Dual-camera detection device

Abstract

The utility model relates to the technical field of surface defect detection, and provides a double-camera detection device which comprises a three-dimensional moving frame, a fixed seat, an electric turntable and detection cameras, the fixed seat is fixedly arranged on the three-dimensional moving frame, and the relative position of the fixed seat and the three-dimensional moving frame is adjustable; the electric rotary table is fixedly arranged on the fixed seat; the detection camera comprises a first camera and a second camera, the first camera is fixedly arranged on the fixed seat, and the center line of the first camera coincides with a rotating shaft of the electric rotary table; and the second camera is fixedly arranged at the output end of the electric rotary table. According to the utility model, the electric turntable, the first camera and the second camera are arranged, and the electric turntable is utilized to drive the second camera to rotate around the first camera, so that the overall detection field of view of the detection camera is larger than the sum of the detection fields of view of the first camera and the second camera, and the utilization rate of the detection camera in the detection device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of surface defect detection, in particular to a double-camera detection device. Background Technique

[0002] Surface defect detection is an important detection process in workpiece processing. By using a camera to capture the surface image of the workpiece and comparing this image with a database, it can be determined whether there are defects on the surface of the workpiece, realizing the automated operation of workpiece surface defect detection.

[0003] The utility model with the publication number CN213364609U discloses a double-camera detection mechanism, including a camera mounting plate, a light source assembly, a first camera assembly, a second camera assembly, and a base for conveying the object to be measured. Both camera assemblies are high-precision CCD cameras. Using double-camera detection can provide a larger field of view, can detect larger materials, has a large detection range and high speed, improves production efficiency, and saves labor costs. The whole device uses the detection mechanism to replace the human eye for detection, and there will be no problem of visual fatigue caused by too long visual inspection time, thus avoiding the misjudgment and missed detection problems that occur during human eye fatigue detection, improving the accuracy rate. Due to limited angles, employees may not be able to detect product defects due to angles during visual inspection. Now, using automatic image acquisition and recognition by the camera for detection can avoid missed detection due to angles and improve the quality of products.

[0004] In the above technical solution, in order to expand the field of view of the detection mechanism, a first camera assembly and a second camera assembly are set. However, the field of view of the two cameras is only simply accumulated. If it is necessary to further expand the detection field of view of the detection mechanism, the number of camera assemblies needs to be continuously increased, which is not conducive to improving the utilization rate of the camera assemblies in this detection mechanism. Content of the Utility Model

[0005] In view of this, the utility model provides a double-camera detection device, which can expand the detection field of view of the detection device and improve the utilization rate of the detection cameras.

[0006] The technical solution of the utility model is realized as follows: The utility model provides a double-camera detection device, including a three-dimensional moving frame, a fixed seat, an electric turntable, and a detection camera. Among them,

[0007] The fixed seat is fixedly arranged on the three-dimensional moving frame, and their relative positions are adjustable;

[0008] The electric turntable is fixedly arranged on the fixed seat;

[0009] The detection camera includes a first camera and a second camera. The first camera is fixedly arranged on the fixed seat, and its center line coincides with the rotation axis of the electric turntable; the second camera is fixedly arranged on the output end of the electric turntable.

[0010] Based on the above technical solutions, preferably, the electric turntable includes a hollow rotating platform and a fixing frame, wherein,

[0011] The hollow rotating platform is fixedly arranged on the fixed seat;

[0012] One end of the fixing frame is fixedly arranged on the output end of the hollow rotating platform, and the second camera is fixedly arranged at one end of the fixing frame away from the hollow rotating platform in a rotatable manner, and the center line of the second camera is coplanar with the center line of the first camera.

[0013] More preferably, the fixing frame includes a connecting frame and a mounting frame, wherein,

[0014] One end of the connecting frame is fixedly arranged on the output end of the hollow rotating platform, a rotating hole is formed inside it, an opening and closing groove is formed at one end of the connecting frame away from the hollow rotating platform, the opening and closing groove penetrates through both sides of the connecting frame perpendicular to the axis of the rotating hole, and is communicated with the rotating hole;

[0015] One end of the mounting frame is rotatably arranged in the rotating hole, and the other end is fixedly connected with the second camera.

[0016] More preferably, a reinforcing hole is formed through the connecting frame, and the reinforcing hole is communicated with the opening and closing groove.

