An automobile part micro-defect visual detection device based on edge cloud cooperation

Abstract

The utility model belongs to a kind of based on edge cloud cooperation's automobile parts microdefect visual inspection field, specifically based on edge cloud cooperation's automobile parts microdefect visual inspection device, comprising: mobile device and annular scanning device;The mobile device includes conveying line, the both sides of conveying line are equipped with first mobile station, the top of first mobile station is equipped with recess, screw rod is rotatably equipped in the recess of first mobile station, first mobile block is slidably equipped in the recess of first mobile station;Through the setting of first stepper motor, screw rod, first synchronous wheel, second synchronous wheel, synchronous belt, first mobile station and bridge, first stepper motor is started, so that first stepper motor rotation drives one of screw rod rotation, one of screw rod rotation drives another screw rod rotation by the transmission of first synchronous wheel, second synchronous wheel, synchronous belt, to make two screw rods rotation drive two first mobile stations and bridge move.

Description

Technical Field

[0001] This utility model belongs to the field of visual inspection of micro-defects in automotive parts based on edge-cloud collaboration, specifically a visual inspection device for micro-defects in automotive parts based on edge-cloud collaboration. Background Technology

[0002] The core principle of visual inspection technology is to simulate the human visual system, enabling machines to "see" the appearance of automotive parts and "determine" whether defects exist. In practice, a camera first captures multi-angle, high-resolution images of the automotive parts. This is analogous to how we observe objects with our eyes; the camera lens acts like our eyeball, capturing the appearance information of the parts. The captured images are then rapidly transmitted to a computer as digital signals via a transmission line.

[0003] Most existing visual inspection devices for micro-defects in automotive parts involve mounting camera modules on a robotic arm, then driving the robotic arm to move the camera modules for multi-angle imaging and inspection. Since the robotic arm can only move the camera modules and cannot move itself, one robotic arm cannot meet the inspection requirements, so multiple robotic arms need to be installed for inspection, which is very costly.

[0004] Therefore, we have made improvements to this by proposing a visual inspection device for micro-defects in automotive parts based on edge-cloud collaboration. Utility Model Content

[0005] To address the shortcomings of existing technologies and solve the problem that most current visual inspection devices for micro-defects in automotive parts involve mounting camera modules on robotic arms and then driving the robotic arms to move the camera modules for multi-angle imaging and inspection, the robotic arms can only move the camera modules and cannot move themselves. This results in one robotic arm not being able to meet the inspection requirements, necessitating the installation of multiple robotic arms for inspection, which is very costly.

[0006] The technical solution adopted by this utility model to solve its technical problem is: to provide a visual inspection device for micro-defects in automotive parts based on edge-cloud collaboration, including: a moving device and a ring scanning device; The moving device includes a conveyor line, with first moving platforms on both sides of the conveyor line. The top of the first moving platform has a groove, and a lead screw is rotatably mounted in the groove of the first moving platform. A first moving block is slidably mounted in the groove of the first moving platform. A through threaded hole is provided on one side of the first moving block, and the threaded hole is threadedly connected to the lead screw. A first stepper motor is driven on one side of one of the lead screws, a first synchronous pulley is driven on the side of one of the lead screws away from the first stepper motor, and a second synchronous pulley is driven on one side of the other lead screw. A synchronous belt is driven between the first synchronous pulley and the second synchronous pulley. The annular scanning device includes a bridge frame, which is a semi-circular structure. Both ends of the bridge frame are fixedly connected to two first moving blocks. The bridge frame has a sliding cavity inside, and a first moving plate is provided inside the sliding cavity. Two second pulleys are symmetrically rotated on both sides of the first moving plate, and the two second pulleys are in clearance fit with the sliding cavity. A second moving stage is provided at the bottom of the first moving plate. A winding wheel is rotatably provided on the top of the bridge frame through a rotating seat. A second stepper motor is driven on one side of the winding wheel. A cable is wound on the winding wheel, and both ends of the cable are fixedly connected to the second moving stage. A height and angle adjustment device is driven on one side of the second moving stage.

