Visual inspection device

Abstract

The utility model relates to a visual inspection device. The visual detection device comprises a feeding mechanism, a first detection mechanism, a conveying mechanism and a second detection mechanism, the feeding mechanism comprises a first conveying belt, and the first conveying belt is used for conveying a to-be-detected product; the first detection mechanism is arranged above the first conveyor belt and comprises a plurality of detection cameras, and the plurality of detection cameras are respectively arranged at the top and the side part of a to-be-detected product and are used for detecting the top and the side part of the to-be-detected product; the conveying mechanism is arranged above the tail end of the first conveying belt and comprises an air suction conveying belt, and the air suction conveying belt is used for adsorbing a to-be-detected product; and the second detection mechanism is arranged below the conveying mechanism, comprises a detection camera arranged at the bottom of the to-be-detected product and is used for detecting the bottom of the to-be-detected product. The visual inspection device provided by the utility model has the advantages of capability of carrying out omnibearing inspection on the to-be-detected product, high automation degree and high inspection efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to detection equipment technical field, in particular to a visual inspection device. BACKGROUND

[0002] The cup cover, bottle cover and other circular articles need to be detected after production, to detect whether there is dirt, uneven and other defects in the product, and to remove the defective products, so as to reduce the defect rate of the product.

[0003] The existing visual inspection device usually transports the products to be detected by a conveying surface, and sets a detection camera on the conveying surface to detect the products to be detected, but this can only detect the top surface and the side surface of the products to be detected. For the cup cover, bottle cover and other circular articles, there are internal bottom surface and internal side surface, and the bottom needs to be clamped to expose the bottom surface, but the clamping process of the products to be detected is complicated, and the range and intensity of clamping need to be adjusted constantly for the products to be detected of different heights, so there is a problem of low detection efficiency. SUMMARY

[0004] Therefore, the utility model discloses a visual inspection device.

[0005] A visual inspection device comprises a feeding mechanism, a first detection mechanism, a conveying mechanism and a second detection mechanism, wherein the feeding mechanism comprises a first conveying belt for transporting the products to be detected; the first detection mechanism is arranged above the first conveying belt and comprises a plurality of detection cameras arranged at the top and side of the products to be detected for detecting the top and side of the products to be detected; the conveying mechanism is arranged at the rear end of the first conveying belt and has a height higher than that of the first conveying belt and comprises a suction conveying belt for sucking the products to be detected; and the second detection mechanism is arranged below the conveying mechanism and comprises a detection camera arranged at the bottom of the products to be detected for detecting the bottom of the products to be detected.

[0006] The visual inspection device can expose the top and side of the products to be detected by the first conveying belt and expose the bottom of the products to be detected by the suction conveying belt, so as to detect the products to be detected in all directions, and the detection process is simple, the degree of automation is high, and the detection efficiency is higher.

[0007] Further, the feeding mechanism is provided with a feeding port located at the front end of the first conveying belt, and the feeding port is provided with guide blocks on both sides, and the distance between the two guide blocks gradually decreases along the conveying direction. The products to be detected are kept in the middle of the first conveying belt, so as to prevent the detection results from being deviated.

[0008] Further, the air suction conveying belt is provided with an air suction groove in the middle frame, the air suction groove sucks air downwards, and the air suction conveying belt is provided with an array of air suction holes in the conveying direction. The air suction groove can effectively prevent air dispersion, and when the product to be tested is transported to the end of the air suction conveying belt, it is out of the air suction range of the air suction groove.

[0009] Further, the overall width of the array of air suction holes is greater than the diameter of the product to be tested by 10 mm. The air can be concentrated to increase the suction force.

[0010] Further, the air suction conveying belt is a transparent belt, the air suction conveying belt is provided with a light source in the middle frame, and the light source is used for light transmission detection of the product to be tested.

[0011] Further, the second detection mechanism further comprises a detection camera arranged obliquely below the product to be tested, for detecting the internal side surface of the product to be tested.

[0012] Further, it further comprises a discharge mechanism, the discharge mechanism is arranged at the end of the air suction conveying belt, the height of the discharge mechanism is lower than the height of the air suction conveying belt, the discharge mechanism comprises a second conveying belt and a discharge port, the second conveying belt is used for transporting the product to be tested through the discharge port.

[0013] Further, it further comprises a first rejection mechanism, the first rejection mechanism is arranged on the second conveying belt frame, and comprises a blowing pipe, the blowing pipe is used for rejecting the product to be tested with defects.

