Visual inspection device for external dimension of nut

Abstract

The utility model provides a visual inspection device for the external dimension of a nut. The visual inspection device comprises a base, a supporting material frame, a visual inspection mechanism, a first moving mechanism, a second moving mechanism and a control part, a trough is formed in the supporting rack, an inlet is formed in the front end of the supporting rack, and a first outlet and a second outlet are formed in the rear end of the supporting rack; the image acquisition end of the visual inspection mechanism is positioned right above the trough and is electrically connected with the control part; the first moving mechanism is used for moving the nuts into the material groove from the inlet, and when the nuts are detected to be qualified, the first moving mechanism further discharges the nuts in the material groove from the first outlet; when the nuts are detected to be unqualified, the second moving mechanism is used for discharging the nuts in the material groove from the second outlet; and the first moving mechanism and the second moving mechanism are electrically connected with the control part. The device is high in automation degree and good in detection efficiency, and time and labor wasting and low efficiency of manual detection are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automation devices, in particular to a visual detection device for the outer dimensions of nuts. Background Art

[0002] Nuts are components that tightly connect mechanical equipment. Through their internal threads, only nuts and bolts of the same specifications can be connected. Nuts require high precision in their outer dimensions. Improper machining will hinder installation. Existing nut inspection methods mostly rely on manual labor, which is time-consuming and inefficient, and prevents rapid automated inspection and screening of nuts. Utility Model Content

[0003] The technical problem to be solved by the present invention is that the existing nut detection methods mostly rely on manual work, which is not only time-consuming and labor-intensive, but also inefficient and unable to quickly perform automated detection and screening of nuts. In order to overcome the above defects of the existing technology, the present invention provides a visual detection device for the outer dimensions of nuts.

[0004] The utility model provides a visual inspection device for the outer dimensions of nuts, comprising a base, on which a supporting material rack, a visual inspection mechanism, a first moving mechanism, a second moving mechanism and a control unit are installed; the supporting material rack is provided with a material trough for the lateral movement of the nuts, the front end of the supporting material rack is provided with an inlet connected to the material trough, and the rear end of the supporting material rack is provided with a first outlet and a second outlet connected to the material trough; the image acquisition end of the visual inspection mechanism is located directly above the material trough and is used to collect image information of the outer dimensions of the nuts in the material trough, and the image acquisition end of the visual inspection mechanism is electrically connected to the control unit; the first moving mechanism is used to move the nuts from the inlet into the material trough, and when the nuts are qualified in the inspection, the first moving mechanism also discharges the nuts in the material trough from the first outlet for discharging qualified nuts; when the nuts are unqualified in the inspection, the second moving mechanism is used to discharge the nuts in the material trough from the second outlet for discharging unqualified nuts; the first moving mechanism and the second moving mechanism are both electrically connected to the control unit.

[0005] Compared with the prior art, the visual inspection device for the outer dimensions of nuts in the present application has the following advantages: by arranging a material trough on a supporting material rack, a first moving mechanism moves the nuts from an inlet to a material trough, and an image acquisition end of the visual inspection mechanism acquires image information of the outer dimensions of the nuts. When the outer dimensions are qualified, the control unit controls the first moving mechanism to discharge the nuts from a first outlet. When the outer dimensions are unqualified, the control unit controls the second moving mechanism to discharge the nuts from a second outlet. The automatic inspection of nuts and the automatic unloading of nuts after inspection have a high degree of automation and good inspection efficiency, thereby avoiding the time-consuming, labor-intensive and inefficient manual inspection, and realizing automatic inspection of nuts.

[0006] In a possible embodiment, the visual detection mechanism includes a vertical pole, a connecting block, a longitudinal pole and a camera, the vertical pole is fixedly mounted on the base, the connecting block is connected to the vertical pole along the vertical movement, a first locking portion is provided between the connecting block and the vertical pole, the longitudinal pole is connected to the connecting block along the longitudinal movement, a second locking portion is provided between the longitudinal pole and the connecting block, the camera is connected to the end of the longitudinal pole away from the connecting block, the camera is located directly above the material trough, and the camera is electrically connected to the control unit.

