Single-camera detection device for detecting paint peeling on upper surface of container

Abstract

The utility model discloses a single-camera detection device for detecting paint peeling on the upper surface of a container. The single-camera detection device comprises a surface light source, the input end of the area light source is electrically connected with the output end of the additionally-arranged visual detection system, a middle hole is formed in the middle of the area light source, a camera is arranged on the upper portion of the area light source, a lens of the camera is arranged in the middle hole, the camera is electrically connected with the additionally-arranged visual detection system, and a glass bottle is placed below the area light source; according to the device, the camera and the area light source are combined, the light transmission and reflection principle is utilized, paint falling detection can be automatically carried out on the surface of the glass bottle, use is convenient, hardware cost is low, detection efficiency is high, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of container surface paint peeling detection, in particular to a single-camera detection device for detecting paint peeling on the upper surface of a container. Background Art

[0002] Glass bottles are the main packaging containers for the food, pharmaceutical and chemical industries. During the production process of glass bottles, their outer surfaces are spray-painted to decorate and protect them. In order to avoid defective paint products, the painted glass bottles need to be tested for paint loss. The traditional detection method is manual. The staff holds the glass bottle and places it in a light environment. Then the staff judges whether the glass bottle has paint loss by observing the changes in light distribution on the back of the glass bottle. However, this method is labor-intensive and needs to be improved.

[0003] Since the upper part and the shoulder of the glass bottle are usually the first to be seen, the paint loss there has the greatest impact, while the paint leakage at the lower part and the bottom is easily ignored. Therefore, in some occasions where the inspection requirements are not very strict, only the paint leakage at the upper part and the shoulder of the glass bottle needs to be inspected. To this end, we proposed a single-camera inspection device with a simple structure and low cost for inspecting paint loss on the upper surface of the container. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a single-camera detection device for detecting paint peeling on the surface of a container. The device adopts a structure combining a camera and a surface light and utilizes the principle of light transmission and reflection, so that it can automatically detect paint peeling on the surface of a glass bottle. It is easy to use, reduces manual labor intensity, and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a single-camera detection device for detecting paint peeling on the upper surface of a container, comprising a surface light source;

[0006] Surface light source: its input end is electrically connected to the output end of a separately arranged visual inspection system. A central hole is provided in the middle of the surface light source. A camera is provided on the upper part of the surface light source, and the lens of the camera is provided inside the central hole. The camera is electrically connected to the separately arranged visual inspection system. Glass bottles are placed below the surface light source. The device adopts a camera and a surface light source in combination with the principle of light transmission and reflection, so that it can automatically detect paint peeling on the surface of the glass bottle. It is easy to use and reduces manual labor intensity.

[0007] Furthermore, a parallel film is attached to the bottom surface of the surface light source, and the size of the parallel film is consistent with the bottom surface of the surface light source, thereby improving the uniformity of light distribution emitted by the surface light source.

[0008] Furthermore, the bottom surface of the surface light source is a square, and the side length thereof is 2-3 times the outer diameter of the bottom of the glass bottle.

[0009] Furthermore, the vertical height between the bottom of the surface light source and the mouth of the glass bottle is 10 mm, and the aperture of the center hole of the surface light source is 2-3 times the outer diameter of the mouth of the glass bottle, which can avoid the surface light source from hitting the glass bottle, and avoid non-parallel light entering the mouth of the glass bottle due to the uneven surface of the bottle mouth, causing internal light pollution.

[0010] Furthermore, the lens of the camera extends 3-5 mm beyond the bottom of the surface light source, and the lens extends slightly beyond the middle hole to prevent light leakage.

[0011] Furthermore, the glass bottle is made of a transparent glass material with a painted surface.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the single-camera detection device for detecting paint peeling on the upper surface of a container has the following advantages:

[0013] When detecting paint loss on the surface of the container, the mouth of the glass bottle is vertically aligned with the middle hole, and a separately arranged visual inspection system starts a surface light source. The surface light source is irradiated to the outer arc surface of the shoulder of the glass bottle through a parallel film. The parallel film improves the uniformity of light distribution emitted by the surface light source, which facilitates a more intuitive subsequent detection of paint loss on the surface of the container. A separately arranged visual inspection system starts a camera. When paint loss occurs on the body or shoulder of the glass bottle where light is irradiated, the light will be transmitted into the glass bottle at the paint loss location, and then a light spot will be formed at the bottom of the bottle through reflection and other processes. The light spot is photographed by the camera, thereby realizing paint loss detection on the glass bottle through the camera, and the camera transmits the detection result to a separately arranged visual inspection system in the form of an electrical signal. The single-camera detection device for detecting paint loss on the upper surface of the container adopts a combination of a camera and a surface light and utilizes the principle of light transmission and reflection, so that paint loss detection can be automatically performed on the surface of the glass bottle. The device is easy to use and reduces manual labor intensity.

