A slit coating device for flexible ultra-thin glass

Abstract

The present invention discloses a slit coating device for flexible ultra-thin glass, which relates to the field of ultra-thin glass processing, and comprises: a glue storage tank, and a three-axis driving structure for driving the glue storage tank to move, wherein an assembly frame is fixedly arranged on the side wall of the glue storage tank, and the glue storage tank is equipped with a glue dripping unit through the assembly frame, and the glue dripping unit is used for continuously and evenly dripping and filling glue into the bending area of ​​the flexible ultra-thin glass, and the three-axis driving structure is a three-axis motion component commonly used in the prior art, and the glue scraping unit in the present invention can follow the glue dripping operation of the glue dripping unit, and continuously scrape and gather the excess glue at the bending area of ​​the flexible ultra-thin glass, and under the action of the glue recovery unit, the gathered excess glue can be directly returned to the inside of the glue storage tank for reuse, thereby realizing that only the glue at the glue dripping area is smoothed, avoiding large-area diffusion of the glue, and the excess glue can be gathered and recycled, and the utilization rate of the glue can be further improved.

Description

Technical Field

[0001] The invention relates to the field of ultra-thin glass processing, in particular to a slit coating device for flexible ultra-thin glass. Background Art

[0002] Flexible cover plates made of flexible ultra-thin glass are now widely used in folding screen electronic products. The flexible ultra-thin glass used for folding screens belongs to non-uniform thickness flexible ultra-thin glass, that is, the thickness at the bending part is less than the thickness at the non-bending part. Since the bending part of the flexible ultra-thin glass is thinner, the bending performance is reduced. In order to avoid this problem, it is recorded in the existing public document (CN220371482U) that a thickness detector is arranged on the coating mechanism, and the thickness detector is used to detect the thickness of the flexible ultra-thin glass. The driving module controls the descending height of the scraper according to the thickness of the flexible ultra-thin glass, so that the scraper just touches the upper surface of the flexible ultra-thin glass, avoids the gap between the scraper and the flexible ultra-thin glass, and causes the scraping effect to be poor. It also avoids the deformation of the flexible ultra-thin glass caused by the mutual extrusion between the scraper and the flexible ultra-thin glass, and the glue injection component fills the groove at the folding position of the flexible ultra-thin glass with optical glue, and finally the optical glue is flattened by the scraper, and the scraper fills the optical glue in the bending part of the flexible ultra-thin glass. After waiting for the optical glue to solidify, the bending performance of the bending part of the flexible ultra-thin glass can be improved.

[0003] In the above-mentioned public documents, the glue injection component injects liquid optical glue into the bending part of the ultra-thin flexible glass in a glue dripping manner, and then uses a scraper to scrape the optical glue flat and flush with the non-bending part of the ultra-thin flexible glass. However, since the part of the ultra-thin flexible glass that needs to be filled with glue is relatively narrow (similar to a slit), and the scraper is large in size, and in order to ensure that the dripped optical glue can effectively fill the bending part of the ultra-thin flexible glass, more glue than the volume of the part will be dripped. Therefore, during the process of scraping the optical glue flat by the large-volume scraper, there will be obvious glue overflow at the bending part of the ultra-thin flexible glass, and the amount of overflow glue will accumulate more and more. Due to the large volume of the scraper and the good fluidity of the liquid optical glue before solidification, the surface of the scraper and the non-bending part of the ultra-thin flexible glass are very easy to be attached or accumulated with optical glue, which will also cause waste of optical glue. Summary of the invention

[0004] The object of the present invention is to provide a slit coating device for flexible ultra-thin glass to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a slit coating device for flexible ultra-thin glass, comprising: a glue storage tank, and a three-axis driving structure for driving the glue storage tank to move, the side wall of the glue storage tank is fixedly provided with an assembly rack, the glue storage tank is equipped with a glue dripping unit through the assembly rack, and the glue dripping unit is used to continuously and evenly drip filling glue to the bending area of ​​the flexible ultra-thin glass, and the three-axis driving structure is a three-axis motion component commonly used in the prior art, that is, it is used to drive the glue storage tank to be able to adjust the movement in three directions: longitudinally, transversely and axially;

[0006] It also includes: a glue scraping unit, used to scrape off the glue overflowing from the bending area of ​​the flexible ultra-thin glass, and the glue scraping unit moves with the glue dripping unit;

[0007] A glue recovery unit, used for recovering the excess glue collected by the glue scraping unit into the glue storage tank;

[0008] The glue storage tank is made of copper alloy and is fixedly coated with insulation material on the outside. A resistance heating structure is also provided inside the glue storage tank. The resistance heating structure is used to maintain the internal temperature of the glue storage tank. The resistance heating structure is a resistance wire heating structure commonly used in the prior art. The resistance wires are distributed inside the glue storage tank to heat and insulate the glue storage tank made of copper alloy, so as to maintain the temperature inside the tank body and ensure that the glue liquid in the tank body is always in a fluid state.

