Novel visual inspection counting device and use method thereof

Abstract

The invention relates to a novel visual inspection counting device and a use method thereof, the visual inspection counting device comprises a camera, a light source and a conveying mechanism, the conveying mechanism comprises a transmission structure and a conveyor belt, the conveyor belt is wound on the transmission structure, and a light absorption material is attached to the conveyor belt; the light source is located above the conveying belt, and the camera is located above the conveying belt so as to detect and count materials on the conveying belt. According to the invention, light absorption is realized, a light reflection phenomenon and incapability of collecting transparent materials are avoided, and the imaging effect is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of workpiece visual sorting machinery, and in particular to a novel visual detection and counting device and a use method thereof. Background Art

[0002] With the rapid development of science and technology, researchers have gradually deepened their research on visual inspection of materials such as granules, sheets, capsules, toy blocks, etc., and increasingly use light sources and cameras to collect images of material contours, shapes, sizes and other data, and then process the images through computers.

[0003] For example, the patent document with patent application number 2023205907096 discloses a two-in-one sorting and unloading device suitable for unloading dual materials, including a visual inspection platform, which includes a conveyor belt and a camera. The conveyor belt is a light-transmitting material, and the conveyor belt is built with a light source board. The light of the light source board passes through the conveyor belt to form a backlight source, so that the camera can capture images of the materials on the conveyor belt. However, the backlight source formed by the light of the light source board through the conveyor belt is difficult to adjust, and reflections often occur, affecting the imaging effect of the material; and if the material is transparent, the camera cannot capture its image under the illumination of the backlight source. Summary of the invention

[0004] In view of the existing problems, the present invention proposes a novel visual detection and counting device and a method of using the same, which can absorb light, avoid reflection and the inability to collect transparent materials, and effectively improve the imaging effect.

[0005] The technical solution of the present invention is achieved in this way:

[0006] A novel visual inspection and counting device comprises a camera, a light source and a conveying mechanism. The conveying mechanism comprises a transmission structure and a conveyor belt. The conveyor belt is wound around the transmission structure and light-absorbing material is attached to the conveyor belt. The light source is located above the conveyor belt and the camera is located above the conveyor belt to inspect and count the materials on the conveyor belt.

[0007] Preferably, the light absorbing material is black fluff.

[0008] Preferably, the width illuminated by the light source is greater than the width of the conveyor belt.

[0009] Preferably, an adhesive layer is provided on the conveyor belt, and the black fluff is fixed on the adhesive layer.

[0010] Preferably, the transmission structure includes side plates, a driving wheel structure and a driven wheel structure distributed on both sides. The driving wheel structure and the driven wheel structure are located between the side plates and are respectively located at the front and rear ends of the side plates. The conveyor belt is wound around the driving wheel structure and the driven wheel structure.

[0011] Preferably, the visual detection and counting device further comprises a frame, on which a camera frame is provided, the camera and the light source are respectively fixed to the camera frame via fixing plates, and the conveying mechanism is fixed to the frame.

[0012] Preferably, the camera and the light source are fixed on the camera frame via a fixing plate so as to be adjustable leftward and rightward.

[0013] The present invention also provides a method for using the visual detection and counting device, which comprises the following steps:

[0014] S1: First, black flock is attached to the conveyor belt through flocking process;

[0015] S2: Winding the conveyor belt around the transmission structure;

[0016] S3: Then place the light source above the conveyor belt; place the camera above the conveyor belt;

[0017] S4: Start the transmission structure, and the material is transported on the conveyor belt;

[0018] S5: The light from the light source is irradiated onto the material on the conveyor belt; the black fluff of the conveyor belt absorbs the light and the material surface reflects the light, forming a dark contrast between the material and its surroundings, so that the outline of the material is clearly displayed, the camera collects the image of the outline, and the collected image is judged and processed by the computer.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] In the present invention, light-absorbing materials are attached to the conveyor belt; the light source is located above the conveyor belt, and the camera is located above the conveyor belt. The material is transported on the conveyor belt. Under the irradiation of the light source, the light is absorbed by the light-absorbing material on the conveyor belt and reflected by the surface of the material. A dark contrast is formed between the material and the surrounding environment, so that the contour shape of the material is detected by the camera and clearly imaged on the computer display screen, thereby avoiding reflection and effectively improving the imaging effect. It is also suitable for detecting transparent materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a schematic diagram of the visual detection counting device of the present invention;

[0023] Figure 2A top view of the conveying mechanism of the present invention;

[0024] Figure 3 for Figure 2 Middle AA section;

[0025] Figure 4 It is a schematic diagram of the flocking of the conveyor belt in the present invention;

[0026] Figure 5 It is a schematic diagram of the visual detection and counting device of the present invention applied to a vibration plate feeding machine.