[0007] Compared with the existing technology, the above technical solution can collect information about the outer dimensions of the nut through a camera, and the collected information is reliable and stable. At the same time, the connection structure is adjustable, which facilitates image collection and improves detection reliability.

[0008] In a possible implementation manner, the vertical poles and the longitudinal poles are both cylindrical structures.

[0009] Compared with the existing technology, the above technical solution can facilitate the adjustment of the position of the camera at multiple angles, which is beneficial for visual inspection.

[0010] In a possible implementation manner, the first locking portion and the second locking portion are both locking screws.

[0011] Compared with the prior art, the above technical solution can be used for convenient locking.

[0012] In a possible implementation manner, a light source for providing illumination for the camera is provided on the vertical pole.

[0013] Compared with the existing technology, the above technical solution can provide lighting for the camera and improve the accuracy of image acquisition.

[0014] In a possible embodiment, the first moving mechanism includes a chuck, a transverse moving part and a longitudinal moving part, the longitudinal moving part is installed on the base, the longitudinal moving end of the longitudinal moving part is connected to the transverse moving part, the transverse moving end of the transverse moving part is connected to the chuck, the chuck is arranged close to the supporting material rack, and a slot for clamping a nut is provided on the chuck, and the transverse moving part and the longitudinal moving part are both electrically connected to the control part.

[0015] Compared with the existing technology, the above technical solution can realize the movement of the nut, which is conducive to visual inspection.

[0016] In a possible embodiment, the second moving mechanism includes a push cylinder and a push block, the push cylinder is installed on the base, the pushing end of the push cylinder is connected to the push block, the push block is located on the side of the supporting material rack, the push block is used to push the nut in the material trough and move toward the second outlet, and the push cylinder is electrically connected to the control unit.

[0017] Compared with the existing technology, the above technical solution can screen qualified nuts and remove unqualified nuts. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall schematic diagram of the utility model;

[0019] Figure 2 It is a top view of the utility model;

[0020] Figure 3 It is a structural diagram of the visual inspection mechanism;

[0021] Description of reference numerals:

[0022] 1. Base; 2. Support rack; 21. Material trough; 22. Inlet; 23. First outlet; 24. Second outlet; 3. Visual inspection mechanism; 31. Vertical pole; 32. Connecting block; 33. Longitudinal rod; 34. Camera; 35. Light source; 4. First moving mechanism; 41. Chuck; 411. Card slot; 42. Horizontal moving part; 43. Longitudinal moving part; 5. Second moving mechanism; 51. Push cylinder; 52. Push block; 6. Material guide slope. DETAILED DESCRIPTION

[0023] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific application scenarios.

[0024] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0025] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0026] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] See also Figures 1 to 3 The embodiment of the present application discloses a visual inspection device for the outer dimensions of nuts, comprising a base 1, on which a supporting material rack 2, a visual inspection mechanism 3, a first moving mechanism 4, a second moving mechanism 5 and a control unit are mounted; the supporting material rack 2 is provided with a trough 21 for the lateral movement of the nuts, the front end of the supporting material rack 2 is provided with an inlet 22 connected to the trough 21, and the rear end of the supporting material rack 2 is provided with a first outlet 23 and a second outlet 24 connected to the trough 21; the image acquisition end of the visual inspection mechanism 3 is located directly above the trough 21 and is used to collect the outer dimensions of the nuts in the trough 21. The image information of the size is obtained by the visual inspection mechanism 3. The image acquisition end of the visual inspection mechanism 3 is electrically connected to the control unit. The first moving mechanism 4 is used to move the nuts from the inlet 22 into the trough 21. When the nut's outer dimension is qualified, the first moving mechanism 4 also discharges the nuts in the trough 21 from the first outlet 23 for discharging qualified nuts. When the nut's outer dimension is unqualified, the second moving mechanism 5 is used to discharge the nuts in the trough 21 from the second outlet 24 for discharging unqualified nuts. The first moving mechanism 4 and the second moving mechanism 5 are both electrically connected to the control unit. The first outlet 23 is provided with a guide slope 6 for unloading.

