Vacuum laminating device for large-size touch display screen

Abstract

The invention relates to the technical field of touch screen laminating, in particular to a large-size touch display screen vacuum laminating device which comprises a bearing platform, the bearing platform is fixedly connected to a bottom plate, a positioning mold is placed on the bearing platform, a display inner screen is clamped in the positioning mold, a hole is formed in the display inner screen, and a display outer screen is laminated on the display inner screen. One side of the display outer screen is fixedly connected with a flexible circuit board, and the second connecting plate is fixedly connected to the bottom plate. The blocking plate is pulled leftwards, the first connecting piece can extrude the fixing piece, the first connecting plate is pulled outwards, so that the area of the fixing square frame is increased, the positioning mold provided with the display inner screen can be placed on the bearing platform, the blocking plate and the first connecting plate move and reset, and the blocking plate and the first connecting plate jointly extrude the display inner screen; the display inner screen is clamped in the fixing square frame, the positioning mold can be fixed, and the display outer screen can be better attached to the display inner screen.

Description

Technical Field

[0001] The present invention relates to the technical field of touch screen lamination, and in particular to a vacuum lamination device for a large-size touch display screen. Background Art

[0002] Vacuum bonding technology is widely used in a variety of electronic devices. Under vacuum conditions, the optical double-sided tape between the inner and outer display screens will bond together. Vacuum bonding can avoid the generation of bubbles and rainbows, and enhance the user experience. Before vacuum bonding, the outer display screen needs to be simply bonded to the inner display screen.

[0003] When simply laminating the display screen, it is necessary to use a positioning mold that is suitable for the size of the display screen to position the display screen. The positioning mold can make the display screen more evenly stressed, ensure the stability of the lamination, and improve the accuracy of the fit. First, the inner screen of the display needs to be clamped in the positioning mold. The staff usually needs to fix the positioning mold with the inner screen of the display, and then the flexible printed circuit board connected to the back of the outer screen of the display needs to be inserted into the inner screen of the display. Inserting the flexible circuit board into the inner screen of the display can enhance the structural strength of the flexible display screen, optimize the camera module design of the electronic setting, and protect the protective film layer at the light-transmitting hole. The flexible printed circuit board will pass through the hole on the inner screen of the display and Pass it out from under the display inner screen, then flip the display outer screen onto the display inner screen, so that the display outer shell is located above the display inner screen, and then lightly press the display outer screen to make the display outer screen fit better on the display inner screen. In this way, the simple bonding of the display screen is completed. Finally, the display screen that has been simply bonded is placed in a vacuum bonding device for vacuum bonding. However, because the prior art requires staff to fix the positioning mold with the display inner screen placed on it and flip the display outer screen onto the display inner screen, it is time-consuming and labor-intensive. Therefore, a large-size touch display screen vacuum bonding device is now developed, which can fix positioning molds of different sizes and automatically flip the display outer screen onto the display inner screen, saving time and labor. Summary of the invention

[0004] The present invention provides a vacuum bonding device for a large-size touch display screen, which can fix positioning molds of different sizes and automatically flip an outer display screen onto an inner display screen, saving time and labor, and is used to overcome the disadvantages of workers fixing the positioning mold on which the inner display screen is placed and flipping the outer display screen onto the inner display screen, which is time-consuming and labor-intensive.

[0005] The technical solution is: a large-size touch display screen vacuum bonding device, including a base, the base is fixedly connected to the bottom plate, the positioning mold is placed on the base, the display inner screen is clamped in the positioning mold, the display inner screen is provided with holes, the display outer screen is bonded to the display inner screen, one side of the display outer screen is fixedly connected with a flexible circuit board, and also includes a second connecting plate, the second connecting plate is fixedly connected to the bottom plate, a square groove is provided in the second connecting plate, a symmetrically arranged first connecting plate is slidably connected to the side of the second connecting plate close to the base, a sliding groove is provided on the first connecting plate, and a fixing piece is fixed. The first rotating rod is rotatably connected to the outer side of the first connecting plate, the first rotating rod is rotatably connected to the first connecting plate, the first rotating rod is symmetrically arranged, the first gear is fixedly connected to the outer end of the first rotating rod, the first gear and the first rack are meshed with each other, the rotating plate is fixedly connected to the inner end of the first rotating rod, the rotating plate is extruded and matched with the display outer screen, the sliding component is arranged on the bottom plate, the sliding component is used to push the positioning mold, the driving component is fixedly connected to the bottom plate, the driving component is used to drive the rotating plate to rotate, the adsorption component is fixedly connected between the symmetrically arranged rotating plates, and the adsorption component is used to adsorb the display outer screen.

[0006] Furthermore, the sliding assembly includes a fixed plate, which is fixedly connected to a position above the base plate away from the second connecting plate, and the fixed plate is provided with symmetrically arranged through holes, the sliding rod is slidably connected to the fixed plate through the through holes, the blocking plate is fixedly connected between one end of the symmetrically arranged sliding rod close to the base, the pressure spring is wound on the sliding rod, one end of the pressure spring is fixedly connected to the fixed plate, the other end of the pressure spring is fixedly connected to the blocking plate, the first connecting piece is fixedly connected to both sides of the blocking plate, the side of the first connecting piece away from the first connecting plate is an inclined surface inclined outward, the inclined surface is extruded and matched with the fixing piece, the telescopic rod is slidably connected in the sliding groove of the first connecting plate, the telescopic end of the telescopic rod is fixedly connected to the first connecting piece, the reset spring is wound on the telescopic rod, one end of the reset spring is fixedly connected to the fixed end of the telescopic rod, and the other end of the reset spring is fixedly connected to the telescopic end of the telescopic rod.

