Circuit board appearance detection machine

Abstract

The utility model discloses a circuit board appearance detection machine, including marking device, detection device, sorting device and feeding device. Marking device includes the feeding bin for the stacking of the circuit board of waiting for testing, sets up the marking mechanism at the feeding bin top, and the marking mechanism is used to mark the circuit board of waiting for testing, detection device is located at the side of feeding bin, including detection platform, the CCD camera of being located detection platform top, and the CCD camera is used to carry out appearance detection to the circuit board on detection platform, sorting device includes the finished product bin and the defective product bin of setting side by side, feeding device includes motor screw rod module, lift cylinder and sucking disc subassembly, and sucking disc subassembly is used to take the circuit board of feeding bin to detection platform and carries out detection, then according to the detection result, takes the finished product bin or defective product bin. Therefore, can realize circuit board laminated automatic feeding, automatic marking, high accuracy CCD detection and intelligent sorting, solve the limitation of artificial detection, and promote production yield and automation level.

Description

Technical Field

[0001] This utility model relates to the field of circuit board manufacturing, and in particular to a circuit board appearance inspection machine. Background Technology

[0002] In the circuit board manufacturing process, visual inspection is a crucial step in ensuring product quality. Traditional manual inspection methods suffer from low efficiency, high false positive rates, and high labor intensity, making them unsuitable for the demands of modern intelligent manufacturing. Manual inspection is limited by the operator's experience and fatigue level, easily missing minor defects (such as scratches, oxidation, and poor solder pads), and its inspection speed is difficult to improve, impacting overall production efficiency. Furthermore, the process of manually sorting and marking defective products is cumbersome, easily leading to mixed materials or incorrect inspections, increasing subsequent rework costs.

[0003] Currently, some automated inspection equipment uses conveyor belts to transport circuit boards, but the following technical defects still exist: (1) The feeding method is mostly single-layer arrangement, which cannot efficiently handle stacked circuit boards, affecting the efficiency of continuous operation; (2) Traditional mechanical clamping is prone to causing damage to the surface of the circuit board, and the positioning accuracy is insufficient; (3) The sorting mechanism lacks intelligent marking function, making it difficult to trace defective products. Therefore, there is an urgent need for an efficient and accurate automatic appearance inspection equipment for circuit boards that can realize automatic feeding, automatic marking, high-precision CCD detection and intelligent sorting of stacked circuit boards, so as to solve the limitations of manual inspection and improve the production yield and automation level. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a circuit board appearance inspection machine that can automatically feed, mark, perform high-precision CCD inspection, and intelligently sort circuit boards, thereby overcoming the limitations of manual inspection and improving production yield and automation levels.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A circuit board appearance inspection machine, comprising

[0007] The marking device includes a feeding bin for stacking circuit boards to be tested and a marking mechanism disposed above the feeding bin, the marking mechanism being used to mark the circuit boards to be tested;

[0008] The inspection device, located on one side of the feeding hopper, includes an inspection platform and a CCD camera located above the inspection platform. The inspection platform is used to receive the circuit board from the feeding hopper, and the CCD camera is used to perform appearance inspection on the circuit board on the inspection platform.

[0009] The sorting device is located on the other side of the detection device, away from the feeding hopper, and includes a finished product hopper and a defective product hopper arranged side by side.

[0010] The feeding device includes a motor screw module horizontally arranged along the direction of the marking device, the detection device and the sorting device, a lifting cylinder that moves along the motor screw module, and a suction cup assembly disposed at the output end of the lifting cylinder. The suction cup assembly is used to pick up the circuit board of the feeding bin and place it on the detection platform for detection, and then pick it up to the finished product bin or the defective product bin according to the detection result.

[0011] A circuit board appearance inspection machine according to an embodiment of the present invention has at least the following beneficial effects: The circuit board appearance inspection machine provided by this embodiment integrates a marking device, a detection device, a sorting device, and a feeding device, realizing fully automated operation of circuit boards from stacked loading, automatic marking, automatic detection, and intelligent sorting. This equipment effectively solves the problems of low efficiency and high false detection rate of traditional manual inspection, significantly improving the inspection speed and consistency of the production line. By pre-marking the circuit boards to be tested through the marking mechanism, combined with high-precision visual inspection by a CCD camera, appearance defects can be accurately identified, ensuring traceability of defective products. The feeding device uses a motor screw module and a suction cup assembly working together to achieve precise picking and placing and rapid transfer of circuit boards, avoiding damage that may be caused by manual operation. The separate design of the finished product warehouse and the defective product warehouse further optimizes the sorting process and facilitates subsequent processing. The overall structure is compact and highly automated, which can significantly reduce labor costs, improve production yield, and is suitable for the quality control needs of large-scale circuit board manufacturing.

