Visual inspection screening device

Abstract

The utility model discloses a visual inspection screening device, which is characterized in that a transparent disc is rotatably mounted on a rack, the upper end face of the transparent disc forms a placing plane of a brazing ring, a camera is positioned above the transparent disc, a light source plate is positioned below the transparent disc and corresponds to the camera in vertical position, and a collecting device is positioned below the transparent disc; the upper end openings of the first funnel and the second funnel are located on the periphery of the transparent disc, the lower end of the first funnel is communicated with the first material collecting disc, the lower end of the second funnel is communicated with the second material collecting disc, and the air injection device is located above the transparent disc and comprises a first nozzle and a second nozzle. According to the device, the brazing rings are visually detected on the transparent disc one by one through photographing of the camera, qualified products are screened after detection, the detection result is more accurate, and the detection efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of brazing ring detection equipment, and more specifically to a visual detection and screening device. Background Art

[0002] The brazing ring is an important part of the air-conditioning refrigeration pipe and plays a vital role in the working process of the air-conditioning. As an important link in the air-conditioning, the quality of the brazing ring is an important factor affecting the quality of the air-conditioning. Unqualified brazing rings will cause the air-conditioning refrigeration pipe to have loose welding and affect the refrigeration effect of the air-conditioning, and then maintenance personnel will be required to come to the site to repair the air-conditioning, affecting the brand reputation and consumer experience. Therefore, to ensure the quality of the air-conditioning, the quality of each small link must be strictly controlled. In factories with smaller brazing ring production capacity, manual quality inspection of brazing rings is generally chosen. Manual inspection of brazing rings has the following disadvantages: 1. The test results depend on the subjective judgment of the inspector; 2. The inspection is inefficient and narrow in range; 3. The labor intensity of the inspectors is high and they are prone to visual fatigue; 4. Missed detection and false detection occur from time to time, so a technical solution is needed to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art, to automatically and accurately detect qualified brazing rings, and to provide a visual detection and screening device.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a visual detection and screening device, comprising a transparent disc, a camera, a light source plate, a collecting device, an air jet device, and a frame. The transparent disc is rotatably mounted on the frame, the upper end surface of the transparent disc forms a placement plane for a brazing ring, the camera is located above the transparent disc, the light source plate is located below the transparent disc and corresponds to the upper and lower positions of the camera, the collecting device is located below the transparent disc, the collecting device comprises a first collecting disc, a first funnel, a second collecting disc, and a second funnel, the upper end openings of the first funnel and the second funnel are located at the outer periphery of the transparent disc, the lower end of the first funnel is connected to the first collecting disc, and the lower end of the second funnel is connected to the second collecting disc, the air jet device is located above the transparent disc, the air jet device comprises a first nozzle and a second nozzle, the air outlet of the first nozzle opens toward the upper end of the first funnel, the air outlet of the second nozzle opens toward the upper end of the second funnel, and the air jet device is connected to an air source.

[0006] Furthermore, it includes a paddle, which is located above the transparent disc, and the lower end surface of the paddle is close to the upper end surface of the transparent disc. The transparent disc can rotate and the brazing ring can be moved by the paddle, and the paddle is pushed to the corresponding position detected by the camera.

[0007] Furthermore, the transparent disc includes a first pulley, the first pulley is located below the transparent disc, the frame is installed with a first motor, the output shaft of the first motor is installed with a second pulley, and the second pulley and the first pulley are driven by a belt.

[0008] Furthermore, the upper end of the first funnel is higher than the upper end surface of the transparent disc, the first funnel is provided with a feed port, the feed port opens toward the center position of the transparent disc, and the first funnel and the second funnel have the same structure.

[0009] Furthermore, a plurality of trays are installed on the upper end surfaces of the first collecting tray and the second collecting tray, and the plurality of trays are distributed in a ring shape, the lower end of the first funnel is located above one of the trays of the first collecting tray, and the lower end of the second funnel is located above one of the trays of the second collecting tray.

[0010] Furthermore, the collecting device includes a second motor, which is fixedly mounted on the frame, the second collecting tray is located below the first collecting tray, the second motor is located below the second collecting tray, and the second motor drives the first collecting tray and the second collecting tray to rotate.

[0011] The beneficial effects of the utility model are:

[0012] The utility model places the brazing ring on the upper end surface of the transparent disc, and uses a camera to take pictures of the brazing rings one by one for visual inspection; qualified products are rotated to the first funnel, blown into the first funnel by the first nozzle, and fall into the first collecting tray; unqualified products are rotated to the second funnel, blown into the second funnel by the second nozzle, and fall into the second collecting tray; the visual inspection has high accuracy and high work efficiency, and qualified products and unqualified products are screened. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of this embodiment.

[0014] Figure 2 It is a side view of this embodiment.