[0014] Further, the first conveying belt and the second conveying belt are provided with a second rejection mechanism, the second rejection mechanism comprises a blowing pipe and a swingable mechanical arm, and is used for rejecting the product to be tested when the product to be tested is blocked during transportation.

[0015] Further, the blowing pipe is opposite to a discharge hopper, the product to be tested rejected by the blowing pipe is adjusted into the discharge hopper; a receiving box is arranged below the discharge hopper, and is used for collecting the product to be tested.

[0016] In order to better understand and implement, the following will be described in detail in conjunction with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of a visual detection device of the utility model;

[0018] Figure 2 It is a structure schematic view of a feeding mechanism of a visual detection device of the utility model;

[0019] Figure 3 It is a structure schematic view of a first detection mechanism of a visual detection device of the utility model;

[0020] Figure 4 It is a structure schematic view of the second detection mechanism of the visual detection device of the utility model;

[0021] Figure 5 It is a structure schematic view of the conveying mechanism of the visual detection device of the utility model;

[0022] Figure 6 It is a structure schematic view of the discharging mechanism of the visual detection device of the utility model.

[0023] Marked in the figure: 1, feeding mechanism, 11, feeding port, 12, first conveying belt, 111, guide block;

[0024] 2, first detection mechanism, 20, detection camera;

[0025] 3, conveying mechanism, 31, air suction conveying belt, 32, air suction groove, 311, air suction hole, 312, light source;

[0026] 4, second detection mechanism;5, discharging mechanism, 51, second conveying belt, 52, discharging port;

[0027] 6, first rejection mechanism, 60, air blowing pipe, 70, discharge hopper;7, second rejection mechanism, 71, rejection arm. DETAILED DESCRIPTION

[0028] A visual detection device includes feeding mechanism 1, first detection mechanism 2, conveying mechanism 3, second detection mechanism 4, discharging mechanism 5;The feeding mechanism 1 is equipped with feeding port 11 and first conveying belt 12, the feeding port 11 is set in the first conveying belt 12 front end, and after the feeding of the product to be detected, the first conveying belt 12 is transported.

[0029] Preferably, the feeding port 11 both sides are provided with guide block 111 along the direction of transportation of the product to be detected, and the spacing between the guide block 111 of both sides gradually decreases along the direction of transportation of the product to be detected, so that the product to be detected entering through the feeding port 11 can be transported in the middle of the first conveying belt 12, the consistency of multiple products to be detected can be kept, and the detection accuracy is improved.

[0030] The first detection mechanism 2 is used to detect the side and top of each product under test when the product under test is transported on the first conveying belt 12. Specifically, the first detection mechanism 2 comprises a plurality of detection cameras 20 arranged respectively on the side and above the product under test for detecting the side and top of the product under test. In this embodiment, the number of detection cameras 20 is four, one of which is used to detect the top of the product under test, and the other three are used to detect the side of the product under test, so as to completely detect the side and top of the product under test.

[0031] The conveying mechanism 3 is arranged at the rear end of the feeding mechanism 1 in the transportation direction, and has a height higher than that of the feeding mechanism 1. The lower surface of the conveying mechanism 3 is used to transport the product under test, so as to ensure that the lower surface of the product under test is exposed. When the product under test is transported to the end of the feeding mechanism 1, the conveying mechanism 3 adsorbs the product under test and moves the product under test. When the product under test is transported to the end of the conveying mechanism 3, the product under test is separated from the conveying mechanism 3. In this embodiment, the conveying mechanism 3 comprises an air suction conveying belt 31 and an air suction groove 32. The surface of the air suction conveying belt 31 is provided with an array of air suction holes 311 in the transportation direction. The air suction groove 32 is arranged in the middle frame of the air suction conveying belt 31. The air suction groove 32 sucks air downward, and the air suction holes 311 on the air suction conveying belt 31 at the lower end of the conveying mechanism 3 suck air. When the product under test is transported to the end of the feeding mechanism 1, the air suction conveying belt 31 adsorbs the product under test and moves the product under test. When the product under test is transported to the end of the conveying mechanism 3, the product under test is separated from the air suction range of the air suction groove 32 and falls off from the air suction conveying belt 31. The design of the air suction groove 32 can effectively avoid wind dispersion. The overall width of the air suction holes 311 on the air suction conveying belt 31 is about ten millimeters larger than the diameter of the product under test, so as to concentrate the wind and increase the suction force.

