A circuit board positioning device

Abstract

The utility model relates to circuit board processing equipment technical field discloses a kind of circuit board positioning device, it includes first positioning mechanism and second positioning mechanism, first positioning mechanism uses flexible positioning rod and built-in elastic protection mechanism of first spring, realize the horizontal and vertical flexible preliminary positioning of circuit board;Second positioning mechanism is guided by detection camera, realizes flexible vertical accurate positioning by built-in positioning shaft of second spring, the utility model is positioned by coarse and fine combined three-dimensional flexible positioning mode, solve the problem that rigid contact is easily damaged in prior art circuit board, with the advantages of high positioning accuracy, high degree of automation, effectively avoid circuit board damage.

Description

Technical Field

[0001] This utility model relates to the field of circuit board processing equipment technology, and in particular to a circuit board positioning device. Background Technology

[0002] In the electronics manufacturing industry, circuit boards serve as carriers for various electronic components. Their automated processing, testing, and assembly are key steps to improve production efficiency and product quality. Before processes such as printing, surface mounting, soldering, or testing are carried out, the circuit boards delivered to the workstation must be precisely fixed in a predetermined position. This process is usually completed by a specialized positioning device.

[0003] Currently, automated production lines commonly use mechanical stops, locating pins, or pneumatic clamps to position circuit boards. These traditional positioning devices typically use rigid components to directly contact the edges or surfaces of the circuit board, restricting its degrees of freedom. However, as electronic products become increasingly dense and thinner, circuit boards themselves are becoming more precise and fragile. The inherent flaws of rigid contact positioning methods are becoming apparent. During positioning, the impact force or excessive clamping force generated between the rigid positioning components and the circuit board can easily cause indentations, scratches, or even micro-cracks on the circuit board's edges, affecting its electrical performance and reliability, leading to an increased product defect rate.

[0004] Furthermore, while some solutions have introduced visual inspection systems to achieve high-precision positioning, their subsequent mechanical adjustment mechanisms still tend to be rigidly driven and lack a buffer mechanism to gently complete the final attitude correction. This means that even with visual guidance, the final physical contact still carries the risk of damaging the circuit board. At the same time, existing positioning systems often struggle to achieve flexible and precise positioning in three dimensions—horizontal, longitudinal, and vertical—within a compact, integrated structure, resulting in complex positioning system structures or poor positioning performance.

[0005] Therefore, this utility model proposes a circuit board positioning device to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a circuit board positioning device, which aims to improve the problems of existing circuit board positioning devices, such as the positioning components being mostly in rigid contact, which easily cause impact damage to the circuit board during the positioning process, and the lack of a compact structure that can integrate to achieve three-dimensional flexible and precise positioning.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a circuit board positioning device, comprising: a bracket, a conveyor belt, a first positioning mechanism and a second positioning mechanism; a flexible positioning rod and a limiting frame disposed on the first positioning mechanism, and a detection camera and a positioning shaft disposed on the second positioning mechanism.

[0008] The limiting frame is equipped with an elastic protection mechanism with a built-in first spring, and the lower end of the positioning shaft is equipped with a limiting post with a built-in second spring.

[0009] The first positioning mechanism is located beside the conveyor belt for lateral and longitudinal positioning of the circuit board. The second positioning mechanism is located above the conveyor belt for vertical positioning of the circuit board. The flexible positioning rod and the elastic protection mechanism work together to achieve flexible initial positioning of the circuit board. The detection camera guides the limiting post with the second spring to achieve flexible and precise positioning of the circuit board.

[0010] The above technical solution achieves multi-dimensional flexible positioning of the circuit board from the horizontal, vertical and other directions, which ensures positioning accuracy and avoids damage to the circuit board.

[0011] Preferably, the first positioning mechanism further includes a fixed frame, a first motor, and a first bidirectional lead screw. The first motor drives the first bidirectional lead screw to rotate, and the flexible positioning rod is threadedly connected to the first bidirectional lead screw to achieve lateral movement.

