Machine vision industrial raw material screening device with adjustable light source

Abstract

The utility model belongs to screening device technical field discloses a kind of machine vision industrial raw material screening devices with adjustable light source, including the conveying belt for conveying industrial raw material, the conveying belt is equipped with two groups of rotating mechanism, two groups of rotating mechanism are adjacent installation, the working end of two groups the rotating mechanism is equipped with adjusting mechanism, the output end of one the adjusting mechanism is equipped with light source, the output end of another the adjusting mechanism is equipped with camera, the utility model can adjust the position of light source and camera by rotating mechanism, and then ensure that light source does not cause influence to the data acquisition of camera under specific condition;By parameter and program control, realize the adjustment of automation, and the efficiency and detection accuracy of full-automatic detection are guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of screening device technology, specifically relating to a machine vision industrial raw material screening device with adjustable light source. Background Technology

[0002] In the industrial production sector, rapid and accurate screening of industrial raw materials is a crucial step in ensuring the quality and efficiency of subsequent production. Traditional raw material screening methods rely heavily on manual visual identification, which is not only labor-intensive and inefficient, but also susceptible to subjective factors such as operator experience and fatigue, making it difficult to guarantee screening accuracy. This is especially true when handling raw materials with subtle differences in appearance or in large batches, where missed or false detections are highly likely.

[0003] With the development of machine vision technology, automated screening equipment based on image recognition is gradually being applied in industrial scenarios. It uses cameras to capture images of raw materials and combines them with algorithms to perform screening, greatly improving efficiency and consistency. However, the light source systems of existing machine vision screening devices are mostly designed with fixed parameters, which can only adapt to the inspection of raw materials under specific lighting conditions.

[0004] In actual production, there are significant differences in the material, surface condition (such as smooth, rough, reflective) and type of defects to be detected (such as dents, stains, abnormal textures) of industrial raw materials. Fixed light sources often cannot provide the best imaging effect. For example, strong light may cause overexposure of images of reflective raw materials, while weak light may make it difficult to identify subtle defects of dark raw materials, thereby affecting the accuracy of image recognition algorithms and limiting the equipment's adaptability to raw materials of multiple categories and defect types. Utility Model Content

[0005] In view of the problems mentioned above in the background art, the purpose of this utility model is to provide a machine vision industrial raw material screening device with adjustable light source.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0007] A machine vision industrial raw material screening device with adjustable light source includes a conveyor belt for conveying industrial raw materials. The conveyor belt is equipped with two sets of rotating mechanisms, which are installed adjacent to each other. An adjustment mechanism is installed at the working end of each set of rotating mechanisms. A light source is installed at the output end of one adjustment mechanism, and a camera is installed at the output end of the other adjustment mechanism.

[0008] The rotating mechanism includes a mounting frame, on which a motor and a ring are fixedly mounted. A bearing is mounted on the ring, and a gear ring is mounted on the outer ring of the bearing. A gear is mounted on the output end of the motor, and the gear meshes with the gear ring. The gear ring has a groove, and a conductive ring is mounted in the groove. A conductive brush with its end in contact with the conductive ring is mounted on the ring.

[0009] The adjustment mechanism includes a mounting plate installed on the gear ring, the mounting plate having a wiring port, an electric push rod mounted on the mounting plate, and a movable plate connected to the output end of the electric push rod.

[0010] Further specifying, the movable plate on which the light source is mounted is equipped with a damping bearing, the inner ring of the damping bearing is equipped with a hinge joint, and the light source is mounted on the hinge joint.

[0011] Furthermore, a protective structure is installed on the outer side of the gear, and the protective structure does not interfere with the rotation of the gear ring.

[0012] Furthermore, the circular ring is fixedly equipped with a retaining ring.

[0013] Further, the mounting bracket is provided with a sliding groove, the sliding groove is provided with a plurality of mounting holes, a motor bracket is fixedly mounted on the sliding groove through the mounting holes, and the motor is mounted on the motor bracket.

