Multi-view visual inspection machine

Abstract

The invention discloses a multi-view visual inspection machine, which is characterized in that (1) a single lens is used for high-efficiency coverage: a product inspection platform (rotating around a vertical center line and moving left and right), a visual inspection camera (swinging left and right around a horizontal center line extending front and back and moving front and back) and a camera (moving up and down) are cooperated in multi-dimensional movement; 360-degree omnibearing shooting can be realized only by a single lens (namely the lens of the camera), and compared with the traditional multi-camera layout, the hardware cost is greatly reduced, the equipment volume is reduced, and the space utilization rate is improved. And (2) the detection adaptability is stronger: the lens (namely the lens of the camera) can rotate by 90 degrees and move up and down / back and forth, the product detection platform can rotate by 360 degrees and move left and right, the detection requirements of irregular-shaped parts such as springs and hardware can be flexibly met, and details of each part can be accurately captured no matter whether the parts are symmetrical or not and have complex curved surfaces or not. And (3) the detection efficiency is improved: a single lens does not need to switch positions.

Description

Technical Field

[0001] This invention relates to the field of visual inspection machine technology, and in particular to a multi-view visual inspection machine. Background Technology

[0002] Traditional multi-view vision inspection machines mainly rely on a multi-camera layout to achieve multi-view vision inspection of products. However, these traditional vision inspections have limitations in terms of angle coverage, inspection accuracy, and efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a multi-view vision inspection machine to solve the technical problems of limitations in angle coverage, detection accuracy and efficiency of traditional vision inspection.

[0004] To achieve the above objectives, the present invention provides a multi-view visual inspection machine, including a drive transmission structure assembly. The drive transmission structure assembly includes a protective housing and an X-axis linear transmission module and a Y-axis linear transmission module disposed inside the protective housing. The top surface of the protective housing has an X-axis linear opening and a Y-axis linear opening. A rotating mechanism platform is provided on the X-axis linear transmission module. The rotating mechanism platform is connected to the bottom end of a rotating platform adapter seat. The rotating platform adapter seat extends upward through the X-axis linear opening. A product inspection platform is provided at the top of the rotating platform adapter seat. The product inspection platform can move left and right and rotate around a vertical center line. A reducer support plate extends upward through the Y-axis linear opening on the Y-axis linear transmission module. A reducer is provided at the top of the reducer support plate. The reducer is connected to a visual inspection camera. The visual inspection camera can move back and forth and swing left and right around a horizontal center line extending forward and backward. The visual inspection camera includes a Z-axis linear transmission module and a camera disposed on the Z-axis linear transmission module. The camera can move up and down.

[0005] Furthermore, the X-axis linear drive module is located in front of the Y-axis linear drive module, and the X-axis linear opening is located in front of the Y-axis linear opening; the reducer is a cylindrical body extending axially back and forth, the rear end of the reducer is the input end and connected to the first servo motor, and the front end of the reducer is the output end; the visual inspection camera includes a Z-axis linear drive module support plate, the length direction of the Z-axis linear drive module support plate is perpendicular to the axial direction of the reducer, one end of the Z-axis linear drive module support plate is connected to the output end of the reducer, and the Z-axis linear drive module is disposed on the front side of the other end of the Z-axis linear drive module support plate.

[0006] Furthermore, the Z-axis linear transmission module is a linear transmission module assembly distributed along the length direction of the Z-axis linear transmission module support plate; a Z-axis slide plate, the camera, and a camera protective box are sequentially arranged in front of the Z-axis linear transmission module. The Z-axis slide plate is mounted on the Z-axis linear transmission module, and the camera and the camera protective box are mounted on the Z-axis slide plate. The axial direction of the camera is parallel to the length direction of the Z-axis linear transmission module support plate, and the lens of the camera faces one end of the Z-axis linear transmission module support plate. The camera protective box can protect the camera.

[0007] Furthermore, the camera is fixed on the Z-axis slide plate by a front camera bracket and a rear camera bracket, and the other end of the Z-axis linear transmission module bracket plate is covered with a Z-axis linear module protective box; a backlight plate is provided between the camera protective box and the Z-axis slide plate, and the backlight plate is fixed on the Z-axis slide plate by a backlight plate bracket, and the backlight plate can provide light for the camera.

[0008] Furthermore, the Z-axis slide plate is mounted on the Z-axis linear transmission module via the Z-axis adapter plate, and one end of the Z-axis linear transmission module support plate is connected to the output end of the reducer via a reducer adapter block; the rotating mechanism platform is connected to the X-axis linear transmission module via an X-axis adapter plate, and the reducer support plate is connected to the Y-axis linear transmission module via a Y-axis adapter plate.

