Machine vision detection equipment

Abstract

The utility model relates to the technical field of workpiece inspection, and discloses machine vision inspection equipment which comprises an inspection table, a gear ring is rotatably connected in a fixing ring, a first camera is fixedly mounted on the outer surface of a mounting plate, a transmission gear is fixedly sleeved on the outer surface of the bottom of a connecting shaft, and a second camera is fixedly mounted on the outer surface of the connecting shaft. A first motor is fixedly mounted on the outer surface of the top of the supporting plate, a second electric push rod is fixedly mounted on the outer surface of the front side of the connecting block, and a second camera is mounted on the outer surface of the fixing plate. A first motor is matched with a transmission gear and a gear ring to drive a first camera to shoot a workpiece in all directions, a first electric push rod and a second electric push rod are arranged to be matched with a clamping assembly to clamp the workpiece and lift the workpiece upwards, and the bottom of the workpiece is shot through a second camera; therefore, the workpiece to be detected can be detected in all directions without being placed again, and the time required by detection is shortened.

Description

Technical Field

[0001] This utility model relates to the field of workpiece inspection technology, specifically a machine vision inspection device. Background Technology

[0002] Machine vision is a type of inspection equipment equipped with sensing vision instruments, of which optical inspection instruments account for a high proportion. It can be used to detect defects in various products, judge and select objects, or measure dimensions. It is applied to the calibration and positioning of materials in automated production lines. Computer vision is the most industrialized part, mainly used in factory automation testing and the robotics industry.

[0003] Existing machine vision defect detection equipment can only detect the surface and sides of the workpiece during the inspection process because the bottom of the workpiece is placed on the corresponding platform. It cannot detect defects on the bottom, thus reducing the detection range. Furthermore, if the bottom of the workpiece needs to be inspected, it needs to be repositioned, which increases the inspection time and reduces work efficiency. Therefore, a machine vision inspection device is proposed. Utility Model Content

[0004] In view of the shortcomings of the prior art, the present invention provides a machine vision inspection device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a machine vision inspection device, including an inspection table, a side plate fixedly connected to the rear outer surface of the inspection table, a horizontal plate fixedly connected to the outer surface of the side plate, a fixing ring fixedly connected to the outer surface of the horizontal plate, a toothed ring rotatably connected inside the fixing ring, a mounting plate fixedly connected to one side of the inner side of the toothed ring, a first camera fixedly mounted on the outer surface of the mounting plate, a support plate fixedly connected to the right outer surface of the side plate, a connecting shaft rotatably connected to the bottom outer surface of the support plate, a transmission gear fixedly sleeved on the bottom outer surface of the connecting shaft, a first motor fixedly mounted on the top outer surface of the support plate, the output end of the first motor fixedly connected to the connecting shaft, and the transmission gear movably meshing with the outer surface of the toothed ring;

[0006] A first electric push rod is fixedly installed on the bottom outer surface of the horizontal plate. A connecting block is fixedly connected to the output end of the first electric push rod. A second electric push rod is fixedly installed on the front outer surface of the connecting block. A U-shaped frame is fixedly connected to the output end of the second electric push rod. A clamping assembly is provided on the outer surface of the U-shaped frame. A connecting frame is fixedly connected to the front outer surface of the side plate. A fixing plate is fixedly connected to the outer surface of the connecting frame. A second camera is installed on the outer surface of the fixing plate.

[0007] Furthermore, the clamping assembly includes two cylinders, which are respectively installed on the left and right outer surfaces of the U-shaped frame. A connecting plate is fixedly connected to the output end of the cylinder, and a spring is fixedly connected to the outer surface of the connecting plate. A clamping plate is fixedly connected to the other end of the spring. A pressure sensor is fixedly installed on the side of the connecting plate facing the clamping plate, and the pressure sensor is electrically connected to an external controller.

[0008] Furthermore, it also includes a loading platform, which is located to the right of the inspection platform. A rectangular plate is fixedly connected between the loading platform and the inspection platform. A support shaft rotatably passes through the outer surface of the rectangular plate. A second motor is fixedly installed on the bottom outer surface of the rectangular plate. A drive gear is fixedly connected to the output end of the second motor. A driven gear is fixedly sleeved on the outer surface of the support shaft. The outer surfaces of the drive gear and the driven gear are movably meshed. A top plate is fixedly connected to the top outer surface of the support shaft.

[0009] Furthermore, electric suction cups are installed at both ends of the top of the top plate.

[0010] Furthermore, the radius of the transmission gear is smaller than the radius of the gear ring.

