Chip mounter capable of automatically correcting offset of mainboard element
By using a pick-and-place machine that automatically corrects the misalignment of motherboard components, and employing a servo motor-driven bidirectional lead screw and roller assembly, the problem of motherboard positional shift during transport is solved, achieving precise placement and stable product quality.
Patent Information
- Application Number
- CN202423215712.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2034-12-25
AI Technical Summary
During the transport process of existing pick-and-place machines, the motherboard may shift due to factors such as vibration or friction, resulting in inconsistent placement positions, increasing the risk of errors, and affecting the stability of product quality.
The pick-and-place machine employs automatic correction of motherboard component misalignment. It uses a servo motor to drive a bidirectional lead screw and roller assembly to precisely correct the motherboard position, ensuring that the starting position of each placement is consistent. The machine includes a correction component, a servo motor, a first bidirectional lead screw, a drive belt assembly, a moving frame, rollers, and torsion springs, and is adaptable to motherboards of different sizes.
This achieves precise positioning of the motherboard, reduces surface mount errors, improves the versatility and flexibility of the equipment, and ensures consistent product quality.
Smart Images
Figure CN223899420U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of surface mount technology, and in particular relates to a surface mount machine that automatically corrects the misalignment of motherboard components. Background Technology
[0002] The motherboard is the core circuit board of a computer or other electronic device, responsible for connecting and coordinating the operation of various hardware components. A variety of electronic components are mounted on the motherboard, which together form the system's functional modules. To meet the miniaturization, high performance, and high reliability requirements of modern electronic products, these electronic components are mounted using surface mount technology.
[0003] Most existing pick-and-place machines typically use a conveyor mechanism to horizontally transport the motherboard to the placement area, and then mount the electronic components onto the motherboard according to a preset program. However, during the transport process, the motherboard may shift slightly due to vibration, friction, or other external factors, causing it to not align accurately when it arrives at the placement area. This shift results in slight differences in the position of each motherboard, leading to inconsistent starting positions for each placement, increasing the risk of errors during the placement process, and affecting the overall quality stability of the product.
[0004] Therefore, there is a particular need for a pick-and-place machine that can automatically correct the misalignment of motherboard components to solve the above problems. Utility Model Content
[0005] To overcome the shortcomings of most existing pick-and-place machines, where the motherboard may shift during transport, leading to inconsistent placement positions, increased error risk, and affecting product quality stability, this utility model provides a pick-and-place machine that automatically corrects motherboard component shift.
[0006] This utility model is achieved through the following technical means: a pick-and-place machine for automatically correcting the misalignment of motherboard components, comprising a bracket, a worktable, a pick-and-place base, vertical plates, a first electric slide rail, a first electric slider, a second electric slide rail, a second electric slider, an automatic pick-and-place assembly, and an integrated controller. Two brackets are symmetrically distributed and fixed to the left and right sides of the worktable. The pick-and-place base is installed at the top right of the worktable. Two vertical plates are symmetrically distributed and fixed to the top left and right sides of the worktable. The first electric slide rail is installed between the upper parts of the two vertical plates. The first electric slider is connected to the first electric slide rail. The second electric slide rail is installed below the first electric slider and connected to the second electric slide rail. The automatic pick-and-place assembly is installed below the second electric slider. The integrated controller is installed on the lower part of the left vertical plate, away from the pick-and-place base, and is electrically connected to the first electric slide rail, the first electric slider, the second electric slide rail, the second electric slider, and the automatic pick-and-place assembly. It also includes a correction component for correcting the motherboard position, which is disposed on the pick-and-place base.
