Digital display type LED glue injection head

Abstract

The utility model relates to the field of LED preparation equipment, and specifically discloses a digital display type LED glue injection head, which comprises a glue injection structure and a fixing structure, the fixing structure comprises a fixing sleeve and a sealing gasket, the fixing sleeve is provided with an LED socket at one end, the sealing gasket is installed on the inner wall of the LED socket, an air hole is arranged on one side of the sealing gasket, a breather pipe is connected to the air hole, one end of the breather pipe penetrates the inner wall of the fixing sleeve and is connected to an air cylinder, an air hole is arranged on the inner wall of the LED socket, a glue injection structure mounting hole is arranged at the middle position of the fixing sleeve, the glue injection structure is mounted in the glue injection structure mounting hole, a plurality of glue injection holes are arranged on the glue injection structure, the sealing gasket is used for sealing, the glue injection structure and the LED form a sealed structure, an air hole is arranged, air can be discharged through the glue injection hole before glue injection, a negative pressure is formed between the glue injection structure and the LED, then glue injection is carried out, air can be prevented from mixing into the glue during glue injection, air holes are avoided in the LED after solidification, and the quality of the LED is reduced.

Description

Technical Field

[0001] This utility model relates to the field of LED manufacturing equipment, specifically to a digital display LED dispensing head. Background Technology

[0002] The curing process of transparent silicone for digital display LEDs directly affects their optical performance (such as transmittance and refractive index matching), mechanical reliability (such as thermal shock resistance and moisture resistance), and long-term stability. During the fabrication of digital display LEDs, transparent silicone needs to be injected into a mold containing the LED chip and cured. Compared to the general LED encapsulation process, digital display LEDs require a larger amount of encapsulation and a larger volume. Therefore, conventional encapsulation heads not only require a significant amount of time for encapsulation but also exhibit numerous air pockets between the layers of adhesive due to the large amount of glue being poured, which affects the quality of the LED. Therefore, a new encapsulation head is needed to address this issue. Utility Model Content

[0003] This utility model aims to solve the technical problems mentioned in the background section above, and proposes the following technical solutions:

[0004] A digital display LED dispensing head includes a dispensing structure and a fixing structure. The fixing structure includes a fixing sleeve and a sealing gasket. One end of the fixing sleeve is provided with an LED socket. The sealing gasket is installed on the inner wall of the LED socket. The sealing gasket is a hollow structure with a semi-circular cross-section. An air hole is provided on one side of the sealing gasket, and a vent pipe is connected to the air hole. One end of the vent pipe passes through the inner wall of the fixing sleeve and is connected to an air cylinder. The air cylinder includes a housing, a piston, and a rotating rod. The housing is a cylindrical structure with open ends. The piston is fixed on the rotating rod. One end of the rotating rod with the piston is located inside the housing and is threadedly connected to the housing. One end of the housing is connected to the vent pipe. A vent hole is provided on the inner wall of the LED socket, and the vent hole is located above the sealing gasket.

[0005] The fixed sleeve has a glue injection structure mounting hole in the middle position, and the glue injection structure is installed in the glue injection structure mounting hole. The glue injection structure has a plurality of glue injection holes.

[0006] Preferably, the glue injection hole is provided with a glue dispensing device connector.

[0007] According to the claim, the LED dispensing head for digital displays is characterized in that the bottom outer periphery of the dispensing structure has a rounded corner structure.

[0008] Preferably, the glue injection structure is slidably connected to the glue injection structure mounting hole, and lifting cylinders are respectively provided at the four corners of the top of the fixed sleeve. The lifting cylinders are connected to the lifting plate, and the lifting plate is provided with a connecting hole in the middle. The outer periphery of the glue injection structure is fixedly connected to the connecting hole.

[0009] Preferably, a sealing ring is provided on the outer periphery of the glue injection structure.

[0010] The beneficial effects of this utility model are:

[0011] 1. By setting up a fixed structure and sealing it with a sealing gasket, a sealed structure is formed between the glue injection structure and the LED. By setting a vent hole, air can be discharged through the glue injection hole before glue injection, so that negative pressure is formed between the glue injection structure and the LED. Then the glue is injected, which can prevent air from being mixed into the glue during the glue injection process, and avoid the presence of air bubbles in the LED after curing, thus reducing the quality of the LED.

[0012] 3. By setting up a lifting cylinder and raising and lowering the glue injection structure, the glue injection can be carried out while the height of the glue injection structure is raised by the lifting cylinder, which can prevent glue from sticking to the bottom of the glue injection structure. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of the present invention;

[0015] Figure 3 for Figure 2 Enlarged view of the area circled in the middle;

[0016] Figure 4 This is a cross-sectional view of the present invention in Embodiment 2.

[0017] In the diagram: 1. Injection structure; 1-1. Injection hole; 2. Fixing structure; 2-1. Fixing sleeve; 2-2. Sealing gasket; 2-21. Air hole; 2-3. LED socket; 2-31. Vent hole; 2-4. Injection structure mounting hole; 3. Vent pipe; 4. Air cylinder; 4-1. Housing; 4-2. Piston; 4-3. Rotating rod; 5. Injection device connector; 6. Lifting cylinder; 7. Lifting plate; 7-1. Connecting hole; 8. Sealing ring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] In the description of this utility model, it should be understood that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The connection methods described by the terms "fixed connection" and "fixed setting" include, but are not limited to, "welding," "riveting," "adhesion," and "threaded connection." The terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0020] The terms “upper,” “lower,” “front,” “back,” “left,” “right,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Example 1