[0009] Preferably, the glue dropping unit includes two symmetrically distributed glue injection cylinders fixedly arranged inside the assembly frame, a first piston block is slidably installed inside the glue injection cylinder, and a first piston rod that slides through the glue injection cylinder is fixedly installed on the top of the first piston block, a first delivery pipe is fixedly connected to the bottom of the glue injection cylinder, two first delivery pipes meet at one end away from the glue injection cylinder to form a port, and a glue dispensing needle is fixedly installed below the port, a second delivery pipe is fixedly connected to the outer surface of the bottom of each glue injection cylinder, and the other end of the second delivery pipe is fixedly connected to the bottom of the glue storage tank, a one-way valve and a one-way valve are respectively installed on the outer surface of each of the first delivery pipe and the second delivery pipe, and a driving component for alternately pulling the two first piston rods is also set on the top of the assembly frame, the flow direction of the one-way valve is from the glue injection cylinder to the first delivery pipe, and the flow direction of the one-way valve is from the second delivery pipe to the glue injection cylinder.

[0010] Preferably, the driving component includes a worm gear located between the two injection cylinders, and both end surfaces of the worm gear are rotatably mounted with hollow frames, the bottoms of the hollow frames are fixed to the assembly frame, two circumferentially equidistant levers are fixedly inserted inside the worm gear, and the two levers extend toward the two first piston rods respectively, a cross plate is fixedly mounted on the top of each of the first piston rods, and the first piston rod is located on the mid-vertical line of the cross plate, a straight groove is provided inside the cross plate, and the two levers are slidably inserted into the two straight grooves respectively, a driving motor is also fixedly mounted on the side wall of the glue storage tank, and the driving motor is located above the assembly frame, a worm is fixedly mounted on the output end of the driving motor, and the worm is in driving engagement with the worm gear, and when the worm gear rotates, the two cross plates can be moved up and down alternately by two circumferentially equidistant levers.

[0011] Preferably, the circumscribed circle radius of the two levers is smaller than the inner circle radius of the hollow sleeve, and the circumscribed circle diameter of the two levers is smaller than the length of the straight groove, so as to ensure that the levers will not get stuck when following the movement of the worm wheel.

[0012] Preferably, the scraper unit comprises a first bracket fixedly mounted below the glue storage tank, and two sliding rods are slidably inserted inside the first bracket, an extension block is fixedly arranged at the bottom of each sliding rod, the extension block and the sliding rod are vertically distributed, and a scraper is fixedly arranged at one end of the two extension blocks away from the sliding rod, and a first spring is mounted on the outer surface of each sliding rod, and the two ends of the first spring are respectively fixed to the first bracket and the extension block;

[0013] The scraper includes a straight plate portion and a curled portion, the straight plate portion is inclined, and the curled portion is fixedly arranged at one end of the straight plate portion. The inclined straight plate portion can guide the scraped glue liquid to the curled portion and allow the glue liquid to gather at the center of the curled portion.

[0014] Preferably, the glue recovery unit is fixedly arranged on a suction head at the upper end of the curling portion, and the suction port of the suction head faces the bottom of the curling portion, a second bracket is fixedly arranged on the side of the first bracket away from the scraper, and a transfer cylinder is fixedly arranged at the top center of the second bracket, a second piston block is slidably mounted inside the transfer cylinder, a second piston rod that slides through the transfer cylinder is fixedly arranged at the bottom of the second piston block, and a third spring is fixedly arranged on the top of the second piston block, a third delivery pipe is fixedly connected between the bottom of the transfer cylinder and the top of the suction head, and a fourth delivery pipe is fixedly connected between the transfer cylinder and the top of the glue storage tank, the outside of the third delivery pipe and the fourth delivery pipe are respectively equipped with a one-way valve and a one-way valve, and a trigger component for pushing the second piston rod is also arranged inside the second bracket, the flow direction of the one-way valve is from the suction head to the transfer cylinder, and the flow direction of the one-way valve is from the transfer cylinder to the glue storage tank.