[0014] It has a simple structure, low hardware cost, accurate recognition, simple algorithm, and can achieve high-speed production without the need for particularly complex mechanical interfaces and control schemes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the utility model when viewed from above;

[0018] Figure 4 This is a diagram of paint loss on the shoulder of a wine bottle;

[0019] Figure 5 This is a diagram of paint loss on the shoulder of a wine bottle;

[0020] Figure 6 This is a diagram of paint falling off the bottle.

[0021] Figure 7 This is a diagram of paint falling off the bottle.

[0022] Figure 8 Schematic diagram of the reflection points of the paint peeling points captured by the camera.

[0023] In the picture: 1 surface light source, 2 camera, 3 glass bottle, 4 parallel film. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-3 ,This embodiment provides a technical solution: a single-camera detection device for detecting paint peeling on the upper surface of a container, comprising a surface light source 1;

[0026] Surface light source 1: its input end is electrically connected to the output end of a separately arranged visual inspection system, a middle hole is provided in the middle of the surface light source 1, a camera 2 is arranged on the upper part of the surface light source 1, and the lens of the camera 2 is arranged inside the middle hole, the camera 2 is electrically connected to the separately arranged visual inspection system, and a glass bottle 3 is placed below the surface light source 1; when the paint peeling detection is performed on the surface of the container, the bottle mouth of the glass bottle 3 is vertically aligned with the middle hole, and the separately arranged visual inspection system starts the surface light source 1, and the surface light source 1 is irradiated to the bottle shoulder and the outer arc surface of the bottle body of the glass bottle 3 through the parallel film 4, and the light distribution uniformity emitted by the surface light source 1 is improved by the parallel film 4, so that the subsequent container detection is more intuitive. For the detection of paint peeling on the surface of the container, a separately arranged visual inspection system 2 starts the camera 2. When there is paint peeling on the body or shoulder of the glass bottle 3 where light is irradiated, the light will be transmitted into the glass bottle at the paint peeling place, and then a light spot will be formed at the bottom of the bottle after reflection and other processes. The light spot will be photographed by the camera 2, thereby realizing the paint peeling detection of the glass bottle 3 through the camera 2. The camera 2 transmits the detection result to the separately arranged visual inspection system in the form of an electrical signal. The single-camera detection device for detecting paint peeling on the upper surface of the container adopts the camera 2 and the surface light source 1 in combination with the principle of light transmission and reflection, so that the paint peeling on the surface of the glass bottle can be automatically detected. The device is easy to use and reduces the labor intensity.

[0027] Among them, a parallel film 4 is pasted on the bottom surface of the surface light source, and the size of the parallel film 4 is consistent with the bottom surface of the surface light source, which improves the uniformity of light distribution emitted by the surface light source; the bottom surface of the surface light source 1 is a square, and its side length is 2-3 times the outer diameter of the bottom of the glass bottle 3; the vertical height from the bottom of the surface light source 1 to the bottle mouth of the glass bottle 3 is 10mm, and the aperture of the center hole of the surface light source 1 is 2-3 times the outer diameter of the bottle mouth of the glass bottle 3, which can avoid the surface light source from hitting the glass bottle, and avoid non-parallel light entering the bottle mouth of the glass bottle due to the uneven surface of the bottle mouth to cause internal light pollution; the lens of the camera 2 extends 3-5mm from the bottom of the surface light source 1, and the lens extends a little from the center hole to avoid light leakage; the glass bottle 3 is made of transparent glass material with painted surface.

