Visual inspection machine for PCB (Printed Circuit Board)

Abstract

The utility model discloses a printed circuit board (PCB) visual inspection machine, and particularly relates to the technical field of PCB visual inspection, the PCB visual inspection machine comprises a cabinet, a belt conveyor is arranged in the cabinet, and a plurality of groups of clamping assemblies for fixing PCBs are arranged at the top of the belt conveyor; two adjusting assemblies used for rotating the clamping assemblies are arranged in the machine cabinet. Each adjusting assembly comprises an inner ring and an outer ring which are arranged in the cabinet, the inner ring is arranged in the outer ring, and a sliding way is arranged between the inner ring and the outer ring. According to the utility model, through the cooperation of the positioning member and the slideway, the stability when the electric push rod drives the PCB to move can be ensured, and then through the clamping of the clamping member and the positioning member, the positioning member can rotate along with the clamping member, so that the electric push rod can be driven to drive the PCB to rotate, and the camera can carry out double-sided detection on the PCB; therefore, the detection efficiency and the detection accuracy of the device can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB board visual inspection, and more specifically to a PCB board visual inspection machine. Background Art

[0002] PCBs support electronic components and act as electrical connections. They connect various electronic components through wires, ensuring the proper functioning of electronic devices. PCBs play a vital role in modern electronic devices and are widely used in computers, communications equipment, consumer electronics, and other fields.

[0003] PCB visual inspection machines utilize high-precision industrial cameras and advanced image processing software to rapidly identify and report various defects on PCBs. As shown in prior art publication No. CN219871079U, while this technology enables orderly, automated product inspection, effectively replacing manual labor while significantly improving inspection accuracy and effectively avoiding problems such as missed inspections and mixed inspections during the inspection process, it can only inspect one side of a PCB at a time, requiring the PCB to be inspected twice. This increases inspection time and, in turn, affects inspection efficiency. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a PCB board visual inspection machine. Through the cooperation of the positioning member and the slide, the stability of the electric push rod when driving the PCB board to move can be guaranteed, and then through the engagement of the clamping member and the positioning member, the positioning member can rotate together with the clamping member, thereby driving the electric push rod to drive the PCB board to rotate, so that the camera can perform double-sided inspection of the PCB board, thereby effectively improving the inspection efficiency and inspection accuracy of the present invention to solve the problems arising from the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a PCB board visual inspection machine, comprising a cabinet, a belt conveyor installed inside the cabinet, and a plurality of clamping assemblies for fixing PCB boards provided on the top of the belt conveyor;

[0006] Two sets of adjustment components for rotating the clamping components are provided inside the cabinet;

[0007] Each set of adjustment components includes an inner ring and an outer ring arranged in the cabinet, the inner ring is arranged inside the outer ring, and a slide is provided between the inner ring and the outer ring;

[0008] The inner ring and the outer ring are provided with a common support member on the side away from the belt conveyor, and the support member is installed on the top of the belt conveyor. A motor is installed on the side of the support member close to the belt conveyor, and a clamp with a U-shaped cross-section is installed on the output shaft of the motor. Openings are provided on the side of the inner ring and the outer ring close to the clamp, and the two ends of the clamp away from the support member extend into the two openings respectively.

[0009] In a preferred embodiment, each set of clamping assemblies includes two electric push rods arranged on the top of the belt conveyor, and the outer sleeve of the electric push rods is provided with a support seat for connecting to the belt conveyor, and the inner wall of the support seat is movably connected to the outer side of the electric push rods through a bearing; the ends of the two electric push rods that are close to each other are installed with fixing parts with a U-shaped cross-section, and the sides of the two electric push rods that are away from each other are installed with positioning parts. The electric push rods drive the fixing parts to clamp and fix the PCB board, thereby ensuring the stability of the PCB board, and with the help of the movable connection of the support seat, the electric push rods can be rotated, which facilitates the subsequent rotation of the PCB board and achieves the effect of double-sided detection.

