Visual inspection device for screw inspection

Abstract

The visual detection device comprises a machine frame, a vibration disc extending towards the other side is arranged on one side of the upper portion of the machine frame, a containing structure rotationally connected to the machine frame is arranged at the extending end of the vibration disc, and openings capable of containing screws are formed in the outer edge of the containing structure at intervals. The outer side of the placing structure is sleeved with a blocking structure synchronously rotating along with the placing structure, and the blocking structure and an opening in the outer edge of the placing structure are arranged in a staggered mode. The placing structure and the blocking structure are jointly engaged and connected with a driving structure; the blocking structure is coaxially and rotationally connected with a stabilizing structure; a detection camera is arranged on one side of the placement structure, and a sorting structure is arranged on the other side; when the opening of the placing structure corresponds to the vibration disc, the detection camera and the opening of the placing structure are staggered. The screw detection device has the advantages that the rotating disc for bearing the screws is not affected by follow-up screw feeding, and a more accurate detection result is provided.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of screw detection, in particular to a visual detection device for screw detection. BACKGROUND

[0002] The screw machine detection is a device for detecting screws by using machine vision technology, mainly including optical systems, mechanical systems, electronic systems, computer software and hardware and other aspects of technology, collecting images of the screws by a CCD camera, and transmitting the images to a computer vision software for processing, so that the detection of the screws is realized.

[0003] The existing Chinese patent with the publication number CN204064937U discloses a visual detection mechanism, the indexing turntable is composed of a movable disc and a fixed disc, a guide rail for conveying parts is arranged on one side of the indexing turntable, and the guide rail is inclinedly arranged with the inlet end being higher and the outlet end being lower.

[0004] The detection mechanism adopts the vibrating disc to continuously feed the detection machine, and the subsequent screw abuts against the indexing turntable and transmits the vibration force to the whole indexing turntable, thereby affecting the detection precision. Practical new type content

[0005] In order to make the turntable for accommodating the screw not be affected by the subsequent screw feeding and provide more accurate detection results, the application provides a visual detection device for screw detection.

[0006] The visual detection device for screw detection provided by the application adopts the following technical scheme:

[0007] The visual detection device for screw detection comprises a rack, a vibrating disc extending towards the other side is arranged on one side of the upper portion of the rack, a placing structure rotatingly connected to the rack is arranged at the extending end of the vibrating disc, a plurality of openings capable of accommodating the screw are arranged at the outer edge of the placing structure in a spaced manner, a blocking structure rotating synchronously with the placing structure is sleeved on the outer side of the placing structure, and the blocking structure is arranged in a staggered manner with the opening at the outer edge of the placing structure; the driving structure is jointly connected to the placing structure and the blocking structure; the stable structure is coaxially and rotationally connected to the blocking structure; the detection camera is arranged on one side of the placing structure, and the sorting structure is arranged on the other side of the placing structure; when the opening of the placing structure corresponds to the vibrating disc, the detection camera is arranged in a staggered manner with the opening of the placing structure.

[0008] By adopting the above technical scheme, the vibration disc can continuously convey the screws to the placing structure, ensuring continuous feeding during detection, and the opening between the placing structure and the blocking structure is the same through synchronous rotation of the two, so that the blocking structure effectively protects the placing structure, and the introduction of the positioning structure further enhances the stability of the whole system, the detection camera can capture images when the screw is in the best position, and then the image processing technology is used to identify the quality of the screw, and the unqualified screw is automatically removed by the sorting structure, so that the fast and accurate detection and sorting integrated operation is realized.

[0009] Preferably, the placing structure comprises a placing disc, a shaft rod and a shaft sleeve, the shaft rod is fixed to the rack and extends upward, and the shaft rod is hollow; the shaft sleeve is sleeved and rotationally connected to the shaft rod; the placing disc is fixed to the top end of the shaft sleeve and is provided with openings at intervals along the edge, and the extension end of the vibration disc is provided corresponding to the edge of the placing disc, and the screw is provided through the opening and abuts against the upper surface of the placing disc.

[0010] Preferably, the blocking structure comprises a blocking ring and a center column, the center column is fixed to the rack and extends upward through the center of the shaft rod; the blocking ring is rotationally connected to the center column and is sleeved outside the placing disc, and a gap is left between the blocking ring and the placing disc, and the blocking ring is provided with openings corresponding to the openings of the placing disc.

