Liquid crystal display screen and touch screen achromatic fusion auxiliary tool and process

Abstract

The application belongs to the technical field of liquid crystal display production, and particularly relates to a liquid crystal display and touch screen achromatism fusion auxiliary tool and process. The tool and process are aimed at the problem that dust carried by workers is easily attached to the liquid crystal display and touch screen, the manual bonding efficiency is low, and there is obvious chromatic aberration between the cover plate of the touch screen and the display area of the liquid crystal display after bonding. The tool and process include a workbench, the top of the workbench is rotationally connected with a first rotation column and a second rotation column, and a cross placement plate is fixedly arranged on the outer wall of the first rotation column. In the application, the bonding operation of the semi-finished product and the touch screen can be automatically completed, the bonding efficiency is improved, dust carried by workers is prevented from being easily attached to the liquid crystal display, and the final color coordinates of the touch screen cover plate and the color coordinates of the semi-finished product are basically consistent.

Description

Technical Field

[0001] This invention relates to the field of liquid crystal display manufacturing technology, and in particular to an auxiliary tooling and process for seamless color fusion of a liquid crystal display and a touch screen. Background Technology

[0002] There are two ways to bond industrial LCD displays and touch screens: full lamination and frame lamination. Full lamination is a vacuum bonding process using transparent OCA or OCR, while frame lamination is a non-vacuum bonding process using U-shaped double-sided tape or foam adhesive.

[0003] The above technical solution still has some shortcomings in its use:

[0004] 1. When bonding LCD screens and touch screens, it is mostly done manually. During the manual bonding process, dust carried by the workers can easily adhere to the LCD screen and touch screen, causing air bubbles or gaps to appear during the later bonding process. In addition, manual bonding is inefficient.

[0005] 2. Currently used LCD screens are mostly black with a grayish tint. Combined with transparent bonding materials or air gaps, this results in a noticeable color difference between the touchscreen cover and the LCD screen display area after the LCD screen and touchscreen are bonded together.

[0006] To address the aforementioned issues, this invention proposes an auxiliary tooling and process for seamless color fusion of a liquid crystal display screen and a touch screen. Summary of the Invention

[0007] The purpose of this invention is to solve the problems of existing methods where dust carried by workers easily adheres to the LCD screen and touch screen, resulting in low efficiency of manual bonding and obvious color difference between the touch screen cover and the LCD screen display area after bonding. The invention proposes an auxiliary tooling and process for color difference-free fusion of LCD screen and touch screen.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A color-difference-free fusion auxiliary tooling for liquid crystal displays and touch screens includes a worktable. The top of the worktable is rotatably connected to a first rotating column and a second rotating column. A cross-shaped placement plate is fixedly sleeved on the outer wall of the first rotating column. The top of the cross-shaped placement plate has four placement slots for placing semi-finished products. A bonding plate is fixedly sleeved on the outer wall of the second rotating column and is located above the cross-shaped placement plate. The bonding plate has two bonding slots, and each of the two bonding slots has a frame for placing the touch screen.

[0010] It also includes four push plates that are slidably set on the top of the bonding plate. The four push plates are in pairs, and multiple trapezoidal blocks are fixed on the side of the two push plates in the same group that are close to each other. The trapezoidal blocks are used to support the touch screen inside the frame.

[0011] It also includes two U-shaped frames, both of which are slidably mounted on the top of the bonding plate. Two first trapezoidal push blocks are fixed on the side of the two U-shaped frames that are close to each other. The first trapezoidal push blocks can release the support of the trapezoidal blocks on the touch screen.

[0012] The coating structure, located inside the U-shaped frame, is used to evenly coat the ink onto the touch screen.

[0013] Two bonding structures are set in two frames respectively, used to bond the ink-coated touch screen to the semi-finished product;

[0014] The discharge structure is located on one side of the top of the workbench and is used to eject the finished product from the placement trough.

[0015] In one possible design, the coating structure includes a coating roller rotating within a U-shaped frame, with its bottom contacting the top of the touchscreen. The U-shaped frame has a rotating groove, within which a rotating roller is rotatably connected. The top of the coating roller extends into the rotating groove and contacts the rotating roller, coating the outer wall of the rotating roller with ink. The U-shaped frame also includes a storage compartment for holding ink. A dispensing nozzle is fixed to the bottom inner wall of the storage compartment, with its bottom extending into the rotating groove and contacting the top of the rotating roller, again coating the outer wall of the rotating roller with ink. A guide rod slides through the U-shaped frame and is fixed to the touchscreen via a base. At the top of the laminated board, a lead screw is threaded through the internal thread of the U-shaped frame, and the lead screw is rotatably mounted on the top of the laminated board via a base. A drive motor is fixed to the top of the laminated board, and the output shaft of the drive motor is fixedly connected to one end of the lead screw via a coupling. The drive motor drives the lead screw to rotate, and the lead screw drives the U-shaped frame to move. The coating roller abuts against the top of the touch screen, and the coating roller rotates under the action of the touch screen. The coating roller abuts against the rotating roller and drives the rotating roller to rotate. Under the action of the injection nozzle, the adjusted ink in the storage chamber is coated onto the surface of the rotating roller. The rotating roller coats the ink onto the coating roller. Therefore, when the U-shaped frame moves, the coating roller can evenly coat the ink onto the touch screen.

