Automatic diode chip pasting device
Patent Information
- Application Number
- CN202521580458.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-28
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-07-28
AI Technical Summary
主要问题体现在：传统气动夹具对异形或微型焊盘的夹持力分布不均匀，导致贴装位置偏移；刚性夹持机构难以自适应不同厚度的PCB基板，在超薄板（0.3mm以下）作业时易产生变形；现有视觉系统对哑光或高反光焊盘表面的识别准确率下降，需多次重复对位，严重影响生产效率
1、本实用新型中，首先打开上盖，旋转手柄会带动与连接器固定连接的螺纹杆转动，配合固定架、限位板块、螺丝钉一，可控制外侧连接的夹具的垂直夹紧或松开动作，实现了对焊盘模具的柔性化精准夹持，将贴片定位精度提升，其模块化调节结构不仅适应不同规格模具的快速切换，还能有效防止PCB板损伤，显著提高了生产良率和设备通用性。
Smart Images
Figure CN224924151U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of precision mechanical engineering technology, and in particular to an automatic diode chip mounting device. Background Technology
[0002] Automated diode chip mounting systems are primarily used in the electronics manufacturing industry, especially in scenarios requiring efficient and precise assembly of diode chips. For example, on large-scale production lines for electronic products such as smartphones, computer motherboards, and LED lighting equipment, this device can quickly and accurately mount tiny diode chips onto PCBs, significantly improving production efficiency and avoiding errors caused by manual operation. It is particularly suitable for high-precision, high-speed automated production environments, helping manufacturers reduce costs and ensure product consistency, making it an indispensable key piece of equipment in modern electronics manufacturing.
[0003] Currently available automated diode chip placement equipment employs a modular, high-precision design. Its mechanical structure primarily consists of a high-speed linear motor-driven XYZ three-axis motion platform, a multi-nozzle rotary placement head, a vision positioning system, and a vibratory feeding mechanism. Technically, the device acquires images of the PCB board using a high-resolution CCD camera. The feeding end utilizes a piezoelectric ceramic-driven vibratory feeder in conjunction with a precision dispensing mechanism to ensure consistent polarity of the diode chips. During placement, the vacuum nozzle precisely picks up the chip under a negative pressure control system (vacuum level up to -90kPa). The linear motor platform moves rapidly at an acceleration of 2m / s², with a laser displacement sensor calibrating the Z-axis height in real time. Finally, a servo pressing mechanism applies a programmable contact force (typically adjustable from 3-10N) to complete the placement. Advanced models also integrate infrared temperature monitoring and 3D solder paste detection functions, achieving a placement accuracy of ±25μm for 0201 package chips and a production efficiency of up to 60,000 CPH, meeting the production needs of high-reliability fields such as automotive electronics.
[0004] Current devices still have some significant limitations in practical applications, especially when dealing with diverse pad molds. The main problems are: traditional pneumatic clamps exhibit uneven clamping force distribution on irregularly shaped or miniature pads, leading to placement position misalignment; rigid clamping mechanisms struggle to adapt to PCB substrates of varying thicknesses, and are prone to deformation when working with ultra-thin boards (below 0.3mm); and existing vision systems show reduced accuracy in recognizing matte or highly reflective pad surfaces, requiring repeated alignment and severely impacting production efficiency. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides an automatic diode chip placement device, which aims to improve the ease of operation and process adaptability of the equipment, thereby further improving production efficiency and yield.
[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic diode chip mounting device, comprising a worktable, wherein a clamping assembly is fixedly connected to the middle of the worktable, and a quick-change assembly is provided on the upper surface of the worktable; The clamping assembly includes a base one, which is fixedly connected inside the workbench. A limiting plate is fixedly connected to the upper surface of the base one. A screw one is rotatably connected inside the limiting plate. A clamp is threadedly connected to one side of the outer wall of the screw one. A threaded rod is threadedly connected inside the limiting plate. A connector is fixedly connected to one side of the threaded rod. A handle is fixedly connected to the top of the connector. A screw three is threadedly connected inside the base one. A fixing frame is rotatably connected to the top of the screw three.
