A fully automatic inspection device for milk glass bottle appearance based on machine vision

Abstract

The utility model discloses a fully automatic inspection device for the appearance of milk glass bottles based on machine vision, including inspection station one, inspection station two, inspection station three, inspection station four, inspection station five and inspection station six which are arranged in sequence. This scheme can realize fully automatic inspection, and multiple inspection stations work at the same time, with high inspection efficiency. The arrangement structure of the same camera and light source is compact, and all-round inspection of the bottle mouth, bottle body and bottle bottom can be realized. This scheme sets inspection stations one to five, and the inspection items are complete. The inspection items include all-round inspection of the bottle mouth, bottle neck, bottle shoulder, bottle body, bottle bottom, bottle inner bottom and the area inside the bottle mouth. The inspection defects mainly include contour size, roundness, wrinkles, material lines, cracks, dirt, mold number, foreign matter, bottle height, thickness, pits, notches, uneven thickness, breakage, etc.

Description

Technical Field

[0001] The utility model relates to the technical field of milk glass bottle detection, and more specifically to a fully automatic milk glass bottle appearance detection device based on machine vision. Background Art

[0002] At present, the quality of milk glass bottles is mainly tested by human eyes. Due to the shortcomings of low detection efficiency, easy fatigue and high cost, human eyes can no longer meet the needs of large-scale and high-speed production lines in the industry. AI visual inspection equipment has unified inspection standards, high inspection accuracy, improved production quality and speed, bringing unlimited commercial value and economic benefits to the wine industry, and more importantly, improved quality assurance.

[0003] There are also a few automatic inspection solutions, such as the utility model patent with patent number CN212759785U, which discloses a beer bottle defect detection device based on visual inspection. This device only detects the defective parts on the inner edge, outer edge and top surface of the beer bottle mouth, and the detection area is single. Another example is a ceramic wine bottle inner wall defect detection device disclosed in the utility model with patent number CN217766135U. This patent only detects the inner wall of the ceramic wine bottle, and the detection area is single. Therefore, how to achieve all-round and automatic detection of colored bottles has become a technical problem that needs to be solved urgently. Utility Model Content

[0004] The utility model aims to provide a fully automatic inspection device for the appearance of milk glass bottles based on machine vision, so as to solve the technical problems of low efficiency, instability and incomplete inspection in the appearance inspection industry of milk glass bottles.

[0005] The technical solution of the utility model provides a fully automatic inspection device for the appearance of milk glass bottles based on machine vision, including inspection station one, inspection station two, inspection station three, inspection station four, inspection station five and inspection station six arranged in sequence;

[0006] The inspection station one includes three area array cameras, a surface light source and a reflector. The three area array cameras and the surface light source are arranged on both sides of the bottle, and the three area array cameras shoot the area where the bottle is located from the side; the inspection station two is a flying shooting station, including two area array cameras and an annular light source. The two area array cameras are arranged on the upper and lower sides of the bottle, and the annular light source is below the bottle; the inspection station three includes an area array camera and a parallel light source, and the parallel light source and the area array camera are arranged on both sides of the bottle mouth; the inspection station four includes two line cameras, a red point light source and a blue surface light source, and the two line cameras shoot the area from the bottle mouth to the bottle body; the inspection station five includes two line cameras and a blue surface light source, and the two line cameras shoot the upper half of the bottle tray; the inspection station six includes two area array cameras and two annular light sources. An area array camera and an annular light source form two groups of optical components, and the two groups of optical components are arranged on the upper and lower sides of the bottle.

[0007] In a preferred embodiment, the inspection station one is a rotating station, and the three area array cameras on the inspection station one are respectively defined as the 1-1 camera, the 1-2 camera and the 1-3 camera, and the surface light source is defined as the 1-1 light source; the 1-1 camera is placed on the side of the bottle mouth to photograph the bottle mouth, bottle shoulder and the upper area of ​​the bottle body in a horizontal direction, and the 1-2 camera is placed on the side of the sample bottle body to photograph the middle part of the bottle body in a horizontal direction; the 1-3 camera is placed on the side of the sample bottom and is aligned with the reflector to photograph the lower area of ​​the bottle body horizontally.