[0016] In one possible design, the bonding structure includes four rotating rods, each rotatably mounted on one of the four inner walls of the bonding groove. Each of the four rotating rods has a pin on its side closest to the frame. The four side walls of the frame are provided with sliding grooves that engage with adjacent pins to control the lifting and lowering of the frame. The inner wall of the frame has a rectangular groove, and multiple vacuum suction cups are fixed to the inner wall of the rectangular groove for adsorbing and fixing the touchscreen. A motor drives the rotating rods to rotate, and the rotating rods, through the engagement of the sliding grooves and pins, move the frame and touchscreen downwards, thus bonding the touchscreen to the top of the semi-finished product.

[0017] In one possible design, the bonding structure further includes two rectangular grooves disposed within the bonding plate, with the two rectangular grooves located on opposite sides of the bonding groove. A lifting plate is slidably connected within each of the two rectangular grooves. Two connecting rods are rotatably connected to the top of each of the two lifting plates. The top ends of the two connecting rods are rotatably connected to the bottom of two push plates in the same group. The lifting of the lifting plates controls the movement of the two push plates. Multiple first springs are fixed to the top of the lifting plates, and the tops of the multiple first springs are fixedly connected to the inner top wall of the rectangular groove. A fixing plate is fixed to the top of the lifting plates. The top of the fixed plate slides and extends above the bonding plate. A second trapezoidal push block is fixed on one side of the fixed plate, and the second trapezoidal push block cooperates with the first trapezoidal push block. The first trapezoidal push block is used to drive the lifting plate to rise. The lead screw rotates in the opposite direction, and the U-shaped frame moves back to its original position. After the U-shaped frame moves to a certain distance, the first trapezoidal push block and the second trapezoidal push block cooperate to drive the lifting plate to move upward. The first spring is in a compressed state. The lifting plate can drive the push plate and the trapezoidal block to move away from the touch screen through the connecting rod. The trapezoidal block releases its support for the touch screen, which facilitates the subsequent lowering of the frame to complete the bonding operation.

[0018] In one possible design, the discharge structure includes a fixed column fixed to one side of the top of the workbench. A top column is slidably fitted onto the outer wall of the fixed column. A second spring is fixed to the inner wall of the top of the top column, and the bottom end of the second spring is fixedly connected to the top end of the fixed column. The cross-shaped placement plate has four through holes, which are located in corresponding placement slots. The top of the top column has an inclined surface. With the cooperation of the second spring and the inclined surface, the top column can penetrate through the through holes and extend into the placement slots. The cross-shaped placement plate moves the laminated semi-finished product and the touch screen into the vacuum laminating machine to further complete the lamination operation. Then, the cross-shaped placement plate rotates 90° again, and the top column, under the action of the second spring and the inclined surface, penetrates through the through holes and extends into the placement slots. The top column can push out the finished product in the placement slots, making it easy for the operator to remove. The operation is extremely convenient.

[0019] In one possible design, the outer walls of the first rotating column and the second rotating column are respectively fixedly fitted with a first synchronous wheel and a second synchronous wheel. The first synchronous wheel and the second synchronous wheel are connected by a synchronous belt drive. The diameter of the first synchronous wheel is larger than the diameter of the second synchronous wheel. The first rotating column and the first synchronous wheel rotate 90° to drive the second rotating column and the bonding plate to rotate 180°, so as to align the cross placement plate with the frame position, which facilitates the bonding of the semi-finished product with the touch screen.

[0020] In one possible design, the thickness of the touchscreen is greater than the thickness of the frame, which facilitates ink coating and bonding operations on the touchscreen.

[0021] In one possible design, a vacuum laminator is fixed to the top of the workbench for bonding the pre-bonded semi-finished product to the touch screen in one step.

[0022] In one possible design, a hollow rotating shaft is rotatably connected within the U-shaped frame. A rotating wheel is fixedly fitted onto the outer wall of the hollow rotating shaft, and an air bladder is fixedly fitted onto the outer wall of the rotating wheel. A vent pipe is fixed inside the rotating wheel, with both ends extending into the air bladder and the hollow rotating shaft, respectively, for injecting gas from the hollow rotating shaft into the air bladder. The outer wall of the air bladder is provided with cleaning cotton for cleaning ink on the coating roller. One end of the hollow rotating shaft rotatably passes through the U-shaped frame and extends to one side of the U-shaped frame, and one end of the rotating roller rotatably passes through the U-shaped frame and extends to one side of the U-shaped frame. The rotating roller and the hollow rotating shaft are driven by two meshing gears. The other end of the hollow rotating shaft rotatably passes through an air injection pipe, one end of which is fixedly fitted through the U-shaped frame. The air injection pipe is connected to an external air source via a flexible hose. The U-shaped frame is connected to a rotating motor fixed on one side via a housing, and the output shaft of the rotating motor is fixedly connected to the other end of the rotating roller via a coupling. When the ink color in the storage chamber is not suitable, the ink is discharged, and then an external air source injects gas into the hollow rotating shaft through an air injection pipe. The gas is injected into the air bladder through a vent pipe, causing the air bladder to inflate. At this time, the cleaning cotton on the outer wall of the air bladder contacts the outer wall of the coating roller. The rotating roller is driven to rotate by the motor, which in turn drives the coating roller to rotate. The rotating roller drives the hollow rotating shaft to rotate through gear meshing. At this time, the hollow rotating shaft and the coating roller rotate in the same direction. The cleaning cotton on the outer wall of the air bladder can remove the ink on the coating roller. Then, cleaning liquid is injected into the storage chamber to further clean the storage chamber, rotating roller, and coating roller, making it easier for the coating roller to perform the corresponding color ink coating operation again later.

