Visual inspection machine for surface defects of steel balls

Abstract

The invention relates to a steel ball surface defect visual inspection machine which comprises an inspection machine body, a steel ball placing hopper is placed at the top of the inspection machine body, and a plurality of conveying mechanisms which are communicated with the bottom of the steel ball placing hopper and used for conducting visual inspection on steel balls are arranged in an inner cavity of the inspection machine body. And ccd camera detection modules are fixed on two sides of the detection machine body. The invention relates to the technical field of steel ball visual detection. According to the visual inspection machine for the surface defects of the steel balls, when the steel balls are conveyed downwards, the steel balls continuously rotate by an angle, the faces, shielded by the guide frames, of the steel balls face the gap between the two guide frames, it is ensured that each face is exposed between the two guide frames, and visual inspection of a ccd camera detection module is facilitated; each surface of a large batch of steel balls can be rapidly and effectively detected, the positions of the steel balls can be rapidly adjusted, and the detection effect is effectively ensured.

Description

Technical Field

[0001] The invention relates to the technical field of steel ball visual inspection, in particular to a steel ball surface defect visual inspection machine. Background Art

[0002] Steel balls are a type of metal abrasives, and the main varieties include stainless steel balls, cast steel balls, aluminum balls, cut wire balls, grinding balls, and copper balls. According to different production and processing techniques, steel balls can be divided into grinding steel balls, forged steel balls, and cast steel balls. In addition, according to the processing materials, steel balls can be divided into bearing steel balls, stainless steel balls, carbon steel balls, copper bearing steel balls, alloy steel balls, etc. Among them, bearing steel balls are important basic parts of the industry, and alloy steel balls are a kind of spherical iron alloy wear-resistant body with carbon, chromium, manganese, molybdenum and other metal elements added as the main elements, and generated by forging, spinning, rolling and casting. In general, steel balls are widely used in industries and manufacturing.

[0003] Steel balls are important basic components in industries such as industry and manufacturing, and their quality directly affects the performance and service life of products. Therefore, it is very necessary to test steel balls. The testing of steel balls mainly includes appearance testing, geometric size testing, surface roughness testing, hardness testing, etc. The testing is mainly completed by the corresponding steel ball visual inspection machine. When the existing steel balls are visually inspected, it is impossible to ensure that each surface of the steel balls is exposed to the camera lens during transportation, and effective inspection cannot be performed. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a steel ball surface defect visual inspection machine to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a steel ball surface defect visual inspection machine, including a detection machine body, a steel ball placement bucket is placed on the top of the detection machine body, the inner cavity of the detection machine body is provided with a plurality of conveying mechanisms connected to the bottom of the steel ball placement bucket for visual inspection of the steel balls, CCD camera detection modules are fixed on both sides of the detection machine body, and a discharge base is fixedly connected to the bottom of the detection machine body;

[0006] The conveying mechanism includes two guide frames fixed above the discharging base and a double-rod cylinder fixed on the side of the inner cavity of the detection machine body, the two guide frames are provided with grooves adapted to the surface of the steel ball on the opposite sides, the middle sections of the two guide frames are provided with annular protruding sections, the spacing between the two guide frames is smaller than the inner diameter of the steel ball, one end of the double-rod cylinder piston rod is fixedly connected to a moving frame, a splint slidably connected to one side of the moving frame, a driving motor is fixedly connected to the side of the double-rod cylinder, a driving gear is fixedly connected to the output shaft end of the driving motor, a rack meshing with the driving gear is provided on the opposite sides of the two splints, and a limiting groove for limiting the bottom of the steel ball is provided on the opposite sides of the two splints;