[0015] Preferably, the trigger component includes two sliding blocks slidably assembled in opposite directions inside the second bracket, the transfer cylinder is located between the two sliding blocks, a rotating shaft is rotatably arranged between the two sliding blocks, and a second spring is fixedly arranged between one end of the sliding block close to the transfer cylinder and the second bracket, two symmetrically distributed pressure wheels are fixedly mounted on the outer surface of the rotating shaft, cams are fixedly mounted on the facing end surfaces of the two pressure wheels, a connecting plate is fixedly mounted on the bottom of the second piston rod, and both ends of the connecting plate are placed directly above the two cams, wherein a plurality of rubber pads equidistantly distributed around the circumference are fixedly mounted on the outer surface of the pressure wheel, and the friction between the pressure wheel and the surface of the flexible ultra-thin glass can be increased by the rubber pads.

[0016] Preferably, one end of the fourth delivery pipe away from the transfer cylinder extends toward the interior from the outer top of the glue storage tank, and a defoaming component for removing bubbles from the recovered glue liquid is provided below the end of the fourth delivery pipe extending into the glue storage tank, the defoaming component includes two fixing seats fixedly mounted on the top of the glue storage tank, the output end of the driving motor is the symmetry center of the two fixing seats, a positioning pin is fixedly installed between the two fixing seats, and the outer surface of the positioning pin is axially slidably sleeved with a sleeve column, the outer surface of the sleeve column is fixedly provided with a guide plate, the guide plate is inclined and movably extended into the interior of the glue storage tank, and the guide plate is directly below the end of the fourth delivery pipe away from the transfer cylinder, and a toggle assembly is provided between the sleeve column and the driving motor, the glue liquid delivered into the glue storage tank by the fourth delivery pipe will drip onto the guide plate during the dripping process, and can spread the glue liquid and move it to the bottom of the glue storage tank.

[0017] Preferably, the toggle assembly includes a tension spring arranged between the two ends of the sleeve column and the two fixing seats, and the two ends of the two tension springs are fixedly assembled with the sleeve column and the fixing seat respectively, a bent rod is fixedly arranged at one end of the sleeve column away from the guide plate, and a dial wheel is fixedly sleeved on the outer surface of the output end of the drive motor;

[0018] The outer surface of the thumbwheel includes a smooth portion and a ratchet portion, and the end of the curved rod away from the sleeve column is a short plate portion, the short plate portion is parallel to the upper end surface of the glue storage tank, and the short plate portion slides against the side wall of the smooth portion. When the thumbwheel follows the rotation of the output end of the driving motor, the ratchet portion can push the curved rod laterally a small distance through the short plate portion. After pushing to the maximum value, the ratchet portion is separated from the short plate portion. Under the action of two tension springs, the sleeve column and the curved rod can be quickly reset at the moment the ratchet portion is separated from the short plate portion, thereby achieving a vibration effect.

[0019] Preferably, the guide plate is made of metallic copper, and the outer sleeve of the sleeve column and the fixing seat is provided with a protective cover for protection, and the outside of the protective cover and the top of the glue storage tank are respectively provided with a first slot and a second slot for moving the curved rod and the guide plate. Since there is a certain amount of heat inside the glue storage tank, the guide plate made of metallic copper has good thermal conductivity and can heat up with the temperature inside the tank.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The glue scraping unit in the present invention can follow the glue dripping operation of the glue dripping unit, and continuously scrape and gather the excess glue at the bending area of ​​the flexible ultra-thin glass. Moreover, under the action of the glue recovery unit, the gathered excess glue can be directly returned to the inside of the glue storage tank for reuse, thereby achieving the goal of smoothing the glue at the glue dripping area only, avoiding large-area diffusion of the glue, being able to gather and recycle the excess glue, and further improving the utilization rate of the glue. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a front view of the present invention;

[0024] Figure 3 This is a schematic diagram of the position distribution structure of the glue dripping unit and the glue scraping unit of the present invention;

[0025] Figure 4 This is a schematic diagram of the internal structure of the glue injection cylinder of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the lever and the horizontal plate of the present invention;

[0027] Figure 6 This is a schematic diagram of the scraper structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of the suction head of the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the pressure wheel and the cam of the present invention;

[0030] Fig. 9 It is a schematic diagram of the structure of the thumbwheel and the crank lever of the present invention;

[0031] Fig.10 It is a schematic diagram of the guide plate structure of the present invention.