[0017] More preferably, the fixed seat includes a base and a mounting seat, wherein,

[0018] The base is fixedly arranged on the three-dimensional moving frame and is fixedly connected with the hollow rotating platform;

[0019] The mounting seat is fixedly arranged on the base, penetrates through the hollow rotating platform, and the first camera is fixedly arranged on the mounting seat.

[0020] Based on the above technical solutions, preferably, it further includes an annular lamp, and the annular lamp is fixedly arranged at the front end of the first camera.

[0021] Based on the above technical solutions, preferably, the three-dimensional moving frame includes a first sliding seat, a second sliding seat and a third sliding seat, wherein,

[0022] The second sliding seat is fixedly arranged on the first sliding seat in a slidable manner;

[0023] The third sliding seat is fixedly arranged on the second sliding seat in a slidable manner, and the fixed seat is fixedly arranged on the third sliding seat in a slidable manner. The sliding directions of the second sliding seat, the third sliding seat, and the fixed seat are perpendicular to each other in pairs.

[0024] More preferably, the first sliding seat, the second sliding seat, and the third sliding seat each include a frame, a lead screw, a motor, and a carriage. Among them,

[0025] The lead screw is rotatably arranged on the frame;

[0026] The motor is fixedly arranged on the frame, and its output end is fixedly connected to the lead screw coaxially;

[0027] The carriage is slidably arranged on the frame and is connected to the lead screw through a threaded fit;

[0028] The frame in the second sliding seat is fixedly arranged on the carriage in the first sliding seat, the frame in the third sliding seat is fixedly arranged on the carriage in the second sliding seat, and the fixed seat is fixedly arranged on the carriage in the third sliding seat.

[0029] More preferably, the three-dimensional moving frame further includes a slide rail, which is parallel and spaced from the lead screw in the first sliding seat. One end of the frame in the second sliding seat is fixedly arranged on the carriage in the first sliding seat, and the other end is slidably arranged on the slide rail.

[0030] More preferably, the three-dimensional moving frame further includes two wire routing frames and two drag chains. Among them,

[0031] The two wire routing frames are respectively fixedly arranged above the frame in the first sliding seat and above the frame in the second sliding seat;

[0032] The two drag chains are respectively arranged in the two wire routing frames.

[0033] The dual-camera detection device of the present utility model has the following beneficial effects compared with the prior art:

[0034] (1) By providing an electric turntable, a first camera, and a second camera, and using the electric turntable to drive the second camera to rotate around the first camera, the overall detection field of view of the detection camera is made larger than the sum of the detection fields of view of the first camera and the second camera, thereby improving the utilization rate of the detection camera in this detection device;

[0035] (2) By fixedly installing the second camera on the fixing frame in a rotatable manner and arranging the center line of the second camera to be coplanar with the center line of the first camera, the side of the workpiece can be detected, making the detection visual field range of this detection device more comprehensive.

[0036] (3) By providing a three-dimensional moving frame, the detection camera can be driven to move three-dimensionally, so that the detection camera can be moved to workpieces at different positions. Description of the Drawings

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0038] Figure 1 Is a perspective view of the dual-camera detection device of the present invention;

[0039] Figure 2 Is a perspective view of the detection camera in the dual-camera detection device of the present invention;

[0040] Figure 3 Is a cross-sectional view of the fixing frame in the dual-camera detection device of the present invention;

[0041] Figure 4 Is a perspective view of the three-dimensional moving frame in the dual-camera detection device of the present invention;

[0042] Figure 5 Is a perspective view of the first sliding seat in the dual-camera detection device of the present invention;

[0043] Figure 6 Is a cross-sectional view of the first sliding seat in the dual-camera detection device of the present invention.

[0044] Wherein: 1. Three-dimensional moving frame; 11. First sliding seat; 12. Second sliding seat; 13. Third sliding seat; 14. Slide rail; 15. Cable tray; 16. Drag chain; 111. Frame; 112. Lead screw; 113. Motor; 114. Slide carriage; 2. Fixed seat; 21. Base; 22. Mounting seat; 3. Electric turntable; 31. Hollow rotating platform; 32. Fixing frame; 321. Connecting frame; 322. Mounting frame; 301. Rotating hole; 302. Opening and closing groove; 303. Reinforcing hole; 4. Detection camera; 41. First camera; 42. Second camera; 5. Ring light. Detailed Embodiment

[0045] The following will clearly and completely describe the technical solutions in the present utility model in conjunction with the specific embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0046] As Figure 1-6 shown, the dual-camera detection device of the present utility model includes a three-dimensional moving frame 1, a fixed seat 2, an electric turntable 3, a detection camera 4, and an annular lamp 5.

