Foldable multi-angle large product surface image acquisition device

Abstract

The application discloses a foldable multi-angle large product surface image acquisition device. The development board of the device is installed on the first telescopic moving mechanism, the welded steel plate is installed on the top of the first telescopic moving mechanism, the gear belt driving mechanism is installed on the welded steel plate, one side of the electromagnetic connecting rod mechanism is hinged on the gear belt driving mechanism, the other side is slidingly installed on the foldable guide rail, the foldable guide rail is installed on the top of the second telescopic moving mechanism, the image acquisition mechanism is slidingly installed on the foldable guide rail, the image acquisition mechanism and the other side of the electromagnetic connecting rod mechanism are magnetically attracted, and the photosensitive sensor is installed in the middle of the side of the foldable guide rail. The device utilizes the belt gear transmission and the connecting rod transmission to control the arc motion of the camera on the guide rail, and can realize the surface image shooting of different visual angles according to the product as the center. The device is convenient to fold, unfold, place and carry, and is suitable for frequent operation occasions.

Description

Technical Field

[0001] This invention relates to a surface image acquisition device, specifically a foldable, multi-angle large product surface image acquisition device. Background Technology

[0002] Acquiring and processing images of the surfaces of large and complex products is an important research topic in the industrial field. However, using a single camera can only capture a local area of ​​a large and complex product, and cannot obtain a global image of the product's surface. Generally, multiple cameras can be arranged around the product to acquire local area images, and then combined to obtain a global image of the product's surface. However, this method is limited by the price of the cameras, and combining multiple cameras greatly increases the acquisition cost. Therefore, how to acquire multi-angle surface images of large products at a low cost is an important issue.

[0003] On the production line, only surface information of new products is often needed. When a new product appears, a data acquisition device is used to capture images of the surface of large products. When no new product is present, the acquisition device is not used. Placing the acquisition device on the production line for extended periods would disrupt production operations. Therefore, it is necessary to frequently disassemble and reassemble the large part surface image acquisition device depending on the presence of a new product. For typical devices, the processes of fixing or disassembling different parts and moving the device are too cumbersome, increasing time and labor costs. Summary of the Invention

[0004] To address the problems existing in the background technology, the present invention provides a foldable, multi-angle image acquisition device for the surface of large products. This device controls the movement of a camera stage on an arc-shaped guide rail centered on the product via a linkage transmission. The position of the camera stage on the arc-shaped guide rail is controlled by controlling the rotation angle of a rocker arm, thereby controlling the camera's shooting angle and acquiring local images of the surface of large, complex products from different perspectives. This product is extendable, foldable, and easy to carry, making it suitable for frequent operation.

[0005] The technical solution adopted in this invention is:

[0006] The foldable multi-angle large product surface image acquisition device of the present invention includes a first telescopic moving mechanism, a development board, a welded steel plate, a gear belt drive mechanism, an electromagnetic linkage mechanism, a foldable guide rail, a second telescopic moving mechanism, an image acquisition mechanism, and a photosensitive sensor. The development board is mounted on the first telescopic moving mechanism, the welded steel plate is mounted on the top of the first telescopic moving mechanism, the gear belt drive mechanism is mounted on the welded steel plate, one side of the electromagnetic linkage mechanism is hinged to the gear belt drive mechanism, and the other side of the electromagnetic linkage mechanism is slidably mounted on the foldable guide rail. The welded steel plate is located on the middle side of the foldable guide rail and is connected to the bottom center of the foldable guide rail on the side closest to the foldable guide rail. The foldable guide rail is mounted on the top of the second telescopic moving mechanism, the image acquisition mechanism is slidably mounted on the foldable guide rail, and the other side of the image acquisition mechanism and the electromagnetic linkage mechanism are magnetically attracted to each other. The photosensitive sensor is mounted on the middle side of the foldable guide rail. The development board is electrically connected to the gear belt drive mechanism, the electromagnetic linkage mechanism, the image acquisition mechanism, the photosensitive sensor, and an external computer device.