[0007] Furthermore, the fixed end of the first stepper motor is fixedly connected to one of the first moving platforms, the output shaft of the first stepper motor passes through the outer wall of the first moving platform and is connected to the lead screw drive, the first synchronous wheel and the second synchronous wheel pass through the outer wall of the first moving platform through the rotating shaft and are connected to the lead screw drive, the first moving platform has a first guide groove on both sides of the groove, the first moving block has a first guide protrusion fixed on both sides, and the first guide protrusion is slidably connected to the first guide groove.

[0008] During operation, the output shaft of the first stepper motor passes through the outer wall of the first moving table and is connected to the lead screw drive, allowing the rotation of the first stepper motor to drive the lead screw. The first and second synchronous pulleys are connected to the lead screw drive via shafts passing through the outer wall of the first moving table, allowing the rotation of the first lead screw to drive the rotation of the first synchronous pulley, and the rotation of the second synchronous pulley to drive the rotation of the second lead screw. A first guide protrusion is slidably connected to a first guide groove, allowing the first guide protrusion to slide within the first guide groove.

[0009] Furthermore, the fixed end of the second stepper motor is fixedly connected to the outer wall of the rotating seat of the winding wheel, the output shaft of the second stepper motor passes through the outer wall of the rotating seat of the winding wheel and is connected to the winding wheel for transmission, the rotating seat of the winding wheel is fixedly connected to the bridge frame, the top two sides of the sliding cavity are provided with third pulleys through the rotating seat, the top of the bridge frame is symmetrically provided with two through slots, and the first pulley is rotatably provided in the slots.

[0010] During operation, the output shaft of the second stepper motor passes through the outer wall of the rotating seat of the winding wheel and is connected to the winding wheel for transmission, so that the rotation of the second stepper motor can drive the winding wheel to rotate. A third pulley is rotatably mounted on both sides of the top of the sliding cavity via the rotating seat, allowing the third pulley to rotate within the sliding cavity. A first pulley is rotatably mounted within a slot, allowing the first pulley to rotate within the slot.

[0011] Furthermore, the cables pass through the third pulley and the first pulley respectively, the bottom of the cable tray is provided with a through sliding groove, the bottom of the first movable plate is fixedly provided with a connecting block, the connecting block is slidably connected with the sliding groove, and the bottom of the connecting block is fixedly provided with a second movable platform.

[0012] During operation, the connecting block is slidably connected to the sliding groove, allowing the connecting block to slide within the sliding groove.

[0013] Furthermore, the height and angle adjustment device includes a lifting platform, a groove on one side of the lifting platform, a second moving block slidably disposed in the groove of the lifting platform, the second moving block being fixedly connected to the second moving platform, a second lead screw rotatably disposed inside the groove of the lifting platform, a third stepper motor disposed on the top of the lifting platform, the fixed end of the third stepper motor being fixedly connected to the lifting platform, the output shaft of the third stepper motor passing through the outer wall of the lifting platform and being drivenly connected to the second lead screw, and second guide grooves disposed on both sides of the groove of the lifting platform.

[0014] During operation, a second movable block slides within the groove of the lifting platform, allowing it to slide within the groove. A second lead screw rotates within the groove of the lifting platform, allowing it to rotate within the groove. The output shaft of a third stepper motor passes through the outer wall of the lifting platform and is connected to the second lead screw, enabling the third stepper motor to drive the second lead screw to rotate.

[0015] Furthermore, a hinge seat is fixedly provided at the bottom of the lifting platform, a fixed platform is provided at the bottom of the hinge seat, and a hinge block is fixedly provided at the top of the fixed platform. The hinge block of the fixed platform is hinged to the hinge seat. A fourth stepper motor is provided on one side of the hinge seat. The fixed end of the fourth stepper motor is fixedly connected to the hinge seat. The output shaft of the fourth stepper motor passes through the outer wall of the hinge seat and is connected to the hinge block of the fixed platform. A camera is provided at the bottom center of the fixed platform, and several supplementary lights are provided around the camera.

[0016] During operation, the fixed platform is hinged to the hinge seat via a hinge block, allowing the fixed platform to swing at the bottom of the hinge seat. The output shaft of the fourth stepper motor passes through the outer wall of the hinge seat and is connected to the hinge block of the fixed platform, so that the rotation of the fourth stepper motor can drive the fixed platform to swing.

