Touch screen laminating equipment and laminating process thereof

Abstract

The invention relates to the technical field of touch screen fitting, and discloses touch screen fitting equipment and a fitting process thereof.The touch screen fitting equipment comprises an equipment body, an upper die and a lower die, the upper die and the lower die are arranged on the equipment body, a heat conduction assembly is installed on the lower die through an elastic supporting piece, and an oil storage module located below the heat conduction assembly is installed on the lower die; the oil storage module comprises an elastic oil inlet and outlet piece, and a bag type module for placing the screen body is mounted on the oil storage module; when the upper die moves downwards, oil of the first oil guide piece is pushed into the heat conduction assembly, a touch screen is heated from the periphery to the middle, the viscosity of glue is reduced, the glue is evenly distributed, meanwhile, the middle is heated to balance thermal stress, the upper die further pushes oil of the second oil guide piece to enter the hollow oil storage plate, and the oil is sequentially guided into the capsule barrel and the capsule column through the control valve; pressure is uniformly applied to the bottom of the liquid crystal display screen, so that the laminating quality is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of touch screen lamination, and in particular to a touch screen lamination device and a lamination process thereof. Background Art

[0002] A touch screen is a human-computer interaction interface widely used in modern electronic devices. It allows users to operate the device by directly touching the screen surface without using a traditional mouse or keyboard. As a human-computer interaction interface, the touch screen usually needs to be laminated with a liquid crystal display to achieve complete display and operation functions. In the traditional lamination process, glue is usually used to stick the touch screen on the liquid crystal display to ensure a firm bond between the two. In order to improve the quality and efficiency of lamination, a special lamination equipment is usually used. The lamination equipment generally includes a lower mold, an upper mold and a cylinder. During the lamination process, the LCD screen and the touch screen are first placed on the lower mold, and then the upper mold is pushed down by the cylinder, so that the upper mold applies pressure to the adhesive parts around the touch screen and the LCD screen, thereby firmly sticking the touch screen to the LCD screen.

[0003] When the upper mold applies pressure to the touch screen on the LCD screen, the glue is squeezed and gradually distributed in the gap between the LCD screen and the touch screen. If the glue layer is thicker in some areas and thinner in others, the glue will preferentially flow from the thick layer areas to the thin layer areas. Uneven glue distribution will lead to inconsistent bonding strength between the touch screen and the LCD screen. Areas with insufficient glue may not be firmly bonded, while areas with accumulated glue may have bubbles. The risk of bubbles is higher when the glue lacks fluidity.

[0004] In order to solve the above problems, this application proposes a touch screen laminating device and a laminating process thereof. Summary of the Invention

[0005] The present invention proposes a touch screen bonding device and a bonding process thereof, which solves the problem in the related art that when the upper mold is pressed against the touch screen, the glue is unevenly distributed and of varying thickness, resulting in inconsistent bonding strength, weak bonding in places with less glue, and easy generation of bubbles in accumulated places, and the risk is even higher when the fluidity is insufficient.

[0006] The present invention provides a touch screen laminating device, comprising a device body and an upper mold and a lower mold arranged thereon;

[0007] A heat conducting component is mounted on the lower die through an elastic support member, and an oil storage module is mounted on the lower die below the heat conducting component, the oil storage module including elastic oil inlet and outlet parts;

[0008] The oil storage module is equipped with a capsule module for placing the screen body, and the main body of the equipment is equipped with a first oil guide member and a second oil guide member linked to the upper mold, the first oil guide member is connected to the heat conduction component, and the second oil guide member is connected to the oil storage module;

[0009] When the upper mold moves downward, it pushes the heat-conducting component to press the screen body. The first oil guide piece transports the oil into the heat-conducting component, forming heat conduction from the surrounding to the middle. At the same time, the second oil guide piece pushes the oil in the oil storage module into the elastic oil inlet and outlet parts, connecting the oil storage module with the bladder module. The oil is pushed into the bladder module under the action of the elastic oil inlet and outlet parts, applying a uniform pressure on the bottom surface of the screen that spreads from the middle to the surrounding areas.

[0010] As a further optimization scheme of the present invention, the heat conduction assembly includes a loading frame, a first heat conduction plate and a second heat conduction plate. The loading frame is installed on an elastic support member, the first heat conduction plate is installed in the middle of the loading frame, a first heat conduction cavity is defined in the first heat conduction plate, the second heat conduction plate is installed in the middle of the first heat conduction cavity, a rectangular cavity is formed between the second heat conduction plate and the first heat conduction plate, a second heat conduction cavity is defined in the second heat conduction plate, and openings are provided around the second heat conduction plate that are respectively connected to the second heat conduction cavity and the rectangular cavity. The first oil guide member is used to guide the oil into the rectangular cavity.

[0011] As a further optimization scheme of the present invention, the oil storage module also includes a hollow oil storage plate, which is installed on the lower mold and is connected to the second oil guide part. Oil is arranged in both the hollow oil storage plate and the second oil guide part. The bladder module is installed on the hollow oil storage plate, and the elastic oil inlet and outlet parts are connected to the side of the hollow oil storage plate and are connected to the inside of the hollow oil storage plate. The hollow oil storage plate has a built-in heating rod.

[0012] As a further optimization scheme of the present invention, the elastic oil inlet and outlet parts include an oil cylinder body, and the side of the hollow oil storage plate is connected to a plurality of oil cylinder bodies connected to the interior thereof. A first piston is slidably arranged in the oil cylinder body, and a shaft rod is installed at the end of the first piston, and one end of the shaft rod slides through the end of the oil cylinder body away from the hollow oil storage plate. A second spring is sleeved on the shaft rod, and the two ends of the second spring are respectively connected to the inner wall of the end of the oil cylinder body away from the hollow oil storage plate and the first piston. A third air hole is opened at the end of the oil cylinder body away from the hollow oil storage plate.