[0008] In a preferred embodiment, the detection station four is a rotating station, the two line cameras on the detection station four are positioned as the 4-1st camera and the 4-2nd camera, the red point light source is defined as the 4-1st light source, and the blue surface light source is defined as the 4-2nd light source;

[0009] The 4-1 camera is matched with the 4-1 light source. The 4-1 camera looks horizontally at the bottle neck, and the 4-1 light source is located above the bottle mouth and vertically illuminates the bottle mouth; the 4-2 camera is matched with the 4-2 light source. The 4-2 camera looks horizontally at the bottle body area, and the 4-2 light source obliquely illuminates the bottle body area, with an angle of about 30-60° with the horizontal plane.

[0010] In a preferred embodiment, the detection station five is a rotating station, the two line cameras on the detection station five are respectively defined as the 5-1st camera and the 5-2nd camera, and the blue surface light source is defined as the 5-1st light source;

[0011] The 5-1st camera and the 5-2nd camera are matched with the 5-1st light source. The 5-1st camera looks down at the bottle shoulder area, and the angle with the horizontal plane is 45-75°. The 5-2nd camera looks up to shoot the upper part of the bottle body, and the angle with the horizontal plane is 10-25°. The 5-1st light source obliquely illuminates the bottle shoulder area, and the angle with the horizontal plane is 45-70°.

[0012] In a preferred embodiment, the inspection station one and the inspection station four are both provided with a downward pressure limit assembly, and the downward pressure limit assembly includes a mounting bracket, a downward pressure cylinder arranged on the mounting bracket, a connecting seat connected to the downward pressure cylinder, and a conical pressure block arranged on the connecting seat, and when the downward pressure is limited, the conical pressure block extends into the bottle mouth, and the conical pressure block is rotatably connected to the connecting seat.

[0013] In a preferred embodiment, the conical pressing block is made of food-grade silicone.

[0014] In a preferred embodiment, a rotation positioning assembly is provided on the inspection station four, and the rotation positioning assembly includes a servo motor, a rotating table connected to the servo motor, a clamping cylinder arranged on the rotating table and two clamping jaws connected to the clamping cylinder, the openings of the two clamping jaws are arranged opposite to each other, and the clamping jaw cylinder drives the two clamping jaws to move in a direction close to or away from each other.

[0015] The beneficial effects of the technical solution of the utility model are:

[0016] This solution can realize fully automated inspection, with multiple inspection stations working simultaneously, high inspection efficiency, and a compact structure of camera and light source, which can realize all-round inspection of bottle mouth, bottle body and bottle bottom.

[0017] This plan sets up inspection stations one to five with a full range of inspection items, including the bottle mouth, bottle neck, bottle shoulder, bottle body, bottle bottom, bottle inner bottom, and the area inside the bottle mouth for all-round inspection. The inspection defects mainly include contour size, roundness, wrinkles, material lines, cracks, dirt, mold number, foreign matter, bottle height, thickness, pits, notches, uneven thickness, breakage, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 This is a partial structural diagram of the utility model.

[0020] Figure 3 This is a schematic diagram of the structure of the detection station 1 and the pressing component of the utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the second detection station of the utility model.

[0022] Figure 5 This is a schematic diagram of the structure of the fourth and fifth detection stations of the utility model.

[0023] Figure 6 This is a schematic diagram of the sixth structure of the detection station of the utility model.

[0024] Figure 7 This is a schematic diagram of the structure of the rotary positioning component of the utility model.