[0027] Figure ID:

[0028] 1. Camera; 2. Light source; 3. Conveying mechanism; 4. Transmission structure; 41. Side panel; 42. Driving wheel structure; 43. Driven wheel structure; 5. Conveyor belt; 6. Light-absorbing material; 7. Adhesive layer; 8. Frame; 9. Camera frame. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figures 1 to 5The figure shows a novel visual inspection and counting device provided by the present invention, which includes a camera 1, a light source 2 and a conveying mechanism 3. The conveying mechanism 3 includes a transmission structure 4 and a conveyor belt 5. The conveyor belt 5 is wound around the transmission structure 4. The transmission structure 4 can drive the conveyor belt 5 to rotate, and the material is conveyed to the next process along the conveyor belt 5.

[0033] The conveyor belt 5 is provided with a light-absorbing material 6, which can absorb light. The light source 2 is located above the conveyor belt 5, and the camera 1 is also located above the conveyor belt 5. In this embodiment, the camera 1 is embedded in the middle of the light source 2. When the material is transported to the bottom of the camera 1 through the conveyor belt 5, under the illumination of the light source 2, the light is absorbed by the light-absorbing material 6 on the conveyor belt 5 and reflected by the surface of the material, so that the material forms a dark contrast with the surrounding environment, so that the outline shape of the material is clearly displayed, and the same is true for transparent materials. The camera 1 can collect a clear outline shape, and then judge and process the collected image data through a computer, so as to realize the detection and counting of the material.

[0034] The use of the light-absorbing material 6 of the present invention can reduce diffuse light, avoid reflection during visual inspection and affect inspection, and improve subject contrast, effectively enhance contour imaging effect, facilitate visual inspection, and thus improve inspection accuracy;

[0035] In addition, the light source 2 can adopt a flat light source lamp or a ring light source lamp with a large illumination range, and the emitted light is more uniform and comprehensive, so that the imaging effect of the material located below the light source 2 at any width position on the conveyor belt 5 is consistent, which is beneficial to improve the visual inspection effect.

[0036] Furthermore, the light-absorbing material 6 on the conveyor belt 5 is black fluff, which can effectively reduce diffuse light and has an excellent light-absorbing effect, thereby improving the imaging quality and being more conducive to visual inspection of materials.

[0037] Furthermore, if Figure 1 and Figure 5 As shown, the width of the light source 2 is greater than the width of the conveyor belt 5, so that the camera 1 can perform visual inspection of the materials on the conveyor belt 5 in all directions without blind spots.

[0038] Furthermore, if Figure 4 As shown, an adhesive layer 7 is provided on the conveyor belt 5, and black fluff is fixed on the adhesive layer 7 by adopting a flocking process. The flocking process makes the density of the black fluff high, which greatly improves the light absorption effect.

[0039] Furthermore, if Figure 2 and Figure 3As shown, the transmission structure 4 includes side plates 41, a driving wheel structure 42 and a driven wheel structure 43 distributed on both sides. The side plates 41 on both sides are connected by an intermediate plate. The driving wheel structure 42 and the driven wheel structure 43 are located between the side plates 41 on both sides and are respectively located at the front and rear ends of the side plates 41 on both sides. The conveyor belt 5 is wound around the driving wheel structure 42 and the driven wheel structure 43. The driving wheel structure 42 is connected to the driving mechanism, and the driving mechanism drives the driving wheel structure 42 to rotate, thereby driving the conveyor belt 5 and the driven wheel structure 43 to rotate, thereby realizing the transportation of materials.

[0040] Furthermore, if Figure 1 As shown, the visual detection and counting device also includes a frame 8, on which a camera frame 9 is provided, a camera 1 and a light source 2 are respectively fixed to the camera frame 9 through fixing plates, and a conveying mechanism 3 is fixed to the frame 8.