[0012] The above technical solution achieves automated lateral movement adjustment of the flexible positioning rod, which can adapt to the lateral positioning requirements of circuit boards of different widths.

[0013] Preferably, the first positioning mechanism further includes a second motor and a second bidirectional lead screw, the second motor drives the second bidirectional lead screw to rotate, and the limiting frame is connected to the second bidirectional lead screw to achieve longitudinal movement.

[0014] The above technical solution achieves automated longitudinal movement adjustment of the limit frame, which can adapt to the longitudinal positioning requirements of circuit boards of different lengths.

[0015] Preferably, the first positioning mechanism further includes a fixed plate, a first cylinder, and a guide rod. The first cylinder is mounted on the fixed plate and is used to drive the limiting frame to move up and down along the guide rod.

[0016] The above technical solution achieves the effect of adjusting the vertical position of the limiting frame.

[0017] Preferably, the elastic protection mechanism further includes an arc-shaped plate, a sliding rod, and a limiting plate. The limiting plate is slidably connected to the arc-shaped plate via the sliding rod. The first spring is sleeved on the sliding rod, and its two ends abut against the arc-shaped plate and the limiting plate, respectively.

[0018] The above technical solution achieves the effect of elastic buffer protection for the circuit board during the positioning process, reducing the damage caused by rigid contact.

[0019] Preferably, the limiting plate has an anti-slip groove on the side surface facing the circuit board.

[0020] The above technical solution achieves the effect of increasing the friction between the limiting plate and the circuit board.

[0021] Preferably, the second positioning mechanism further includes a connecting frame and a second cylinder, both of which are mounted on the connecting frame, and the second cylinder is used to drive the positioning shaft to move.

[0022] The above technical solution achieves automated drive control of the positioning axis and enables real-time acquisition of circuit board position information through a detection camera.

[0023] Preferably, the output end of the second cylinder is connected to the positioning shaft, the limiting post is located at the end of the positioning shaft, and the second spring is housed in the limiting post and abuts against the positioning shaft.

[0024] The above technical solution achieves elastic buffering when the limiting post contacts the circuit board, thus avoiding excessive pressure during vertical positioning that could damage the circuit board.

[0025] This utility model has the following beneficial effects: 1. In this utility model, by setting a first positioning mechanism with a flexible positioning rod and a second positioning mechanism with a built-in spring, the positioning of the circuit board in the horizontal, vertical and vertical directions is achieved in concert. This solves the problem that the positioning devices in the prior art are mostly rigid contact, which can easily cause physical damage such as impact and scratches to the circuit board during the positioning process. It achieves the technical effect of multi-dimensional flexible buffer positioning of the circuit board, effectively protecting the integrity of the circuit board and improving the product yield.

[0026] 2. In this utility model, by setting a first positioning mechanism for preliminary positioning and a second positioning mechanism for precise positioning, and by using a detection camera to provide precise position information guidance for the second positioning mechanism, the problem of insufficient accuracy and difficulty in adapting to slight deviations in the position of incoming materials in the existing single mechanical positioning method is solved. This achieves the technical effect of combining coarse positioning and fine positioning, and significantly improving positioning accuracy and reliability. Attached Figure Description

[0027] Figure 1 This is a perspective view of a circuit board positioning device proposed in this utility model; Figure 2 This is a schematic diagram of a bracket for a circuit board positioning device proposed in this utility model; Figure 3 This is a schematic diagram of the bottom of the bracket of a circuit board positioning device proposed in this utility model; Figure 4 This is a schematic diagram of the first positioning mechanism of a circuit board positioning device proposed in this utility model; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the second positioning mechanism of a circuit board positioning device proposed in this utility model; Figure 7 for Figure 6 Enlarged view of point B in the middle; Explanation of reference numerals in the attached drawings: 1. Bracket; 2. Conveyor belt; 3. First positioning mechanism; 301. Fixed frame; 302. First motor; 303. First bidirectional lead screw; 304. Flexible positioning rod; 305. Fixed plate; 306. Guide rod; 307. First cylinder; 308. Limiting frame; 309. Second bidirectional lead screw; 310. Second motor; 4. Elastic protective mechanism; 401. Bow-shaped plate; 402. Slide rod; 403. Limiting plate; 404. Anti-slip groove; 405. First spring; 5. Second positioning mechanism; 501. Connecting frame; 502. Detection camera; 503. Second cylinder; 504. Positioning shaft; 505. Limiting post; 506. Second spring. Detailed Implementation

[0028] 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.