[0007] Furthermore, it also includes an air valve, which is fixedly connected to the bottom plate near the fixed plate, and one end of the air valve is fixedly connected to the blocking plate.

[0008] Furthermore, the handle is fixedly connected to a side of the blocking plate away from the second connecting plate, and is used to pull the blocking plate to move.

[0009] Furthermore, the driving assembly includes a motor, which is fixedly connected to the base plate, a first screw is fixedly connected to the output shaft of the motor, symmetrically arranged guide rods are fixedly connected to the base plate, a second connecting member is slidably connected between the symmetrically arranged guide rods, the second connecting member is threadedly connected to the first screw, and a first rack is fixedly connected to both ends of the second connecting member.

[0010] Furthermore, the adsorption assembly includes a first connecting block, the first connecting block is fixedly connected between the symmetrically arranged rotating plates, the suction cup is fixedly connected to the first connecting block, the vacuum pump is fixedly connected to the side of the suction cup close to the second connecting piece, and the air pipe is connected between the suction cup and the vacuum pump, and the air pipe connects the suction cup and the vacuum pump.

[0011] Furthermore, the tensioning mechanism includes a fixed rod, the symmetrically arranged fixed rod is slidably connected in the square groove of the second connecting plate, the guide block is fixedly connected to the side of the second connecting plate away from the first screw, the guide block is extruded and matched with the flexible printed circuit board connected to the display outer screen, the second screw is rotatably connected to the symmetrically arranged fixed rod, the symmetrically arranged second gear is fixedly connected to the second screw, the first roller is fixedly connected in the middle of the second screw, the first roller is extruded and matched with the flexible printed circuit board, and the symmetrically arranged second rack is fixedly connected to the side of the second connecting plate close to the first roller The second rack is meshed with the second gear, the fixed block is fixedly connected to the bottom of the second rack, the third screw is threadedly connected between the symmetrically arranged fixed blocks, the second roller is fixedly connected to the third screw, the second roller is extruded and matched with the flexible printed circuit board, the telescopic column is arranged between the second screw and the third screw, the telescopic column is arranged symmetrically along the first roller, one end of the telescopic column is threadedly connected to the second screw, and the other end of the telescopic column is threadedly connected to the third screw. The pulling assembly is arranged above the bottom plate, the pulling assembly is fixedly connected to the fixed rod, and the pulling assembly is used to pull the fixed rod.

[0012] Furthermore, the pulling assembly includes a first connecting rod, which is fixedly connected to the second connecting member on a side away from the second connecting plate, a wedge block is provided at the bottom of the first connecting rod, the sliding frame is fixedly connected between the symmetrically arranged fixed rods, a symmetrically arranged slideway is provided on the bottom plate, a guide rod is fixedly connected in the slideway, the sliding frame is slidably connected to the guide rod, the wedge block at the bottom of the first connecting rod is extruded and fitted with the sliding frame, the telescopic spring is wound on the guide rod, one end of the telescopic spring is fixedly connected to the sliding frame, and the other end of the telescopic spring is fixedly connected to the guide rod.

[0013] Furthermore, it also includes an adjustment mechanism for fitting the outer screen to the inner screen, the adjustment mechanism includes a third rack, the third rack vertically symmetrically arranged along the blocking plate is slidably connected to the bottom plate, a force storage spring is wound on the symmetrically arranged third rack, one end of the force storage spring is fixedly connected to the third rack, the other end of the force storage spring is fixedly connected to the bottom plate, a symmetrically arranged second connecting block is fixedly connected to the blocking plate, the second connecting block is vertically symmetrically arranged along the blocking plate, the second rotating rod is rotatably connected to the second connecting block, the third gear is fixedly connected to the outer end of the second rotating rod, the third gear and the third rack are meshed with each other, the electric push rod is fixedly connected to one end of the second rotating rod away from the third gear, the pulley is fixedly connected to the telescopic end of the electric push rod close to the rotating plate, the pulley is extruded and matched with the display outer screen, and the pressing down component is fixedly connected to the first rack, and the pressing down component is used to press down the third rack.

[0014] Furthermore, the pressing assembly includes a third connecting rod, which is symmetrically arranged and fixedly connected to both sides of the sliding frame, the second connecting rod is fixedly connected to one end of the third connecting rod away from the sliding frame, the second connecting rod is extruded and matched with the third rack, and a clamping block is provided at one end of the second connecting rod close to the second connecting block, the third connecting block is fixedly connected to the first rack, and the third connecting block is slidably connected to the second connecting rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the present invention, by pulling the blocking plate to the left, the first connecting member will squeeze the fixing member, and the first connecting plate will be pulled outward to increase the area of ​​the fixed frame. The positioning mold equipped with the display inner screen can be placed on the support platform, and the blocking plate and the first connecting plate are moved and reset. The blocking plate and the first connecting plate jointly squeeze the display inner screen, so that the display inner screen is stuck in the fixed frame. The positioning mold can be fixed, so that the display outer screen can better fit on the display inner screen.

[0017] 2. The present invention absorbs the outer display screen through the suction cup, and the first screw will drive the second connecting member to move downward, and the movement of the second connecting member will drive the first rack to move downward, so that the rotating plate will rotate, and the rotation of the rotating plate will drive the outer display screen to rotate downward, and the rotation of the outer display screen will cover the top of the inner display screen. In this way, the outer display screen can be slowly covered above the inner display screen, and the outer display screen can be aligned and installed on the inner display screen.

[0018] 3. The present invention inserts the downward-moving flexible printed circuit board between the first roller and the second roller through the guide block, and drives the second screw to rotate and move to the right through the fixed rod moving to the right. The rotation of the second screw will cause the second roller to rotate through the telescopic column, so that the flexible printed circuit board can be pulled downward, so that the flexible printed circuit board passes completely through the inner screen, and the outer screen fits more closely to the inner screen.