[0009] Furthermore, a rotating shaft support plate is provided below the reducer, and the rotating shaft support plate and the reducer support plate are used to fix the reducer; a rotating shaft protective box is provided behind the reducer support plate, and the rotating shaft protective box covers the reducer.

[0010] Furthermore, the X-axis linear transmission module is a linear transmission module assembly distributed along the X-axis direction, and the Y-axis linear transmission module is a linear transmission module assembly distributed along the Y-axis direction; the linear transmission module assembly includes a linear module base plate, on which two parallel guide rails are provided, and a fixed end and a support end are respectively fixedly provided at both ends of the linear module base plate, the fixed end and the support end are respectively rotatably connected to both ends of a lead screw, the middle part of the lead screw is threadedly connected to a lead screw nut seat, the lead screw nut seat is slidably engaged with the two guide rails, and one end of the lead screw is driven and connected to a second servo motor.

[0011] Furthermore, a servo motor mounting plate and a second servo motor are sequentially provided on the outer side of the fixed end. The second servo motor is mounted on the servo motor mounting plate. A fixed end bearing for one end of the lead screw to pass through is provided on the fixed end. The second servo motor is connected to one end of the lead screw through a coupling. A support end bearing for the other end of the lead screw to pass through is provided on the support end.

[0012] Furthermore, the top of the rotating platform adapter is connected to the platform mounting plate; the four corners of the platform mounting plate are respectively provided with L-shaped limiting blocks, and the product testing platform is fixedly installed on the platform mounting plate. The product testing platform is an acrylic platform.

[0013] Furthermore, the bottom of the protective enclosure is provided with a protective enclosure base plate, the rear end of the protective enclosure is provided with a cooling fan and two protective covers, the X-axis linear opening and the Y-axis linear opening are respectively provided with accordion protective blades, and the interior of the protective enclosure is provided with PLC electronic components; the protective enclosure is mounted on the enclosure base, and the interior of the enclosure base is equipped with a servo motor driver and circuit components.

[0014] In summary, the technical solution of the present invention has the following beneficial effects: The structural design of the present invention is reasonable. (1) By setting up a drive transmission structure component, the drive transmission structure component includes a protective housing and an X-axis linear transmission module and a Y-axis linear transmission module set inside the protective housing. The top surface of the protective housing is provided with an X-axis linear opening and a Y-axis linear opening. Thus, the X-axis linear transmission module can cooperate with the X-axis linear opening, and the Y-axis linear transmission module can cooperate with the Y-axis linear opening. (2) By setting up a rotating mechanism platform on the X-axis linear transmission module, the rotating mechanism platform is connected to the bottom end of the rotating platform adapter seat. The rotating platform adapter seat passes upward through the X-axis linear opening, and the top end of the rotating platform adapter seat is provided with a product detection platform. The product detection platform can move left and right and rotate around the vertical center line. Thus, the X-axis linear transmission module can sequentially drive the rotating mechanism platform, the rotating platform adapter seat, and the product detection platform to move left and right, while the rotating mechanism platform can sequentially drive the rotating platform adapter seat and the product detection platform to rotate around the vertical center line. (3) By setting a reducer support plate on the Y-axis linear transmission module that passes through the Y-axis linear opening upwards, and a reducer at the top of the reducer support plate, the reducer is connected to the vision inspection camera. The vision inspection camera can move back and forth and swing left and right around the horizontal center line extending back and forth. Thus, the Y-axis linear transmission module can sequentially drive the reducer support plate, the reducer, and the vision inspection camera to move back and forth, while the reducer drives the vision inspection camera to swing left and right around the horizontal center line extending back and forth. (4) By setting the vision inspection camera including the Z-axis linear transmission module and the camera set on the Z-axis linear transmission module, the camera can move up and down. Thus, the Z-axis linear transmission module can drive the camera to move up and down. As can be seen from the above analysis, in actual use, the present invention can achieve: (1) High-efficiency coverage with a single lens: Through the multi-dimensional motion coordination of the product inspection platform (rotating around the vertical center line + moving left and right) and the visual inspection camera (swinging left and right around the horizontal center line extending forward and backward + moving forward and backward) and the camera (moving up and down), only a single lens (i.e. the lens of the camera) is needed to achieve 360-degree all-round shooting. Compared with the traditional multi-camera layout, the hardware cost is greatly reduced, the equipment volume is reduced, and the space utilization rate is improved. (2) Stronger detection adaptability: The lens (i.e. the lens of the camera) can rotate left and right 0-90 degrees and move up and down / forward and backward. The product inspection platform rotates 360 degrees and moves left and right, flexibly adapting to the detection needs of irregularly shaped parts such as springs and hardware. Regardless of whether the parts are symmetrical or have complex curved surfaces, every detail can be accurately captured. (3) Improved detection efficiency: The single lens does not need to switch camera positions. All-round shooting can be completed by adjusting the movement, reducing the image acquisition time. Attached Figure Description