[0007] The electromagnetic linkage mechanism includes two electromagnetic rods, both horizontally arranged and symmetrical about the axis of symmetry of the foldable guide rail. Each electromagnetic rod includes a rocker arm, a connecting rod, and an electromagnetic sliding block. One end of the rocker arm is hinged to a gear belt drive mechanism, and the other end of the rocker arm is hinged to one end of the connecting rod. The other end of the connecting rod is equipped with an electromagnetic sliding block, which is slidably mounted on the foldable guide rail. The electromagnetic sliding block and the image acquisition mechanism are magnetically attracted to each other. The two electromagnetic sliding blocks are electrically connected to the development board.

[0008] The foldable guide rail is a three-fold arc-shaped guide rail with the track located on its top surface. The foldable guide rail is arranged horizontally and bends towards the side opposite to the welded steel plate. Hinges are symmetrically arranged on both sides of the middle of the side of the foldable guide rail closest to the welded steel plate. The hinges are located at the bends of the foldable guide rail. Guide rail pins are provided at both bends on the side of the foldable guide rail away from the welded steel plate. A photosensitive sensor is installed in the middle of the side of the foldable guide rail closest to the welded steel plate.

[0009] The telescopic rod and its rocker arm of the image acquisition device are symmetrically distributed about the centerline of the foldable guide rail, with the rocker arms maintaining the same height. The angle formed by the rotation of the rocker arm and the foldable guide rail remains consistent. The lengths of the two connecting rods are identical. Therefore, regardless of whether in motion or at rest, the electromagnetic sliding block hinged to the connecting rod is always symmetrically distributed about the centerline of the foldable guide rail.

[0010] The image acquisition mechanism includes a camera and a camera slide stage. The camera slide stage is slidably mounted on a foldable guide rail. A sheet metal is provided on one side of the camera slide stage near the welded steel plate, and the camera is mounted on the other side of the camera slide stage away from the welded steel plate. The camera faces the radial direction of the foldable guide rail, and a cover plate is provided at the center of the top surface of the camera slide stage. The camera slide stage is magnetically attached to one of the electromagnetic sliding blocks by a patch. The camera is electrically connected to the development board.

[0011] The top of the electromagnetic slider is an electromagnet; when energized, it generates magnetism and adheres to the sheet metal behind the camera movement platform. A photosensitive sensor detects whether the camera is centered. When the camera is slid to the center of the foldable guide rail by one of the electromagnetic rods, a shield on the electromagnetic slider blocks the photosensitive sensor, ensuring the camera is centered. The development board controls the de-energization of one electromagnetic slider magnetically attached to the camera movement platform, while the other slider is energized, causing the camera movement platform and the other electromagnetic slider to magnetically attract each other.

[0012] The gear and belt drive mechanism includes three transmission support frames, a belt, a drive pulley, a servo motor, a driven pulley, a drive gear, and a driven gear. The servo motor's body is mounted on a welded steel plate via the first transmission support frame. The servo motor's rotation shaft is vertically upward and synchronously connected to the lower end of the central shaft of the horizontally arranged drive pulley. The upper end of the central shaft of the drive pulley is hinged to one end of the rocker arm of one of the electromagnetic rods. The driven pulley and the drive pulley are arranged parallel to each other at intervals and at the same height, and are connected by a belt drive. The driven pulley is horizontally mounted on the welded steel plate via the second transmission support frame. The drive gear is located directly above the driven pulley and is horizontally arranged. The central shafts of the driven pulley and the drive gear are synchronously connected. The driven gear is horizontally mounted on the welded steel plate away from the drive pulley via the third transmission support frame. The driven gear and the drive gear mesh with each other. The upper end of the central shaft of the driven gear is hinged to one end of the rocker arm of another electromagnetic rod. The servo motor is electrically connected to the development board.

[0013] Gear transmission consists of two identical meshing gears with identical module, pitch circle, and other parameters. The driving gear is fixed to the bearings of the transmission support frame via pins and couplings, while the driven gear is fixed to the bearings of the transmission support frame via pins and couplings. When the driving gear rotates, it drives the driven gear to rotate.

