Chip mounter suction nozzle and suction structure of LED chip mounter
By designing a pick-and-place machine nozzle with branch channels and main channels, the problem of difficulty in picking up two-in-one LED chips was solved, achieving high-precision and high-efficiency LED chip placement, improving production efficiency and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN ABSEN OPTOELECTRONIC CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-28
AI Technical Summary
Traditional pick-and-place machine nozzles have difficulty effectively picking up two-in-one LED chips, resulting in poor placement accuracy and low production efficiency.
Design a pick-and-place machine nozzle with two spaced-apart suction ports, internal branch channels and main channels to ensure uniform suction force, and equipped with seals and anti-reflective plates to stabilize the airflow channel, adapting to the suction needs of multi-functional LED chips.
It achieves stable pick-up of multi-functional LED chips, prevents device deflection, improves mounting accuracy and production efficiency, and reduces material rejection rate and production cost.
Smart Images
Figure CN224571693U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of pick-and-place machine technology, and more specifically, relates to a pick-and-place machine nozzle and LED pick-and-place lamp pickup structure. Background Technology
[0002] In the LED display manufacturing industry, traditional single-lamp LED chips have long been widely used as basic components. During the placement process, the pick-and-place machine only needs to pick up and place one chip at a time, making the operation relatively simple and straightforward. However, with the industry's increasing demands for soldering strength and production efficiency, two-in-one LED chips have emerged. This new type of chip encapsulates two single lamps into a single, elongated component. While improving soldering reliability and production efficiency, it also brings new challenges to the placement process.
[0003] When using a traditional single-hole nozzle, the nozzle can only adhere to one LED chip at a time, leading to an imbalance in the force applied to the device. This causes rotational misalignment during pickup and transfer, severely impacting placement accuracy. Furthermore, this asymmetrical adhesion method significantly increases the rejection rate, raising production costs and reducing overall production efficiency. Utility Model Content
[0004] This application provides a pick-and-place machine nozzle and an LED chip lamp pick-up structure to solve the technical problems of difficulty in picking up two-in-one LED chips and poor placement accuracy in the prior art.
[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:
[0006] A pick-and-place machine nozzle is provided, comprising:
[0007] Base for connecting to the pick-and-place machine;
[0008] The nozzle body has one end connected to the base and the other end provided with at least two suction ports, which are arranged at a preset interval. The nozzle body has a branch channel corresponding to the number of suction ports. One end of the branch channel is connected to the corresponding suction port, and the other end of the branch channel merges into the main channel.
[0009] As a further improvement to the above technical solution:
[0010] Optionally, the nozzle body is further provided with a converging channel, wherein the main channel and the branch channels extend along the axial direction of the nozzle body, the converging channel extends along the radial direction of the nozzle body, and the main channel and each of the branch channels converge at the converging channel.
[0011] Optionally, the pick-and-place nozzle includes a seal mounted at both ends of the manifold to seal both ends of the manifold.
[0012] Optionally, the end face of the suction nozzle body is provided with a groove, which is located between each of the suction ports.
[0013] Optionally, the diameter of the suction port is smaller than the diameter of the adsorption surface of the element being suctioned.
[0014] Optionally, each of the inhalation ports is arranged sequentially along a straight line at a preset interval.
[0015] Optionally, the pick-and-place machine nozzle also includes an anti-reflective plate, which is connected to the base. One end of the nozzle body is connected to the base, and the other end of the nozzle body passes through the anti-reflective plate. The base is located on one side of the anti-reflective plate, and the end of the nozzle body with the suction port is located on the other side of the anti-reflective plate.
[0016] Optionally, the anti-reflective plate is provided with a through hole, and one end of the nozzle body is provided with a flange extending in the radial direction. The nozzle body passes through the anti-reflective plate through the through hole, and the diameter of the flange is larger than the diameter of the through hole.
[0017] Optionally, the axial projection of the base is located within the axial projection range of the anti-reflective plate.
[0018] The advantages of the pick-and-place machine nozzle provided in this application are as follows:
[0019] The pick-and-place machine nozzle provided in this application includes a base and a nozzle body. The base is used to achieve a reliable connection with the pick-and-place machine body, and the nozzle body is fixedly connected to the bottom of the base. The bottom of the nozzle body has two spaced-apart suction ports, the spacing of which matches the center-to-center distance of the two LEDs on a standard two-in-one LED chip. This ensures that a uniform suction force is applied to both LEDs simultaneously during the pick-up process, effectively preventing device deflection during transfer. The nozzle body has two independent branch channels inside, each connected to a corresponding suction port. The two branch channels merge at the top to form a single main channel. This airflow design ensures both uniform distribution of suction force and stable operation of the vacuum system.