[0015] 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 chassis base of the present invention; Figure 3 This is a three-dimensional structural schematic diagram of the drive transmission structure component of the present invention; Figure 4 This is a three-dimensional structural diagram of the visual inspection camera of the present invention; Figure 5 This is a three-dimensional structural schematic diagram of another drive transmission structure component of the present invention; Figure 6 This is an exploded structural diagram of the drive transmission structure component of the present invention; Figure 7 This is another three-dimensional structural diagram of the visual inspection camera of the present invention; Figure 8 This is an exploded view of the visual inspection camera of the present invention; Figure 9 This is a three-dimensional structural schematic diagram of the linear transmission module assembly of the present invention; Figure 10 This is an exploded structural diagram of the linear drive module assembly of the present invention; Explanation of reference numerals in the attached drawings: chassis base (10), vision inspection camera (20), drive transmission structure assembly (30), linear transmission module assembly (40). Camera protective box (201), Z-axis linear module protective box (202), camera (203), front bracket of camera (204), Z-axis slide plate (205), rear bracket of camera (206), backlight panel (207), backlight panel bracket (208), Z-axis linear transmission module bracket plate (209), Z-axis adapter plate (210), Z-axis linear transmission module (211). Protective enclosure (301), protective enclosure base plate (302), bellows protective blade (303), product testing platform (304), platform mounting plate (305), X-axis adapter plate (306), PLC electronic components (307), rotating platform adapter seat (308), rotating shaft protective box (309), rotating shaft support plate (310), reducer adapter block (311), reducer (312), first servo motor (313), cooling fan (314), protective cover plate (315), Y-axis adapter plate (316), rotating mechanism platform (317), reducer support plate (318), X-axis linear drive module (319), Y-axis linear drive module (320), X-axis linear opening (321), Y-axis linear opening (322). Second servo motor (401), servo motor mounting plate (402), coupling (403), fixed end (404), fixed end bearing (405), linear module base plate (406), guide rail (407), support end bearing (408), support end (409), lead screw (410), lead screw nut seat (411). Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention, but this does not constitute a limitation on the scope of protection of the present invention.

[0017] In this invention, for clarity, the following description is provided: The observer faces the attached... Figure 1 In this observation, the observer's left front side is designated as rear, the observer's right rear side as front, the observer's right front side as left, the observer's left rear side as right, the observer's top as upper, and the observer's bottom as lower. It should be noted that the terms "front end," "rear end," "left side," "right side," "middle," "upper," and "lower" used in this document indicate orientations or positional relationships based on the accompanying drawings. These are merely for the purpose of clearly describing the invention and do not indicate or imply that the structure or component referred to must have a specific orientation or be constructed in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," "third," and "fourth" are used only for the purpose of clarity or simplification of description and should not be construed as indicating or implying relative importance or quantity.

