A detection method and device for watch dial assembly

Abstract

The application provides a detection method and device for watch dial assembly, and relates to the technical field of watch dial detection. The device comprises a detection assembly and a conveying assembly. Two clamping mechanisms are arranged on the two sides of the conveying assembly and are spaced apart along a first direction. Each clamping mechanism comprises a rotating assembly. A plurality of rotating assemblies are arranged on each rotating assembly and are spaced apart. Each rotating assembly is connected with a corresponding clamping assembly. The rotating assembly drives the rotating assembly to move linearly when the rotating assembly is at a detection position. When the conveying assembly drives the assembled watch dial to move along a second direction, the rotating assembly drives the rotating assembly to rotate, the two clamping assemblies on the two sides of the conveying assembly clamp the watch dial synchronously, and the rotating assembly drives the clamping assembly connected therewith to rotate around the first direction, so that the detection assembly can visually detect the watch dial in different states. The application solves the technical problem that the watch dial is difficult to realize multi-face detection in the transmission process.

Description

Technical Field

[0001] This invention relates to the field of dial inspection technology, and in particular to an inspection method and apparatus for dial assembly. Background Technology

[0002] In precision manufacturing fields such as watchmaking, instrumentation, and smart wearable devices, the dial, as a crucial component for displaying information, directly impacts the overall appearance, functionality, and user experience of the device through its assembly quality. With the development of industrial automation and computer vision technology, visual inspection technology is increasingly being applied to dial assembly inspection.

[0003] In existing technologies, after injection molding, the watch dial needs to undergo visual inspection before the assembly process to meet the processing requirements of subsequent assembly steps. This is achieved by mounting an inspection device on a transport table to photograph and analyze the transported watch dial to determine its quality. However, traditional inspection devices typically operate at fixed angles, making multi-faceted inspection during transport difficult and affecting inspection accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide a testing method and apparatus for watch dial assembly, which solves the technical problem in the prior art that it is difficult to achieve multi-faceted testing of watch dials during transmission.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] According to a first aspect, the present invention provides a testing device for dial assembly, comprising a testing component and a conveying component. The conveying component has two clamping mechanisms spaced apart along a first direction on both sides. Each clamping mechanism includes a rotary component, and each rotary component is provided with a plurality of spaced rotating components. Each rotating component is connected to a corresponding clamping component. The rotary component is used to drive the rotating components to perform linear motion when they are in the testing position.

[0007] When the conveying component drives the assembled dial to move along the second direction, the rotating component drives the slewing component to rotate. The two adjacent clamping components on both sides of the conveying component clamp the dial synchronously. The slewing component drives the clamping component connected to it to rotate around the first direction, so that the detection component can perform visual detection on the dial in different states. The first direction and the second direction are perpendicular to each other.

[0008] Optionally, the clamping assembly includes a telescopic member, one end of which is fitted with a clamping block, and a clamping pad is fixedly connected to the clamping block;

[0009] When the clamping assembly moves to the clamping position, the telescopic member drives the clamping block to move in the direction close to the dial, so that the clamping pad makes clamping contact with the dial.

[0010] Optionally, each of the rotating components includes a rotating frame mounted on the rotary component, the telescopic member being rotatably connected to the rotating frame, and a first rotating gear being sleeved on the end of the telescopic member away from the clamping block;

[0011] The rotating frame is equipped with a rotating motor, and the output shaft of the rotating motor is equipped with a second rotating gear that meshes with the first rotating gear.

[0012] Optionally, both the first rotating gear and the second rotating gear are spur gears, and the diameter of the first rotating gear is larger than the diameter of the second rotating gear.

[0013] Optionally, the detection assembly includes a detection base frame on which a plurality of detection brackets are mounted at intervals along a second direction. Each detection bracket is equipped with a detection camera arranged along a third direction. The detection camera is used to perform visual inspection on the dials clamped by the two clamping assemblies. The first direction, the second direction, and the third direction are perpendicular to each other.

[0014] Optionally, the detection base frame includes a first frame and a second frame located at both ends of the conveying assembly along a first direction, and a third frame with a square frame structure is connected between the first frame and the second frame, and a plurality of detection brackets are fastened to the third frame.