[0011] Preferably, the driving structure comprises a driving motor, a lower end input wheel, an upper end input wheel, an intermediate wheel and a synchronous gear, the lower end input wheel is sleeved and fixed to the shaft sleeve; the driving motor is fixed to the rack, and the driving motor output wheel is engagedly connected to the lower end input wheel; the upper end input wheel is provided corresponding to the lower end input wheel, is sleeved and fixed to the blocking ring; the intermediate wheel is rotationally connected to the rack and is engagedly connected to the upper end input wheel, and the intermediate wheel is provided corresponding to the driving motor output wheel; the synchronous gear is vertically arranged, and the two ends are engagedly connected to the driving motor output wheel and the intermediate wheel respectively.

[0012] Preferably, the stabilizing structure comprises a flywheel, a stabilizing support and a stabilizing motor, one end of the stabilizing support is connected to the center column, and the other end is fixed to the rack; the stabilizing motor is sleeved and rotationally connected to the center column; the flywheel is sleeved and fixed to the stabilizing motor.

[0013] Preferably, the sorting structure comprises a discharge port, a waste port and an abutting electromagnetic valve, the discharge port is fixed to the rack and is provided corresponding to the opening of the placing disc; the waste port is fixed to the rack and is provided corresponding to the opening of the placing disc, and the discharge port and the waste port are arranged staggered; the abutting electromagnetic valve is provided corresponding to the discharge port and the waste port respectively, the abutting electromagnetic valve is fixed to the center column and extends outward; when the discharge port and the waste port correspond to the opening of the placing disc, the detection camera is arranged staggered with the opening of the placing disc.

[0014] Preferably, the vibration disc is elastically placed in the rack.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: the design of the vibration disc can continuously convey screws into the placement structure, ensuring continuous feeding during the detection process, the synchronous rotation of the placement structure and the blocking structure, the same opening between the two, effectively protecting the placement structure by the blocking structure, the introduction of the positioning structure further enhances the stability of the entire system, the detection camera can capture images when the screw is in the best position, and then identify the quality of the screw through image processing technology, and the unqualified screw will be automatically removed by the sorting structure, thereby realizing fast and accurate detection and sorting integrated operation. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the top structure of the embodiment of the present application;

[0017] Figure 2 is a schematic diagram of the bottom structure of the embodiment of the present application;

[0018] Figure 3 is an enlarged view of part A of Figure 1 .

[0019] Reference signs: 1, rack; 2, vibration disc; 3, placement structure; 31, placement disc; 32, shaft; 33, shaft sleeve; 4, blocking structure; 41, blocking ring; 42, center column; 5, driving structure; 51, driving motor; 52, lower end input wheel; 53, upper end input wheel; 54, intermediate wheel; 55, synchronous gear; 6, stabilizing structure; 61, flywheel; 62, stabilizing bracket; 63, stabilizing motor; 7, sorting structure; 71, discharge port; 72, waste port; 73, abutting electromagnetic valve; 8, detection camera. DETAILED DESCRIPTION

[0020] The present application will be further described in detail below with reference to the accompanying drawings.

[0021] The embodiment of the present application discloses a visual detection device for screw detection, referring to Figure 1 , 2 , including a rack 1, a vibration disc 2 extending from one side to the other side is arranged above one side of the rack 1, the vibration disc 2 is placed on the rack 1 by the support of the air bag or the oil bag, so as to avoid vibration transmission, the extending end of the vibration disc 2 is provided with a placement structure 3 for placing screws, the placement structure 3 includes a placement disc 31, a shaft 32 and a shaft sleeve 33, the shaft 32 is fixed to the rack 1 and extends upward, and the shaft 32 is hollow; the shaft sleeve 33 is sleeved and rotationally connected to the shaft 32; the placement disc 31 is fixed to the top end of the shaft sleeve 33 and is provided with openings at intervals along the edge, the extending end of the vibration disc 2 is arranged corresponding to the edge of the placement disc 31, and the screw is arranged in the opening and abuts against the upper surface of the placement disc 31.