[0032] In the figure: 1, glue storage tank; 2, assembly frame; 3, glue injection cylinder; 4, first delivery pipe; 5, glue dispensing needle; 6, first piston block; 7, first piston rod; 8, horizontal plate; 9, hollow sleeve frame; 10, worm wheel; 11, worm; 12, drive motor; 13, second delivery pipe; 14, first bracket; 15, scraper; 15a, straight plate part; 15b, curling part; 16, extension block; 17, slide rod; 18, first spring; 19, transfer cylinder ; 20. Suction head; 21. Third delivery pipe; 22. Fourth delivery pipe; 23. Second bracket; 24. Sliding block; 25. Second spring; 26. Rotating shaft; 27. Pressure wheel; 28. Push rod; 29. ​​Guide plate; 30. Third spring; 31. Second piston block; 32. Second piston rod; 33. Connecting plate; 34. Cam; 35. Protective cover; 36. Push wheel; 37. Positioning pin; 38. Sleeve column; 39. Tension spring; 40. Bending rod. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figure 1-Figure 7 , a slit coating device for flexible ultra-thin glass shown in the figure comprises: a glue storage tank 1, and a three-axis driving structure for driving the glue storage tank 1 to move, a mounting frame 2 is fixedly provided on the side wall of the glue storage tank 1, and the glue storage tank 1 is equipped with a glue dripping unit through the mounting frame 2, and the glue dripping unit is used to continuously and evenly drip filling glue to the bending area of ​​the flexible ultra-thin glass, and the three-axis driving structure is a three-axis motion component commonly used in the prior art, that is, it is used to drive the glue storage tank 1 to be able to adjust the movement in three directions: longitudinally, transversely and axially;

[0035] It also includes: a glue scraping unit, which is used to scrape off the glue overflowing from the bending area of ​​the flexible ultra-thin glass, and the glue scraping unit moves with the glue dripping unit;

[0036] A glue recovery unit, used to recover the excess glue collected by the glue scraping unit into the glue storage tank 1;

[0037] The glue storage tank 1 is made of copper alloy and is fixedly coated with insulation material on the outside. A resistance heating structure is also provided inside the glue storage tank 1. The resistance heating structure is used to maintain the internal temperature of the glue storage tank 1. The resistance heating structure is a resistance wire heating structure commonly used in the prior art. The resistance wires are distributed inside the glue storage tank 1 to heat and insulate the glue storage tank 1 made of copper alloy, so as to maintain the temperature inside the tank body and ensure that the glue liquid in the tank body is always in a fluid state.

[0038] The glue dropping unit includes two symmetrically distributed glue injection cylinders 3 fixedly arranged inside the assembly frame 2, the interior of the glue injection cylinder 3 is slidably equipped with a first piston block 6, and the top of the first piston block 6 is fixedly equipped with a first piston rod 7 that slides through the glue injection cylinder 3, and the bottom of the glue injection cylinder 3 is fixedly connected with a first delivery pipe 4, the two first delivery pipes 4 meet at one end away from the glue injection cylinder 3 to form a port, and a glue dispensing needle 5 is fixedly installed below the port, and the bottom outer surface of each glue injection cylinder 3 is fixedly connected with a second delivery pipe 13, and the other end of the second delivery pipe 13 is fixedly connected to the bottom of the glue storage tank 1, and the outer surfaces of each first delivery pipe 4 and the second delivery pipe 13 are respectively provided with a one-way valve A and a one-way valve B, and a driving component for alternately pulling the two first piston rods 7 is also set on the top of the assembly frame 2, and the flow direction of the one-way valve A is one-way flow from the glue injection cylinder 3 to the first delivery pipe 4, and the flow direction of the one-way valve B is one-way flow from the second delivery pipe 13 to the glue injection cylinder 3.

[0039] The driving component includes a worm gear 10 located between the two injection cylinders 3, and both end surfaces of the worm gear 10 are rotatably fitted with a hollow sleeve frame 9, the bottom of the hollow sleeve frame 9 is fixed to the assembly frame 2, and two circumferentially equidistant levers 28 are fixedly inserted inside the worm gear 10, and the two levers 28 extend toward the two first piston rods 7 respectively, and a cross plate 8 is fixedly mounted on the top of each first piston rod 7, and the first piston rod 7 is located on the mid-vertical line of the cross plate 8, and a straight groove is opened inside the cross plate 8, and the two levers 28 are slidably inserted into the inside of the two straight grooves respectively, and a driving motor 12 is also fixedly mounted on the side wall of the glue storage tank 1, and the driving motor 12 is located above the assembly frame 2, and the output end of the driving motor 12 is fixedly fitted with a worm 11, and the worm 11 is in transmission engagement with the worm gear 10, and when the worm gear 10 rotates, it can move the two cross plates 8 up and down alternately through two circumferentially equidistant levers 28.

