention, the light guide plate is a non-rectangular light guide plate, and the cutting component is configured to cut the film along the contour of the non-rectangular light guide plate.

[0021] The beneficial effects of this invention are as follows:

[0022] This invention provides a light guide plate coating device, which combines the two processes of material unloading and transfer, which are completed in two separate steps at two independent workstations in the traditional production line, with the edge trimming completed by the unloading and cutting mechanism. This allows the light guide plate to perform edge trimming during the unloading and transfer process, eliminating the turnaround time of the light guide plate between workstations in the traditional mode and significantly improving production efficiency. Attached Figure Description

[0023] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the structure of a light guide plate coating device according to the present invention;

[0025] Figure 2 This is a bottom view schematic diagram of the material cutting mechanism of a light guide plate coating device according to the present invention;

[0026] Figure 3 This is a front view schematic diagram of the cutting mechanism of a light guide plate coating device according to the present invention;

[0027] Figure 4 This is a schematic diagram of the vacuum generating device connection structure of a light guide plate coating device according to the present invention;

[0028] Figure label:

[0029] 10. Conveying mechanism; 20. Coating mechanism; 30. Cutting mechanism; 40. Unloading assembly; 41. First moving module; 42. Second moving module; 43. First substrate; 431. Movable slot; 432. Negative pressure suction port; 44. First suction cup; 50. Cutting assembly; 51. Rotary drive device; 52. Second substrate; 53. Second suction cup; 54. Cutting head; 55. First elastic element; 56. Connecting pipe; 57. Guide rod; 60. Unloading station; 70. Vacuum generating equipment; 71. Main pipe; 72. First pipe; 73. Second pipe; 74. Three-way solenoid valve. Detailed Implementation

[0030] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0031] Please see Figures 1 to 4This embodiment provides a light guide plate coating device, including: a conveying mechanism 10, and a coating mechanism 20, a cutting mechanism 30, and a blanking station 60 arranged sequentially along the conveying direction of the conveying mechanism 10; the coating mechanism 20 is used to perform a coating operation on the light guide plate, and the cutting mechanism 30 is used to perform a cutting operation on the film between two adjacent light guide plates; wherein, the light guide plate coating device further includes a blanking and cutting mechanism movably arranged between the cutting mechanism 30 and the blanking station 60, the blanking and cutting mechanism includes a blanking component 40 and a cutting component 50, the cutting component 50 being connected to the blanking component 40; the blanking component 40 is used to grip the light guide plate and convey it to the blanking station 60, and the cutting component 50 is used to cut the film extending beyond the edge of the light guide plate during the conveying process of the light guide plate by the blanking component 40.

[0032] Understandably, existing laminating machines convey the light guide plate to the unloading station 60 after laminating it, and then transfer it from the unloading station 60 to the cutting station. At the cutting station, manual or machine processing is performed to trim off excess film outside the edges of the light guide plate. However, since the unloading operation of the laminating machine and the trimming of excess film from the edges of the light guide plate are completed in two separate stations and processes, this increases the equipment's cycle time and is not conducive to further improving overall production efficiency. Therefore, this embodiment combines the two processes of unloading and transfer (completed in two separate steps at two separate stations) and edge trimming in the traditional production line, which are completed by the unloading and cutting mechanism. This allows the light guide plate to undergo edge trimming during the unloading and transfer process, achieving a deep integration of equipment functions and a reduction in production cycle time.

