LED display screen silica gel packaging structure

Abstract

The invention relates to the technical field of LED display screen processing equipment, in particular to an LED display screen silica gel packaging structure, and adopts the technical scheme that the LED display screen silica gel packaging structure comprises a dispensing mechanism main body, a protective shell is fixedly mounted on the outer side of the upper end surface of the dispensing mechanism main body, the dispensing mechanism main body comprises an operation table, and a positioning assembly is movably mounted in the middle of the upper end surface of the operation table; the positioning assembly comprises a positioning plate, clamping frames are movably clamped to the two sides of the positioning plate correspondingly, dispensing grooves are formed in the positioning plate in a rectangular array mode, the size of the cross section of the bottom of each dispensing groove is larger than that of the cross section of the top of each dispensing groove, and the number of the clamping frames is two. Inserting grooves matched with the positioning plates in thickness are formed in the opposite sides of the two clamping frames. According to the invention, the accuracy and consistency of dispensing are ensured, the dispensing period is greatly shortened, the efficiency of a production line is improved, and the problems of inconsistent packaging thickness and uneven packaging surface are effectively solved, so that the yield is remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of LED display screen processing equipment, in particular to a silicone packaging structure for an LED display screen. Background Art

[0002] COB technology is an advanced LED display packaging process that involves fixing LED chips directly on circuit boards. This technology uses conductive or non-conductive glue to stick the LED chip to the interconnect substrate and uses wire bonding technology to achieve electrical connection between the chip and the circuit board. After the wire bonding is completed, fluorescent glue is applied to the LED chip to protect the chip and the wires. Subsequently, these fluorescent glues will go through a drying and curing process. In the dispensing process, a dispensing machine is usually used to precisely operate the LED chip. The dispensing machine has a three-axis linkage function, which means that it can move precisely in three dimensions to accommodate LED chips in different positions. In addition, the dispensing machine also adopts a manual teaching box programming working mode, which allows the operator to program the machine through manual teaching to achieve precise dispensing of LED chips on the substrate. This automated and precise dispensing process is essential to improving the packaging quality and production efficiency of LED displays.

[0003] After extensive searching, the publication number is CN112735285A, which discloses a packaging structure for an LED display screen based on COB technology, including a base, a horizontal slide and a support plate, the upper surface of the support plate is fixedly connected with a baffle bar, the upper surface of the support plate is movably connected with a movable bar, the surface of the support plate is fixedly connected with a fixing rod, the end of the fixing rod away from the support plate is provided with a through groove, the inner wall of the through groove is movably connected with the surface of a round rod, the surface of the round rod is provided with an elastic mechanism, and the end of the round rod away from the movable bar is fixedly connected with a limiting disk.

[0004] When the device in the existing technology is in use, by setting the baffle bar, the movable bar, the elastic mechanism and the pressure block, it is only necessary to fit the substrate to the baffle bar position, then press the movable bar against the substrate, and use bolts to fix the movable bar to fix the substrate. The operation of fixing the substrate is simple and convenient, and the effect of more convenient glue dispensing is achieved.

[0005] However, in the packaging process of LED display screens, due to the large number of LED chips on the display screen, the traditional glue dispensing method is to use a glue dispensing gun to dispense glue on the outside of each LED chip separately. After the glue dispensing is completed, the glue on adjacent LED chips is brought into contact by relying on the gravity and fluidity of the colloid itself, thereby achieving full coverage of the LED chips on the entire display screen and completing the packaging operation. However, this operation method has some problems. For example, if adjacent colloids come into contact too early in the early stage of glue dispensing, it may cause uneven packaging thickness and uneven packaging surface, thereby affecting the product yield. For this reason, a silicone packaging structure for LED display screens is proposed to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a silicone packaging structure for an LED display screen, which can effectively solve the problem mentioned in the background technology that the packaging thickness is inconsistent and the packaging surface is uneven due to premature contact of the colloid during the dispensing process, thereby affecting the yield rate.

[0007] To achieve the above object, the present invention provides the following technical solutions: a silicone packaging structure for an LED display screen, comprising a dispensing mechanism body, a protective shell is fixedly installed on the outer side of the upper end surface of the dispensing mechanism body, the front and top of the protective shell are both designed with an open structure, and a curing lamp is rotatably installed on the front of the protective shell;

[0008] The dispensing mechanism body comprises an operating table, a three-dimensional guide component is fixedly installed on the upper end surface of the operating table inside the protective shell, and a positioning component is movably installed in the middle of the upper end surface of the operating table;

[0009] The positioning assembly comprises a positioning plate, and clamping frames are movably mounted on both sides of the positioning plate, and an adjusting cylinder is fixedly mounted on the top of the clamping frame, and the top of the adjusting cylinder is rotatably connected to the three-dimensional guide assembly;

[0010] The positioning plate is provided with dispensing grooves in a rectangular array, the cross-sectional dimensions of the bottom of the dispensing grooves are larger than the cross-sectional dimensions of the top, an LED display screen is movably placed on the operating table below the positioning plate, the lower end surface of the positioning plate is in contact with the upper end surface of the LED display screen but is not fixedly connected, and the opening position of the dispensing grooves matches the installation position of the LED chip on the LED display screen;

[0011] There are two clamping frames, and an insertion slot matching the thickness of the positioning plate is opened on opposite sides of the two clamping frames. The front ends of the two clamping frames adopt an open structure design, and the rear ends of the two clamping frames adopt a closed structure design. The two clamping frames are designed with soft rubber material.