[0014] The belt drive consists of two identical pulleys and a belt. The pulley ratio is 1:1. The driving pulley and the servo motor are fixed together by a coupling and pins, while the driven pulley is fixed to the bearings of the transmission support frame by a coupling. When the driving pulley rotates, it drives the driven pulley to rotate.

[0015] The development board can be an Arduino board, a Raspberry Pi, or a microcontroller, etc. It is used to control whether a servo motor rotates and its rotation angle, monitor photosensor signals, and control whether an electromagnetic block is powered.

[0016] The first telescopic moving mechanism includes three telescopic rod rollers and a telescopic rod support frame. The three telescopic rod rollers are arranged vertically at intervals. Each telescopic rod roller includes a caster and a telescopic rod. The top end of the telescopic rod is connected to the bottom surface of a welded steel plate, and a caster is installed at the bottom end of the telescopic rod. The bottoms of the three telescopic rods are connected to each other through the telescopic rod support frame. The development board is installed on the telescopic rod support frame.

[0017] The casters are Foma wheels, which can rotate freely in all directions and are equipped with brakes. When the brakes are applied, the casters cannot move. The telescopic rod is adjustable in length and is fixed in length using bushings.

[0018] The two ends of the foldable guide rail are respectively provided with guide rail end fixing brackets for limiting the electromagnetic sliding block;

[0019] The second telescopic moving mechanism includes two telescopic rod rollers, which are arranged vertically at intervals. Each telescopic rod roller includes a caster and a telescopic rod. The top ends of the two telescopic rods are connected to the bottom surface of a guide rail end fixing frame of their respective rods, and casters are installed at the bottom ends of the two telescopic rods.

[0020] When the image acquisition device is to capture an image, the foldable guide rail is fully unfolded along the two hinges, and the two guide rail pins are placed at the bends of the foldable guide rail. The image acquisition device is moved to a preset shooting position near the large product to be photographed via the casters of the first and second telescopic moving mechanisms. The height of the telescopic rods of the first and second telescopic moving mechanisms is adjusted to move the camera of the image acquisition device to the preset shooting height. At this time, one of the energized electromagnetic sliding blocks in the camera sliding stage and electromagnetic linkage mechanism magnetically attracts each other. An external computer device drives a development board to control the servo motor to rotate, which in turn sequentially drives the active pulley, passive pulley, active gear, and passive gear of the gear and belt transmission mechanism to rotate. This, in turn, sequentially drives the rocker arm, connecting rod, electromagnetic sliding block, and camera sliding stage to move the camera to slide on one side of the foldable guide rail. The development board controls a camera to capture images of large products. When the camera is about to move to the other side of the foldable guide rail, the development board controls a servo motor to rotate forward, sliding two electromagnetic sliders to the center of the foldable guide rail. At this time, the camera slide stage moves the camera to the center of the foldable guide rail. The shield on the electromagnetic slider blocks the photosensitive sensor. The development board determines that the camera is centered and controls one of the electromagnetic sliders magnetically attached to the camera movement stage to de-energize, causing the de-energized electromagnetic slider to disconnect from the camera movement stage. The development board then controls the other electromagnetic slider to be energized, causing the camera movement stage to magnetically attract the other electromagnetic slider. At this time, the development board controls the servo motor to rotate in the opposite direction, and the camera moves continuously from one side of the foldable guide rail to the other side and slides. Simultaneously, the development board controls the camera to capture images of large products, realizing multi-angle acquisition of images of the surface of large products.

[0021] The device of this invention controls the movement of a camera on an arc-shaped guide rail centered on the product through a linkage transmission. The position of the camera on the arc-shaped guide rail is controlled by controlling the rotation angle of the rocker arm, thereby controlling the shooting angle of the camera and acquiring local images of the surface of large and complex products from different perspectives. The device is telescopic, foldable and easy to carry, and is suitable for occasions with frequent operations.

[0022] The beneficial effects of this invention are:

[0023] 1) This invention utilizes belt drive, gear meshing drive, and linkage drive to control the camera to make arc-shaped movements on the guide rail, and can capture surface images from different perspectives centered on the product as needed, thereby reducing the cost of using multiple cameras for shooting.