[0012] According to some embodiments of the present invention, the feeding bin includes a feeding rack for stacking circuit boards to be tested and a first motor screw lifting mechanism for driving the feeding rack to rise and fall.

[0013] The advantages are: the lifting mechanism of the first motor screw drives the lifting of the feeding rack, realizing automatic feeding of the stacked circuit boards, reducing manual intervention, improving feeding efficiency, and ensuring accurate picking position.

[0014] According to some embodiments of the present invention, the finished product warehouse includes a finished product rack for storing good quality circuit boards and a second motor screw lifting mechanism for driving the finished product rack to rise and fall.

[0015] The advantage is that the second motor screw lifting mechanism dynamically adjusts its height according to the number of circuit boards on the product rack, and works with the lifting mechanism to drive the suction component to put up and take up the circuit boards, which facilitates the storage of qualified circuit boards and prevents the circuit boards from being damaged by falling or bumping.

[0016] According to some embodiments of the present invention, the defective product warehouse includes a defective product rack for storing defective circuit boards and a third motor screw lifting mechanism for driving the defective product rack to rise and fall.

[0017] The advantage is that the third motor screw lifting mechanism dynamically adjusts the height according to the number of circuit boards on the defective product rack, and works with the lifting mechanism to drive the suction component to put and take up the circuit boards, which makes it easy to store the circuit boards that fail the test, and also makes it easy to take them out for subsequent repair or scrapping.

[0018] According to some embodiments of this utility model, the marking mechanism is a laser marking machine.

[0019] The benefits are that laser marking is non-contact and highly precise, allowing for the rapid marking of unique identifiers on circuit boards, ensuring traceability of each board and improving quality management.

[0020] According to some embodiments of this utility model, the feeding hopper, the finished product hopper, and the defective product hopper are located at the same height.

[0021] The benefits are: the unified height design optimizes the feeding path, ensuring that the lifting mechanism drives the suction component to pick up and put down materials at a consistent height, thereby improving equipment operating efficiency and reducing energy consumption.

[0022] According to some embodiments of this utility model, the marking mechanism and the CCD camera are located at the same height and are mounted on the same mounting beam.

[0023] The benefits are: this simplifies the equipment structure layout, reduces manufacturing costs, ensures precise alignment of the marking and testing stations, optimizes the workflow, and enables the marking and testing actions to be quickly connected, significantly improving the overall testing efficiency.

[0024] According to some embodiments of the present invention, the motor lead screw module is located outside the marking device, the detection device and the sorting device. The feeding device also includes a slider that moves along the motor lead screw module. The slider extends into the detection platform and the CCD camera at a certain height. The lifting cylinder is disposed on the slider.

[0025] The advantages are: the outer layout saves space and prevents it from affecting the operation of the marking mechanism and CCD camera; the extended design of the slider ensures that the suction cup assembly accurately covers the marking station, inspection station and loading / unloading station, improving the stability of transfer and positioning accuracy.

[0026] According to some embodiments of the present invention, the circuit board appearance inspection machine is provided with a transparent protective plate on its periphery.

[0027] The benefits are that the transparent protective plate not only ensures the safety of operators but also facilitates the observation of the equipment's operating status, while preventing dust from contaminating the circuit boards and ensuring a clean testing environment.

[0028] According to some embodiments of the present invention, the detection platform is provided with a display screen that is electrically connected to the CCD camera on its lower side.

[0029] The advantages are: the display screen shows the CCD camera's detection results in real time, which makes it easier for operators to monitor the quality status, detect abnormalities in a timely manner, and improve the visibility of production management.

[0030] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of an embodiment of the present utility model;

[0033] Figure 2 for Figure 1 Remove the top view of the marking mechanism and CCD camera;

[0034] Figure 3 for Figure 1 Internal diagram of the upper and middle material silos;

[0035] Figure 4 for Figure 1 Internal schematic diagram of the sorting device.

[0036] Reference numerals: 100 for feeding hopper, 110 for marking mechanism, 120 for inspection platform, 130 for CCD camera, 140 for finished product hopper, 150 for defective product hopper, 160 for motor screw module, 170 for lifting cylinder, 180 for suction cup assembly, 190 for feeding rack, 200 for first motor screw lifting mechanism, 210 for finished product rack, 220 for second motor screw lifting mechanism, 230 for defective product rack, 240 for third motor screw lifting mechanism, 250 for mounting beam, 260 for slider, 270 for transparent protective plate, and 280 for display screen. Detailed Implementation

[0037] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0038] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] The following is for reference. Figures 1-4 A circuit board appearance inspection machine is described in detail with reference to a specific embodiment. It is to be understood that the following description is merely illustrative and not intended to limit the scope of the invention.