[0012] Preferably, the curing lamp is fixedly mounted with heat dissipation fins, the heat dissipation fins are made of aluminum to improve the heat dissipation efficiency of the curing lamp, the surface of the heat dissipation fins is coated with a high emissivity coating to enhance the thermal radiation effect, a limit frame is fixedly mounted on the curing lamp below the heat dissipation fins, the limit frame is in contact with the bottom of the front end of the operating table but is not fixedly connected, a holding groove is provided on the limit frame, the holding groove provided on the limit frame is designed to conform to the shape of a human palm, so that the operator can hold the curing lamp firmly for flipping operation, rotating shafts are respectively fixedly mounted on the top of both sides of the curing lamp, the two rotating shafts are respectively rotatably connected to the protective shell at opposite ends, and the curing lamp is rotatably mounted on the inner side of the front side of the protective shell through the rotating shaft.

[0013] When the above technical solution is adopted, the heat dissipation fins fixedly installed on the curing lamp are made of aluminum, which improves the heat dissipation efficiency of the curing lamp. At the same time, the surface of the heat dissipation fins is coated with a high-emissivity coating to enhance the thermal radiation effect. By improving the heat dissipation efficiency, the influence of the heat generated by the curing lamp when it is working on the curing process can be reduced, thereby improving the curing efficiency and quality. The design of the limit frame contacting with the bottom of the front end of the operating table but not fixedly connected, and the holding groove on the limit frame conforming to the shape of the human palm, allows the operator to hold the curing lamp firmly for flipping operation, thereby improving the convenience and safety of operation, and the curing lamp can be limited by the limit frame.

[0014] Preferably, the operating table includes a base plate, a reserved groove is opened in the middle of the upper end surface of the base plate, a placing table is fixedly installed on the lower end surface of the base plate, a support frame is fixedly installed on the outer side of the upper end surface of the base plate, the inner side size of the support frame is larger than the width of the positioning plate, and the upper end surface of the base plate is in contact with the bottom of the two clamping frames but is not fixedly connected.

[0015] When the above technical solution is adopted, the operating table provides a stable base through the design of the bottom plate and the support frame, ensuring the stability of the entire dispensing mechanism during operation and reducing the dispensing error caused by vibration or instability. The reserved groove opened in the middle of the upper surface of the bottom plate allows the LED display to be placed directly, saving additional space, making the entire device more compact and improving space utilization efficiency.

[0016] Preferably, the placement table is designed with a soft rubber material, and the bottom of the placement table is provided with anti-slip grooves. The anti-slip grooves of the placement table are designed as a diamond pattern to increase friction and prevent the device from sliding during the LED display screen packaging operation. The middle of the upper end surface of the placement table is embedded and installed in the reserved groove. The top height of the placement table is lower than the top height of the reserved groove. The LED display screen is movably placed on the top of the placement table in the reserved groove, and the cross-sectional size of the LED display screen matches the cross-sectional size of the reserved groove.

[0017] When the above technical solution is adopted, the anti-slip pattern of the placement table is designed as a diamond pattern to increase friction and prevent the device from sliding during the LED display screen packaging operation. At the same time, the middle of the upper end surface of the placement table is embedded in the reserved groove, which makes the placement of the LED display screen more precise and improves the accuracy of the packaging process.

[0018] Preferably, the three-dimensional guiding assembly includes a Y-axis guiding assembly, an X-axis guiding assembly, a Z-axis guiding assembly and a cross plate, and the Y-axis guiding assembly and the cross plate are fixedly connected to the top of the support frame. The three-dimensional guiding assembly also includes a control unit, and the control unit is electrically connected to the Y-axis guiding assembly, the X-axis guiding assembly and the Z-axis guiding assembly to achieve precise three-dimensional movement control.

[0019] When the above technical solution is adopted, the three-dimensional guide assembly includes a Y-axis guide assembly, an X-axis guide assembly, a Z-axis guide assembly and a cross plate, and a control unit electrically connected to these components, thereby realizing precise three-dimensional movement control, ensuring that the dispensing gun can accurately reach the corresponding position of each LED chip, and improving the accuracy and efficiency of dispensing.

[0020] Preferably, the Y-axis guide assembly includes a first connecting plate, which is fixedly mounted on the left side of the top of the operating table through a supporting frame, a first frame body is fixedly mounted on the first connecting plate, a first servo motor is fixedly mounted on one end of the first frame body, the first servo motor has high-precision control characteristics to ensure the precise movement of the X-axis guide assembly, a first lead screw is transmission-mounted on one end of the first servo motor, the first lead screw is rotatably mounted on the inner side of the first frame body, a first slider is threadedly mounted on the first lead screw, a first guide rail is fixedly mounted on the upper end surface of the first connecting plate, and the bottom middle of the first connecting plate is rotatably mounted on the top of an adjusting cylinder through a rotating seat.

[0021] When the above technical solution is adopted, the first servo motor with high-precision control characteristics in the Y-axis guide assembly ensures the precise movement of the X-axis guide assembly, improves the accuracy of the entire dispensing process, and ensures the uniformity and consistency of dispensing.

