Synchronous linkage visual detection module for multi-surface detection

Abstract

The invention aims to provide the multi-surface detection synchronous linkage visual detection module which is low in cost and can realize high-efficiency and high-precision detection. The device comprises a visual detection device and a product suction rotating device which are matched with each other, the visual detection device comprises a three-axis movement mechanism and a plurality of detection camera assemblies, a pitching adjustment mechanism is arranged at the movable end of the three-axis movement mechanism, and the detection camera assemblies are all arranged at the movable end of the pitching adjustment mechanism. The product suction rotating device comprises a two-axis movement mechanism and a plurality of floating suction nozzle assemblies, a rotating mechanism is arranged at the movable end of the two-axis movement mechanism, and a linkage rotating assembly is arranged at the movable end of the rotating mechanism. The plurality of floating suction nozzle assemblies are correspondingly arranged on a plurality of mutually linked movable ends on the linkage rotating assembly, and the plurality of floating suction nozzle assemblies are correspondingly matched with the plurality of detection camera assemblies. The method is applied to the technical field of visual detection.

Description

Technical Field

[0001] This invention applies to the field of visual inspection technology, and particularly relates to a synchronous linkage visual inspection module for multi-faceted inspection. Background Technology

[0002] In modern manufacturing, visual inspection technology has become a key means of ensuring product quality, widely used in numerous industries such as electronics, automotive, and machinery manufacturing. Current mainstream visual inspection solutions often employ multiple area scan cameras in conjunction with motion mechanisms for multi-position visual inspection. However, this approach has several limitations. From an efficiency perspective, its inspection speed is slow, making it difficult to meet the demands of high-speed production lines. For example, in automotive parts production, traditional area scan camera inspection solutions inspect far fewer items per minute than actual production capacity requirements, severely restricting production efficiency. Regarding image quality, due to factors such as camera resolution, lens optical performance, and lighting conditions, the acquired images often suffer from blurriness, noise, and insufficient contrast. In the inspection of precision electronic components, low-quality images make it difficult to identify subtle defects, reducing inspection accuracy. In terms of data interaction, slow data transmission speeds prevent timely support for production decisions, making it difficult to promptly detect and correct quality problems during production.

[0003] In terms of inspection, since products often require multi-faceted inspection, multi-position, multi-camera simultaneous inspection is often performed. Taking a mobile phone assembly line as an example, using a multi-station sequential inspection mode, the inspection cycle for a single mobile phone can take several minutes, which is far from meeting the demands of high production volume. Currently, multi-faceted, multi-angle visual inspection solutions mostly use six-axis robots for inspection. However, due to the limited load capacity of high-precision six-axis robots and the insufficient precision of high-load robots, the number of industrial cameras or products that can be loaded onto six-axis robots is not high at present, and the actual efficiency needs to be further improved.

[0004] Furthermore, multi-faceted inspection means that products need to be transferred continuously, which further increases the risk of damage during product transfer. For some precision 3C product parts, damage control is the most important inspection data.

[0005] While 3D vision inspection excels in accuracy and other aspects, it suffers from high costs associated with mass production. The procurement and maintenance costs of 3D vision inspection equipment are approximately 30%-50% higher than those of planar systems, limiting its application in large-scale production.

[0006] To meet the requirements of high precision and high efficiency, and to address the shortcomings of existing visual inspection technologies in terms of efficiency, image quality, cost, and data interaction, a multi-faceted inspection module with minimal damage is needed. This module would improve inspection efficiency, image quality, and data interaction speed, enabling multi-angle and multi-faceted visual inspection while reducing damage during product inspection, thereby lowering costs and reducing debugging difficulty. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a synchronous linkage visual inspection module for multi-faceted inspection that is low in cost and achieves high efficiency and high precision.