[0042] like Figures 1-2 As shown, a circuit board appearance inspection machine includes a marking device, an inspection device, a sorting device, and a feeding device.

[0043] The marking device includes a loading bin 100 for stacking circuit boards to be tested and a marking mechanism 110 positioned above the loading bin 100. The marking mechanism 110 is used to mark the circuit boards to be tested. The testing device is located on one side of the loading bin 100 and includes a testing platform 120 and a CCD camera 130 positioned above the testing platform 120. The testing platform 120 receives the circuit boards from the loading bin 100, and the CCD camera 130 performs visual inspection on the circuit boards on the testing platform 120. The sorting device is located on the other side of the loading bin 100, opposite the testing device, and includes a finished product bin 140 and a defective product bin 150 arranged side-by-side. The feeding device includes components along the direction of the marking device, testing device, and sorting device. The circuit board appearance inspection machine provided in this embodiment includes a horizontally arranged motor screw module 160, a lifting cylinder 170 that moves along the motor screw module 160, and a suction cup assembly 180 located at the output end of the lifting cylinder 170. The suction cup assembly 180 is used to pick up the circuit board from the loading bin 100 and place it on the inspection platform 120 for inspection. Then, based on the inspection results, it is picked up and placed in the finished product bin 140 or the defective product bin 150. It should be noted that the suction cup assembly 180 should be equipped with a distance sensor, which helps the lifting cylinder 170 adjust the lifting height according to the distance between the suction cup assembly 180 and the circuit board, preventing insufficient picking distance or damage to the circuit board. Moreover, when the circuit board is marked and CCD inspected, the motor screw module 160 needs to move the suction cup assembly 180 away to prevent obstruction. This embodiment of the utility model provides a circuit board appearance inspection machine that, by integrating a marking device, an inspection device, a sorting device, and a feeding device, realizes the fully automated operation of circuit boards from stacked loading, automatic marking, automatic inspection, and intelligent sorting. This equipment effectively solves the problems of low efficiency and high false detection rate in traditional manual inspection, significantly improving the inspection speed and consistency of the production line. By pre-marking the circuit boards to be tested through the marking mechanism 110, combined with high-precision visual inspection by the CCD camera 130, appearance defects can be accurately identified, ensuring traceability of defective products. The feeding device uses a motor screw module 160 and a suction cup assembly 180 working in tandem to achieve precise picking, placing, and rapid transfer of circuit boards, avoiding damage that may be caused by manual operation. The separate design of the finished product bin 140 and the defective product bin 150 further optimizes the sorting process and facilitates subsequent processing. The overall structure is compact and highly automated, significantly reducing labor costs and improving production yield, making it suitable for the quality control needs of large-scale circuit board manufacturing.

[0044] like Figure 3 and Figure 4As shown, the loading bin 100 includes a loading rack 190 for stacking circuit boards to be tested and a first motor screw lifting mechanism 200 for driving the loading rack 190 to rise and fall. The first motor screw lifting mechanism 200 drives the loading rack 190 to rise and fall, achieving automatic feeding of stacked circuit boards, reducing manual intervention, improving loading efficiency, and ensuring accurate material retrieval. Correspondingly, the finished product bin 140 includes a finished product rack 210 for storing good circuit boards and a second motor screw lifting mechanism 220 for driving the finished product rack 210 to rise and fall. The second motor screw lifting mechanism 220 dynamically adjusts its height according to the number of circuit boards on the product rack, and works with the lifting mechanism to drive the suction component to place and retrieve circuit boards, facilitating the storage of qualified circuit boards and preventing damage from drops and collisions. Similarly, the defective product bin 150 includes a defective product rack 230 for storing defective circuit boards and a third motor screw lifting mechanism 240 for driving the defective product rack 230 to rise and fall. The third motor screw lifting mechanism 240 dynamically adjusts its height according to the number of circuit boards in the defective product rack 230. It works in conjunction with the lifting mechanism to drive the suction component to put and take up circuit boards, which facilitates the storage of circuit boards that fail the inspection and also makes it easy to take them out for subsequent rework or scrapping.