[0010] In a preferred embodiment, a reflector is installed on the side of the electric push rod close to the support and away from the belt conveyor. Through the cooperation of the reflector and the infrared sensor, the displacement position of the PCB board can be determined, thereby ensuring accurate detection of the camera.

[0011] In a preferred embodiment, a mounting piece is provided on the top of the belt conveyor, and the front and rear ends of the mounting piece are fixed to the inner wall of the cabinet, a hydraulic cylinder is installed at the bottom of the mounting piece, and a camera is installed at the bottom of the hydraulic cylinder; infrared sensors are installed at the bottom of the front and rear ends of the mounting piece, and the position of the infrared sensor corresponds to that of one of the reflective pieces. The hydraulic cylinder drives the camera to move downward to detect the PCB board, and then the displacement position of the electric push rod can be detected by the contact between the infrared sensor and the reflective piece, thereby ensuring the detection accuracy of the camera.

[0012] In a preferred embodiment, the inner ring and the outer ring are both installed with connectors for connecting to the inner wall of the cabinet on the side away from the belt conveyor, and the inner ring and the outer ring are limited by the connectors to ensure their stability.

[0013] In a preferred embodiment, the cross-section of the positioning member and the cross-section of the clamping member are both set to be rectangular. By setting the cross-section of the positioning member and the cross-section of the clamping member to be rectangular, the clamping member can limit the positioning member and make the positioning member rotate together with the clamping member, thereby driving the electric push rod to rotate.

[0014] In a preferred embodiment, a feed port is provided on the front side of the cabinet, a discharge port is provided at one end of the cabinet, the belt conveyor is arranged inside the discharge port, and a controller is installed on the front side of the cabinet. The PCB board is conveyed through the feed port and then discharged through the discharge port. At the same time, the equipment in the cabinet is operated and adjusted by the controller.

[0015] Technical effects and advantages of this utility model:

[0016] 1. The coordination between the positioning member and the slideway ensures the stability of the electric push rod when driving the PCB board to move. Then, by engaging the clamping member with the positioning member, the positioning member can rotate with the clamping member, thereby driving the electric push rod to drive the PCB board to rotate, so that the camera can perform double-sided inspection of the PCB board, thereby effectively improving the inspection efficiency and accuracy of the utility model.

[0017] 2. By matching the reflector with the infrared sensor, the displacement direction of the PCB board can be determined, thereby ensuring the accuracy of the camera's detection of the PCB board and preventing offset and misalignment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is the front view of the belt conveyor of the present utility model;

[0020] Figure 3 This is a bottom view of the mounting member of the present utility model;

[0021] Figure 4 This is the front view of the inner ring of the utility model;

[0022] Figure 5 For the utility model Figure 5 Enlarged view of part A;

[0023] Figure 6 This is an exploded view of the support member of the present invention.

[0024] The accompanying drawings are marked as follows: 1. Cabinet; 2. Belt conveyor; 3. Inner ring; 4. Outer ring; 5. Slide; 6. Support member; 7. Motor; 8. Clamp; 9. Opening; 10. Electric push rod; 11. Support seat; 12. Fixing member; 13. Positioning member; 14. Reflecting member; 15. Mounting member; 16. Hydraulic cylinder; 17. Camera; 18. Infrared sensor; 19. Connecting member; 20. Feed port; 21. Discharge port; 22. Controller. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Refer to the instruction manual Figure 1-6 The utility model provides a PCB board visual inspection machine, comprising a cabinet 1, a belt conveyor 2 is installed inside the cabinet 1, and a plurality of clamping components for fixing the PCB board are provided on the top of the belt conveyor 2;

[0027] like Figure 1 and 2 As shown, each set of clamping assemblies includes two electric push rods 10 arranged on the top of the belt conveyor 2, and the outer part of the electric push rods 10 is provided with a support seat 11 for connecting to the belt conveyor 2, and the inner wall of the support seat 11 is movably connected to the outer part of the electric push rods 10 through a bearing; the ends of the two electric push rods 10 that are close to each other are installed with a fixing part 12 with a U-shaped cross-section, and the sides of the two electric push rods 10 that are away from each other are installed with a positioning part 13, and the electric push rods 10 drive the fixing part 12 to clamp and fix the PCB board, thereby ensuring the stability of the PCB board, and with the help of the movable connection of the support seat 11, the electric push rods 10 can be rotated, which can facilitate the subsequent rotation of the PCB board and achieve the effect of double-sided detection.