[0019] 4. The present invention presses the third rack downward through the second connecting rod, and the third rack drives the second rotating rod to rotate. The rotation of the second rotating rod drives the electric push rod and the pulley to rotate downward. The downward rotation of the pulley will contact the display outer screen, control the electric push rod to extend, and make the pulley lightly press the display outer screen, so that the display outer screen fits on the display inner screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the baffle plate, support platform, air valve and other components of the present invention.

[0022] Figure 3 It is a sectional view of the three-dimensional structure of the air valve, the blocking plate, the pressure spring and other components of the present invention.

[0023] Figure 4 It is a sectional view of the three-dimensional structure of the blocking plate, the return spring, the fixing part and other components of the present invention.

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the return spring, air pipe, fixing part and other components of the present invention.

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the suction cup, rotating plate, motor and other components of the present invention.

[0026] Figure 7 It is a sectional view of the three-dimensional structure of the rotating plate, the first connecting block, the first gear and other components of the present invention.

[0027] Figure 8 It is a sectional view of the three-dimensional structure of the guide block, base plate, fixing rod and other components of the present invention.

[0028] Fig. 9 It is a schematic diagram of the three-dimensional structure of the fixing rod, telescopic column, second gear and other components of the present invention.

[0029] Fig.10 It is a schematic diagram of the three-dimensional structure of the bottom plate, sliding frame, telescopic spring and other components of the present invention.

[0030] Fig.11 It is a schematic diagram of the three-dimensional structure of the sliding frame, pulley, electric push rod and other components of the present invention.

[0031] Fig.12 It is a schematic diagram of the three-dimensional structure of the second connecting block, the electric push rod, the pulley and other components of the present invention.

[0032] Parts names and serial numbers in the figure: 1-bottom plate, 11-blocking plate, 12-first connecting plate, 13-air valve, 14-pressure spring, 15-reset spring, 16-first connecting piece, 17-fixing piece, 18-display inner screen, 19-second connecting plate, 110-display outer screen, 111-support, 112-fixing plate, 113-sliding rod, 114-positioning mold, 2-trachea, 21-vacuum pump, 22-suction cup, 23-first gear, 24-first rack, 25-rotating plate, 26-first connecting block, 27-second connecting piece, 28-guide rod, 29-first rotating Rod, 210-motor, 211-first screw, 3-first connecting rod, 31-sliding frame, 32-fixed rod, 33-guide block, 34-first roller, 35-second gear, 36-second screw, 37-telescopic column, 38-third screw, 39-second roller, 310-second rack, 311-fixed block, 312-telescopic spring, 4-second connecting block, 41-third gear, 42-third rack, 43-electric push rod, 44-pulley, 45-third connecting block, 46-second connecting rod, 47-storage spring, 48-third connecting rod, 49-second rotating rod. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0034] Embodiment 1: A vacuum bonding device for a large-size touch display screen, such as Figure 1-Figure 5As shown, it includes a bottom plate 1, a blocking plate 11, a first connecting plate 12, an air valve 13, a pressure spring 14, a return spring 15, a first connecting member 16, a fixing member 17, a second connecting plate 19, a support 111, a fixing plate 112 and a sliding rod 113. The second connecting plate 19 is fixedly connected to the top of the bottom plate 1. A square groove is provided in the second connecting plate 19. Two first connecting plates 12 symmetrically arranged front and back are slidably connected to the left side of the second connecting plate 19. Slide grooves are provided on the first connecting plates 12. The support 111 is fixedly connected to the middle position above the bottom plate 1. The positioning mold 114 is placed Directly above the support platform 111, the inner display screen 18 is clamped in the positioning mold 114, a hole is provided above the inner display screen 18 near the second connecting plate 19, the outer display screen 110 is fitted directly above the inner display screen 18, a flexible circuit board is fixedly connected to the right side of the outer display screen 110, a fixing plate 112 is fixedly connected to a position above the bottom plate 1 away from the second connecting plate 19, two through holes are provided on the fixing plate 112, the sliding rods 113 are slidably connected to the fixing plate 112 through the through holes, the blocking plate 11 is fixedly connected between the right ends of the two sliding rods 113, the blocking plate 11, The second connecting plate 19 and the two first connecting plates 12 together form a fixed frame to fix the positioning mold 114. A handle is fixedly connected to the left side of the blocking plate 11. The pressure springs 14 are all wound on the sliding rod 113. One end of the pressure springs 14 is fixedly connected to the fixed plate 112. The other end of the pressure springs 14 is fixedly connected to the blocking plate 11. The air valve 13 is fixedly connected above the bottom plate 1. The air valve 13 is located in front of the fixed plate 112. The right end of the air valve 13 is fixedly connected to the blocking plate 11. The first connecting member 16 is fixedly connected to the front and rear of the blocking plate 11 respectively. On both sides, the side of the first connecting member 16 away from the first connecting plate 12 is an inclined surface inclined outward, and the inclined surface is squeezed and matched with the fixing member 17, and the telescopic rods are respectively slidably connected in the slide grooves of the first connecting plate 12, and the telescopic ends of the telescopic rods are fixedly connected to the first connecting member 16, and the return springs 15 are all wound on the telescopic rods, one end of the return springs 15 is fixedly connected to the fixed end of the telescopic rod, and the other end of the return springs 15 is fixedly connected to the telescopic end of the telescopic rod, and the fixing members 17 are respectively fixedly connected to the outside of the first connecting plate 12, and the first connecting member 16 and the fixing member 17 are squeezed and matched.