[0018] See Figures 1 to 10This embodiment provides a multi-view vision inspection machine, including a drive transmission structure assembly 30. The drive transmission structure assembly 30 includes a protective housing 301 and an X-axis linear transmission module 319 and a Y-axis linear transmission module 320 disposed inside the protective housing 301. The top surface of the protective housing 301 has an X-axis linear opening 321 and a Y-axis linear opening 322. A rotating mechanism platform 317 is provided on the X-axis linear transmission module 319. The rotating mechanism platform 317 is connected to the bottom end of a rotating platform adapter 308. The rotating platform adapter 308 passes upward through the X-axis linear opening 321, and the top end of the rotating platform adapter 308... A product testing platform 304 is provided, which can move left and right and rotate around the vertical center line; a reducer support plate 318 is provided on the Y-axis linear transmission module 320, which passes through the Y-axis linear opening 322 upward. A reducer 312 is provided at the top of the reducer support plate 318. The reducer 312 is connected to the vision inspection camera 20. The vision inspection camera 20 can move back and forth and swing left and right around the horizontal center line extending back and forth; the vision inspection camera 20 includes a Z-axis linear transmission module 211 and a camera 203 set on the Z-axis linear transmission module 211. The camera 203 can move up and down. Function: (1) By setting up a drive transmission structure component, the drive transmission structure component includes a protective housing and an X-axis linear transmission module and a Y-axis linear transmission module set inside the protective housing. The top surface of the protective housing is provided with an X-axis linear opening and a Y-axis linear opening; thus, the X-axis linear transmission module can cooperate with the X-axis linear opening and the Y-axis linear transmission module can cooperate with the Y-axis linear opening. (2) By setting a rotating mechanism platform on the X-axis linear transmission module, the rotating mechanism platform is connected to the bottom end of the rotating platform adapter seat. The rotating platform adapter seat passes upward through the X-axis linear opening. The top of the rotating platform adapter seat is equipped with a product inspection platform. The product inspection platform can move left and right and rotate around the vertical center line. Thus, the X-axis linear transmission module can sequentially drive the rotating mechanism platform, the rotating platform adapter seat, and the product inspection platform to move left and right. The rotating mechanism platform can sequentially drive the rotating platform adapter seat and the product inspection platform to rotate around the vertical center line. (3) By setting a reducer support plate on the Y-axis linear transmission module that passes upward through the Y-axis linear opening, the reducer support plate is equipped with a reducer. The reducer is connected to the vision inspection camera. The vision inspection camera can move back and forth and swing left and right around the horizontal center line extending forward and backward. Thus, the Y-axis linear transmission module can sequentially drive the reducer support plate, the reducer, and the vision inspection camera to move back and forth. The reducer drives the vision inspection camera to swing left and right around the horizontal center line extending forward and backward. (4) By setting up a visual inspection camera including a Z-axis linear transmission module and a camera set on the Z-axis linear transmission module, the camera can move up and down; thus, the Z-axis linear transmission module can drive the camera to move up and down.As can be seen from the above analysis, in actual use, the present invention can achieve: (1) High-efficiency coverage with a single lens: Through the multi-dimensional motion coordination of the product inspection platform (rotating around the vertical center line + moving left and right) and the visual inspection camera (swinging left and right around the horizontal center line extending forward and backward + moving forward and backward) and the camera (moving up and down), only a single lens (i.e. the lens of the camera) is needed to achieve 360-degree all-round shooting. Compared with the traditional multi-camera layout, the hardware cost is greatly reduced, the equipment volume is reduced, and the space utilization rate is improved. (2) Stronger detection adaptability: The lens (i.e. the lens of the camera) can rotate left and right 0-90 degrees and move up and down / forward and backward. The product inspection platform rotates 360 degrees and moves left and right, flexibly adapting to the detection needs of irregularly shaped parts such as springs and hardware. Regardless of whether the parts are symmetrical or have complex curved surfaces, every detail can be accurately captured. (3) Improved detection efficiency: The single lens does not need to switch camera positions. All-round shooting can be completed by adjusting the movement, reducing the image acquisition time (if combined with a fast analysis algorithm, a large number of part sizes can be detected in a short time, adapting to the needs of mass production). Therefore, multi-view visual inspection machines can quickly measure products, performing multi-view, blind-spot-free visual inspection. They can measure from multiple angles, replacing some projectors and measuring tools. The product is placed on the product inspection platform for measurement, which rotates 0-360 degrees, and the lens rotates 0-90 degrees. A single product positioning and placement allows for all-around dimensional measurement, thereby reducing measurement errors caused by multiple clamping operations.

[0019] Specifically, the X-axis linear drive module 319 is located in front of the Y-axis linear drive module 320, and the X-axis linear opening 321 is located in front of the Y-axis linear opening 322; the reducer 312 is a cylindrical body extending axially back and forth, with the rear end of the reducer 312 being the input end and connected to the first servo motor 313, and the front end of the reducer 312 being the output end; the visual inspection camera 20 includes a Z-axis linear drive module support plate 209, the length direction of the Z-axis linear drive module support plate 209 being perpendicular to the axial direction of the reducer 312, one end of the Z-axis linear drive module support plate 209 being connected to the output end of the reducer 312, and the Z-axis linear drive module 211 being disposed on the front side of the other end of the Z-axis linear drive module support plate 209. Function: The first servo motor 313 provides rotational power, which drives the Z-axis linear transmission module support plate 209 and the Z-axis linear transmission module 211 to rotate in sequence through the reducer 312, thereby driving the camera to rotate 180 degrees. At the same time, the Z-axis linear transmission module 211 can drive the camera to move back and forth along the length direction of the Z-axis linear transmission module support plate 209 (such as moving up and down).