[0024] 2) This invention is easy to fold, unfold, and store. When not in use, the guide rail section can be folded along the hinge, and the telescopic rod can be retracted, reducing the occupied area and allowing it to be placed in a location that does not obstruct production operations. When in use, the guide rail section can be unfolded along the hinge, the telescopic rod can be extended to a suitable length, and it can be moved to the designated position. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the image acquisition device of the present invention;

[0026] Figure 2 This is an enlarged schematic diagram of the device structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the electrical connection relationship of the device of the present invention;

[0028] Figure 4 This is a schematic diagram of the movement of the device of the present invention;

[0029] In the diagram: 1. Caster, 2. Telescopic rod support frame, 3. Telescopic rod, 4. Welded steel plate, 5. Transmission support frame, 6. Belt, 7. Drive pulley, 8. Rocker arm, 9. Connecting rod, 10. Electromagnetic slider, 11. Development board, 12. Servo motor, 14. Passive pulley, 15. Drive gear, 16. Passive gear, 20. Foldable guide rail, 21. Camera, 22. Camera sliding stage, 23. Hinge, 24. Photosensitive sensor, 25. Guide rail pin, 26. Guide rail end fixing bracket. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] like Figure 1 and Figure 3 As shown, the foldable multi-angle large product surface image acquisition device of the present invention includes a first telescopic moving mechanism, a development board 11, a welded steel plate 4, a gear belt drive mechanism, an electromagnetic linkage mechanism, a foldable guide rail 20, a second telescopic moving mechanism, an image acquisition mechanism, and a photosensitive sensor 24. The development board 11 is mounted on the first telescopic moving mechanism, the welded steel plate 4 is mounted on the top of the first telescopic moving mechanism, the gear belt drive mechanism is mounted on the welded steel plate 4, one side of the electromagnetic linkage mechanism is hinged to the gear belt drive mechanism, and the other side of the electromagnetic linkage mechanism is slidably mounted on the foldable guide rail 20. On the guide rail 20, the welded steel plate 4 is located on the middle side of the foldable guide rail 20 and is connected to the bottom center of the foldable guide rail 20 on the side closest to the foldable guide rail 20. The foldable guide rail 20 is installed on the top of the second telescopic moving mechanism. The image acquisition mechanism is slidably installed on the foldable guide rail 20. The image acquisition mechanism and the electromagnetic linkage mechanism are magnetically attracted to each other on the other side. The photosensitive sensor 24 is installed in the middle of the side of the foldable guide rail 20. The development board 11 is electrically connected to the gear belt drive mechanism, the electromagnetic linkage mechanism, the image acquisition mechanism, the photosensitive sensor 24, and the external computer equipment.

[0032] The electromagnetic linkage mechanism includes two electromagnetic rods, both of which are horizontally arranged and symmetrical about the axis of symmetry of the foldable guide rail 20. Each electromagnetic rod includes a rocker arm 8, a connecting rod 9, and an electromagnetic sliding block 10. One end of the rocker arm 8 is hinged to a gear belt drive mechanism, and the other end of the rocker arm 8 is hinged to one end of the connecting rod 9. The other end of the connecting rod 9 is equipped with an electromagnetic sliding block 10, which is slidably mounted on the foldable guide rail 20. The electromagnetic sliding block 10 and the image acquisition mechanism are magnetically attracted to each other. The two electromagnetic sliding blocks 10 are electrically connected to the development board 11.

[0033] like Figure 2 As shown, the foldable guide rail 20 is a three-fold arc-shaped guide rail with the track located on its top surface. The foldable guide rail 20 is arranged horizontally and bends towards the opposite side of the welded steel plate 4. Hinges 23 are symmetrically arranged on both sides of the middle of the side of the foldable guide rail 20 closest to the welded steel plate 4. The position of the hinges 23 is the bend of the foldable guide rail 20. Guide rail pins 25 are provided at both bends on the side of the foldable guide rail 20 away from the welded steel plate 4. The photosensitive sensor 24 is installed in the middle of the side of the foldable guide rail 20 closest to the welded steel plate 4.