[0023] This application discloses a color-difference-free fusion process between a liquid crystal display screen and a touch screen, comprising the following steps:

[0024] S1. Pre-treatment and ink mixing: First, the translucent material is bonded to the LCD screen to form a semi-finished product, and its color coordinates are measured using a colorimeter; then, the ink color is precisely mixed according to the color coordinates to ensure that the color coordinates of the ink after printing are consistent with the semi-finished product, and the mixed ink is injected into the storage tank.

[0025] S2. Positioning of semi-finished products and touch screen: Place the semi-finished product in the placement slot and rotate it to the designated bonding slot through the synchronous transmission system; at the same time, place the touch screen in the frame, fix it with a vacuum suction cup, and prepare to apply ink.

[0026] S3, Ink Coating: The lead screw and U-shaped frame work together to drive the coating roller to contact the touch screen. The ink in the storage tank is evenly coated onto the surface of the coating roller by rotating the roller and the injection nozzle. As the coating roller moves, it ensures that the ink evenly covers the touch screen.

[0027] S4. Touchscreen bonding: After coating is completed, the trapezoidal block is released from its fixed support of the touchscreen. The touchscreen is then moved down to the top of the semi-finished product by a motor to achieve precise bonding.

[0028] S5. Finished Product Output: After lamination is completed, the finished product is sent to a vacuum laminator for final processing; then, the finished product is automatically ejected by the top column for easy handling.

[0029] S6. Maintenance and Cleaning: If the ink color is not right, drain the old ink, inject cleaning gas into the expansion chamber, use cleaning cotton to remove residual ink from the coating roller, and inject cleaning fluid for a thorough cleaning to prepare for the next coating operation; perform regular maintenance on the equipment, including cleaning the coating roller, rotating roller and storage chamber, to ensure coating accuracy and equipment performance.

[0030] Beneficial effects:

[0031] In this invention, four rotating rods are respectively rotatably mounted on the four inner walls of the bonding groove. Each of the four rotating rods has a pin on the side near the frame. Each of the four side walls of the frame is provided with a sliding groove, which cooperates with the adjacent pin to control the lifting and lowering of the frame. The inner wall of the frame is provided with a rectangular groove, and multiple vacuum suction cups are fixed on the inner wall of the rectangular groove. The motor drives the rotating rods to rotate, and the rotating rods move the frame and the touch screen downward through the cooperation of the sliding groove and the pin, which can attach the touch screen to the top of the semi-finished product, automatically completing the bonding operation without manual operation, greatly improving the bonding efficiency, and avoiding the dust carried by the workers from easily adhering to the LCD screen.

[0032] In this invention, a coating roller rotates inside the U-shaped frame, and a rotating roller is rotatably connected inside the rotating groove. A liquid injection nozzle is fixed to the bottom inner wall of the storage compartment, and the bottom of the nozzle extends into the rotating groove and contacts the top of the rotating roller. A lead screw drives the U-shaped frame to move, and the coating roller rotates under the action of the touchscreen. The coating roller contacts the rotating roller and drives it to rotate, and the rotating roller coats the ink onto the coating roller. Therefore, when the U-shaped frame moves, the coating roller can evenly coat the ink onto the touchscreen, ensuring that the final color coordinates after the touchscreen cover plate are basically consistent with the color coordinates of the semi-finished product, resulting in a seamless color transition between the LCD screen and the touchscreen.

[0033] In this invention, the bonding plate has two rectangular slots, and a lifting plate is slidably connected to each of the two rectangular slots. Two connecting rods are rotatably connected to the tops of the two lifting plates, and the tops of the two connecting rods are rotatably connected to the bottoms of two corresponding push plates. A second trapezoidal push block is fixed to the top of the lifting plate via a fixing plate, and the second trapezoidal push block cooperates with the first trapezoidal push block. The trapezoidal block supports the touchscreen, facilitating the subsequent application of ink to the touchscreen. Conversely, the first and second trapezoidal push blocks cooperate to drive the lifting plate upwards. The lifting plate, through the connecting rods, can move the push plates and trapezoidal blocks away from the touchscreen, allowing the frame to move the touchscreen downwards to complete the bonding operation.

[0034] In this invention, the bonding operation between the semi-finished product and the touch screen can be completed automatically, which not only improves the bonding efficiency, but also avoids dust carried by the workers from easily adhering to the liquid crystal display screen. In addition, the touch screen is coated with ink of the corresponding color so that the final color coordinates of the touch screen after the cover plate is basically consistent with the color coordinates of the semi-finished product, so that the liquid crystal display screen and the touch screen have no color difference boundary and are perfectly integrated. Attached Figure Description

[0035] Figure 1 This is a three-dimensional structural schematic diagram of an auxiliary tooling for seamless color fusion of a liquid crystal display screen and a touch screen provided in Embodiment 1 of the present invention;

[0036] Figure 2 This is a three-dimensional exploded view of an auxiliary tooling for seamless color fusion of a liquid crystal display screen and a touch screen, provided in Embodiment 1 of the present invention.

[0037] Figure 3 This is a three-dimensional structural diagram of the second rotating column and the bonding plate of an auxiliary tooling for color difference-free fusion of a liquid crystal display screen and a touch screen provided in Embodiment 1 of the present invention.

[0038] Figure 4 This is a three-dimensional structural diagram of the push plate, trapezoidal block and frame of an auxiliary tooling for color difference fusion of a liquid crystal display screen and a touch screen provided in Embodiment 1 of the present invention.