[0029] Reference Figures 1-7The present invention provides an embodiment of a circuit board positioning device, which aims to solve the problems of existing positioning devices being prone to damaging circuit boards due to rigid contact and lacking a three-dimensional flexible precision positioning integrated structure. The circuit board positioning device includes a support 1, a conveyor belt 2, a first positioning mechanism 3, and a second positioning mechanism 5 disposed on the support 1. The support 1 serves as the mounting base of the entire device, providing stable support for each component. The conveyor belt 2 is used to transport the circuit board to a predetermined working area. The first positioning mechanism 3 is disposed beside the conveyor belt 2 and is used to perform lateral and longitudinal positioning of the circuit board on the conveyor belt 2. The second positioning mechanism 5 is disposed above the conveyor belt 2 and is used to perform vertical positioning of the circuit board. Specifically, the first positioning mechanism 3 includes a fixed frame 301, a first motor 302, a first bidirectional lead screw 303, a second motor 310, a second bidirectional lead screw 309, a fixed plate 305, and a first cylinder 307 mounted on the fixed plate 305. The first positioning mechanism 3 also includes a flexible positioning rod 304 threadedly connected to the first bidirectional lead screw 303, and a limiting frame 308 driven by the second bidirectional lead screw 309. The limiting frame 308 is also provided with a guide rod 306. The first motor 302 drives the first bidirectional lead screw 303 to rotate, thereby causing the flexible positioning rod 304 to move laterally. The second motor 310 drives the second bidirectional lead screw 309 to rotate, thereby causing the limiting frame 308 to move longitudinally. The first cylinder 307 drives the limiting frame 308 to move up and down along the guide rod 306. To achieve flexible contact during the positioning process, the limiting frame 308 is equipped with an elastic protection mechanism 4. The elastic protection mechanism 4 includes an arc-shaped plate 401, a sliding rod 402, a limiting plate 403, and a first spring 405. The arc-shaped plate 401 is fixed on the limiting frame 308, and the limiting plate 403 is slidably connected to the arc-shaped plate 401 through the sliding rod 402. The first spring 405 is sleeved on the sliding rod 402, and its two ends abut against the arc-shaped plate 401 and the limiting plate 403 respectively, thereby providing elastic buffer when the limiting plate 403 contacts the circuit board. The side surface of the limiting plate 403 facing the circuit board is also provided with an anti-slip groove 404 to increase the contact friction. The specific internal structure and control method of the first motor 302, the second motor 310, and the first cylinder 307 can be implemented by those skilled in the art using conventional technical means, which are well known in the art and will not be described in detail here.

[0030] The second positioning mechanism 5 includes a connecting frame 501, a detection camera 502 and a second cylinder 503 mounted on the connecting frame 501. The output end of the second cylinder 503 is connected to the positioning shaft 504. At the end of the positioning shaft 504, there is a limiting post 505 with a built-in second spring 506, wherein the second spring 506 is housed in the limiting post 505 and abuts against the positioning shaft 504.