[0040] The circumscribed circle radius of the two levers 28 is smaller than the inner circle radius of the hollow sleeve frame 9 , and the circumscribed circle diameter of the two levers 28 is smaller than the length of the straight groove, so as to ensure that the levers 28 will not get stuck when following the movement of the worm wheel 10 .

[0041] The glue scraping unit includes a first bracket 14 fixedly hoisted below the glue storage tank 1, and two slide bars 17 are slidably inserted inside the first bracket 14, and an extension block 16 is fixedly arranged at the bottom of each slide bar 17, and the extension block 16 and the slide bar 17 are vertically distributed, and a scraper 15 is fixedly arranged at one end of the two extension blocks 16 away from the slide bar 17, and a first spring 18 is set on the outer surface of each slide bar 17, and the two ends of the first spring 18 are respectively fixed to the first bracket 14 and the extension block 16;

[0042] The scraper 15 includes a straight plate portion 15a and a curled portion 15b. The straight plate portion 15a is inclined, and the curled portion 15b is fixedly arranged at one end of the straight plate portion 15a. The inclined straight plate portion 15a can guide the scraped glue to the curled portion 15b and let the glue gather at the center of the curled portion 15b.

[0043] Working principle: Before the glue dispensing operation, the flexible ultra-thin glass is first fixed on the workbench, and then the glue dispensing needle 5 is placed just above the bending area of ​​the flexible ultra-thin glass through the three-axis driving structure. After the adjustment is completed, the driving motor 12 can be started to squeeze the glue from the bottom of the glue dispensing needle 5, and at the same time drive the glue dispensing needle 5 to move horizontally along the bending area of ​​the flexible ultra-thin glass;

[0044] The driving motor 12 can rotate the worm gear 10 with the two levers 28 through the engagement of the worm 11 and the worm wheel 10, so that the two first piston rods 7 move up and down alternately. The purpose of the alternating up and down movement is to allow the glue to drip evenly and uninterruptedly through the dispensing needle 5.

[0045] It should be noted that when the glue dispensing needle 5 moves to the correct position, the glue storage tank 1 will press the scraper 15 against the upper end surface of the flexible ultra-thin glass and make the first spring 18 in a compressed state, thereby better ensuring the stability of the scraper 15 and the flexible ultra-thin glass. When the glue dispensing needle 5 is moving, the scraper 15 will also move with it, and the glue dripped into the bending area of ​​the flexible ultra-thin glass will be smoothed through the straight plate part 15a. Since the straight plate part 15a is inclined, the excess glue can be guided to the inside of the curling part 15b, thereby avoiding the surface of the flexible ultra-thin glass where the excess glue is randomly distributed, thereby avoiding unnecessary cleaning burden.

[0046] Example 2: Please refer to Figure 2 , Figure 6-Figure 8, this embodiment is a further description of the first embodiment, the glue recovery unit is fixedly arranged on the suction head 20 at the upper end of the curling portion 15b, and the suction port of the suction head 20 faces the bottom of the curling portion 15b, the first bracket 14 is fixedly arranged on the side away from the scraper 15, and the top center of the second bracket 23 is fixedly arranged with a transfer cylinder 19, the interior of the transfer cylinder 19 is slidably mounted with a second piston block 31, the bottom of the second piston block 31 is fixedly arranged with a second piston rod 32 that slides through the transfer cylinder 19, and the top of the second piston block 31 is fixedly arranged A third spring 30 is provided, a third delivery pipe 21 is fixedly provided between the bottom of the transfer cylinder 19 and the top of the suction head 20, and a fourth delivery pipe 22 is fixedly provided between the transfer cylinder 19 and the top of the glue storage tank 1, and the outsides of the third delivery pipe 21 and the fourth delivery pipe 22 are respectively equipped with a one-way valve C and a one-way valve D, and the interior of the second bracket 23 is also provided with a trigger component for pushing the second piston rod 32, the flow direction of the one-way valve C is one-way flow from the suction head 20 to the transfer cylinder 19, and the flow direction of the one-way valve D is one-way flow from the transfer cylinder 19 to the glue storage tank 1.

[0047] The trigger component includes two sliding blocks 24 that are slidably assembled inside the second bracket 23 and are distributed opposite to each other. The transfer cylinder 19 is located between the two sliding blocks 24. A rotating shaft 26 is rotatably arranged between the two sliding blocks 24, and a second spring 25 is fixedly arranged between one end of the sliding block 24 close to the transfer cylinder 19 and the second bracket 23. Two symmetrically distributed pressure wheels 27 are fixedly mounted on the outer surface of the rotating shaft 26. Cams 34 are fixedly mounted on the facing end surfaces of the two pressure wheels 27. A connecting plate 33 is fixedly mounted on the bottom of the second piston rod 32, and both ends of the connecting plate 33 are placed directly above the two cams 34. A plurality of rubber pads equidistantly distributed around the circumference are fixedly mounted on the outer surface of the pressure wheel 27. The rubber pads can increase the friction between the pressure wheel 27 and the surface of the flexible ultra-thin glass.