[0025] 1 Inspection station 1, 11 1-1 camera, 12 1-2 camera, 13 1-3 camera, 14 reflector, 15 1-1 light source, 2 Inspection station 2, 21 2-1 camera, 22 2-2 camera, 23 2-1 light source, 3 Inspection station 3, 31 3-1 camera, 32 3-1 light source, 4 Inspection station 4, 41 4-1 camera, 42 4-2 camera, 43 4-1 light source, 44 4-2 light source, 5 Inspection station five, 51 5-1st camera, 52 5-2nd camera, 53 5-1st light source, 6 inspection station six, 61 6-1st camera, 62 6-2nd camera, 63 6-1st light source, 64 6-2nd light source, 7 downward pressure limit assembly, 71 mounting bracket, 72 downward pressure cylinder, 73 connecting seat, 74 conical pressure block, 8 rotation positioning assembly, 81 servo motor, 82 rotating table, 83 clamping cylinder, 84 clamping jaw, 9 reciprocating conveying mechanism. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the sake of illustration and convenience of description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0027] like Figure 1-7 As shown, the technical solution of the utility model provides a fully automatic inspection equipment for the appearance of milk glass bottles based on machine vision, including inspection station 1, inspection station 2, inspection station 3, inspection station 4, inspection station 5, and inspection station 6, which are arranged in sequence. The bottles entering the inspection equipment are obtained by the reciprocating conveying mechanism 9 and transported to the corresponding inspection stations in sequence for a series of inspections. Qualified products are transported to the next processing station, and unqualified bottles are collected through the waste channel. The inspection items include the bottle mouth, bottle neck, bottle shoulder, bottle body, bottle bottom, bottle bottom, and the area inside the bottle mouth for all-round inspection. The inspection defects mainly include contour size, roundness, wrinkles, material lines, cracks, dirt, mold number, foreign matter, bottle height, thickness, pits, notches, uneven thickness, breakage, etc.

[0028] The inspection station 1 includes three area array cameras, a surface light source and a reflector 14. The three area array cameras and the surface light source are arranged on both sides of the bottle, and the three area array cameras shoot the area where the bottle is located from the side; the inspection station 2 is a flying shooting station, including two area array cameras and an annular light source. The two area array cameras are arranged on the upper and lower sides of the bottle, and the annular light source is below the bottle; the inspection station 3 includes an area array camera and a parallel light source, and the parallel light source and the area array camera are arranged on both sides of the bottle mouth; the inspection station 4 includes two line cameras, a red point light source and a blue surface light source, and the two line cameras shoot the area from the bottle mouth to the bottle body; the inspection station 5 includes two line cameras and a blue surface light source, and the two line cameras shoot the upper half of the bottle plate; the inspection station 6 includes two area array cameras and two annular light sources. An area array camera and an annular light source form two groups of optical components, and the two groups of optical components are arranged on the upper and lower sides of the bottle.

[0029] Inspection station 1 is a rotating station. Inspection station 1 mainly detects but is not limited to the bottle mouth, bottle shoulder, and bottle body area, and detects defects such as outline size, roundness, wrinkles, material lines, cracks, dirt, and foreign matter. The three area array cameras on the inspection station 1 are defined as the 1-1 camera 11, the 1-2 camera 12, and the 1-3 camera 13, respectively, and the surface light source is defined as the 1-1 light source 15; the 1-1 camera 11 is placed on the side of the bottle mouth, and photographs the bottle mouth, bottle shoulder, and upper area of ​​the bottle body in a horizontal view; the 1-2 camera 12 is placed on the side of the sample bottle body, and photographs the middle of the bottle body in a horizontal view; the 1-3 camera 13 is placed on the side of the sample bottom, and is aligned with the reflector 14 to photograph the lower area of ​​the bottle body horizontally. Among them, the 1-1 light source 15 is evenly distributed at the bottom of the light source after optimization, and forms a uniform irradiation light on the surface after passing through the diffuse reflection plate, which serves as a uniform white background, making it easy to detect defects.

[0030] Inspection station 2 mainly inspects the outer bottom and inner bottom of the bottle, and inspects defects such as mold number, dirt, foreign matter, and cracks. The two array cameras of inspection station 2 are defined as the 2-1st camera 21 and the 2-2nd camera 22, and the annular light source is defined as the 2-1st light source 23. The 2-1st light source 23 is equipped with a diffuse reflection plate, which has the characteristics of high brightness and uniform light, and can avoid the shadow problem caused by diagonal illumination, thereby highlighting the three-dimensional information of the object.

[0031] Milk glass bottles are a type of wine bottle, that is, emulsified glass. A good wine bottle has a smooth and regular bottom. When illuminated from the bottom by a high-brightness ring light source, the light diffuses inside the milk glass bottle, and the bottom of the bottle is bright. Defects such as black spots, dirt, cracks, and foreign matter will destroy this bright feature, and the black or black-like features opposite to the bright feature will form a sharp contrast with the surrounding area, making it easy to detect. During the flying shooting process, not only can objects be inspected, but also the inspection time of the entire system can be saved without affecting the movement of the object, thereby improving the inspection speed and production efficiency.