[0017] The specific beneficial effects are as follows: 1. The micro-defect visual inspection device for automotive parts based on edge-cloud collaboration described in this utility model, through the arrangement of a first stepper motor, a lead screw, a first synchronous pulley, a second synchronous pulley, a synchronous belt, a first moving stage, and a bridge, starts the first stepper motor, causing the first stepper motor to rotate and drive one of the lead screws to rotate. The rotation of one lead screw drives the other lead screw to rotate through the transmission of the first synchronous pulley, the second synchronous pulley, and the synchronous belt, thereby causing the two lead screws to rotate and drive the two first moving stages and the bridge to move.

[0018] 2. The edge-cloud collaborative visual inspection device for micro-defects in automotive parts described in this utility model, through the arrangement of a second stepper motor, cable, winding wheel, bridge, second moving stage and height and angle adjustment device, enables the second stepper motor to rotate and drive the second moving stage and height and angle adjustment device to move within the bridge through the cable. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a perspective view of the front side of this utility model; Figure 2 This is a partial three-dimensional sectional view of this utility model; Figure 3 This is a perspective view of the height and angle adjustment device of this utility model; Figure 4 This is a perspective view of the side and rear of this utility model; Figure 5 This is a bottom view of the fixing platform of this utility model.

[0021] In the diagram: 10. Moving device; 1001. Conveyor line; 1002. First moving table; 1003. First stepper motor; 1004. Lead screw; 1005. First guide groove; 1006. First moving block; 1007. First guide protrusion; 1008. Threaded hole; 1009. First synchronous pulley; 1010. Second synchronous pulley; 1011. Synchronous belt; 20. Circular scanning device; 2001. Bridge; 2002. Groove; 2003. Winding wheel; 2004. Second stepper motor; 2005. First pulley; 2006. 2007. Sliding cavity; 2008. First moving plate; 2009. Second pulley; 2010. Connecting block; 2011. Second moving stage; 2012. Third pulley; 2013. Cable; 210. Sliding groove; 210. Height and angle adjustment device; 2101. Lifting platform; 2102. Second lead screw; 2103. Second moving block; 2104. Second guide groove; 2105. Third stepper motor; 2106. Hinge seat; 2107. Fixed platform; 2108. Fourth stepper motor; 2109. Fill light; 2110. Camera. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] like Figures 1 to 5 As shown, this utility model provides a visual inspection device for micro-defects in automotive parts based on edge-cloud collaboration, including: a moving device 10 and a ring scanning device 20; The moving device 10 includes a conveyor line 1001, with first moving platforms 1002 on both sides of the conveyor line 1001. The top of the first moving platform 1002 is provided with a groove. A lead screw 1004 is rotatably provided in the groove of the first moving platform 1002. A first moving block 1006 is slidably provided in the groove of the first moving platform 1002. A through threaded hole 1008 is provided on one side of the first moving block 1006. The threaded hole 1008 is threadedly connected to the lead screw 1004. A first stepper motor 1003 is driven on one side of one lead screw 1004. A first synchronous pulley 1009 is driven on the side of one lead screw 1004 away from the first stepper motor 1003. A second synchronous pulley 1010 is driven on one side of the other lead screw 1004. A synchronous belt 1011 is driven between the first synchronous pulley 1009 and the second synchronous pulley 1010. The ring scanning device 20 includes a bridge frame 2001, which is a semi-circular ring structure. Both ends of the bridge frame 2001 are fixedly connected to two first moving blocks 1006. The bridge frame 2001 has a sliding cavity 2006 inside, and a first moving plate 2007 is provided inside the sliding cavity 2006. Two second pulleys 2008 are symmetrically rotated on both sides of the first moving plate 2007. The two second pulleys 2008 are clearance-fitted with the sliding cavity 2006. A second moving stage 2010 is provided at the bottom of the first moving plate 2007. A winding wheel 2003 is rotatably provided on the top of the bridge frame 2001 through a rotating seat. A second stepper motor 2004 is driven on one side of the winding wheel 2003. A cable 2012 is wound on the winding wheel 2003. Both ends of the cable 2012 are fixedly connected to the second moving stage 2010. A height and angle adjustment device 210 is driven on one side of the second moving stage 2010.

