A dispensing device structure for LEDs

Abstract

This utility model relates to the field of LED manufacturing, specifically disclosing a dispensing device structure for LEDs, including a dispensing cylinder, a dispensing head, and a top rod. A valve structure is installed inside the dispensing head, comprising a flow-limiting ring, a flow-limiting plate, and a spring. The flow-limiting ring is installed inside the dispensing head, and the flow-limiting plate is located below the flow-limiting ring, with its size corresponding to the size of the inner ring of the flow-limiting ring. A spring slot is provided below the flow-limiting ring, and the spring is installed in the spring slot. A connecting rod is provided on the flow-limiting plate, and the connecting rod is connected to one end of the top rod. The valve structure prevents excess adhesive from flowing below the flow-limiting plate, while the adhesive below the flow-limiting plate is adsorbed onto the inner wall of the dispensing head due to negative pressure. This solves the problem of adhesive sticking or excessive adhesive being dispensed during LED dispensing.

Description

Technical Field

[0001] This utility model relates to the field of LED manufacturing, specifically to a dispensing device structure for LEDs. Background Technology

[0002] LED dispensing is a key step in the LED manufacturing process. By precisely applying adhesive to the surface of chips, brackets, or packaging structures, it achieves functions such as mechanical fixation, electrical insulation, optical lens forming, and environmental protection.

[0003] Existing dispensing operations are all performed using dispensing machines. The dispensing process involves the following steps: 1. Removing oil and impurities from the substrate surface with alcohol or acetone to ensure adhesive bonding strength; 2. Applying adhesive to the substrate using a dispensing machine; 3. Heating and curing.

[0004] The dispensing head is crucial in the dispensing process. Existing dispensing heads often suffer from problems such as glue sticking and excessive glue application, which greatly affects the quality of finished LED products. Therefore, a dispensing head specifically designed for LEDs is needed to solve this problem. Utility Model Content

[0005] This utility model aims to solve the technical problems mentioned in the background section above, and proposes the following technical solutions:

[0006] An LED dispensing device structure includes a dispensing cylinder, a dispensing head, and a push rod. A circular hole is provided at the center of the top of the dispensing cylinder. A partition is provided inside the dispensing cylinder, and a push rod insertion hole is provided on the partition. The push rod passes through both the circular hole and the push rod insertion hole. The bottom of the dispensing cylinder is open, and a dispensing head connecting block is provided at the bottom opening. The dispensing head connecting block has an annular structure, and the dispensing head is connected to the dispensing head connecting block. An adhesive inlet is provided on the side of the dispensing cylinder. A flow-limiting block, also annular in structure, is provided inside the dispensing cylinder. A flow-stopping block is provided in the middle of the flow-limiting block, and the bottom of the push rod passes through the flow-stopping block. The bottom of the push rod has a frustum-shaped structure.

[0007] The dispensing head is equipped with a valve structure, which includes a flow-limiting ring, a flow-limiting plate, and a spring. The flow-limiting ring is installed inside the dispensing head, and the flow-limiting plate is located below the flow-limiting ring and its size corresponds to the size of the inner ring of the flow-limiting ring. A spring slot is provided below the flow-limiting ring, and the spring is installed in the spring slot. A connecting rod is provided on the flow-limiting plate, and the connecting rod is connected to one end of the spring.

[0008] Preferably, a sealing ring is provided on the inner wall of the top rod insertion hole;

[0009] Preferably, a guide block is provided above the dispensing head, and the guide block is located inside the dispensing head connecting block.

[0010] Preferably, the bottom of the dispensing head connecting block is provided with a positioning groove, the dispensing head is provided with a positioning rod, and the outer periphery of the dispensing head connecting block is also provided with a dispensing head fixing cap.

[0011] Preferably, the bottom of the dispensing head is a closed structure, and the bottom of the dispensing head is provided with a plurality of through holes, which are arranged in a matrix at the bottom of the dispensing head.

[0012] The beneficial effects of this utility model are:

[0013] 1. By setting a valve structure inside the dispensing head, excess glue can be blocked from flowing down to the bottom of the flow limiting plate. The glue below the flow limiting plate will also be adsorbed on the inner wall of the dispensing head due to negative pressure. This can solve the problem of glue sticking or glue not being stopped in time during LED dispensing, resulting in too much glue being dispensed.