[0020] This application also provides an LED chip lamp pick-up structure, including a chip lamp and the above-mentioned pick-and-place machine nozzle. The chip lamp includes at least two LED beads, and the top surface of the LED beads has a curved surface formed by curing encapsulating adhesive. The pick-and-place machine nozzle has a suction port corresponding to the number and position of the LED beads. When the pick-and-place machine nozzle picks up the LED chip lamp, the suction port contacts the curved surface on the LED beads. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 A cross-sectional view of the pick-and-place machine nozzle provided in this application;
[0023] Figure 2 This is a schematic diagram of the structure of the pick-and-place machine nozzle and the LED chip being picked up when they are misaligned, as provided in this application.
[0024] Figure 3 This is a schematic diagram of the structure of the pick-and-place machine nozzle and the picked-up LED beads when automatically aligned.
[0025] The following are the labeling elements in the figure:
[0026] 1. Base; 2. Suction nozzle body;
[0027] 21. Inlet; 22. Branch channel;
[0028] 23. Mainstream channel; 24. Converging channel;
[0029] 25. Groove; 26. Flange;
[0030] 3. Sealing components; 4. Anti-reflective panels. Detailed Implementation
[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0032] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", 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.
[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0035] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of this utility model.
[0036] In subsequent descriptions, the direction closer to the operator is generally defined as the proximal end, and the direction farther from the operator is defined as the distal end.
[0037] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0038] To address the technical problems of difficult pick-up and insufficient mounting accuracy in the surface mount technology of dual-in-one LED chips, such as... Figure 1 As shown, this application provides a pick-and-place machine nozzle, specifically including a base 1 and a nozzle body 2.
[0039] The base 1 is used to reliably connect to the main body of the pick-and-place machine, while the nozzle body 2 is fixedly connected to the bottom of the base 1. The bottom of the nozzle body 2 has two spaced-apart suction ports 21, the spacing of which matches the center-to-center distance of the two LEDs on a standard two-in-one LED chip. This ensures that a uniform suction force is applied to both LEDs simultaneously during the pick-up process, effectively preventing device deflection during transfer. The nozzle body 2 has two independent branch channels 22 inside, each connected to a corresponding suction port 21. The two branch channels 22 converge at the top to form a single main channel 23. This airflow design ensures both uniform distribution of suction force and stable operation of the vacuum system.
[0040] It is worth noting that the technical solution of this application is not limited to the suction operation of two-in-one LED beads. By appropriately increasing the number of suction ports 21 and adjusting their spacing accordingly, the suction nozzle structure is also applicable to the mounting needs of multi-LED bead combination devices such as three-in-one and four-in-one. Such modified implementations based on the same design principle should be included within the protection scope of this application.
[0041] like Figure 1 As shown in a specific embodiment of this application, the nozzle body 2 is further provided with a converging flow channel 24. The main flow channel 23 extends along the axial centerline of the nozzle body 2, two branch flow channels 22 are parallel to the main flow channel 23 and symmetrically arranged on both sides, and the converging flow channel 24 is arranged radially along the nozzle body 2. Through this arrangement, the main flow channel 23 and each branch flow channel 22 are reliably connected at the converging flow channel 24, forming a complete airflow channel network. From a manufacturing process perspective, the nozzle body 2 adopts a step-by-step drilling method: first, the main flow channel 23 is drilled along the axial direction of the nozzle body 2 from one end; then, two branch flow channels 22 are drilled from the opposite end; finally, the converging flow channel 24 is drilled radially, ensuring that the flow channels accurately converge at predetermined positions. This not only guarantees the sealing and airflow smoothness of the flow channel system but also has advantages such as simple process, high processing accuracy, and low production cost, making it suitable for mass production needs.
[0042] like Figure 1 As shown, in one specific embodiment of this application, the pick-and-place machine nozzle includes a seal 3. The seal 3 is disposed at both ports of the confluence channel 24 to achieve a reliable seal at the ends of the confluence channel 24. Specifically, the seal 3 can be a cylindrical metal pin structure, fixed to the port positions of the confluence channel 24 by interference fit or threaded connection. It effectively prevents vacuum leakage, ensures the sealing performance of the internal airflow channel of the nozzle, and, being made of metal, possesses high mechanical strength and wear resistance, adapting to the high-speed continuous operation requirements of the pick-and-place machine. In actual assembly, the seal 3 should be installed after the processing of each channel to ensure the integrity and sealing effect of the internal airflow passage of the confluence channel 24.