[0045] Specifically, such as Figure 1 As shown, the marking mechanism 110 is a laser marking machine. Laser marking features non-contact and high precision, enabling rapid marking of unique identifiers on circuit boards, ensuring traceability of each circuit board and improving quality management. It's worth noting that the feeding bin 100, finished product bin 140, and defective product bin 150 are located at the same height. This unified height design optimizes the feeding path, ensuring consistent lifting and placing heights of the lifting mechanism and the suction component, improving equipment operating efficiency and reducing energy consumption. Furthermore, the marking mechanism 110 and the CCD camera 130 are located at the same height and mounted on the same mounting beam 250. This simplifies the equipment layout, reduces manufacturing costs, ensures precise alignment between marking and inspection stations, optimizes the workflow, and allows for rapid integration of marking and inspection actions, significantly improving overall inspection efficiency.

[0046] like Figure 2 As shown, the motor screw module 160 is located outside the marking device, detection device, and sorting device. The feeding device also includes a slider 260 that moves along the motor screw module 160. The slider 260 extends into the height between the detection platform 120 and the CCD camera 130. A lifting cylinder 170 is mounted on the slider 260. The external layout saves space and prevents interference with the operation of the marking mechanism 110 and the CCD camera 130. The extended design of the slider 260 ensures that the suction cup assembly 180 accurately covers the marking station, detection station, and loading / unloading station, improving transfer stability and positioning accuracy.

[0047] It is worth mentioning that the circuit board appearance inspection machine is equipped with a transparent protective plate 270. The transparent protective plate 270 not only ensures operator safety and facilitates observation of the equipment's operating status, but also prevents dust from contaminating the circuit boards, ensuring a clean testing environment. Figure 1 As shown, a display screen 280 electrically connected to a CCD camera 130 is provided on the lower side of the inspection platform 120. The display screen 280 displays the inspection results of the CCD camera 130 in real time, which facilitates operators to monitor the quality status, detect abnormalities in a timely manner, and improve the visibility of production management.

[0048] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0049] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A circuit board appearance inspection machine, characterized in that, include: The marking device includes a loading bin (100) for stacking circuit boards to be tested and a marking mechanism (110) disposed above the loading bin (100), the marking mechanism (110) being used to mark the circuit boards to be tested; The inspection device, located on one side of the loading hopper (100), includes an inspection platform (120) and a CCD camera (130) located above the inspection platform (120). The inspection platform (120) is used to receive the circuit board from the loading hopper (100), and the CCD camera (130) is used to perform appearance inspection on the circuit board on the inspection platform (120). The sorting device is located on the other side of the detection device away from the feeding hopper (100), and includes a finished product hopper (140) and a defective product hopper (150) arranged side by side. The feeding device includes a motor screw module (160) arranged horizontally along the direction of the marking device, the detection device and the sorting device, a lifting cylinder (170) that moves along the motor screw module (160), and a suction cup assembly (180) disposed at the output end of the lifting cylinder (170). The suction cup assembly (180) is used to pick up the circuit board of the feeding bin (100) and place it on the detection platform (120) for detection, and then pick it up to the finished product bin (140) or the defective product bin (150) according to the detection result.

2. The circuit board appearance inspection machine according to claim 1, characterized in that, The loading bin (100) includes a loading rack (190) for stacking circuit boards to be tested and a first motor screw lifting mechanism (200) for driving the loading rack (190) to rise and fall.

3. The circuit board appearance inspection machine according to claim 2, characterized in that, The finished product warehouse (140) includes a finished product rack (210) for storing good quality circuit boards and a second motor screw lifting mechanism (220) for driving the finished product rack (210) to rise and fall.

4. A circuit board appearance inspection machine according to claim 3, characterized in that, The defective product warehouse (150) includes a defective product rack (230) for storing defective circuit boards and a third motor screw lifting mechanism (240) for driving the defective product rack (230) to rise and fall.

5. A circuit board appearance inspection machine according to claim 1, characterized in that, The marking mechanism (110) is a laser marking machine.

6. A circuit board appearance inspection machine according to claim 1, characterized in that, The feeding hopper (100), the finished product hopper (140), and the defective product hopper (150) are located at the same height.

7. A circuit board appearance inspection machine according to claim 6, characterized in that, The marking mechanism (110) and the CCD camera (130) are located at the same height and are mounted on the same mounting beam (250).

8. A circuit board appearance inspection machine according to claim 7, characterized in that, The motor screw module (160) is located outside the marking device, the detection device and the sorting device. The feeding device also includes a slider (260) that moves along the motor screw module (160). The slider (260) extends into the height between the detection platform (120) and the CCD camera (130). The lifting cylinder (170) is mounted on the slider (260).

9. A circuit board appearance inspection machine according to claim 1, characterized in that, The circuit board appearance inspection machine is surrounded by a transparent protective plate (270).

10. A circuit board appearance inspection machine according to claim 1, characterized in that, The detection platform (120) is provided with a display screen (280) electrically connected to the CCD camera (130) on its lower side.

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