[0028] As can be seen from the above, by setting a material trough 21 on the supporting material rack 2, the first moving mechanism 4 moves the nut from the inlet 22 to the material trough 21, and the image acquisition end of the visual inspection mechanism 3 collects image information of the outer size of the nut. When the outer size is qualified, the control unit controls the first moving mechanism 4 to discharge the nut from the first outlet 23. When the outer size is unqualified, the control unit controls the second moving mechanism 5 to discharge the nut from the second outlet 24. The automatic detection of nuts and the automatic unloading of nuts after detection have a high degree of automation and good detection efficiency, which avoids the time-consuming and labor-intensive manual detection and low efficiency, and can realize automatic detection of nuts.

[0029] In this embodiment, the visual inspection mechanism 3 includes a vertical rod 31, a connecting block 32, a longitudinal rod 33 and a camera 34. The vertical rod 31 is fixedly mounted on the base 1, and the connecting block 32 is connected to the vertical rod 31 along the vertical movement. A first locking portion is provided between the connecting block 32 and the vertical rod 31, and the longitudinal rod 33 is connected to the connecting block 32 along the longitudinal movement. A second locking portion is provided between the longitudinal rod 33 and the connecting block 32. The camera 34 is connected to the end of the longitudinal rod 33 away from the connecting block 32. The camera 34 is located directly above the material trough 21. The camera 34 is electrically connected to the control unit, so that the camera 34 can collect information on the outer dimensions of the nut, and the collected information is reliable and stable. At the same time, the connection structure is adjustable, which is convenient for image acquisition and improves detection reliability.

[0030] In this embodiment, the vertical rod 31 and the longitudinal rod 33 are both cylindrical structures, which can facilitate the position of the camera 34 to be adjusted at multiple angles and facilitate visual inspection.

[0031] In this embodiment, the first locking portion and the second locking portion are both locking screws, which facilitates locking and use.

[0032] In this embodiment, a light source 35 for providing illumination for the camera 34 is provided on the vertical pole 31 , thereby providing illumination for the camera 34 and improving the accuracy of image acquisition.

[0033] In this embodiment, the first moving mechanism 4 includes a chuck 41, a transverse moving part 42 and a longitudinal moving part 43. The longitudinal moving part 43 is installed on the base 1. The longitudinal moving end of the longitudinal moving part 43 is connected to the transverse moving part 42. The transverse moving end of the transverse moving part 42 is connected to the chuck 41. The chuck 41 is arranged close to the supporting material rack 2. A slot 411 for clamping a nut is provided on the chuck 41. The transverse moving part 42 and the longitudinal moving part 43 are both electrically connected to the control part, thereby enabling the nut to be moved, which is beneficial to visual inspection.

[0034] In this embodiment, the second moving mechanism 5 includes a push cylinder 51 and a push block 52. The push cylinder 51 is installed on the base 1. The pushing end of the push cylinder 51 is connected to the push block 52. The push block 52 is located on the side of the supporting material rack 2. The push block 52 is used to push the nuts in the material trough 21 and move toward the second outlet 24. The push cylinder 51 is electrically connected to the control unit, thereby enabling the screening of qualified nuts and the removal of unqualified nuts.

[0035] The process of nut detection: the nuts are placed one by one into the inlet 22 of the supporting material, the first moving mechanism 4 moves the nuts into the material trough 21, the visual inspection mechanism 3 located above the material trough 21 works, the light source 35 provides lighting for the camera 34, the camera 34 collects image information of the outer dimensions of the nuts, and sends the image information to the control unit, the control unit determines whether the outer dimensions are qualified, when the outer dimensions are qualified, the control unit controls the first moving unit to discharge the qualified nuts from the first outlet 23, and then discharge the materials through the material guide slope 6, when the outer dimensions are unqualified, the control unit controls the second moving unit to discharge the unqualified nuts from the second outlet 24, thereby realizing the visual inspection and automatic screening of the nuts, and the whole process is automated to improve the efficiency and quality of nut detection.