[0013] As a further optimization scheme of the present invention, the bladder module includes a loading plate, which is installed on a hollow oil storage plate. A bladder tube is installed in the middle of the loading plate. Multiple groups of matrix bladder components are provided on the outer periphery of the bladder tube. A second connecting tube is connected between adjacent groups of matrix bladder components. A first connecting tube is connected to the bladder tube, and the first connecting tube is connected to a group of matrix bladder components close to the bladder tube. A second control valve is installed on both the first connecting tube and the second connecting tube. Inlet and outlet pipes are connected between the hollow oil storage plate and the loading plate, and the inlet and outlet pipes are respectively connected to the hollow oil storage plate and the bladder tube. A first control valve is installed on the inlet and outlet pipes.

[0014] As a further optimization scheme of the present invention, the matrix capsule includes a rectangular tube and capsule columns. Multiple groups of rectangular tubes are arranged on the outer periphery of the capsule tube. Multiple capsule columns arranged in a matrix are connected to the path of the rectangular tube. The diameters of the multiple groups of capsule columns increase successively from the side of the capsule tube to the outside. A first loading hole is opened in the middle of the loading plate. The capsule tube is installed in the first loading hole. Multiple groups of second loading holes are opened on the loading plate and distributed in a matrix around the first loading hole. The diameters of the multiple groups of second loading holes are respectively adapted to the multiple groups of capsule columns, and the multiple groups of capsule columns are respectively installed in the multiple groups of second loading holes.

[0015] As a further optimization scheme of the present invention, the first oil guide part includes a first oil guide cylinder, two sliding openings are opened on the back of the equipment main body, and a first connecting block and a second connecting block are installed on the back of the upper mold, the first connecting block and the second connecting block are respectively slidably matched with the two sliding openings, and the second connecting block is connected to the second oil guide part, the first oil guide cylinder is installed on the back of the equipment main body and is located below the first connecting block, a second piston is slidably arranged in the first oil guide cylinder, oil is built in the first oil guide cylinder, a first connecting rod is installed on the second piston, and the top end of the first connecting rod slides through the top end of the first oil guide cylinder and is connected to the first connecting block, the bottom end of the first oil guide cylinder is connected to the first oil guide pipe, and one end of the first oil guide pipe passes through the first heat conducting plate and is connected to the rectangular cavity, the top end of the first oil guide cylinder is opened with a first air hole, and the inner wall of the first oil guide cylinder is installed with a heating plate for heating the oil.

[0016] As a further optimization scheme of the present invention, the second oil guide member includes a second oil guide cylinder, which is installed on the back of the equipment body, a third piston is slidably arranged in the second oil guide cylinder, and the oil is arranged in the second oil guide cylinder. A second connecting rod is installed on the third piston, and the top end of the second connecting rod slides through the top end of the second oil guide cylinder and is connected to the second connecting block. The bottom end of the second oil guide cylinder is connected to a second oil guide pipe, and one end of the second oil guide pipe is connected to the hollow oil storage plate, and a second air hole is opened at the top end of the second oil guide cylinder.

[0017] As a further optimization scheme of the present invention, the elastic support member includes a support tube, support tubes are installed on all four sides of the lower mold, a first spring is installed in the support tube, a support rod connected to the first spring is inserted on the support tube, and the loading frame is installed on four support rods.

[0018] A touch screen laminating process, using the above-mentioned touch screen laminating device, includes the following steps:

[0019] Step 1: Place the LCD screen. Apply glue to the edges around the LCD screen, then attach the touch screen to the LCD screen. Place the two on the capsule module, with the touch screen facing the heat conduction component.

[0020] Step 2: Pressing: The main body of the device drives the upper mold to move downward, applying pressure to the thermal conductive component. The thermal conductive component moves downward accordingly, and the elastic support member connected to the thermal conductive component is compressed. The thermal conductive component is pressed onto the touch screen. As the upper mold moves downward, the oil in the first oil guide member is pushed into the thermal conductive component, causing the oil to be distributed from the periphery to the center of the thermal conductive component to form heat conduction.

[0021] Step 3: Apply pressure at the bottom. When the upper mold moves downward, it pushes the oil in the second oil guide member into the hollow oil storage plate, so that the original oil in the hollow oil storage plate enters the elastic oil inlet and outlet member. After the heat conduction component is pressed on the touch screen for a period of time, the first control valve on the inlet and outlet pipe is opened, and the pressure in the elastic oil inlet and outlet member is released, and the oil in the hollow oil storage plate is pushed into the capsule along the inlet and outlet pipe, so that the capsule expands and applies pressure to the middle of the bottom surface of the LCD screen. Then, the second control valves on the first connecting pipe and the second connecting pipe are opened in sequence, so that the oil entering the capsule is distributed in turn in multiple groups of capsule columns arranged in a matrix, so that the force applied to the bottom of the LCD screen spreads from the middle to the surrounding areas.

[0022] Step 4: After the bonding is completed, the touch screen and the LCD screen are pressed together. After they are bonded, the main body of the equipment drives the upper mold to move upward, and the elastic support member pushes the heat-conducting component to return to its original position. The touch screen and the LCD screen are removed from the capsule module. When the upper mold moves upward, it drives the first oil guide member and the second oil guide member to move upward at the same time. When the first oil guide member moves upward, the oil in the heat-conducting component is drawn back into the first oil guide member. When the second oil guide member moves upward, the oil in the capsule column and the capsule tube is drawn back into the hollow oil storage plate along the inlet and outlet pipes. Then the second control valve and the first control valve are closed to prepare for the next pressing.