[0008] The technical solution adopted in this invention is as follows: This invention includes a visual inspection device and a product suction and rotation device that cooperate with each other. The visual inspection device includes a first motion mechanism and a plurality of detection camera components. The movable end of the first motion mechanism is provided with a pitch adjustment mechanism. The plurality of detection camera components are all disposed on the movable end of the pitch adjustment mechanism. The product suction and rotation device includes a second motion mechanism and a plurality of floating suction nozzle components. The movable end of the second motion mechanism is provided with a rotation mechanism. The movable end of the rotation mechanism is provided with a linkage rotation component. The plurality of floating suction nozzle components are correspondingly disposed on the plurality of movable ends of the linkage rotation component that are linked to each other. The plurality of floating suction nozzle components cooperate with the plurality of detection camera components.

[0009] As can be seen from the above scheme, by setting the first motion mechanism and the second motion mechanism, the horizontal distance and height position between the detection camera assembly and the floating suction nozzle assembly can be adjusted. In conjunction with the pitch adjustment mechanism and the rotation mechanism, the angle between the detection camera assembly and the floating suction nozzle assembly can be adjusted. Finally, the linkage rotation assembly achieves synchronous rotation along the axis of the product being sucked up. This allows for multi-faceted visual inspection of the product with only one loading. Simultaneously, by setting multiple sets of detection camera assemblies and multiple sets of floating suction nozzle assemblies, multiple products can be inspected simultaneously, and the linkage rotation assembly ensures consistent inspection speed, effectively improving efficiency. The synchronous linkage visual inspection module has a simple overall structure and can cover the entire product inspection, making the inspection actions efficient and simple, reducing unnecessary action time, and eliminating the need for multiple transfers to avoid product damage.

[0010] In a preferred embodiment, the detection camera assembly includes an industrial camera and a camera mount, wherein the camera mount is provided with a coaxial light source and a ring light source that cooperate with the industrial camera.

[0011] In a preferred embodiment, the pitch adjustment mechanism includes a connecting frame and a movable frame. The connecting frame is connected to the movable end of the first motion mechanism, and the movable frame is rotatably mounted on the connecting frame. A first drive motor that is pulsatorically connected to the movable frame is mounted on the connecting frame.

[0012] In a preferred embodiment, the linkage rotation assembly includes a mounting frame, a plurality of synchronous pulleys, and a plurality of synchronous motors. The plurality of synchronous pulleys are rotatably mounted on the mounting frame, which is mounted on the movable end of the rotation mechanism. The plurality of synchronous motors are mounted on the mounting frame and are correspondingly connected to the plurality of synchronous pulleys for transmission. The plurality of floating suction nozzle assemblies are correspondingly mounted on the plurality of synchronous pulleys.

[0013] In a preferred embodiment, the floating nozzle assembly includes a connecting block and a nozzle, wherein a plurality of guide rods are provided on the nozzle, the guide rods are in limiting cooperation with the connecting block, and a floating spring is sleeved on the guide rod, the floating spring being located between the connecting block and the nozzle.

[0014] In a preferred embodiment, the first motion mechanism includes a first X-axis moving motor and a first Z-axis moving motor connected in sequence. The movable end of the first X-axis moving motor is provided with a support frame. The first X-axis moving motor is fixed on the equipment frame. The support frame is slidably fitted on the equipment frame through a linear guide rail. The first Z-axis moving motor is mounted on the support frame.

[0015] A further preferred embodiment is that the second motion mechanism includes a gantry frame, a second X-axis moving motor, and a second Z-axis moving motor. The gantry frame is mounted on the equipment frame, the second X-axis moving motor is mounted on the gantry frame, the movable end of the second X-axis moving motor is provided with a transverse support, and the second Z-axis moving motor is mounted on the transverse support.

[0016] A further preferred embodiment is that the rotating mechanism includes a lifting frame and a second drive motor, the linkage rotating component is rotatably coupled to the lifting frame, the second drive motor is mounted on the lifting frame and is connected to the linkage rotating component in a transmission manner, and the lifting frame is connected to the movable end of the second Z-axis moving motor. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the visual inspection device; Figure 3 This is a three-dimensional structural diagram of the pitch adjustment mechanism; Figure 4 This is a three-dimensional structural diagram of the product suction and rotation device. Figure 5 This is a three-dimensional structural diagram of the rotating mechanism; Figure 6 This is a three-dimensional structural diagram of the linkage rotation component; Figure 7 This is a three-dimensional structural diagram of the floating nozzle assembly; Figure 8 This is a cross-sectional view of the floating nozzle assembly. Detailed Implementation