[0048] In this embodiment: In this solution, refer to Figure 2 The horizontal section of the lower end of the pressure wheel 27 is lower than the bottom surface of the scraper 15, that is, when the scraper 15 can effectively rest on the surface of the flexible ultra-thin glass, the pressure wheel 27 can also be elastically pressed on the upper end surface of the flexible ultra-thin glass under the action of the second spring 25, and the pressure wheel 27 will shorten the distance between the cam 34 and the connecting plate 33 during the process of being pressed down, so that when the glue storage tank 1 is moving, when the pressure wheel 27 rolls on the surface of the flexible ultra-thin glass, it can frequently push the connecting plate 33 through the cam 34, and cooperate with the action of the third spring 30 to allow the second piston block 31 to move up and down inside the transfer cylinder 19, so that the excess glue liquid gathered inside the curling part 15b can be sucked through the suction head 20 and transported to the inside of the glue storage tank 1, thereby realizing the recovery of excess glue liquid without waste, avoiding the glue liquid accumulating in the curling part 15b and overflowing and spreading everywhere, and also improving the effective utilization rate of the glue liquid.

[0049] Example 3: Please refer to Figure 8-Figure 10 This embodiment is a further explanation of other embodiments. The end of the fourth delivery pipe 22 away from the transfer cylinder 19 extends from the outer top of the glue storage tank 1 toward the inside, and a defoaming component for removing bubbles from the recycled glue liquid is also provided below the end of the fourth delivery pipe 22 extending into the glue storage tank 1. The defoaming component includes two fixed seats fixedly mounted on the top of the glue storage tank 1, and the output end of the drive motor 12 is the symmetrical center of the two fixed seats. A positioning pin 37 is fixedly installed between the two fixed seats, and the positioning pin 3 The outer surface of 7 is axially slidably sleeved with a sleeve column 38, and the outer surface of the sleeve column 38 is fixedly provided with a guide plate 29, which is inclined and movable to extend into the interior of the glue storage tank 1, and the guide plate 29 is located directly below the end of the fourth delivery pipe 22 away from the transfer cylinder 19, and a toggle assembly is also provided between the sleeve column 38 and the drive motor 12. The glue liquid transported into the glue storage tank 1 by the fourth delivery pipe 22 will drip onto the guide plate 29 during the dripping process, which can spread the glue liquid and then move it to the bottom of the glue storage tank 1.

[0050] The toggle assembly includes a tension spring 39 disposed between the two ends of the sleeve column 38 and the two fixed seats, and the two ends of the two tension springs 39 are fixedly assembled with the sleeve column 38 and the fixed seats respectively, and a bent rod 40 is fixedly disposed at one end of the sleeve column 38 away from the guide plate 29, and a dial wheel 36 is fixedly sleeved on the outer surface of the output end of the drive motor 12;

[0051] The outer surface of the dial 36 includes a smooth portion and a ratchet portion, and the end of the curved rod 40 away from the sleeve 38 is a short plate portion. The short plate portion is parallel to the upper end surface of the glue storage tank 1, and the short plate portion slides against the side wall of the smooth portion. When the dial 36 follows the rotation of the output end of the drive motor 12, the ratchet portion can push the curved rod 40 laterally a small distance through the short plate portion. After pushing to the maximum value, the ratchet portion is separated from the short plate portion. Under the action of the two tension springs 39, the moment the ratchet portion is separated from the short plate portion, the sleeve 38 and the curved rod 40 can be quickly reset, thereby achieving a vibration effect.

[0052] The guide plate 29 is made of metal copper, and the outer sleeve of the sleeve column 38 and the fixed seat is provided with a protective cover 35 for protection, and the outside of the protective cover 35 and the top of the glue storage tank 1 are respectively provided with a first slot and a second slot for the movement of the curved rod 40 and the guide plate 29. Since there is a certain amount of heat inside the glue storage tank 1, the guide plate 29 made of metal copper has good thermal conductivity and can heat up with the temperature inside the tank.