[0023] The above technical solution of the present invention has the following beneficial technical effects:

[0024] 1. When the present invention is used, the oil in the oil storage module, the first oil guide member and the second oil guide member is heated to a corresponding temperature in advance, and then glue is applied to the edges of the liquid crystal display screen. The touch screen is placed on the liquid crystal display screen so that the two are placed on the capsule module. The touch screen faces the heat conducting component, and the upper mold is driven downward by the device body to apply pressure to the heat conducting component. The heat conducting component follows the downward movement, and the elastic supporting member connected to the heat conducting component is compressed. The heat conducting component is pressed onto the touch screen. When the upper mold moves downward, the heated oil in the first oil guide member is pushed into the heat conducting component, so that the oil is distributed from the periphery to the center in the heat conducting component, so that the periphery of the touch screen is heated first, and the heat can be transferred to the glue between the touch screen and the liquid crystal display screen. By heating the glue, the viscosity of the glue can be reduced and its fluidity is enhanced, which makes the glue more evenly distributed in the gap between the touch screen and the liquid crystal display screen, avoiding the problem of uneven glue thickness, thereby ensuring consistent bonding strength between the touch screen and the liquid crystal display screen, reducing the phenomenon of loose bonding caused by insufficient glue, and improving the overall quality and reliability of the product.

[0025] 2. During the bonding process, the glue around the touch screen will expand when it is heated and cured. If the middle part is not properly heated, thermal stress may be concentrated in the middle area. When the oil is transferred to the middle of the thermal conductive component and heats the middle of the touch screen, it can balance the thermal stress distribution and reduce structural problems caused by uneven thermal expansion. This helps to improve the structural stability of the product and extend its service life, while ensuring the product's appearance quality and performance stability.

[0026] 3. During the downward movement of the upper mold of the present invention, the oil in the second oil guide member is simultaneously pushed into the hollow oil storage plate, so that the original oil in the hollow oil storage plate enters the elastic oil inlet and outlet member. After the heat conduction component is pressed on the touch screen for a period of time, the first control valve on the inlet and outlet pipe is then opened, and the pressure in the elastic oil inlet and outlet member is released, pushing the oil in the hollow oil storage plate into the capsule along the inlet and outlet pipe, so that the capsule expands and applies pressure to the middle part of the bottom surface of the liquid crystal display screen. Subsequently, the second control valves on the first connecting pipe and the second connecting pipe are opened in sequence, so that the oil entering the capsule is distributed in sequence in multiple groups of capsule columns arranged in a matrix, so that the multiple groups of capsule columns expand and apply pressure to the bottom of the liquid crystal display screen. Pressure: This pressure application method forms a form that spreads from the middle to the surrounding area at the bottom of the LCD screen, which can more evenly fit the touch screen and the LCD screen tightly, avoiding problems such as loose fitting and bubble generation caused by excessive or insufficient local pressure. At the same time, by controlling the opening sequence of the first control valve and the second control valve, the distribution and size of the pressure can be controlled, further improving the fitting quality. In addition, the oil has a certain amount of heat. When it enters the capsule tube and the capsule column to apply pressure to the bottom of the LCD screen, the heat can help the glue flow and solidify better, further improving the fitting quality of the touch screen and the LCD screen, and reducing the generation of bubbles and other poor fitting phenomena;

[0027] 4. The diameters of the multiple groups of capsule columns in the present invention increase progressively from the capsule tube side outward, allowing them to better adapt to the shape and structure of the LCD screen when pressure is applied. This design can further improve the uniformity of pressure distribution, ensuring that the touch screen and LCD screen are subjected to relatively uniform pressure at all locations. At the same time, the increasing capsule column diameter also helps to improve the stability of pressure application, avoiding local deformation or damage caused by uneven pressure, thereby further improving the product's fit quality and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of a touch screen laminating device proposed by the present invention.

[0029] Figure 2 This is a schematic diagram of the back structure of a touch screen laminating device proposed by the present invention.

[0030] Figure 3 It is a structural schematic diagram of the upper mold, lower mold, heat conduction component and oil storage module of the present invention.

[0031] Figure 4 Schematic diagram of the structure of the heat conducting component of the present invention.

[0032] Figure 5 It is a structural schematic diagram of the oil storage module and the bladder module of the present invention.

[0033] Figure 6 It is a structural schematic diagram of the capsule tube and matrix capsule of the present invention.

[0034] Figure 7 For the present invention Figure 6 Overall top view.

[0035] Figure 8 Schematic diagram of the structure of the loading plate of the present invention.

[0036] Figure 9 Schematic diagram of the bottom structure of the loading plate of the present invention.

[0037] Figure 10 It is a structural schematic diagram of the elastic oil inlet and outlet parts of the present invention.

[0038] Figure 11 Schematic diagram of the structure of the first oil guide member of the present invention.

[0039] Figure 12 Schematic diagram of the structure of the second oil guide member of the present invention.

[0040] Figure 13 It is a structural schematic diagram of the elastic support member of the present invention.

[0041] Figure numerals: 1. Equipment body; 101. Upper mold; 102. Lower mold; 103. First connecting block; 104. Second connecting block; 105. Slide; 106. Controller; 2. Elastic support member; 21. Support tube; 22. First spring; 23. Support rod; 3. Heat-conducting assembly; 31. Loading frame; 32. First heat-conducting plate; 33. Second heat-conducting plate; 34. Rectangular cavity; 35. Opening; 4. Oil storage module; 41. Hollow oil storage plate; 411. Heating rod; 42. Elastic oil inlet and outlet member; 421. Oil cylinder; 422. First piston; 423. Shaft; 424. Second spring; 425. Third air hole; 5. Capsule Module; 51, loading plate; 511, first loading hole; 512, second loading hole; 513, inlet and outlet pipes; 514, first control valve; 52, capsule; 53, matrix capsule; 531, rectangular tube; 532, capsule column; 54, first connecting pipe; 541, second connecting pipe; 542, second control valve; 6, first oil guide member; 61, first oil guide cylinder; 611, heating plate; 62, second piston; 63, first connecting rod; 64, first oil guide pipe; 65, first air hole; 7, second oil guide member; 71, second oil guide cylinder; 72, third piston; 73, second connecting rod; 74, second oil guide pipe; 75, second air hole. DETAILED DESCRIPTION

[0042] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0043] like Figure 1-13 As shown, a touch screen bonding device proposed by the present invention includes a device body 1 and an upper mold 101 and a lower mold 102 arranged thereon;

[0044] A heat conducting component 3 is mounted on the lower mold 102 via an elastic support member 2. An oil storage module 4 is mounted on the lower mold 102 below the heat conducting component 3. The oil storage module 4 includes an elastic oil inlet and outlet member 42.