[0022] Referring to Figure 1 ,2 The barrier structure 4 is arranged outside the placing disc 31, and the barrier structure 4 comprises a barrier ring 41 and a center column 42. The center column 42 is fixed to the rack 1 and extends upward through the center of the shaft 32. The barrier ring 41 is rotationally connected to the center column 42 and is arranged outside the placing disc 31. A gap is left between the barrier ring 41 and the placing disc 31. An opening is arranged on the outside of the barrier ring 41, which corresponds to the opening of the placing disc 31. Thus, the screws in the vibration disc 2 cannot abut the area of the placing disc 31 except the opening.

[0023] Referring to Figure 1 , 3 The placing disc 31 and the barrier ring 41 are driven to rotate synchronously by the driving structure 5. The driving structure 5 comprises a driving motor 51, a lower end input wheel 52, an upper end input wheel 53, an intermediate wheel 54 and a synchronous gear 55. The lower end input wheel 52 is arranged outside the shaft sleeve 33. The driving motor 51 is fixed to the rack 1, and the output wheel of the driving motor 51 is meshingly connected to the lower end input wheel 52. The upper end input wheel 53 is arranged corresponding to the lower end input wheel 52 and is arranged outside the barrier ring 41. The intermediate wheel 54 is rotationally connected to the rack 1 and is meshingly connected to the upper end input wheel 53. The synchronous gear 55 is arranged vertically, and the two ends thereof are meshingly connected to the output wheel of the driving motor 51 and the intermediate wheel 54.

[0024] Referring to Figure 1 , 2 The barrier ring 41 is provided with the stability structure 6 for improving stability. The stability structure 6 comprises a flywheel 61, a stability support 62 and a stability motor 63. One end of the stability support 62 is connected to the center column 42, and the other end thereof is fixed to the rack 1. The stability motor 63 is arranged outside the center column 42. The flywheel 61 is arranged outside the stability motor 63.

[0025] Referring to Figure 1 , 2 One side of the placing disc 31 is provided with the detection camera 8. The detection camera 8 is provided with the sorting structure 7 at the rear end thereof. The sorting structure 7 comprises a discharge port 71, a waste port 72 and an abutting electromagnetic valve 73. The discharge port 71 is fixed to the rack 1 and is arranged corresponding to the opening of the placing disc 31. The waste port 72 is fixed to the rack 1 and is arranged corresponding to the opening of the placing disc 31. The discharge port 71 and the waste port 72 are arranged in a staggered manner. The abutting electromagnetic valve 73 is arranged corresponding to the discharge port 71 and the waste port 72. The abutting electromagnetic valve 73 is fixed to the center column 42 and extends outward. When the opening of the placing disc 31 corresponds to the vibration disc 2, the discharge port 71 and the waste port 72 correspond to the opening of the placing disc 31. The detection camera 8 is arranged in a staggered manner with the opening of the placing disc 31.

[0026] The working process of the present application is: the driving motor 51 drives the placement disc 31 to rotate, and the barrier ring 41 is linked by the synchronous gear 55 to make them rotate synchronously but not directly contact; the vibration disc 2 continuously supplies screws to the placement disc 31, and the screws enter the gap of the placement disc 31 by abutting against the subsequent screws, and then rotate towards the detection camera 8.

[0027] When the barrier ring 41 continues to rotate and the vibration disc 2 corresponds to the side wall of the barrier ring 41, the subsequent screws cannot fall due to abutting, at this time, the vibration of the subsequent screws is transmitted to the barrier ring 41, and the barrier ring 41 is provided with a rotating flywheel 61, the flywheel 61 has great inertia, and the barrier ring 41 and the flywheel 61 are coaxially connected, so that the barrier ring 41 can be kept stable and the influence of the screw vibration is reduced, and at the same time, the barrier ring 41 blocks the subsequent screws, at this time, the screws on the vibration disc 2 do not need to be fed or discharged, the detection camera 8 detects the screws corresponding to the gap of the placement disc 31, which can reduce the influence of external force.

[0028] The screws after detection are pushed out by the abutting electromagnetic valve 73 corresponding to the discharge port 71 after being determined qualified by the computer, and are pushed out by the abutting electromagnetic valve 73 corresponding to the waste port 72 if determined unqualified.