[0039] Figure 5 This is a schematic diagram of the main cross-sectional structure of the frame of an auxiliary tooling for seamless color fusion of a liquid crystal display screen and a touch screen provided in Embodiment 1 of the present invention.

[0040] Figure 6 This is a partial three-dimensional cross-sectional view of the bonding plate of an auxiliary tooling for color-difference-free fusion of a liquid crystal display screen and a touch screen provided in Embodiment 1 of the present invention.

[0041] Figure 7 This is a three-dimensional structural diagram of a U-shaped frame for a color-difference-free fusion auxiliary tooling for a liquid crystal display screen and a touch screen, provided in Embodiment 1 of the present invention.

[0042] Figure 8 This is a schematic diagram of the front cross-sectional structure of a U-shaped frame for a color-difference-free fusion auxiliary tooling for a liquid crystal display screen and a touch screen provided in Embodiment 1 of the present invention;

[0043] Figure 9 This is a partial three-dimensional cross-sectional view of the cross-shaped placement plate and top column of an auxiliary tooling for color difference-free fusion of a liquid crystal display screen and a touch screen provided in Embodiment 1 of the present invention.

[0044] Figure 10 This is a schematic diagram of the front cross-sectional structure of a U-shaped frame for a color-difference-free fusion auxiliary tooling for a liquid crystal display screen and a touch screen provided in Embodiment 2 of the present invention;

[0045] Figure 11 This is a schematic diagram of the main cross-sectional structure of the rotating wheel of an auxiliary tooling for seamless color fusion of a liquid crystal display screen and a touch screen provided in Embodiment 2 of the present invention;

[0046] Figure 12 This is a side cross-sectional view of a U-shaped frame for a color-difference-free fusion auxiliary tooling for a liquid crystal display screen and a touch screen, as provided in Embodiment 2 of the present invention.

[0047] In the diagram: 1. Workbench; 2. First rotating column; 3. Second rotating column; 4. First synchronous pulley; 5. Second synchronous pulley; 6. Synchronous belt; 7. Cross placement plate; 8. Placement groove; 9. Bonding plate; 10. Bonding groove; 11. Frame; 12. Touch screen; 13. Rotating rod; 14. Slide groove; 15. Pin; 16. Rectangular groove; 17. Vacuum suction cup; 18. Push plate; 19. Trapezoidal block; 20. U-shaped frame; 21. Guide rod; 22. Lead screw; 23. Drive motor; 24. 25. Rotating groove; 26. Coating roller; 27. Rotating roller; 28. Injection nozzle; 29. ​​Storage chamber; 20. First trapezoidal push block; 30. Rectangular groove; 31. Lifting plate; 32. Connecting rod; 33. First spring; 34. Fixing plate; 35. Second trapezoidal push block; 36. Vacuum bonding machine; 37. Top column; 38. Fixing column; 39. Second spring; 40. Inclined surface; 41. Through hole; 42. Hollow rotating shaft; 43. Rotating wheel; 44. Vent pipe; 45. Airbag; 46. Injection pipe. Detailed Implementation

[0048] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0049] Example 1

[0050] Reference Figure 1 , Figure 2 and Figure 6 A distillation column, used in the production of liquid crystal displays, mainly comprises a workbench 1, with two key components rotatably connected to its top: a first rotating column 2 and a second rotating column 3. A cross-shaped placement plate 7 is fixedly fitted onto the outer wall of the first rotating column 2. The top of the cross-shaped placement plate 7 has four placement slots 8, specifically for placing semi-finished products. A bonding plate 9 is fixedly fitted onto the outer wall of the second rotating column 3, and the bonding plate 9 is located above the cross-shaped placement plate 7. The bonding plate 9 has two bonding slots 10, each containing a frame 11 for placing a touchscreen 12.

[0051] Reference Figures 3-6 To ensure stable placement of the touchscreen 12, four push plates 18 are also provided on the fixture. These are slidably mounted on the top of the bonding plate 9 and are arranged in pairs. On the side of each pair of push plates 18 that are close to each other, multiple trapezoidal blocks 19 are fixed. These trapezoidal blocks 19 are used to support the touchscreen 12 inside the frame 11.

[0052] Reference Figure 3 , Figure 6 and Figure 7In addition, the fixture also has two U-shaped frames 20, which are slidably mounted on the top of the bonding plate 9. Two first trapezoidal push blocks 29 are fixed on the side of the two U-shaped frames 20 that are close to each other. These first trapezoidal push blocks 29 can release the trapezoidal blocks 19 from supporting the touch screen 12 for subsequent operation.

[0053] Reference Figure 3 , Figure 7 and Figure 8 The coating structure, a key component of the tooling, is housed within the U-shaped frame 20 and is used to uniformly coat ink onto the touchscreen 12. Specifically, the coating structure includes a coating roller 25 rotating within the U-shaped frame 20, with its bottom contacting the top of the touchscreen 12. The U-shaped frame 20 also includes a rotating groove 24, within which a rotating roller 26 is rotatably connected. The top of the coating roller 25 extends into the rotating groove 24 and contacts the rotating roller 26, thus coating the outer wall of the rotating roller 26 onto the outer wall of the coating roller 25. Simultaneously, the U-shaped frame 20 also includes a storage chamber 28 for holding ink. A dispensing nozzle 27 is fixed to the bottom inner wall of the storage chamber 28, with its bottom extending into the rotating groove 24 and contacting the top of the rotating roller 26, also for coating the outer wall of the rotating roller 26. Driven by the drive motor 23, the lead screw 22 rotates, moving the U-shaped frame 20, thereby causing the coating roller 25 to uniformly coat the ink onto the touchscreen 12.