[0014] 2. By setting a positioning groove at the bottom of the dispensing head connecting block and setting a positioning rod on the dispensing head, the dispensing head is more convenient to assemble through the cooperation of the positioning rod and the positioning groove.

[0015] 3. By setting the bottom of the dispensing head to a closed structure and setting a through hole at the bottom of the dispensing head, this structure can solve the problem of uneven dispensing during normal use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present utility model.

[0017] Figure 2 for Figure 1 Enlarged view of the area circled in the middle;

[0018] Figure 3 This is a cross-sectional view of the dispensing head of this utility model;

[0019] Figure 4 This is a cross-sectional view of the adhesive tip in Embodiment 2 of this utility model.

[0020] In the diagram: 1. Dispensing cylinder; 1-1. Round hole; 1-2. Partition plate; 1-3. Top rod insertion hole; 1-4. Glue inlet; 2. Dispensing head; 2-1. Positioning rod; 2-2. Guide block; 3. Top rod; 4. Dispensing head connecting block; 4-1. Positioning groove; 5. Flow limiting block; 6. Flow stop block; 7. Valve structure; 7-1. Flow limiting ring; 7-2. Flow limiting plate; 7-3. Spring; 7-4. Spring slot; 7-5. Connecting rod; 8. Sealing ring; 9. Dispensing head fixing cap; 10. Through hole. Detailed Implementation

[0021] 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.

[0022] 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.

[0023] 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.

[0024] Example 1

[0025] Reference Figure 1-3 An LED dispensing device structure includes a dispensing cylinder 1, a dispensing head 2, and a push rod 3. The dispensing cylinder 1 has a circular hole 1-1 at the top center, a partition 1-2 inside the cylinder, and a push rod insertion hole 1-3 on the partition 1-2. The push rod 3 passes through both the circular hole 1-1 and the push rod insertion hole 1-3. The bottom of the dispensing cylinder 1 is open, and a dispensing head connecting block 4 with an annular structure is provided at the bottom opening. The dispensing head 2 is connected to the dispensing head connecting block 4. An adhesive inlet 1-4 is provided on the side of the dispensing cylinder 1. A flow-limiting block 5 with an annular structure is also provided inside the dispensing cylinder 1. A flow-stopping block 6 is provided in the middle of the flow-limiting block 5, and the bottom of the push rod 3 passes through the flow-stopping block 6. The bottom of the push rod 3 has a frustum-shaped structure.

[0026] A valve structure 7 is provided inside the dispensing head 2. The valve structure 7 includes a flow-limiting ring 7-1, a flow-limiting plate 7-2, and a spring 7-3. The flow-limiting ring 7-1 is installed inside the dispensing head 2. The flow-limiting plate 7-2 is located below the flow-limiting ring 7-1, and the size of the flow-limiting plate 7-2 corresponds to the size of the inner ring of the flow-limiting ring 7-1. A spring slot 7-4 is provided below the flow-limiting ring 7-1, and the spring 7-3 is installed in the spring slot 7-4. A connecting rod 7-5 is provided on the flow-limiting plate 7-2, and the connecting rod 7-5 is connected to one end of the flow-limiting plate 7-3.

[0027] Preferably, a sealing ring 8 is provided on the inner wall of the top rod insertion hole 1-3;

[0028] Preferably, a guide block 2-2 is provided above the dispensing head 2, and the guide block 2-2 is located inside the dispensing head connecting block 4.

[0029] In actual operation, when the glue enters the dispensing cylinder 1, pressing down the push rod 3 will cause the bottom of the push rod 3 to separate from the stop block 6, allowing the glue to enter the dispensing head below. However, the glue will be blocked by the valve structure 7. As more and more glue enters through the glue inlets 1-4, the pressure inside the dispensing cylinder 1 increases. When the threshold is reached, the flow limiting plate 7-2 on the valve structure 7 will move downward against the elastic force of the spring 7-3. At this time, the glue will enter the bottom of the dispensing head 2 along the gap between the flow limiting plate 7-2 and the flow limiting ring 7-1, and will also affect the L located below the dispensing head. When the LED crystal board is dispensing adhesive, the push rod 3 rises and its bottom abuts against the stop block 6. At this time, the adhesive in the dispensing cylinder 1 will not enter the dispensing head 2 below. Under the action of the spring 7-3, the current limiting plate 7-2 will block the current limiting ring 7-1, preventing excess adhesive from flowing into the area below the current limiting plate 7-2. The adhesive below the current limiting plate 7-2 will also be adsorbed on the inner wall of the dispensing head 2 due to the negative pressure. This solves the problem of adhesive sticking or the inability to stop the adhesive in time during LED dispensing, resulting in excessive adhesive dispensing.