[0045] The oil storage module 4 is equipped with a bladder module 5 for placing the screen body. The equipment body 1 is equipped with a first oil guide member 6 and a second oil guide member 7 linked to the upper mold 101. The first oil guide member 6 is connected to the heat conduction component 3, and the second oil guide member 7 is connected to the oil storage module 4.

[0046] When the upper mold 101 moves downward, it pushes the heat-conducting component 3 to press the screen body. The first oil guide 6 transports the oil into the heat-conducting component 3, forming heat conduction from the surrounding to the middle. At the same time, the second oil guide 7 pushes the oil in the oil storage module 4 into the elastic oil inlet and outlet parts 42, so that the oil storage module 4 is connected to the bladder module 5. The oil is pushed into the bladder module 5 under the action of the elastic oil inlet and outlet parts 42, applying a uniform pressure on the bottom surface of the screen that spreads from the middle to the surrounding.

[0047] When the present invention is in use, the oil in the oil storage module 4, the first oil guide member 6 and the second oil guide member 7 is heated to the corresponding temperature in advance, and then glue is applied to the edges of the liquid crystal display screen. The touch screen is placed on the liquid crystal display screen, so that the two are placed on the capsule module 5, and the touch screen faces the heat conduction component 3. Subsequently, the upper mold 101 is driven downward by the device body 1, and pressure is applied to the heat conduction component 3. The heat conduction component 3 moves downward accordingly, and the elastic support member 2 connected to the heat conduction component 3 is compressed, and the heat conduction component 3 is pressed onto the touch screen. At this time, the first oil guide member 6 linked to the upper mold 101 transports the oil to the heat conduction component 3, and the oil forms a circle around the heat conduction component 3. The heat conduction path toward the middle heats the surface of the touch screen and the glue. At the same time, the second oil guide 7 pushes the oil in the oil storage module 4 into the elastic oil inlet and outlet part 42. After the heat conduction component 3 is pressed on the touch screen for a period of time, the oil storage module 4 is then connected to the bladder module 5. The pressure in the elastic oil inlet and outlet part 42 is released, and the oil is pushed to the bladder module 5 under the elastic action of the elastic oil inlet and outlet part 42, applying a uniform pressure from the middle to the surrounding area to the bottom surface of the screen. The surrounding area is first heated to reduce the viscosity of the glue, improve the fluidity, make the glue evenly distributed, reduce the problem of inconsistent bonding strength, and uniformly distribute the pressure at the bottom to ensure a tight fit, avoid local bubbles, and improve the fit quality.

[0048] like Figure 3 and Figure 4 As shown, in this embodiment, the heat conducting assembly 3 includes a loading frame 31, a first heat conducting plate 32 and a second heat conducting plate 33. The loading frame 31 is mounted on the elastic support member 2, the first heat conducting plate 32 is mounted in the middle of the loading frame 31, a first heat conducting cavity is defined in the first heat conducting plate 32, the second heat conducting plate 33 is mounted in the middle of the first heat conducting cavity, a rectangular cavity 34 is formed between the second heat conducting plate 33 and the first heat conducting plate 32, a second heat conducting cavity is defined in the second heat conducting plate 33, and openings 35 are defined around the second heat conducting plate 33, which are respectively connected to the second heat conducting cavity and the rectangular cavity 34. The first oil guide member 6 is used to guide the oil into the rectangular cavity 34.

[0049] The first oil guide 6 guides the oil into the rectangular cavity 34. The oil first fills the rectangular cavity 34 and flows into the second heat conduction cavity through the openings 35 around the second heat conduction plate 33, forming a heat conduction path for heating the periphery and the middle of the touch screen. When the oil flows in the rectangular cavity 34 and the second heat conduction cavity, the heat is transferred to the surface of the touch screen through the first heat conduction plate 32 and the second heat conduction plate 33. The layered heat conduction structure realizes gradient heating of the periphery first and then the middle, balancing the thermal expansion stress of the screen body, avoiding deformation caused by local overheating or temperature difference, and at the same time extending the glue flow time to further improve uniformity.

[0050] like Figure 3 、 Figure 5 and Figure 12 As shown, in this embodiment, the oil storage module 4 also includes a hollow oil storage plate 41, the hollow oil storage plate 41 is installed on the lower mold 102, and the hollow oil storage plate 41 is connected to the second oil guide part 7, and oil is arranged in the hollow oil storage plate 41 and the second oil guide part 7. The bladder module 5 is installed on the hollow oil storage plate 41, and the elastic oil inlet and outlet part 42 is connected to the side of the hollow oil storage plate 41 and connected to the inside thereof, and the hollow oil storage plate 41 has a built-in heating rod 411.

[0051] The heating rod 411 in the hollow oil storage plate 41 preheats the oil. When the upper mold 101 moves downward, the oil is pushed into the hollow oil storage plate 41 through the second oil guide part 7. The internal oil pressure increases, forcing the oil to enter the elastic oil inlet and outlet parts 42. When the heat-conducting component 3 is pressed on the touch screen for a period of time, the hollow oil storage plate 41 can be connected to the capsule module 5, and the pressure in the elastic oil inlet and outlet parts 42 is released, pushing the oil into the capsule module 5. The heated oil provides heat for the pressure application process to assist the glue in curing.

[0052] like Figure 5 and Figure 10 As shown, in this embodiment, the elastic oil inlet and outlet part 42 includes an oil cylinder body 421, and a plurality of oil cylinder bodies 421 connected to the interior of the hollow oil storage plate 41 are connected to the side of the hollow oil storage plate 41. A first piston 422 is slidably arranged in the oil cylinder body 421, and a shaft rod 423 is installed at the end of the first piston 422, and one end of the shaft rod 423 slides through the end of the oil cylinder body 421 away from the hollow oil storage plate 41, and a second spring 424 is sleeved on the shaft rod 423, and the two ends of the second spring 424 are respectively connected to the inner wall of the end of the oil cylinder body 421 away from the hollow oil storage plate 41 and the first piston 422, and a third air hole 425 is opened at the end of the oil cylinder body 421 away from the hollow oil storage plate 41.