[0007] The inner cavity of the detection machine body is rotatably connected to two drive shafts driven by a motor, and the surface of the drive shaft is rotatably connected to an extrusion wheel located between the two guide frames. The multiple extrusion wheels are grouped in pairs and are respectively distributed on the front and rear sides of the steel balls and abut against them. When in use, the steel balls are poured into the steel ball placement bucket, and the steel ball placement bucket is driven to vibrate by a vibration motor to output the internal steel balls along the flexible pipe to the guide frame below. The vibration transmission is reduced by the flexible pipe, and the steel balls enter the guide frame, are guided by the guide frame, and fall vertically under the action of gravity. At this time, the surface exposed between the two guide frames is detected by the CCD camera detection module, and then abuts against the extrusion wheel on the way down. The rotation of the extrusion wheel applies friction to the steel balls, so that It rotates 90 degrees up and down to expose the top and bottom for inspection, and then continues to fall and enters the annular protruding section, and then falls between the two clamps. At this time, the steel ball is in the limit groove, and then the double-rod cylinder drives the two clamps to clamp the steel ball. At this time, the motor drives the driving teeth to rotate, driving the two clamps to move alternately, driving the steel ball to rotate the angle, and the side blocked by the guide frame is rotated toward the gap between the two guide frames, which is convenient for the subsequent visual inspection of the CCD camera inspection module. After the inspection is completed, the clamp opens, the steel ball falls, and then the clamp is reset to continue to inspect the next group of steel balls. It can quickly and effectively inspect large quantities of steel balls on all sides, and can quickly adjust the position of the steel balls, effectively ensuring the inspection effect.

[0008] As a further solution of the present invention: the side extension lines of the two guide frames form a circle, which can effectively guide the steel ball to move up and down, and its front and rear surfaces can be exposed to the outside, and surface visual inspection can be performed through a CCD camera detection module.

[0009] As a further solution of the present invention: when the two racks are engaged with the driving teeth, the spacing between the two clamps is equal to the diameter of the steel ball, the steel ball is clamped by the two clamps, and then the driving teeth drive the rack to rotate, driving the two clamps to move alternately, driving the steel ball to rotate the angle, and rotating the side blocked by the guide frame toward the gap between the two guide frames, so as to facilitate the subsequent visual inspection of the CCD camera detection module.

[0010] As a further solution of the present invention: a flexible pipe is fixedly connected to the top of the two guide frames, the top of the flexible pipe is connected to the bottom of the steel ball placing bucket, the steel ball placing bucket is driven to vibrate by a vibration motor, and the internal steel balls are output along the flexible pipe to the guide frame below, thereby reducing vibration transmission through the flexible pipe.

[0011] As a further solution of the present invention: the two groups of CCD camera detection modules are respectively arranged on both sides of the conveying mechanism, and the lenses are facing the gap between the two guide frames. When the steel balls are conveyed downward, external force is applied to the steel balls to rotate them so that all surfaces pass through the gap between the two guide frames, and visual inspection is performed through the CCD camera detection modules to identify defects.

[0012] As a further solution of the present invention: the inner cavity of the discharging base is provided with a discharging port connected with the bottom of the guide frame, and a lever is provided at the connection between the discharging port and the bottom of the guide frame, through which the defective steel balls are moved to the waste outlet for discharge, and the steel balls that have passed the inspection slide along the guide frame to the good product discharging port in the discharging base for discharge.

[0013] As a further solution of the present invention: a limit plate for limiting the flexible pipe is fixedly connected to the side of the detection machine body. The limit plate is provided to prevent the flexible pipe from bending too much and affecting the normal transportation of the steel balls.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In the present invention, when the steel balls are transported downward, the angle is continuously rotated, and the side blocked by the guide frame is rotated toward the gap between the two guide frames, ensuring that each side is exposed between the two guide frames, which is convenient for the CCD camera detection module to perform visual detection, and can quickly and effectively detect various sides of a large number of steel balls, and can quickly adjust the position of the steel balls, effectively ensuring the detection effect.

[0016] 2. The present invention connects the top of the flexible pipe with the bottom of the steel ball placing bucket. The steel ball placing bucket is driven to vibrate by a vibration motor, and the internal steel balls are output along the flexible pipe to the guide frame below, thereby reducing vibration transmission through the flexible pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a structural cross-sectional view of the present invention;

[0019] Figure 3 It is a top view of the structure of the mobile frame of the present invention;

[0020] Figure 4 A top view of the structure of the guide frame of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the guide frame of the present invention.