[0041] Furthermore, a profile is used where the camera holder 9 is connected to the fixed plate, and the fixed plate can be adjusted left and right on the profile. The other end of the fixed plate is respectively connected to the camera 1 and the light source 2, so that the camera 1 and the light source 2 can be adjusted left and right according to the actual size and position of the conveyor belt 5.

[0042] The present invention also provides a method for using the visual detection and counting device, which comprises the following steps:

[0043] S1: First, black fluff is adhered to the conveyor belt 5 by flocking process, so that the density of the fluff on the surface of the conveyor belt 5 is high, thereby improving the light absorption effect;

[0044] S2: Winding the conveyor belt 5 around the transmission structure 4;

[0045] S3: Then place the light source 2 above the conveyor belt 5; place the camera 1 above the conveyor belt 5;

[0046] S4: starting the transmission structure 4, and the material is transported on the conveyor belt 5;

[0047] S5: When the material is conveyed to the detection area of ​​camera 1, the light from light source 2 shines on the material on conveyor belt 5; through the absorption of light by the black fluff of conveyor belt 5 and the reflection of light by the surface of the material, the material forms a dark contrast with its surroundings, so that the outline shape of the material is clearly displayed, and camera 1 collects images of the outline shape and judges and processes the collected images through a computer.

[0048] To sum up, in the present invention, flocking is provided on the conveyor belt 5; the light source 2 is located above the conveyor belt 5, and the camera 1 is located above the conveyor belt 5. The material is transported on the conveyor belt 5. Under the illumination of the light source 2, the black fluff on the conveyor belt 5 absorbs light and the surface of the material reflects light, so that a dark contrast is formed between the material and the surrounding environment, so that the contour shape of the material is detected by the camera 1 and is clearly imaged on the display screen, thereby avoiding reflection and effectively improving the imaging effect. It is also suitable for detecting transparent materials.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A new type of visual detection and counting device, characterized in that: The invention comprises a camera (1), a light source (2) and a conveying mechanism (3), wherein the conveying mechanism (3) comprises a transmission structure (4) and a conveyor belt (5), wherein the conveyor belt (5) is wound around the transmission structure (4), and a light-absorbing material (6) is attached to the conveyor belt (5); the light source (2) is located above the conveyor belt (5), and the camera (1) is located above the conveyor belt (5) to detect and count the materials on the conveyor belt (5).

2. The novel visual detection and counting device according to claim 1 is characterized in that: The light absorbing material (6) is black fluff.

3. The novel visual detection and counting device according to claim 1 is characterized in that: The width illuminated by the light source (2) is greater than the width of the conveyor belt (5).

4. The novel visual detection and counting device according to claim 2 is characterized in that: An adhesive layer (7) is provided on the conveyor belt (5), and the black fluff is fixed on the adhesive layer (7).

5. The novel visual detection and counting device according to claim 1 is characterized in that: The transmission structure (4) comprises side plates (41) distributed on both sides, a driving wheel structure (42) and a driven wheel structure (43); the driving wheel structure (42) and the driven wheel structure (43) are located between the side plates (41) on both sides and are respectively located at the front and rear ends of the side plates (41) on both sides; the conveyor belt (5) is wound around the driving wheel structure (42) and the driven wheel structure (43).

6. The novel visual detection and counting device according to claim 1 is characterized in that: It also comprises a frame (8), on which a camera frame (9) is arranged, the camera (1) and the light source (2) are respectively fixed on the camera frame (9) via fixing plates, and the conveying mechanism (3) is fixed on the frame (8).

7. The novel visual detection and counting device according to claim 6 is characterized in that: The camera (1) and the light source (2) are fixed on the camera frame (9) via a fixing plate so as to be adjustable leftward and rightward.

8. The method for using the visual detection and counting device according to any one of claims 1 to 7, characterized in that: The method of use includes the following steps: S1: firstly, black fluff is adhered to the conveyor belt (5) by flocking process; S2: Winding the conveyor belt (5) around the transmission structure (4); S3: Then, the light source (2) is placed above the conveyor belt (5); and the camera (1) is placed above the conveyor belt (5); S4: starting the transmission structure (4), and the material is transported on the conveyor belt (5); S5: The light from the light source (2) is irradiated onto the material on the conveyor belt (5); the black fluff of the conveyor belt (5) absorbs the light and the surface of the material reflects the light, forming a dark contrast between the material and its surroundings, so that the contour shape of the material is clearly displayed, the camera (1) collects an image of the contour shape, and the collected image is judged and processed by a computer.

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