[0015] Figure 3 This is an application scenario diagram of this embodiment.

[0016] Figure numerals: 1. transparent disc; 11. first pulley; 2. paddle; 3. camera; 4. light source board; 5. collecting device; 51. first collecting tray; 511. first funnel; 5111. feed port; 52. second collecting tray; 521. second funnel; 53. tray; 6. first motor; 61. second pulley; 7. belt; 8. second motor; 9. jet device; 91. first nozzle; 92. second nozzle; 10. frame; 101. brazing ring; 102. receiving device; 103. preliminary screening device; 104. AGV cruising device; 105. industrial computer. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in this embodiment to clearly and completely describe the technical solution in this embodiment. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0018] like Figure 1 , Figure 2 , Figure 3As shown, the present embodiment discloses a visual inspection and screening device, comprising a transparent disc 1, a paddle 2, a camera 3, a light source board 4, a collecting device 5, and an air jet device 9. The transparent disc 1 is rotatably mounted on a frame 10, and the frame 10 is mounted on an AGV cruise device 104. The AGV cruise device 104 can move automatically according to a program. The upper end surface of the transparent disc 1 forms a placement plane for a brazing ring 101. The transparent disc 1 is located on one side of a preliminary screening device 103. The transparent disc 1 comprises a first pulley 11, and the first pulley 11 is located below the transparent disc 1. The frame 10 is mounted with a first motor 6, and a second pulley 61 is mounted on an output shaft of the first motor 6. The second pulley 61 and the first pulley 11 are driven by a belt 7. The brazing ring 101 can detach from the preliminary screening device 103 and fall into the upper end surface of the transparent disc 1. The paddle 2 is located above the transparent disc 1. The paddle The lower end surface of 2 is close to the upper end surface of the transparent disc 1, the transparent disc 1 can rotate and the brazing ring 101 can be moved by the paddle 2, the brazing ring 101 is blocked by the paddle 2 and moves to the corresponding position in the direction away from the center of the transparent disc 1, the camera 3 is located above the transparent disc 1, the transparent disc 1 is made of transparent glass, the light source board 4 is located below the transparent disc 1 and corresponds to the upper and lower positions of the camera 3, the brazing ring 101 passes between the light source board 4 and the camera 3, the camera 3 takes a photo and transmits the photo information to the industrial computer 105, the industrial computer 105 processes and analyzes the photo of the brazing ring 101, compares it with the standard size, determines whether the brazing ring 101 is qualified, and feeds back the qualified information to the PLC main control, and simultaneously feeds back the error information to the production system, so that photographic visual inspection is more accurate than manual inspection and has higher inspection efficiency.

[0019] For example: different models of brazing rings 101 have different error values. According to the requirement of measuring the minimum error, the brazing ring 101 detection equipment uses a lens with a focal length of 50 and a distortion rate of 0.01%, and a camera with a resolution of 4504×4096 and a frame rate of 21.4. The gap between the camera 3 and the transparent disk 1 is adjusted according to the focal length, and the rotation speed of the first motor 6 is adjusted according to the frame rate to reduce the ghosting and ghosting phenomena when the camera 3 takes pictures during the detection process, thereby improving work efficiency.

[0020] like Figure 1 , Figure 2 , Figure 3As shown, the collecting device 5 is located below the transparent disc 1, and the collecting device 5 includes a first collecting tray 51, a first funnel 511, a second collecting tray 52, a second funnel 521, and a second motor 8. The second motor 8 is fixedly installed on the frame 10, and the second collecting tray 52 is located below the first collecting tray 51. The second motor 8 is located below the second collecting tray 52. ​​The second motor 8 drives the first collecting tray 51 and the second collecting tray 52 to rotate. The first collecting tray 51 and the second collecting tray 52 are distributed up and down and are driven to rotate by the second motor 8. The collecting tray 51 and the second collecting tray 52 have the same structure. The upper end surfaces of the first collecting tray 51 and the second collecting tray 52 are provided with multiple trays 53. The multiple trays 53 are distributed in a ring shape on the upper end surfaces of the first collecting tray 51 and the second collecting tray 52. ​​The trays 53 can accommodate brazing rings 101 of different sizes. When the brazing ring 101 detection equipment frequently samples and detects brazing rings 101 of various sizes, different brazing rings 101 can fall into different trays 53 for classification by rotating the first collecting tray 51 and the second collecting tray 52.