[0022] In the figure: 1. discharge base; 2. detection machine body; 3. steel ball placement bucket; 4. CCD camera detection module; 5. flexible pipe; 6. guide frame; 7. annular protruding section; 8. extrusion wheel; 9. double-rod cylinder; 10. moving frame; 11. clamping plate; 12. limit groove; 13. rack; 14. driving tooth; 15. steel ball; 16. groove; 17. limit plate. DETAILED DESCRIPTION

[0023] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0024] See also Figure 1-5 The present invention provides a technical solution: a steel ball surface defect visual inspection machine, comprising a detection machine body 2, a steel ball placement bucket 3 is placed on the top of the detection machine body 2, the inner cavity of the detection machine body 2 is provided with a plurality of conveying mechanisms connected to the bottom of the steel ball placement bucket 3 for visual inspection of the steel balls 15, CCD camera detection modules 4 are fixed on both sides of the detection machine body 2, and a discharge base 1 is fixedly connected to the bottom of the detection machine body 2;

[0025] The conveying mechanism includes two guide frames 6 fixed above the discharge base 1 and a double-rod cylinder 9 fixed on the side of the inner cavity of the detection machine body 2, the two guide frames 6 have grooves 16 adapted to the surface of the steel ball 15 on opposite sides, the two guide frames 6 have annular protruding sections 7 in the middle sections, the distance between the two guide frames 6 is smaller than the inner diameter of the steel ball 15, one end of the piston rod of the double-rod cylinder 9 is fixedly connected to a moving frame 10, a clamping plate 11 is slidably connected to one side of the moving frame 10, a driving motor is fixedly connected to the side of the double-rod cylinder 9, and a driving tooth 14 is fixedly connected to the output shaft end of the driving motor, a rack 13 meshing with the driving tooth 14 is provided on the opposite sides of the two clamping plates 11, and a limiting groove 12 for limiting the bottom of the steel ball 15 is provided on the opposite sides of the two clamping plates 11;

[0026] The inner cavity of the detection machine body 2 is rotatably connected to two drive shafts driven by a motor, and the surface of the drive shaft is rotatably connected to an extrusion wheel 8 located between the two guide frames 6. The multiple extrusion wheels 8 are grouped in pairs and are respectively distributed on the front and rear sides of the steel balls 15 and abutted against them. When in use, the steel balls 15 are poured into the steel ball placement bucket 3, and the steel ball placement bucket 3 is driven to vibrate by a vibration motor to output the internal steel balls 15 along the flexible pipe 5 to the lower guide frame 6. The vibration transmission is reduced by the flexible pipe 5. The steel balls 15 enter the guide frame 6, are guided by the guide frame 6, and fall vertically under the action of gravity. At this time, the surface exposed between the two guide frames 6 is detected by the CCD camera detection module 4, and then abuts against the extrusion wheel 8 on the way down. The extrusion wheel 8 rotates to apply friction to the steel balls 15, causing them to rotate up and down. 90 degrees, exposing the top and bottom for inspection, and then continuing to fall, entering the annular protruding section 7, and now falling between the two clamps 11, at this time the steel ball 15 is located in the limit groove 12, and then the double-rod cylinder 9 drives the two clamps 11 to clamp the steel ball 15, and at this time the motor drives the driving gear 14 to rotate, driving the two clamps 11 to move alternately, driving the steel ball 15 to rotate the angle, and rotating the side blocked by the guide frame 6 toward the gap between the two guide frames 6, to facilitate the subsequent visual inspection of the CCD camera detection module 4, after the inspection is completed, the clamp 11 opens, the steel ball 15 falls, and then the clamp 11 is reset to continue to detect the next group of steel balls 15, which can quickly and effectively detect all sides of a large number of steel balls 15, and can quickly adjust the position of the steel ball 15, effectively ensuring the detection effect.

[0027] The side extension lines of the two guide frames 6 form a circle, which can effectively guide the steel ball 15 to move up and down, and expose its front and back surfaces to the outside, and perform surface visual inspection through the CCD camera detection module 4.

[0028] When the two racks 13 are meshed with the driving teeth 14, the spacing between the two clamps 11 is equal to the diameter of the steel ball 15. The steel ball 15 is clamped by the two clamps 11, and then the driving teeth 14 drive the rack 13 to rotate, driving the two clamps 11 to move alternately, driving the steel ball 15 to rotate an angle, and rotating the side blocked by the guide frame 6 toward the gap between the two guide frames 6, so as to facilitate the subsequent visual inspection of the CCD camera detection module 4.

[0029] A flexible pipe 5 is fixedly connected to the top of the two guide frames 6. The top of the flexible pipe 5 is connected to the bottom of the steel ball placing bucket 3. The steel ball placing bucket 3 is driven to vibrate by a vibration motor to output the internal steel balls 15 along the flexible pipe 5 to the lower guide frame 6, thereby reducing vibration transmission through the flexible pipe 5.

