Printed circuit board defect detection device based on machine vision

Abstract

The utility model provides a printed circuit board defect detection device based on machine vision, and relates to the field of circuit board detection, the bottom end of a motor A is provided with an output shaft, the output shaft is provided with a gear, the motor A and the gear jointly form a driving structure, and the top end of a base is provided with an annular groove; the problems that in the prior art, due to the fact that only fixed-angle display can be achieved and is limited by the influence of external environment light, defect detection differences are likely to occur, and uncertainty exists are solved, by arranging a support, a motor A and a gear, when a printed circuit board is subjected to steering adjustment, the printed circuit board can be conveniently adjusted, and the defect detection accuracy is improved. The motor A installed on the top end face of the support can be started to drive the gear to rotate, and the printed circuit board is driven to rotate and adjust through meshing transmission of the gear and the guide teeth fixedly connected to the peripheral face of the guide base, so that the printed circuit board can be more accurate during detection.

Description

Technical Field

[0001] The utility model belongs to the field of circuit board detection, and particularly relates to a printed circuit board defect detection device based on machine vision. Background Art

[0002] Printed circuit boards, also known as printed circuit boards, are important electronic components, support bodies for electronic components, and providers of electrical connections for electronic components. After the production of existing printed circuit boards is completed, in order to ensure the accuracy of their circuit connectivity, corresponding defect detection devices are required for the current printed circuit board inspection operations. When the existing inspection devices are used, they are mostly shot and inspected from top to bottom. However, when conducting inspections, they can only be displayed at a fixed angle and are limited by the influence of external ambient light. This can easily lead to differences in defect detection and uncertainty.

[0003] Therefore, in view of the shortcomings of the above-mentioned scheme in actual production and implementation, it is revised and improved. At the same time, in the spirit and concept of seeking excellence, with the assistance of professional knowledge and experience, and after many ingenuity and experiments, the present utility model is created. A printed circuit board defect detection device based on machine vision is provided to solve the problem that the existing defect detection is easily different and there is uncertainty because it can only achieve fixed angle display and is limited by the influence of external ambient light. Utility Model Content

[0004] The utility model proposes a printed circuit board defect detection device based on machine vision, which solves the problem in the prior art that only fixed-angle display can be achieved and the defect detection is easily different and uncertain due to the influence of external ambient light.

[0005] The technical solution of the utility model is implemented as follows: a printed circuit board defect detection device based on machine vision, comprising a base, a bracket fixedly connected to the top surface of the base, and the main body of the bracket is an L-shaped structure, and a motor A is installed on the top surface of the cross member in the bracket, and an output shaft is installed at the bottom end of the motor A, and a gear is installed on the output shaft, and the motor A and the gear together form a driving structure, and an annular groove is opened at the top of the base:

[0006] As a preferred embodiment, a through hole is opened inside the base, and the through hole is a mounting hole. There are four mounting holes in total, and the four mounting holes are respectively opened at the four corners inside the base. The base and the mounting holes together constitute a connecting structure.

[0007] As a preferred embodiment, a guide seat is installed inside the annular groove opened at the top of the base, the main body of the guide seat is a cylindrical structure, and a guide ring is fixedly connected to the outer circumference of the guide seat, the main body of the guide ring is an annular structure, and the diameter of the guide ring is larger than the diameter of the guide seat.

[0008] As a preferred embodiment, the guide seat is rotatably connected to the base through a guide ring fixedly connected to its outer surface, and a guide tooth is fixedly connected to the outer peripheral surface of the guide seat in an annular array, and the guide tooth is meshed with a gear arranged on the output shaft at the bottom end of motor A for transmission.

[0009] As a preferred embodiment, a motor B is mounted on the outer circumferential surface of the guide seat, and an output shaft is provided on the right side of the motor B. A connecting block is mounted on the output shaft, and the connecting block is rotatably connected to a notch provided at the top end of the guide seat.