[0015] Optionally, the detection bracket includes a first detection frame, a second detection frame, a third detection frame, and a detection sleeve. The first detection frame is fastened to the third frame, the second detection frame is fastened to the end of the first detection frame away from the conveying assembly, and the detection sleeve is fixedly sleeved with the detection camera.

[0016] One end of the third detection frame is fastened to the second detection frame by a first screw, and the other end of the third detection frame is fixedly connected to the detection sleeve. The first detection frame and the detection sleeve are fastened to each other by a second screw, and the first screw and the second screw are set perpendicularly.

[0017] According to a second aspect, the present invention provides a method for inspecting dial assembly, applied to the inspection apparatus for dial assembly as described in the first aspect, comprising:

[0018] Step S1: The assembled dial is conveyed to the detection position along the second direction by the conveying component;

[0019] Step S2: During the dial conveying process, the corresponding clamping components on both sides of the conveying component synchronously clamp the dial and rotate around a third direction under the drive of the rotating components connected to them, so as to change the current state of the dial.

[0020] Step S3: Move the dials in different states to the corresponding detection positions using the rotating component, and collect dial images in different postures using multiple detection components.

[0021] Step S4: Compare the acquired dial image with the preset template to determine whether the assembled dial is qualified.

[0022] Step S5: If yes, control the clamping component to release the dial and transfer it to the next workstation; if no, reject the unqualified dial.

[0023] Optionally, the dial has four detection states: front state, first side state, back state, and second side state. The detection component has four detection cameras, which are distributed at intervals along the second direction. Step S3 specifically includes:

[0024] Step S31: The dial in the front position is moved to the first detection camera by the rotating component, and the first detection camera captures an image of the dial in the front position.

[0025] In step S32, during the process of moving the dial in the front position to the second detection camera, the rotating component drives the clamping component to rotate, so that the dial switches to the first side position, and the second detection camera acquires the image of the dial in the first side position.

[0026] In step S33, during the process of moving the dial in the first side state to the third detection camera, the rotating component drives the clamping component to rotate, so that the dial switches to the reverse state, and the third detection camera acquires the image of the dial in the reverse state.

[0027] In step S34, during the process of moving the dial in the reverse state to the fourth detection camera, the rotating component drives the clamping component to rotate, so that the dial switches to the second side state, and the fourth detection camera acquires an image of the dial in the second side state.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] This invention provides a method and apparatus for inspecting assembled watches. By setting clamping mechanisms with rotating and swivel components on both sides of the conveying assembly, synchronous clamping and rotation of the watch dial are achieved, allowing the watch dial to rotate around a first direction during conveying. Therefore, the inspection assembly can perform visual inspection of the watch dial from multiple angles and in multiple states during transport, avoiding the blind spots caused by traditional fixed inspection angles and improving the comprehensiveness and accuracy of the inspection. Simultaneously, the clamping and rotation of the watch dial are completed synchronously during transport, eliminating the need for additional loading / unloading and secondary positioning processes, improving inspection efficiency, ensuring the stability of the inspection process and assembly quality, thereby significantly improving the yield of watch assembly and the user experience. Therefore, this invention solves the technical problem of difficulty in achieving multi-faceted inspection of watch dials during transport in the prior art. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0032] Figure 1 A three-dimensional structural schematic diagram of a detection device for dial assembly provided in an embodiment of the present invention;

[0033] Figure 2 A schematic diagram of the clamping mechanism in a testing device for dial assembly provided in an embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of the connection structure between the clamping component and the rotating component in a testing device for dial assembly provided in an embodiment of the present invention;

[0035] Figure 4 A three-dimensional structural diagram of a detection component in a detection device for dial assembly provided in an embodiment of the present invention;

[0036] Figure 5A partial structural diagram of a detection component in a detection device for dial assembly provided in an embodiment of the present invention;

[0037] Figure 6 This is a flowchart of a testing method for dial assembly provided in an embodiment of the present invention.