[0033] Specifically, the light guide plate is conveyed by the conveying mechanism 10 and then sequentially passes through the coating mechanism 20 to complete the film attachment. It is then conveyed to the cutting mechanism 30, where the films connecting adjacent light guide plates are cut to form independent coated light guide plates. Subsequently, the unloading and cutting mechanism moves to the output end of the cutting mechanism 30, and the unloading component 40 picks up the separated coated light guide plates and conveys them to the unloading station 60. Simultaneously with the unloading component 40's conveying process to the unloading station 60, the cutting component 50 connected to the unloading component 40 cuts off any excess film beyond the edges of the light guide plate. When the light guide plate is conveyed and placed at the unloading station 60, the cutting of excess film at its edges is completed. The unloading and cutting mechanism then resets, ready for the next work cycle. In this embodiment, by combining the blanking and fine cutting processes into one, the waiting time for the light guide plate to turn around between workstations in the traditional mode is eliminated, which significantly improves the output per unit time. Furthermore, since the cutting action is completed during the process of the workpiece being gripped and transferred, the physical reference for cutting is always the workpiece itself, which avoids the cumulative error caused by the repeated positioning and clamping of the workpiece at different workstations in the traditional method, and ensures the consistency and reliability of the cutting accuracy.

[0034] Furthermore, the unloading assembly 40 includes: a first moving module 41, a second moving module 42, a first substrate 43, and a plurality of first suction cups 44. The first moving module 41 has a first moving member that moves between the cutting mechanism 30 and the unloading station 60, and the second moving module 42 is connected to the first moving member. The second moving module 42 has a second moving member that moves in a vertical direction, and the first substrate 43 is connected to the second moving member. The plurality of first suction cups 44 are disposed on the lower side of the first substrate 43, and the plurality of first suction cups 44 are all connected to the vacuum generating device 70.

[0035] Understandably, the first moving module 41 drives the entire unloading assembly 40 to move above the output end of the cutting mechanism 30; subsequently, the second moving module 42 drives the first substrate 43 and its first suction cups 44 to descend, so that each first suction cup 44 contacts the upper surface of the light guide plate that has been coated and cut; the vacuum generating device 70 is activated to provide negative pressure to the multiple first suction cups 44, thereby firmly adsorbing the light guide plate below the first substrate 43; the second moving module 42 drives the assembly with the adsorbed workpiece to rise and disengage from the conveying mechanism 10; then, the first moving module 41 drives the assembly to move horizontally, conveying the workpiece to above the unloading station 60; the second moving module 42 drives the assembly to descend again, placing the workpiece at the unloading station 60; the vacuum generating device 70 stops working, the first suction cups 44 release the negative pressure, and release the light guide plate; the unloading assembly 40 rises and moves back to the cutting mechanism 30, ready for the next work cycle.

[0036] Furthermore, the cutting assembly 50 includes: a rotary drive device 51, a second substrate 52, and a second suction cup 53. The rotary drive device 51 is connected between the first substrate 43 and the second substrate 52. The second suction cup 53 is disposed on the lower side of the second substrate 52 and is connected to the vacuum generating device 70. A plurality of first suction cups 44 are evenly arranged around the center of the first substrate 43, and the rotary drive device 51 is connected to the center position of the first substrate 43 and the center position of the second substrate 52.

[0037] Optionally, the suction cup openings of the first suction cup 44 are all located at a first height, and the suction cup openings of the second suction cup 53 are all located at a second height, with the first height being slightly higher than the second height, for example, the first height being 2 cm higher than the second height. The suction cup openings of both the first suction cup 44 and the second suction cup 53 are made of flexible materials, such as rubber or silicone, and the deformation that the second suction cup 53 can undergo in the height direction is greater than the difference between the first and second heights. Therefore, when the cutting mechanism adsorbs the light guide plate, the unloading component 40 descends, and the lower-positioned second suction cup 53 contacts and compresses first, until the higher-positioned first suction cup 44 contacts the light guide plate. At this time, both the first suction cup 44 and the second suction cup 53 can reliably adsorb, providing overall gripping force. When the cutting mechanism needs to perform a cutting operation on the film outside the edge of the light guide plate, the light guide plate naturally sinks under the action of gravity and the adsorption force of the second suction cup 53 and remains in contact with the end face of the second suction cup 53. Due to the height difference, a physical gap is automatically formed between the main body of the light guide plate and the end face of the first suction cup 44 that has been released from adsorption. Thus, when the first substrate 43 and the second substrate 52 rotate relative to each other, friction or interference between the light guide plate and the first suction cup 44 is completely avoided.