[0030] Example 2

[0031] Reference Figure 2 The difference between this embodiment and embodiment one is that a positioning groove 4-1 is provided at the bottom of the dispensing head connecting block 4, and a positioning rod 2-1 is provided on the dispensing head 2. The cooperation between the positioning rod 2-1 and the positioning groove 4-1 makes it easier to assemble the dispensing head 2. A dispensing head fixing cap 9 is also provided on the outer periphery of the dispensing head connecting block 4. By using the dispensing head fixing cap 9 for fixing, the dispensing head 2 and the dispensing cylinder 1 fit more tightly, and disassembly is also more convenient.

[0032] Example 3

[0033] Reference Figure 4The difference between this embodiment and embodiment one is that the bottom of the dispensing head 2 is a closed structure, and a number of through holes 10 are provided at the bottom of the dispensing head 2. The number of through holes 10 are arranged in a matrix at the bottom of the dispensing head 2. This structure can solve the problem of uneven dispensing during normal use.

Claims

1. A structure of a dispenser for LED, comprising a dispenser barrel (1), a dispenser head (2) and a ejector rod (3), characterized in that, The dispensing cylinder (1) has a round hole (1-1) at the top center. A partition (1-2) is provided inside the dispensing cylinder (1). A top rod insertion hole (1-3) is provided on the partition (1-2). The top rod (3) passes through the round hole (1-1) and the top rod insertion hole (1-3) respectively. The bottom of the dispensing cylinder (1) is an open structure. A dispensing head connecting block (4) is provided at the bottom opening of the dispensing cylinder (1). The dispensing head connecting block (4) is an annular structure. The dispensing head (2) is connected to the dispensing head connecting block (4). An glue inlet (1-4) is provided on the side of the dispensing cylinder (1). A flow limiting block (5) is also provided inside the dispensing cylinder (1). The flow limiting block (5) is an annular structure. A flow stop block (6) is provided in the middle of the flow limiting block (5). The bottom of the top rod (3) passes through the flow stop block (6). The bottom of the top rod (3) is a frustum structure. The dispensing head (2) is provided with a valve structure (7), which includes a flow-limiting ring (7-1), a flow-limiting plate (7-2), and a spring (7-3). The flow-limiting ring (7-1) is installed inside the dispensing head (2). The flow-limiting plate (7-2) is located below the flow-limiting ring (7-1), and the size of the flow-limiting plate (7-2) corresponds to the size of the inner ring of the flow-limiting ring (7-1). A spring slot (7-4) is provided below the flow-limiting ring (7-1), and the spring (7-3) is installed in the spring slot (7-4). A connecting rod (7-5) is provided on the flow-limiting plate (7-2), and the connecting rod (7-5) is connected to one end of the spring (7-3).

2. The structure of an LED dispensing device according to claim 1, characterized in that, A sealing ring (8) is provided on the inner wall of the top rod insertion hole (1-3).

3. The structure of an LED dispensing device according to claim 2, characterized in that, A guide block (2-2) is provided above the dispensing head (2), and the guide block (2-2) is located inside the dispensing head connecting block (4).

4. The structure of an LED dispensing device according to claim 1, characterized in that, The bottom of the dispensing head connecting block (4) is provided with a positioning groove (4-1), the dispensing head (2) is provided with a positioning rod (2-1), and the outer periphery of the dispensing head connecting block (4) is also provided with a dispensing head fixing cap (9).

5. The structure of an LED dispensing device according to claim 1, characterized in that, The bottom of the dispensing head (2) is a closed structure, and the bottom of the dispensing head (2) is provided with several through holes (10), which are arranged in a matrix at the bottom of the dispensing head (2).

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