[0038] Illustration:

[0039] 10. Detection assembly; 11. Detection base frame; 111. First frame; 112. Second frame; 113. Third frame; 12. Detection bracket; 121. First detection frame; 122. Second detection frame; 123. Third detection frame; 124. Detection sleeve; 125. Second screw; 126. First screw; 13. Detection camera; 20. Conveying assembly; 30. Rotating assembly; 40. Rotating assembly; 41. Rotating frame; 42. First rotating gear; 43. Rotating motor; 44. Second rotating gear; 50. Clamping assembly; 51. Telescopic component; 52. Clamping block; 53. Clamping pad. Detailed Implementation

[0040] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0041] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0042] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0043] This invention provides a testing device for dial assembly, such as... Figures 1 to 5As shown, the device includes a detection component 10 and a conveying component 20. Two clamping mechanisms are distributed on both sides of the conveying component 20 and spaced apart along a first direction. Each clamping mechanism includes a rotary component 30 and multiple spaced rotating components 40 on each rotary component 30. Each rotating component 40 is connected to a corresponding clamping component 50. The rotary component 30 is used to drive the rotating component 40 to perform linear motion when it is in the detection position.

[0044] When the conveying assembly 20 moves the assembled dial along the second direction, the rotating assembly 30 drives the rotating assembly 40 to rotate. The two adjacent clamping assemblies 50 on either side of the conveying assembly 20 simultaneously clamp the dial. The rotating assembly 40 drives the connected clamping assemblies 50 to rotate around the first direction, allowing the detection assembly 10 to perform visual inspection of the dial in different states. The first and second directions are perpendicular to each other. In this embodiment, the conveying assembly 20 is a common conveying structure in the art, and will not be described in detail here.

[0045] It should be noted that the inspection device for dial assembly provided by this invention achieves synchronous clamping and rotation of the dial by setting clamping mechanisms with rotating components 30 and swivel components 40 on both sides of the conveying component 20, allowing the dial to rotate around a first direction during conveying. Therefore, the inspection component 10 can perform visual inspection of the dial from multiple angles and in multiple states during transmission, avoiding the blind spots caused by traditional fixed inspection angles and improving the comprehensiveness and accuracy of the inspection. Simultaneously, the clamping and rotation of the dial are completed synchronously during conveying, eliminating the need for additional loading / unloading and secondary positioning processes, improving inspection efficiency, ensuring the stability of the inspection process and assembly quality, thereby significantly improving the yield of dial assembly and the user experience. Therefore, this invention solves the technical problem of difficulty in achieving multi-faceted inspection of the dial during transmission in the prior art.

[0046] like Figures 1 to 3 As shown, the clamping assembly 50 includes a telescopic member 51, a clamping block 52 is installed at one end of the telescopic member 51, and a clamping pad 53 is fixedly connected to the clamping block 52.

[0047] When the clamping assembly 50 moves to the clamping position, the telescopic member 51 drives the clamping block 52 to move in the direction closer to the dial, so that the clamping pad 53 makes clamping contact with the dial. In this embodiment, the telescopic member 51 can be a telescopic cylinder or a telescopic motor.

[0048] In specific implementation, by incorporating a telescopic component 51 in the clamping assembly 50, and installing a clamping block 52 and a clamping pad 53 at the end of the telescopic component 51, the clamping assembly 50, when moved to the clamping position, can be driven by the telescopic component 51 to precisely move the clamping block 52 in the direction close to the dial, thereby ensuring reliable contact between the clamping pad 53 and the dial and achieving stable clamping. The clamping pad 53 avoids direct hard contact with the dial surface during clamping, effectively preventing scratches or damage to the dial and ensuring the appearance quality of the dial during inspection. Simultaneously, the telescopic component 51 can be selected using a telescopic cylinder or a telescopic motor as needed, not only achieving flexibility and controllability in the clamping action but also improving the applicability and versatility of the device, thereby further enhancing the stability and inspection accuracy of the entire visual inspection process.

[0049] like Figure 3 As shown, each rotating assembly 40 includes a rotating frame 41 mounted on the rotating assembly 30, a telescopic member 51 rotatably connected to the rotating frame 41, and a first rotating gear 42 sleeved on one end of the telescopic member 51 away from the clamping block 52.