[0010] As a preferred embodiment, a suction cup is fixedly connected to the top surface of the connecting block, and a through hole is opened in a rectangular array on the top surface of the suction cup, the through hole is used for pumping air, and a pump is fixedly connected to the bottom surface of the suction cup, and a support frame is fixedly connected to the top surface of the bracket, the main body of the support frame is longitudinally arranged, and a connecting plate is fixedly connected to the front end surface of the support frame, and a CCD lens is fixedly connected to the bottom surface of the connecting plate.

[0011] After using the above technical solution, the beneficial effects of the utility model are:

[0012] 1. In the utility model, by providing a bracket, a motor A and a gear, when the printed circuit board is turned and adjusted, the motor A installed on the top surface of the bracket can be started to drive the gear to rotate, and the gear and the guide teeth fixedly connected to the outer peripheral surface of the guide seat are meshed to drive the printed circuit board to rotate and adjust, so that it can be more accurate when detecting.

[0013] 2. In the utility model, by providing a motor B, the connecting block and the suction cup can be rotated and adjusted by the motor B when it is in use, so that the printed circuit board adsorbed on the suction cup can be steered and adjusted according to actual needs, so that when it is in use, the overall practicality of the device can be significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a schematic diagram of the front and side view of the defect detection device of the utility model after partial structure dissection;

[0016] Figure 2 It is a right side structural schematic diagram of the defect detection device of the utility model;

[0017] Figure 3 This is a schematic diagram of the combined structure of the bracket and the motor A of the defect detection device of the utility model;

[0018] Figure 4 It is a schematic diagram of the combined structure of the connecting block and the suction cup of the defect detection device of the utility model;

[0019] Figure 5 It is a left-side structural schematic diagram of the defect detection device of the utility model;

[0020] Figure 6 It is a schematic diagram of the top view of the defect detection device of the utility model;

[0021] In the figure, 1. base; 101. mounting hole; 102. bracket; 103. motor A; 104. gear; 2. guide seat; 201. guide ring; 202. guide tooth; 203. motor B; 204. connecting block; 205. suction cup; 206. pump; 3. support frame; 301. connecting plate; 302. CCD lens. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1-Figure 6As shown, a printed circuit board defect detection device based on machine vision includes: a base 1, a bracket 102 is fixedly connected to the top surface of the base 1, and the main body of the bracket 102 is an L-shaped structure, and a motor A103 is installed on the top surface of the transverse member in the bracket 102, and an output shaft is installed at the bottom end of the motor A103, and a gear 104 is installed on the output shaft, and the motor A103 and the gear 104 together constitute a driving structure, and an annular groove is provided at the top of the base 1, a suction cup 205 is fixedly connected to the top surface of the connecting block 204, and a through hole is provided in a rectangular array on the top surface of the suction cup 205, and the through hole is used for air extraction, and a pump 206 is fixedly connected to the bottom surface of the suction cup 205, and a support frame 3 is fixedly connected to the top surface of the bracket 102, the main body of the support frame 3 is longitudinally arranged, and a connecting plate 301 is fixedly connected to the front end surface of the support frame 3, and a CCD lens 302 is fixedly connected to the bottom end surface of the connecting plate 301.

[0024] Among them, a through hole is opened inside the base 1, which is the mounting hole 101, and the mounting hole 101 is provided at four locations, and the four mounting holes 101 are respectively opened at the four corners inside the base 1, and the base 1 and the mounting holes 101 together constitute a connecting structure, and a guide seat 2 is installed inside the annular groove opened at the top of the base 1, and the main body of the guide seat 2 is a cylindrical structure, and a guide ring 201 is fixedly connected to the outer peripheral surface of the guide seat 2, and the main body of the guide ring 201 is an annular structure, and the diameter of the guide ring 201 is larger than the diameter of the guide seat 2.