[0028] like Figure 2 、 4 As shown in FIG6 , a reflector 14 is installed on the side of the electric push rod 10 close to the support 6 and away from the belt conveyor 2. Through the cooperation of the reflector 14 and the infrared sensor 18, the displacement position of the PCB board can be determined, thereby ensuring accurate detection by the camera 17.

[0029] like Figure 2 and 3 As shown, a mounting member 15 is provided on the top of the belt conveyor 2, and the front and rear ends of the mounting member 15 are fixed to the inner wall of the cabinet 1, and a hydraulic cylinder 16 is installed at the bottom of the mounting member 15, and a camera 17 is installed at the bottom of the hydraulic cylinder 16; infrared sensors 18 are installed at the bottom of the front and rear ends of the mounting member 15, and the position of the infrared sensor 18 corresponds to the position of one of the reflectors 14. The hydraulic cylinder 16 drives the camera 17 to move downward to detect the PCB board, and then the contact between the infrared sensor 18 and the reflector 14 can detect the displacement position of the electric push rod 10, thereby ensuring the detection accuracy of the camera 17.

[0030] In order to facilitate the flipping and adjustment of the PCB board, two sets of adjustment components for rotating the clamping components are provided inside the cabinet 1;

[0031] like Figure 2 、 4 As shown in , 5 and 6, each group of adjustment components includes an inner ring 3 and an outer ring 4 arranged in the cabinet 1, the inner ring 3 is arranged inside the outer ring 4, and a slide 5 is provided between the inner ring 3 and the outer ring 4; the inner ring 3 and the outer ring 4 are provided with a same support member 6 on the side away from the belt conveyor 2, and the support member 6 is installed on the top of the belt conveyor 2, and a motor 7 is installed on the side of the support member 6 close to the belt conveyor 2, and the output shaft of the motor 7 is installed with a clamping member 8 with a U-shaped cross-section, and the inner ring 3 and the outer ring 4 are provided with an opening 9 on the side close to the clamping member 8, and the two ends of the clamping member 8 away from the support member 6 extend to the inside of the two openings 9 respectively, and the positioning member 13 is limited by the inner ring 3 and the outer ring 4, so as to prevent the electric push rod 10 from rotating. At the same time, the setting of the opening 9 can make the clamping member 8 drive the positioning member 13 to rotate.

[0032] like Figure 3 and 4 As shown, the inner ring 3 and the outer ring 4 are both installed with connectors 19 for connecting to the inner wall of the cabinet 1 on the side away from the belt conveyor 2. The inner ring 3 and the outer ring 4 are limited by the connector 19 to ensure their stability.

[0033] like Figure 5 and 6 As shown, the cross-section of the positioning member 13 and the cross-section of the clamping member 8 are both set to be rectangular. By setting the cross-section of the positioning member 13 and the cross-section of the clamping member 8 to be rectangular, the clamping member 8 can limit the positioning member 13 and make the positioning member 13 rotate together with the clamping member 8, thereby driving the electric push rod 10 to rotate.

[0034] like Figure 1 As shown, a feed port 20 is provided on the front side of the cabinet 1, a discharge port 21 is provided at one end of the cabinet 1, the belt conveyor 2 is arranged inside the discharge port 21, and a controller 22 is installed on the front side of the cabinet 1. The PCB board is conveyed through the feed port 20 and then discharged through the discharge port 21. At the same time, the equipment in the cabinet 1 is operated and adjusted by the controller 22.

[0035] First, the PCB is placed on the belt conveyor 2 through the feed port 20. At the same time, the two electric push rods 10 drive the fixing parts 12 to extend, thereby clamping and fixing the PCB.