[0050] The rotating frame 41 is equipped with a rotating motor 43, and the output shaft of the rotating motor 43 is equipped with a second rotating gear 44 that meshes with the first rotating gear 42.

[0051] In practice, driven by the rotary motor 43, the first rotary gear 42 is driven by the meshing of the second rotary gear 44 and the first rotary gear 42, causing the first rotary gear 42 to rotate the telescopic component 51 and its end clamping block 52 and clamping pad 53. This not only achieves controlled rotational positioning of the dial during transport but also ensures the accuracy and stability of the rotational motion. With this structure, the detection component 10 can collect multi-faceted detection data at different angles of dial rotation, thereby improving the completeness and reliability of the detection. Simultaneously, the gear transmission structure of the second rotary gear 44 and the first rotary gear 42 has the advantages of high transmission efficiency, good positioning accuracy, and compact structure, making the entire clamping and rotation process smoother and further ensuring the assembly quality and visual inspection effect of the dial.

[0052] like Figure 3 As shown, both the first rotating gear 42 and the second rotating gear 44 are spur gears, and the diameter of the first rotating gear 42 is larger than the diameter of the second rotating gear 44.

[0053] In practical implementation, by designing both the first rotating gear 42 and the second rotating gear 44 as spur gears, and making the diameter of the first rotating gear 42 larger than that of the second rotating gear 44, a speed reduction and force increase effect is achieved during gear meshing transmission. Therefore, when the rotating motor 43 outputs a high speed, the rotational speed of the telescopic component 51 and the clamping block 52 is effectively reduced through gear transmission, improving the smoothness and controllability of the rotational motion and preventing the dial from shaking or shifting during rotation. Simultaneously, the larger output torque ensures the stability and reliability of the dial clamping, thereby further improving the accuracy and detection effect of dial rotation positioning during visual inspection.

[0054] like Figure 1 and Figure 4 As shown, the detection assembly 10 includes a detection base 11, on which a plurality of detection brackets 12 are mounted at intervals along the second direction. Each detection bracket 12 is equipped with a detection camera 13 arranged along the third direction. The detection camera 13 is used to perform visual inspection on the dial held by the two clamping assemblies 50. The first direction, the second direction and the third direction are perpendicular to each other.

[0055] In practical implementation, multiple inspection brackets 12 are arranged at intervals along the second direction on the inspection base 11, and an inspection camera 13 is installed on each inspection bracket 12 along the third direction. This allows the inspection component 10 to perform synchronous visual inspection of the dial held by the clamping component 50 from multiple spatial positions during dial transport and rotation. Since the first, second, and third directions are perpendicular to each other, the inspection camera 13 can comprehensively acquire data from the dial from different angles and fields of view, effectively avoiding blind spots caused by single fixed-angle inspection, thereby improving the coverage and accuracy of the inspection. Multi-camera collaborative inspection not only improves inspection efficiency but also enhances the ability to identify dial appearance defects, assembly deviations, and other problems, ensuring the reliability and stability of the inspection results.

[0056] like Figure 1 , Figure 4 and Figure 5 As shown, the testing base frame 11 includes a first frame 111 and a second frame 112 located at both ends of the conveying assembly 20 along the first direction. A third frame 113 with a square frame structure is connected between the first frame 111 and the second frame 112. Multiple testing brackets 12 are fastened to the third frame 113.

[0057] In specific implementation, by setting a first frame 111 and a second frame 112 at both ends of the conveying assembly 20 along the first direction, and connecting the two with a third frame 113 of a rectangular structure, the detection base 11 forms a stable frame-like support structure. This structure not only enhances the overall strength and rigidity of the detection assembly 10, but also effectively reduces the positional displacement of the detection camera 13 caused by vibration or external forces during the conveying process, ensuring the stability of the camera installation and imaging accuracy. Multiple detection brackets 12 are securely mounted on the third frame 113, enabling precise positioning and multi-angle arrangement of the detection camera 13, thereby further improving the reliability of the dial visual inspection and the consistency of the inspection results.