[0018] like Figures 1 to 8 As shown, in this embodiment, the present invention includes a visual inspection device 1 and a product suction and rotation device 2 that cooperate with each other. The visual inspection device 1 includes a first motion mechanism 11 and a plurality of detection camera assemblies 12. The movable end of the first motion mechanism 11 is provided with a pitch adjustment mechanism 13. The plurality of detection camera assemblies 12 are all disposed on the movable end of the pitch adjustment mechanism 13. The product suction and rotation device 2 includes a second motion mechanism 21 and a plurality of floating suction nozzle assemblies 22. The movable end of the second motion mechanism 21 is provided with a rotation mechanism 23. The movable end of the rotation mechanism 23 is provided with a linkage rotation assembly 24. The plurality of floating suction nozzle assemblies 22 are correspondingly disposed on the plurality of movable ends of the linkage rotation assembly 24 that are linked to each other. The plurality of floating suction nozzle assemblies 22 cooperate with the plurality of detection camera assemblies 12.

[0019] like Figure 3 As shown, in this embodiment, the detection camera assembly 12 includes an industrial camera 121 and a camera mount 122. The camera mount 122 is provided with a coaxial light source 123 and a ring light source 124 that cooperate with the industrial camera 121. The coaxial light source 123 and the ring light source 124 are sequentially arranged at the working end of the industrial camera 121, thereby providing coaxial light and ring light to the industrial camera 121, improving the clarity of the acquired image, and ensuring the accuracy of visual inspection.

[0020] like Figure 3As shown, in this embodiment, the pitch adjustment mechanism 13 includes a connecting frame 131 and a movable frame 132. The connecting frame 131 is connected to the movable end of the first motion mechanism 11, and the movable frame 132 is rotatably mounted on the connecting frame 131. A first drive motor 133, which is pulsatorically connected to the movable frame 132, is mounted on the connecting frame 131. The connecting frame 131 provides support, and the first drive motor 133 drives the movable frame 132 to pitch and rotate. A plurality of detection camera assemblies 12 are arrayed on the movable frame 132. During visual inspection, the detection camera assembly 12 is adjusted in conjunction with the first motion mechanism 11 to change the pitch angle between it and the corresponding floating nozzle assembly 22, thereby acquiring images of different positions on the outer surface of the product under test.

[0021] like Figure 6 As shown, in this embodiment, the linkage rotation assembly 24 includes a mounting frame 241, a plurality of synchronous pulleys 242, and two sets of synchronous motors 243. The plurality of synchronous pulleys 242 are rotatably mounted on the mounting frame 241 in two groups. The mounting frame 241 is mounted on the movable end of the rotation mechanism 23. The two sets of synchronous motors 243 are mounted on the mounting frame 241 and evenly distributed. Each set of synchronous motors 243 is connected to the corresponding plurality of synchronous pulleys 242 via a synchronous belt. The mounting frame 241 is also provided with a plurality of tension pulleys, which cooperate with the synchronous belt to ensure that the plurality of floating suction nozzle assemblies 22 are correspondingly mounted on the plurality of synchronous pulleys 242.

[0022] like Figures 6 to 8 As shown, in this embodiment, the floating nozzle assembly 22 includes a connecting block 221 and a nozzle 222. The nozzle 222 is provided with several guide rods 223. The connecting block 221 is provided with several guide holes that cooperate with the guide rods 223. A limiting block is provided at the end of the guide rod 223 away from the nozzle 222, and the limiting block cooperates with the connecting block 221. A floating spring 224 is sleeved on the guide rod 223, and the floating spring 224 is located between the connecting block 221 and the nozzle 222. The nozzle 222 is provided with a limiting groove, and vacuum adsorption holes are provided on the four end walls of the limiting groove. The vacuum adsorption holes are connected to an external vacuum generator. The floating nozzle assembly 22 enables the gripping and positioning of the product to be tested, keeping it at the corresponding workstation during visual inspection. Figure 8As shown, both the connecting block 221 and the suction nozzle 222 are provided with chambers. The connecting block 221 and the suction nozzle 222 are also provided with air nozzles connecting to the internal chambers. The air nozzles of the connecting block 221 and the suction nozzle 222 are connected. The vacuum suction hole communicates with the chamber of the suction nozzle 222. The synchronous wheel 242 is provided with an air rod connected to the connecting block 221. The chamber of the connecting block 221 is connected to the rotary joint through the internal channel of the air rod, thereby enabling the vacuum suction hole to communicate with an external vacuum generator. This also ensures that the floating suction nozzle assembly 22 will not experience tubing entanglement when rotating.