[0021] The first funnel 511 and the second funnel 521 are fixedly installed on the mobile base through a bracket. The upper end openings of the first funnel 511 and the second funnel 521 are located at the periphery of the transparent disc 1. The upper end of the first funnel 511 is higher than the upper end surface of the transparent disc 1. The first funnel 511 is provided with a feed inlet 5111, and the feed inlet 5111 opens toward the center of the transparent disc 1. The first funnel 511 is higher than the upper end surface of the transparent disc 1 and can be used to feed the brazing ring 101 when the brazing ring 101 is blown by airflow. 01 plays a blocking role to prevent the brazing ring 101 from being blown out of the first funnel 511. The first funnel 511 and the second funnel 521 have the same structure. The lower end of the first funnel 511 extends to the top of the first collecting tray 51, and the lower end of the second funnel 521 extends to the top of the second collecting tray 52. ​​The lower end of the first funnel 511 is located above one of the trays 53 of the first collecting tray 51, and the lower end of the second funnel 521 is located above one of the trays 53 of the second collecting tray 52.

[0022] The jet device 9 is located above the transparent disc 1. The jet device 9 is connected to the air source. The jet device 9 includes a first nozzle 91 and a second nozzle 92. The air outlet of the first nozzle 91 opens toward the upper end of the first funnel 511, and the air outlet of the second nozzle 92 opens toward the upper end of the second funnel 521. After the brazing ring 101 is visually inspected, if the inspection result is qualified, the industrial computer 105 transmits the information that the next brazing ring 101 is qualified to the PLC main control, and the PLC drives the electromagnetic valve of the jet device 9 for collecting qualified products through delay driving to blow the qualified brazing ring 101 into the first funnel 511 corresponding to the qualified product, and sends it to the first collecting tray 51. If the inspection result of the brazing ring 101 is unqualified, the PLC drives the electromagnetic valve of the jet device 9 for collecting unqualified products through delay driving to blow the unqualified brazing ring 101 into the second funnel 521 corresponding to the unqualified product, and sends it to the second collecting tray 52.

[0023] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A visual inspection and screening device, characterized in that: The invention comprises a transparent disc (1), a camera (3), a light source plate (4), a collecting device (5), an air jet device (9), and a frame (10); the transparent disc (1) is rotatably mounted on the frame (10); the upper end surface of the transparent disc (1) forms a placement plane for a brazing ring (101); the camera (3) is located above the transparent disc (1); the light source plate (4) is located below the transparent disc (1) and corresponds to the upper and lower positions of the camera (3); the collecting device (5) is located below the transparent disc (1); the collecting device (5) comprises a first collecting disc (51), a first funnel (511), a second collecting disc (52), and a second funnel (52 1), the upper openings of the first funnel (511) and the second funnel (521) are located on the outer periphery of the transparent disc (1), the lower end of the first funnel (511) is connected to the first collecting disc (51), and the lower end of the second funnel (521) is connected to the second collecting disc (52), the jet device (9) is located above the transparent disc (1), the jet device (9) comprises a first nozzle (91) and a second nozzle (92), the air outlet of the first nozzle (91) is opened toward the upper end of the first funnel (511), and the air outlet of the second nozzle (92) is opened toward the upper end of the second funnel (521), and the jet device (9) is connected to an air source.

2. A visual inspection and screening device according to claim 1, characterized in that: The invention comprises a paddle (2), wherein the paddle (2) is located above the transparent disc (1), the lower end surface of the paddle (2) is close to the upper end surface of the transparent disc (1), the transparent disc (1) can be rotated and the brazing ring (101) can be moved by the paddle (2), and the paddle (2) is moved to a corresponding position detected by the camera (3).

3. A visual inspection and screening device according to claim 1, characterized in that: The transparent disc (1) comprises a first pulley (11), the first pulley (11) is located below the transparent disc (1), the frame (10) is installed with a first motor (6), the output shaft of the first motor (6) is installed with a second pulley (61), and the second pulley (61) and the first pulley (11) are driven by a belt (7).

4. A visual inspection and screening device according to claim 1, characterized in that: The upper end of the first funnel (511) is higher than the upper end surface of the transparent disc (1); the first funnel (511) is provided with a feed port (5111), and the feed port (5111) opens toward the center position of the transparent disc (1); the first funnel (511) and the second funnel (521) have the same structure.

5. A visual inspection and screening device according to claim 1, characterized in that: A plurality of trays (53) are installed on the upper end surfaces of the first collecting tray (51) and the second collecting tray (52), and the plurality of trays (53) are distributed in a ring shape. The lower end of the first funnel (511) is located above one of the trays (53) of the first collecting tray (51), and the lower end of the second funnel (521) is located above one of the trays (53) of the second collecting tray (52).

6. A visual inspection and screening device according to claim 1, characterized in that: The collecting device (5) comprises a second motor (8), the second motor (8) is fixedly mounted on the frame (10), the second collecting tray (52) is located below the first collecting tray (51), the second motor (8) is located below the second collecting tray (52), and the second motor (8) drives the first collecting tray (51) and the second collecting tray (52) to rotate.

Images