Surface-mounted resistor appearance detection equipment

Abstract

The utility model discloses chip resistor appearance detection equipment, which is characterized in that a conveying belt device comprises two parallel conveying belts, and two sides of the conveying belt device are respectively provided with a camera module and a suspension bracket for assembling the camera module; each camera module comprises two movably-arranged Y-axis camera units and a movably-arranged X-axis camera unit, the Y-axis camera units are installed on the Y-direction supporting rods, and the shooting angles of the Y-axis camera units are movably arranged with the Y-direction supporting rods as rotating shafts; the X-axis camera units are installed on the X-direction supporting rod, the shooting angles of the X-axis camera units are perpendicular to the conveying belt in the horizontal direction, and the two X-axis camera units and the Y-axis camera unit are electrically connected to the control device. According to the detection equipment with the double-conveyor-belt structure, the appearance detection of two resistor material sheets can be carried out in one detection period, so that the detection efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of resistance testing equipment technology, and in particular to a surface mount resistor appearance testing device. Background Technology

[0002] Visual inspection is a crucial step in the production of surface mount resistors. It ensures quality, prevents defective components from entering the production line, and avoids subsequent problems. For example, a cracked resistor or poor soldering can cause the entire circuit board to fail. Visual inspection also includes checking the accuracy of markings and the clarity of resistance values ​​to ensure correct identification by the machine during automated placement. Furthermore, visual inspection of surface mount resistors also checks whether their dimensions conform to specifications; otherwise, installation problems will occur.

[0003] Existing visual inspection machines typically only have a single conveyor belt, allowing for the visual inspection of only one resistor sheet per inspection cycle, resulting in low efficiency. Furthermore, the camera's inspection angle is difficult to adjust, making it inconvenient for visually inspecting surface mount resistors of different specifications. Therefore, improvements are necessary. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a surface mount resistor appearance inspection device, which is equipped with dual conveyor belts and two sets of inspection camera modules to perform appearance inspection of two surface mount resistors within the same inspection cycle. In addition, the adjustment structure of the camera is improved to enhance the convenience of camera adjustment.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a surface mount resistor appearance inspection device, comprising a machine body, a control device, and a conveyor belt device located on the top of the machine body. The conveyor belt device includes two parallel conveyor belts. A camera module and a suspension bracket for assembling the camera module are respectively provided on both sides of the conveyor belt device. The suspension bracket includes a fixed support, an X-axis support rod, and a Y-axis support rod arranged horizontally. The fixed support is fixedly installed on the machine body or the conveyor belt device. One end of the X-axis support rod is connected to the top of the fixed support, and the extension direction of the X-axis support rod is perpendicular to the conveyor belt. The Y-axis support rod is fixed to the outer end of the X-axis support rod, and the Y-axis support rod is located directly above the corresponding conveyor belt. The extension direction of the Y-axis support rod is perpendicular to the conveyor belt. The conveyor belts travel in the same direction. Each camera module includes two movable Y-axis camera units and one movable X-axis camera unit. The Y-axis camera units are mounted on the Y-axis support rod, and their shooting angle is flexibly set around the Y-axis support rod. The X-axis camera unit is mounted on the X-axis support rod, and its shooting angle is perpendicular to the conveyor belt in the horizontal direction. The two X-axis camera units and the Y-axis camera unit are electrically connected to the control device. Within the same detection cycle, the camera modules on both sides capture images of the resistive sheet placed on the conveyor belts on both sides. At least three different perspective images are obtained from each resistive sheet, and the images are sent to the control device for screening and detection.

[0006] In a further technical solution, the Y-axis camera unit includes a connecting sleeve that is fitted onto the Y-axis support rod. One Y-axis camera unit in the same camera module has its shooting angle set vertically downwards to form a top-down view sample acquisition source. The shooting angle of the other Y-axis camera unit is set at an angle and faces the adjacent conveyor belt to form an oblique view sample acquisition source. The X-axis camera unit includes another connecting sleeve with a right-angle connector at its bottom. The X-axis camera unit is fixed to the outer end of the right-angle connector. The shooting angle of the X-axis camera unit is always perpendicular to the conveyor belt in the horizontal direction to form a side view sample acquisition source.

[0007] In a further technical solution, the top of the fixed support is provided with a through insertion hole, and the X-axis support rod is movably inserted into the insertion hole to realize the position adjustment of each camera unit along the X-axis; the outer end of the X-axis support rod is provided with a clamp, and the Y-axis support rod is movably clamped in the clamp to realize the synchronous adjustment of the Y-axis camera unit along the X-axis.