[0007] Furthermore, the quick-change assembly includes a bracket 1, which is fixedly connected to the upper surface of the workbench. A base 2 is fixedly connected to the top of the bracket 1, and an outer wall 2 is fixedly connected to the upper surface of the base 2. An movable slot is provided inside the outer wall 2, and a screw 2 is threadedly connected inside the outer wall 2. A column is slidably connected to the top of the outer wall 2, and a spring is slidably connected to the outside of the column. A column head is fixedly connected to the top of the column.
[0008] Furthermore, a display screen is fixedly connected to the outer wall surface of the workbench, and a support bracket is provided on the lower surface of the workbench.
[0009] Furthermore, the outer wall 2 is internally fixedly connected with a movable slot, and the bottom of the screw 2 is threadedly connected to the outer wall 2.
[0010] Furthermore, a column body is slidably connected to the inside of the outer wall, and a column head is fixedly connected to the top of the column body.
[0011] Furthermore, the workbench has a body on its upper surface, and a top cover is rotatably connected to the top of the body.
[0012] Furthermore, a switch is provided on the outside of the body, and a threaded rod is fixedly connected inside the connector.
[0013] Furthermore, a limiting plate is fixedly connected to one side of the clamp.
[0014] This utility model has the following beneficial effects: 1. In this utility model, the top cover is first opened, and rotating the handle will drive the threaded rod fixedly connected to the connector to rotate. With the help of the fixing frame, the limiting plate and the screw, the vertical clamping or loosening action of the clamp connected to the outside can be controlled, realizing flexible and precise clamping of the pad mold, improving the positioning accuracy of the chip. Its modular adjustment structure not only adapts to the rapid switching of different mold specifications, but also effectively prevents damage to the PCB board, significantly improving the production yield and equipment versatility.
[0015] 2. In this utility model, the suction nozzle first enters the movable slot inside the outer wall, and works with the column and spring to lock or release the suction nozzle, realizing the quick and accurate replacement of the suction nozzle, improving operating efficiency. The guiding role of the limiting slot ensures the stability of the replacement process, while the spring buffer mechanism effectively avoids component wear and extends the service life of the equipment. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of an automatic diode chip mounting device proposed in this utility model; Figure 2 This is a schematic diagram of the clamping component structure of an automatic diode chip placement device proposed in this utility model; Figure 3 This is a cross-sectional schematic diagram of the clamping assembly of an automatic diode chip placement device proposed in this utility model; Figure 4 This is a schematic diagram of the quick-change component structure of an automatic diode chip placement device proposed in this utility model; Figure 5 This is a cross-sectional schematic diagram of a quick-change component of an automatic diode chip placement device proposed in this utility model; Figure 6 for Figure 5 Enlarged view of point A in the middle.
[0017] Legend: 1. Workbench; 2. Handle; 3. Machine body; 4. Switch; 5. Top cover; 6. Connector; 7. Threaded rod; 8. Clamp; 9. Limiting plate; 10. Screw 1; 11. Fixing frame; 12. Base 1; 13. Base 2; 14. Outer wall 2; 15. Movable slot; 16. Screw 2; 17. Bracket 1; 18. Column head; 19. Column body; 20. Spring; 21. Display screen; 22. Bracket 2; 23. Screw 3. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Reference Figures 1-6 The present invention provides an embodiment of an automatic diode chip mounting device, comprising a worktable 1, a clamping assembly fixedly connected to the middle of the worktable 1, and a quick-change assembly provided on the upper surface of the worktable 1. The clamping assembly includes a base 12, which is fixedly connected inside the worktable 1. A limiting plate 9 is fixedly connected to the upper surface of the base 12. A screw 10 is rotatably connected inside the limiting plate 9. A clamp 8 is threadedly connected to one side of the outer wall of the screw 10. A threaded rod 7 is threadedly connected inside the limiting plate 9. A connector 6 is fixedly connected to one side of the threaded rod 7. A handle 2 is fixedly connected to the top of the connector 6. A screw 23 is threadedly connected inside the base 12. A fixing bracket 11 is rotatably connected to the top of the screw 23.
