Appearance detection device for circular bead grinding of PCB (Printed Circuit Board)

Abstract

The utility model relates to the technical field of PCB (printed circuit board) processing detection, in particular to an appearance detection device for PCB fillet polishing, which comprises a base, a support frame is connected onto the base, a visual camera is mounted at the top in the support frame and used for acquiring image information of a PCB, a controller is mounted on the front side of the base, and the controller is connected with the support frame. The controller is in wired connection with the visual camera, a positioning plate is connected to the base, and a positioning assembly used for fixing a PCB is arranged on the base. Through the visual camera and the controller, image acquisition and data processing are matched, so that an automatic detection function is realized, and the purpose of improving the detection accuracy and reliability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB board processing and detection, in particular to an appearance detection device for rounding the corners of a PCB board. Background Art

[0002] As a carrier of electronic components and a provider of electrical connections, a printed circuit board (PCB) is an essential part of modern electronic devices. To facilitate assembly and prevent edge burrs from hurting operators, the edges of PCB boards usually need to be rounded. This process not only improves the safety of the product but also optimizes its appearance quality.

[0003] At present, the quality inspection of PCB boards after rounding mainly relies on manual visual inspection. Operators need to check the rounded corners of each PCB board one by one to determine whether they meet the process requirements. However, this traditional inspection method has obvious limitations.

[0004] Firstly, the accuracy of manual visual inspection is limited by the experience and fatigue of operators, and misjudgment and missed inspection are likely to occur. Secondly, in actual production, to improve efficiency, multiple PCB boards are usually stacked together for rounding. In this case, the quality of the rounded corners of the PCB boards in the middle is difficult to directly observe visually, and there may be incomplete chamfers or unqualified quality, but they cannot be discovered in time. These problems not only affect the overall quality of the product but may also cause compatibility problems in the subsequent assembly process. Summary of the Utility Model

[0005] In order to overcome the disadvantage of inaccurate detection, the utility model provides an appearance detection device for rounding the corners of a PCB board, aiming to solve the above disadvantages.

[0006] An appearance detection device for rounding the corners of a PCB board includes a base, a support frame is connected to the base, and further includes a vision camera. The vision camera is installed at the top inside the support frame. The vision camera is used to collect image information of the PCB board. A controller is installed on the front side of the base. The controller is connected to the vision camera by wire. A positioning plate is connected to the base, and a positioning component for fixing the PCB board is arranged on the base.

[0007] Preferably, the positioning component includes a mounting frame. The mounting frame is connected to the right side of the base. An electric push rod is installed on the mounting plate. The electric push rod is connected to the controller by wire. The piston rod of the electric push rod faces left and is connected to a push plate. A guide plate is connected to the left side of the push plate. The rear end of the guide plate is set as an inclined surface.

[0008] Preferably, a pull rod is slidably connected inside the base.

[0009] Preferably, a protective pad is connected to the right side of the positioning plate.

[0010] Preferably, a plurality of rollers are rotatably connected to the base.

[0011] Preferably, an alarm lamp is installed on the top of the support frame, and the alarm lamp is wired to the controller.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. Through the vision camera and the controller, image acquisition and data processing are coordinated to achieve the function of automatic detection, so as to improve the accuracy and reliability of detection.

[0014] 2. Through the positioning component and the positioning plate, the fixing and positioning of the PCB board are coordinated, effectively solving the problem of displacement of the PCB board during the detection process, thereby realizing the function of stable detection and achieving the purpose of improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0016] Figure 2 It is a schematic diagram of the installation structure of the mounting frame and the electric push rod of the present utility model.

[0017] Figure 3 It is an exploded view of the connection relationship between the base and the pull rod of the present utility model.

[0018] Reference numerals in the drawings: 1 - base, 2 - support frame, 3 - vision camera, 4 - controller, 5 - positioning plate, 6 - mounting frame, 7 - electric push rod, 8 - push plate, 9 - guide plate, 10 - pull rod, 11 - protective pad, 12 - roller, 13 - alarm lamp. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will further illustrate the present utility model with specific embodiments. It should also be noted that unless otherwise clearly specified and limited, terms such as: setting, installation, connection, and coupling should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. The position descriptions selected in the specification, such as up, down, lateral, etc., also refer to the directly described and illustrated drawings and are transferred to the new position according to the meaning when the position changes. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0020] Embodiment: An appearance detection device for rounding and polishing a PCB board, as Figures 1 - 3 shown, which includes a base 1, a support frame 2, a vision camera 3, a controller 4, a positioning plate 5 and a positioning component. A support frame 2 is connected to the base 1, and a vision camera 3 is installed at the top inside the support frame 2. The vision camera 3 is used to collect image information of the rounded corners of the PCB board. A controller 4 is installed on the front side of the base 1. The controller 4 is connected to the vision camera 3 by wire. The controller 4 is used to process image data and judge the quality of the rounded corners of the PCB board. A positioning plate 5 is connected to the base 1, and a positioning component for stabilizing the PCB board is arranged on the base 1.