[0008] In a further technical solution, the conveyor belt device includes two rollers located at the feeding end and the discharging end of the conveyor belt device, respectively. Two conveyor belts are wound around these two rollers, and a drive motor is drivenly connected to either roller. The drive motor is electrically connected to a control device.

[0009] In a further technical solution, a hollow space is formed between the two conveyor belts, and a dust collection device is installed in the middle of the hollow space; an illumination lamp device is installed on each side of the hollow space, and the illumination angle of the illumination lamp device is set at an upward angle.

[0010] In a further technical solution, a Y-axis support is provided below the conveyor belt device; the Y-axis support is provided with a movable support base; the dust collection device is fixed to the movable support base, and the top of the dust collection device is provided with a funnel-shaped dust collection hood, which is set vertically upward.

[0011] In a further technical solution, a universal nozzle device is provided on each side of the conveyor belt device for pneumatically pushing out substandard resistance sheet material. A solenoid valve is provided at the bottom of the universal nozzle device. The universal nozzle device is connected to an external air pressure device through the solenoid valve, and the solenoid valve signal is connected to a control device.

[0012] In a further technical solution, the maximum rotation angle of the X-axis camera unit is 60 degrees.

[0013] In a further technical solution, a display is also installed on the top of the machine body. The display signal is connected to the control device to output the test samples of the resistive sheet material on both conveyor belts.

[0014] In a further technical solution, rollers and positioning support feet are respectively provided at the four corners of the bottom surface of the machine body, wherein the positioning support feet are connected to the bottom of the machine body by threads.

[0015] The advantages of this invention compared to the prior art after adopting the above structure are:

[0016] 1. It adopts a parallel double conveyor belt structure, with independent conveying of chip resistors on both sides. Combined with symmetrically arranged camera modules, it can simultaneously collect multi-angle data on two resistors within the same detection cycle, improving the detection efficiency by about 100% compared to traditional single conveyor belt equipment, thus meeting the needs of large-scale production.

[0017] 2. Each camera module integrates three detection perspectives: top-down (vertical Y-axis), oblique (tilted Y-axis), and side-view (horizontal X-axis). A single inspection can acquire high-definition images of key areas such as the top, sides, and solder joints of the resistor, avoiding missed detections due to a single angle. This is especially suitable for identifying subtle defects such as cracks, solder joint misalignment, and unclear markings. 3. The X / Y axis support rods achieve multi-dimensional position adjustment of the camera in the horizontal / vertical directions through insertion holes, clamps, and sockets. Combined with the camera unit's rotation function, it can quickly adapt to the detection needs of resistors of different sizes, reducing equipment modification and debugging costs, and offering significantly better compatibility than traditional fixed structures. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a structural schematic diagram of the conveyor belt device in this utility model.

[0021] Figure 3 This is a top view of the conveyor belt device in this utility model. Figure 4 This is a structural schematic diagram of the Y-axis camera in this utility model. Detailed Implementation

[0022] The following are merely preferred embodiments of the present invention and do not limit the scope of protection of the present invention.

[0023] like Figures 1 to 4 As shown, a surface mount resistor appearance inspection device includes a machine body 1, a control device, and a conveyor belt device 2 located on top of the machine body 1. The conveyor belt device 2 includes two parallel conveyor belts, with a camera module and a suspension bracket for mounting the camera module on each side of the conveyor belt device 2. The suspension bracket includes a fixed support 31, an X-axis support rod 32 and a Y-axis support rod 34 arranged horizontally. The fixed support 31 is fixedly installed on the machine body 1 or the conveyor belt device 2. One end of the X-axis support rod 32 is connected to the top of the fixed support 31, and the extension direction of the X-axis support rod 32 is perpendicular to the conveyor belt. The Y-axis support rod 34 is fixed to the outer end of the X-axis support rod 32, and the Y-axis support rod 34 is located directly above the corresponding conveyor belt. The extension direction of the Y-axis support rod 34 is the same as the transmission direction of the conveyor belt. Each camera module includes two movable Y-axis camera units 301 and one movable X-axis camera unit 302. The Y-axis camera units 301 are mounted on the Y-axis support rod 34, and their shooting angle is movably set with the Y-axis support rod 34 as the rotation axis. The X-axis camera unit 302 is mounted on the X-axis support rod 32, and its shooting angle is perpendicular to the conveyor belt in the horizontal direction. The two X-axis camera units 302 and the Y-axis camera units 301 are electrically connected to the control device. During the same detection cycle, the camera modules on both sides take pictures and samples of the resistive material sheets placed on the conveyor belts on both sides. At least three different perspective detection samples are taken from each resistive material sheet, and the samples are sent to the control device for screening and detection.