[0014] The beneficial effects of using this utility model are as follows:

[0015] This invention uses a rotating mechanism to adjust the positions of the light source and the camera, thereby ensuring that, under certain circumstances, the light source will not affect the data acquisition of the camera.

[0016] This invention achieves automated adjustment through parameter and program control, exhibiting high intelligence and ensuring efficiency and accuracy through fully automated detection. Attached Figure Description

[0017] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the machine vision industrial raw material screening device with adjustable light source according to this utility model.

[0019] Figure 2 This is a partial cross-sectional structural schematic diagram of an embodiment of a machine vision industrial raw material screening device with adjustable light source according to this utility model.

[0020] Figure 3 This is a schematic diagram of the toothed ring structure of an embodiment of the machine vision industrial raw material screening device with adjustable light source of this utility model.

[0021] Figure 4 for Figure 1 Enlarged structural diagram at point A in the middle;

[0022] Figure 5 for Figure 1 Enlarged structural diagram at point B;

[0023] The symbols for the main components are explained below:

[0024] 1. Conveyor belt; 2. Rotating mechanism; 3. Adjusting mechanism; 4. Light source; 5. Camera; 6. Damping bearing; 7. Hinge joint; 8. Retaining ring;

[0025] Mounting bracket 21; Motor 22; Ring 23; Bearing 24; Gear ring 25; Gear 26; Groove 27; Conductive ring 28; Conductive brush 29; Slide groove 211; Mounting hole 212; Motor bracket 213;

[0026] Mounting plate 31; wiring port 32; electric push rod 33; moving plate 34. Detailed Implementation

[0027] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments. Example

[0028] like Figures 1-5 As shown, the present invention provides a machine vision industrial raw material screening device with adjustable light source, including a conveyor belt 1 for conveying industrial raw materials, two sets of rotating mechanisms 2 installed on the conveyor belt 1, the two sets of rotating mechanisms 2 being installed adjacent to each other, and an adjustment mechanism 3 installed at the working end of each set of rotating mechanisms 2, a light source 4 installed at the output end of one adjustment mechanism 3, and a camera 5 installed at the output end of the other adjustment mechanism 3.

[0029] The rotating mechanism 2 includes a mounting frame 21, on which a motor 22 and a ring 23 are fixedly mounted. A bearing 24 is mounted on the ring 23, and a gear ring 25 is mounted on the outer ring of the bearing 24. A gear 26 is mounted on the output end of the motor 22, and the gear 26 meshes with the gear ring 25. When the motor 22 runs, it drives the gear ring 25 to rotate. The gear ring 25 has a groove 27, and a conductive ring 28 is installed in the groove 27. A conductive brush 29 with its end in contact with the conductive ring 28 is mounted on the ring 23. When the conductive brush 29 is electrically connected to the power supply, the conductive ring 28 is energized.

[0030] The adjustment mechanism 3 includes a mounting plate 31 installed on the gear ring 25. The mounting plate 31 is provided with a wiring port 32, which is electrically connected to the conductive ring 28. An electric push rod 33 is installed on the mounting plate 31, which is electrically connected to the wiring port 32. A movable plate 34 is connected to the output end of the electric push rod 33.

[0031] The light source 4 and the camera 5 are mounted on the corresponding movable plate 34, and both the light source 4 and the camera 5 are electrically connected to the wiring port 32.

[0032] In this implementation case, both the light source and the camera are existing technologies that can be directly purchased. The camera models include, but are not limited to, Hikvision MV-CA050-10GC and Daheng Image DH-CE60000M.

[0033] Industrial raw materials are discharged onto conveyor belt 1 from the previous process. It should be emphasized and understood by those in the relevant field that the discharge speed of the raw materials is adapted to the conveying speed of conveyor belt 1 and the working frequency of the subsequent light source 4 and camera 5.