[0020] Specifically, the Z-axis linear drive module 211 is a linear drive module assembly 40 distributed along the length direction of the Z-axis linear drive module support plate 209; in front of the Z-axis linear drive module 211, there are Z-axis slide plate 205, camera 203, and camera protective box 201 arranged in sequence. The Z-axis slide plate 205 is mounted on the Z-axis linear drive module 211, and the camera 203 and camera protective box 201 are mounted on the Z-axis slide plate 205. The axial direction of the camera 203 is parallel to the length direction of the Z-axis linear drive module support plate 209, and the lens of the camera 203 faces one end of the Z-axis linear drive module support plate 209. The camera protective box 201 can protect the camera 203. Function: The Z-axis linear drive module 211 is located on the front side of the other end of the Z-axis linear drive module support plate 209. The camera 203 is located on the front side of the Z-axis linear drive module 211, and the lens of the camera 203 faces one end of the Z-axis linear drive module support plate 209 (i.e., it can shoot from top to bottom). This makes it easier for the camera 203 to perform visual inspection of the products on the product inspection platform in cooperation with the Z-axis slide plate 205 and the camera protective box 201.

[0021] Specifically, camera 203 is fixed to Z-axis slide plate 205 via front camera bracket 204 and rear camera bracket 206. The other end of Z-axis linear drive module bracket plate 209 is covered by Z-axis linear module protective box 202. A backlight plate 207 is provided between camera protective box 201 and Z-axis slide plate 205. Backlight plate 207 is fixed to Z-axis slide plate 205 via backlight plate bracket 208, and provides illumination for camera 203. Function: The light source system can follow the lens movement and simultaneously possesses both lens light source and bottom backlight systems, suitable for various measurement scenarios.

[0022] Visual inspection camera assembly principle: The Z-axis linear transmission module 211 mainly drives the camera 203 to move up and down, and the backlight plate 207 is a light source device to provide light for the camera. The camera protective box 201 mainly protects the camera 203.

[0023] Specifically, the Z-axis slide plate 205 is mounted on the Z-axis linear drive module 211 via the Z-axis adapter plate 210. One end of the Z-axis linear drive module support plate 209 is connected to the output end of the reducer 312 via the reducer adapter block 311. The rotating mechanism platform 317 is connected to the X-axis linear drive module 319 via the X-axis adapter plate 306, and the reducer support plate 318 is connected to the Y-axis linear drive module 320 via the Y-axis adapter plate 316. Function: The multiple adapter plates, such as the Z-axis adapter plate 210, X-axis adapter plate 306, and Y-axis adapter plate 316, facilitate connection to the lead screw nut seat 411 on the linear drive module assembly 40. The reducer adapter block 311 facilitates connection to the output end of the reducer 312.

[0024] Specifically, a rotating shaft support plate 310 is provided below the reducer 312. The rotating shaft support plate 310 and the reducer support plate 318 are used to fix the reducer 312. A rotating shaft protective box 309 is provided behind the reducer support plate 318, which covers the reducer 312. Function: This arrangement can fix and protect the reducer 312.

[0025] Specifically, the X-axis linear drive module 319 is a linear drive module assembly 40 distributed along the X-axis direction, and the Y-axis linear drive module 320 is a linear drive module assembly 40 distributed along the Y-axis direction. The linear drive module assembly 40 includes a linear module base plate 406, on which two parallel guide rails 407 are provided. A fixed end 404 and a support end 409 are fixedly provided at both ends of the linear module base plate 406, respectively. The fixed end 404 and the support end 409 are rotatably connected to both ends of a lead screw 410. The middle part of the lead screw 410 is threadedly connected to a lead screw nut seat 411, which is slidably engaged with the two guide rails 407. One end of the lead screw 410 is driven and connected to a second servo motor 401. Function: Higher measurement accuracy: The motion system adopts high-precision servo control, which can be combined with intelligent image algorithms to achieve micron-level dimensional measurement accuracy. It can accurately identify minute dimensional deviations and minor appearance defects, meeting the quality control standards of precision manufacturing.

[0026] Specifically, a servo motor mounting plate 402 and a second servo motor 401 are sequentially arranged on the outer side of the fixed end 404. The second servo motor 401 is mounted on the servo motor mounting plate 402. A fixed end bearing 405 is provided on the fixed end 404 for one end of the lead screw 410 to pass through. The second servo motor 401 is connected to one end of the lead screw 410 through a coupling 403. A support end bearing 408 is provided on the support end 409 for the other end of the lead screw 410 to pass through. Function: The fixed end 404, fixed end bearing 405, support end bearing 408, and support end 409 mainly support the rotational movement of the lead screw 410.

[0027] Linear transmission module assembly principle: The second servo motor 401 provides power to rotate, and then connects to the lead screw 410 through the coupling 403, driving the lead screw 410 to rotate. The lead screw 410 and the lead screw nut seat 411 are connected by the lead screw transmission principle, allowing the lead screw nut seat 411 to make linear motion on the guide rail 407.