[0021] As Figure 1 and Figure 2 shown, the positioning component includes a mounting frame 6, an electric push rod 7, a push plate 8 and a guide plate 9. The mounting frame 6 is connected to the right side of the base 1, and an electric push rod 7 is installed on the mounting frame 6. The electric push rod 7 is connected to the controller 4 by wire. The piston rod of the electric push rod 7 faces leftward and is connected to a push plate 8. A guide plate 9 is connected to the left side of the push plate 8, and the rear end of the guide plate 9 is set as an inclined surface. Through the push of the electric push rod 7, the push plate 8 and the guide plate 9 can firmly press the PCB board on the positioning plate 5 to prevent the PCB board from shifting during the detection process.

[0022] As Figure 1 and Figure 3 shown, it further includes a pull rod 10. The pull rod 10 is slidably connected inside the base 1. The pull rod 10 contacts the PCB board and can pull out the PCB board after the detection is completed, facilitating the operation of the operator to pick up and place, and improving the detection efficiency.

[0023] As Figure 1 and Figure 3 shown, it further includes a protection pad 11. The protection pad 11 is connected to the right side of the positioning plate 5. The protection pad 11 can prevent the PCB board from being worn or scratched during the positioning process and protect the edge quality of the PCB board.

[0024] As Figure 1 and Figure 3 shown, it further includes rollers 12. A plurality of rollers 12 are rotatably connected to the base 1. The rollers 12 contact the bottom of the PCB board. Through rolling friction, the PCB board can move smoothly under the action of the pull rod 10, reducing the frictional resistance and avoiding damage to the surface of the PCB board.

[0025] As Figure 1 shown, it further includes an alarm lamp 13. The alarm lamp 13 is installed at the top of the support frame 2. The alarm lamp 13 is connected to the controller 4 by wire. When the vision camera 3 detects a rounded corner defect, the controller 4 can trigger the alarm lamp 13 to emit a warning signal, facilitating the operator to handle it in time.

[0026] The staff places the chamfered PCB board on the base 1 and fits the left side of the PCB board against the positioning plate 5. The protective pad 11 can prevent the PCB board from being scratched, thereby protecting the edge quality of the PCB board. Subsequently, the electric push rod 7 is started through the controller 4, and the electric push rod 7 pushes the push plate 8 and the guide plate 9 to move to the left. After the inclined surface of the guide plate 9 contacts the PCB board, it pushes the PCB board to fit against the right side of the positioning plate 5. During the movement of the PCB board, the bottom slides through the rollers 12, and the rolling friction reduces the frictional force required to be overcome during movement, making the movement of the PCB board smoother. During the backward movement of the PCB board, the pull rod 10 is squeezed, and the pull rod 10 slides backward in the base 1 to assist in fixing the PCB board.

[0027] Since the distance between the vision camera 3 and the PCB board is constant, after the vision camera 3 is turned on through the controller 4, the diameter of the rounded corner is calculated by measuring the contour line length of the captured image. At the same time, the vision camera 3 further detects whether the position of the rounded corner is aligned. If the detection result shows that the rounded corner is unqualified, the controller 4 immediately activates the alarm light 13 after receiving the signal to remind the staff. The staff can obtain the position information of the unqualified rounded corner through the controller 4; if the detection is qualified, the controller 4 displays a qualified prompt.

[0028] After the detection is completed, the PCB board needs to be removed. During the removal process, first, the electric push rod 7 is used to pull the push plate 8 and the guide plate 9 to release the clamping and fixing of the PCB board. Subsequently, the pull rod 10 is pulled to move the PCB board forward, solving the problem of having no place to pick it up and accelerating the material change speed.

[0029] The above embodiments are only used to illustrate the technical concept and features of the present invention, and their purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it should not be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. An appearance inspection device for rounded corner polishing of a PCB board, comprising a base (1), to which a support frame (2) is connected, characterized in that: The device also comprises a visual camera (3), the visual camera (3) being mounted on the top of the support frame (2), the visual camera (3) being used to collect image information of a PCB board, a controller (4) being mounted on the front side of the base (1), the controller (4) being connected to the visual camera (3) by wire, a positioning plate (5) being connected to the base (1), a positioning component for fixing the PCB board being arranged on the base (1), the positioning component comprising a mounting frame (6), the mounting frame (6) being connected to the right side of the base (1), an electric push rod (7) being mounted on the mounting frame (6), the electric push rod (7) being connected to the controller (4) by wire, the piston rod of the electric push rod (7) facing the left side and being connected to a push plate (8), the left side of the push plate (8) being connected to a guide plate (9), the guide plate (9) being provided with an inclined surface facing the support frame (2), and a plurality of rollers (12) being rotatably connected to the base (1).

2. The appearance inspection device for PCB board fillet grinding according to claim 1, characterized in that: A pull rod (10) is slidably connected inside the base (1).

3. The appearance inspection device for PCB board fillet grinding according to claim 2, characterized in that: A protection pad (11) is connected to the right side of the positioning plate (5).

4. The appearance inspection device for PCB board fillet grinding according to claim 3 is characterized in that: An alarm light (13) is installed on the top of the support frame (2), and the alarm light (13) is connected to the controller (4) via a wire.

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