[0022] Preferably, the X-axis guide assembly includes a second connecting plate, a second frame is fixedly mounted on the second connecting plate, a second servo motor is fixedly mounted on one end of the second frame, the second servo motor can achieve fast response and precise positioning of the Z-axis guide assembly, a second lead screw is transmission-mounted on one end of the second servo motor, the second lead screw is rotatably mounted on the inner side of the second frame, a second slider is threadedly mounted on the second lead screw, a second guide rail is fixedly mounted on the second connecting plate, the bottom of the second slider is slidably connected to the second guide rail, one side of the upper end surface of the second connecting plate is fixedly connected to the bottom of the first slider, and the bottom of the second connecting plate below the first slider is slidably mounted to the first guide rail.

[0023] When the above technical solution is adopted, the second servo motor in the X-axis guide assembly can achieve rapid response and precise positioning of the Z-axis guide assembly, improve the response speed and positioning accuracy during the dispensing process, and ensure the timeliness and accuracy of dispensing.

[0024] Preferably, the Z-axis guide assembly includes a third frame, the back side of the third frame is fixedly connected to the second slider, a third servo motor is fixedly installed on the top of the third frame, a third lead screw is transmission-installed on the bottom of the third servo motor, the third lead screw is rotatably installed on the inner side of the third frame, a movable frame is threadedly installed on the third lead screw, and the third servo motor adopts closed-loop control to improve the positioning accuracy of the movable frame.

[0025] When the above technical solution is adopted, the third servo motor in the Z-axis guide assembly adopts closed-loop control, which improves the positioning accuracy of the movable frame, ensures that the dispensing gun can accurately align with each LED chip, and improves the accuracy of dispensing.

[0026] Preferably, a stepper motor is fixedly installed on the inner side of the movable frame, the transmission shaft at the bottom of the stepper motor passes through the bottom of the movable frame and is provided with a dispensing gun, an angle adjustment frame is provided on the back of the dispensing gun, and the dispensing gun is movably installed with the transmission shaft at the bottom of the stepper motor through the angle adjustment frame. The stepper motor can realize precise control of the dispensing gun to adapt to different dispensing requirements.

[0027] When the above technical solution is adopted, the stepper motor fixedly installed on the inner side of the movable frame can realize precise control of the dispensing gun to meet the dispensing requirements of different positions, improve the flexibility and adaptability of dispensing, and ensure the diversity and personalization of the dispensing process.

[0028] Preferably, the cross plate is fixedly mounted on the top right side of the operating table through a support frame, a third guide rail is fixedly mounted on the upper end surface of the cross plate, and the other side of the bottom of the second connecting plate is slidably mounted on the third guide rail. The third guide rail and the first guide rail installed on the cross plate are both made of high-strength materials to withstand the weight of the second connecting plate and the force generated during movement, and the bottom of the cross plate is rotatably connected to the top of another adjusting cylinder through a rotating seat.

[0029] When the above technical solution is adopted, the third guide rail and the first guide rail installed on the transverse plate are both made of high-strength materials to withstand the weight of the second connecting plate and the force generated during movement, thereby ensuring stability and durability during operation and improving the reliability and service life of the entire packaging structure.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The positioning assembly in the present invention includes a positioning plate and a clamping frame. The positioning plate is precisely provided with a dispensing groove that matches the installation position of the LED chip on the LED display screen. This design ensures that each LED chip has a corresponding dispensing position, thereby avoiding dispensing errors caused by inaccurate positioning. The clamping frame is connected to the three-dimensional guide assembly through an adjusting cylinder, thereby realizing the stable installation and flexible adjustment of the positioning plate. More importantly, the dispensing groove on the positioning plate adopts a special design in which the bottom cross-sectional dimension is larger than the top cross-sectional dimension. This design enables the colloid to flow naturally to the bottom of the dispensing groove during the dispensing process, forming a certain accumulation. When the positioning plate is moved up, the adjacent colloids will first contact and fuse at the bottom due to gravity, effectively reducing the generation of bubbles. At the same time, since the colloids contact and fuse from the bottom, the uniformity of the packaging thickness and the flatness of the packaging surface can be ensured, thereby greatly reducing the problems of inconsistent packaging thickness and uneven packaging surface.

[0032] The contact method between the positioning plate and the upper end surface of the LED display screen adopts a non-fixed connection design. This movable connection method not only allows the positioning plate and the LED display screen to be quickly separated after dispensing, but also enables the positioning plate to firmly clamp the LED display screen during the dispensing operation, avoiding displacement and shaking. This design can adapt to LED displays of different thicknesses, further improving the quality and yield of the package.

[0033] It is worth mentioning that the three-dimensional guide assembly includes a Y-axis guide assembly, an X-axis guide assembly, a Z-axis guide assembly and a cross plate, as well as a control unit electrically connected to these components. Together, these components achieve precise three-dimensional movement control, ensuring that the dispensing gun can accurately reach the corresponding position of each LED chip. The dispensing angle of the dispensing gun is precisely controlled by a stepper motor, further ensuring the uniformity and consistency of dispensing.

[0034] The clamping frame is made of soft rubber and is designed with open and closed structures at the front and rear ends. This design not only ensures the stability of the clamping, but also facilitates the operator to load and unload the positioning plate. The soft rubber material provides good buffering and reduces possible damage to the LED display during operation.