[0011] Furthermore, the radius of the driving gear is smaller than the radius of the driven gear.

[0012] Furthermore, two movable rods are movably inserted into the outer surface of the connecting plate, the other end of the movable rods is fixedly connected to the clamping plate, and the spring is sleeved on the outer surface of the movable rods.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This machine vision inspection equipment uses a first motor, a transmission gear, and a gear ring to drive a first camera to capture images of the workpiece from all angles. It also uses a first electric push rod and a second electric push rod, along with a clamping assembly, to clamp and lift the workpiece. The second camera captures images of the bottom of the workpiece. This allows for comprehensive inspection of the workpiece without the need to reposition it, thus shortening the inspection time.

[0015] 2. This machine vision inspection equipment uses a second motor to drive the active gear to rotate, which in turn drives the support shaft to rotate. The support shaft drives the top plate to rotate, transporting uninspected workpieces to the inspection table and moving inspected workpieces to the loading table. This allows for staggered cyclic inspection, improving inspection efficiency. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model from below;

[0018] Figure 3 This is a schematic diagram of the rear view structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the U-shaped frame and related structures of this utility model.

[0020] In the diagram: 1. Detection table; 2. Side plate; 3. Fixing ring; 4. Gear ring; 5. First motor; 6. Connecting shaft; 7. Transmission gear; 8. First camera; 9. First electric push rod; 10. Second electric push rod; 11. U-shaped frame; 12. Connecting frame; 13. Fixing plate; 14. Second camera; 15. Cylinder; 16. Connecting plate; 17. Spring; 18. Clamping plate; 19. Pressure sensor; 20. Loading platform; 21. Support shaft; 22. Top plate; 23. Driven gear; 24. Second motor; 25. Drive gear; 26. Electric suction cup. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1:

[0023] Please refer to the following: Figures 1-4 This utility model provides a technical solution: a machine vision inspection device, including an inspection table 1, a side plate 2 fixedly connected to the rear outer surface of the inspection table 1, a horizontal plate fixedly connected to the outer surface of the side plate 2, a fixing ring 3 fixedly connected to the outer surface of the horizontal plate, a toothed ring 4 rotatably connected inside the fixing ring 3, a mounting plate fixedly connected to one side of the inner side of the toothed ring 4, a first camera 8 fixedly mounted on the outer surface of the mounting plate, a support plate fixedly connected to the right outer surface of the side plate 2, a connecting shaft 6 rotatably connected to the bottom outer surface of the support plate, a transmission gear 7 fixedly sleeved on the bottom outer surface of the connecting shaft 6, a first motor 5 fixedly mounted on the top outer surface of the support plate, the output end of the first motor 5 fixedly connected to the connecting shaft 6, and the transmission gear 7 movably meshing with the outer surface of the toothed ring 4. Specifically, the first motor 5 drives the connecting shaft 6 to rotate, which in turn drives the transmission gear 7 to rotate, and the transmission gear 7 drives the toothed ring 4 to rotate, causing the toothed ring 4 to drive the first camera 8 to rotate around the workpiece in a circular motion, performing all-round imaging and inspection of the workpiece, and inspecting multiple sides of the workpiece.

[0024] A first electric push rod 9 is fixedly installed on the bottom outer surface of the horizontal plate. A connecting block is fixedly connected to the output end of the first electric push rod 9. A second electric push rod 10 is fixedly installed on the front outer surface of the connecting block. A U-shaped frame 11 is fixedly connected to the output end of the second electric push rod 10. A clamping component is provided on the outer surface of the U-shaped frame 11. A connecting frame 12 is fixedly connected to the front outer surface of the side plate 2. A fixing plate 13 is fixedly connected to the outer surface of the connecting frame 12. A second camera 14 is installed on the outer surface of the fixing plate 13. Specifically, the operation is achieved through the first electric push rod 9. The first electric push rod 9 drives the U-shaped frame 11 downwards, and the second electric push rod 10 works to move the U-shaped frame 11 so that the two clamping plates 18 are located on both sides of the workpiece. The workpiece is clamped by the clamping assembly. After the workpiece is clamped, the first electric push rod 9 retracts, lifts the workpiece upwards, and retracts by the second electric push rod 10. The bottom of the workpiece is detected by the second camera 14. Thus, the workpiece can be detected from all angles without repositioning it, thereby shortening the detection time.