[0023] like Figure 2 As shown, in this embodiment, the first motion mechanism 11 includes a first X-axis moving motor 111 and a first Z-axis moving motor 112 connected in sequence. A support frame 113 is provided at the movable end of the first X-axis moving motor 111. The first X-axis moving motor 111 is fixed to the equipment frame, and the support frame 113 is slidably fitted onto the equipment frame via a linear guide assembly. The first Z-axis moving motor 112 is mounted on the support frame 113. The first X-axis moving motor 111 drives the pitch adjustment mechanism 13 to move closer to or further away from the product suction and rotation device 2. The first Z-axis moving motor 112 drives the pitch adjustment mechanism 13 to perform lifting and lowering movements. The linear guide assembly ensures the linear movement accuracy of the support frame 113, thereby ensuring the accuracy of visual inspection.

[0024] like Figure 4 As shown, in this embodiment, the second motion mechanism 21 includes a gantry frame 211, a second X-axis moving motor 212, and a second Z-axis moving motor 213. The gantry frame 211 is mounted on the equipment frame, the second X-axis moving motor 212 is mounted on the gantry frame 211, and a transverse support 214 is provided at the movable end of the second X-axis moving motor 212. The second Z-axis moving motor 213 is mounted on the transverse support 214. The gantry frame 211 provides support, the second X-axis moving motor 212 drives the transverse support 214 to move linearly, thereby driving the linkage rotation component 24 to move closer to or away from the vision detection device 1, and the second Z-axis moving motor 213 drives the linkage rotation component 24 to move up and down.

[0025] like Figure 5 As shown, in this embodiment, the rotating mechanism 23 includes a lifting frame 231 and a second drive motor 232. The linkage rotating component 24 is rotatably coupled to the lifting frame 231. The second drive motor 232 is disposed on the lifting frame 231 and is connected to the linkage rotating component 24 in a transmission manner. The lifting frame 231 is connected to the movable end of the second Z-axis moving motor 213.

[0026] Working principle of the invention: During visual inspection, an external feeding module moves the product to be tested to the feeding area. The second motion mechanism 21 and the rotating mechanism 23 then operate, causing the floating suction nozzle assemblies 22 to cooperate with the external feeding module to pick up the product. The floating suction nozzle assemblies 22 limit the product to be tested through limiting grooves and are connected to a vacuum generator to create negative pressure at the vacuum suction hole, thus adsorbing and positioning the product to be tested.

[0027] After the product is picked up, the product suction and rotation device 2 is reset, and the visual inspection device 1 starts to execute the visual inspection process. The positions of several inspection camera components 12 are adjusted by the first motion mechanism 11 and the pitch adjustment mechanism 13, and the position and angle of the product to be tested are adjusted by the second motion mechanism 21, the rotation mechanism 23 and the linkage rotation component 24. In this way, the product to be tested is subjected to comprehensive visual inspection except for the adsorption part, realizing batch inspection with a large inspection coverage, effectively improving inspection accuracy and inspection efficiency.

[0028] Although the embodiments of the present invention are described with reference to actual solutions, they do not constitute a limitation on the meaning of the present invention. Modifications to the embodiments and combinations with other solutions based on this specification will be obvious to those skilled in the art.