[0054] Reference Figures 3-5 The fixture also includes two bonding structures, each housed within a frame 11, for bonding the ink-coated touchscreen 12 to the semi-finished product. Each bonding structure comprises four rotating rods 13, rotatably mounted on the four inner walls of the bonding groove 10. Each of the four rotating rods 13 has a pin 15 rotatably mounted on the side closest to the frame 11, while each of the four side walls of the frame 11 has a sliding groove 14. The sliding groove 14 engages with the adjacent pin 15 to control the lifting and lowering of the frame 11. The inner wall of the frame 11 also has a rectangular groove 16, with multiple vacuum suction cups 17 fixed to its inner wall for adsorbing and fixing the touchscreen 12. Driven by a motor, the rotating rods 13, through the engagement of the sliding grooves 14 and the pins 15, move the frame 11 and the touchscreen 12 downwards, achieving bonding between the touchscreen 12 and the semi-finished product.

[0055] Reference Figure 3 , Figure 6 and Figure 7In addition to the components described above, the bonding structure also includes two rectangular slots 30 disposed within the bonding plate 9. These two rectangular slots 30 are located on either side of the bonding groove 10, and a lifting plate 31 is slidably connected within each rectangular slot 30. Two connecting rods 32 are rotatably connected to the top of each lifting plate 31, and the top ends of these two connecting rods 32 are rotatably connected to the bottoms of two push plates 18 in the same group. Thus, the lifting movement of the lifting plate 31 controls the movement of the two push plates 18.

[0056] Reference Figure 3 , Figure 6 and Figure 7 Multiple first springs 33 are fixed to the top of the lifting plate 31, and the tops of these first springs 33 are fixedly connected to the top inner wall of the rectangular groove 30. In addition, a fixing plate 34 is also fixed to the top of the lifting plate 31, and the top of this fixing plate 34 slides over the bonding plate 9. A second trapezoidal push block 35 is fixed to one side of the fixing plate 34, and this second trapezoidal push block 35 cooperates with a first trapezoidal push block 29 on the U-shaped frame 20.

[0057] Reference Figures 3-7 When the lead screw 22 rotates in the reverse direction, the U-shaped frame 20 will return to its original position and move. After the U-shaped frame 20 moves a certain distance, the first trapezoidal push block 29 will cooperate with the second trapezoidal push block 35, thereby driving the lifting plate 31 to rise. During this process, the first spring 33 will be compressed. The upward movement of the lifting plate 31 will drive the push plate 18 and the trapezoidal block 19 to move away from the touch screen 12 through the connecting rod 32, thereby releasing the support of the trapezoidal block 19 on the touch screen 12. In this way, the frame 11 can then drive the touch screen 12 to move downward to complete the bonding operation.

[0058] Reference Figure 2 and Figure 9 In addition, the tooling is equipped with a discharge structure, which is located on the top side of the workbench 1 to eject the finished products in the placement slot 8 for subsequent processing.

[0059] Reference Figure 2 and Figure 9 The discharge structure includes a fixed column 38 fixed to one side of the top of the workbench 1. A top column 37 is slidably fitted onto the outer wall of the fixed column 38. A second spring 39 is fixed to the inner wall of the top of the top column 37, and the bottom end of the second spring 39 is fixedly connected to the top end of the fixed column 38. Four through holes 41 are provided in the cross-shaped placement plate 7, and these four through holes 41 are located in the corresponding placement grooves 8. The top of the top column 37 is provided with an inclined surface 40.

[0060] Reference Figure 1 , Figure 2 and Figure 9After the cross-shaped placement plate 7 moves the bonded semi-finished product and touch screen 12 into the vacuum laminating machine 36 for further bonding, the cross-shaped placement plate 7 will rotate 90° again. During this process, the top post 37, under the action of the second spring 39 and the inclined plane 40, will penetrate through the through hole 41 and extend into the placement groove 8. In this way, the top post 37 can push the finished product out of the placement groove 8, making it easy for the operator to remove. This operation is extremely convenient.

[0061] Reference Figure 2 A first synchronous wheel 4 is fixedly fitted onto the outer wall of the first rotating column 2, while a second synchronous wheel 5 is fixedly fitted onto the outer wall of the second rotating column 3. These two synchronous wheels are connected by a synchronous belt 6. It is worth noting that the diameter of the first synchronous wheel 4 is larger than the diameter of the second synchronous wheel 5. Therefore, when the first rotating column 2 and the first synchronous wheel 4 rotate 90°, they will drive the second rotating column 3 and the bonding plate 9 to rotate 180°. This design is used to align the cross-shaped placement plate 7 with the frame 11, thereby facilitating the bonding of the semi-finished product with the touch screen 12.

[0062] Reference Figure 3 , Figure 5 and Figure 8 Then, the thickness of the touch screen 12 is set to be greater than the thickness of the frame 11. This design is to facilitate ink coating and subsequent bonding operations on the touch screen 12, and to ensure that the touch screen has sufficient stability and operability during the processing.

[0063] Reference Figure 1 Secondly, a vacuum bonding machine 36 is fixedly installed on the top of the workbench 1. The main function of this machine is to further bond the pre-bonded semi-finished product with the touch screen 12 to ensure that the two are tightly bonded and blended without color difference.