[0028] The utility model provides a single-camera detection device for detecting paint peeling on the upper surface of a container, and its working principle is as follows: when detecting paint peeling on the surface of the container, the bottle mouth of the glass bottle 3 is vertically aligned with the middle hole, the visual detection system starts the surface light source 1, and the surface light source 1 is irradiated to the outer arc surface of the bottle shoulder of the glass bottle 3 through the parallel film 4, the visual detection system starts the arc light source 6 to irradiate the bottle body of the glass bottle 3, and at the same time, a separately arranged visual detection system 2 starts the camera 2. When there is paint peeling on the bottle body or the bottle shoulder of the glass bottle 3 where light is irradiated, the paint will be transmitted into the glass bottle at the paint peeling place, and then a light spot will be formed at the bottom of the bottle through reflection and other processes. The light spot is photographed by the camera 2, so that the paint peeling detection of the glass bottle 3 is realized by the camera 2, and the camera 2 transmits the detection result to the visual detection system in the form of an electrical signal.

[0029] See also Figure 4-7 There are 7 paint-shedding points on the bottle shoulder, namely 1-7, and 9 paint-shedding points on the bottle body, namely 8-16. These paint-shedding points are distributed at various positions on the bottle surface. After passing through this device, in the image taken by camera 2, each paint-shedding point has a corresponding reflection point, namely 1-16.

[0030] Shooting results Figure 8 As shown, the bright spots on the bottom of the bottle are distributed from the center to the outside as follows: stray light interference from the uneven bottle mouth, paint peeling on the upper part of the bottle shoulder projected on the center of the bottle bottom, paint peeling in the middle of the bottle shoulder projected on the outside of the center of the bottle bottom, and paint peeling in the middle of the bottle shoulder projected on the outside of the center of the bottle bottom. Paint peeling on the upper part of the bottle body is projected on the periphery of the center of the bottle bottom, and paint peeling in the middle and lower part of the bottle body cannot be observed by projection because the projection angle is too small. The disadvantage of this device is that since the lower part of the bottle body cannot be projected on the bottom of the bottle (the projection angle is a low-angle projection, and the surface of the bottom of the bottle is smooth and details cannot be displayed), the probability of missing the paint peeling on the lower part of the bottle body is relatively high. Therefore, this device is suitable for some occasions where the accuracy of paint peeling detection is not very high, especially for occasions where paint peeling on the bottom of the bottle body is not concerned.

[0031] It is worth noting that the surface light source 1 disclosed in the above embodiment can adopt HL-HFL7070, the camera 2 can adopt DSC-HX400, and the visual detection system provided in addition controls the operation of the surface light source 1 and the camera 2 by adopting the methods commonly used in the prior art.

[0032] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A single-camera detection device for detecting paint peeling on the upper surface of a container, characterized in that: comprising a surface light source (1); A surface light source (1): its input end is electrically connected to the output end of a separately arranged visual inspection system; a central hole is provided in the middle of the surface light source (1); a camera (2) is provided on the upper part of the surface light source (1); a lens of the camera (2) is provided inside the central hole; the camera (2) is electrically connected to the separately arranged visual inspection system; and a glass bottle (3) is placed below the surface light source (1).

2. A single-camera detection device for detecting paint peeling on the upper surface of a container according to claim 1, characterized in that: A parallel film (4) is adhered to the bottom surface of the surface light source (1), and the size of the parallel film (4) is consistent with the bottom surface of the surface light source (1).

3. A single-camera detection device for detecting paint peeling on the upper surface of a container according to claim 1, characterized in that: The bottom surface of the surface light source (1) is a square, and the side length thereof is 2 to 3 times the outer diameter of the bottom of the glass bottle (3).

4. A single-camera detection device for detecting paint peeling on the upper surface of a container according to claim 1, characterized in that: The vertical height between the bottom of the surface light source (1) and the mouth of the glass bottle (3) is 10 mm, and the diameter of the middle hole of the surface light source (1) is 2 to 3 times the outer diameter of the mouth of the glass bottle (3).

5. A single-camera detection device for detecting paint peeling on the upper surface of a container according to claim 1, characterized in that: The lens of the camera (2) extends 3-5 mm beyond the bottom of the surface light source (1).

6. A single-camera detection device for detecting paint peeling on the upper surface of a container according to claim 1, characterized in that: The glass bottle (3) is made of a transparent glass material with paint on the surface.

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