Claims

1. A synchronous linkage visual inspection module for multi-faceted detection, characterized in that: It includes a visual inspection device (1) and a product suction and rotation device (2) that work together. The visual inspection device (1) includes a first motion mechanism (11) and a plurality of detection camera assemblies (12). The movable end of the first motion mechanism (11) is provided with a pitch adjustment mechanism (13). The plurality of detection camera assemblies (12) are all provided on the movable end of the pitch adjustment mechanism (13). The product suction and rotation device (2) includes a second motion mechanism (21) and a plurality of floating suction nozzle assemblies (22). The movable end of the second motion mechanism (21) is provided with a rotation mechanism (23). The movable end of the rotation mechanism (23) is provided with a linkage rotation assembly (24). The plurality of floating suction nozzle assemblies (22) are correspondingly provided on the plurality of movable ends of the linkage rotation assembly (24) that are linked to each other. The plurality of floating suction nozzle assemblies (22) are correspondingly cooperated with the plurality of detection camera assemblies (12).

2. The synchronous linkage visual inspection module for multi-faceted detection according to claim 1, characterized in that: The detection camera assembly (12) includes an industrial camera (121) and a camera mount (122). The camera mount (122) is provided with a coaxial light source (123) and a ring light source (124) that cooperate with the industrial camera (121).

3. The synchronous linkage visual inspection module for multi-faceted detection according to claim 1, characterized in that: The pitch adjustment mechanism (13) includes a connecting frame (131) and a movable frame (132). The connecting frame (131) is connected to the movable end of the first motion mechanism (11). The movable frame (132) is rotatably mounted on the connecting frame (131). A first drive motor (133) is provided on the connecting frame (131) and is drivenly connected to the movable frame (132).

4. The synchronous linkage visual inspection module for multi-faceted detection according to claim 1, characterized in that: The linkage rotation assembly (24) includes a mounting frame (241), a plurality of synchronous pulleys (242) and a plurality of synchronous motors (243). The plurality of synchronous pulleys (242) are rotatably mounted on the mounting frame (241). The mounting frame (241) is mounted on the movable end of the rotation mechanism (23). The plurality of synchronous motors (243) are mounted on the mounting frame (241) and are correspondingly connected to the plurality of synchronous pulleys (242) for transmission. The plurality of floating nozzle assemblies (22) are correspondingly mounted on the plurality of synchronous pulleys (242).

5. The synchronous linkage visual inspection module for multi-faceted detection according to claim 1, characterized in that: The floating nozzle assembly (22) includes a connecting block (221) and a nozzle (222). A plurality of guide rods (223) are provided on the nozzle (222). The guide rods (223) are in a limiting fit with the connecting block (221). A floating spring (224) is sleeved on the guide rod (223). The floating spring (224) is located between the connecting block (221) and the nozzle (222).

6. The synchronous linkage visual inspection module for multi-faceted detection according to claim 1, characterized in that: The first motion mechanism (11) includes a first X-axis moving motor (111) and a first Z-axis moving motor (112) connected in sequence. The movable end of the first X-axis moving motor (111) is provided with a support frame (113). The first X-axis moving motor (111) is fixed on the equipment frame. The support frame (113) is slidably fitted on the equipment frame through a linear guide rail assembly. The first Z-axis moving motor (112) is mounted on the support frame (113).

7. A synchronous linkage visual inspection module for multi-faceted detection according to claim 6, characterized in that: The second motion mechanism (21) includes a gantry (211), a second X-axis moving motor (212), and a second Z-axis moving motor (213). The gantry (211) is mounted on the equipment frame, the second X-axis moving motor (212) is mounted on the gantry (211), the movable end of the second X-axis moving motor (212) is provided with a transverse support (214), and the second Z-axis moving motor (213) is mounted on the transverse support (214).

8. The synchronous linkage visual inspection module for multi-faceted detection according to claim 7, characterized in that: The rotating mechanism (23) includes a lifting frame (231) and a second drive motor (232). The linkage rotating component (24) is rotatably coupled to the lifting frame (231). The second drive motor (232) is mounted on the lifting frame (231) and is connected to the linkage rotating component (24) in a transmission manner. The lifting frame (231) is connected to the movable end of the second Z-axis moving motor (213).

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