[0022] Reference Figure 1-3 A digital display LED dispensing head includes a dispensing structure 1 and a fixing structure 2. The fixing structure 2 includes a fixing sleeve 2-1 and a sealing gasket 2-2. The shape of the fixing sleeve 2-1 can be adjusted according to the shape of the LED to be dispensed. One end of the fixing sleeve 2-1 is provided with an LED socket 2-3. The sealing gasket 2-2 is installed on the inner wall of the LED socket 2-3. The sealing gasket 2-2 has a hollow structure and a semi-circular cross-section. An air hole 2-21 is provided on one side of the sealing gasket 2-2, and a connecting pipe is provided on the air hole 2-21. Air tube 3, one end of which passes through the inner wall of the fixed sleeve 2-1 and is connected to air cylinder 4. Air cylinder 4 includes housing 4-1, piston 4-2 and rotating rod 4-3. Housing 4-1 is a cylindrical structure with open ends. Piston 4-2 is fixed on rotating rod 4-3. Rotating rod 4-3 fixes one end of piston 4-2 inside housing 4-1 and is threadedly connected to housing 4-1. One end of housing 4-1 is connected to air tube 3. Air hole 2-31 is provided on the inner wall of LED sleeve interface 2-3. Air hole 2-31 is located above sealing gasket 2-2.

[0023] A glue injection structure mounting hole 2-4 is provided in the middle position of the fixed sleeve 2-1. The glue injection structure 1 is installed in the glue injection structure mounting hole 2-4. Several glue injection holes 1-1 are provided on the glue injection structure 1.

[0024] Preferably, a glue dispensing device connector 5 is provided on the glue dispensing hole 1-1.

[0025] Preferably, the bottom outer periphery of the injection structure 1 has a rounded corner structure.

[0026] In actual operation, first, the fixing structure 2 is placed on the LED that needs to be glued through the LED sleeve structure 2-3. The position is adjusted so that the sealing gasket 2-2 is placed on the outer periphery of the LED. Then, the rotating rod 4-3 is rotated clockwise. The rotating rod 4-3 will drive the piston 4-2 to move downward. The gas in the air cylinder 4 will be squeezed into the sealing gasket 2-2. The sealing gasket 2-2 will bulge and squeeze the outer periphery of the LED, so that the air below the sealing gasket 2-2 will not enter the upper part of the sealing gasket 2-2. Then, the vent hole 2-31 can be connected to the vacuum machine to extract the air, so that a negative pressure is formed in the fixing sleeve 2-1. Then, glue is injected into the LED through the glue injection hole 1-1.

[0027] By using this method for adhesive injection, air can be prevented from being mixed into the adhesive during the injection process, thus avoiding pores in the LED after curing and reducing the quality of the LED.

[0028] Example 2

[0029] Reference Figure 4 The glue injection structure 1 is slidably connected to the glue injection structure mounting hole 2-4. The top four corners of the fixed sleeve 2-1 are respectively equipped with lifting cylinders 6, and lifting plates 7 are connected to the lifting cylinders 6. The middle of the lifting plate 7 is provided with a connecting hole 7-1. The outer periphery of the glue injection structure 1 is fixedly connected to the connecting hole 7-1. A sealing ring 8 is provided on the outer periphery of the glue injection structure 1. When injecting glue, the height of the glue injection structure 1 can be raised by the lifting cylinders 6 while the glue is being injected, which can prevent glue from sticking to the bottom of the glue injection structure 1.

Claims

1. A digital display LED dispensing head, comprising a dispensing structure (1) and a fixing structure (2), characterized in that, The fixing structure (2) includes a fixing sleeve (2-1) and a sealing gasket (2-2). One end of the fixing sleeve (2-1) is provided with an LED socket (2-3). The sealing gasket (2-2) is installed on the inner wall of the LED socket (2-3). The sealing gasket (2-2) is a hollow structure with a semi-circular cross-section. One side of the sealing gasket (2-2) is provided with an air hole (2-21). A vent pipe (3) is connected to the air hole (2-21). One end of the vent pipe (3) passes through the inner wall of the fixing sleeve (2-1) and is connected to an air cylinder (4). 4) Includes a housing (4-1), a piston (4-2), and a rotating rod (4-3). The housing (4-1) is a cylindrical structure with openings at both ends. The piston (4-2) is fixed on the rotating rod (4-3). One end of the rotating rod (4-3) with the piston (4-2) is located inside the housing (4-1) and is threadedly connected to the housing (4-1). One end of the housing (4-1) is connected to the vent pipe (3). A vent hole (2-31) is provided on the inner wall of the LED socket (2-3). The vent hole (2-31) is located above the sealing gasket (2-2). The fixed sleeve (2-1) has a glue injection structure mounting hole (2-4) in the middle position. The glue injection structure (1) is installed in the glue injection structure mounting hole (2-4). The glue injection structure (1) has a plurality of glue injection holes (1-1).

2. The LED dispensing head for digital displays according to claim 1, characterized in that, A glue dispensing device connector (5) is provided on the glue dispensing hole (1-1).

3. The LED dispensing head for digital displays according to claim 2, characterized in that, The bottom outer periphery of the injection structure (1) is a rounded corner structure.

4. The LED dispensing head for digital displays according to claim 2, characterized in that, The glue injection structure (1) is slidably connected to the glue injection structure mounting hole (2-4) in the upper and lower parts. The four corners of the top of the fixed sleeve (2-1) are respectively provided with lifting cylinders (6). The lifting cylinder (6) is connected to the lifting plate (7). The lifting plate (7) is provided with a connecting hole (7-1) in the middle. The outer periphery of the glue injection structure (1) is fixedly connected to the connecting hole (7-1).

5. The LED dispensing head for digital displays according to claim 4, characterized in that, The glue injection structure (1) has a sealing ring (8) on its outer periphery.

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