[0058] like Figure 1 , Figure 4 and Figure 5 As shown, the detection bracket 12 includes a first detection frame 121, a second detection frame 122, a third detection frame 123, and a detection sleeve 124. The first detection frame 121 is fastened to the third frame 113, the second detection frame 122 is fastened to the end of the first detection frame 121 away from the conveying assembly 20, and the detection sleeve 124 is fixedly sleeved with the detection camera 13.

[0059] One end of the third detection frame 123 is fastened to the second detection frame 122 by the first screw 126, and the other end of the third detection frame 123 is fixedly connected to the detection sleeve 124. The first detection frame 121 and the detection sleeve 124 are fastened to each other by the second screw 125, and the first screw 126 and the second screw 125 are set perpendicularly.

[0060] It should be noted that the multi-level structural design of the detection bracket 12, consisting of a first detection frame 121, a second detection frame 122, a third detection frame 123, and a detection sleeve 124, and secured by a vertically arranged first screw 126 and second screw 125, enables adjustable installation and stable fixation of the detection camera 13 in multiple directions. This structure not only improves the flexibility of the detection camera 13 during installation, facilitating position adjustment according to dial size and detection requirements, but also ensures the camera remains stable under multi-directional stress conditions, preventing vibration or displacement from affecting image quality. The detection sleeve 124 securely attaches to the detection camera 13, further enhancing the camera's installation accuracy and reliability, making the visual inspection process more stable, and thus ensuring the accuracy and consistency of the dial inspection results.

[0061] It is worth mentioning that the rotary assembly 30 includes a first zone, a second zone, a third zone, and a fourth zone connected in sequence. The first and third zones are parallel to each other, and the rotation directions of the rotary components 40 within each zone are opposite. The third and fourth zones are arranged opposite to each other, and the rotary components 40 perform turning movements within the third and fourth zones to ensure that the rotary components 40 on the rotary assembly 30 perform rotary motion. Specifically, the rotary assembly 30 can be driven by a rotary motor to move the rotary chain plate, and the rotating frame 41 of the rotary assembly 40 is fixedly mounted on the rotary chain plate.

[0062] This invention also provides a detection method for dial assembly, applied to the detection device for dial assembly as described above, such as... Figure 6 As shown, it includes:

[0063] Step S1: The assembled dial is conveyed to the detection position along the second direction by the conveying component 20;

[0064] In step S2, during the dial conveying process, the corresponding clamping components 50 on both sides of the conveying component 20 simultaneously clamp the dial and rotate around the first direction under the drive of their respective connected rotating components 40, so as to change the current state of the dial.

[0065] Step S3: The dials in different states are moved to the corresponding detection positions by the rotating component 30, and the dial images under different postures are acquired by multiple detection components 10 respectively.

[0066] Step S4: Compare the acquired dial image with the preset template to determine whether the assembled dial is qualified.

[0067] In step S5, if yes, control the clamping component 50 to release the dial and transfer it to the next workstation; if no, reject the unqualified dial.

[0068] It should be noted that the dial moves continuously to the detection position under the drive of the conveying component 20, eliminating the need for manual handling and improving detection efficiency. The clamping component 50, driven by the rotating component 40, rotates the dial around a first direction, enabling the detection component 10 to acquire images of the dial at different angles and orientations, effectively avoiding blind spots and improving the comprehensiveness and accuracy of the detection. The images acquired by the detection component 10 are compared with a preset template to accurately identify assembly defects or appearance anomalies of the dial, ensuring the reliability of the detection results. By judging the detection results, the clamping component 50 is automatically controlled to release qualified products or reject unqualified products, avoiding manual screening and improving the automation level and yield rate of the production line. During the detection process, the dial remains in a clamped state, ensuring the stability of dial rotation and imaging. Furthermore, the method's steps are flexibly designed to adapt to the detection needs of dials of different specifications.

[0069] In one embodiment, the dial has four detection states: front state, first side state, back state, and second side state. The detection component 10 has four detection cameras 13, which are distributed at intervals along the second direction. Step S3 specifically includes:

[0070] Step S31: The dial in the front position is moved to the first detection camera 13 by the rotating component 30, and the first detection camera 13 acquires an image of the dial in the front position.