[0035] like Figure 6 and Figure 7As shown, it also includes a mounting mechanism for mounting the outer screen on the inner screen, the mounting mechanism includes an air pipe 2, a vacuum pump 21, a suction cup 22, a first gear 23, a first rack 24, a rotating plate 25, a first connecting block 26, a second connecting member 27, a guide rod 28, a first rotating rod 29, a motor 210 and a first screw 211, the motor 210 is fixedly connected above the bottom plate 1, the motor 210 is located on the right side of the connecting plate 19, the first screw 211 is fixedly connected to the output shaft of the motor 210, the guide rods 28 are symmetrically arranged front and back and fixedly connected to the bottom plate 1, the second connecting member 27 is slidably connected between the two guide rods 28, the second connecting member 27 is threadedly connected to the first screw 211, and the first rack 24 is fixedly connected to the bottom plate 1. Connected to the front and rear ends of the second connecting member 27, the first rotating rod 29 is rotatably connected to the first connecting plate 12, the first gear 23 is fixedly connected to the outer end of the first rotating rod 29, the first gear 23 is meshed with the first rack 24, the rotating plate 25 is fixedly connected to the inner end of the first rotating rod 29, the rotating plate 25 is squeezed and matched with the display outer screen 110, the first connecting block 26 is fixedly connected between the two rotating plates 25, the first connecting block 26 is located on the right side of the rotating plate 25, the suction cup 22 is fixedly connected to the upper left of the first connecting block 26, the vacuum pump 21 is fixedly connected to the right side of the suction cup 22, the air pipe 2 is connected between the suction cup 22 and the vacuum pump 21, and the air pipe 2 connects the suction cup 22 and the vacuum pump 21.

[0036] When the touch display screen needs to be vacuum-bonded, the inner display screen 18 and the outer display screen 110 need to be simply bonded first. When the outer display screen 110 is simply bonded to the inner display screen 18, the inner display screen 18 needs to be snapped into the positioning mold 114 for positioning to ensure that the outer display screen 110 can be accurately bonded to the inner display screen 18. Then, the flexible circuit board located on the right side of the outer display screen 110 is inserted from the hole above the inner display screen 18. The flexible circuit board will pass through the hole and out from under the inner display screen 18. The outer display screen 110 is turned over to the inner display screen 18. Finally, the outer display screen 110 is lightly pressed so that the outer display screen 110 is bonded to the inner display screen 18. In this way, the simple bonding of the display screen can be achieved. First, the staff First, the inner display screen 18 is snapped into the positioning mold 114, and then the handle of the blocking plate 11 is pulled to the left, the blocking plate 11 will move to the left, and the pressure spring 14 will be compressed at this time. The movement of the blocking plate 11 will drive the first connecting member 16 to move to the left, and the movement of the first connecting member 16 to the left will drive the telescopic rod to move to the left in the slide groove of 11. Because the side of the first connecting member 16 away from the first connecting plate 12 is an inclined surface inclined outward, during the movement of the first connecting member 16 to the left, the inclined surface of the first connecting member 16 will squeeze the fixing member 17, and under the squeezing action of the inclined surface of the first connecting member 16, the fixing member 17 moves outward, and the movement of the fixing member 17 will drive the first connecting plate 12 to move outward, and the movement of the first connecting plate 12 outward will compress the reset spring 1 5. At this time, the area of ​​the fixed frame surrounded by the second connecting plate 19, the blocking plate 11 and the first connecting plate 12 symmetrically arranged front and back will become larger. Then, the positioning mold 114 with the display inner screen 18 can be placed on the support 111, so that one edge of the positioning mold 114 is aligned with the left side of the second connecting plate 19. Then, the handle of the blocking plate 11 is released, and the pressure spring 14 will extend from the compressed state. The extension of the pressure spring 14 will drive the blocking plate 11 to move rightward and reset. The blocking plate 11 will gradually contact and squeeze the positioning mold 114 when moving rightward. Because of the setting of the air valve 13, the air valve 13 will slow down the speed of the blocking plate 11 moving rightward, so as to avoid the blocking plate 11 from moving rightward quickly and causing an impact on the display inner screen 18, and the display inner screen 18 will be displayed. 18 is damaged, the blocking plate 11 moves to the right and also drives the first connecting member 16 to move to the right, and the first connecting member 16 drives the telescopic rod to move to the right on the slide groove of the first connecting plate 12. In the process of moving to the right, the first connecting member 16 no longer squeezes the fixing member 17, and the compressed return spring 15 stretches at this time, and the elongation of the return spring 15 drives the first connecting plate 12 to move inward, and the inward movement of the first connecting plate 12 squeezes the front and rear sides of the positioning mold 114, and because the blocking plate 11 moves slowly to the right, the first connecting member 16 also moves slowly to the right, and the first connecting member 16 slowly separates from the fixing member 17, so the reset of the return spring 15 is also slow, and the first connecting plate 12 moves slowly inward.To prevent the first connecting plate 12 from moving quickly inward and causing impact on the display inner screen 18, causing damage to the display inner screen 18, the blocking plate 11 will squeeze the left side of the positioning mold 114 to the right, and the first connecting plate 12 will squeeze the front and rear sides of the positioning mold 114. The right side of the first connecting plate 12 is tightly attached to the second connecting plate 19. Under the joint action of the blocking plate 11, the first connecting plate 12 and the second connecting plate 19, the positioning mold 114 will be stuck in the fixed frame, and then the flexible printed circuit board fixedly connected to the right side of the outer screen can be aligned with the hole of the display inner screen 18, and then the flexible printed circuit board can be vertically passed through the hole above the inner screen 18, and the flexible printed circuit board will pass through from the bottom of the display inner screen 18, and then the display outer screen 110 will be attached to the suction cup 22, so that The lower end of the display outer screen 110 contacts the top of the display inner screen 18, and the vacuum pump 21 is controlled to extract the air inside the suction cup 22 to generate a pressure difference between the inside and the outside. Under the action of the pressure, the display outer screen 110 will be tightly attached to the suction cup 22, and the control motor 210 drives the first screw 211 to rotate. The rotation of the first screw 211 will drive the second connecting member 27 to move downward, and the downward movement of the second connecting member 27 will drive the first rack 24 to move downward. The downward movement of the first rack 24 will drive the first gear 23 to rotate, and the rotation of the first gear 23 will drive the first rotating rod 29 to rotate. The rotation of the first rotating rod 29 will drive the rotating plate 25 to rotate counterclockwise, and the rotating plate 25 will drive the first connecting block 26 to rotate counterclockwise, and the first connecting block 26 will also drive the suction cup 22 to rotate counterclockwise. , thereby driving the display outer screen 110 to rotate counterclockwise. The counterclockwise rotation of the display outer screen 110 will lightly stick to the top of the display inner screen 18. At this time, the vacuum pump 21 is controlled to pass air into the suction cup 22, so that the suction cup 22 no longer adsorbs the display outer screen 110. Then the motor 210 will drive the first screw 211 to rotate in the opposite direction to the previous direction. The rotation of the first screw 211 will drive the second connecting member 27 to move upward and reset. The second connecting member 27 will drive the first rack 24 to move upward and reset. The upward movement of the first rack 24 will drive the first gear 23 to rotate in the opposite direction to the previous direction. The rotation of the first gear 23 will cause the first rotating rod 29 to rotate. The rotation of the first rotating rod 29 will drive the rotating plate 25 to rotate clockwise and reset, because at this time the suction cup 22 no longer adsorbs the display inner screen 110. The outer display screen 110 is adsorbed, and the rotating plate 25 rotates clockwise to drive the first connecting block 26 and the suction cup 22 to rotate clockwise to reset. After the suction cup 22 rotates clockwise to reset, the staff can gently press the outer display screen 110 located above the inner display screen 18 with their hands, so that the outer display screen 110 is attached to the inner display screen 18. The simple bonding of the display screen is completed through the above operation, and then the handle of the blocking plate 11 can be moved again, and the blocking plate 11 moves to the left, so that the first connecting plate 12 moves outward, and the area of ​​the fixed frame will increase. At this time, the simply bonded display screen can be taken out and put into the vacuum bonding machine for vacuum bonding. In this way, the inner and outer screens can be accurately positioned, and the outer display screen 110 can be turned over to the top of the inner display screen 18.The rotation speed of the first screw 211 can also be controlled so that the outer display screen 110 can be slowly rotated and flipped onto the inner display screen 18, thereby preventing the outer display screen 110 from being damaged due to rapid flipping.