[0035] In summary, the use of the positioning assembly and the three-dimensional guide assembly of the present invention not only ensures the accuracy and consistency of glue dispensing, but also greatly shortens the glue dispensing cycle and improves the efficiency of the production line. In particular, the innovative design of preventing premature contact of the colloid effectively solves the problems of inconsistent packaging thickness and uneven packaging surface, thereby significantly improving the yield rate. Therefore, the present invention successfully overcomes the key problems mentioned in the background technology through its exquisite design and innovative solutions, and provides an efficient, accurate and reliable quality solution for silicone packaging of LED display screens. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0037] Figure 2 It is a schematic diagram of the connection structure between the protective housing and the curing lamp of the present invention;

[0038] Figure 3 It is a schematic diagram of the main structure of the dispensing mechanism of the present invention;

[0039] Figure 4 It is a schematic diagram of the structure of the operating table of the present invention;

[0040] Figure 5 It is a schematic diagram of the cross-sectional structure of the positioning component of the present invention;

[0041] Figure 6 For the present invention Figure 5 The structural diagram of the enlarged part in the middle;

[0042] Figure 7 It is a schematic diagram of the structure of the three-dimensional guide assembly of the present invention;

[0043] Figure 8 It is a schematic diagram of the structure of the Y-axis guide assembly of the present invention;

[0044] Fig. 9 It is a schematic diagram of the connection structure between the X-axis guide assembly and the cross plate of the present invention;

[0045] Fig.10 It is a schematic diagram of the structure of the Z-axis guide assembly of the present invention.

[0046] In the figure: 1. Glue dispensing mechanism body; 11. Operating table; 111. Bottom plate; 1111. Reserved groove; 1112. Support frame; 112. Placement table; 12. Positioning assembly; 121. Positioning plate; 1211. Glue dispensing groove; 122. Adjusting cylinder; 123. Clamping frame; 13. Three-dimensional guide assembly; 131. Y-axis guide assembly; 1311. First connecting plate; 13111. First guide rail; 1312. First frame; 1313. First servo motor; 1314. First lead screw; 13141. First slider; 132. X-axis guide assembly 1. second connecting plate; 1321. second guide rail; 1322. second frame; 1323. second lead screw; 1324. second servo motor; 133. Z-axis guide assembly; 1331. third frame; 1331. second slider; 1332. third servo motor; 1333. third lead screw; 13331. movable frame; 1334. stepper motor; 1335. glue gun; 134. horizontal plate; 1341. third guide rail; 2. protective shell; 3. curing lamp; 31. limit frame; 32. heat sink; 33. rotating shaft. DETAILED DESCRIPTION

[0047] 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.

[0048] Embodiment 1

[0049] like Figures 1 to 10 As shown, an embodiment of the present invention is: a silicone packaging structure for an LED display screen, comprising a dispensing mechanism body 1, a protective shell 2 is fixedly installed on the outer side of the upper end surface of the dispensing mechanism body 1, the front and top of the protective shell 2 are both designed with an open structure, and a curing lamp 3 is rotatably installed on the front of the protective shell 2;

[0050] The dispensing mechanism body 1 includes an operating table 11, a three-dimensional guide component 13 is fixedly installed on the upper end surface of the operating table 11 inside the protective shell 2, and a positioning component 12 is movably installed in the middle of the upper end surface of the operating table 11;

[0051] The positioning assembly 12 includes a positioning plate 121, and clamping frames 123 are movably mounted on both sides of the positioning plate 121. An adjusting cylinder 122 is fixedly mounted on the top of the clamping frame 123, and the top of the adjusting cylinder 122 is rotatably connected to the three-dimensional guide assembly 13;

[0052] The positioning plate 121 is provided with dispensing grooves 1211 in a rectangular array, the cross-sectional dimensions of the bottom of the dispensing grooves 1211 are larger than the cross-sectional dimensions of the top, an LED display screen is movably placed on the operating table 11 below the positioning plate 121, the lower end surface of the positioning plate 121 is in contact with the upper end surface of the LED display screen but not fixedly connected, and the opening position of the dispensing grooves 1211 matches the installation position of the LED chip on the LED display screen;

[0053] There are two clamping frames 123, and an insertion slot matching the thickness of the positioning plate 121 is opened on the opposite side of the two clamping frames 123. The front ends of the two clamping frames 123 are designed with an open structure, and the rear ends of the two clamping frames 123 are designed with a closed structure. Both clamping frames 123 are designed with soft rubber material.

[0054] Specifically, the positioning assembly 12 includes a positioning plate 121 and a clamping frame 123. The positioning plate 121 is precisely provided with a dispensing groove 1211 that matches the installation position of the LED chip on the LED display. This design ensures that each LED chip has a corresponding dispensing position, thereby avoiding dispensing errors caused by inaccurate positioning. The clamping frame 123 is connected to the three-dimensional guide assembly 13 through the adjustment cylinder 122, thereby realizing the stable installation and flexible adjustment of the positioning plate 121. More importantly, the dispensing groove 1211 on the positioning plate 121 adopts a special design in which the bottom cross-sectional dimension is larger than the top cross-sectional dimension. This design enables the colloid to flow naturally to the bottom of the dispensing groove 1211 during the dispensing process, forming a certain accumulation. When the positioning plate 121 moves up, the adjacent colloids will first contact and fuse at the bottom due to gravity, effectively reducing the generation of bubbles. At the same time, since the colloids contact and fuse from the bottom, the uniformity of the packaging thickness and the flatness of the packaging surface can be ensured, thereby greatly reducing the problems of inconsistent packaging thickness and uneven packaging surface.

[0055] The contact mode between the positioning plate 121 and the upper end surface of the LED display screen adopts a non-fixed connection design. This movable connection mode not only allows the positioning plate 121 and the LED display screen to be quickly separated after dispensing, but also enables the positioning plate 121 to firmly clamp the LED display screen during the dispensing operation, thereby avoiding displacement and shaking. This design can adapt to LED displays of different thicknesses, further improving the quality and yield of the package.