[0038] Specifically, the first substrate 43 is provided with a plurality of radially extending movable grooves 431, which are evenly distributed around the center of the first substrate 43; the cutting assembly 50 also includes a plurality of cutting heads 54, which are arranged one-to-one with the plurality of movable grooves 431, and each cutting head 54 can move along the corresponding movable groove 431 to adjust its distance from the center of the first substrate 43.

[0039] It is understood that this embodiment achieves independent and continuous adjustment of the radial distance between each cutting point and the rotation center by setting multiple movable slots 431 radiating outward from the center on the first substrate 43, which serves as the mounting base, and configuring an independent cutting head 54 for each movable slot 431. Before processing light guide plates of different sizes or shapes, the position of each cutting head 54 in its corresponding radial movable slot 431 is adjusted according to the outline dimensions of the target product, thereby setting the radial distance between the cutting edge of all cutting heads 54 and the center of the first substrate 43, so that it matches the edge outline of the light guide plate to be processed. During the operation of the rotation drive device 51, these cutting heads 54 with preset radial positions will move with the first substrate 43, and their cutting edges will move along a preset radius trajectory, thereby cutting the edge of the light guide plate.

[0040] In a first embodiment, the cutting assembly 50 further includes a third moving module and a vision inspection device. The third moving module has a third moving member disposed in the movable slot 431 and movable along the length direction of the movable slot 431; the cutting head 54 is connected to the third moving member; the vision inspection device is used to acquire edge contour information of the light guide plate to control the movement path of the third moving member in the movable slot 431. The vision inspection device may include a CCD industrial camera.

[0041] In this embodiment, the control system of the light guide plate coating device receives the actual edge contour information of the light guide plate obtained by the vision inspection device and generates a control signal to drive each cutting head 54 in the third moving module in the radial moving groove 431 in real time, so that the movement trajectory of the cutting head 54 maintains a preset relative relationship with the edge of the workpiece.

[0042] Specifically, before and after grasping the light guide plate, the vision detection device captures or scans the edge of the light guide plate to quickly obtain its precise contour position information. The control system calculates the radial movement path required for each cutting head 54 in real time based on the acquired contour information, the current position of the cutting head 54, and the preset cutting offset, and generates corresponding control commands. During the cutting motion of the cutting component 50, each third moving module drives its connected cutting head 54 to perform independent radial feed or retraction motion in the movable slot 431 according to the control commands, so that the cutting blade can track the undulation changes of the light guide plate edge in real time and accurately.

[0043] Specifically, the control system uses a vision detection device to identify the actual edge of the light guide plate and, combined with a preset cutting offset, generates an ideal cutting path located outside the workpiece in a rotating coordinate system. The control system decomposes this ideal cutting path into the uniform revolution of the rotary drive device 51 and the independent radial extension / retraction motion of each cutting head 54. Based on the contour curvature, the control system calculates the required radial velocity and acceleration of the cutting head 54 in real time, serving as the feedforward part of the control command. During actual cutting, while the rotary drive device 51 drives the cutting head 54 to revolve, the radial position of each cutting head 54 is monitored in real time and compared with the theoretical position at that rotation angle to generate a dynamic tracking error. In this embodiment, the control system uses a closed-loop control algorithm to superimpose the feedforward command with the real-time correction amount based on the error, driving the cutting head 54 to perform compensating motion within the radial movable groove 431, ensuring that its synthesized motion trajectory always precisely conforms to the preset path, achieving adaptive, high-precision edge trimming for arbitrary shaped edges.