[0053] When the oil pressure in the hollow oil storage plate 41 increases, the oil pushes the first piston 422 to move toward the outside of the oil cylinder 421, compressing the second spring 424, and the shaft 423 extends outward synchronously. At this time, the third air hole 425 maintains the air pressure balance inside and outside the oil cylinder 421. When the first control valve 514 is opened, the oil pressure is released, and the second spring 424 returns to its original position, pushing the first piston 422 to squeeze the oil into the bladder module 5.

[0054] like Figure 3 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 9 As shown, in this embodiment, the bladder module 5 includes a loading plate 51, which is installed on the hollow oil storage plate 41. A bladder tube 52 is installed in the middle of the loading plate 51. Multiple groups of matrix bladder members 53 are arranged on the periphery of the bladder tube 52. Second connecting pipes 541 are connected between adjacent groups of matrix bladder members 53. A first connecting pipe 54 is connected to the bladder tube 52, and the first connecting pipe 54 is connected to a group of matrix bladder members 53 close to the bladder tube 52. A second control valve 542 is installed on both the first connecting pipe 54 and the second connecting pipe 541. An inlet and outlet pipe 513 is connected between the hollow oil storage plate 41 and the loading plate 51, and the inlet and outlet pipes 513 are respectively connected to the hollow oil storage plate 41 and the bladder tube 52. A first control valve 514 is installed on the inlet and outlet pipes 513.

[0055] The upper mold 101 moves downward to inject oil into the hollow oil storage plate 41 through the second oil guide member 7, and the oil pressure inside the hollow oil storage plate 41 increases. After the heat conduction component 3 presses the touch screen for a period of time, the first control valve 514 is opened first, and the oil enters the capsule 52 through the inlet and outlet pipes 513 to expand it, applying pressure to the middle of the bottom surface of the liquid crystal display screen. Subsequently, the second control valve 542 of the first connecting pipe 54 and the second connecting pipe 541 is opened in sequence, and the oil is filled in sequence from the capsule 52 to the proximal matrix capsule 53 and then to the distal matrix capsule 53. The pressure diffuses from the middle to the surrounding areas. The staged pressure control ensures that the liquid crystal display screen is positioned in the middle first and then fitted around the surrounding areas to avoid overflow of edge glue due to premature pressure. The hierarchical filling mode of the matrix capsule 53 realizes pressure gradient conduction, and the fitting is more uniform.

[0056] like Figure 6 、 Figure 7 and Figure 8As shown, in this embodiment, the matrix capsule 53 includes a rectangular tube 531 and a capsule column 532. A plurality of rectangular tubes 531 are arranged on the periphery of the capsule tube 52. A plurality of capsule columns 532 arranged in a matrix are connected to the path of the rectangular tube 531. The diameters of the plurality of capsule columns 532 increase successively from the side of the capsule tube 52 to the outside. A first loading hole 511 is provided in the middle of the loading plate 51. The capsule tube 52 is installed in the first loading hole 511. The loading plate 51 is provided with a plurality of second loading holes 512 distributed in a matrix around the first loading hole 511. The diameters of the plurality of second loading holes 512 are respectively adapted to the plurality of capsule columns 532. The plurality of capsule columns 532 are respectively installed in the plurality of second loading holes 512.

[0057] After the bladder 52 expands, the oil enters the innermost rectangular tube 531 through the first connecting tube 54, driving the bladder column 532 with a smaller diameter to expand first, and then fills the outer rectangular tube 531 in sequence through the second connecting tube 541. The bladder column 532 with increasing diameter expands layer by layer. The oil flow path is as follows: Figure 7 As indicated by the middle arrow, the capsule column 532 is interference fit with the second loading hole 512, ensuring that the pressure is transmitted vertically to the bottom surface of the LCD screen. The capsule columns 532 with increasing diameters adapt to the stress distribution difference from the edge to the center of the bottom surface of the LCD screen. The large-diameter capsule columns 532 at the edge provide greater pressure to offset the shrinkage force of the glue curing, and the small-diameter capsule columns 532 in the center avoid excessive extrusion, thereby improving the overall fitting flatness.

[0058] like Figure 2 and Figure 11 As shown, in this embodiment, the first oil guide member 6 includes a first oil guide cylinder 61, two sliding openings 105 are opened on the back of the equipment body 1, and a first connecting block 103 and a second connecting block 104 are installed on the back of the upper mold 101. The first connecting block 103 and the second connecting block 104 are respectively slidably matched with the two sliding openings 105. The second connecting block 104 is connected to the second oil guide member 7. The first oil guide cylinder 61 is installed on the back of the equipment body 1 and is located below the first connecting block 103. The second connecting block 104 is slidably provided in the first oil guide cylinder 61. The piston 62 and the first oil guide cylinder 61 are filled with oil. The second piston 62 is provided with a first connecting rod 63, and the top end of the first connecting rod 63 slides through the top end of the first oil guide cylinder 61 and is connected to the first connecting block 103. The bottom end of the first oil guide cylinder 61 is connected to the first oil guide pipe 64, and one end of the first oil guide pipe 64 passes through the first heat conduction plate 32 and is connected to the rectangular cavity 34. The top end of the first oil guide cylinder 61 is provided with a first air hole 65, and the inner wall of the first oil guide cylinder 61 is provided with a heating plate 611 for heating the oil.

[0059] The first connecting block 103 on the back of the upper mold 101 moves downward with the upper mold 101, pushing the first connecting rod 63 to drive the second piston 62 to move downward in the first oil guide cylinder 61, compressing the oil so that it flows into the rectangular cavity 34 through the first oil guide pipe 64, and the heating plate 611 preheats the oil. The first air hole 65 balances the air pressure in the cylinder. When the upper mold 101 moves upward, the second piston 62 resets and the oil flows back. The mechanical linkage oil guide structure ensures that heating and pressing are carried out synchronously, providing heat in real time. The air pressure balance design ensures smooth oil flow, and the heating plate 611 accurately controls the temperature to avoid overheating and damage to the touch screen.