[0020] Specifically, the overall structure of the clamping assembly is stably installed inside the worktable 1 via a fixed connection to the base 12, ensuring the stability of the overall structure during operation. A limiting plate 9 is fixedly connected to the upper surface of the base 12. The limiting plate 9 serves a guiding and limiting function, constraining the movement trajectory of related components and preventing deviation during operation. A screw 10 is rotatably connected inside the limiting plate 9. The screw 10 can rotate to drive the threaded clamp 8, which has a clamping function, to move. Changing its position adjusts the clamping tightness of the workpiece. Simultaneously, the limiting plate... The internal part of block 9 is also threaded with a threaded rod 7 to transmit power. When the threaded rod 7 is rotated, it can drive the related structure to operate. The connector 6 is fixedly connected to one side of the threaded rod 7, connecting the threaded rod 7 and the handle 2 to realize the transmission of force. The handle 2 provides a gripping point for the operator to easily drive the threaded rod 7 to move by rotation. In addition, the screw 23 threaded inside the base 12 can be adjusted in height by rotation. The fixed bracket 11 rotatably connected to its top can work together with the clamp 8 to fix the workpiece, enhancing the stability of the clamping. Through the coordinated operation of various components, reliable clamping and position adjustment of the workpiece can be achieved.
[0021] Reference Figures 1-6 The quick-change assembly includes a bracket 17, which is fixedly connected to the upper surface of the workbench 1. A base 2 13 is fixedly connected to the top of the bracket 17. An outer wall 2 14 is fixedly connected to the upper surface of the base 2 13. The outer wall 2 14 has a movable slot 15 inside and a screw 2 16 threadedly connected inside. A column 19 is slidably connected to the top of the outer wall 2 14. A spring 20 is slidably connected to the outside of the column 19. A column head 18 is fixedly connected to the top of the column 19. The outer wall surface of the workbench 1 is fixedly connected to... The display screen 21, the lower surface of the workbench 1 is provided with a support 22, the inner wall 14 is fixedly connected with a movable slot 15, the bottom of the screw 16 is threadedly connected to the outer wall 14, the inner wall 14 is slidably connected with a column 19, the top of the column 19 is fixedly connected with a column head 18, the upper surface of the workbench 1 is provided with a body 3, the top of the body 3 is rotatably connected with a cover 5, the outer side of the body 3 is provided with a switch 4, the connector 6 is fixedly connected with a threaded rod 7, and the clamp 8 is fixedly connected to a limit plate 9 on one side.
[0022] Specifically, the quick-change component uses bracket 17 as its basic support structure, which is securely installed on the upper surface of workbench 1 via a fixed connection, providing a stable mounting base and ensuring overall rigidity during operation. Base 2 13 is fixedly connected to the top of bracket 17. Base 2 13 is the intermediate load-bearing component, directly connected to outer wall 2 14 at the top, serving as a connection and support. Outer wall 2 14 is the external frame of the component, and its internal movable slot 15 is a key structure for realizing the quick-change function, used to engage corresponding components to fix their positions, facilitating loading and unloading operations. Meanwhile, screws 2 16 are threadedly connected inside outer wall 2 14. The tightness can be adjusted by rotation to lock or loosen related components, enhancing the stability of the connection. The column 19, which is slidably connected to the top of the outer wall 14, can slide up and down inside the outer wall. The spring 20, which is slidably connected to the outside, realizes the reset function. When the column 19 is pressed down by an external force, the spring 20 is compressed. After the external force is removed, it pushes the column 19 back to its original position. The column head 18, which is fixedly connected to the top of the column 19, serves as the end effector and can be connected to the accessory to be replaced. Through the sliding of the column 19 and the cooperation of the movable slot 15, the accessory can be quickly installed and removed. Through the coordinated cooperation of various structures, the part achieves efficient and convenient quick replacement operation.