[0037] Embodiment 2: Based on embodiment 1, Figure 8-Figure 10 As shown, it also includes a tensioning mechanism for pulling down the flexible printed circuit board, the tensioning mechanism includes a first connecting rod 3, a sliding frame 31, a fixed rod 32, a guide block 33, a first roller 34, a second gear 35, a second screw 36, a telescopic column 37, a third screw 38, a second roller 39, a second rack 310, a fixed block 311 and a telescopic spring 312, the first connecting rod 3 is fixedly connected to the second connecting member 27 on the side away from the second connecting plate 19, a wedge block is arranged below the first connecting rod 3, and both fixed rods 32 are sliding The sliding frame 31 is connected to the square groove of the second connecting plate 19, and the sliding frame 31 is fixedly connected between the two fixed rods 32. Two slideways are provided on the bottom plate 1, and a guide rod is fixedly connected in the slideway. The sliding frame 31 is slidably connected to the guide rod. The wedge block under the first connecting rod 3 is squeezed and matched with the sliding frame 31. The telescopic spring 312 is wound on the guide rod. One end of the telescopic spring 312 is fixedly connected to the sliding frame 31, and the other end of the telescopic spring 312 is fixedly connected to the guide rod. The guide block 33 is fixedly connected to the left side of the second connecting plate 19. The guide block 33 is located below the inner display screen 18, and the guide block 33 is pressed and matched with the flexible printed circuit board connected to the outer display screen 110. The guide block 33 is an inclined surface inclined to the lower left. The second screw 36 is rotatably connected to the two fixed rods 32. The two second gears 35 are fixedly connected to the second screw 36. The first roller 34 is fixedly connected to the middle of the second screw 36. The first roller 34 is pressed and matched with the flexible printed circuit board. The two second racks 310 are respectively fixedly connected to the left side of the second connecting plate 19. The second rack 3 10 is meshed with the second gear 35, the fixed blocks 311 are fixedly connected to the bottom of the second rack 310, the third screw 38 is threadedly connected between the two fixed blocks 311 symmetrically arranged front and back, the second roller 39 is fixedly connected to the third screw 38, the second roller 39 is extruded and matched with the flexible printed circuit board, and the two telescopic columns 37 are arranged between the second screw 36 and the third screw 38, one end of the telescopic column 37 is threadedly connected to the second screw 36, and the other end of the telescopic column 37 is threadedly connected to the third screw 38.

