Non-contact element position correction mechanism
By using a non-contact component position correction mechanism with negative pressure adsorption and servo drive system, the problem of component damage caused by traditional mechanical contact is solved, achieving high-precision position and angle adjustment and ensuring the integrity of components.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAOXING LIANGJI SEMICON EQUIP CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-06-26
AI Technical Summary
Traditional component position correction mechanisms, which rely on mechanical contact, are prone to causing breakage, deformation, or scratches to small and fragile components. Existing technologies lack high-precision, non-contact position correction methods.
The components are fixed by negative pressure adsorption, combined with high-precision visual positioning and servo drive system. Non-contact position and angle adjustment is achieved through X-axis and Y-axis moving components and rotation correction components. The component position is identified by camera and precise adjustment is achieved by servo motor drive.
It achieves high-precision, non-contact position and angle adjustment of components, avoiding physical damage and improving correction accuracy and reliability.
Smart Images
Figure CN224419170U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of component manufacturing, and more specifically, it relates to a non-contact component position correction mechanism. Background Technology
[0002] In the automated placement process of electronic components, due to various factors such as nozzle accuracy errors, substrate positioning deviations, and equipment vibrations, components may experience planar position shifts after being placed in their predetermined positions. Traditional correction mechanisms typically use physical contact methods such as mechanical grippers or push rods to directly touch the components for adjustment. This method has significant drawbacks: for small and fragile components, mechanical contact can easily cause breakage, lead deformation, or surface scratches.
[0003] Therefore, there is an urgent need to develop a position correction technology that can avoid physical contact, achieve high precision, and be highly adaptable. Utility Model Content
[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a non-contact component position correction mechanism. This mechanism fixes components using negative pressure adsorption and combines high-precision visual positioning with a servo drive system to achieve precise, non-contact adjustment of components in planar position and rotation angle. This fundamentally avoids physical damage to components and improves correction accuracy and reliability.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: The non-contact component position correction mechanism includes a frame, a control board, and a camera connected to the control board. The camera can identify the position of the component to be corrected. The control board can compare the position of the component to be corrected with the position of the correct component. It also includes a slide plate. One end of the slide plate is provided with an X-axis moving component and a Y-axis moving component. The other end of the slide plate is provided with a rotation correction component. The output end of the rotation correction component is provided with a suction seat. The suction seat has a communicating suction hole and an air pump hole. The air pump hole is connected to a negative pressure pump through an air pipe. The X-axis moving component can drive the slide plate to move in the X-axis direction. The Y-axis moving component can drive the slide plate to move in the Y-axis direction. The rotation correction component can drive the suction seat to rotate.
[0006] The present invention is further configured such that: the rotation correction component includes a first servo motor and a rotary coupling, one end of the rotary coupling is fixedly connected to the output end of the first servo motor and the other end is provided with a connecting key, and the bottom of the suction seat is sleeved on the outer periphery of the connecting key and is provided with a limiting hole matching the connecting key.
[0007] The present invention is further configured such that: the height of the connecting key is greater than the thickness of the limiting hole, and a buffer spring is provided between the rotary coupling and the suction seat, the buffer spring being able to keep the suction seat in the highest position under natural conditions.
[0008] The present invention is further configured such that: a Y-axis base plate is provided below the slide plate; the slide plate is slidably connected to the Y-axis base plate via a Y-axis linear guide rail; the Y-axis base plate is slidably connected to the frame via an X-axis linear guide rail; the movement direction of the X-axis linear guide rail is parallel to the X-axis direction; and the movement direction of the Y-axis linear guide rail is parallel to the Y-axis direction.
[0009] The present invention is further configured such that: the Y-axis moving component includes a second servo motor, a first eccentric wheel, and a Y-axis limiting block; the first eccentric wheel is fixedly connected to the output end of the second servo motor; the Y-axis limiting block has a Y-axis limiting groove that matches the first eccentric wheel; the Y-axis limiting block is fixedly connected to the slide plate; and the rotation of the second servo motor, through the cooperation of the first eccentric wheel and the Y-axis limiting block, can drive the slide plate to move in the Y-axis direction.
[0010] The present invention is further configured such that: the X-axis moving component includes a third servo motor, a second eccentric wheel, and an X-axis limiting block; the second eccentric wheel is fixedly connected to the output end of the second servo motor; the X-axis limiting block has an X-axis limiting groove that matches the second eccentric wheel; the X-axis limiting block is fixedly connected to the Y-axis base plate; through the cooperation of the second eccentric wheel and the X-axis limiting block, the rotation of the second servo motor can drive the Y-axis base plate to move in the X-axis direction, and at the same time, the slide plate moves in the X-axis direction along with the Y-axis base plate.
[0011] In summary, this utility model has the following beneficial effects:
[0012] This invention fixes components by using a suction base with negative pressure adsorption. During the entire correction process, there is no rigid physical contact between the suction base and the components. During correction, the position of the slide can be adjusted by the operation of the X-axis moving component, Y-axis moving component, and rotation correction component, thus correcting the position of the components. This solves the problem that traditional mechanical contact correction mechanisms are prone to causing brittleness, breakage, deformation, and scratches of micro-components. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the structure of this utility model after removing part of the cover plate;
[0015] Figure 3 This is a schematic diagram of the suction seat and rotary coupling in this utility model.