[0007] Furthermore, preferably, the correction assembly includes a servo motor, a first bidirectional lead screw, a transmission belt assembly, a first moving frame, a second bidirectional lead screw, a second moving frame, an L-shaped block, rollers, a rotating shaft, and a torsion spring. The servo motor is mounted at the front center-left position of the worktable, with its output shaft facing rearward and electrically connected to the integrated controller. The two first bidirectional lead screws are distributed left and right and rotatably connected inside the worktable. The front end of the left first bidirectional lead screw is fixedly connected to the output shaft of the servo motor via a coupling. The transmission belt assembly is located between the rear ends of the two first bidirectional lead screws. The front ends of the two first moving frames are... The rear is symmetrical, threaded between the two first bidirectional lead screws and slidably connected to the worktable. Each second bidirectional lead screw is rotatably connected to the inside of each first movable frame. Every two second movable frames are symmetrically distributed, threaded between the outside of each second bidirectional lead screw and slidably connected to the corresponding first movable frame. Each rotating shaft is rotatably connected to each second movable frame. Each L-shaped block is fixed to the bottom end of each rotating shaft. Every two rollers are distributed at a 90-degree angle and rotatably connected to both ends of each L-shaped block. Each torsion spring is fixed between the corresponding second movable frame and the corresponding L-shaped block and sleeved on the outside of the corresponding rotating shaft.
[0008] Furthermore, it is particularly preferred that the device also includes knobs, each knob being fixed to the left end of each second bidirectional lead screw, and the knobs having a hexagonal structure with a recess on each side.
[0009] Furthermore, it is particularly preferred that the support and the worktable form a 45-degree angle.
[0010] Furthermore, it is particularly preferred that the four L-shaped blocks form a rectangular frame.
[0011] Furthermore, it is particularly preferred that the roller has a thin buffer layer on its side. Beneficial effects
[0012] The correction component can semi-automatically correct the positional deviation of the motherboard, ensuring that each motherboard can be accurately positioned in the same area of the surface mount, thereby reducing placement errors caused by positional deviation. The adjustable first and second moving frames allow the correction component to adapt to motherboards of different sizes, improving the versatility and flexibility of the equipment. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0014] Figure 2 This is a partial sectional view of the workbench component of this utility model.
[0015] Figure 3 This is a partial cross-sectional view of the first movable frame component of this utility model.
[0016] Figure 4 This is a partial sectional view of the second movable frame component of this utility model.
[0017] The above-mentioned figures include the following reference numerals: 1. Support, 2. Workbench, 3. Patch holder, 4. Vertical plate, 5. First electric slide rail, 51. First electric slider, 6. Second electric slide rail, 61. Second electric slider, 7. Automatic patch assembly, 8. Servo motor, 9. First bidirectional lead screw, 10. Transmission belt assembly, 11. First moving frame, 12. Knob, 13. Second bidirectional lead screw, 14. Second moving frame, 15. L-shaped block, 16. Roller, 17. Rotary shaft, 18. Torsion spring, 19. Integrated controller. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.
[0019] Example: A pick-and-place machine that automatically corrects motherboard component misalignment, such as... Figures 1-4 As shown, the assembly includes a bracket 1, a worktable 2, a patch holder 3, vertical plates 4, a first electric slide rail 5, a first electric slider 51, a second electric slide rail 6, a second electric slider 61, an automatic patch assembly 7, and an integrated controller 19. The two brackets 1 are symmetrically distributed and welded to the left and right sides of the worktable 2, forming a 45-degree angle with the worktable 2. This ensures good balance in both vertical and horizontal directions and provides stable support for the worktable 2. The patch holder 3 is bolted to the top right of the worktable 2. The two vertical plates 4 are symmetrically distributed and welded to the top left and right sides of the worktable 2. The first electric slide rail 5 is bolted between the upper parts of the two vertical plates 4. The first electric slider 51 is connected to... On the first electric slide rail 5, the second electric slide rail 6 is bolted to the lower part of the first electric slider 51, the second electric slider 61 is connected to the second electric slide rail 6, and the automatic placement assembly 7 is bolted to the lower part of the second electric slider 61. The automatic placement assembly 7 is existing technology and includes key components such as a cylinder, a nozzle, a vision alignment system, and a placement head to perform the actual placement operation. The integrated controller 19 is bolted to the lower part of the left vertical plate 4 on the side away from the placement base 3, and is electrically connected to the first electric slide rail 5, the first electric slider 51, the second electric slide rail 6, the second electric slider 61, and the automatic placement assembly 7 to achieve overall control. It also includes a correction component for correcting the position of the main board, which is set on the placement base 3.