[0060] like Figure 2 and Figure 12 As shown, in this embodiment, the second oil guide member 7 includes a second oil guide cylinder 71, which is installed on the back of the equipment body 1, and a third piston 72 is slidably arranged in the second oil guide cylinder 71. The oil is arranged in the second oil guide cylinder 71, and a second connecting rod 73 is installed on the third piston 72. The top end of the second connecting rod 73 slides through the top end of the second oil guide cylinder 71 and is connected to the second connecting block 104. The bottom end of the second oil guide cylinder 71 is connected to a second oil guide pipe 74, and one end of the second oil guide pipe 74 is connected to the hollow oil storage plate 41. A second air hole 75 is opened at the top end of the second oil guide cylinder 71.

[0061] The second connecting block 104 on the back of the upper mold 101 is linked to the second connecting rod 73 to push the third piston 72 downward in the second oil guide cylinder 71, and pressurize the oil into the hollow oil storage plate 41. The second air hole 75 maintains the air pressure balance. When the upper mold 101 moves upward, the third piston 72 is reset and the oil flows back to the second oil guide cylinder 71. The independent hydraulic circuit realizes the separation control of pressure conduction and heating to ensure the stability of the bottom pressure application.

[0062] like Figure 3 and Figure 13 As shown, in this embodiment, the elastic support member 2 includes a support tube 21, and the support tube 21 is installed on all four sides of the lower mold 102. A first spring 22 is installed in the support tube 21, and a support rod 23 connected to the first spring 22 is inserted on the support tube 21. The loading frame 31 is installed on the four support rods 23.

[0063] When the upper mold 101 presses down the thermal conductive component 3, the support rod 23 compresses the first spring 22 in the support tube 21, absorbing the impact energy and providing a buffering force. After the bonding is completed, the first spring 22 resets and pushes the support rod 23 upward, so that the thermal conductive component 3 is separated from the touch screen.

[0064] A touch screen laminating process, using the above-mentioned touch screen laminating device, includes the following steps:

[0065] Step 1: Placement: Apply glue to the edges of the LCD screen, then attach the touch screen to the LCD screen, placing the two on the capsule module 5, with the touch screen facing the heat conducting component 3;

[0066] Step 2: Pressing: The device body 1 drives the upper mold 101 downward, applying pressure to the heat-conducting component 3. The heat-conducting component 3 moves downward accordingly, and the elastic support member 2 connected to the heat-conducting component 3 is compressed. The heat-conducting component 3 is pressed onto the touch screen. As the upper mold 101 moves downward, it pushes the oil in the first oil guide member 6 into the heat-conducting component 3, so that the oil is distributed from the periphery to the center of the heat-conducting component 3 to form heat conduction.

[0067] Step 3: Apply pressure to the bottom. When the upper mold 101 moves downward, it pushes the oil in the second oil guide member 7 into the hollow oil storage plate 41, so that the original oil in the hollow oil storage plate 41 enters the elastic oil inlet and outlet member 42. After the heat conduction component 3 is pressed on the touch screen for a period of time, the first control valve 514 on the inlet and outlet pipe 513 is opened, and the pressure in the elastic oil inlet and outlet member 42 is released, and the oil in the hollow oil storage plate 41 is pushed into the capsule 52 along the inlet and outlet pipe 513, so that the capsule 52 expands and applies pressure to the middle of the bottom surface of the liquid crystal display screen. Then, the second control valve 542 on the first connecting pipe 54 and the second connecting pipe 541 is opened in sequence, so that the oil entering the capsule 52 is distributed in turn in multiple groups of capsule columns 532 arranged in a matrix, so that the force applied to the bottom of the liquid crystal display screen spreads from the middle to the surrounding areas.

[0068] Step 4: After the lamination is completed, the touch screen and the LCD screen are pressed together. After they are pressed together, the device body 1 drives the upper mold 101 to move upward, and the elastic support member 2 pushes the heat-conducting component 3 to return to its original position. The touch screen and the LCD screen are removed from the capsule module 5. When the upper mold 101 moves upward, it drives the first oil guide member 6 and the second oil guide member 7 to move upward at the same time. When the first oil guide member 6 moves upward, the oil in the heat-conducting component 3 is drawn back into the first oil guide member 6. When the second oil guide member 7 moves upward, the oil in the capsule column 532 and the capsule tube 52 is drawn back into the hollow oil storage plate 41 along the inlet and outlet pipes 513. Then the second control valve 542 and the first control valve 514 are closed to prepare for the next pressing.

[0069] like Figure 1 As shown, in a specific embodiment, a controller 106 is installed on the device body 1, and the first control valve 514, the second control valve 542, the heating rod 411, and the heating plate 611 are all connected to the controller 106; the controller 106 serves as the control core of the device, and accurately controls the first control valve 514, the second control valve 542, the heating rod 411, and the heating plate 611 through preset programs or real-time instructions to achieve dynamic coordination of temperature and pressure during the bonding process.

[0070] The specific working principle of the present invention is as follows:

[0071] When using the present invention, the oil in the oil storage module 4, the first oil guide member 6, and the second oil guide member 7 is preheated to a corresponding temperature. Glue is then applied to the edge of the LCD screen, and the touch screen is attached thereto and placed on the loading plate 51 of the capsule module 5, with the touch screen facing upward and aligned with the heat-conducting assembly 3. At this time, the capsule tube 52 and the matrix capsule member 53 of the capsule module 5 are in a deflated state, the first spring 22 of the elastic support member 2 is uncompressed, and the heat-conducting assembly 3 maintains a distance from the touch screen.