[0016] In the diagram: 1. Frame; 2. Slide plate; 3. X-axis moving assembly; 4. Y-axis moving assembly; 5. Rotation correction assembly; 6. Suction seat; 7. Suction hole; 8. Air pump hole; 9. First servo motor; 10. Rotary coupling; 11. Connecting key; 12. Limiting hole; 13. Buffer spring; 14. Y-axis base plate; 15. Y-axis linear guide; 16. X-axis linear guide; 17. Second servo motor; 18. First eccentric wheel; 19. Y-axis limiting block; 20. Y-axis limiting groove; 21. Third servo motor; 22. Second eccentric wheel; 23. X-axis limiting block; 24. X-axis limiting groove. Detailed Implementation
[0017] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0018] Example: Non-contact component position correction mechanism, such as Figure 1 As shown, the system includes a rack 1, a control board, and a camera connected to the control board. The camera can identify the position of the component to be corrected, and the control board can compare the position of the component to be corrected with the position of the correct component. The control board, as the core control unit, is installed in rack 1 or a location convenient for wiring. The camera is electrically connected to the control board, and its function is to aim at the area of the component to be corrected, acquire the image information of the component, and transmit the data to the control board. The control board runs an image processing algorithm internally, and by analyzing the image transmitted back by the camera, accurately identifies the current actual position of the component to be corrected (including its coordinates in the X-axis and Y-axis planes and its angle around the Z-axis). The control board compares this actual position with the pre-set correct target position and calculates the positional deviation (ΔX, ΔY) of the component in the X and Y directions and the angular deviation (Δθ) around the Z-axis.
[0019] One end of the slide plate 2 is provided with an X-axis moving component 3 and a Y-axis moving component 4, and the other end of the slide plate 2 is provided with a rotation correction component 5. The output end of the rotation correction component 5 is provided with a suction seat 6. The suction seat 6 has a communicating suction hole 7 and an air pump hole 8. The air pump hole 8 is connected to a negative pressure pump through an air pipe. The X-axis moving component 3 can drive the slide plate 2 to move in the X-axis direction, and the Y-axis moving component 4 can drive the slide plate 2 to move in the Y-axis direction. The rotation correction component 5 can drive the suction seat 6 to rotate. The rotation correction component 5 includes a first servo motor 9 and a rotary coupling 10. One end of the rotary coupling 10 is fixedly connected to the output end of the first servo motor 9, and the other end is provided with a connecting key 11. The bottom of the suction seat 6 is sleeved on the outer periphery of the connecting key 11 and is provided with a limiting hole 12 that matches the connecting key 11. Suction holes 7 are opened on the working surface of the suction seat 6. These suction holes 7 are used to generate suction force. The robot places the components at the suction holes 7 of the suction seat 6. The suction holes 7 are connected to the air pump hole 8 located inside or on the side of the suction seat 6. The air pump port 8 is connected to a negative pressure pump via a flexible air tube. When the negative pressure pump starts working, a negative pressure is generated at the suction port 7 through the air tube and air pump port 8. This negative pressure can gently and non-contactly attract the electronic components to be corrected, stably adhering them to the suction base 6.
[0020] The rotation correction assembly 5 is used to precisely adjust the rotation angle of the component around the Z-axis. The rotation correction assembly 5 includes a first servo motor 9 and a rotary coupling 10. One end of the rotary coupling 10 is firmly fixed to the output shaft of the first servo motor 9 and rotates with the motor shaft. The other end of the rotary coupling 10 is provided with a connecting key 11, which is a D-shaped protrusion structure.
[0021] The output end of the rotation correction component 5 is a suction cup 6. A limiting hole 12, perfectly matching the shape of the connecting key 11, is provided at the center of the bottom of the suction cup 6. The suction cup 6 is fitted onto the outer circumference of the connecting key 11 through this limiting hole 12. After the connecting key 11 is inserted into the limiting hole 12, the rotational torque of the first servo motor 9 can be effectively transmitted to the suction cup 6 through the rotary coupling 10 and the connecting key 11, driving the suction cup 6 to rotate precisely around the Z-axis. To ensure the reliability of the connection and the transmission accuracy, a buffer spring 13 is installed between the rotary coupling 10 and the suction cup 6. When the buffer spring 13 is not compressed, it can support and maintain the suction cup 6 at its highest stroke position. This provides flexible cushioning and reduces impact when the robot places components onto the suction cup 6.
[0022] A Y-axis base plate 14 is provided below the slide plate 2. The slide plate 2 is slidably connected to the Y-axis base plate 14 via a Y-axis linear guide rail 15. The Y-axis base plate 14 is slidably connected to the frame 1 via an X-axis linear guide rail 16. The movement direction of the X-axis linear guide rail 16 is parallel to the X-axis direction, and the movement direction of the Y-axis linear guide rail 15 is parallel to the Y-axis direction.