[0028] Specifically, the top of the rotating platform adapter 308 is connected to the platform mounting plate 305; L-shaped limit blocks are provided at the four corners of the platform mounting plate 305; the product testing platform 304 is fixedly mounted on the platform mounting plate 305, and the product testing platform 304 is an acrylic platform. Function: The L-shaped limit blocks can limit the movement of the product testing platform 304.

[0029] Specifically, the bottom of the protective enclosure 301 is provided with a protective enclosure base plate 302, the rear end of the protective enclosure 301 is provided with a cooling fan 314 and two protective covers 315, the X-axis linear opening 321 and the Y-axis linear opening 322 are respectively provided with bellows protective blades 303, and the interior of the protective enclosure 301 is provided with PLC electronic components 307; the protective enclosure 301 is set on the enclosure base 10, and the interior of the enclosure base 10 is equipped with servo motor drivers and circuit components. Function: The controller can record the measurement position and stroke, save the image position data, save the measured product data by computer for printing output, set the tolerance range of the inspected product, and distinguish between good and defective products. Therefore, it reduces costs: the automated inspection process reduces the workload of manual inspection, reducing labor costs; at the same time, due to the improved inspection accuracy, the generation of defective products is reduced, lowering the enterprise's production costs. 1. The enclosure base 10 mainly assembles some servo motor drivers and some circuit components. 2. The enclosure base 10 supports the drive transmission structure assembly 30 and the vision inspection camera 20.

[0030] Drive transmission structure component principle: The rotary shaft support plate 310 and the reducer support plate 318 are used to fix the reducer 312. The first servo motor 313 provides rotational power, which drives the reducer adapter plate 311 to rotate through the reducer 312. The Z-axis linear transmission module bracket plate 209 is fixed to the reducer adapter plate 311, thereby driving the camera to rotate 180 degrees. The rotary mechanism platform 317 is fixed to the X-axis adapter plate 306, the platform mounting plate 305 is fixed to the rotary mechanism platform 317, and the product inspection platform 304 is fixed to the platform mounting plate 305. Thus, the rotary mechanism platform 317 drives the acrylic platform.

[0031] Application scenarios: 1. Precision parts inspection: Focusing on the appearance and dimensional inspection of industrial parts such as springs, metal stampings, stamped parts, die castings, and injection molded parts.

[0032] (1) Spring inspection: By rotating the product inspection platform 360 degrees and adjusting the lens angle (i.e., the camera swings left and right), the number of spring coils, coil diameter uniformity, surface scratches and end flatness can be detected, and key dimensions such as free wire length, inner and outer diameters and angles can be accurately measured.

[0033] (2). Inspection of hardware / stamping parts: For the burrs and surface depressions of stamping parts, the position and diameter of holes of hardware parts, the lens (i.e. the lens of the camera) can be moved back and forth to focus on details, and the product inspection platform can be moved left and right to adapt to parts of different lengths to ensure comprehensive inspection.

[0034] (3) Inspection of die casting / injection molded parts: to inspect die castings for flash and shrinkage cavities, and injection molded parts for weld lines and dimensional deviations. The lens can be moved up and down to adapt to the height difference of the parts, and the lens can be rotated 0-90 degrees left and right to capture the vertical, side and inclined features.

[0035] 2. Industrial manufacturing sector: In parts manufacturing, comprehensive inspection of key components such as gears can be carried out to ensure that the dimensional accuracy and surface quality of the parts meet production standards, thereby improving product quality and safety; in product manufacturing, defect detection can be performed on the outer shell, etc., to ensure the quality of the product appearance and reduce the defect rate.

[0036] In summary, this multi-angle vision inspection machine patent aims to overcome the limitations of traditional vision inspection in terms of angle coverage, inspection accuracy, and efficiency. Through an innovative mechanical structure, it can be integrated with advanced vision algorithms, especially relying on single-lens multi-dimensional motion and platform-based collaborative control technology to achieve omnidirectional, high-precision, and rapid inspection of objects. This provides an efficient and reliable solution for measuring the external dimensions of complex parts in industrial production, and is particularly suitable for quality control of parts such as springs, hardware, stamping, die casting, injection molding, and industrial components.

[0037] Technological innovation points: 1. Rotating Camera (i.e., video camera) and Product Inspection Platform Layout: A unique rotating camera design allows for adjusting the camera's angle at different locations on the product being inspected, such as the top or side. The camera works in conjunction with the product inspection platform to simultaneously capture images of objects placed in the inspection area from multiple angles, ensuring no blind spots on the object's surface. For example, when inspecting complex-shaped parts, a 90-degree camera can clearly capture the top surface, while the rotating camera's angle measurement captures subtle features on the sides. Rotating the product allows for multi-faceted inspection, thus comprehensively acquiring information about the object.