[0032] Preferably, the air suction conveying belt 31 is a polyurethane transparent optical belt.

[0033] Further, a light source 312 is arranged in the middle frame of the air suction conveying belt 31. When the product under test is transported below the light source 312, the light source 312 can perform backlight detection on the product under test, detect the light transmission of the product under test, and detect whether there is a defect on the top of the product under test.

[0034] The second detection mechanism 4 is arranged below the conveying mechanism 3, and comprises a plurality of detection cameras 20 arranged at the bottom and the oblique side of the product to be detected respectively.

[0035] The discharging mechanism 5 is arranged at the end of the conveying mechanism 3 and has a height lower than that of the conveying mechanism 3, and comprises a second conveying belt 51 and a discharging port 52; after the product to be detected is separated from the conveying mechanism 3, the product to be detected falls on the second conveying belt 51, and the second conveying belt 51 drives the detected product to continue conveying; the discharging port 52 is arranged at the end of the discharging mechanism 5, and the qualified product is conveyed to the subsequent production line through the discharging port 52, and the unqualified product can be removed by hand or a mechanical arm.

[0036] The visual detection device further comprises a first removing mechanism 6, which is arranged on the discharging mechanism 5 and comprises a blowing pipe 60 and a lower hopper 70; the blowing pipe 60 and the lower hopper 70 are arranged on the two sides of the conveying direction of the product to be detected respectively; when the first detection mechanism 2 and the second detection mechanism 4 detect the product with defects, the blowing pipe 60 blows the product with defects into the lower hopper 70 when the product with defects is conveyed to the discharging mechanism 5, so that the defective product is removed.

[0037] The visual detection device further comprises a second removing mechanism 7, which is arranged behind the feeding port 11 and in front of the discharging port 52 respectively and comprises a blowing pipe 60, a lower hopper 70 and a mechanical arm 71; the blowing pipe 60 and the mechanical arm 71 are arranged on one side of the conveying direction of the product to be detected, and the mechanical arm 71 can swing transversely; the lower hopper 70 is arranged on the other side of the conveying direction of the cup cover; when the product to be detected is blocked during the conveying process and cannot be conveyed, the blowing pipe 60 of the second removing mechanism 7 blows, the mechanical arm 71 swings, the product to be detected is removed into the lower hopper 70, so that the product to be detected can be normally conveyed, and a material collecting box is arranged below the lower hopper 70 to collect the removed product.

[0038] The first detection mechanism 2 and the second detection mechanism 4 are connected with the controller, and the photographed images are transmitted to the controller for analysis and detection.

[0039] The visual detection device, when in use, is connected with the production line of the to-be-detected products through the feeding port 11, and the to-be-detected products produced are directly fed into the feeding port 11, the guide blocks 111 with gradually smaller spacing on both sides of the feeding port 11 guide the to-be-detected products to the middle part of the first conveying belt 12, the first conveying belt 12 drives the to-be-detected products to move, the first detection mechanism 2 above the first conveying belt 12 is respectively provided with detection cameras 20 on the top and the side of the to-be-detected products, so as to complete the detection of the top surface and the side surface of the to-be-detected products; when the to-be-detected products are transported to the end of the first conveying belt 12, the air suction conveying belt 31 of the conveying mechanism 3 above absorbs the to-be-detected products and drives the to-be-detected products to move, and the light source 312 arranged in the transparent air suction conveying belt is used for detecting the light transmission property of the to-be-detected products; the second detection mechanism 4 is arranged below the conveying mechanism 3, the second detection mechanism 4 is respectively provided with detection cameras 20 below and obliquely below the to-be-detected products, the detection camera 20 below is used for detecting the inner bottom surface of the to-be-detected products, and the detection camera 20 obliquely below is used for detecting the inner side surface of the to-be-detected products; when the to-be-detected products are transported to the end of the air suction conveying belt 31, the to-be-detected products are separated from the air suction range of the air suction groove 32, and the to-be-detected products fall on the second conveying belt 51, the second conveying belt 51 drives the to-be-detected products to move, the first rejection mechanism 6 is arranged on the second conveying belt 51, and the products with defects detected by the first detection mechanism 2 and the second detection mechanism 4 are rejected, the products with serious defects and the products with slight defects are respectively blown into the discharge hopper 70 through the blowing pipe 60, a material collecting box is arranged below the discharge hopper 70 to collect, and the qualified products are transported to the discharge port 52 by the second conveying belt 51 to be discharged. When the blocking occurs during the transportation process, the second rejection mechanism 7 behind the feeding port 11 or in front of the discharge port 52 can be used for rejecting the to-be-detected products, the to-be-detected products are rejected into the discharge hopper 70 through the blowing pipe 60 and the mechanical arm 71, a material collecting box is arranged below the discharge hopper 70 to collect, and the to-be-detected products that are rejected are removed, so that the to-be-detected products on the conveying belt can be normally transported.