[0034] The telescopic rod 3 of the image acquisition device and its rocker arm 8 are symmetrically distributed about the center line of the foldable guide rail 20, with the rocker arm 8 maintaining the same height. The angle formed by the rotation of the rocker arm 8 and the foldable guide rail 20 remains consistent. The two connecting rods 9 have the same length. Therefore, whether in motion or at rest, the electromagnetic sliding block 10, hinged to the connecting rod 9, is always symmetrically distributed about the center line of the foldable guide rail 20.

[0035] The image acquisition mechanism includes a camera 21 and a camera slide stage 22. The camera slide stage 22 is slidably mounted on a foldable guide rail 20. The side of the camera slide stage 22 near the welded steel plate 4 is provided with a sheet metal. The camera 21 is mounted on the other side of the camera slide stage 22 away from the welded steel plate 4. The camera faces the radial direction of the foldable guide rail 20. A cover plate is provided at the center of the top surface of the camera slide stage 22. The camera slide stage 22 is magnetically attached to one of the electromagnetic sliding blocks 10 by a patch. The camera 21 is electrically connected to the development board 11.

[0036] The top of the electromagnetic slider 10 is an electromagnet, which generates magnetism when energized and adheres to the sheet metal behind the camera movement stage 22. The photosensitive sensor 24 is used to detect whether the camera 21 is centered. When the camera 21 is slid to the center of the foldable guide rail 20 by one of the electromagnetic rods, the cover on the electromagnetic slider 10 blocks the photosensitive sensor 24. At this time, the camera 21 is centered. The development board 11 controls the de-energization of one electromagnetic slider 10 that is magnetically attracted to the camera movement stage 22, while the other electromagnetic slider 10 is energized, so that the camera movement stage 22 and the other electromagnetic slider 10 are magnetically attracted to each other.

[0037] The gear belt drive mechanism includes three transmission support frames 5, a belt 6, a drive pulley 7, a servo motor 12, a driven pulley 14, a drive gear 15, and a driven gear 16. The body of the servo motor 12 is mounted on a welded steel plate 4 via the first transmission support frame 5. The rotation shaft of the servo motor 12 is vertically and upwardly connected to the lower end of the central shaft of the horizontally arranged drive pulley 7. The upper end of the central shaft of the drive pulley 7 is hinged to one end of the rocker arm 8 of one of the electromagnetic rods. The driven pulley 14 and the drive pulley 7 are arranged parallel to each other at intervals and at the same height. The wheels 14 are connected by a belt 6; the driven pulley 14 is horizontally mounted on the welded steel plate 4 via a second transmission support frame 5, the driving gear 15 is located directly above the driven pulley 14 and is arranged horizontally, the central shafts of the driven pulley 14 and the driving gear 15 are synchronously connected, the driven gear 16 is horizontally mounted on the welded steel plate 4 away from the driving pulley 7 via a third transmission support frame 5, the driven gear 16 and the driving gear 15 mesh with each other, the upper end of the central shaft of the driven gear 16 is hinged to one end of the rocker arm 8 of another electromagnetic rod; the servo motor 12 is electrically connected to the development board 11.

[0038] like Figure 3 As shown, the gear transmission consists of two identical gears 15 and 16 meshing together, with identical parameters such as module and pitch circle. The driving gear 15 is fixed to the bearing of the transmission support frame 5 via a pin and coupling, and the driven gear 16 is also fixed to the bearing of the transmission support frame 5 via a pin and coupling. When the driving gear 15 rotates, it drives the driven gear 16 to rotate.

[0039] The belt drive consists of two identical pulleys 7 and 14 and a belt 6. The transmission ratio of pulleys 7 and 14 is 1:1. The driving pulley 7 and the servo motor 12 are fixed together by a coupling and a pin, while the driven pulley 14 is fixed to the bearing of the transmission support frame 5 by a coupling. When the driving pulley 7 rotates, it drives the driven pulley 14 to rotate.

[0040] The development board 11 can be an Arduino board, a Raspberry Pi, or a microcontroller, etc. The development board 11 is used to control whether the servo motor 12 rotates and the rotation angle, monitor the signal of the photosensitive sensor 24, and control whether the electromagnetic block 10 is powered.