[0072] The device body 1 drives the upper mold 101 to move downward along the sliding opening 105. The first connecting block 103 and the second connecting block 104 respectively push the first oil guide member 6 and the second oil guide member 7 to operate. The upper mold 101 presses against the loading frame 31. The support rod 23 compresses the first spring 22, causing the first heat conducting plate 32 and the second heat conducting plate 33 to fit against the touch screen. At the same time, the second piston 62 in the first oil conducting cylinder 61 moves downward, pressing the heated oil into the rectangular cavity 34 through the first oil conducting pipe 64. The oil flows into the second heat conducting cavity through the opening 35, achieving gradient heating from the periphery to the center, reducing the viscosity of the glue and promoting uniform flow.

[0073] The third piston 72 in the second oil guide cylinder 71 moves downward, forcing oil into the hollow oil storage plate 41. The internal oil pressure increases, forcing the oil into the elastic oil inlet and outlet member 42. The first piston 422 compresses the second spring 424 to store pressure potential energy. After the touch screen is pressed and heated for a period of time, the first control valve 514 is opened, and the oil pressure in the elastic oil inlet and outlet member 42 is released. The second spring 424 pushes the oil into the capsule 52 through the inlet and outlet pipe 513, causing it to expand and exert pressure on the middle part of the bottom surface of the LCD screen. Subsequently, the second control valve 542 is opened in sequence, and the oil enters the matrix capsule 53 through the first connecting pipe 54 and the second connecting pipe 541. The capsule columns 532 with increasing diameters expand layer by layer, and the pressure spreads from the middle part of the bottom surface of the LCD screen to the surrounding areas, ensuring that the glue evenly fills the gap.

[0074] After the lamination is completed, the upper mold 101 moves upward, the first spring 22 resets to drive the heat-conducting component 3 to rise, and the second piston 62 and the third piston 72 in the first oil guide member 6 and the second oil guide member 7 reset synchronously, and the oil in the heat-conducting component 3 and the bladder module 5 is respectively drawn back to the first oil guide cylinder 61 and the hollow oil storage plate 41, and then the first control valve 514 and the second control valve 542 are closed to complete a lamination cycle.

[0075] It should be understood that the above-described specific embodiments of the present invention are merely illustrative or illustrative of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included within the scope of protection of the present invention. In addition, the appended claims are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents thereof.

Claims

1. A touch screen laminating device, characterized in that: It comprises an equipment body (1) and an upper mold (101) and a lower mold (102) arranged thereon; A heat conducting component (3) is mounted on the lower mold (102) via an elastic support member (2); an oil storage module (4) located below the heat conducting component (3) is mounted on the lower mold (102); the oil storage module (4) includes an elastic oil inlet and outlet member (42); The oil storage module (4) is equipped with a bladder module (5) for placing the screen body, and the equipment body (1) is equipped with a first oil guide member (6) and a second oil guide member (7) linked to the upper mold (101), the first oil guide member (6) is connected to the heat conduction component (3), and the second oil guide member (7) is connected to the oil storage module (4); When the upper mold (101) moves downward, it pushes the heat-conducting component (3) to press the screen body, and the first oil guide member (6) transports the oil into the heat-conducting component (3), forming heat conduction from the periphery to the center. At the same time, the second oil guide member (7) pushes the oil in the oil storage module (4) into the elastic oil inlet and outlet member (42), so that the oil storage module (4) is connected to the bladder module (5). The oil is pushed into the bladder module (5) under the action of the elastic oil inlet and outlet member (42), and a uniform pressure is applied to the bottom surface of the screen body, which spreads from the center to the periphery.

2. The touch screen laminating device according to claim 1, characterized in that: The heat conduction assembly (3) comprises a loading frame (31), a first heat conduction plate (32) and a second heat conduction plate (33); the loading frame (31) is mounted on the elastic support member (2); the first heat conduction plate (32) is mounted in the middle of the loading frame (31); a first heat conduction cavity is provided in the first heat conduction plate (32); the second heat conduction plate (33) is mounted in the middle of the first heat conduction cavity; a rectangular cavity (34) is formed between the second heat conduction plate (33) and the first heat conduction plate (32); a second heat conduction cavity is provided in the second heat conduction plate (33); openings (35) are provided around the second heat conduction plate (33) and are respectively connected to the second heat conduction cavity and the rectangular cavity (34); and a first oil guide member (6) is used to guide oil into the rectangular cavity (34).

3. The touch screen laminating device according to claim 2, characterized in that: The oil storage module (4) further comprises a hollow oil storage plate (41), which is mounted on the lower mold (102) and is in communication with the second oil guide member (7). Oil is arranged in both the hollow oil storage plate (41) and the second oil guide member (7). The bladder module (5) is mounted on the hollow oil storage plate (41), and the elastic oil inlet and outlet member (42) is connected to the side of the hollow oil storage plate (41) and is in communication with the interior thereof. A heating rod (411) is built into the hollow oil storage plate (41).

4. The touch screen laminating device according to claim 3, characterized in that: The elastic oil inlet and outlet member (42) includes an oil cylinder (421). The side of the hollow oil storage plate (41) is connected to a plurality of oil cylinders (421) in communication with the interior thereof. A first piston (422) is slidably arranged in the oil cylinder (421). A shaft (423) is installed at the end of the first piston (422), and one end of the shaft (423) slides through the end of the oil cylinder (421) away from the hollow oil storage plate (41). A second spring (424) is sleeved on the shaft (423), and the two ends of the second spring (424) are respectively connected to the inner wall of the end of the oil cylinder (421) away from the hollow oil storage plate (41) and the first piston (422). A third air hole (425) is opened at the end of the oil cylinder (421) away from the hollow oil storage plate (41).

5. The touch screen laminating device according to claim 3, characterized in that: The capsule module (5) comprises a loading plate (51), which is mounted on a hollow oil storage plate (41). A capsule (52) is mounted in the middle of the loading plate (51). A plurality of matrix capsules (53) are arranged on the periphery of the capsule (52). A second connecting pipe (541) is connected between adjacent matrix capsules (53). A first connecting pipe (54) is connected to the capsule (52), and the first connecting pipe (54) is connected to a group of matrix capsules (53) close to the capsule (52). A second control valve (542) is mounted on both the first connecting pipe (54) and the second connecting pipe (541). An inlet and outlet pipe (513) is connected between the hollow oil storage plate (41) and the loading plate (51), and the inlet and outlet pipes (513) are respectively communicated with the hollow oil storage plate (41) and the capsule (52). A first control valve (514) is mounted on the inlet and outlet pipe (513).