[0044] In the second embodiment, the cutting assembly 50 further includes a first elastic element 55 and a trigger reset structure. The first elastic element 55 is disposed in the movable groove 431 and connected to the cutting head 54. The movable path of the cutting head 54 includes a standby position away from the center of the first substrate 43, and an movable position other than the standby position. When the vacuum generating device 70 provides negative pressure to the first suction cup 44, the cutting head 54 is in the standby position; when the vacuum generating device 70 stops providing negative pressure to the first suction cup 44, the cutting head 54 is in the movable position. The first elastic element 55 can be a linear spring.

[0045] When the unloading assembly 40 needs to grasp the light guide plate, the vacuum generator 70 is activated, providing negative pressure to the first suction cup 44. Simultaneously, it triggers a reset structure that acts on the cutting head 54, overcoming the biasing force of the first elastic element 55 and locking or driving the cutting head 54 to a standby position away from the center, thus preventing interference with the workpiece or equipment during grasping. When preparing to cut the film outside the edge of the light guide plate, the vacuum generator 70 stops supplying pressure to the first suction cup 44, triggering the reset structure to release the constraint on the cutting head 54. Under the biasing force of the first elastic element 55, the cutting head 54 automatically moves inward to a point within its active position range. When the cutting motion begins, the solid edge of the light guide plate abuts against the cutting head 54 and, based on its own contour, physically pushes the cutting head 54 to a dynamically balanced adaptive cutting position in real time, thereby completing the trimming of the burrs. After the cutting and unloading are completed, the vacuum generating device 70 provides negative pressure to the first suction cup 44 again to start the next round of gripping. At the same time, the reset structure is triggered to pull the cutting head 54 back or lock it in the standby position, completing one work cycle.

[0046] Optionally, in this embodiment, the cutting head 54 includes a blade holder and a cutting blade. The blade holder is movably embedded in the movable groove 431 and connected to the first elastic member 55. The cutting blade is rotatably connected to the blade holder, and a second elastic member, which can be a torsion spring, is provided between the cutting blade and the blade holder. In this embodiment, in the natural state of the second elastic member, the blade orientation of the cutting blade is set such that when the rotary drive device 51 drives the cutting assembly 50 to perform cutting motion, the extension direction of the cutting blade is approximately tangent to the instantaneous movement direction of the cutting blade at that point, and they point in the same direction. Thus, forward cutting can concentrate the cutting force more at the blade tip, cleanly cutting the film fibers like a razor, greatly reducing material deformation, wrinkling, or burrs caused by the pushing effect.

[0047] Optionally, the cutting blade can be a folding blade. In the standby position, the cutting blade is folded, and the height after folding is higher than the height of the first suction cup 44 and the second suction cup 53.

[0048] Furthermore, the trigger reset mechanism includes a connecting pipe 56 and a guide rod 57. The connecting pipe 56 is connected to the vacuum generating device 70. One end of the guide rod 57 is sealed and inserted into the connecting pipe 56, and the other end of the guide rod 57 is connected to the cutting head 54 and the first elastic element 55. When the vacuum generating device 70 provides negative pressure to the first suction cup 44, the guide rod 57 is drawn into the connecting pipe 56 under pressure, driving the cutting head 54 to move to the standby position. When the vacuum generating device 70 stops providing negative pressure to the first suction cup 44, the first elastic element 55 drives the cutting head 54 to move to the active position.

[0049] Understandably, when the vacuum generator 70 is activated and provides negative pressure to the first suction cup 44, this negative pressure simultaneously acts on the end face of the sealed guide rod 57 through the connecting pipe 56, causing the guide rod 57 to be drawn into the connecting pipe 56. The linear movement of the guide rod 57 directly drives the cutting head 54 connected to it to overcome the force of the first elastic element 55 and move away from the center of the first substrate 43 until it reaches the standby position. At this time, the cutting head 54 is in a retracted state, making room for gripping the light guide plate. When cutting is required, the vacuum generator 70 stops providing negative pressure to the first suction cup 44, the pressure in the connecting pipe 56 is restored, the pressure difference suction force acting on the guide rod 57 disappears, and the compressed first elastic element 55 releases its stored elastic potential energy, pushing the guide rod 57 out of the connecting pipe 56, thereby driving the cutting head 54 to move towards the center of the first substrate 43, into the active position range, and contact the edge of the light guide plate to perform adaptive cutting.