[0047] Among them, the three-dimensional moving frame 1 is used to carry other components.

[0048] The fixed seat 2 is used to carry the detection camera 4. The fixed seat 2 is fixedly arranged on the three-dimensional moving frame 1, and the relative position between the fixed seat 2 and the three-dimensional moving frame 1 is adjustable. By adjusting their positions, the detection camera 4 can be moved to different positions on the three-dimensional moving frame 1, so as to detect workpieces at different positions.

[0049] The electric turntable 3 is used to carry the second camera 42. The electric turntable 3 is fixedly arranged on the fixed seat 2.

[0050] The detection camera 4 is used to capture the surface image of the workpiece. The detection camera 4 includes a first camera 41 and a second camera 42. The first camera 41 is fixedly arranged on the fixed seat 2, and its center line coincides with the rotation axis of the electric turntable 3, specifically, coincides with the rotation axis of the output end of the electric turntable 3; the second camera 42 is fixedly arranged on the output end of the electric turntable 3. When the electric turntable 3 starts, it can drive the second camera 42 to rotate around the first camera 41, so that the overall detection field of view of the detection camera 4 is larger than the sum of the detection fields of view of the first camera 41 and the second camera 42, thereby improving the utilization rate of the detection camera 4 and reducing the input and maintenance costs of the detection camera 4.

[0051] As Figure 2As shown in the figure, the electric turntable 3 includes a hollow rotating platform 31 and a fixing frame 32. The hollow rotating platform 31 is fixedly arranged on the fixed seat 2. This is prior art and there is a through hole in the middle. One end of the fixing frame 32 is fixedly arranged on the output end of the hollow rotating platform 31. The second camera 42 is fixedly arranged at one end of the fixing frame 32 away from the hollow rotating platform 31 in a rotatable manner, and the center line of the second camera 42 is coplanar with the center line of the first camera 41. The second camera 42 can not only rotate around the first camera 41, but also rotate with the fixing frame 32, so that the front end (i.e., the lens) of the second camera 42 approaches or moves away from the first camera 41, thereby changing the shooting direction of the second camera 42, enabling the detection camera 4 to detect the circumferential side or inner wall of the workpiece, and greatly improving the overall detection field of view of this detection device.

[0052] As a preferred embodiment, the fixing frame 32 includes a connecting frame 321 and a mounting frame 322. One end of the connecting frame 321 is fixedly arranged on the output end of the hollow rotating platform 31, and a rotating hole 301 is formed inside it. One end of the mounting frame 322 is rotatably arranged in the rotating hole 301, and the other end is fixedly connected to the second camera 42. The mounting frame 322 and the rotating hole 301 are in a damped rotation, that is, when no external force is applied to the mounting frame 322, the mounting frame 322 does not rotate with the rotating hole 301. Only when a relatively large external force is applied to the mounting frame 322 can the mounting frame 322 rotate with the rotating hole 301, so as to achieve the effect that the second camera 42 is fixedly arranged on the fixing frame 32 in a rotatable manner.

[0053] In order to achieve the damped rotation of the mounting frame 322 and the rotating hole 301, it is preferably that the inner diameter of the rotating hole 301 is slightly smaller than the outer diameter of the end of the mounting frame 322. An opening and closing groove 302 is formed at one end of the connecting frame 321 away from the hollow rotating platform 31. The opening and closing groove 302 penetrates through both sides of the connecting frame 321 perpendicular to the axis of the rotating hole 301 and is connected to the rotating hole 301. When the end of the mounting frame 322 is inserted into the rotating hole 301, the two side walls in the opening and closing groove 302 are separated by a certain distance, so that the inner wall of the rotating hole 301 applies a relatively large external force to the end of the mounting frame 322, which is beneficial to maintaining the relative position of the mounting frame 322 and the rotating hole 301.

[0054] In order to improve the fixing firmness of the mounting frame 322 and the rotating hole 301 and ensure the detection accuracy of this detection device, a reinforcing hole 303 is formed through the connecting frame 321, and the reinforcing hole 303 is connected to the opening and closing groove 302. By inserting a bolt into the reinforcing hole 303 and holding both sides of the connecting frame 321, the mounting frame 322 and the rotating hole 301 can be firmly fixed together.