[0064] Example 2

[0065] refer to Figures 10-12 An improvement upon Embodiment 1 is made as follows: A hollow rotating shaft 42 is rotatably connected within the U-shaped frame 20, and a rotating wheel 43 is fixedly fitted onto the outer wall of this shaft. An air bladder 45 is fixedly fitted onto the outer wall of the rotating wheel 43, and a venting tube 44 is fixed inside the rotating wheel 43. Both ends of the venting tube 44 extend into the air bladder 45 and the hollow rotating shaft 42, respectively. This design allows gas from the hollow rotating shaft 42 to be injected into the air bladder 45, causing the air bladder to inflate.

[0066] refer to Figures 10-12The outer wall of the air bladder 45 is provided with a layer of cleaning cotton, the main function of which is to clean the ink on the coating roller 25. When the coating roller needs to be cleaned, an external air source injects gas into the hollow rotating shaft 42 through the air injection pipe 46. The gas enters the air bladder 45 through the air vent pipe 44, causing the air bladder to inflate. At this time, the cleaning cotton on the outer wall of the air bladder will come into contact with the outer wall of the coating roller 25.

[0067] refer to Figures 10-12 Meanwhile, one end of the rotating roller 26 rotates through the U-shaped frame 20 and extends to one side, where it is driven by two meshing gears with the hollow rotating shaft 42. Thus, when the rotating motor drives the rotating roller 26 to rotate, the rotating roller 26 drives the coating roller 25 to rotate, and simultaneously drives the hollow rotating shaft 42 to rotate in the same direction as the coating roller 25 through gear meshing. At this time, the cleaning cotton on the outer wall of the airbag 45 can clean the ink off the coating roller 25.

[0068] refer to Figures 10-12 During the cleaning process, if the ink color in the storage chamber 28 does not meet the requirements, the ink can be drained first, and then cleaning fluid can be injected into the storage chamber to further clean the storage chamber 28, rotating roller 26, and coating roller 25. This facilitates the subsequent coating operation of the coating roller 25 with the corresponding ink color.

[0069] A process for seamless color blending of a liquid crystal display and a touch screen includes the following steps:

[0070] S1. First, the semi-transparent bonding material is bonded to the LCD screen to make a semi-finished product. The color coordinates of the semi-finished product are measured using a colorimeter. The color of the ink is adjusted according to the color coordinates so that the final color coordinates of the ink after printing on the cover plate are basically consistent with the color coordinates of the semi-finished product. Then, the ink is injected into the storage compartment 28.

[0071] S2. Place the semi-finished product in the placement slot 8. Drive the first rotating column 2 to rotate through the motor. The first rotating column 2 and the second rotating column 3 are connected by the first synchronous wheel 4, the second synchronous wheel 5 and the synchronous belt 6. When the first rotating column 2 rotates 90°, it can drive the bonding plate 9 to rotate 180°. At this time, the cross placement plate 7 rotates the semi-finished product to the bottom of the corresponding bonding slot 10.

[0072] S3. When placing the semi-finished product in the placement slot 8, simultaneously place the touch screen 12 in the frame 11. At this time, the touch screen 12 can just rest on the trapezoidal block 19. The contact distance between the trapezoidal block 19 and the touch screen 12 is small. Multiple vacuum suction cups 17 complete the adsorption and fixation of the touch screen 12. The drive motor 23 drives the lead screw 22 to rotate. The lead screw 22 drives the U-shaped frame 20 to move. The coating roller 25 abuts against the top of the touch screen 12. The coating roller 25 rotates under the action of the touch screen 12. 5 contacts and drives the rotating roller 26 to rotate. Under the action of the injection nozzle 27, the adjusted ink in the storage chamber 28 is coated on the surface of the rotating roller 26. The rotating roller 26 coats the ink onto the coating roller 25. Therefore, when the U-shaped frame 20 moves, the coating roller 25 can evenly coat the ink onto the touch screen 12. When the first rotating column 2 drives the cross placement plate 7 to rotate 90°, the second rotating column 3 drives the bonding plate 9 to rotate 180°. At that time, the touch screen 12 coated with ink is located above the semi-finished product.

[0073] S4. Then, the lead screw 22 rotates in the opposite direction to reset and move the U-shaped frame 20. After the U-shaped frame 20 moves a certain distance, the first trapezoidal push block 29 and the second trapezoidal push block 35 cooperate to drive the lifting plate 31 to move upward. The first spring 33 is in a compressed state. The lifting plate 31 can drive the push plate 18 and the trapezoidal block 19 to move away from the touch screen 12 through the connecting rod 32. The trapezoidal block 19 releases its support for the touch screen 12. Then, the motor drives the rotating rod 13 to rotate. The rotating rod 13 drives the frame 11 and the touch screen 12 to move downward through the cooperation of the slide groove 14 and the pin 15, so that the touch screen 12 can be attached to the top of the semi-finished product.

[0074] S5. After the semi-finished product and the touch screen 12 are bonded together, the frame 11 returns to its original position. The cross placement plate 7 moves the bonded semi-finished product and the touch screen 12 into the vacuum bonding machine 36 to further complete the bonding operation. Then the cross placement plate 7 rotates 90° again. Under the action of the second spring 39 and the inclined surface 40, the top column 37 passes through the through hole 41 and extends into the placement groove 8. The top column 37 can push out the finished product in the placement groove 8, making it easy for the staff to take it out. The operation is extremely convenient.