[0038] 2. Single-lens multi-dimensional motion system: Breaking through the limitations of traditional multi-camera layout, an innovative design is used to create a collaborative system between a single-lens (i.e., camera) multi-degree-of-freedom motion structure and an intelligent support platform (i.e., product testing platform) to achieve "full coverage" testing with a single lens.

[0039] (1) Lens motion characteristics: The lens supports left and right rotation adjustment from 0 to 90 degrees, and can flexibly switch shooting angles; it also has the functions of up and down movement (adjusting vertical height) and forward and backward movement (adjusting shooting distance), which can be adapted to parts of different heights and sizes.

[0040] (2) Motion characteristics of the bearing platform: The product inspection platform can rotate 360 ​​degrees, driving the parts to rotate in all directions; with the left and right movement function of the platform, the horizontal position of the parts in the inspection area can be adjusted.

[0041] (3) Collaborative working mechanism: Through precise linkage between the lens and the platform, for example, when inspecting spring hardware parts, the product inspection platform rotates 360 degrees so that the sides of each coil of the spring face the lens in turn. The lens rotates 0-90 degrees left and right in sync with the forward and backward movement, which can capture the details of the spiral surface of the spring. The platform moves left and right to adjust the horizontal position of the part, and the lens moves up and down to adapt to the length of the part. Finally, a single lens can capture the part 360 degrees without blind spots, taking into account both appearance defect detection and size measurement needs.

[0042] 3. Flexible Light Source System: Equipped with a multi-angle adjustable light source module, the light source types include ring light, backlight, and strip light. The angle, brightness, color, and other parameters of the light source can be precisely controlled via software according to the detection requirements. When detecting surface defects of reflective objects, the angle and brightness of the ring light can be adjusted to reduce reflective interference, making the defect features clearer in the camera image. For detecting internal defects in transparent objects, the backlight provides uniform light penetration, assisting the camera in capturing internal information.

[0043] 4. Can be paired with intelligent image stitching and analysis algorithms: By developing advanced image stitching algorithms, images captured by the lens from different positions and angles can be seamlessly stitched into a complete image of an object's surface, eliminating stitching gaps and distortions. Simultaneously, deep learning algorithms can be used to analyze the stitched image, quickly identifying various defects on the object's surface such as scratches, cracks, holes, and dimensional deviations. For dimensional measurement of parts such as springs, hardware, stamping, die casting, injection molding, and industrial components, the algorithm can accurately calculate key dimensional parameters such as diameter, length, angle, and spacing, with an accuracy down to the micrometer level.

[0044] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A multi-view vision inspection machine, comprising a drive transmission structure assembly (30), characterized in that: The drive transmission structure assembly (30) includes a protective housing (301) and an X-axis linear transmission module (319) and a Y-axis linear transmission module (320) disposed inside the protective housing (301). The top surface of the protective housing (301) is provided with an X-axis linear opening (321) and a Y-axis linear opening (322). The X-axis linear transmission module (319) is provided with a rotating mechanism platform (317), which is connected to the bottom end of a rotating platform adapter (308). The rotating platform adapter (308) extends upward through the X-axis linear opening (321), and the top of the rotating platform adapter (308) is provided with a product inspection platform (304). The product inspection platform (304) can move left and right and rotate around the vertical center line; the Y-axis linear transmission module (320) is provided with a reducer support plate (318) that passes upward through the Y-axis linear opening (322), the top of the reducer support plate (318) is provided with a reducer (312), the reducer (312) is connected to the visual inspection camera (20), the visual inspection camera (20) can move back and forth and swing left and right around the horizontal center line extending back and forth; the visual inspection camera (20) includes a Z-axis linear transmission module (211) and a camera (203) set on the Z-axis linear transmission module (211), the camera (203) can move up and down.

2. The multi-view vision inspection machine according to claim 1, characterized in that: The X-axis linear drive module (319) is located in front of the Y-axis linear drive module (320), and the X-axis linear opening (321) is located in front of the Y-axis linear opening (322). The reducer (312) is a cylindrical body extending axially back and forth. The rear end of the reducer (312) is the input end and is connected to the first servo motor (313). The front end of the reducer (312) is the output end. The visual inspection camera (20) includes a Z-axis linear drive module support plate (209). The length direction of the Z-axis linear drive module support plate (209) is perpendicular to the axial direction of the reducer (312). One end of the Z-axis linear drive module support plate (209) is connected to the output end of the reducer (312). The Z-axis linear drive module (211) is located on the front side of the other end of the Z-axis linear drive module support plate (209).