[0030] Two groups of CCD camera detection modules 4 are respectively arranged on both sides of the conveying mechanism, and the lenses are facing the gap between the two guide frames 6. When the steel ball 15 is conveyed downward, an external force is applied to the steel ball 15 to rotate it so that each surface passes through the gap between the two guide frames 6, and the CCD camera detection module 4 is used to perform visual inspection and identify defects.

[0031] The inner cavity of the discharge base 1 is provided with a discharge port connected to the bottom of the guide frame 6, and a lever is provided at the connection between the discharge port and the bottom of the guide frame 6. The defective steel balls 15 are pushed to the waste outlet for discharge through the lever, and the steel balls 15 that have passed the inspection slide along the guide frame 6 to the good product discharge port in the discharge base 1 for discharge.

[0032] A limiting plate 17 for limiting the position of the flexible pipe 5 is fixedly connected to the side of the detector body 2 . The limiting plate 17 can prevent the flexible pipe 5 from being bent too much to affect the normal transportation of the steel balls 15 .

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A steel ball surface defect visual inspection machine, comprising a machine body (2), a steel ball placing bucket (3) being placed on the top of the machine body (2), characterized in that: The inner cavity of the detection machine body (2) is provided with a plurality of conveying mechanisms connected to the bottom of the steel ball placement bucket (3) for visually detecting the steel balls (15), CCD camera detection modules (4) are fixed on both sides of the detection machine body (2), and the bottom of the detection machine body (2) is fixedly connected to a discharge base (1); The conveying mechanism comprises two guide frames (6) fixed above the discharge base (1) and a double-rod cylinder (9) fixed on the side of the inner cavity of the detector body (2), the two guide frames (6) are provided with grooves (16) adapted to the surface of the steel ball (15) on opposite sides, the middle sections of the two guide frames (6) are provided with an annular protruding section (7), the spacing between the two guide frames (6) is smaller than the inner diameter of the steel ball (15), and one side of the piston rod of the double-rod cylinder (9) is provided with a groove (16) adapted to the surface of the steel ball (15). The end is fixedly connected with a moving frame (10), a clamping plate (11) is slidably connected to one side of the moving frame (10), a driving motor is fixedly connected to the side of the double-rod cylinder (9), a driving tooth (14) is fixedly connected to the output shaft end of the driving motor, a rack (13) meshing with the driving tooth (14) is provided on the opposite sides of the two clamping plates (11), and a limiting groove (12) for limiting the bottom of the steel ball (15) is provided on the opposite sides of the two clamping plates (11); The inner cavity of the detection machine body (2) is rotatably connected to two drive shafts driven by a motor, and the surface of the drive shaft is rotatably connected to an extrusion wheel (8) located between two guide frames (6). The multiple extrusion wheels (8) are grouped in pairs and are respectively distributed on the front and rear sides of the steel ball (15) and abut against it.

2. The steel ball surface defect visual inspection machine according to claim 1, characterized in that: The side extension lines of the two guide frames (6) form a circle.

3. The steel ball surface defect visual inspection machine according to claim 1, characterized in that: When the two racks (13) are meshed with the driving teeth (14), the distance between the two clamping plates (11) is equal to the diameter of the steel ball (15).

4. The steel ball surface defect visual inspection machine according to claim 1, characterized in that: The tops of the two guide frames (6) are fixedly connected with flexible pipes (5), and the tops of the flexible pipes (5) are connected with the bottom of the steel ball placing bucket (3).

5. The steel ball surface defect visual inspection machine according to claim 1, characterized in that: The two groups of CCD camera detection modules (4) are respectively arranged on both sides of the conveying mechanism, and the lenses face the gap between the two guide frames (6).

6. The steel ball surface defect visual inspection machine according to claim 1, characterized in that: The inner cavity of the discharge base (1) is provided with a discharge port connected to the bottom of the guide frame (6), and a lever is provided at the connection point between the discharge port and the bottom of the guide frame (6).

7. The steel ball surface defect visual inspection machine according to claim 1, characterized in that: A limiting plate (17) for limiting the position of the flexible pipe (5) is fixedly connected to the side of the detection machine body (2).

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