[0025] In this embodiment, the clamping assembly includes two cylinders 15, which are respectively installed on the left and right outer surfaces of the U-shaped frame 11. The output end of the cylinder 15 is fixedly connected to a connecting plate 16, and a spring 17 is fixedly connected to the outer surface of the connecting plate 16. The other end of the spring 17 is fixedly connected to a clamping plate 18. A pressure sensor 19 is fixedly installed on the side of the connecting plate 16 facing the clamping plate 18. The pressure sensor 19 is electrically connected to an external controller. Specifically, when the cylinder 15 works, it drives the connecting plate 16 to move, so that the clamping plate 18 clamps the two sides of the workpiece. When the clamping plate 18 contacts the surface of the workpiece, the spring 17 is compressed until the clamping plate 18 contacts the pressure sensor 19, so that the pressure sensor 19 senses a value. When the pressure sensor 19 senses the set value (e.g., 0.5MPa), it sends a signal to the controller, and the controller controls the cylinder 15 to stop working, thereby controlling the clamping force of the workpiece, avoiding excessive clamping force that could damage the workpiece, and avoiding insufficient clamping force that could result in unstable clamping of the workpiece.

[0026] In this embodiment, a loading platform 20 is also included. The loading platform 20 is located to the right of the inspection platform 1. A rectangular plate is fixedly connected between the loading platform 20 and the inspection platform 1. A support shaft 21 is rotatably passed through the outer surface of the rectangular plate. A second motor 24 is fixedly installed on the bottom outer surface of the rectangular plate. The output end of the second motor 24 is fixedly connected to a drive gear 25. A driven gear 23 is fixedly sleeved on the outer surface of the support shaft 21. The outer surfaces of the drive gear 25 and the driven gear 23 are movably meshed. A top plate 22 is fixedly connected to the top outer surface of the support shaft 21. Specifically, through the operation of the second motor 24, the second motor 24 drives the drive gear 25 to rotate. The drive gear 25 drives the driven gear 23 to rotate, causing the support shaft 21 to rotate. The support shaft 21 drives the top plate 22 to rotate, transporting the workpieces that have not been inspected to the inspection platform 1 and moving the workpieces that have been inspected to the loading platform 20, thereby unloading the inspected workpieces. Another workpiece that has not been inspected is positioned above the top plate 22, thereby enabling staggered cyclic inspection and improving the inspection efficiency.

[0027] In this embodiment, electric suction cups 26 are installed at both ends of the top of the top plate 22. Specifically, the workpiece is adsorbed by the electric suction cups 26.

[0028] In this embodiment, the radius of the transmission gear 7 is smaller than the radius of the gear ring 4. Specifically, when the first motor 5 drives the transmission gear 7 to rotate, a reduction ratio is generated between the transmission gear 7 and the gear ring 4, causing the gear ring 4 to rotate slowly.

[0029] In this embodiment, the radius of the driving gear 25 is smaller than the radius of the driven gear 23. Specifically, when the second motor 24 drives the driving gear 25 to rotate, a reduction ratio is generated between the driving gear 25 and the driven gear 23, causing the driven gear 23 to rotate slowly.

[0030] In this embodiment, two movable rods are movably inserted into the outer surface of the connecting plate 16. The other end of the movable rods is fixedly connected to the clamping plate 18. The spring 17 is sleeved on the outer surface of the movable rods. Specifically, when the clamping plate 18 contacts the workpiece, the movable rods move on the surface of the connecting plate 16 as the cylinder 15 works, and the movable rods limit the spring 17 to prevent the spring 17 from tilting.

[0031] Working Principle: During use, this invention performs visual inspection by capturing images of the workpiece using a first camera 8. A first motor 5 drives a connecting shaft 6 to rotate, which in turn drives a transmission gear 7. The transmission gear 7 then drives a gear ring 4, causing the gear ring 4 to rotate and move the first camera 8 in a circular motion around the workpiece, allowing for comprehensive imaging and inspection of multiple sides. After inspection, a first electric push rod 9 moves downwards, driving a U-shaped frame 11. A second electric push rod 10 then moves the U-shaped frame 11, positioning two clamping plates 18 on either side of the workpiece. Finally, a cylinder 15 moves a connecting plate 16, clamping the clamping plates 18 onto both sides of the workpiece. When the clamping plate 18 contacts the surface of the workpiece, the spring 17 is compressed until the clamping plate 18 contacts the pressure sensor 19, causing the pressure sensor 19 to sense a value. When the pressure sensor 19 senses the set value (e.g., 0.5 MPa), it sends a signal to the controller, which then controls the cylinder 15 to stop working. This allows for control of the clamping force on the workpiece, preventing damage from excessive clamping force and ensuring stable clamping of the workpiece from insufficient clamping force. After the workpiece is clamped, the first electric push rod 9 retracts, lifting the workpiece upwards, and then retracts again via the second electric push rod 10. The bottom of the workpiece is then inspected by the second camera 14, allowing for comprehensive inspection of the workpiece without the need to reposition it, thus shortening the inspection time.