[0024] In one specific embodiment of this utility model, the fixed end of the first stepper motor 1003 is fixedly connected to one of the first moving platforms 1002. The output shaft of the first stepper motor 1003 passes through the outer wall of the first moving platform 1002 and is connected to the lead screw 1004 for transmission. The first synchronous wheel 1009 and the second synchronous wheel 1010 pass through the outer wall of the first moving platform 1002 and are connected to the lead screw 1004 for transmission through a rotating shaft. The first moving platform 1002 has a first guide groove 1005 on both sides of the groove. The first moving block 1006 has a first guide protrusion 1007 fixedly provided on both sides. The first guide protrusion 1007 is slidably connected to the first guide groove 1005.

[0025] During operation, the output shaft of the first stepper motor 1003 passes through the outer wall of the first moving table 1002 and is connected to the lead screw 1004, so that the rotation of the first stepper motor 1003 drives the lead screw 1004 to rotate. The first synchronous pulley 1009 and the second synchronous pulley 1010 are connected to the lead screw 1004 via a rotating shaft passing through the outer wall of the first moving table 1002, so that the rotation of the first lead screw 1004 drives the rotation of the first synchronous pulley 1009, and the rotation of the second synchronous pulley 1010 drives the rotation of the second lead screw 2102. The first guide protrusion 1007 is slidably connected to the first guide groove 1005, allowing the first guide protrusion 1007 to slide within the first guide groove 1005.

[0026] In one specific embodiment of this utility model, the fixed end of the second stepper motor 2004 is fixedly connected to the outer wall of the rotating seat of the winding wheel 2003. The output shaft of the second stepper motor 2004 passes through the outer wall of the rotating seat of the winding wheel 2003 and is connected to the winding wheel 2003 for transmission. The rotating seat of the winding wheel 2003 is fixedly connected to the bridge frame 2001. The top two sides of the sliding cavity 2006 are provided with third pulleys 2011 through the rotating seat. The top of the bridge frame 2001 is symmetrically provided with two through slots 2002. The first pulley 2005 is rotatably provided in the slots 2002.

[0027] During operation, the output shaft of the second stepper motor 2004 passes through the outer wall of the rotating seat of the winding wheel 2003 and is connected to the winding wheel 2003 for transmission, so that the rotation of the second stepper motor 2004 can drive the winding wheel 2003 to rotate. A third pulley 2011 is rotatably mounted on both sides of the top of the sliding cavity 2006 via the rotating seat, allowing the third pulley 2011 to rotate within the sliding cavity 2006. A first pulley 2005 is rotatably mounted within the slot 2002, allowing the first pulley 2005 to rotate within the slot 2002.

[0028] In one specific embodiment of this utility model, the cable 2012 passes through the third pulley 2011 and the first pulley 2005 respectively. The bottom of the cable tray 2001 is provided with a through sliding groove 2013. The bottom of the first moving plate 2007 is fixedly provided with a connecting block 2009. The connecting block 2009 is slidably connected with the sliding groove 2013. The bottom of the connecting block 2009 is fixedly provided with a second moving platform 2010.

[0029] During operation, the connecting block 2009 is slidably connected to the sliding groove 2013, allowing the connecting block 2009 to slide within the sliding groove 2013.

[0030] As a specific embodiment of this utility model, the height and angle adjustment device 210 includes a lifting platform 2101. A groove is provided on one side of the lifting platform 2101. A second moving block 2103 is slidably provided in the groove of the lifting platform 2101. The second moving block 2103 is fixedly connected to the second moving platform 2010. A second lead screw 2102 is rotatably provided inside the groove of the lifting platform 2101. A third stepper motor 2105 is provided on the top of the lifting platform 2101. The fixed end of the third stepper motor 2105 is fixedly connected to the lifting platform 2101. The output shaft of the third stepper motor 2105 passes through the outer wall of the lifting platform 2101 and is connected to the second lead screw 2102 for transmission. Second guide grooves 2104 are provided on both sides of the groove of the lifting platform 2101.

[0031] During operation, a second movable block 2103 slides within the groove of the lifting platform 2101, allowing it to slide within the groove. A second lead screw 2102 rotatably rotates within the groove of the lifting platform 2101. The output shaft of a third stepper motor 2105 passes through the outer wall of the lifting platform 2101 and is connected to the second lead screw 2102, enabling the third stepper motor 2105 to rotate and drive the second lead screw 2102 to rotate.