[0029] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A vision inspection apparatus for screw inspection, comprising a frame (1), characterized in that: The rack (1) is provided with a vibration disc (2) extending towards the other side on one side above the rack (1), the extending end of the vibration disc (2) is provided with a placing structure (3) rotatably connected to the rack (1), the outer edge of the placing structure (3) is provided with openings capable of accommodating screws at intervals, the placing structure (3) is provided with a blocking structure (4) rotatable synchronously with the placing structure (3) on the outer side, and the blocking structure (4) is arranged in a staggered manner with the openings of the placing structure (3) on the outer edge; the placing structure (3) and the blocking structure (4) are jointly connected with a driving structure (5); the blocking structure (4) is coaxially rotatably connected with a stabilizing structure (6); one side of the placing structure (3) is provided with a detection camera (8), and the other side is provided with a sorting structure (7); when the opening of the placing structure (3) corresponds to the vibration disc (2), the detection camera (8) is staggered with the opening of the placing structure (3).

2. The visual inspection apparatus for screw inspection according to claim 1, wherein: The placing structure (3) comprises a placing disc (31), a shaft rod (32) and a shaft sleeve (33), the shaft rod (32) is fixed to the rack (1) and extends upward, and the shaft rod (32) is hollow; the shaft sleeve (33) is rotatably connected to the shaft rod (32); the placing disc (31) is fixed to the top end of the shaft sleeve (33) and is provided with openings at intervals along the edge, the extending end of the vibration disc (2) is arranged corresponding to the edge of the placing disc (31), and the screws are arranged in the openings and abut against the upper surface of the placing disc (31).

3. The vision inspection apparatus for screw inspection according to claim 2, wherein: The blocking structure (4) comprises a blocking ring (41) and a center column (42), the center column (42) is fixed to the rack (1) and extends upward through the center of the shaft rod (32); the blocking ring (41) is rotatably connected to the center column (42) and is sleeved on the outer side of the placing disc (31), and a gap is left between the blocking ring (41) and the placing disc (31), and the outer side of the blocking ring (41) is provided with openings corresponding to the openings of the placing disc (31).

4. The vision inspection apparatus for screw inspection according to claim 3, wherein: The driving structure (5) comprises a driving motor (51), a lower end input wheel (52), an upper end input wheel (53), an intermediate wheel (54) and a synchronous gear (55), the lower end input wheel (52) is sleeved and fixed to the shaft sleeve (33); the driving motor (51) is fixed to the rack (1), and the output wheel of the driving motor (51) is engaged with the lower end input wheel (52); the upper end input wheel (53) is arranged corresponding to the lower end input wheel (52), and is sleeved and fixed to the blocking ring (41); the intermediate wheel (54) is rotatably connected to the rack (1) and is engaged with the upper end input wheel (53), and the intermediate wheel (54) is arranged corresponding to the output wheel of the driving motor (51); the synchronous gear (55) is vertically arranged, and the two ends are respectively engaged with the output wheel of the driving motor (51) and the intermediate wheel (54).

5. The vision inspection apparatus for screw inspection according to claim 3, wherein: The stabilizing structure (6) comprises a flywheel (61), a stabilizing support (62) and a stabilizing motor (63), one end of the stabilizing support (62) is connected to the center column (42), and the other end is fixed to the rack (1); the stabilizing motor (63) is sleeved and rotatably connected to the center column (42); the flywheel (61) is sleeved and fixed to the stabilizing motor (63).

6. The vision inspection apparatus for screw inspection according to claim 3, wherein: The sorting structure (7) comprises a discharge port (71), a waste port (72) and an abutting electromagnetic valve (73), the discharge port (71) is fixed to the rack (1) and is arranged corresponding to the opening of the placing disc (31); the waste port (72) is fixed to the rack (1) and is arranged corresponding to the opening of the placing disc (31), and the discharge port (71) and the waste port (72) are arranged in a staggered manner; the abutting electromagnetic valve (73) is arranged corresponding to the discharge port (71) and the waste port (72) respectively, and the abutting electromagnetic valve (73) is fixed to the center column (42) and extends outward; when the discharge port (71) and the waste port (72) correspond to the opening of the placing disc (31), the detection camera (8) is arranged in a staggered manner with the opening of the placing disc (31).

7. The vision inspection apparatus for screw inspection according to claim 1, wherein: The vibration disc (2) is elastically placed in the rack (1).

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