[0040] The utility model discloses a visual inspection device, through first conveyor belt 12 and conveying mechanism 3 to transport the product to be measured, respectively expose the top, side and bottom of the product to be measured in the transportation process, realize all -round detection of the product to be measured through the detection camera 20 of setting, after the detection is finished, on second conveyor belt 51, the product of different defect degree is rejected respectively, and it is convenient for recycling blemished goods. The utility model discloses a visual inspection device, can carry out all -round detection to the product to be measured, and the automation degree is high, and the detection efficiency is higher.

[0041] The above-mentioned embodiments only express several implementation manners of the utility model, and the description is more specific and detailed, but can not be understood as the limitation of the utility model patent scope. It should be pointed out that for ordinary skilled person in the art, on the premise of not departing from the utility model concept, can make several deformation and improvement, and the utility model also intends to include these changes and deformation.

Claims

1. A visual inspection device, characterized in that: It includes a feeding mechanism, a first detection mechanism, a conveying mechanism and a second detection mechanism; the feeding mechanism includes a first conveyor belt, which is used to transport the product to be tested; the first detection mechanism is arranged above the first conveyor belt, and includes a plurality of detection cameras, which are respectively arranged on the top and side of the product to be tested, and are used to detect the top and side of the product to be tested; the conveying mechanism is arranged at the rear end of the first conveyor belt, and its height is higher than the height of the first conveyor belt, and includes a suction conveyor belt, which is used to absorb the product to be tested; the second detection mechanism is arranged below the conveying mechanism, and includes a detection camera arranged at the bottom of the product to be tested, which is used to detect the bottom of the product to be tested.

2. The visual inspection device according to claim 1, wherein: The feeding mechanism is provided with a feeding port, and the feeding port is located at the front end of the first conveyor belt. Guide blocks are provided on both sides of the feeding port, and the distance between the two guide blocks gradually decreases along the transportation direction.

3. The visual inspection device according to claim 1, wherein: An air suction groove is provided in the middle frame of the air suction conveyor belt, and the air suction groove sucks air downward. The air suction conveyor belt is provided with air suction holes distributed in an array along the transmission direction.

4. The visual inspection device according to claim 3, wherein: The overall width of the array-distributed air suction holes is ten millimeters larger than the diameter of the product to be tested.

5. The visual inspection device according to claim 1, wherein: The suction conveyor belt is a transparent belt, and a light source is provided in the middle frame of the suction conveyor belt, and the light source is used to perform light transmission detection on the product to be tested.

6. The visual inspection device according to claim 1, wherein: The second detection mechanism further includes a detection camera disposed obliquely below the product to be detected, for detecting the inner side surface of the product to be detected.

7. The visual inspection device according to claim 1, wherein: It also includes a discharge mechanism, which is arranged at the end of the suction conveyor belt and has a height lower than that of the suction conveyor belt. It includes a second conveyor belt and a discharge port, and the second conveyor belt is used to transport the product to be tested through the discharge port.

8. The visual inspection device according to claim 7, characterized in that: It also includes a first rejection mechanism, which is arranged on the second conveyor belt frame and includes an air blowing pipe, and the air blowing pipe is used to reject defective products to be tested.

9. The visual inspection device according to claim 7, wherein: A second rejection mechanism is provided on the first conveyor belt and the second conveyor belt. The second rejection mechanism includes an air blowing pipe and a swingable mechanical arm, and is used to reject the product to be tested when blockage occurs during the transportation of the product to be tested.

10. The visual inspection device according to claim 8 or 9, characterized in that: A lower hopper is provided opposite to the air blowing pipe, and the products to be tested rejected by the air blowing pipe are transferred into the lower hopper; a receiving box is provided below the lower hopper for collecting the products to be tested.

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