[0038] According to the foregoing, the flexible printed circuit board needs to be inserted into the display inner screen 18, and the flexible printed circuit board will pass through the display inner screen 18. At this time, the flexible printed circuit board can be pulled downward to make the display inner screen 18 and the display outer screen 110 fit more closely. When the flexible printed circuit board is inserted downward into the hole of the display inner screen 18, the flexible printed circuit board moves downward and contacts the guide block 33. Because the guide block 33 is an inclined surface inclined to the lower left, the flexible printed circuit board will slide along the guide block 33 to between the first roller 34 and the second roller 39. At this time, the motor 210 can be started, and the motor 210 will drive the first screw 211 to rotate. The rotation of the first screw 211 will drive the second connecting member 27 to move downward, and the first connecting rod 3 will also move downward. During the downward movement of the connecting rod 3, the wedge block under the first connecting rod 3 will squeeze the sliding frame 31. Under the squeezing action of the wedge block, the sliding frame 31 will move to the right, and the sliding frame 31 will drive the fixed rod 32 to move to the right. At this time, the telescopic spring 312 will be compressed, and the movement of the fixed rod 32 will drive the first roller 34 and the second gear 35 to move to the right. Because the second gear 35 and the second rack 310 are meshed, the second gear 35 moves to the right and drives the second gear 35 to rotate. The rotation of the second gear 35 drives the second screw 36 to rotate. The rotation of the second screw 36 drives the first roller 34 to rotate. The rotation of the second screw 36 drives the telescopic column 37 to move inward. The inward movement of the telescopic column 37 drives the third screw 38 to rotate. The rotation of the third screw 38 The second roller 39 will also be driven to rotate, and when the second screw rod 36 moves to the right, the telescopic end of the telescopic column 37 will shrink. When the first roller 34 moves to the right, the first roller 34 and the second roller 39 will both rotate. Because the first roller 34 and the second roller 39 will squeeze the flexible printed circuit board, under the joint action of the first roller 34 and the second roller 39, the flexible printed circuit board will be pulled downward by the first roller 34 and the second roller 39. After the flexible printed circuit board is pulled, the first screw rod 211 is driven by the motor 210 to rotate in the opposite direction to the previous direction. The rotation of the first screw rod 211 will drive the first connecting rod 3 to move upward and reset. The first connecting rod 3 drives the wedge block to move upward, and the wedge block no longer moves upward The sliding frame 31 is squeezed, and the compressed telescopic spring 312 is extended. The extension of the telescopic spring 312 will drive the sliding frame 31 to move leftward. The movement of the sliding frame 31 to the left will drive the fixing rod 32 to move leftward. The fixing rod 32 will drive the second screw 36 to move leftward as well. The second rack 310 will continue to drive the second gear 35 to rotate. The rotation of the second gear 35 will drive the second screw 36 to rotate in the opposite direction. The rotation of the second screw 36 will drive the telescopic column 37 to move outward and reset. The telescopic end of the telescopic column 37 will extend, and the first roller 34 will gradually separate from the flexible printed circuit board by moving to the left. The first roller 34 and the second roller 39 will no longer squeeze the flexible printed circuit board. Then the simply bonded display screen can be taken out and put into the vacuum bonding machine.In this way, when the flexible printed circuit board is inserted into the display inner screen 18, the flexible printed circuit board can be pulled to allow the display outer screen to fit on the display inner screen.

[0039] like Fig.11 and Fig.12 As shown, it also includes an adjustment mechanism for fitting the outer screen to the inner screen, the adjustment mechanism includes a second connecting block 4, a third gear 41, a third rack 42, an electric push rod 43, a pulley 44, a third connecting block 45, a second connecting rod 46, a force storage spring 47, a third connecting rod 48 and a second rotating rod 49, the two third connecting rods 48 are respectively fixedly connected to the front and rear sides of the sliding frame 31, the second connecting rod 46 is respectively fixedly connected to the end of the third connecting rod 48 away from the sliding frame 31, and a clamping block is provided on the left end of the second connecting rod 46, the third connecting block 45 is respectively fixedly connected to the first rack 24, the third connecting block 45 is slidably connected to the second connecting rod 46, the third racks 42 vertically symmetrical along the blocking plate 11 are respectively slidably connected to the bottom plate 1, and the second connecting rods 46 is squeezed and matched with the third rack 42, the storage spring 47 is respectively wound on the third rack 42, one end of the storage spring 47 is fixedly connected to the third rack 42, and the other end of the storage spring 47 is fixedly connected to the bottom plate 1, the two second connecting blocks 4 are fixedly connected above the blocking plate 11, the second connecting blocks 4 are symmetrically arranged front and back, the second rotating rods 49 are respectively rotatably connected to the second connecting blocks 4, the third gears 41 are respectively fixedly connected to the outer ends of the second rotating rods 49, the third gears 41 and the third rack 42 are meshed with each other, the electric push rods 43 are respectively fixedly connected to one end of the second rotating rods 49 away from the third gear 41, the pulleys 44 are respectively fixedly connected to the upper right of the telescopic end of the electric push rods 43, and the pulleys 44 are squeezed and matched with the display outer screen 110.