[0055] The fixed base 2 includes a base 21 and a mounting base 22. The base 21 is fixedly arranged on the three-dimensional moving frame 1 and is fixedly connected to the hollow rotating platform 31. The mounting base 22 is fixedly arranged on the base 21, penetrates through the hollow rotating platform 31, and the first camera 41 is fixedly arranged on the mounting base 22. As Figure 2 shown, the mounting base 22 is preferably in a round rod shape, so as to better adapt to the hollow rotating platform 31, allowing the second camera 42 to rotate around the first camera 41 in one direction and avoiding interference between the second camera 42 and the first camera 41.

[0056] The annular lamp 5 is used to provide illumination for the detection camera 4. The annular lamp 5 is fixedly arranged at the front end of the first camera 41, making the field of view of the detection camera 4 clearer.

[0057] As Figure 1 and Figure 4 shown, the three-dimensional moving frame 1 includes a first sliding seat 11, a second sliding seat 12, a third sliding seat 13, a slide rail 14, two wire routing frames 15 and two drag chains 16. Among them, the second sliding seat 12 is fixedly arranged on the first sliding seat 11 in a slidable manner; the third sliding seat 13 is fixedly arranged on the second sliding seat 12 in a slidable manner, and the fixed base 2 is fixedly arranged on the third sliding seat 13 in a slidable manner. The sliding directions of the second sliding seat 12, the third sliding seat 13 and the fixed base 2 are perpendicular to each other in pairs, so that the detection camera 4 installed on the fixed base 2 can perform three-dimensional movement.

[0058] As Figure 5 and Figure 6 shown, the first sliding seat 11 includes a frame 111, a lead screw 112, a motor 113 and a sliding frame 114. The lead screw 112 is rotatably arranged on the frame 111; the motor 113 is fixedly arranged on the frame 111, and its output end is coaxially and fixedly connected to the lead screw 112; the sliding frame 114 is slidably arranged on the frame 111 and is in threaded cooperation connection with the lead screw 112. When the motor 113 is started, it can drive the lead screw 112 to rotate, and by using the threaded cooperation between the lead screw 112 and the sliding frame 114 and the sliding connection between the sliding frame 114 and the frame 111, the sliding frame 114 can move along a linear trajectory. When the second sliding seat 12 is fixed on the sliding frame 114, the effect that the second sliding seat 12 is fixedly arranged on the first sliding seat 11 in a slidable manner can be achieved.

[0059] The structures of the second sliding seat 12 and the third sliding seat 13 are preferably the same as that of the first sliding seat 11. The frame 111 in the second sliding seat 12 is fixedly arranged on the sliding frame 114 in the first sliding seat 11, the frame 111 in the third sliding seat 13 is fixedly arranged on the sliding frame 114 in the second sliding seat 12, and the fixed base 2 is fixedly arranged on the sliding frame 114 in the third sliding seat 13, thus realizing the above three-dimensional movement function.

[0060] The travel requirement of the detection camera 4 on the horizontal plane is relatively large. Therefore, the specifications of the first sliding seat 11 and the second sliding seat 12 are relatively large. The first sliding seat 11 can be directly fixed to the ground, so that the slide rail 14 is parallel and spaced from the lead screw 112 in the first sliding seat 11, and the slide rail 14 is also fixed to the ground. One end of the frame 111 in the second sliding seat 12 is fixedly arranged on the carriage 114 in the first sliding seat 11, and the other end is slidably arranged on the slide rail 14, so that the second sliding seat 12 can move stably and avoid imbalance.

[0061] Two cable trays 15 are respectively fixedly arranged above the frame 111 in the first sliding seat 11 and above the frame 111 in the second sliding seat 12; two cable carriers 16 are respectively arranged in the two cable trays 15 and are respectively fixed to the cables of the motors 113 in the second sliding seat 12 and the third sliding seat 13, so as to avoid damage to the cables during the movement process and improve the protection effect of the detection device.

[0062] The usage method of the double-camera detection device of the present utility model is as follows:

[0063] First, use the control of multiple motors 113 to move the detection camera 4 above the workpiece to be detected, then adjust the installation angle of the second camera 42 relative to the first camera 41, and finally start the hollow rotary table 31 to drive the second camera 42 to rotate around the first camera 41 to detect the surface defects of the workpiece.