[0024] Adopting a parallel double conveyor belt structure, the device independently transports surface-mount resistors on both sides. Combined with symmetrically arranged camera modules, it can simultaneously collect multi-angle data from two resistors within the same detection cycle, improving detection efficiency by approximately 100% compared to traditional single conveyor belt equipment, thus meeting the needs of large-scale production.

[0025] Specifically, the Y-axis camera unit 301 includes a connecting sleeve that is fitted onto the Y-axis support rod 34. In the same camera module, one Y-axis camera unit 301 is set with its shooting angle vertically downward to form a top-down view sample acquisition source; the other Y-axis camera unit 301 is set with its shooting angle tilted towards the adjacent conveyor belt to form an oblique view sample acquisition source. The X-axis camera unit 302 includes another connecting sleeve with a right-angle connector at its bottom. The X-axis camera unit 302 is fixed to the outer end of the right-angle connector. The shooting angle of the X-axis camera unit 302 is always perpendicular to the conveyor belt in the horizontal direction to form a side view sample acquisition source.

[0026] In this embodiment, there is a first conveyor belt 21 and a second conveyor belt 22, which are arranged in parallel; the sampling target of the Y-axis camera unit 301, which is close to the first conveyor belt 21 and is responsible for the oblique viewing angle, is the resistive sheet on the second conveyor belt 22; the sampling target of the Y-axis camera unit 301, which is close to the second conveyor belt 22 and is responsible for the oblique viewing angle, is the resistive sheet on the first conveyor belt 21.

[0027] Each camera module integrates three detection perspectives: top-down (vertical Y-axis), oblique (tilted Y-axis), and side-down (horizontal X-axis). A single inspection can acquire high-definition images of key parts such as the top, side, and solder joints of the resistor, avoiding missed detections due to a single angle. It is especially suitable for identifying minor defects such as cracks, solder joint misalignment, and unclear markings.

[0028] Specifically, the top of the fixed support 31 is provided with a through insertion hole, and the X-axis support rod 32 is movably inserted into the insertion hole to realize the position adjustment of each camera unit along the X-axis; the outer end of the X-axis support rod 32 is provided with a clamp 33, and the Y-axis support rod 34 is movably clamped in the clamp 33 to realize the synchronous adjustment of the Y-axis camera unit 301 along the X-axis.

[0029] The X / Y support rod enables multi-dimensional position adjustment of the camera in the horizontal / vertical direction through the plug hole, clamp and sleeve. Combined with the camera unit rotation function, it can quickly adapt to the detection needs of resistors of different sizes, reduce equipment modification and debugging costs, and has significantly better compatibility than traditional fixed structures.

[0030] Specifically, the conveyor belt device 2 includes two rollers located at the feeding end and the discharging end of the conveyor belt device 2, respectively. Two conveyor belts are wound around these two rollers respectively. A drive motor 20 is drivenly connected to either roller, and the drive motor 20 is electrically connected to a control device.

[0031] Specifically, a hollow space is formed between the two conveyor belts, and a dust collection device 83 is installed in the middle of the hollow space; an illumination lamp device 84 is installed on each side of the hollow space, and the illumination angle of the illumination lamp device 84 is set at an upward angle.

[0032] Specifically, a Y-axis support 81 is provided below the conveyor belt device 2; the Y-axis support 81 is provided with a movable support base 82; the dust collection device 83 is fixed to the movable support base 82, and the top of the dust collection device 83 is provided with a funnel-shaped dust collection hood, which is set vertically upward.

[0033] Specifically, each side of the conveyor belt device 2 is provided with a universal nozzle device 4 for pneumatically pushing out substandard resistance sheet material. The bottom of the universal nozzle device 4 is provided with a solenoid valve. The universal nozzle device 4 is connected to an external air pressure device through the solenoid valve, and the solenoid valve signal is connected to the control device.

[0034] Specifically, the maximum rotation angle of the X-axis camera unit 302 is 60 degrees.

[0035] Specifically, a display 9 is also provided on the top of the machine body 1. The display 9 is connected to the control device to output the test samples of the resistive sheet material on both conveyor belts.