[0032] In one specific embodiment of this utility model, a hinge seat 2106 is fixedly provided at the bottom of the lifting platform 2101, a fixed platform 2107 is provided at the bottom of the hinge seat 2106, a hinge block is fixedly provided at the top of the fixed platform 2107, the hinge block of the fixed platform 2107 is hinged to the hinge seat 2106, a fourth stepper motor 2108 is provided on one side of the hinge seat 2106, the fixed end of the fourth stepper motor 2108 is fixedly connected to the hinge seat 2106, the output shaft of the fourth stepper motor 2108 passes through the outer wall of the hinge seat 2106 and is connected to the hinge block of the fixed platform 2107 for transmission, a camera 2110 is provided at the bottom center of the fixed platform 2107, and several supplementary lights 2109 are provided around the camera 2110.

[0033] During operation, the fixed platform 2107 is hinged to the hinge seat 2106 via the hinge block, allowing the fixed platform 2107 to swing at the bottom of the hinge seat 2106. The output shaft of the fourth stepper motor 2108 passes through the outer wall of the hinge seat 2106 and is connected to the hinge block of the fixed platform 2107 for transmission, so that the rotation of the fourth stepper motor 2108 can drive the fixed platform 2107 to swing.

[0034] The specific workflow is as follows: First, the conveyor line 1001 is started, transporting the automotive parts to be inspected to the bottom of the bridge 2001. Then, the first stepper motor 1003 is started. The rotation of the first stepper motor 1003 drives one of the lead screws 1004 to rotate. The rotation of the lead screw 1004 drives the first synchronous pulley 1009 to rotate. The rotation of the first synchronous pulley 1009 drives the second synchronous pulley 1010 to rotate via the synchronous belt 1011. The second synchronous pulley 1010 drives the other lead screw 1004 to rotate. The rotation of the two lead screws 1004 drives the two first moving blocks 1006 to move. The two first moving blocks 1006 drive the bridge 2001 to move. The movement of the bridge 2001 drives the camera 2110 to move, so that the camera 2110 is moved to the position to be inspected for defect detection. Then, the second stepper motor 2004 is started. The second stepper motor 2004 drives the cable 2012 to rotate, so that the cable 2012 drives the second moving stage 2010 in the sliding cavity. The camera 2110 moves within the 2006, allowing it to perform circular shooting around the automotive parts. The third stepper motor 2105 is activated, rotating the second lead screw 2102, which in turn moves the second moving block 2103. Since the second moving block 2103 is fixedly connected to the second moving stage 2010, it remains stationary relative to the stage, while the lifting platform 2101 moves relative to it. This movement of the lifting platform 2101 controls the shooting height of the camera 2110. The fourth stepper motor 2108 is then activated, rotating the fixed platform 2107. This rotation adjusts the shooting angle of the camera 2110, enabling multi-angle, multi-position inspection of automotive parts to be completed with only one camera 2110, significantly reducing inspection costs.

[0035] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0036] In the description of this utility model, it should be understood that the terms "middle", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation 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 limiting the scope of protection of this utility model.

[0037] The foregoing has shown and described the basic structure, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A visual inspection device for micro-defects in automotive parts based on edge-cloud collaboration, characterized in that, include: Moving device (10) and circular scanning device (20); The moving device (10) includes a conveyor line (1001), with a first moving platform (1002) on both sides of the conveyor line (1001). The top of the first moving platform (1002) is provided with a groove, and a lead screw (1004) is rotatably provided in the groove of the first moving platform (1002). A first moving block (1006) is slidably provided in the groove of the first moving platform (1002). A through threaded hole (1008) is provided on one side of the first moving block (1006), and the threaded hole (1008) is threadedly connected to the lead screw (1004). A first stepper motor (1003) is driven on one side of one of the lead screws (1004), and a first synchronous pulley (1009) is driven on the side of one of the lead screws (1004) away from the first stepper motor (1003). A second synchronous pulley (1010) is driven on the side of the other lead screw (1004), and a synchronous belt (1011) is driven between the first synchronous pulley (1009) and the second synchronous pulley (1010). The annular scanning device (20) includes a bridge (2001), which is a semi-circular structure. Both ends of the bridge (2001) are fixedly connected to two first moving blocks (1006). The bridge (2001) has a sliding cavity (2006) inside, and a first moving plate (2007) is provided inside the sliding cavity (2006). Two second pulleys (2008) are symmetrically rotated on both sides of the first moving plate (2007). The two second pulleys (2008) are positioned between the sliding cavity (2006) and the second moving plate (2008). The first movable plate (2007) is equipped with a second movable platform (2010) at its bottom. The top of the bridge frame (2001) is equipped with a winding wheel (2003) that rotates through a rotating seat. A second stepper motor (2004) is driven on one side of the winding wheel (2003). A cable (2012) is wound on the winding wheel (2003). Both ends of the cable (2012) are fixedly connected to the second movable platform (2010). A height and angle adjustment device (210) is driven on one side of the second movable platform (2010).