[0034] When the raw material is moved to the light source 4 and the camera 5, because the two are adjacent, the camera 5 can acquire data in the light source area. According to the data feedback from the camera 5, when there are problems such as reflection, the position of the light source 4 is adjusted. In summary, when the result is affected by the position of the light source 4, the light source 4 can be adjusted to eliminate the problem. This point is not difficult for technicians in related fields to understand.

[0035] The adjustment method of the light source 4 is as follows: the motor 22 is controlled to drive the gear 26 to rotate, and the gear ring 25 meshing with the gear 26 rotates. Then the adjustment mechanism 3 installed on the gear ring 25 rotates, realizing the change of angle in the direction of the axis of the gear ring 25, that is, realizing the adjustment of the lighting angle. With the cooperation of the conductive brush 29, the conductive ring 28 and the wiring port 32, the rotation of the gear ring 25 will not interfere with the power supply. Furthermore, the electric push rod 33 is controlled to drive the moving plate 34 to move, which can realize the change of the height position of the light source 4, so that the light source is further away from or closer to the raw material, thereby increasing the adaptability of the light source 4.

[0036] Furthermore, based on the same principle, the angle and distance of camera 5 can also be adjusted using the raw materials as a reference, thereby ensuring the accuracy of data acquisition.

[0037] To further clarify, the parameter settings and program control in automated equipment need to be adjusted according to the actual situation, and technical personnel in the relevant fields will not use this as a reason to consider the structure as not working. Example

[0038] like Figure 3 As shown, a damping bearing 6 is installed on the movable plate 34 on which the light source 4 is installed, and a hinge joint 7 is installed on the inner ring of the damping bearing 6. The light source 4 is installed on the hinge joint 7.

[0039] In this implementation, the outer ring of the damping bearing 6 is fixedly mounted on the moving plate 34 with an interference fit, while its inner ring is rigidly fixed to one end of the hinge joint 7 via a threaded connection or welding. The base of the light source 4 is detachably mounted on the other end of the hinge joint 7 via a bolt assembly. With this structure, the operator can directly turn the light source 4 to drive the hinge joint 7 to rotate around the inner ring of the damping bearing 6, thereby achieving stepless adjustment of the light source illumination angle within the range of 0 to 90°. The friction damping characteristics of the damping bearing 6 ensure that the light source 4 is stably positioned at any adjustment angle, avoiding angle deviation caused by equipment vibration or material conveying impact. This makes the adjustment highly flexible and can quickly adapt to the illumination requirements of different materials. Moreover, the structure has high stability, and the rigid connection between the damping bearing and the hinge joint ensures the installation accuracy of the light source in a high-frequency vibration environment. Furthermore, the operation is convenient, and angle fine-tuning can be completed without additional tools, significantly shortening the equipment debugging time when switching between multiple types of materials. Example

[0040] As not shown in the figure, a protective structure is installed on the outside of the gear 26, which does not interfere with the rotation of the gear ring 25.

[0041] In this implementation case, the protective structure protects, but is not limited to, the use of a U-shaped protective cover. Its opening faces the meshing area of ​​the gear ring 25 and gear 26. The inner side of the protective cover is fixed to the mounting bracket 21 with bolts, and the inner wall of the protective cover maintains a rotatable gap with the outer tooth surface of the gear 26. Simultaneously, the top of the protective cover extends to below the outer edge of the gear ring 25, with a rounded transition at the edge. The protective cover only covers the outer portion of the gear 26 that is not meshing with the gear ring 25. Its opening size and position precisely avoid the rotation trajectory of the gear ring 25, ensuring that the gear ring 25 does not contact the protective structure during 360° rotation. This protective structure effectively prevents dust, oil, and raw material debris from the production environment from entering the gear meshing area, reducing wear and jamming risks. Secondly, it ensures interference-free operation; by reserving a reasonable gap and optimizing the opening design, it does not affect the normal meshing transmission of the gear ring 25 and gear 26. Thirdly, it facilitates maintenance; the protective cover adopts a detachable structure, making it easy to periodically inspect and lubricate the gears, extending the service life of the equipment. Example

[0042] like Figure 1 As shown, a retaining ring 8 is fixedly installed on the circular ring 23.