[0023] The Y-axis moving assembly 4 is responsible for driving the movement of the slide 2 in the Y-axis direction. This assembly includes a second servo motor 17, a first eccentric wheel 18 directly driven by the second servo motor 17, and a Y-axis limiting block 19 fixedly connected to the slide 2. The Y-axis limiting block 19 has a Y-axis limiting groove 20 that precisely matches the contour of the first eccentric wheel 18. When the second servo motor 17 rotates, it drives the first eccentric wheel 18 to rotate. Due to the non-central structure of the eccentric wheel, its outer edge periodically abuts against and pushes against the inner wall of the Y-axis limiting groove 20 during rotation. This pushing action is transmitted to the slide 2 through the Y-axis limiting block 19, thereby converting the rotational motion of the second servo motor 17 into a precise linear displacement of the slide 2 in the Y-axis direction.
[0024] The X-axis moving assembly 3 is responsible for driving the movement of the Y-axis base plate 14 and the slide plate 2 thereon in the X-axis direction. This assembly includes a third servo motor 21, a second eccentric wheel 22 directly driven by the third servo motor 21, and an X-axis limiting block 23 fixedly connected to the Y-axis base plate 14. The X-axis limiting block 23 has an X-axis limiting groove 24 that matches the contour of the second eccentric wheel 22. The third servo motor 21 drives the second eccentric wheel 22 to rotate, and the outer edge of the eccentric wheel pushes the inner wall of the X-axis limiting groove 24, thereby pushing the X-axis limiting block 23 and the Y-axis base plate 14 fixed thereto, ultimately converting the rotational motion of the third servo motor 21 into a precise linear displacement of the Y-axis base plate 14 (and the slide plate 2) in the X-axis direction.
[0025] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. A non-contact component position correction mechanism, comprising a frame (1), a control board, and a camera connected to the control board, wherein the camera is capable of identifying the position of the component to be corrected, and the control board is capable of comparing the position of the component to be corrected with the position of the correct component, characterized in that: It also includes a slide (2), one end of which is provided with an X-axis moving component (3) and a Y-axis moving component (4), and the other end of which is provided with a rotation correction component (5). The output end of the rotation correction component (5) is provided with a suction seat (6). The suction seat (6) is provided with a suction hole (7) and an air pump hole (8) that are connected to each other. The air pump hole (8) is connected to a negative pressure pump through an air pipe. The X-axis moving component (3) can drive the slide (2) to move in the X-axis direction, the Y-axis moving component (4) can drive the slide (2) to move in the Y-axis direction, and the rotation correction component (5) can drive the suction seat (6) to rotate.
2. The non-contact component position correction mechanism according to claim 1, characterized in that: The rotation correction component (5) includes a first servo motor (9) and a rotary coupling (10). One end of the rotary coupling (10) is fixedly connected to the output end of the first servo motor (9), and the other end is provided with a connecting key (11). The bottom of the suction seat (6) is sleeved on the outer periphery of the connecting key (11) and is provided with a limiting hole (12) that matches the connecting key (11).
3. The non-contact component position correction mechanism according to claim 2, characterized in that: The height of the connecting key (11) is greater than the thickness of the limiting hole (12). A buffer spring (13) is provided between the rotary coupling (10) and the suction seat (6). The buffer spring (13) can keep the suction seat (6) in the highest position in its natural state.
4. The non-contact component position correction mechanism according to claim 1, characterized in that: A Y-axis base plate (14) is provided below the slide plate (2). The slide plate (2) is slidably connected to the Y-axis base plate (14) via a Y-axis linear guide rail (15). The Y-axis base plate (14) is slidably connected to the frame (1) via an X-axis linear guide rail (16). The movement direction of the X-axis linear guide rail (16) is parallel to the X-axis direction, and the movement direction of the Y-axis linear guide rail (15) is parallel to the Y-axis direction.
5. The non-contact component position correction mechanism according to claim 4, characterized in that: The Y-axis moving component (4) includes a second servo motor (17), a first eccentric wheel (18), and a Y-axis limiting block (19). The first eccentric wheel (18) is fixedly connected to the output end of the second servo motor (17). The Y-axis limiting block (19) is provided with a Y-axis limiting groove (20) that matches the first eccentric wheel (18). The Y-axis limiting block (19) is fixedly connected to the slide plate (2). Through the cooperation of the first eccentric wheel (18) and the Y-axis limiting block (19), the rotation of the second servo motor (17) can drive the slide plate (2) to move in the Y-axis direction.
6. The non-contact component position correction mechanism according to claim 5, characterized in that: The X-axis moving component (3) includes a third servo motor (21), a second eccentric wheel (22), and an X-axis limiting block (23). The second eccentric wheel (22) is fixedly connected to the output end of the second servo motor (17). The X-axis limiting block (23) is provided with an X-axis limiting groove (24) that matches the second eccentric wheel (22). The X-axis limiting block (23) is fixedly connected to the Y-axis base plate (14). Through the cooperation of the second eccentric wheel (22) and the X-axis limiting block (23), the rotation of the second servo motor (17) can drive the Y-axis base plate (14) to move in the X-axis direction. At the same time, the slide plate (2) moves in the X-axis direction along with the Y-axis base plate (14).