6. The touch screen laminating device according to claim 5, characterized in that: The matrix capsule (53) comprises a rectangular tube (531) and capsule columns (532). The outer periphery of the capsule tube (52) is provided with multiple groups of rectangular tubes (531). The paths of the rectangular tubes (531) are connected to multiple capsule columns (532) arranged in a matrix. The diameters of the multiple groups of capsule columns (532) increase sequentially from the side of the capsule tube (52) to the outside. A first loading hole (511) is provided in the middle of the loading plate (51). The capsule tube (52) is installed in the first loading hole (511). The loading plate (51) is provided with multiple groups of second loading holes (512) distributed in a matrix around the first loading hole (511). The diameters of the multiple groups of second loading holes (512) are respectively adapted to the multiple groups of capsule columns (532). The multiple groups of capsule columns (532) are respectively installed in the multiple groups of second loading holes (512).

7. The touch screen laminating device according to claim 3, characterized in that: The first oil guide member (6) includes a first oil guide cylinder (61), two sliding openings (105) are provided on the back of the equipment body (1), a first connecting block (103) and a second connecting block (104) are installed on the back of the upper mold (101), the first connecting block (103) and the second connecting block (104) are respectively slidably matched with the two sliding openings (105), the second connecting block (104) is connected to the second oil guide member (7), the first oil guide cylinder (61) is installed on the back of the equipment body (1) and is located below the first connecting block (103), and a second piston ( 62), the first oil guide cylinder (61) is filled with oil, a first connecting rod (63) is installed on the second piston (62), and the top end of the first connecting rod (63) slides through the top end of the first oil guide cylinder (61) and is connected to the first connecting block (103), the bottom end of the first oil guide cylinder (61) is connected to the first oil guide pipe (64), and one end of the first oil guide pipe (64) passes through the first heat conduction plate (32) and is connected to the rectangular cavity (34), the top end of the first oil guide cylinder (61) is provided with a first air hole (65), and the inner wall of the first oil guide cylinder (61) is installed with a heating plate (611) for heating the oil.

8. The touch screen laminating device according to claim 7, characterized in that: The second oil guide member (7) includes a second oil guide cylinder (71), which is installed on the back of the equipment body (1). A third piston (72) is slidably arranged in the second oil guide cylinder (71), and oil is arranged in the second oil guide cylinder (71). A second connecting rod (73) is installed on the third piston (72), and the top end of the second connecting rod (73) slides through the top end of the second oil guide cylinder (71) and is connected to the second connecting block (104). The bottom end of the second oil guide cylinder (71) is connected to a second oil guide pipe (74), and one end of the second oil guide pipe (74) is connected to the hollow oil storage plate (41). A second air hole (75) is opened at the top end of the second oil guide cylinder (71).

9. The touch screen laminating device according to claim 2, characterized in that: The elastic support member (2) comprises a support tube (21), the support tubes (21) are installed around the lower mold (102), a first spring (22) is installed in the support tube (21), a support rod (23) connected to the first spring (22) is inserted on the support tube (21), and the loading frame (31) is installed on the four support rods (23).

10. A touch screen laminating process, using a touch screen laminating device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Placement: Apply glue to the edges of the LCD screen, and then attach the touch screen to the LCD screen so that the two are placed on the capsule module (5) with the touch screen facing the heat conducting component (3); Step 2: Pressing: The device body (1) drives the upper mold (101) to move downward, exerting pressure on the heat-conducting component (3), and the heat-conducting component (3) moves downward accordingly. The elastic support member (2) connected to the heat-conducting component (3) is compressed, and the heat-conducting component (3) is pressed onto the touch screen. While the upper mold (101) moves downward, the oil in the first oil guide member (6) is pushed into the heat-conducting component (3), so that the oil is distributed from the periphery to the center of the heat-conducting component (3) to form heat conduction; Step 3: Apply pressure to the bottom. When the upper mold (101) moves downward, it pushes the oil in the second oil guide member (7) into the hollow oil storage plate (41), so that the original oil in the hollow oil storage plate (41) enters the elastic oil inlet and outlet member (42). After the heat conduction component (3) is pressed on the touch screen for a period of time, the first control valve (514) on the inlet and outlet pipe (513) is opened, and the pressure in the elastic oil inlet and outlet member (42) is released, and the oil in the hollow oil storage plate (41) is pushed into the capsule (52) along the inlet and outlet pipe (513), so that the capsule (52) expands and applies pressure to the middle of the bottom surface of the liquid crystal display screen. Then, the second control valve (542) on the first connecting pipe (54) and the second connecting pipe (541) is opened in sequence, so that the oil entering the capsule (52) is distributed in sequence in multiple groups of capsule columns (532) arranged in a matrix, so that the force applied to the bottom of the liquid crystal display screen spreads from the middle to the surrounding areas. Step 4: After the lamination is completed, the touch screen and the liquid crystal display are pressed together. After the lamination, the device body (1) drives the upper mold (101) to move upward, and the elastic support member (2) pushes the heat conduction component (3) to return to its original position, and the touch screen and the liquid crystal display are removed from the capsule module (5). When the upper mold (101) moves upward, it drives the first oil guide member (6) and the second oil guide member (7) to move upward at the same time. When the first oil guide member (6) moves upward, the oil in the heat conduction component (3) is drawn back into the first oil guide member (6). When the second oil guide member (7) moves upward, the oil in the capsule column (532) and the capsule tube (52) is drawn back into the hollow oil storage plate (41) along the inlet and outlet pipes (513). Then, the second control valve (542) and the first control valve (514) are closed to prepare for the next pressing.

Images