[0040] After the display outer screen 110 is flipped onto the display inner screen 18, it is necessary to lightly press the display outer screen 110 to make the display outer screen 110 fit more closely with the display inner screen 18. As mentioned above, when the display inner screen 18 is flipped onto the display outer screen 110, it is necessary to start the motor 210, and the motor 210 will drive the first screw rod 211 to rotate. The rotation of the first screw rod 211 will drive the second connecting member 27 to move downward, and the second connecting member 27 will drive the first connecting rod 3 to move downward. The wedge block under the first connecting rod 3 will squeeze the sliding frame 31, and the sliding frame 31 will move to the right. At this time, the telescopic spring 312 is compressed, and the sliding frame 31 moves to the right, which will drive the third connecting rod 48 to move to the right. The third connecting rod 48 will drive the second connecting rod 46 to move to the right, and the second connecting rod 46 will move to the right. Part 27 will drive the first rack 24 to move downward, the movement of the first rack 24 will drive the third connecting block 45 to move downward, the downward movement of the third connecting block 45 will drive the second connecting rod 46 to move downward, the second connecting rod 46 will move both to the right and downward, and a blocking block is provided at the left end of the second connecting rod 46, so that the second connecting rod 46 will not move out from above the third rack 42, because there is a gap between the upper ends of the second connecting rod 46 and the third rack 42, and in the process of the second connecting rod 46 moving downward and contacting the third rack 42, the rotating plate 25 has covered the display outer screen 110 on the display inner screen 18, and the downward movement of the second connecting rod 46 will contact the third rack 42 and squeeze the third rack 42 downward, and the third rack 42 will move downward under the squeezing action. The third gear 41 is moved, and the third gear 41 is rotated. The rotation of the third gear 41 drives the second rotating rod 49 to rotate. The rotation of the second rotating rod 49 drives the electric push rod 43 and the pulley 44 to rotate clockwise. The pulley 44 rotates downward and gradually contacts with the display outer screen 110. At this time, the telescopic end of the electric push rod 43 can be controlled to extend. The extension of the electric push rod 43 drives the pulley 44 to lightly press the display outer screen 110. After the pressing of the display outer screen 110 is completed, the telescopic end of the electric push rod 43 is controlled to retract so that the pulley 44 no longer squeezes the display outer screen 110. The motor 210 drives the first screw 211 to rotate in the opposite direction to the previous direction. The rotation of the first screw 211 drives the second connecting member 27 to move upward, and the third connecting member 27 is rotated upward. The second connecting member 27 drives the first rack 24 to move upward, and the upward movement of the second connecting member 27 drives the first connecting rod 3 to move upward, and the wedge block under the first connecting rod 3 no longer squeezes the sliding frame 31, and the compressed telescopic spring 312 stretches, and the stretching of the telescopic spring 312 pushes the sliding frame 31 to move to the left and reset, and the sliding frame 31 drives the third connecting rod 48 to move to the left, so that the second connecting rod 46 moves to the left and resets, and the movement of the first rack 24 drives the third connecting block 45 to move upward, and the third connecting block 45 drives the second connecting rod 46 to move upward and reset, and the second connecting rod 46 moves upward and no longer squeezes the third rack 42, and the compressed storage spring 47 stretches at this time, and the stretching of the storage spring 47 drives the third rack 42 to move upward.The movement of the third rack 42 drives the third gear 41 to rotate, and the rotation of the third gear 41 drives the second rotating rod 49 to rotate in the opposite direction to the previous direction. The second rotating rod 49 drives the electric push rod 43 to rotate counterclockwise to reset, and the pulley 44 also rotates counterclockwise to reset. In this way, when the display outer screen 110 is covered on the display inner screen 18, the upper part of the display outer screen 110 can be lightly pressed to make the display outer screen 110 and the display inner screen 18 fit more closely.

[0041] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A vacuum bonding device for a large-size touch display screen, comprising a support platform (111), the support platform (111) is fixedly connected to a bottom plate (1), a positioning mold (114) is placed on the support platform (111), an inner display screen (18) is clamped in the positioning mold (114), a hole is opened on the inner display screen (18), an outer display screen (110) is bonded to the inner display screen (18), and a flexible circuit board is fixedly connected to one side of the outer display screen (110), characterized in that: The invention also comprises a second connecting plate (19), the second connecting plate (19) being fixedly connected to the bottom plate (1), a square groove being provided in the second connecting plate (19), a symmetrically arranged first connecting plate (12) being slidably connected to a side of the second connecting plate (19) close to the support platform (111), a sliding groove being provided on the first connecting plate (12), a fixing member (17) being fixedly connected to the outer side of the first connecting plate (12), a first rotating rod (29) being rotatably connected to the first connecting plate (12), the first rotating rod (29) being symmetrically arranged, and a first gear (23) being fixedly connected to the first connecting plate (12). At the outer end of a rotating rod (29), the first gear (23) and the first rack (24) are meshed with each other, the rotating plate (25) is fixedly connected to the inner end of the first rotating rod (29), the rotating plate (25) is pressed and matched with the display outer screen (110), the sliding component is arranged on the bottom plate (1), the sliding component is used to push the positioning mold (114), the driving component is fixedly connected to the bottom plate (1), the driving component is used to drive the rotating plate (25) to rotate, the adsorption component is fixedly connected between the symmetrically arranged rotating plates (25), and the adsorption component is used to adsorb the display outer screen (110).

2. A large-size touch display screen vacuum bonding device as claimed in claim 1, characterized in that: The sliding assembly comprises a fixing plate (112), the fixing plate (112) being fixedly connected to a position above the bottom plate (1) away from the second connecting plate (19), the fixing plate (112) being provided with symmetrically arranged through holes, the sliding rod (113) being slidingly connected to the fixing plate (112) through the through holes, the blocking plate (11) being fixedly connected to one end of the symmetrically arranged sliding rod (113) close to the support platform (111), the pressure spring (14) being wound around the sliding rod (113), one end of the pressure spring (14) being fixedly connected to the fixing plate (112), and the other end of the pressure spring (14) being fixedly connected to the fixing plate (112). The first connecting member (16) is fixedly connected to the blocking plate (11), the side of the first connecting member (16) away from the first connecting plate (12) is an inclined surface inclined outward, and the inclined surface is pressed and matched with the fixing member (17), the telescopic rod is slidably connected in the slide groove of the first connecting plate (12), the telescopic end of the telescopic rod is fixedly connected to the first connecting member (16), the return spring (15) is wound on the telescopic rod, one end of the return spring (15) is fixedly connected to the fixed end of the telescopic rod, and the other end of the return spring (15) is fixedly connected to the telescopic end of the telescopic rod.

3. A vacuum bonding device for a large-size touch display screen as claimed in claim 2, characterized in that: It also includes an air valve (13), which is fixedly connected to the bottom plate (1) near the fixed plate (112), and one end of the air valve (13) is fixedly connected to the blocking plate (11).