[0041] The first telescopic moving mechanism includes three telescopic rod rollers and a telescopic rod support frame 2. The three telescopic rod rollers are arranged vertically at intervals. Each telescopic rod roller includes a caster 1 and a telescopic rod 3. The top of the telescopic rod 3 is connected to the bottom surface of the welded steel plate 4. The bottom of the telescopic rod 3 is equipped with a caster 1. The bottoms of the three telescopic rods 3 are connected to each other through the telescopic rod support frame 2. The development board 11 is installed on the telescopic rod support frame 2.

[0042] Caster 1 is a fuma wheel, which can rotate freely in all directions and is equipped with a brake device. When the brake is applied, caster 1 cannot move. Telescopic rod 3 is freely adjustable in length and is fixed in length using a bushing.

[0043] The two ends of the foldable guide rail 20 are respectively provided with guide rail end fixing brackets 26 for limiting the electromagnetic sliding block 10.

[0044] The second telescopic moving mechanism includes two telescopic rod rollers, which are arranged vertically at intervals. Each telescopic rod roller includes a caster 1 and a telescopic rod 3. The top ends of the two telescopic rods 3 are connected to the bottom surface of their respective guide rail end fixing brackets 26, and the bottom ends of the two telescopic rods 3 are equipped with casters 1.

[0045] The image acquisition method of the foldable multi-angle large product surface image acquisition device of the present invention is as follows:

[0046] When an image is to be captured, the image acquisition device fully unfolds the foldable guide rail 20 along the two hinges 23 and places the two guide rail pins 25 at the bends of the foldable guide rail 20. The image acquisition device is moved to a preset shooting position near the large product to be captured via the casters 1 of the first and second telescopic moving mechanisms. The height of the telescopic rods 3 of the first and second telescopic moving mechanisms is adjusted so that the camera 21 of the image acquisition device moves to the preset shooting height. At this time, the camera sliding platform 22 and one of the energized electromagnetic sliding blocks 10 in the electromagnetic linkage mechanism are magnetically attracted to each other. The servo motor 12 is controlled to rotate via the development board 11, which in turn drives the active pulley 7, passive pulley 14, active gear 15, and passive gear 16 of the gear belt transmission mechanism to rotate sequentially. This, in turn, drives the camera 21 to slide on one side of the foldable guide rail 20 via the rocker arm 8, connecting rod 9, electromagnetic sliding block 10, and camera sliding platform 22. Simultaneously, the camera 21 is controlled by the development board 11 driven by an external computer device. 1. Capturing images of large products: When camera 21 is about to move to the other side of the foldable guide rail 20 to take a picture, the development board 11 controls the servo motor 12 to rotate forward, sliding two electromagnetic sliding blocks 10 to the center of the foldable guide rail 20. At this time, the camera sliding stage 22 drives camera 21 to move to the center of the foldable guide rail 20. The shield on the electromagnetic sliding block 10 blocks the photosensitive sensor 24. At this time, the development board 11 determines that camera 21 is centered. The development board 11 controls one of the electromagnetic sliding blocks 10 that is magnetically attracted to the camera moving stage 22 to de-energize, so that the de-energized electromagnetic sliding block 10 and the camera moving stage 22 are disconnected. The other electromagnetic sliding block 10 is energized, so that the camera moving stage 22 and the other electromagnetic sliding block 10 are magnetically attracted. At this time, the development board 11 controls the servo motor 12 to rotate in the opposite direction, and camera 21 moves continuously from one side of the foldable guide rail 20 to the other side of the foldable guide rail 20 and slides. At the same time, the development board 11 controls camera 21 to capture images of large products, realizing multi-angle acquisition of surface images of large products.