[0032] The array camera of the inspection station 3 is defined as the 3-1st camera 31, and the parallel light source is defined as the 3-1st light source 32. The inspection station 3 mainly detects defects such as bottle height, bottle mouth outer diameter, and mouth edge thickness; with a telecentric lens, the stability and accuracy can be further improved, and the interference of environmental stray light can be further reduced.

[0033] Parallel light is also called directional light. When a parallel light source is used as a backlight source, the light emission direction is more uniform, which can eliminate edge blur caused by diffuse reflection, obtain images with clear and sharp edges, improve measurement accuracy, improve contrast (improve the edge contour contrast of the detected object in the detection system), and eliminate boundary effects (backlight diffuse reflection reflects light on the side of the object, making the object look smaller than it actually is. Parallel light can reduce this reflection phenomenon). Therefore, it is very suitable for detecting objects with circular contours.

[0034] The optical system of this workstation also determines the quality of wine bottles by their contours. The contours of irregular or defective wine bottles presented by parallel backlight are also irregular, forming local or overall convex or concave features. When combined with a telecentric lens, the detection accuracy is higher, and a slight shift of the object forward or backward within the depth of field of the telecentric lens will not affect the detection result.

[0035] The inspection station four 4 is a rotating station, and the two line cameras on the inspection station four 4 are positioned as the 4-1st camera 41 and the 4-2nd camera 42. The red point light source is defined as the 4-1st light source 43, and the blue surface light source is defined as the 4-2nd light source 44. The 4-1st camera 41 is matched with the 4-1st light source 43. The 4-1st camera 41 looks horizontally at the bottle neck. The 4-1st light source 43 is located above the bottle mouth and vertically illuminates the bottle mouth, mainly to detect cracks, breakage, black spots, dirt and other defects at the bottle mouth, bottle neck and bottle neck. The 4-2nd camera 42 is matched with the 4-2nd light source 44. The 4-2nd camera 42 looks horizontally at the bottle body area. The 4-2nd light source 44 tilts and illuminates the bottle body area, with an angle of about 30-60° with the horizontal plane, mainly to detect cracks, breakage, black spots, dirt and other defects in the bottle body area.

[0036] Among them, the advantage of point light is that it has high brightness and stronger focusing ability when matched with a lens. When the object is moving at high speed, it can avoid problems such as motion blur and smearing. In addition, the point light source is small in size, which can save equipment space and achieve high-brightness lighting in a small range. Red light has a relatively long wavelength and higher penetration than other wavelengths, making it more suitable for internal inspection that requires penetrating the surface. Based on the same principle, when a point light source illuminates the bottle mouth, the light will diffuse from the inside to the outside in the bottle mouth area, and the defect position will destroy this light diffusion, that is, change the propagation of light at the defect position, further making the features of the defect position contrast sharply with the features of the surrounding good positions, making it easy to detect.

[0037] Among them, blue light has a shorter wavelength, a weaker diffraction effect, and stronger light particle properties, so it has a stronger ability to depict details and detect object details; the blue surface light shines down on the bottle area from top to bottom, and the camera shoots the bottle body at eye level. Since a good bottle body is flat and smooth, the light irradiated on the bottle body is reflected, and the reflected light is relatively regular; if the bottle body has bumps or cracks, it will destroy this regularity, and the defect characteristics will be in sharp contrast with the surrounding area.

[0038] The inspection station five 5 is a rotating station. The two line cameras on the inspection station five 5 are respectively defined as the 5-1st camera 51 and the 5-2nd camera 52, and the blue surface light source is defined as the 5-1st light source 53.