[0050] Specifically, the light guide plate coating device also includes a main pipe 71, a first pipe 72, a second pipe 73, and a three-way solenoid valve 74; one end of the main pipe 71 is connected to the vacuum generating device 70, and the other end is connected to the first valve port of the three-way solenoid valve 74; one end of the first pipe 72 is connected to the second valve port of the three-way solenoid valve 74, and the other end is connected to multiple first suction cups 44; one end of the second pipe 73 is connected to the third valve port of the three-way solenoid valve 74, and the other end is connected to multiple second suction cups 53; wherein, the connecting pipe 56 is connected to the first pipe 72.

[0051] In this embodiment, when it is necessary to grasp the light guide plate, the control system switches the three-way solenoid valve 74 to a state where its first valve port is connected to the second valve port and the first valve port is connected to the third valve port, that is, the main pipe 71 is connected to the first pipe 72 and the second pipe 73. At this time, the vacuum negative pressure is simultaneously delivered to all the first suction cups 44 and the connecting pipe 56 of the trigger reset structure through the first pipe 72. The first suction cups 44 generate an adsorption force to fix the light guide plate body. At the same time, the negative pressure in the connecting pipe 56 drives the trigger reset structure to act, overcome the force of the first elastic element 55, pull the cutting head 54 back and lock it in a standby position away from the center. At the same time, the vacuum negative pressure is simultaneously delivered to all the second suction cups 53 through the second pipe 73. The second suction cups 53 generate an adsorption force to fix the light guide plate body. When cutting is required, the control system switches the three-way solenoid valve 74, disconnecting its first and second valve ports, i.e., disconnecting the main pipe 71 from the first pipe 72. At this time, the vacuum negative pressure supplies pressure to all the second suction cups 53 through the second pipe 73, causing them to adhere to the light guide plate. Simultaneously, the first pipe 72 is disconnected from the vacuum source, the first suction cup 44 loses its adsorption force, and the main body of the light guide plate is released. At the same time, the negative pressure in the connecting pipe 56 disappears, triggering the reset structure to release the locking of the cutting head 54. Under the action of the first elastic element 55, the cutting head 54 enters the active position range, preparing for or performing adaptive cutting.

[0052] In some embodiments, the first substrate 43 or the cutting head 54 is provided with a negative pressure dust suction port 432, which is used to adsorb dust generated during the cutting process.

[0053] It should be explained that when the cutting assembly 50 begins the cutting operation, the suction device connected to the negative pressure suction port 432 is activated simultaneously. During the cutting process, the fine dust and debris generated by the cutting blade are instantly enveloped by the strong local airflow field formed by the negative pressure suction port 432 near the cutting point. Under negative pressure, the dust is rapidly sucked into the suction port and transported through connected pipes to a distant filter or dust collection box for immediate removal and centralized collection. After the cutting operation is completed, the suction device can delay shutting off for a short period to ensure that any suspended residual dust is thoroughly removed, providing a clean environment for the next work cycle. Therefore, this embodiment removes dust before it may adhere to the light guide plate or film surface, effectively avoiding optical defects caused by dust contamination and significantly improving product yield.

[0054] In some embodiments, the light guide plate is a non-rectangular light guide plate, and the cutting assembly 50 is configured to cut the film along the contour of the non-rectangular light guide plate. It is understood that the cutting assembly 50 of this embodiment can act on non-rectangular light guide plates such as circular, elliptical, or irregular polygonal shapes. During the conveying of the light guide plate by the unloading assembly 40, it drives the cutting head 54 to perform a complex, non-linear motion trajectory that matches the outer contour of the light guide plate, thereby precisely cutting the rectangular film covering it into a finished product consistent with the shape of the light guide plate and efficiently removing all excess flash.