[0071] In step S32, during the process of moving the dial in the front position to the second detection camera 13, the rotating component 40 drives the clamping component 50 to rotate, so that the dial switches to the first side position, and the second detection camera 13 acquires the image of the dial in the first side position.

[0072] In step S33, during the process of moving the dial in the first side state to the third detection camera 13, the rotating component 40 drives the clamping component 50 to rotate, so that the dial switches to the reverse state, and the third detection camera 13 acquires the image of the dial in the reverse state.

[0073] In step S34, during the process of moving the dial in the reverse state to the fourth detection camera 13, the rotating component 40 drives the clamping component 50 to rotate, so that the dial switches to the second side state, and the fourth detection camera 13 acquires the image of the dial in the second side state.

[0074] It should be noted that the dial undergoes full-coverage inspection of the front, both sides, and the back sequentially during transport and rotation, avoiding the limitations of traditional inspection methods that can only inspect the front and back. The dial's posture switching is synchronized with the transport movement, requiring no additional pauses, ensuring the continuity of the inspection process and the consistency of the production cycle. By acquiring and comparing images of the dial in different states through the four inspection cameras 13 of the inspection component 10, defects in the dial's appearance, printing, assembly, etc., can be comprehensively detected, improving the completeness and accuracy of the inspection.

[0075] It is worth mentioning that, in another embodiment, step S3 specifically includes:

[0076] Based on the current dial assembly type, a corresponding target state sequence is matched from a preset state sequence library. The target state sequence includes at least two states to be detected and their detection order. In this embodiment, a state sequence library is pre-built in the control unit of the vision inspection system, storing detection state sequences corresponding to various dial types (such as round dials, square dials, dials with side buttons, dials without side buttons, etc.). Each state sequence includes all states that need to be detected for that type of dial (such as front, back, left side, right side, tilt at a specific angle, etc.) and their optimal detection order. When the assembled dial enters the inspection station, the dial's model information is first obtained through a model identification sensor (such as an RFID reader or a QR code camera). The control unit matches the corresponding target state sequence from the state sequence library based on this model information. For example, for a dial with side buttons, its target state sequence might be: [front, left side, right side, back], where the left and right sides require focused detection of the button areas.

[0077] Based on the target state sequence, the coordinated motion path of the rotary component 30 and the rotating component 40 is planned, so that the dial sequentially switches to each detection state during the transport process. In this embodiment, the control unit then calculates the coordinated motion path of the rotary component 30 and the rotating component 40 according to the target state sequence using a path planning algorithm (such as a trajectory optimization algorithm based on a kinematic model). This path ensures that the dial can efficiently and smoothly switch to each target state sequentially during transport along the second direction, while minimizing idle travel and motion jitter.

[0078] When the dial moves to each state to be detected, the corresponding detection camera 13 is controlled to acquire images. Specifically, when the dial moves to each target state, the control unit triggers one or more detection cameras 13 corresponding to that state to acquire images. The acquired multi-state images are sequentially arranged into an image sequence and sent to the image processing system.

[0079] The acquired multi-state image sequence is compared with the corresponding preset template sequence to determine whether the dial is qualified. The image processing system performs state-by-state comparison between the acquired image sequence and the preset template image sequence (using template matching, feature comparison, or deep learning discrimination methods) to comprehensively determine whether the dial meets the quality requirements in each state. If the comparison result of any state exceeds the tolerance range, the dial is determined to be unqualified.

[0080] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A testing device for dial assembly, characterized in that, The device includes a detection component (10) and a conveying component (20). The conveying component (20) has two clamping mechanisms arranged at intervals along a first direction on both sides. Each clamping mechanism includes a rotary component (30). Each rotary component (30) is provided with multiple rotating components (40) arranged at intervals. Each rotating component (40) is connected to a corresponding clamping component (50). The rotary component (30) is used to drive the rotating component (40) to perform linear motion when it is in the detection position, so as to sequentially transfer the dial to multiple detection stations arranged along a second direction. The conveying component (20) is used to drive the assembled dial to move along the second direction. The rotating component (30) is used to drive the rotating component (40) to rotate. The two adjacent clamping components (50) on both sides of the conveying component (20) are used to clamp the dial synchronously. The rotating component (40) is used to drive the clamping component (50) connected to it to rotate around the first direction and realize the switching of the dial state during the transfer of the dial so that the detection component (10) can perform visual detection on the dial in different states. The detection component (10) includes four detection brackets (12) arranged at intervals along the second direction. Each detection bracket (12) is fastened with a detection camera (13) arranged along the third direction. The detection camera (13) is used to perform visual inspection on the dial held by the two clamping components (50) to sequentially obtain dial images in the front state, the first side state, the back state, and the second side state. The first direction, the second direction, and the third direction are perpendicular to each other.