[0020] like Figures 1-4 As shown, the correction assembly includes a servo motor 8, a first bidirectional lead screw 9, a transmission belt assembly 10, a first moving frame 11, a knob 12, a second bidirectional lead screw 13, a second moving frame 14, an L-shaped block 15, a roller 16, a rotating shaft 17, and a torsion spring 18. The servo motor 8 is bolted to the front center-left position of the worktable 2, with its output shaft facing rearward and electrically connected to the integrated controller 19. The two first bidirectional lead screws 9 are distributed left and right and rotatably connected inside the worktable 2. The front end of the left first bidirectional lead screw 9 is fixedly connected to the output shaft of the servo motor 8 via a coupling. The transmission belt assembly 10 is located between the rear ends of the two first bidirectional lead screws 9 to ensure synchronous rotation of the two first bidirectional lead screws 9. The two first moving frames 11 are symmetrical front and rear, threadedly connected between the two first bidirectional lead screws 9 and slidably connected to the worktable 2. Each second bidirectional lead screw 13 is rotatably connected inside each first moving frame 11. Each knob 12 is connected by welding. The knob 12 is hexagonal in shape and has a recess on each side to fit the fingertip. Two second movable frames 14 are symmetrically distributed and threaded to the outside of each second double-acting screw 13 and slidably connected to the corresponding first movable frame 11. Each shaft 17 is rotatably connected to each second movable frame 14. Each L-shaped block 15 is welded to the bottom of each shaft 17, and the four L-shaped blocks 15 form a rectangular frame that can accurately contact the four corners of the motherboard, ensuring that the motherboard is accurately aligned during the placement process and correcting any positional deviations. Two rollers 16 are distributed at a 90-degree angle and rotatably connected to the two ends of each L-shaped block 15. Each roller 16 has a thin buffer layer, such as a rubber ring, on its side to prevent scratches when contacting the motherboard. Each torsion spring 18 is welded between the corresponding second movable frame 14 and the corresponding L-shaped block 15 and is fitted onto the outside of the corresponding shaft 17.
[0021] First, the operator places the component box containing the electronic components on the top left side of the workbench 2. Then, the surface mount programming is written into the integrated controller 19. Next, the motherboard to be mounted is placed on the mounting base 3. The operator then sequentially pinches the knob 12 and rotates the second bidirectional lead screw 13 clockwise, driving the second moving frame 14 inward until the roller 16 closest to the motherboard contacts the side of the motherboard, thus accommodating motherboards of different lengths. Next, the servo motor 8 is activated via the integrated controller 19, and its output shaft drives the first bidirectional lead screw 9 to rotate clockwise, driving the first moving frame 11 to move the second moving frame 14 inward. During this movement, the roller 16, which has already contacted the side of the motherboard, is pressed by the motherboard and gradually approaches a horizontal position. Simultaneously, the L-shaped block 15 rotates, causing the other roller 16 to gradually approach a vertical position. In this way, the two rollers 16 respectively contact the two sides of the motherboard's corner. The motherboard is aligned to the correct position. The torsion spring 18 deforms as the L-shaped block 15 rotates, storing energy for subsequent reset. After alignment, the servo motor 8 is turned off, and then the first electric slide rail 5 and the second electric slide rail 6 are started, causing the first electric slider 51, the second electric slider 61, and the automatic placement assembly 7 to run according to the program, placing the electronic components on the material box onto the motherboard one by one. After placement, the first electric slider 51, the second electric slider 61, and the automatic placement assembly 7 return to their original positions. Finally, the servo motor 8 is restarted, controlling its output shaft to drive the first bidirectional lead screw 9 to rotate counterclockwise, driving the first moving frame 11 to move the second moving frame 14 outward, causing the L-shaped block 15 to move away from and release the motherboard. The torsion spring 18 then returns to its original shape, causing the L-shaped block 15 to reverse and drive the two rollers 16 to reset. The servo motor 8 is then turned off, and the motherboard with the placement completed can be removed.