[0075] S6. When the ink color in the storage chamber 28 is not correct, the ink is discharged through the outlet. Then, an external air source injects gas into the hollow rotating shaft 42 through the air injection pipe 46. The gas is injected into the air bag 45 through the air vent pipe 44, and the air bag 45 expands. At this time, the cleaning cotton on the outer wall of the air bag 45 comes into contact with the outer wall of the coating roller 25. The rotating roller 26 is driven by the motor to rotate, and the rotating roller 26 drives the coating roller 25 to rotate. The rotating roller 26 drives the hollow rotating shaft 42 to rotate through gear meshing. At this time, the hollow rotating shaft 42 and the coating roller 25 rotate in the same direction. The cleaning cotton on the outer wall of the air bag 45 can remove the ink on the coating roller 25. Then, cleaning liquid is injected into the storage chamber 28 to further clean the storage chamber 28, the rotating roller 26 and the coating roller 25, so that the coating roller 25 can perform the corresponding color ink coating operation again in the later stage.

[0076] However, the working principle and wiring method of the drive motor 23 are commonplace and are all conventional methods or common knowledge, so they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0077] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A tooling for seamless color blending of a liquid crystal display screen and a touch screen, characterized in that, The workbench (1) is rotatably connected to a first rotating column (2) and a second rotating column (3). A cross-shaped placement plate (7) is fixedly fitted on the outer wall of the first rotating column (2). The top of the cross-shaped placement plate (7) is provided with four placement slots (8) for placing semi-finished products. A bonding plate (9) is fixedly fitted on the outer wall of the second rotating column (3). The bonding plate (9) is located above the cross-shaped placement plate (7). Two bonding slots (10) are provided in the bonding plate (9). Each of the two bonding slots (10) is provided with a frame (11) for placing a touch screen (12). It also includes four push plates (18) that are slidably set on the top of the bonding plate (9), and the four push plates (18) are in pairs. On the side of the two push plates (18) in the same group that are close to each other, there are multiple trapezoidal blocks (19). The trapezoidal blocks (19) are used to support the touch screen (12) inside the frame (11). It also includes two U-shaped frames (20), both of which are slidably mounted on the top of the bonding plate (9). Two first trapezoidal push blocks (29) are fixed on the side of the two U-shaped frames (20) that are close to each other. The first trapezoidal push blocks (29) can release the support of the trapezoidal blocks (19) on the touch screen (12). A coating structure, set within a U-shaped frame (20), is used to uniformly coat ink onto a touchscreen (12). The coating structure includes a coating roller (25) rotating within the U-shaped frame (20), with the bottom of the coating roller (25) contacting the top of the touchscreen (12). A rotating groove (24) is provided within the U-shaped frame (20), and a rotating roller (26) is rotatably connected within the rotating groove (24). The top of the coating roller (25) extends into the rotating groove (24) and contacts the rotating roller (26), used to coat the outer wall of the rotating roller (26) onto the outer wall of the coating roller (25). A storage compartment (28) for holding ink is provided within the U-shaped frame (20). A liquid injection nozzle (27) is fixed to the bottom inner wall of the container (28), and the bottom of the liquid injection nozzle (27) extends into the rotating groove (24) and touches the top of the rotating roller (26) to coat the ink on the outer wall of the rotating roller (26). A guide rod (21) slides through the U-shaped frame (20), and the guide rod (21) is fixed to the top of the bonding plate (9) through the base. A lead screw (22) is threaded through the U-shaped frame (20), and the lead screw (22) is rotatably set on the top of the bonding plate (9) through the base. A drive motor (23) is fixed to the top of the bonding plate (9), and the output shaft of the drive motor (23) is fixedly connected to one end of the lead screw (22) through a coupling. A hollow rotating shaft (42) is rotatably connected inside the U-shaped frame (20). A rotating wheel (43) is fixedly sleeved on the outer wall of the hollow rotating shaft (42). An air bladder (45) is fixedly sleeved on the outer wall of the rotating wheel (43). A vent pipe (44) is fixed inside the rotating wheel (43), and both ends of the vent pipe (44) extend into the air bladder (45) and the hollow rotating shaft (42) respectively, for injecting gas from the hollow rotating shaft (42) into the air bladder (45). The outer wall of the air bladder (45) is provided with cleaning cotton for cleaning ink on the coating roller (25). One end of the hollow rotating shaft (42) rotatably passes through the U-shaped frame (20). And extends to one side of the U-shaped frame (20). One end of the rotating roller (26) rotates through the U-shaped frame (20) and extends to one side of the U-shaped frame (20). The rotating roller (26) and the hollow rotating shaft (42) are driven by two gears meshing with each other. The other end of the hollow rotating shaft (42) rotates through the air injection pipe (46), and one end of the air injection pipe (46) is fixed through the U-shaped frame (20). The air injection pipe (46) is connected to the external air source through a hose. A rotating motor is fixed on one side of the U-shaped frame (20) through the machine box, and the output shaft of the rotating motor is fixedly connected to the other end of the rotating roller (26) through a coupling. Two bonding structures are respectively set in two frames (11) for bonding the ink-coated touch screen (12) to the semi-finished product; The discharge structure is set on the top side of the workbench (1) and is used to push out the finished product in the placement slot (8).