[0043] like Figure 1 As shown in a specific embodiment of this application, a groove 25 is provided on the end face of the suction nozzle body 2, and the groove 25 is disposed between each suction port 21. On the one hand, by reducing the actual contact area between the end face of the suction nozzle and the surface of the LED bead, the frictional resistance between the two is effectively reduced; on the other hand, the clearance space formed by the groove 25 can avoid structural interference between the suction nozzle and the LED bead, especially when there are adhesive or other protruding features on the surface of the LED bead. This design not only ensures the stability of the adsorption process, but also avoids damage to the LED bead or positional displacement caused by excessive contact pressure, thereby significantly improving the mounting accuracy and reliability.
[0044] like Figure 1 As shown, in one specific embodiment of this application, the diameter of the suction port 21 is smaller than the diameter of the adsorption surface of the element being attracted, thereby effectively preventing pressure leakage during the adsorption process and ensuring the concentration and stability of the adsorption force. In practical applications, the surface of the LED bead usually forms a curved structure with micro-protrusions or micro-recesses after the adhesive dispensing treatment.
[0045] The dual suction inlet 21 structure of the nozzle body 2, through the synergistic effect of the two suction points, can simultaneously apply a balanced suction force to the LED beads. This structure ensures that the LED beads will not rotate or shift in the horizontal plane or tilt in the vertical direction during the suction process.
[0046] It is worth noting that, such as Figure 2 and Figure 3 As shown, even if there is a slight misalignment in the initial absorption stage, the gap formed between the suction port 21 and the surface of the lamp bead colloid will cause the adsorption state to be temporarily unstable. However, under the action of negative pressure, the fine adjustment force generated by the airflow will cause the lamp bead to automatically adjust its position, and finally achieve self-correction alignment with the suction port 21.
[0047] like Figure 1 As shown in one specific embodiment of this application, the suction ports 21 of the nozzle body 2 are arranged in a linear array, and the center distance of each suction port 21 maintains a strict correspondence with the actual arrangement spacing of the LEDs in the multi-in-one LED product. This arrangement ensures that each suction port 21 is accurately aligned with each independent LED unit of the multi-in-one LED product, achieving synchronous adsorption. This suction port 21 arrangement scheme, which matches the LED arrangement, effectively solves the balance problem during synchronous adsorption of multiple LEDs, avoiding offset or rotation caused by uneven force, thereby improving the success rate of placement and positional accuracy.
[0048] like Figure 1 As shown, in one specific embodiment of this application, the pick-and-place machine nozzle further includes an anti-reflective plate 4, which is connected to the base 1. One end of the nozzle body 2 is connected to the base 1, and the other end of the nozzle body 2 passes through the anti-reflective plate 4. Specifically, the base 1 is located on one side of the anti-reflective plate 4, while the working end of the nozzle body 2 with the suction port 21 is located on the opposite side of the anti-reflective plate 4. The anti-reflective plate 4 is made of black polyoxymethylene (POM) material, which has wear-resistant and anti-static properties, and its surface is treated to reduce light reflectivity. In practical applications, the anti-reflective plate 4 can effectively reduce the light interference that the pick-and-place machine's vision inspection system may experience during operation, especially preventing the reflection generated by the metal surface of the base 1 from affecting the visual positioning accuracy. In addition to POM material, other black wear-resistant and anti-static polymer materials with similar properties can also be used to manufacture the anti-reflective plate 4, and all are within the scope of protection of this application.
[0049] like Figure 1 As shown, in one specific embodiment of this application, the anti-reflective plate 4 is provided with a through hole, the diameter of which matches the outer diameter of the suction nozzle body 2. One end of the suction nozzle body 2 is provided with a flange 26 extending in the radial direction. The flange 26 and the suction nozzle body 2 are integrally structured, and the diameter of the flange 26 is larger than the diameter of the through hole on the anti-reflective plate 4.
[0050] like Figure 1 As shown in one specific embodiment of this application, when viewed from the axial projection direction, the spatial relationship between the base 1 and the anti-reflective plate 4 is such that the outline of the base 1 is completely within the projection range of the anti-reflective plate 4. This arrangement ensures that the anti-reflective plate 4 can completely block all exposed parts of the base 1. Specifically, the radial dimension of the anti-reflective plate 4 is larger than the maximum outer diameter of the base 1, and the excess portion forms an effective light-blocking area. This allows the anti-reflective plate 4 to completely block the reflection from the metal surface of the base 1 when the pick-and-place machine vision system is working, avoiding interference with optical positioning.