2. The testing device for dial assembly according to claim 1, characterized in that, The clamping assembly (50) includes a telescopic member (51), one end of which is fitted with a clamping block (52), and a clamping pad (53) is fixedly connected to the clamping block (52).

3. The testing device for dial assembly according to claim 2, characterized in that, Each of the rotating components (40) includes a rotating frame (41) mounted on the rotating component (30), the telescopic member (51) being rotatably connected to the rotating frame (41), and a first rotating gear (42) being sleeved at one end of the telescopic member (51) away from the clamping block (52). The rotating frame (41) is equipped with a rotating motor (43), and the output shaft of the rotating motor (43) is equipped with a second rotating gear (44) that meshes with the first rotating gear (42).

4. The testing device for dial assembly according to claim 3, characterized in that, Both the first rotating gear (42) and the second rotating gear (44) are spur gears, and the diameter of the first rotating gear (42) is larger than the diameter of the second rotating gear (44).

5. The testing device for dial assembly according to any one of claims 1 to 4, characterized in that, The detection assembly (10) further includes a detection base frame (11), which includes a first frame (111) and a second frame (112) located at both ends of the conveying assembly (20) along a first direction. A third frame (113) with a square frame structure is connected between the first frame (111) and the second frame (112), and a plurality of detection brackets (12) are fastened to the third frame (113).

6. The testing device for dial assembly according to claim 5, characterized in that, The detection bracket (12) includes a first detection frame (121), a second detection frame (122), a third detection frame (123), and a detection sleeve (124). The first detection frame (121) is fastened to the third frame (113), the second detection frame (122) is fastened to the end of the first detection frame (121) away from the conveying assembly (20), and the detection sleeve (124) is fixedly sleeved with the detection camera (13).

7. A method for inspecting dial assembly, applied to the inspection device for dial assembly as described in any one of claims 1 to 6, characterized in that, include: Step S1: The assembled dial is conveyed to the detection position along the second direction by the conveying component (20); Step S2: During the dial transport process, the clamping components (50) on both sides of the transport component (20) simultaneously clamp the dial and rotate around a third direction under the drive of their respective connected rotating components (40) to change the current state of the dial. Step S3: Move the dials in different states to the corresponding detection positions using the rotary component (30), and collect dial images in different postures using multiple detection components (10); Step S4: Compare the acquired dial image with the preset template to determine whether the assembled dial is qualified. In step S5, if yes, control the clamping component (50) to release the dial and transfer it to the next station; if no, reject the unqualified dial.

8. The inspection method for dial assembly according to claim 7, characterized in that, The dial has four detection states: front state, first side state, back state, and second side state. The detection component (10) has four detection cameras (13), which are distributed at intervals along the second direction. Step S3 specifically includes: Step S31: The dial in the front position is moved to the first detection camera (13) by the rotating component (30), and the first detection camera (13) captures the image of the dial in the front position. In step S32, during the process of moving the dial in the front position to the second detection camera (13), the rotating component (40) drives the clamping component (50) to rotate, so that the dial switches to the first side position, and the second detection camera (13) acquires the image of the dial in the first side position. In step S33, during the process of moving the dial in the first side state to the third detection camera (13), the rotating component (40) drives the clamping component (50) to rotate, so that the dial switches to the reverse state, and the third detection camera (13) acquires the image of the dial in the reverse state. In step S34, during the process of moving the dial in the reverse state to the fourth detection camera (13), the rotating component (40) drives the clamping component (50) to rotate, so that the dial switches to the second side state, and the fourth detection camera (13) acquires the image of the dial in the second side state.

Images