[0064] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A dual-camera detection device, characterized in that: It includes a three-dimensional moving frame (1), a fixed base (2), an electric turntable (3) and a detection camera (4). Among them, the fixed base (2) is fixedly arranged on the three-dimensional moving frame (1), and their relative positions are adjustable; the electric turntable (3) is fixedly arranged on the fixed base (2); the detection camera (4) includes a first camera (41) and a second camera (42). The first camera (41) is fixedly arranged on the fixed base (2), and its center line coincides with the rotation axis of the electric turntable (3); the second camera (42) is fixedly arranged on the output end of the electric turntable (3).

2. The dual-camera detection device according to claim 1, wherein: The electric turntable (3) includes a hollow rotating platform (31) and a fixing frame (32). Among them, the hollow rotating platform (31) is fixedly arranged on the fixed base (2); one end of the fixing frame (32) is fixedly arranged on the output end of the hollow rotating platform (31), and the second camera (42) is fixedly arranged at the end of the fixing frame (32) away from the hollow rotating platform (31) in a rotatable manner, and the center line of the second camera (42) is coplanar with the center line of the first camera (41).

3. The dual-camera detection device according to claim 2, characterized in that: The fixing frame (32) includes a connecting frame (321) and a mounting frame (322). Among them, one end of the connecting frame (321) is fixedly arranged on the output end of the hollow rotating platform (31), a rotating hole (301) is opened inside it, an opening and closing groove (302) is opened at the end of the connecting frame (321) away from the hollow rotating platform (31), the opening and closing groove (302) penetrates to both sides of the connecting frame (321) perpendicular to the axis of the rotating hole (301), and is communicated with the rotating hole (301); one end of the mounting frame (322) is rotatably arranged in the rotating hole (301), and the other end is fixedly connected with the second camera (42).

4. The dual-camera detection device according to claim 3, wherein: A reinforcing hole (303) is penetrated and opened on the connecting frame (321), and the reinforcing hole (303) is communicated with the opening and closing groove (302).

5. The dual-camera detection device according to claim 2, wherein: The fixed base (2) includes a base (21) and a mounting base (22). Among them, the base (21) is fixedly arranged on the three-dimensional moving frame (1) and is fixedly connected with the hollow rotating platform (31); the mounting base (22) is fixedly arranged on the base (21), penetrates through the hollow rotating platform (31), and the first camera (41) is fixedly arranged on the mounting base (22).

6. The dual-camera detection device according to claim 1, characterized in that: It also includes an annular lamp (5), and the annular lamp (5) is fixedly arranged at the front end of the first camera (41).

7. The dual-camera detection device according to claim 1, characterized in that: The three-dimensional moving frame (1) includes a first sliding seat (11), a second sliding seat (12) and a third sliding seat (13). Among them, the second sliding seat (12) is fixedly arranged on the first sliding seat (11) in a slidable manner; The third sliding seat (13) is fixedly arranged on the second sliding seat (12) in a slidable manner, and the fixed seat (2) is fixedly arranged on the third sliding seat (13) in a slidable manner. The sliding directions of the second sliding seat (12), the third sliding seat (13) and the fixed seat (2) are perpendicular to each other in pairs.

8. The dual-camera detection device according to claim 7, wherein: The first sliding seat (11), the second sliding seat (12) and the third sliding seat (13) all include a frame (111), a lead screw (112), a motor (113) and a carriage (114), wherein, The lead screw (112) is rotatably arranged on the frame (111); The motor (113) is fixedly arranged on the frame (111), and its output end is fixedly connected to the lead screw (112) coaxially; The carriage (114) is slidably arranged on the frame (111) and is connected to the lead screw (112) through a threaded fit; The frame (111) in the second sliding seat (12) is fixedly arranged on the carriage (114) in the first sliding seat (11), the frame (111) in the third sliding seat (13) is fixedly arranged on the carriage (114) in the second sliding seat (12), and the fixed seat (2) is fixedly arranged on the carriage (114) in the third sliding seat (13).

9. The dual-camera detection device according to claim 8, wherein: The three-dimensional moving frame (1) further includes a slide rail (14). The slide rail (14) is parallel and spaced from the lead screw (112) in the first sliding seat (11). One end of the frame (111) in the second sliding seat (12) is fixedly arranged on the carriage (114) in the first sliding seat (11), and the other end is slidably arranged on the slide rail (14).

10. The dual-camera detection device according to claim 9, characterized in that: The three-dimensional moving frame (1) further includes two wire routing frames (15) and two drag chains (16), wherein, The two wire routing frames (15) are respectively fixedly arranged above the frame (111) in the first sliding seat (11) and above the frame (111) in the second sliding seat (12); The two drag chains (16) are respectively arranged in the two wire routing frames (15).

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