[0056] It should be mentioned that the three-dimensional guide assembly 13 includes a Y-axis guide assembly 131, an X-axis guide assembly 132, a Z-axis guide assembly 133 and a horizontal plate 134, and a control unit electrically connected to these components. These components together realize precise three-dimensional movement control, ensuring that the glue gun 1335 can accurately reach the corresponding position of each LED chip. The glue injection angle of the glue gun 1335 is precisely controlled by the stepper motor 1334, further ensuring the uniformity and consistency of glue dispensing.

[0057] The clamping frame 123 is made of soft rubber material and is designed to be open and closed at the front and rear ends. This design not only ensures the stability of the clamping, but also facilitates the operator to load and unload the positioning plate 121. The soft rubber material provides good buffering and reduces the damage that may be caused to the LED display during operation.

[0058] In summary, the use of the positioning component 12 and the three-dimensional guide component 13 of the present invention not only ensures the accuracy and consistency of glue dispensing, but also greatly shortens the glue dispensing cycle and improves the efficiency of the production line. In particular, the innovative design of preventing premature contact of the colloid effectively solves the problems of inconsistent packaging thickness and uneven packaging surface, thereby significantly improving the yield rate. Therefore, the present invention successfully overcomes the key problems mentioned in the background technology through its exquisite design and innovative solutions, and provides an efficient, accurate and reliable quality solution for silicone packaging of LED display screens.

[0059] Embodiment 2

[0060] In order to improve the heat dissipation and heat radiation of the curing lamp, and to facilitate the safe flipping of the curing lamp and realize the position limitation of the curing lamp, such as Figure 1 and Figure 2 As shown, in this embodiment, a heat dissipation fin 32 is fixedly installed on the curing lamp 3. The heat dissipation fin 32 is made of aluminum to improve the heat dissipation efficiency of the curing lamp 3. The surface of the heat dissipation fin 32 is coated with a high emissivity coating to enhance the heat radiation effect. A limit frame 31 is fixedly installed on the curing lamp 3 below the heat dissipation fin 32. The limit frame 31 is in contact with the bottom of the front end of the operating table 11 but is not fixedly connected. A gripping groove is provided on the limit frame 31. The gripping groove provided on the limit frame 31 is designed to conform to the shape of a human palm, so that the operator can firmly hold the curing lamp 3 for flipping operation. Rotating shafts 33 are fixedly installed on the top of both sides of the curing lamp 3, and the two rotating shafts 33 are rotatably connected to the protective shell 2 at opposite ends. The curing lamp 3 is rotatably installed on the inner side of the front side of the protective shell 2 through the rotating shaft 33.

[0061] Specifically, the heat dissipation fins 32 fixedly mounted on the curing lamp 3 are made of aluminum, which improves the heat dissipation efficiency of the curing lamp 3. At the same time, the surface of the heat dissipation fins 32 is coated with a high-emissivity coating to enhance the thermal radiation effect. By improving the heat dissipation efficiency, the influence of the heat generated by the curing lamp 3 when it is working on the curing process can be reduced, thereby improving the curing efficiency and quality. The design of the limit frame 31 contacting the bottom of the front end of the operating table 11 but not fixedly connected, and the holding groove on the limit frame 31 conforming to the shape of the human palm, allows the operator to firmly hold the curing lamp 3 for flipping operation, thereby improving the convenience and safety of operation, and the curing lamp 3 can be limited by the limit frame 31.

[0062] Embodiment 3

[0063] To improve operational stability and accurately place the LED display, such as Figure 3 and Figure 4As shown, in this embodiment, the operating table 11 includes a base plate 111, a reserved groove 1111 is opened in the middle of the upper end surface of the base plate 111, a placing table 112 is fixedly installed on the lower end surface of the base plate 111, a support frame 1112 is fixedly installed on the outer side of the upper end surface of the base plate 111, the inner side dimension of the support frame 1112 is larger than the width of the positioning plate 121, and the upper end surface of the base plate 111 is in contact with the bottom of the two clamping frames 123 but is not fixedly connected.

[0064] Specifically, the operating table 11 provides a stable base through the design of the bottom plate 111 and the support frame 1112, ensuring the stability of the entire dispensing mechanism body 1 during operation and reducing dispensing errors caused by vibration or instability. The reserved groove 1111 opened in the middle of the upper end surface of the bottom plate 111 allows the LED display to be placed directly, saving additional space, making the entire device more compact and improving space utilization efficiency.

[0065] Furthermore, the placement table 112 is designed with a soft rubber material, and the bottom of the placement table 112 is provided with anti-slip grooves. The anti-slip grooves of the placement table 112 are designed as a diamond pattern to increase friction and prevent the device from sliding during the LED display screen packaging operation. The middle of the upper end surface of the placement table 112 is embedded and installed in the reserved groove 1111. The top height of the placement table 112 is lower than the top height of the reserved groove 1111. The LED display screen is movably placed on the top of the placement table 112 in the reserved groove 1111, and the cross-sectional size of the LED display screen matches the cross-sectional size of the reserved groove 1111.

[0066] Specifically, the anti-slip pattern of the placement table 112 is designed as a diamond pattern to increase friction and prevent the device from sliding during the LED display screen packaging operation. At the same time, the middle of the upper end surface of the placement table 112 is embedded in the reserved groove 1111, which makes the placement of the LED display screen more precise and improves the accuracy of the packaging process.