[0047] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A foldable, multi-angle large product surface image acquisition device, characterized in that: The system includes a first telescopic moving mechanism, a development board (11), a welded steel plate (4), a gear belt drive mechanism, an electromagnetic linkage mechanism, a foldable guide rail (20), a second telescopic moving mechanism, an image acquisition mechanism, and a photosensitive sensor (24). The development board (11) is mounted on the first telescopic moving mechanism, the welded steel plate (4) is mounted on the top of the first telescopic moving mechanism, the gear belt drive mechanism is mounted on the welded steel plate (4), one side of the electromagnetic linkage mechanism is hinged to the gear belt drive mechanism, and the other side of the electromagnetic linkage mechanism is slidably mounted on the foldable guide rail (20). The welded steel plate (4) is located on... The middle side of the foldable guide rail (20) and the side near the foldable guide rail (20) are connected to the bottom center of the foldable guide rail (20). The foldable guide rail (20) is installed on the top of the second telescopic moving mechanism. The image acquisition mechanism is slidably installed on the foldable guide rail (20). The image acquisition mechanism and the electromagnetic linkage mechanism are magnetically attracted to each other on the other side. The photosensitive sensor (24) is installed in the middle of the side of the foldable guide rail (20). The development board (11) is electrically connected to the gear belt drive mechanism, the electromagnetic linkage mechanism, the image acquisition mechanism, the photosensitive sensor (24), and the external computer equipment, respectively. The electromagnetic linkage mechanism includes two electromagnetic rods, both of which are horizontally arranged and symmetrical about the axis of symmetry of the foldable guide rail (20). Each electromagnetic rod includes a rocker (8), a connecting rod (9), and an electromagnetic sliding block (10). One end of the rocker (8) is hinged to the gear belt drive mechanism, and the other end of the rocker (8) is hinged to one end of the connecting rod (9). The other end of the connecting rod (9) is equipped with an electromagnetic sliding block (10). The electromagnetic sliding block (10) is slidably mounted on the foldable guide rail (20), and the electromagnetic sliding block (10) and the image acquisition mechanism are magnetically attracted to each other. The two electromagnetic sliding blocks (10) are electrically connected to the development board (11). The image acquisition mechanism includes a camera (21) and a camera slide (22). The camera slide (22) is slidably mounted on a foldable guide rail (20). The side of the camera slide (22) near the welded steel plate (4) is provided with a sheet metal. The camera (21) is mounted on the other side of the camera slide (22) away from the welded steel plate (4). The camera faces the radial direction of the foldable guide rail (20). A cover plate is provided at the center of the top surface of the camera slide (22). The camera slide (22) is magnetically attached to one of the electromagnetic sliding blocks (10) by a patch. The camera (21) is electrically connected to the development board (11).

2. The foldable multi-angle large product surface image acquisition device according to claim 1, characterized in that: The foldable guide rail (20) is a three-fold arc-shaped guide rail with the track located on its top surface. The foldable guide rail (20) is arranged horizontally and bends toward the opposite side of the welded steel plate (4). Hinges (23) are respectively provided on the two symmetrical sides of the middle of the side of the foldable guide rail (20) close to the welded steel plate (4). The position of the hinge (23) is the bend of the foldable guide rail (20). Guide rail pins (25) are provided at the two bends of the side of the foldable guide rail (20) away from the welded steel plate (4). The photosensitive sensor (24) is installed in the middle of the side of the foldable guide rail (20) close to the welded steel plate (4).

3. The foldable multi-angle large product surface image acquisition device according to claim 1, characterized in that: The gear and belt drive mechanism includes three transmission support frames (5), a belt (6), a drive pulley (7), a servo motor (12), a driven pulley (14), a drive gear (15), and a driven gear (16). The body of the servo motor (12) is mounted on a welded steel plate (4) via the first transmission support frame (5). The rotation shaft of the servo motor (12) is vertically and synchronously connected to the lower end of the central shaft of the horizontally arranged drive pulley (7). The upper end of the central shaft of the drive pulley (7) is hinged to one end of the rocker arm (8) of one of the electromagnetic rods. The driven pulley (14) and the drive pulley (7) are arranged parallel to each other at intervals and at the same height. The drive pulley (7) and the driven pulley (6) are connected to each other. The wheels (14) are connected by a belt (6); the passive pulley (14) is horizontally mounted on the welded steel plate (4) through the second transmission support frame (5), the driving gear (15) is located directly above the passive pulley (14) and is arranged horizontally, the central shafts of the passive pulley (14) and the driving gear (15) are synchronously connected, the passive gear (16) is horizontally mounted on the side of the welded steel plate (4) away from the driving pulley (7) through the third transmission support frame (5), the passive gear (16) and the driving gear (15) mesh with each other, the upper end of the central shaft of the passive gear (16) is hinged to one end of the rocker arm (8) of another electromagnetic rod; the servo motor (12) is electrically connected to the development board (11).