[0032] Before inspection, two workpieces are placed on the top plate 22 and attracted by the electric suction cup 26. After one workpiece is inspected, the second motor 24 drives the drive gear 25 to rotate, which in turn drives the driven gear 23 to rotate, causing the support shaft 21 to rotate. The support shaft 21 then drives the top plate 22 to rotate, transporting the uninspected workpiece to the inspection table 1. The inspected workpiece is then moved to the loading table 20 for unloading. The other uninspected workpiece is positioned above the top plate 22, enabling staggered cyclic inspection and improving inspection efficiency.

[0033] The controller is an existing structure, and the control circuit can be implemented by a person skilled in the art through simple programming. It is common knowledge in the field. It is only used and not modified. Therefore, the control method and circuit connection will not be described in detail.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A machine vision inspection device, comprising an inspection table (1), characterized in that: A side plate (2) is fixedly connected to the rear outer surface of the detection platform (1). A horizontal plate is fixedly connected to the outer surface of the side plate (2). A fixing ring (3) is fixedly connected to the outer surface of the horizontal plate. A toothed ring (4) is rotatably connected inside the fixing ring (3). A mounting plate is fixedly connected to one side of the toothed ring (4). A first camera (8) is fixedly mounted on the outer surface of the mounting plate. A support plate is fixedly connected to the right outer surface of the side plate (2). A connecting shaft (6) is rotatably connected to the bottom outer surface of the support plate. A transmission gear (7) is fixedly sleeved on the bottom outer surface of the connecting shaft (6). A first motor (5) is fixedly mounted on the top outer surface of the support plate. The output end of the first motor (5) is fixedly connected to the connecting shaft (6). The transmission gear (7) is movably meshed with the outer surface of the toothed ring (4). A first electric push rod (9) is fixedly installed on the bottom outer surface of the horizontal plate. A connecting block is fixedly connected to the output end of the first electric push rod (9). A second electric push rod (10) is fixedly installed on the front outer surface of the connecting block. A U-shaped frame (11) is fixedly connected to the output end of the second electric push rod (10). A clamping assembly is provided on the outer surface of the U-shaped frame (11). A connecting frame (12) is fixedly connected to the front outer surface of the side plate (2). A fixing plate (13) is fixedly connected to the outer surface of the connecting frame (12). A second camera (14) is installed on the outer surface of the fixing plate (13).

2. The machine vision inspection device according to claim 1, characterized in that: The clamping assembly includes two cylinders (15), which are respectively installed on the left and right outer surfaces of the U-shaped frame (11). The output end of the cylinder (15) is fixedly connected to a connecting plate (16), and a spring (17) is fixedly connected to the outer surface of the connecting plate (16). The other end of the spring (17) is fixedly connected to a clamping plate (18). A pressure sensor (19) is fixedly installed on the side of the connecting plate (16) facing the clamping plate (18). The pressure sensor (19) is electrically connected to an external controller.

3. The machine vision inspection device according to claim 1, characterized in that: It also includes a loading platform (20), which is located to the right of the inspection platform (1). A rectangular plate is fixedly connected between the loading platform (20) and the inspection platform (1). A support shaft (21) is rotatably passed through the outer surface of the rectangular plate. A second motor (24) is fixedly installed on the bottom outer surface of the rectangular plate. The output end of the second motor (24) is fixedly connected to a drive gear (25). A driven gear (23) is fixedly sleeved on the outer surface of the support shaft (21). The drive gear (25) and the driven gear (23) are movably meshed. A top plate (22) is fixedly connected to the top outer surface of the support shaft (21).

4. The machine vision inspection device according to claim 3, characterized in that: Electric suction cups (26) are installed at both ends of the top of the top plate (22).

5. The machine vision inspection device according to claim 1, characterized in that: The radius of the transmission gear (7) is smaller than the radius of the gear ring (4).

6. The machine vision inspection device according to claim 3, characterized in that: The radius of the driving gear (25) is smaller than the radius of the driven gear (23).

7. The machine vision inspection device according to claim 2, characterized in that: Two movable rods are movably inserted into the outer surface of the connecting plate (16), and the other end of the movable rods is fixedly connected to the clamping plate (18). The spring (17) is sleeved on the outer surface of the movable rods.

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