[0067] Embodiment 4

[0068] In order to ensure that the dispensing gun can accurately reach the corresponding position of each LED chip, such as Figure 7 and Fig.10 As shown, in this embodiment, the three-dimensional guide assembly 13 includes a Y-axis guide assembly 131, an X-axis guide assembly 132, a Z-axis guide assembly 133 and a cross plate 134. The Y-axis guide assembly 131 and the cross plate 134 are both fixedly connected to the top of the support frame 1112. The three-dimensional guide assembly 13 also includes a control unit, which is electrically connected to the Y-axis guide assembly 131, the X-axis guide assembly 132 and the Z-axis guide assembly 133 to achieve precise three-dimensional movement control.

[0069] Specifically, the three-dimensional guide component 13 includes a Y-axis guide component 131, an X-axis guide component 132, a Z-axis guide component 133 and a horizontal plate 134, and a control unit electrically connected to these components, thereby realizing precise three-dimensional movement control, ensuring that the dispensing gun 1335 can accurately reach the corresponding position of each LED chip, thereby improving the accuracy and efficiency of dispensing.

[0070] Furthermore, the Y-axis guide assembly 131 includes a first connecting plate 1311, which is fixedly installed on the top left side of the operating table 11 through a support frame 1112, and a first frame body 1312 is fixedly installed on the first connecting plate 1311. A first servo motor 1313 is fixedly installed at one end of the first frame body 1312. The first servo motor 1313 has high-precision control characteristics to ensure the precise movement of the X-axis guide assembly 132. A first lead screw 1314 is transmission-installed at one end of the first servo motor 1313, and the first lead screw 1314 is rotatably installed on the inner side of the first frame body 1312. A first slider 13141 is threadedly installed on the first lead screw 1314, and a first guide rail 13111 is fixedly installed on the upper end surface of the first connecting plate 1311. The bottom middle of the first connecting plate 1311 is rotatably installed with the top of an adjusting cylinder 122 through a rotating seat.

[0071] Specifically, the first servo motor 1313 with high-precision control characteristics in the Y-axis guide assembly 131 ensures the precise movement of the X-axis guide assembly 132, improves the accuracy of the entire dispensing process, and ensures the uniformity and consistency of the dispensing.

[0072] Furthermore, the X-axis guide assembly 132 includes a second connecting plate 1321, on which a second frame 1322 is fixedly mounted, a second servo motor 1324 is fixedly mounted at one end of the second frame 1322, and the second servo motor 1324 can achieve rapid response and precise positioning of the Z-axis guide assembly 133, a second lead screw 1323 is transmission-mounted at one end of the second servo motor 1324, the second lead screw 1323 is rotatably mounted on the inner side of the second frame 1322, a second slider 13311 is threadedly mounted on the second lead screw 1323, a second guide rail 13211 is fixedly mounted on the second connecting plate 1321, the bottom of the second slider 13311 is slidably connected to the second guide rail 13211, one side of the upper end surface of the second connecting plate 1321 is fixedly connected to the bottom of the first slider 13141, and the bottom of the second connecting plate 1321 below the first slider 13141 is slidably mounted to the first guide rail 13111.

[0073] Specifically, the second servo motor 1324 in the X-axis guide assembly 132 can achieve rapid response and precise positioning of the Z-axis guide assembly 133, thereby improving the response speed and positioning accuracy during the dispensing process and ensuring the timeliness and accuracy of the dispensing.

[0074] Furthermore, the Z-axis guide assembly 133 includes a third frame 1331, the back side of the third frame 1331 is fixedly connected to the second slider 13311, a third servo motor 1332 is fixedly installed on the top of the third frame 1331, a third lead screw 1333 is transmission-installed on the bottom of the third servo motor 1332, the third lead screw 1333 is rotatably installed on the inner side of the third frame 1331, a movable frame 13331 is threadedly installed on the third lead screw 1333, and the third servo motor 1332 adopts closed-loop control to improve the positioning accuracy of the movable frame 13331.

[0075] Specifically, the third servo motor 1332 in the Z-axis guide assembly 133 adopts closed-loop control, which improves the positioning accuracy of the movable frame 13331, ensures that the glue gun 1335 can accurately align with each LED chip, and improves the accuracy of glue dispensing.

[0076] Furthermore, a stepper motor 1334 is fixedly installed on the inner side of the movable frame 13331, a transmission shaft at the bottom of the stepper motor 1334 passes through the bottom of the movable frame 13331 and is provided with a glue gun 1335, an angle adjustment frame is provided on the back of the glue gun 1335, the glue gun 1335 is movably installed with the transmission shaft at the bottom of the stepper motor 1334 through the angle adjustment frame, and the stepper motor 1334 can realize precise control of the glue gun 1335 to meet different glue dispensing requirements.

[0077] Specifically, the stepper motor 1334 fixedly installed on the inner side of the movable frame 13331 can realize precise control of the glue dispensing gun 1335 to meet the glue dispensing requirements of different positions, improve the flexibility and adaptability of glue dispensing, and ensure the diversity and personalization of the glue dispensing process.