2. The visual inspection device for micro-defects in automotive parts based on edge-cloud collaboration according to claim 1, characterized in that: The fixed end of the first stepper motor (1003) is fixedly connected to one of the first moving platforms (1002). The output shaft of the first stepper motor (1003) passes through the outer wall of the first moving platform (1002) and is connected to the lead screw (1004) for transmission. The first synchronous pulley (1009) and the second synchronous pulley (1010) pass through the outer wall of the first moving platform (1002) through the rotating shaft and are connected to the lead screw (1004) for transmission. The first moving platform (1002) has a first guide groove (1005) on both sides of the groove. The first moving block (1006) has a first guide protrusion (1007) fixedly provided on both sides. The first guide protrusion (1007) is slidably connected to the first guide groove (1005).

3. The visual inspection device for micro-defects in automotive parts based on edge-cloud collaboration according to claim 2, characterized in that: The fixed end of the second stepper motor (2004) is fixedly connected to the outer wall of the rotating seat of the winding wheel (2003). The output shaft of the second stepper motor (2004) passes through the outer wall of the rotating seat of the winding wheel (2003) and is connected to the winding wheel (2003) for transmission. The rotating seat of the winding wheel (2003) is fixedly connected to the bridge frame (2001). The top two sides of the sliding cavity (2006) are provided with a third pulley (2011) through the rotating seat. The top of the bridge frame (2001) is symmetrically provided with two through slots (2002). The first pulley (2005) is rotatably provided in the slots (2002).

4. The visual inspection device for micro-defects in automotive parts based on edge-cloud collaboration according to claim 3, characterized in that: The cable (2012) passes through the third pulley (2011) and the first pulley (2005) respectively. The bottom of the cable tray (2001) is provided with a through sliding groove (2013). The bottom of the first moving plate (2007) is fixedly provided with a connecting block (2009). The connecting block (2009) is slidably connected with the sliding groove (2013). The bottom of the connecting block (2009) is fixedly provided with a second moving platform (2010).

5. The visual inspection device for micro-defects in automotive parts based on edge-cloud collaboration according to claim 4, characterized in that: The height and angle adjustment device (210) includes a lifting platform (2101). A groove is provided on one side of the lifting platform (2101). A second moving block (2103) is slidably provided in the groove of the lifting platform (2101). The second moving block (2103) is fixedly connected to the second moving platform (2010). A second lead screw (2102) is rotatably provided inside the groove of the lifting platform (2101). A third stepper motor (2105) is provided on the top of the lifting platform (2101). The fixed end of the third stepper motor (2105) is fixedly connected to the lifting platform (2101). The output shaft of the third stepper motor (2105) passes through the outer wall of the lifting platform (2101) and is connected to the second lead screw (2102) for transmission. A second guide groove (2104) is provided on both sides of the groove of the lifting platform (2101).

6. The visual inspection device for micro-defects in automotive parts based on edge-cloud collaboration according to claim 5, characterized in that: The bottom of the lifting platform (2101) is fixedly provided with a hinge seat (2106), the bottom of the hinge seat (2106) is provided with a fixed platform (2107), the top of the fixed platform (2107) is fixedly provided with a hinge block, the hinge block of the fixed platform (2107) is hinged to the hinge seat (2106), a fourth stepper motor (2108) is provided on one side of the hinge seat (2106), the fixed end of the fourth stepper motor (2108) is fixedly connected to the hinge seat (2106), the output shaft of the fourth stepper motor (2108) passes through the outer wall of the hinge seat (2106) and is connected to the hinge block of the fixed platform (2107) for transmission. A camera (2110) is provided at the bottom center of the fixed platform (2107), and several supplementary lights (2109) are provided around the camera (2110).

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