[0031] Working principle: After the circuit board to be positioned is conveyed to the working area of ​​the first positioning mechanism 3 and the second positioning mechanism 5 via the conveyor belt 2, the first motor 302 in the first positioning mechanism 3 drives the first bidirectional lead screw 303 to rotate, thereby driving the flexible positioning rod 304 to move, performing flexible lateral preliminary positioning on the circuit board from both sides. At the same time, the second motor 310 drives the second bidirectional lead screw 309 to rotate, driving the limiting frame 308 to perform longitudinal preliminary positioning on the circuit board. During the process of the limiting frame 308 contacting the circuit board, the elastic protection mechanism 4 set on it plays a role. If the impact force is too large when the limiting plate 403 contacts the circuit board, the first spring 405 will activate. The circuit board is compressed to provide elastic cushioning and avoid hard impact. Subsequently, the detection camera 502 in the second positioning mechanism 5 performs position detection on the circuit board after preliminary positioning and controls the second cylinder 503 to move according to the detection result. The second cylinder 503 drives the positioning shaft 504 to move the limiting post 505 downward and contact the upper surface of the circuit board. When contacting, the second spring 506 in the limiting post 505 is compressed, realizing gentle vertical positioning and pressing of the circuit board. Through this synergistic effect of the first positioning mechanism 3 and the second positioning mechanism 5, stable and damage-free precise positioning of the circuit board in the horizontal, vertical and vertical dimensions is achieved.

Claims

1. A circuit board positioning device, comprising: Support (1); The conveyor belt (2) is mounted on the support (1); The first positioning mechanism (3) is located beside the conveyor belt (2) and is used to position the circuit board on the conveyor belt (2) in the horizontal and vertical directions. The second positioning mechanism (5) is disposed above the conveyor belt (2) and is used to position the circuit board vertically. Its characteristic is that: The first positioning mechanism (3) includes a flexible positioning rod (304) for lateral positioning and a limiting frame (308) for longitudinal positioning. The limiting frame (308) is provided with an elastic protection mechanism (4), and the elastic protection mechanism (4) has a built-in first spring (405) for providing elastic buffering. The second positioning mechanism (5) includes a detection camera (502) for detecting the position of the circuit board, and a positioning shaft (504) for vertical positioning above the circuit board. The lower end of the positioning shaft (504) is provided with a limiting post (505) with a built-in second spring (506).

2. The circuit board positioning device according to claim 1, characterized in that, The first positioning mechanism (3) further includes a fixed frame (301), a first motor (302) that drives the flexible positioning rod (304) to move laterally, and a first bidirectional lead screw (303), wherein the flexible positioning rod (304) is threadedly connected to the first bidirectional lead screw (303).

3. The circuit board positioning device according to claim 1, characterized in that, The first positioning mechanism (3) further includes a second motor (310) and a second bidirectional lead screw (309) for driving the limiting frame (308) to move longitudinally, and the limiting frame (308) is connected to the second bidirectional lead screw (309) in a transmission connection.

4. The circuit board positioning device according to claim 3, characterized in that, The first positioning mechanism (3) further includes a fixed plate (305), a first cylinder (307) mounted on the fixed plate (305), and a guide rod (306). The first cylinder (307) is used to drive the limiting frame (308) to move up and down along the guide rod (306).

5. The circuit board positioning device according to claim 1, characterized in that, The elastic protective mechanism (4) further includes an arc-shaped plate (401) and a limiting plate (403). The limiting plate (403) is used to contact the circuit board. The limiting plate (403) is slidably connected to the arc-shaped plate (401) through a slide rod (402). The first spring (405) is sleeved on the slide rod (402) and its two ends abut against the arc-shaped plate (401) and the limiting plate (403) respectively.

6. The circuit board positioning device according to claim 5, characterized in that, The limiting plate (403) has an anti-slip groove (404) on the side surface facing the circuit board.

7. The circuit board positioning device according to claim 1, characterized in that, The second positioning mechanism (5) further includes a connecting frame (501) and a second cylinder (503). The detection camera (502) and the second cylinder (503) are both mounted on the connecting frame (501). The second cylinder (503) is used to drive the positioning shaft (504) to move.

8. The circuit board positioning device according to claim 7, characterized in that, The output end of the second cylinder (503) is connected to the positioning shaft (504), the limiting post (505) is located at the end of the positioning shaft (504), and the second spring (506) is housed in the limiting post (505) and abuts against the positioning shaft (504).

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