[0036] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0037] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0038] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A visual inspection device for the outer dimensions of a nut, characterized in that: The invention comprises a base (1), on which a supporting material rack (2), a visual detection mechanism (3), a first moving mechanism (4), a second moving mechanism (5) and a control unit are mounted; the supporting material rack (2) is provided with a material trough (21) for lateral movement of nuts; the front end of the supporting material rack (2) is provided with an inlet (22) connected to the material trough (21); the rear end of the supporting material rack (2) is provided with a first outlet (23) and a second outlet (24) connected to the material trough (21); The image acquisition end of the visual detection mechanism (3) is located directly above the trough (21) and is used to collect image information of the outer dimensions of the nuts in the trough (21). The image acquisition end of the visual detection mechanism (3) is electrically connected to the control unit. The first moving mechanism (4) is used to move the nuts from the inlet (22) into the trough (21); when the nuts are found to be qualified, the first moving mechanism (4) further discharges the nuts in the trough (21) from the first outlet (23) for discharging qualified nuts; when the nuts are found to be unqualified, the second moving mechanism (5) is used to discharge the nuts in the trough (21) from the second outlet (24) for discharging unqualified nuts; The first moving mechanism (4) and the second moving mechanism (5) are both electrically connected to the control unit.

2. The visual inspection device for outer dimensions of nuts according to claim 1, characterized in that: The visual inspection mechanism (3) comprises a vertical rod (31), a connecting block (32), a longitudinal rod (33) and a camera (34); the vertical rod (31) is fixedly mounted on the base (1); the connecting block (32) is connected to the vertical rod (31) by vertical movement; a first locking portion is provided between the connecting block (32) and the vertical rod (31); the longitudinal rod (33) is connected to the connecting block (32) by longitudinal movement; a second locking portion is provided between the longitudinal rod (33) and the connecting block (32); the camera (34) is connected to the end of the longitudinal rod (33) away from the connecting block (32); the camera (34) is located directly above the trough (21); and the camera (34) is electrically connected to a control unit.

3. The visual inspection device for outer dimensions of nuts according to claim 2, characterized in that: The vertical rod (31) and the longitudinal rod (33) are both cylindrical structures.

4. The visual inspection device for outer dimensions of nuts according to claim 3, characterized in that: The first locking portion and the second locking portion are both locking screws.

5. The visual inspection device for outer dimensions of nuts according to claim 2, characterized in that: The vertical pole (31) is provided with a light source (35) for providing illumination for the camera (34).

6. The visual inspection device for outer dimensions of nuts according to claim 1, characterized in that: The first moving mechanism (4) comprises a chuck (41), a transverse moving portion (42) and a longitudinal moving portion (43); the longitudinal moving portion (43) is mounted on the base (1); the longitudinal moving end of the longitudinal moving portion (43) is connected to the transverse moving portion (42); the transverse moving end of the transverse moving portion (42) is connected to the chuck (41); the chuck (41) is arranged close to the supporting material rack (2); a clamping groove (411) for clamping a nut is provided on the chuck (41); and the transverse moving portion (42) and the longitudinal moving portion (43) are both electrically connected to a control portion.

7. The visual inspection device for outer dimensions of nuts according to claim 1, characterized in that: The second moving mechanism (5) includes a push cylinder (51) and a push block (52). The push cylinder (51) is installed on the base (1). The push end of the push cylinder (51) is connected to the push block (52). The push block (52) is located on the side of the supporting material rack (2). The push block (52) is used to push the nut in the material trough (21) and move toward the second outlet (24). The push cylinder (51) is electrically connected to the control unit.

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