[0036] Specifically, the four corners of the bottom surface of the machine body 1 are respectively provided with rollers 11 and positioning support feet 12, wherein the positioning support feet 12 are threadedly connected to the bottom of the machine body 1. The above content is only a preferred embodiment of this utility model. For those skilled in the art, based on the idea of ​​this utility model, there will be changes in the specific implementation method and application scope. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A surface mount resistor appearance inspection device, comprising a machine body (1), a control device, and a conveyor belt device (2) disposed on the top of the machine body (1), characterized in that: The conveyor belt device (2) is located on top of the machine body (1), and the conveyor belt device (2) includes two parallel conveyor belts. A camera module and a suspension bracket for mounting the camera module are respectively provided on both sides of the conveyor belt device (2). The suspension bracket includes a fixed support (31), an X-axis support rod (32) and a Y-axis support rod (34) arranged horizontally. The fixed support (31) is fixedly installed on the machine body (1) or the conveyor belt device (2). One end of the X-axis support rod (32) is connected to the top of the fixed support (31), and the extension direction of the X-axis support rod (32) is perpendicular to the conveyor belt. The Y-axis support rod (34) is fixed to the outer end of the X-axis support rod (32), and the Y-axis support rod (34) is located directly above the corresponding conveyor belt. The extension direction of the Y-axis support rod (34) is the same as the transmission direction of the conveyor belt. Each camera module includes two movable Y-axis camera units (301) and one movable X-axis camera unit (302). The Y-axis camera units (301) are mounted on the Y-axis support rod (34), and the shooting angle of the Y-axis camera units (301) is movably set about the Y-axis support rod (34) as the rotation axis. The X-axis camera unit (302) is mounted on the X-axis support rod (32), and the shooting angle of the X-axis camera unit (302) is perpendicular to the conveyor belt in the horizontal direction. The two X-axis camera units (302) and the Y-axis camera unit (301) are electrically connected to the control device. Within the same testing cycle, the camera modules on both sides take pictures of the resistive sheet placed on the conveyor belts on both sides. At least three different perspective test samples are taken from each resistive sheet and sent to the control device for screening and testing.

2. The surface mount resistor appearance inspection device according to claim 1, characterized in that: The Y-axis camera unit (301) includes a connecting sleeve that is fitted onto the Y-axis support rod (34). In the same camera module, one Y-axis camera unit (301) is positioned vertically downwards to form a top-down view sample acquisition source; the other Y-axis camera unit (301) is positioned at an angle towards the adjacent conveyor belt to form an oblique view sample acquisition source. The X-axis camera unit (302) includes another connecting sleeve. The bottom of this connecting sleeve is provided with a right-angle connector. The X-axis camera unit (302) is fixed to the outer end of the right-angle connector. The shooting angle of the X-axis camera unit (302) is always perpendicular to the conveyor belt in the horizontal direction to form a side-view sample acquisition source.

3. The surface mount resistor appearance inspection device according to claim 2, characterized in that: The top of the fixed support (31) is provided with a through insertion hole, and the X-direction support rod (32) is movably inserted into the insertion hole to realize the position adjustment of each camera unit along the X direction; the outer end of the X-direction support rod (32) is provided with a clamp (33), and the Y-direction support rod (34) is movably clamped in the clamp (33) to realize the synchronous adjustment of the Y-axis camera unit (301) along the X direction.

4. The surface mount resistor appearance inspection device according to claim 3, characterized in that: The conveyor belt device (2) includes two rollers located at the feeding end and the discharging end of the conveyor belt device (2) respectively. The two conveyor belts are respectively wound around the two rollers. A drive motor (20) is connected to either roller. The drive motor (20) is electrically connected to the control device.

5. The surface mount resistor appearance inspection device according to claim 4, characterized in that: A hollow space is formed between the two conveyor belts, and a dust collection device (83) is provided in the middle of the hollow space; an illumination lamp device (84) is provided on each side of the hollow space, and the illumination angle of the illumination lamp device (84) is set at an upward angle.

6. The surface mount resistor appearance inspection device according to claim 5, characterized in that: The conveyor belt device (2) is provided with a Y-axis support (81) below it; the Y-axis support (81) is provided with a movable support seat (82); the dust collection device (83) is fixed to the movable support seat (82), and the top of the dust collection device (83) is provided with a funnel-shaped dust collection cover, which is set vertically upward.

7. The surface mount resistor appearance inspection device according to claim 6, characterized in that: The conveyor belt device (2) is provided with a universal nozzle device (4) on each side for pneumatically pushing out substandard resistance sheet material. The bottom of the universal nozzle device (4) is provided with a solenoid valve. The universal nozzle device (4) is connected to an external air pressure device through the solenoid valve, and the solenoid valve signal is connected to the control device.

8. The surface mount resistor appearance inspection device according to claim 1, characterized in that: The maximum rotation angle of the X-axis camera unit (302) is 60 degrees.

9. The surface mount resistor appearance inspection device according to claim 1, characterized in that: A display (9) is also provided above the machine body (1). The display (9) is connected to the control device to output the test samples of the resistive sheet material on both conveyor belts.

10. The surface mount resistor appearance inspection device according to claim 1, characterized in that: The bottom of the body (1) is provided with rollers (11) and positioning support feet (12) at the four corners, and the positioning support feet (12) are connected to the bottom of the body (1) by threads.

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