[0053] In this embodiment: the glue liquid sucked into the glue storage tank 1 will drip onto the guide plate 29. Since the glue liquid drips from above, the gravitational potential energy will be converted into kinetic energy, so that the glue liquid will be smeared on the guide plate 29. In addition, the dial wheel 36 is driven by the output end of the drive motor 12, and cooperates with the action of the tension spring 39 to allow the sleeve 38 to carry the guide plate 29 to frequently vibrate laterally. The lateral vibration can make the glue liquid smear more fully. Because there will be a large number of bubbles in the recovered glue liquid, if the bubbles are not treated, they will be output to the bending area of ​​the flexible ultra-thin glass later. The presence of bubbles will reduce the filling density. For this reason, when the recovered glue liquid is dripped into the glue storage tank 1 and mixed with the glue liquid in the tank, it needs to be defoamed. After the glue liquid dripping on the guide plate 29 is fully smeared, the mixed bubbles therein can be quickly ruptured. Moreover, the guide plate 29 made of metal copper can also absorb the heat in the glue storage tank 1. When the temperature of the guide plate 29 is slightly increased, the rupture rate of the bubbles in the glue liquid can also be accelerated.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A slit coating device for flexible ultra-thin glass, characterized in that: include: A glue storage tank (1), and a three-axis driving structure for driving the glue storage tank (1) to move, wherein an assembly rack (2) is fixedly arranged on the side wall of the glue storage tank (1), and the glue storage tank (1) is equipped with a glue dripping unit through the assembly rack (2), and the glue dripping unit is used to continuously and evenly drip filling glue into the bending area of ​​the flexible ultra-thin glass; Also includes: A glue scraping unit, used for scraping glue overflowing from the bending area of ​​the flexible ultra-thin glass, wherein the glue scraping unit moves following the glue dripping unit; A glue recovery unit, used for recovering excess glue collected by the glue scraping unit into the glue storage tank (1); The glue storage tank (1) is made of copper alloy and is fixedly coated with a heat-insulating material on the outside. A resistance heating structure is also provided inside the glue storage tank (1), and the resistance heating structure is used to maintain the internal temperature of the glue storage tank (1); The glue drop unit comprises two symmetrically distributed glue injection cylinders (3) fixedly arranged inside the assembly frame (2), the glue injection cylinder (3) being slidably equipped with a first piston block (6), and a first piston rod (7) slidingly penetrating the glue injection cylinder (3) being fixedly arranged on the top of the first piston block (6), and a first delivery pipe (4) being fixedly arranged at the bottom of the glue injection cylinder (3), and the two first delivery pipes (4) meeting at one end away from the glue injection cylinder (3) to form a port, and a glue dispensing needle (5) being fixedly arranged below the port, and a second delivery pipe (13) being fixedly arranged on the outer surface of the bottom of each glue injection cylinder (3), and the other end of the second delivery pipe (13) being fixedly connected to the bottom of the glue storage tank (1), and a one-way valve A and a one-way valve B being respectively mounted on the outer surface of each first delivery pipe (4) and the second delivery pipe (13), and a driving component for alternately pulling the two first piston rods (7) is also arranged on the top of the assembly frame (2); The driving component comprises a worm wheel (10) located between the two injection cylinders (3), and both end surfaces of the worm wheel (10) are rotatably sleeved with a hollow sleeve frame (9), the bottom of the hollow sleeve frame (9) is fixed to the assembly frame (2), and two shifting rods (28) are fixedly inserted inside the worm wheel (10) and are equidistant from the circumference, and the two shifting rods (28) extend toward the two first piston rods (7) respectively, and each of the first piston rods (7) is fixedly provided with a cross plate (8) on the top. ), and the first piston rod (7) is located on the mid-vertical line of the horizontal plate (8), a straight groove is provided inside the horizontal plate (8), and the two shifting rods (28) are respectively slidably inserted into the insides of the two straight grooves, and the side wall of the glue storage tank (1) is also fixedly mounted with a drive motor (12), and the drive motor (12) is located above the assembly frame (2), and the output end of the drive motor (12) is fixedly sleeved with a worm (11), and the worm (11) is drivingly engaged with the worm wheel (10); The glue scraping unit comprises a first bracket (14) fixedly mounted below the glue storage tank (1), and two sliding rods (17) are slidably inserted inside the first bracket (14), and an extension block (16) is fixedly arranged at the bottom of each sliding rod (17), and the extension block (16) and the sliding rod (17) are vertically distributed, and a scraper (15) is fixedly arranged at one end of the two extension blocks (16) away from the sliding rod (17), and a first spring (18) is sleeved on the outer surface of each sliding rod (17), and the two ends of the first spring (18) are respectively fixed to the first bracket (14) and the extension block (16); The scraper (15) comprises a straight plate portion (15a) and a curled portion (15b), the straight plate portion (15a) is inclined, and the curled portion (15b) is fixedly arranged at one end of the straight plate portion (15a); The glue recovery unit is fixedly provided with a suction head (20) at the upper end of the curled portion (15b), and the suction port of the suction head (20) faces the bottom of the curled portion (15b); a second bracket (23) is fixedly provided on the side of the first bracket (14) away from the scraper (15), and a transfer cylinder (19) is fixedly provided at the top center of the second bracket (23); a second piston block (31) is slidably mounted inside the transfer cylinder (19), and a second piston block (31) is fixedly provided at the bottom of the second piston block (31) and slides through the transfer cylinder (19). A third spring (30) is fixedly arranged on the top of the second piston block (31), a third delivery pipe (21) is fixedly arranged between the bottom of the transfer cylinder (19) and the top of the suction head (20), and a fourth delivery pipe (22) is fixedly arranged between the transfer cylinder (19) and the top of the glue storage tank (1), a one-way valve C and a one-way valve D are respectively installed on the outside of the third delivery pipe (21) and the fourth delivery pipe (22), and a trigger component for pushing the second piston rod (32) is also arranged inside the second bracket (23).