[0022] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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. A pick-and-place machine for automatically correcting the misalignment of motherboard components, comprising a bracket (1), a worktable (2), a pick-and-place unit (3), vertical plates (4), a first electric slide rail (5), a first electric slider (51), a second electric slide rail (6), a second electric slider (61), an automatic pick-and-place assembly (7), and an integrated controller (19). The two brackets (1) are symmetrically distributed and fixed to the left and right sides of the worktable (2). The pick-and-place unit (3) is installed at the top right of the worktable (2). The two vertical plates (4) are symmetrically distributed and fixed to the top left and right sides of the worktable (2). The first electric slide rail (5) is installed on the two vertical plates. Between the upper parts of the plate (4), the first electric slider (51) is connected to the first electric slide rail (5), the second electric slide rail (6) is installed on the lower part of the first electric slider (51), the second electric slider (61) is connected to the second electric slide rail (6), the automatic patch assembly (7) is installed on the lower part of the second electric slider (61), and the integrated controller (19) is installed on the lower part of the left vertical plate (4) away from the patch holder (3), and is electrically connected to the first electric slide rail (5), the first electric slider (51), the second electric slide rail (6), the second electric slider (61) and the automatic patch assembly (7), characterized in that, It also includes a correction component for correcting the position of the motherboard, which is mounted on the surface mount (3).
2. The pick-and-place machine for automatically correcting motherboard component misalignment according to claim 1, characterized in that, The correction assembly includes a servo motor (8), a first bidirectional lead screw (9), a transmission belt assembly (10), a first moving frame (11), a second bidirectional lead screw (13), a second moving frame (14), an L-shaped block (15), a roller (16), a rotating shaft (17), and a torsion spring (18). The servo motor (8) is installed at the front center-left position of the worktable (2), with its output shaft facing rearward and electrically connected to the integrated controller (19). The two first bidirectional lead screws (9) are distributed left and right and rotatably connected inside the worktable (2). The front end of the left first bidirectional lead screw (9) is fixedly connected to the output shaft of the servo motor (8) through a coupling. The transmission belt assembly (10) is located between the rear ends of the two first bidirectional lead screws (9). The two first moving frames (11) are symmetrical front and back. The threaded connection is between the two first bidirectional lead screws (9) and slidably connected to the worktable (2). Each second bidirectional lead screw (13) is rotatably connected to the inside of each first moving frame (11). Each pair of second moving frames (14) are symmetrically distributed, threadedly connected to the outside of each second bidirectional lead screw (13) and slidably connected to the corresponding first moving frame (11). Each rotating shaft (17) is rotatably connected to each second moving frame (14). Each L-shaped block (15) is fixed to the bottom end of each rotating shaft (17). Each pair of rollers (16) are distributed at a 90-degree angle and rotatably connected to both ends of each L-shaped block (15). Each torsion spring (18) is fixed between the corresponding second moving frame (14) and the corresponding L-shaped block (15) and sleeved on the outside of the corresponding rotating shaft (17).
3. A pick-and-place machine for automatically correcting motherboard component misalignment according to claim 2, characterized in that, It also includes knobs (12), each knob (12) being fixed to the left end of each second bidirectional lead screw (13), and the knobs (12) having a hexagonal structure with a recess on each side.
4. A pick-and-place machine for automatically correcting motherboard component misalignment according to claim 3, characterized in that, The support (1) and the workbench (2) form a 45-degree angle.
5. A pick-and-place machine for automatically correcting motherboard component misalignment according to claim 4, characterized in that, Four L-shaped blocks (15) form a rectangular frame.
6. A pick-and-place machine for automatically correcting motherboard component misalignment according to claim 5, characterized in that, A thin buffer layer is provided on the side of the roller (16).