[0078] Furthermore, the transverse plate 134 is fixedly installed on the top right side of the operating table 11 through the support frame 1112, and a third guide rail 1341 is fixedly installed on the upper end surface of the transverse plate 134. The other side of the bottom of the second connecting plate 1321 is slidably installed with the third guide rail 1341. The third guide rail 1341 and the first guide rail 13111 installed on the transverse plate 134 are both made of high-strength materials to withstand the weight of the second connecting plate 1321 and the force generated during movement. The bottom of the transverse plate 134 is rotatably connected to the top of another adjusting cylinder 122 through a rotating seat.

[0079] Specifically, the third guide rail 1341 and the first guide rail 13111 installed on the transverse plate 134 are both made of high-strength materials to withstand the weight of the second connecting plate 1321 and the force generated during movement, ensuring stability and durability during operation and improving the reliability and service life of the entire packaging structure.

[0080] When the present invention is used, it is ensured that the cross-sectional dimensions of the LED display screen match the cross-sectional dimensions of the reserved groove 1111, and the LED display screen is positioned directly through the reserved groove 1111. A positioning plate 121 that matches the LED display screen is selected, and is directly inserted into the insertion slot that matches the thickness of the positioning plate 121 and is opened on the opposite side of the two clamping frames 123, thereby completing the installation of the positioning plate 121. Since the LED display screen is positioned through the reserved groove 1111, no additional positioning is required, thereby facilitating subsequent removal operations. The three-dimensional guide assembly 13 including the movement parameters of the Y-axis guide assembly 131, the X-axis guide assembly 132 and the Z-axis guide assembly 133 are set by the control unit to ensure that the glue gun 1335 can accurately reach the corresponding position of each LED chip. Start the glue gun 1335, and adjust the angle of the glue gun injection through the stepper motor 1334, so that the colloid is dripped into the glue dispensing groove 1211 and the corresponding LED chip is covered. After the glue dispensing is completed, the positioning plate 121 is moved upward as a whole by adjusting the cylinder 122. Due to the design of the glue dispensing groove 1211 with a large bottom and a small top, adjacent colloids are gathered under the action of gravity, and no bubbles are generated between adjacent colloids, so that the upper end surface of the LED display can be more comprehensively covered. Then, the curing lamp 3 is rotated. The curing lamp 3 is fixedly mounted with heat dissipation fins 32 to improve the heat dissipation efficiency of the curing lamp 3. The surface is coated with a high-emissivity coating to enhance the thermal radiation effect. The ultraviolet rays emitted by the curing lamp 3 accelerate the curing of the colloid, and then the encapsulation is completed. Once all LED chips are glued and cured, the encapsulation process of the LED display is completed. Finally, the encapsulated LED display is removed from the operating table 11 for subsequent inspection and packaging.

Claims

1. A silicone packaging structure for an LED display screen, comprising a dispensing mechanism body (1), a protective shell (2) fixedly mounted on the outer side of the upper end surface of the dispensing mechanism body (1), the front and top of the protective shell (2) both adopt an open structure design, and a curing lamp (3) is rotatably mounted on the front of the protective shell (2), characterized in that: The dispensing mechanism body (1) comprises an operating table (11), a three-dimensional guide component (13) is fixedly mounted on the upper end surface of the operating table (11) inside the protective shell (2), and a positioning component (12) is movably mounted in the middle of the upper end surface of the operating table (11); The positioning assembly (12) comprises a positioning plate (121), and clamping frames (123) are movably mounted on both sides of the positioning plate (121), and an adjusting cylinder (122) is fixedly mounted on the top of the clamping frame (123), and the top of the adjusting cylinder (122) is rotatably connected to the three-dimensional guide assembly (13); The positioning plate (121) is provided with glue dispensing grooves (1211) in a rectangular array, the bottom cross-sectional dimensions of the glue dispensing grooves (1211) are larger than the top cross-sectional dimensions, an LED display screen is movably placed on the operating table (11) below the positioning plate (121), the lower end surface of the positioning plate (121) is in contact with the upper end surface of the LED display screen but is not fixedly connected, and the opening position of the glue dispensing grooves (1211) matches the installation position of the LED chip on the LED display screen; There are two clamping frames (123), and opposite sides of the two clamping frames (123) are provided with insertion slots matching the thickness of the positioning plate (121). The front ends of the two clamping frames (123) are designed with an open structure, and the rear ends of the two clamping frames (123) are designed with a closed structure. The two clamping frames (123) are designed with a soft rubber material.

2. The LED display screen silicone packaging structure according to claim 1, characterized in that: The curing lamp (3) is fixedly mounted with heat dissipation fins (32), which are made of aluminum to improve the heat dissipation efficiency of the curing lamp (3). The surface of the heat dissipation fins (32) is coated with a high emissivity coating to enhance the heat radiation effect. A limit frame (31) is fixedly mounted on the curing lamp (3) below the heat dissipation fins (32). The limit frame (31) is in contact with the bottom of the front end of the operating table (11) but is not fixedly connected. A gripping groove is provided on the limit frame (31). The gripping groove provided on the limit frame (31) is designed to conform to the shape of a human palm so that an operator can firmly hold the curing lamp (3) for flipping operation. Rotating shafts (33) are respectively fixedly mounted on the tops of both sides of the curing lamp (3). The two rotating shafts (33) are respectively rotatably connected to the protective housing (2) at opposite ends. The curing lamp (3) is rotatably mounted on the inner side of the front face of the protective housing (2) via the rotating shafts (33).