2. The slit coating device for flexible ultra-thin glass according to claim 1, characterized in that: The circumscribed circle radius of the two shifting rods (28) is smaller than the inner circle radius of the hollow sleeve frame (9), and the circumscribed circle diameter of the two shifting rods (28) is smaller than the length of the straight groove.

3. The slit coating device for flexible ultra-thin glass according to claim 1, characterized in that: The actuating component comprises two sliding blocks (24) which are slidably assembled inside the second bracket (23) and are arranged opposite to each other. The transfer cylinder (19) is located between the two sliding blocks (24). A rotating shaft (26) is rotatably arranged between the two sliding blocks (24). A second spring (25) is fixedly arranged between one end of the sliding block (24) close to the transfer cylinder (19) and the second bracket (23). Two symmetrically distributed pressure wheels (27) are fixedly mounted on the outer surface of the rotating shaft (26). Cams (34) are fixedly arranged on the facing end surfaces of the two pressure wheels (27). A connecting plate (33) is fixedly arranged at the bottom of the second piston rod (32), and the two ends of the connecting plate (33) are placed directly above the two cams (34).

4. The slit coating device for flexible ultra-thin glass according to claim 1, characterized in that: The end of the fourth delivery pipe (22) away from the transfer cylinder (19) extends from the outer top of the glue storage tank (1) toward the inside, and a defoaming component for removing bubbles from the recycled glue liquid is also provided below the end of the fourth delivery pipe (22) extending into the glue storage tank (1), the defoaming component comprising two fixed seats fixedly mounted on the top of the glue storage tank (1), the output end of the drive motor (12) being the symmetry center of the two fixed seats, a positioning pin (37) fixedly mounted between the two fixed seats, and the outer surface of the positioning pin (37) is axially slidably sleeved with a sleeve column (38), the outer surface of the sleeve column (38) is fixedly provided with a guide plate (29), the guide plate (29) is movably extended into the glue storage tank (1) in an inclined state, and the guide plate (29) is located directly below the end of the fourth delivery pipe (22) away from the transfer cylinder (19), and a toggle assembly is also provided between the sleeve column (38) and the drive motor (12).

5. The slit coating device for flexible ultra-thin glass according to claim 4, characterized in that: The toggle assembly comprises a tension spring (39) arranged between two ends of the sleeve column (38) and the two fixing seats, and the two ends of the two tension springs (39) are fixedly assembled with the sleeve column (38) and the fixing seats respectively, a bent rod (40) is fixedly arranged at one end of the sleeve column (38) away from the guide plate (29), and a dial wheel (36) is fixedly sleeved on the outer surface of the output end of the drive motor (12); The outer surface of the thumbwheel (36) comprises a smooth portion and a ratchet portion, and the end of the curved rod (40) away from the sleeve column (38) is a short plate portion, the short plate portion is parallel to the upper end surface of the glue storage tank (1), and the short plate portion slides against the side wall of the smooth portion.

6. The slit coating device for flexible ultra-thin glass according to claim 5, characterized in that: The guide plate (29) is made of metal copper, and the outer part of the sleeve column (38) and the fixing seat is provided with a protective cover (35) for protection, and the outer part of the protective cover (35) and the top of the glue storage tank (1) are respectively provided with a first notch and a second notch for the movement of the curved rod (40) and the guide plate (29).

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