[0055] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A light guide plate coating device, characterized in that, include: A conveying mechanism, and a coating mechanism, a cutting mechanism, and a blanking station arranged sequentially along the conveying direction of the conveying mechanism; the coating mechanism is used to perform a coating operation on the light guide plate, and the cutting mechanism is used to perform a cutting operation on the film between two adjacent light guide plates; The light guide plate coating device further includes a cutting and unloading mechanism movably disposed between the cutting mechanism and the unloading station. The cutting and unloading mechanism includes a cutting component and a cutting component, and the cutting component is connected to the cutting component. The cutting component is used to pick up the light guide plate and transport it to the unloading station. The cutting component is used to cut the film extending beyond the edge of the light guide plate during the process of the cutting component transporting the light guide plate. The unloading assembly includes: a first moving module, a second moving module, a first substrate, and a plurality of first suction cups. The first moving module has a first moving member that moves between the cutting mechanism and the unloading station. The second moving module is connected to the first moving member. The second moving module has a second moving member that moves in a vertical direction. The first substrate is connected to the second moving member. The plurality of first suction cups are disposed on the lower side of the first substrate, and the plurality of first suction cups are all connected to a vacuum generating device. The cutting assembly includes: a rotary drive device, a second substrate, and a second suction cup. The rotary drive device is connected between the first substrate and the second substrate. The second suction cup is disposed on the lower side of the second substrate and is connected to the vacuum generating device. A plurality of the first suction cups are evenly arranged around the center of the first substrate, and the rotary drive device is connected to the center position of the first substrate and the center position of the second substrate. The first substrate is provided with a plurality of radially extending movable slots, which are evenly distributed around the center of the first substrate; the cutting assembly further includes a plurality of cutting heads, which are arranged one-to-one with the plurality of movable slots, and each cutting head can move along the corresponding movable slot to adjust its distance from the center of the first substrate. The cutting assembly further includes a first elastic element and a trigger reset structure. The first elastic element is disposed in the movable slot and connected to the cutting head. The movable path of the cutting head includes a standby position away from the center of the first substrate and an movable position other than the standby position. When the vacuum generating device provides negative pressure to the first suction cup, the cutting head is in the standby position. When the vacuum generating device stops providing negative pressure to the first suction cup, the cutting head is in the movable position.

2. The light guide plate coating device according to claim 1, characterized in that, The trigger reset mechanism includes a connecting pipe and a guide rod. The connecting pipe is connected to the vacuum generating device. One end of the guide rod is sealed and inserted into the connecting pipe, and the other end of the guide rod is connected to the cutting head and the first elastic element. When the vacuum generating device provides negative pressure to the first suction cup, the guide rod is drawn into the connecting pipe under pressure, causing the cutting head to move to the standby position; when the vacuum generating device stops providing negative pressure to the first suction cup, the first elastic element causes the cutting head to move to the active position.

3. The light guide plate coating device according to claim 2, characterized in that, The light guide plate coating device further includes a main pipe, a first pipe, a second pipe, and a three-way solenoid valve; one end of the main pipe is connected to the vacuum generating device, and the other end is connected to the first valve port of the three-way solenoid valve; one end of the first pipe is connected to the second valve port of the three-way solenoid valve, and the other end is connected to a plurality of first suction cups; one end of the second pipe is connected to the third valve port of the three-way solenoid valve, and the other end is connected to a plurality of second suction cups; The connecting pipe is connected to the first pipe.

4. The light guide plate coating device according to claim 1, characterized in that, The first substrate or cutting head is provided with a negative pressure dust suction port, which is used to absorb dust generated during the cutting process.

5. The light guide plate coating device according to claim 1, characterized in that, The light guide plate is a non-rectangular light guide plate, and the cutting component is configured to cut the film along the contour of the non-rectangular light guide plate.

Images