[0051] This application also provides an LED chip lamp pick-up structure, including a chip lamp and the pick-and-place machine nozzle described in the above embodiment. This LED chip lamp pick-up structure is used to pick up a two-in-one chip lamp composed of two single lamps packaged into a single unit. The spacing between the two suction ports 21 on the pick-and-place machine nozzle corresponds to the spacing between the two LEDs on the two-in-one chip lamp, thereby ensuring that a uniform adsorption force can be applied to both LEDs simultaneously during the pick-up process, effectively preventing device deflection during transfer.
[0052] The top surface of the LED chip has a curved surface formed by the curing of encapsulating adhesive. When the pick-and-place machine's nozzle picks up the LED chip lamp, the suction port 21 contacts the curved surface on the LED chip. By simultaneously applying suction force to the LED chip at two suction points, the LED chip is prevented from rotating or shifting horizontally or tilting vertically during the suction process. Even if there is a slight misalignment in the initial suction stage, the fine-tuning force generated by the airflow under negative pressure will cause the LED chip to automatically adjust its position, ultimately achieving self-correcting alignment with the suction port 21.
[0053] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A pick-and-place machine nozzle, characterized in that, include: Base (1), used for connection to the pick and place machine; The nozzle body (2) is connected to the base (1) at one end and has at least two suction ports (21) at the other end. The suction ports (21) are arranged at a preset interval. The nozzle body (2) has a branch channel (22) corresponding to the number of suction ports (21). One end of the branch channel (22) is connected to the corresponding suction port (21), and the other end of the branch channel (22) merges into the main channel (23).
2. The pick-and-place machine nozzle as described in claim 1, characterized in that, The nozzle body (2) is further provided with a converging flow channel (24). The main flow channel (23) and the branch flow channels (22) extend along the axial direction of the nozzle body (2), and the converging flow channel (24) extends along the radial direction of the nozzle body (2). The main flow channel (23) and each of the branch flow channels (22) converge in the converging flow channel (24).
3. The pick-and-place machine nozzle as described in claim 2, characterized in that, Includes a seal (3) which is installed at both ends of the confluence channel (24) to seal both ends of the confluence channel (24).
4. The pick-and-place machine nozzle as described in claim 1, characterized in that, The nozzle body (2) has a groove (25) on its end face, and the groove (25) is located between each of the suction ports (21).
5. The pick-and-place machine nozzle as described in claim 1, characterized in that, The diameter of the suction port (21) is smaller than the diameter of the adsorption surface of the element being suctioned.
6. The pick-and-place machine nozzle as described in claim 1, characterized in that, Each of the inhalation ports (21) is arranged sequentially along a straight line at a preset interval.
7. The pick-and-place machine nozzle as described in any one of claims 1 to 6, characterized in that, It also includes an anti-reflective plate (4), which is connected to the base (1). One end of the suction nozzle body (2) is connected to the base (1), and the other end of the suction nozzle body (2) passes through the anti-reflective plate (4). The base (1) is located on one side of the anti-reflective plate (4), and the end of the suction nozzle body (2) with the suction port (21) is located on the other side of the anti-reflective plate (4).
8. The pick-and-place machine nozzle as described in claim 7, characterized in that, The anti-reflective plate (4) is provided with a through hole, and one end of the suction nozzle body (2) is provided with a flange (26) extending in the radial direction. The suction nozzle body (2) passes through the anti-reflective plate (4) through the through hole, and the diameter of the flange (26) is larger than the diameter of the through hole.
9. The pick-and-place machine nozzle as described in claim 7, characterized in that, The projection of the base (1) along the axial direction is located within the projection range of the anti-reflective plate (4) along the axial direction.
10. An LED chip lamp's absorption structure, characterized in that, The device includes a surface mount LED and a pick-and-place machine nozzle as described in any one of claims 1 to 9. The surface mount LED includes at least two LEDs, and the top surface of each LED has a curved surface formed by curing encapsulant. The pick-and-place machine nozzle has a suction port (21) corresponding to the number and position of the LEDs. When the pick-and-place machine nozzle picks up the LED surface mount LED, the suction port (21) contacts the curved surface on the LED.