4. The foldable multi-angle large product surface image acquisition device according to claim 1, characterized in that: The first telescopic moving mechanism includes three telescopic rod rollers and a telescopic rod support frame (2). The three telescopic rod rollers are arranged vertically at intervals. Each telescopic rod roller includes a caster (1) and a telescopic rod (3). The top of the telescopic rod (3) is connected to the bottom surface of the welded steel plate (4). The bottom of the telescopic rod (3) is equipped with a caster (1). The bottoms of the three telescopic rods (3) are connected to each other through the telescopic rod support frame (2). The development plate (11) is installed on the telescopic rod support frame (2).

5. The foldable multi-angle large product surface image acquisition device according to claim 1, characterized in that: The two ends of the foldable guide rail (20) are respectively provided with guide rail end fixing brackets (26) for limiting the electromagnetic sliding block (10). The second telescopic moving mechanism includes two telescopic rod rollers, which are arranged vertically at intervals. Each telescopic rod roller includes a caster (1) and a telescopic rod (3). The top ends of the two telescopic rods (3) are connected to the bottom surface of a guide rail end fixing frame (26) of each of them. The bottom ends of the two telescopic rods (3) are equipped with casters (1).

6. The image acquisition method of the foldable multi-angle large product surface image acquisition device according to any one of claims 1-5, characterized in that: When the image acquisition device is to capture an image, the foldable guide rail (20) is fully unfolded along the two hinges (23), and the two guide rail pins (25) are placed at the bend of the foldable guide rail (20). The image acquisition device is moved to the preset shooting position near the large product to be photographed by the casters (1) of the first telescopic moving mechanism and the second telescopic moving mechanism. The height of the telescopic rods (3) of the first telescopic moving mechanism and the second telescopic moving mechanism is adjusted so that the camera (21) of the image acquisition device is moved to the preset shooting height. At this time, the camera sliding stage (22) and the electromagnetic connecting rod are connected. One of the energized electromagnetic sliders (10) in the mechanism is magnetically attracted to each other. The servo motor (12) is controlled to rotate by the development board (11), which in turn drives the active pulley (7), passive pulley (14), active gear (15), and passive gear (16) of the gear belt transmission mechanism to rotate in sequence. This drives the camera (21) to slide on one side of the foldable guide rail (20) in sequence through the rocker arm (8), connecting rod (9), electromagnetic slider (10), and camera sliding stage (22). At the same time, the camera (21) is controlled by the development board (11) to take pictures of large products. Image; When the camera (21) is about to move to the other side of the foldable guide rail (20) to take a picture, the development board (11) controls the servo motor (12) to rotate forward and slide the two electromagnetic sliders (10) to the center of the foldable guide rail (20). At this time, the camera slide table (22) drives the camera (21) to move to the center of the foldable guide rail (20). The shield on the electromagnetic slider (10) blocks the photosensitive sensor (24). At this time, the development board (11) determines that the camera (21) is centered. The development board (11) controls one electromagnetic slider that is magnetically attracted to the camera slide table (22). When block (10) is de-energized, the de-energized electromagnetic sliding block (10) and the camera sliding stage (22) are disconnected. Then, another electromagnetic sliding block (10) is energized, causing the camera sliding stage (22) and the other electromagnetic sliding block (10) to be magnetically attracted. At this time, the servo motor (12) is controlled to rotate in the opposite direction by the development board (11), and the camera (21) moves continuously from one side of the foldable guide rail (20) to the other side of the foldable guide rail (20) and slides. At the same time, the camera (21) is controlled by the development board (11) to capture images of large products, thereby realizing multi-angle acquisition of images of the surface of large products.

Images