[0025] Among them, the guide seat 2 is rotatably connected to the base 1 through the guide ring 201 fixedly connected on its outer surface, and the guide teeth 202 are fixedly connected in a ring array on the outer peripheral surface of the guide seat 2, and the guide teeth 202 are meshed with the gear 104 arranged on the output shaft at the bottom end of the motor A103 for transmission. The motor B203 is installed on the outer peripheral surface of the guide seat 2, and the output shaft is arranged on the right side of the motor B203. The output shaft is installed with a connecting block 204, and the connecting block 204 is rotatably connected in the notch opened at the top of the guide seat 2.

[0026] When in use, when the printed circuit board needs to be inspected for surface defects, the printed circuit board can be placed on the suction cup 205 fixedly connected to the top surface of the connecting block 204, and the pump 206 installed on the bottom surface of the suction cup 205 is synchronously started to pump air, so that the circuit board placed on the suction cup 205 can be adsorbed and positioned, and the CCD lens 302 installed on the bottom surface of the connecting plate 301 is synchronously started to identify and judge the printing condition of the printed circuit board currently placed on the suction cup 205;

[0027] And during the identification and judgment process, if it is necessary to adjust the tilt of the current circuit board, the connecting block 204 can be driven to rotate by starting the motor B203 installed on the outside of the guide seat 2, and when the connecting block 204 rotates, it can synchronously drive the suction cup 205 fixedly connected to the top surface of the connecting block 204 to drive the circuit board to deflect and adjust, thereby achieving a more practical purpose.

[0028] In the description of the present utility model, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A printed circuit board defect detection device based on machine vision, characterized in that: The invention comprises a base (1), a bracket (102) is fixedly connected to the top surface of the base (1), the main body of the bracket (102) is an L-shaped structure, a motor A (103) is installed on the top surface of the transverse member in the bracket (102), an output shaft is installed at the bottom end of the motor A (103), a gear (104) is installed on the output shaft, and the motor A (103) and the gear (104) together form a driving structure, and an annular groove is opened at the top of the base (1); a guide seat (2) is installed inside the annular groove opened at the top of the base (1) The main body of the guide seat (2) is a cylindrical structure, and a guide ring (201) is fixedly connected to the outer peripheral surface of the guide seat (2), the main body of the guide ring (201) is an annular structure, and the diameter of the guide ring (201) is larger than the diameter of the guide seat (2); the guide seat (2) is rotatably connected to the base (1) through the guide ring (201) fixedly connected to the outer side surface thereof, and guide teeth (202) are fixedly connected to the outer peripheral surface of the guide seat (2) in an annular array, and the guide teeth (202) are meshed with the gear (104) arranged on the output shaft at the bottom end of the motor A (103) for transmission.

2. A printed circuit board defect detection device based on machine vision according to claim 1, characterized in that: The base (1) is provided with a through hole inside, the through hole being a mounting hole (101), and the mounting holes (101) are provided at four locations in total, and the four mounting holes (101) are respectively provided at four corners inside the base (1), and the base (1) and the mounting holes (101) together form a connection structure.

3. A printed circuit board defect detection device based on machine vision according to claim 2, characterized in that: A motor B (203) is mounted on the outer peripheral surface of the guide seat (2), and an output shaft is arranged on the right side of the motor B (203). A connecting block (204) is mounted on the output shaft, and the connecting block (204) is rotatably connected to a notch provided at the top end of the guide seat (2).

4. The device for detecting defects of a printed circuit board based on machine vision according to claim 3, characterized in that: A suction cup (205) is fixedly connected to the top surface of the connecting block (204), and a through hole is provided in a rectangular array on the top surface of the suction cup (205), and the through hole is used for pumping air, and a pump (206) is fixedly connected to the bottom surface of the suction cup (205), and a support frame (3) is fixedly connected to the top surface of the bracket (102), the main body of the support frame (3) is arranged longitudinally, and a connecting plate (301) is fixedly connected to the front surface of the support frame (3), and a CCD lens (302) is fixedly connected to the bottom surface of the connecting plate (301).

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