[0036] Afterwards, the electric push rod 10 drives the PCB board to move toward the camera 17 along with the operation of the belt conveyor 2, and the electric push rod 10 uses the slide 5 to stabilize the position of the positioning member 13 to prevent the electric push rod 10 from rotating.

[0037] When the reflector 14 on the electric push rod 10 corresponds to the infrared sensor 18, the hydraulic cylinder 16 drives the camera 17 to move downward to take a photo of the front of the PCB board, and the positioning member 13 on the electric push rod 10 is also moved into the inside of the clamping member 8. The motor 7 drives the clamping member 8 to rotate, and the clamping member 8 drives the positioning member 13 to rotate, thereby driving the electric push rod 10 connected to the positioning member 13 and turning the PCB board to the back for camera 17 to take a photo and detect;

[0038] After the detection is completed, the positioning member 13 limits the electric push rod 10 moving with the belt conveyor 2 through the slide 5, thereby ensuring the operating stability of the electric push rod 10 and enabling double-sided detection, so that the utility model can detect the PCB board more comprehensively and effectively, thereby improving the detection efficiency.

[0039] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A PCB visual inspection machine, comprising a cabinet (1), characterized in that: A belt conveyor (2) is installed inside the cabinet (1), and a plurality of clamping assemblies for fixing PCB boards are provided on the top of the belt conveyor (2); Two sets of adjustment components for rotating the clamping components are provided inside the cabinet (1); Each set of adjustment components comprises an inner ring (3) and an outer ring (4) arranged in the cabinet (1), wherein the inner ring (3) is arranged inside the outer ring (4), and a slideway (5) is provided between the inner ring (3) and the outer ring (4); The inner ring (3) and the outer ring (4) are provided with a same support member (6) on the side away from the belt conveyor (2), and the support member (6) is installed on the top of the belt conveyor (2). A motor (7) is installed on the side of the support member (6) close to the belt conveyor (2), and a clamping member (8) with a U-shaped cross section is installed on the output shaft of the motor (7). The inner ring (3) and the outer ring (4) are both provided with openings (9) on the side close to the clamping member (8), and the two ends of the clamping member (8) away from the support member (6) respectively extend into the inside of the two openings (9).

2. A PCB board visual inspection machine according to claim 1, characterized in that: Each clamping assembly comprises two electric push rods (10) arranged on the top of the belt conveyor (2), the electric push rods (10) are externally sleeved with a support seat (11) for connecting to the belt conveyor (2), and the inner wall of the support seat (11) is movably connected to the outside of the electric push rods (10) through a bearing; A fixing piece (12) with a U-shaped cross section is installed on the ends of the two electric push rods (10) that are close to each other, and a positioning piece (13) is installed on the sides of the two electric push rods (10) that are away from each other.

3. A PCB board visual inspection machine according to claim 2, characterized in that: A reflector (14) is installed on the side of the electric push rod (10) close to the support member (6) and away from the belt conveyor (2).

4. A PCB board visual inspection machine according to claim 3, characterized in that: A mounting member (15) is provided on the top of the belt conveyor (2), and both front and rear ends of the mounting member (15) are fixed to the inner wall of the cabinet (1). A hydraulic cylinder (16) is installed at the bottom of the mounting member (15), and a camera (17) is installed at the bottom end of the hydraulic cylinder (16); Infrared sensors (18) are installed at the bottoms of both front and rear ends of the mounting member (15), and the positions of the infrared sensor (18) and one of the reflective members (14) correspond to each other in the vertical direction.

5. The PCB visual inspection machine according to claim 1, wherein: A connecting piece (19) for connecting to the inner wall of the cabinet (1) is installed on the side of the inner ring (3) and the outer ring (4) away from the belt conveyor (2).

6. A PCB board visual inspection machine according to claim 2, characterized in that: The cross-sections of the positioning member (13) and the clamping member (8) are both rectangular.

7. The PCB visual inspection machine according to claim 1, wherein: A feed port (20) is provided on the front side of the cabinet (1), a discharge port (21) is provided at one end of the cabinet (1), the belt conveyor (2) is arranged inside the discharge port (21), and a controller (22) is installed on the front side of the cabinet (1).

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