3. The multi-view vision inspection machine according to claim 2, characterized in that: The Z-axis linear drive module (211) is a linear drive module assembly (40) distributed along the length direction of the Z-axis linear drive module support plate (209); the Z-axis linear drive module (211) is provided with a Z-axis slide plate (205), the camera (203), and the camera protective box (201) in sequence in front of it. The Z-axis slide plate (205) is mounted on the Z-axis linear drive module (211), and the camera (203) and the camera protective box (201) are mounted on the Z-axis slide plate (205). The axial direction of the camera (203) is parallel to the length direction of the Z-axis linear drive module support plate (209). The lens of the camera (203) faces one end of the Z-axis linear drive module support plate (209). The camera protective box (201) can protect the camera (203).

4. The multi-view vision inspection machine according to claim 3, characterized in that: The camera (203) is fixed on the Z-axis slide plate (205) by the front camera bracket (204) and the rear camera bracket (206). The other end of the Z-axis linear drive module bracket plate (209) is covered by the Z-axis linear module protective box (202). A backlight plate (207) is provided between the camera protective box (201) and the Z-axis slide plate (205). The backlight plate (207) is fixed on the Z-axis slide plate (205) by the backlight plate bracket (208). The backlight plate (207) can provide light for the camera (203).

5. The multi-view vision inspection machine according to claim 3, characterized in that: The Z-axis slide plate (205) is mounted on the Z-axis linear transmission module (211) via the Z-axis adapter plate (210). One end of the Z-axis linear transmission module support plate (209) is connected to the output end of the reducer (312) via the reducer adapter block (311). The rotating mechanism platform (317) is connected to the X-axis linear transmission module (319) via the X-axis adapter plate (306). The reducer support plate (318) is connected to the Y-axis linear transmission module (320) via the Y-axis adapter plate (316).

6. The multi-view vision inspection machine according to claim 2, characterized in that: A rotating shaft support plate (310) is provided below the reducer (312). The rotating shaft support plate (310) and the reducer support plate (318) are used to fix the reducer (312). A rotating shaft protective box (309) is provided behind the reducer support plate (318). The rotating shaft protective box (309) covers the reducer (312).

7. A multi-view vision inspection machine according to any one of claims 1 to 6, characterized in that: The X-axis linear transmission module (319) is a linear transmission module assembly (40) distributed along the X-axis direction, and the Y-axis linear transmission module (320) is a linear transmission module assembly (40) distributed along the Y-axis direction. The linear transmission module assembly (40) includes a linear module base plate (406), and two parallel guide rails (407) are provided on the linear module base plate (406). A fixed end (404) and a support end (409) are fixedly provided at both ends of the linear module base plate (406). The fixed end (404) and the support end (409) are rotatably connected to both ends of the lead screw (410). The middle part of the lead screw (410) is threadedly connected to the lead screw nut seat (411). The lead screw nut seat (411) is slidably engaged with the two guide rails (407). One end of the lead screw (410) is driven and connected to the second servo motor (401).

8. The multi-view vision inspection machine according to claim 7, characterized in that: The outer side of the fixed end (404) is provided with a servo motor fixing plate (402) and a second servo motor (401). The second servo motor (401) is mounted on the servo motor fixing plate (402). The fixed end (404) is provided with a fixed end bearing (405) through which one end of the lead screw (410) passes. The second servo motor (401) is connected to one end of the lead screw (410) through a coupling (403). The support end (409) is provided with a support end bearing (408) through which the other end of the lead screw (410) passes.

9. A multi-view vision inspection machine according to any one of claims 1 to 6, characterized in that: The top of the rotating platform adapter (308) is connected to the platform mounting plate (305); the four corners of the platform mounting plate (305) are respectively provided with L-shaped limit blocks; the product testing platform (304) is fixedly installed on the platform mounting plate (305); the product testing platform (304) is an acrylic platform.

10. A multi-view vision inspection machine according to any one of claims 1 to 6, characterized in that: The bottom of the protective enclosure (301) is provided with a protective enclosure base plate (302), the rear end of the protective enclosure (301) is provided with a cooling fan (314) and two protective covers (315), the X-axis linear opening (321) and the Y-axis linear opening (322) are respectively provided with bellows protective blades (303), and the interior of the protective enclosure (301) is provided with PLC electronic components (307); the protective enclosure (301) is set on the enclosure base (10), and the interior of the enclosure base (10) is equipped with a servo motor driver and circuit components.

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