[0023] Working principle: When the equipment is used, open the top cover 5 and press the switch 4 to turn on the equipment. The diode chips are neatly arranged by the vibratory feeder or tape feeder. After reaching the target position, rotating the handle 2 will drive the threaded rod 7, which is threaded to the connector 6, to rotate. The rotation of the threaded rod 7 is converted into the axial movement of the fixed frame 11 through thread engagement. The fixed frame 11 drives the base 12 connected at both ends to move synchronously, thereby pushing the limit plate 9, which is slidably connected at the top, to extend and retract laterally. By adjusting the screw 10 inside the limit plate 9, the vertical clamping or loosening action of the clamp 8 connected at the bottom can be controlled, ultimately achieving precise clamping of the solder pad mold and improving the placement accuracy. When the nozzle needs to be replaced, the control device moves the nozzle along a fixed track to enter the movable slot 15 inside the outer wall 2 14. At the same time, the column head 18 inside the outer wall 2 14, as an active component, will cause the column body 19 fixedly connected to it to slide axially in the slot when it is pressed down or lifted. The movement of the column body 19 is achieved by the deformation of the spring 20 to lock or release the nozzle. At the same time, the limiting slot ensures the accuracy of the movement trajectory.
[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An automatic diode chip placement device, comprising a worktable (1), characterized in that: A clamping assembly is fixedly connected to the middle of the workbench (1), and a quick-change assembly is provided on the upper surface of the workbench (1). The clamping assembly includes a base (12), which is fixedly connected inside the workbench (1). A limiting plate (9) is fixedly connected to the upper surface of the base (12). A screw (10) is rotatably connected inside the limiting plate (9). A clamp (8) is threadedly connected to one side of the outer wall of the screw (10). A threaded rod (7) is threadedly connected inside the limiting plate (9). A connector (6) is fixedly connected to one side of the threaded rod (7). A handle (2) is fixedly connected to the top of the connector (6). A screw (23) is threadedly connected inside the base (12). A fixing frame (11) is rotatably connected to the top of the screw (23).
2. The diode chip automatic placement device according to claim 1, characterized in that: The quick-change assembly includes a bracket (17), which is fixedly connected to the upper surface of the workbench (1). A base (13) is fixedly connected to the top of the bracket (17). An outer wall (14) is fixedly connected to the upper surface of the base (13). An movable slot (15) is provided inside the outer wall (14). A screw (16) is threaded inside the outer wall (14). A column (19) is slidably connected to the top of the outer wall (14). A spring (20) is slidably connected to the outside of the column (19). A column head (18) is fixedly connected to the top of the column (19).
3. The diode chip automatic placement device according to claim 1, characterized in that: The workbench (1) has a display screen (21) fixedly connected to its outer wall surface, and a support bracket (22) is provided on the lower surface of the workbench (1).
4. The diode chip automatic placement device according to claim 2, characterized in that: The inner wall of the second (14) is fixedly connected to a movable slot (15), and the bottom of the screw (16) is threadedly connected to the outer wall of the second (14).
5. The diode chip automatic placement device according to claim 2, characterized in that: The outer wall (14) is internally slidably connected to a column (19), and the top of the column (19) is fixedly connected to a column head (18).
6. The diode chip automatic placement device according to claim 1, characterized in that: The upper surface of the workbench (1) is provided with a body (3), and the top of the body (3) is rotatably connected with a cover (5).
7. The diode chip automatic placement device according to claim 6, characterized in that: A switch (4) is provided on the outside of the body (3), and a threaded rod (7) is fixedly connected inside the connector (6).
8. The diode chip automatic placement device according to claim 1, characterized in that: The clamp (8) is fixedly connected to a limiting plate (9) on one side.