4. A vacuum bonding device for a large-size touch display screen as claimed in claim 3, characterized in that: The handle is fixedly connected to a side of the blocking plate (11) away from the second connecting plate (19) and is used to pull the blocking plate (11) to move.

5. A vacuum bonding device for a large-size touch display screen as claimed in claim 4, characterized in that: The driving assembly comprises a motor (210), the motor (210) is fixedly connected to a base plate (1), a first screw rod (211) is fixedly connected to an output shaft of the motor (210), symmetrically arranged guide rods (28) are fixedly connected to the base plate (1), a second connecting member (27) is slidably connected between the symmetrically arranged guide rods (28), the second connecting member (27) is threadedly connected to the first screw rod (211), and a first rack (24) is fixedly connected to both ends of the second connecting member (27).

6. A vacuum bonding device for a large-size touch display screen as claimed in claim 5, characterized in that: The adsorption assembly comprises a first connection block (26), the first connection block (26) is fixedly connected between symmetrically arranged rotating plates (25), the suction cup (22) is fixedly connected to the first connection block (26), the vacuum pump (21) is fixedly connected to a side of the suction cup (22) close to the second connection piece (27), the air pipe (2) is connected between the suction cup (22) and the vacuum pump (21), and the air pipe (2) connects the suction cup (22) and the vacuum pump (21).

7. A vacuum bonding device for a large-size touch display screen as claimed in claim 6, characterized in that: The tensioning mechanism comprises a fixed rod (32), the symmetrically arranged fixed rod (32) is slidably connected in a square groove of a second connecting plate (19), a guide block (33) is fixedly connected to a side of the second connecting plate (19) away from the first screw (211), the guide block (33) is extruded and matched with a flexible printed circuit board connected to the display outer screen (110), a second screw (36) is rotatably connected to the symmetrically arranged fixed rod (32), a symmetrically arranged second gear (35) is fixedly connected to the second screw (36), a first roller (34) is fixedly connected in the middle of the second screw (36), the first roller (34) is extruded and matched with the flexible printed circuit board, a symmetrically arranged second rack (310) is fixedly connected to a side of the second connecting plate (19) close to the first roller (34), and the second rack (310) is extruded and matched with the flexible printed circuit board. ) is meshed with the second gear (35), the fixed block (311) is fixedly connected to the bottom of the second rack (310), the third screw (38) is threadedly connected between the symmetrically arranged fixed blocks (311), the second roller (39) is fixedly connected to the third screw (38), the second roller (39) is extruded and matched with the flexible printed circuit board, the telescopic column (37) is arranged between the second screw (36) and the third screw (38), the telescopic column (37) is symmetrically arranged along the first roller (34), one end of the telescopic column (37) is threadedly connected to the second screw (36), and the other end of the telescopic column (37) is threadedly connected to the third screw (38), the pulling component is arranged above the bottom plate (1), the pulling component is fixedly connected to the fixed rod (32), and the pulling component is used to pull the fixed rod (32).

8. A vacuum bonding device for a large-size touch display screen as claimed in claim 7, characterized in that: The pulling assembly comprises a first connecting rod (3), the first connecting rod (3) being fixedly connected to a side of the second connecting member (27) away from the second connecting plate (19), a wedge block being arranged at the bottom of the first connecting rod (3), a sliding frame (31) being fixedly connected between symmetrically arranged fixed rods (32), a symmetrically arranged slideway being provided on the bottom plate (1), a guide rod being fixedly connected in the slideway, the sliding frame (31) being slidably connected to the guide rod, the wedge block at the bottom of the first connecting rod (3) being pressed and fitted with the sliding frame (31), a telescopic spring (312) being wound on the guide rod, one end of the telescopic spring (312) being fixedly connected to the sliding frame (31), and the other end of the telescopic spring (312) being fixedly connected to the guide rod.

9. A vacuum laminating device for a large-size touch display screen as claimed in claim 8, characterized in that: The invention also includes an adjustment mechanism for fitting the outer screen onto the inner screen, the adjustment mechanism including a third rack (42), the third rack (42) vertically symmetrically arranged along the blocking plate (11) is slidably connected to the bottom plate (1), a force storage spring (47) is wound on the symmetrically arranged third rack (42), one end of the force storage spring (47) is fixedly connected to the third rack (42), the other end of the force storage spring (47) is fixedly connected to the bottom plate (1), and a symmetrically arranged second connecting block (4) is fixedly connected to the blocking plate (11), the second connecting block (4) is vertically symmetrically arranged along the blocking plate (11), and the second connecting block (4) is fixedly connected to the blocking plate (11). The rotating rod (49) is rotatably connected to the second connecting block (4); the third gear (41) is fixedly connected to the outer end of the second rotating rod (49); the third gear (41) and the third rack (42) are meshed with each other; the electric push rod (43) is fixedly connected to the end of the second rotating rod (49) away from the third gear (41); the pulley (44) is fixedly connected to the telescopic end of the electric push rod (43) close to the rotating plate (25); the pulley (44) is pressed and matched with the display outer screen (110); the pressing component is fixedly connected to the first rack (24); the pressing component is used to press down the third rack (42).

10. A vacuum laminating device for a large-size touch display screen as claimed in claim 9, characterized in that: The pressing assembly includes a third connecting rod (48), the symmetrically arranged third connecting rod (48) is fixedly connected to both sides of the sliding frame (31), the second connecting rod (46) is fixedly connected to one end of the third connecting rod (48) away from the sliding frame (31), the second connecting rod (46) is squeezed and matched with the third rack (42), a clamping block is arranged at one end of the second connecting rod (46) close to the second connecting block (4), the third connecting block (45) is fixedly connected to the first rack (24), and the third connecting block (45) is slidably connected to the second connecting rod (46).

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