[0043] In this implementation, the retaining ring 8 is made of metal and has an inner diameter that matches the outer diameter of the ring 23. The two are fixedly connected by countersunk bolts evenly distributed around the circumference of the retaining ring 8 or by welding. It should be noted that the weld must be deburred to prevent it from affecting the rotation of the bearing 24. The retaining ring 8 forms a stepped blocking structure to prevent the bearing 24 from coming off. The blocking effect is significant and can effectively intercept raw material debris, oil stains and other impurities splashed during the production process, preventing them from entering the ring 23 and causing friction with the bearing 24, thus reducing wear. Example

[0044] like Figure 2 As shown, the mounting bracket 21 is provided with a sliding groove 211, and the sliding groove 211 is provided with a plurality of mounting holes 212. The motor bracket 213 is fixedly mounted on the sliding groove 211 through the mounting holes 212, and the motor 22 is mounted on the motor bracket 213.

[0045] In this embodiment, the slide groove 211 of the mounting bracket 21 adopts a rectangular through-slot structure, which is opened along the length of the mounting bracket 21, and several mounting holes 212 are evenly distributed in the slide groove 211. During installation, the bottom slider of the motor bracket 213 is embedded in the slide groove 211, and slid to the target position according to the alignment requirements of the motor 22 and the transmission components. Then, it is fixed by fastening bolts that pass through the motor bracket 213 and the corresponding mounting holes 212. This makes the adjustment convenient. Through the cooperation of the slide groove 211 and multiple sets of mounting holes 212, it can adapt to different motor specifications and different sizes of gears 26. That is, when the gear ratio needs to be adjusted, it can assist in the installation and adjustment.

[0046] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A machine vision industrial raw material screening device with adjustable light source, comprising a conveyor belt (1) for conveying industrial raw materials, characterized in that: The conveyor belt (1) is equipped with two sets of rotating mechanisms (2), which are installed adjacent to each other. The working ends of the two sets of rotating mechanisms (2) are equipped with adjustment mechanisms (3). The output end of one adjustment mechanism (3) is equipped with a light source (4), and the output end of the other adjustment mechanism (3) is equipped with a camera (5). The rotating mechanism (2) includes a mounting frame (21), on which a motor (22) and a ring (23) are fixedly mounted. A bearing (24) is mounted on the ring (23), and a gear ring (25) is mounted on the outer ring of the bearing (24). A gear (26) is mounted on the output end of the motor (22), and the gear (26) meshes with the gear ring (25). The gear ring (25) has a groove (27), and a conductive ring (28) is mounted in the groove (27). A conductive brush (29) with its end in contact with the conductive ring (28) is mounted on the ring (23). The adjustment mechanism (3) includes a mounting plate (31) installed on the gear ring (25), the mounting plate (31) is provided with a wiring port (32), the mounting plate (31) is equipped with an electric push rod (33), and the output end of the electric push rod (33) is connected to a moving plate (34).

2. The machine vision industrial raw material screening device with adjustable light source according to claim 1, characterized in that: The movable plate (34) on which the light source (4) is mounted is equipped with a damping bearing (6), and the inner ring of the damping bearing (6) is equipped with a hinge joint (7), and the light source (4) is mounted on the hinge joint (7).

3. The machine vision industrial raw material screening device with adjustable light source according to claim 2, characterized in that: A protective structure is installed on the outside of the gear (26), and the protective structure does not interfere with the rotation of the gear ring (25).

4. The machine vision industrial raw material screening device with adjustable light source according to claim 3, characterized in that: The ring (23) is fixedly fitted with a retaining ring (8).

5. The machine vision industrial raw material screening device with adjustable light source according to claim 4, characterized in that: The mounting bracket (21) is provided with a sliding groove (211), the sliding groove (211) is provided with a plurality of mounting holes (212), the sliding groove (211) is fixedly mounted with a motor bracket (213) through the mounting holes (212), and the motor (22) is mounted on the motor bracket (213).

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