2. The auxiliary tooling for seamless color fusion of a liquid crystal display screen and a touch screen according to claim 1, characterized in that, The bonding structure includes four rotating rods (13), and the four rotating rods (13) are respectively rotatably disposed on the four inner walls of the bonding groove (10). Each of the four rotating rods (13) has a pin (15) rotating on the side near the frame (11). Each of the four side walls of the frame (11) is provided with a sliding groove (14), and the sliding groove (14) cooperates with the adjacent pin (15) to control the lifting and lowering of the frame (11). The inner wall of the frame (11) is provided with a rectangular groove (16), and multiple vacuum suction cups (17) are fixed on the inner wall of the rectangular groove (16) for adsorbing and fixing the touch screen (12).

3. The auxiliary tooling for seamless color fusion of a liquid crystal display screen and a touch screen according to claim 2, characterized in that, The bonding structure also includes two rectangular grooves (30) disposed in the bonding plate (9), and the two rectangular grooves (30) are located on both sides of the bonding groove (10). A lifting plate (31) is slidably connected in each of the two rectangular grooves (30). Two connecting rods (32) are rotatably connected to the top of each of the two lifting plates (31). The top ends of the two connecting rods (32) are rotatably connected to the bottom of two push plates (18) in the same group. The lifting of the lifting plate (31) can control the movement of the two push plates (18). 1) The top of the plate is fixed with a plurality of first springs (33), the top of the plurality of first springs (33) are fixedly connected to the top inner wall of the rectangular groove (30), the top of the lifting plate (31) is fixed with a fixing plate (34), and the top of the fixing plate (34) slides to extend above the bonding plate (9). A second trapezoidal push block (35) is fixed on one side of the fixing plate (34), and the second trapezoidal push block (35) cooperates with the first trapezoidal push block (29). The first trapezoidal push block (29) is used to drive the lifting plate (31) to rise.

4. The auxiliary tooling for seamless color fusion of a liquid crystal display screen and a touch screen according to claim 3, characterized in that, The discharge structure includes a fixed column (38) fixed on one side of the top of the workbench (1). A top column (37) is slidably sleeved on the outer wall of the fixed column (38). A second spring (39) is fixed on the inner wall of the top of the top column (37). The bottom end of the second spring (39) is fixedly connected to the top end of the fixed column (38). The cross placement plate (7) is provided with four through holes (41). The four through holes (41) are located in the corresponding placement grooves (8). The top of the top column (37) is provided with a slope (40). The top column (37) can penetrate through the through holes (41) and extend into the placement groove (8) with the cooperation of the second spring (39) and the slope (40).

5. The auxiliary tooling for seamless color fusion of a liquid crystal display screen and a touch screen according to claim 4, characterized in that, The outer walls of the first rotating column (2) and the second rotating column (3) are respectively fixedly fitted with the first synchronous wheel (4) and the second synchronous wheel (5). The first synchronous wheel (4) and the second synchronous wheel (5) are connected by a synchronous belt (6). The diameter of the first synchronous wheel (4) is larger than the diameter of the second synchronous wheel (5). The first rotating column (2) and the first synchronous wheel (4) rotate 90° to drive the second rotating column (3) and the bonding plate (9) to rotate 180°, so as to align the cross placement plate (7) with the frame (11) and facilitate the bonding of the semi-finished product with the touch screen (12).

6. The auxiliary tooling for seamless color fusion of a liquid crystal display screen and a touch screen according to claim 5, characterized in that, The thickness of the touch screen (12) is greater than the thickness of the frame (11), which facilitates the ink coating and bonding operations of the touch screen (12).

7. The auxiliary tooling for seamless color fusion of a liquid crystal display screen and a touch screen according to claim 6, characterized in that, A vacuum bonding machine (36) is fixed on the top of the workbench (1) for bonding the pre-bonded semi-finished product with the touch screen (12) in one step.

8. A process for using the auxiliary tooling for seamless color fusion of a liquid crystal display and a touch screen as described in claim 7, characterized in that, Includes the following steps: S1. Pretreatment and ink preparation: First, the translucent material is bonded to the liquid crystal display screen to form a semi-finished product, and its color coordinates are measured using a colorimeter. Subsequently, the ink color is precisely adjusted according to the color coordinates to ensure that the color coordinates of the ink after printing are consistent with the semi-finished product, and the adjusted ink is injected into the storage chamber (28). S2. Positioning of semi-finished product and touch screen (12): Place the semi-finished product in the placement slot (8) and rotate it to the designated bonding slot (10) through the synchronous transmission system; at the same time, place the touch screen (12) in the frame (11), fix it with the vacuum suction cup (17), and prepare to coat it with ink. S3, Ink Coating: The lead screw (22) and U-shaped frame (20) work together to drive the coating roller (25) to contact the touch screen (12). The ink in the storage compartment (28) is evenly coated onto the surface of the coating roller (25) by rotating the roller (26) and the injection nozzle (27). As the coating roller (25) moves, it ensures that the ink evenly covers the touch screen (12). S4. Touch screen (12) bonding: After coating is completed, the trapezoidal block (19) is released from its fixed support on the touch screen (12), and the touch screen (12) is moved down to the top of the semi-finished product by the motor to achieve precise bonding; S5. Finished product output: After lamination is completed, the finished product is sent to the vacuum laminator (36) for final processing; then, the finished product is automatically ejected by the top column (37) for easy handling. S6. Maintenance and cleaning: If the ink color is not right, drain the old ink, inject cleaning gas into the expansion air bladder (45), use cleaning cotton to remove residual ink from the coating roller (25), and inject cleaning liquid for thorough cleaning to prepare for the next coating operation; perform regular maintenance on the equipment, including cleaning the coating roller (25), rotating roller (26) and storage bin (28).

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