[0039] The 5-1st camera 51 and the 5-2nd camera 52 are matched with the 5-1st light source 53. The 5-1st camera 51 looks down at the bottle shoulder area, with an angle of 45-75° with the horizontal plane, and mainly detects defects such as cracks, pits, scratches, damage, black spots, dirt, etc. on the bottle shoulder. The 5-2nd camera 52 looks up to shoot the upper part of the bottle body area, with an angle of 10-25° with the horizontal plane, and mainly detects defects such as wrinkles and cracks in the bottle body area. The 5-1 light source 53 obliquely illuminates the bottle shoulder area, and the angle with the horizontal plane is 45-70°. The 5-1 light source 53 is a blue surface light source. The 5-1 light source 53 illuminates the bottle shoulder area from top to bottom. (5-1) takes a bird's-eye view of the bottle shoulder, and the 5-2 camera 52 takes a bird's-eye view of the upper part of the bottle body. A good bottle body has a flat and smooth surface, and the light irradiated to the bottle shoulder is reflected in a relatively regular manner. If the bottle shoulder has bumps or cracks, this regularity will be destroyed, and the defect characteristics will be in sharp contrast with the surrounding area.

[0040] The two area array cameras on the detection station 6 are defined as the 6-1st camera 61 and the 6-2nd camera 62, and the two annular light sources are defined as the 6-1st light source 63 and the 6-2nd light source 64. The main detections are defects such as the outer diameter, black spots, dirt, and breakage of the bottle bottom, and the inner diameter, outer diameter, surface pits, notches, and cracks of the bottle mouth. The 6-1st camera 61 and the 6-1st light source 63 are both perpendicular to the mouth of the sample, and the 6-2nd camera 62 and the 6-2nd light source 64 are both perpendicular to the bottom of the sample. Light source 1 and light source 2 are high-brightness light sources, and are equipped with diffuse reflection plates. They have the characteristics of high brightness and uniform light, and can avoid the shadow problem caused by diagonal illumination, thereby highlighting the three-dimensional information of the object.

[0041] The 6-2 light source 64 illuminates from the bottom of the bottle, and the 6-2 camera 62 is located below the light source and receives the light reflected from the bottom of the bottle. The defects of the bottom of the bottle will destroy the optical path of the light. Compared with the surrounding stroke, the inside and outside of the flat bottom edge boundary will form a sharp black and white contrast, which can detect the contour of the bottom of the bottle and calculate the outer diameter of the bottom of the bottle. The detection principle of the bottle mouth and the bottom of the bottle is the same. The inner and outer diameters of the bottle mouth are compared with other positions in black and white. With the telecentric lens, the detection accuracy is higher, and the slight fluctuation of the object within the depth of field of the telecentric lens does not affect the detection result.

[0042] The detection station 1 and the detection station 4 are both provided with a downward pressure limit assembly 7, and the downward pressure limit assembly 7 includes a mounting bracket 71, a downward pressure cylinder 72 disposed on the mounting bracket 71, a connecting seat 73 connected to the downward pressure cylinder 72, and a conical pressing block 74 disposed on the connecting seat 73. When the downward pressure limit is performed, the conical pressing block 74 extends into the bottle mouth, and the conical pressing block 74 is rotatably connected to the connecting seat 73. The conical pressing block 74 is made of food-grade silicone. When the detection station 1 and the detection station 4 are performing rotation detection, the downward pressure cylinder 72 drives the connecting seat 73 to make the conical pressing block 74 move downward and press on the bottle cone, thereby limiting the bottle without affecting the rotation of the bottle. The rotation of the bottle is driven by a rotating disk or the like in the prior art.

[0043] The detection station 244 is provided with a rotation positioning assembly 8, which includes a servo motor 81, a rotating platform 82 connected to the servo motor 81, a clamping cylinder 83 provided on the rotating platform 82, and two clamping jaws 84 connected to the clamping cylinder 83, the openings of the two clamping jaws are arranged opposite to each other, and the clamping cylinder 83 drives the two clamping jaws 84 to move in a direction of approaching or moving away from each other. Because the detection station 244 does not involve the detection of the lower part of the bottle, the bottle is positioned by fixing the lower part of the bottle with the clamping jaw 84. When fixing, the clamping jaw cylinder 83 drives the two clamping jaws 84 to approach each other and then clamp the bottle, and the rotating platform 82 is used to drive the bottle to rotate to complete the rotation detection.