3. The LED display screen silicone packaging structure according to claim 1, characterized in that: The operating table (11) comprises a bottom plate (111), a reserved groove (1111) is provided in the middle of the upper end surface of the bottom plate (111), a placing table (112) is fixedly installed on the lower end surface of the bottom plate (111), a supporting frame (1112) is fixedly installed on the outer side of the upper end surface of the bottom plate (111), the inner side dimension of the supporting frame (1112) is larger than the width of the positioning plate (121), and the upper end surface of the bottom plate (111) is in contact with the bottoms of the two clamping frames (123) but is not fixedly connected.

4. The LED display screen silicone packaging structure according to claim 3, characterized in that: The placement platform (112) is designed with a soft rubber material, and the bottom of the placement platform (112) is provided with anti-skid patterns. The anti-skid patterns of the placement platform (112) are designed as diamond patterns to increase friction and prevent the device from sliding during the LED display screen packaging operation. The middle of the upper end surface of the placement platform (112) is embedded in the reserved groove (1111), and the top height of the placement platform (112) is lower than the top height of the reserved groove (1111). The LED display screen is movably placed on the top of the placement platform (112) in the reserved groove (1111), and the cross-sectional size of the LED display screen matches the cross-sectional size of the reserved groove (1111).

5. The LED display screen silicone packaging structure according to claim 1, characterized in that: The three-dimensional guide assembly (13) comprises a Y-axis guide assembly (131), an X-axis guide assembly (132), a Z-axis guide assembly (133) and a cross plate (134), wherein the Y-axis guide assembly (131) and the cross plate (134) are both fixedly connected to the top of the support frame (1112), and the three-dimensional guide assembly (13) further comprises a control unit, which is electrically connected to the Y-axis guide assembly (131), the X-axis guide assembly (132) and the Z-axis guide assembly (133) to achieve precise three-dimensional movement control.

6. The LED display screen silicone packaging structure according to claim 5, characterized in that: The Y-axis guide assembly (131) comprises a first connecting plate (1311), the first connecting plate (1311) is fixedly mounted on the top left side of the operating table (11) through a supporting frame (1112), a first frame (1312) is fixedly mounted on the first connecting plate (1311), a first servo motor (1313) is fixedly mounted on one end of the first frame (1312), and the first servo motor (1313) has a high-precision control characteristic to ensure the X-axis guide assembly (132) Precise movement, a first lead screw (1314) is installed at one end of the first servo motor (1313), the first lead screw (1314) is rotatably installed on the inner side of the first frame (1312), a first slider (13141) is threadedly installed on the first lead screw (1314), a first guide rail (13111) is fixedly installed on the upper end surface of the first connecting plate (1311), and the middle of the bottom of the first connecting plate (1311) is rotatably installed with the top of an adjusting cylinder (122) through a rotating seat.

7. The LED display screen silicone packaging structure according to claim 5, characterized in that: The X-axis guide assembly (132) comprises a second connecting plate (1321), a second frame (1322) is fixedly mounted on the second connecting plate (1321), a second servo motor (1324) is fixedly mounted on one end of the second frame (1322), the second servo motor (1324) can achieve rapid response and precise positioning of the Z-axis guide assembly (133), a second lead screw (1323) is transmission-mounted on one end of the second servo motor (1324), and the second lead screw (1323) is rotatably mounted on the second frame (1321). 1322), a second slider (13311) is threadedly mounted on the second lead screw (1323), a second guide rail (13211) is fixedly mounted on the second connecting plate (1321), the bottom of the second slider (13311) is slidably connected to the second guide rail (13211), one side of the upper end surface of the second connecting plate (1321) is fixedly connected to the bottom of the first slider (13141), and the bottom of the second connecting plate (1321) below the first slider (13141) is slidably mounted to the first guide rail (13111).

8. The LED display screen silicone packaging structure according to claim 5, characterized in that: The Z-axis guide assembly (133) comprises a third frame (1331), the back of the third frame (1331) is fixedly connected to the second slider (13311), a third servo motor (1332) is fixedly installed on the top of the third frame (1331), a third lead screw (1333) is transmission-installed on the bottom of the third servo motor (1332), the third lead screw (1333) is rotatably installed on the inner side of the third frame (1331), a movable frame (13331) is threadedly installed on the third lead screw (1333), and the third servo motor (1332) adopts closed-loop control to improve the positioning accuracy of the movable frame (13331).

9. The LED display screen silicone packaging structure according to claim 8, characterized in that: A stepper motor (1334) is fixedly installed on the inner side of the movable frame (13331); a transmission shaft at the bottom of the stepper motor (1334) passes through the bottom of the movable frame (13331) and is provided with a glue dispensing gun (1335); an angle adjustment frame is provided on the back of the glue dispensing gun (1335); the glue dispensing gun (1335) is movably installed with the transmission shaft at the bottom of the stepper motor (1334) through the angle adjustment frame; the stepper motor (1334) can realize precise control of the glue dispensing gun (1335) to meet different glue dispensing requirements.

10. The LED display screen silicone packaging structure according to claim 5, characterized in that: The transverse plate (134) is fixedly mounted on the top right side of the operating table (11) through a support frame (1112); a third guide rail (1341) is fixedly mounted on the upper end surface of the transverse plate (134); the other side of the bottom of the second connecting plate (1321) is slidably mounted on the third guide rail (1341); the third guide rail (1341) and the first guide rail (13111) mounted on the transverse plate (134) are both made of high-strength materials to withstand the weight of the second connecting plate (1321) and the force generated during movement; the bottom of the transverse plate (134) is rotatably connected to the top of another regulating cylinder (122) through a rotating seat.

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