[0044] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A fully automatic inspection device for milk glass bottle appearance based on machine vision, characterized by: It includes testing station one, testing station two, testing station three, testing station four, testing station five and testing station six which are arranged in sequence; The inspection station one includes three area array cameras, a surface light source and a reflector. The three area array cameras and the surface light source are arranged on both sides of the bottle, and the three area array cameras shoot the area where the bottle is located from the side; the inspection station two is a flying shooting station, including two area array cameras and an annular light source. The two area array cameras are arranged on the upper and lower sides of the bottle, and the annular light source is below the bottle; the inspection station three includes an area array camera and a parallel light source, and the parallel light source and the area array camera are arranged on both sides of the bottle mouth; the inspection station four includes two line cameras, a red point light source and a blue surface light source, and the two line cameras shoot the area from the bottle mouth to the bottle body; the inspection station five includes two line cameras and a blue surface light source, and the two line cameras shoot the upper half of the bottle tray; the inspection station six includes two area array cameras and two annular light sources. An area array camera and an annular light source form two groups of optical components, and the two groups of optical components are arranged on the upper and lower sides of the bottle.

2. The fully automatic inspection device for milk glass bottle appearance based on machine vision according to claim 1 is characterized by: The inspection station one is a rotating station, and the three area array cameras on the inspection station one are respectively defined as the 1-1 camera, the 1-2 camera and the 1-3 camera, and the surface light source is defined as the 1-1 light source; the 1-1 camera is placed on the side of the bottle mouth, and photographs the bottle mouth, bottle shoulder, and the upper area of ​​the bottle body in a horizontal direction; the 1-2 camera is placed on the side of the sample bottle body, and photographs the middle part of the bottle body in a horizontal direction; the 1-3 camera is placed on the side of the sample bottom and is aligned with the reflector, and photographs the lower area of ​​the bottle body horizontally.

3. The fully automatic inspection device for milk glass bottle appearance based on machine vision according to claim 1 is characterized in that: The detection station four is a rotating station, and the two line cameras on the detection station four are positioned as the 4-1 camera and the 4-2 camera, the red point light source is defined as the 4-1 light source, and the blue surface light source is defined as the 4-2 light source; The 4-1 camera is matched with the 4-1 light source. The 4-1 camera looks horizontally at the bottle neck, and the 4-1 light source is located above the bottle mouth and vertically illuminates the bottle mouth; the 4-2 camera is matched with the 4-2 light source. The 4-2 camera looks horizontally at the bottle body area, and the 4-2 light source obliquely illuminates the bottle body area, with an angle of about 30-60° with the horizontal plane.

4. The fully automatic inspection device for milk glass bottle appearance based on machine vision according to claim 1 is characterized by: The detection station five is a rotating station, the two line cameras on the detection station five are respectively defined as the 5-1 camera and the 5-2 camera, and the blue surface light source is defined as the 5-1 light source; The 5-1st camera and the 5-2nd camera are matched with the 5-1st light source. The 5-1st camera looks down at the bottle shoulder area, and the angle with the horizontal plane is 45-75°. The 5-2nd camera looks up to shoot the upper part of the bottle body, and the angle with the horizontal plane is 10-25°. The 5-1st light source obliquely illuminates the bottle shoulder area, and the angle with the horizontal plane is 45-70°.

5. The fully automatic inspection device for milk glass bottle appearance based on machine vision according to claim 1 is characterized by: The detection station one and the detection station four are both provided with a downward pressure limit assembly, and the downward pressure limit assembly includes a mounting bracket, a downward pressure cylinder arranged on the mounting bracket, a connecting seat connected to the downward pressure cylinder and a conical pressure block arranged on the connecting seat. When the downward pressure is limited, the conical pressure block extends into the bottle mouth, and the conical pressure block is rotatably connected to the connecting seat.

6. The fully automatic inspection device for milk glass bottle appearance based on machine vision according to claim 5 is characterized by: The conical pressing block is made of food-grade silicone.

7. The fully automatic inspection device for milk glass bottle appearance based on machine vision according to claim 1 is characterized by: The detection station four is provided with a rotation positioning assembly, which includes a servo motor, a rotating table connected to the servo motor, a clamping cylinder arranged on the rotating table and two clamping jaws connected to the clamping cylinder, the openings of the two clamping jaws are arranged opposite to each other, and the clamping jaw cylinder drives the two clamping jaws to move in a direction of approaching or moving away from each other.

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