CN216309816U

CN216309816U - Roller surface defect detection device

Info

Publication number: CN216309816U
Application number: CN202122444644.8U
Authority: CN
Inventors: 陈贤; 夏建春; 伍祁蔚
Original assignee: Changzhou Vocational Institute of Textile and Garment
Current assignee: Changzhou Vocational Institute of Textile and Garment
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2022-04-15
Anticipated expiration: 2031-10-11

Abstract

The utility model belongs to the field of mechatronics devices, and particularly relates to a roller surface defect detection device which comprises a roller surface defect detection device and is characterized by comprising a horizontal conveyor belt, end face visual detection mechanisms arranged at two sides of the horizontal conveyor belt, and a material distribution mechanism connected with the horizontal conveyor belt; the end face visual detection mechanism comprises a first PLC controller, first light sources arranged on two sides of the horizontal conveying belt and a first camera arranged behind the light sources.

Description

Roller surface defect detection device

Technical Field

The utility model relates to the field of electromechanical integrated devices, in particular to a roller surface defect detection device.

Background

Most of the existing roller quality detection methods in the market at present can be classified into manual visual detection and physical detection. The manual visual inspection is the most main detection mode at the present stage, but the manual detection has low efficiency and high working strength for workers, and is easy to cause missed detection and false detection in the detection process.

The commonly used physical detection methods mainly include eddy current flaw detection, ultrasonic wave method, magnetic particle flaw detection and the like. Although the method can also judge the surface defects of the roller, the judgment still needs to be carried out manually in the detection process, and the physical detection method has corresponding requirements on the detection environment and is more complicated.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: the utility model provides a roller surface defect detection device to solve present roller and detect the problem that the human cost is high.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the roller surface defect detection device comprises a horizontal conveyor belt, end face visual detection mechanisms arranged on two sides of the horizontal conveyor belt, and a material distribution mechanism connected with the horizontal conveyor belt; the end face visual detection mechanism comprises a first PLC controller, first light sources arranged on two sides of the horizontal conveying belt and a first camera arranged behind the light sources.

Further, horizontal conveyer belt includes the support, sets up gyro wheel, the conveying chain of winding on the gyro wheel at the support both ends.

Furthermore, the material distribution mechanism comprises a second PLC controller, an index plate, a feeding mechanism, a working face visual detection system and a discharging system, wherein the feeding mechanism, the working face visual detection system and the discharging system are respectively arranged on the index plate in the anticlockwise direction.

Further, feed mechanism includes gas claw, sets up the revolving stage in gas claw lower extreme.

Further, a pressure sensor is arranged at the bottom of the air claw.

Further, the working face visual detection system comprises a second light source arranged on one side of the index plate and a second camera arranged beside the second light source.

Further, the blanking system comprises a qualified product collecting area, a first mechanical arm, a unqualified product collecting area and a second mechanical arm.

The utility model has the beneficial effects that: according to the utility model, the surface defects of the roller are detected through the end face visual detection mechanism and the working face visual detection system, so that the labor cost is reduced and the detection process is more efficient.

Drawings

The utility model is further illustrated by the following figures and examples.

FIG. 1 is a schematic perspective view of the present apparatus for detecting surface defects of a roller;

FIG. 2 is a schematic perspective view of the horizontal conveyor of FIG. 1;

FIG. 3 is a schematic perspective view of the feed mechanism of FIG. 1;

in the figure:

a roller surface defect detecting apparatus 100;

the device comprises a horizontal conveyor belt 1, a bracket 11, a roller 12, a conveyor chain 13, a feeding port 14 and a discharging port 15;

an end face visual detection mechanism 2, a first light source 21, a first camera 22;

the device comprises a material distribution mechanism 3, an index plate 31, a feeding mechanism 32, a pneumatic claw 321, a rotary table 322, a working face visual detection system 33, a second light source 331, a second camera 332, a blanking system 34, a qualified product collecting area 341, a first manipulator 342, a defective product collecting area 343 and a second manipulator 344.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and merely illustrates the basic structure of the present invention in a schematic manner, and therefore it shows only the constitution related to the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Specifically, the roller surface defect detecting device 100 includes a horizontal conveyor belt 1, end face visual detection mechanisms 2 disposed on two sides of the horizontal conveyor belt 1, and a material distribution mechanism 3 connected to the horizontal conveyor belt 1. When the surface of the roller needs to be subjected to defect detection, the roller is firstly placed into the horizontal conveyor belt 1, the end surface defect detection is carried out on the roller through the end surface vision detection mechanism 100, and then the roller is conveyed to the material distribution mechanism 3 under the action of the horizontal conveyor belt 1 so as to complete the detection of a working surface and distinguish the roller.

Specifically, referring to fig. 1, the horizontal conveyor 1 includes a frame 11, rollers 12 disposed at both ends of the frame 11, and a conveyor chain 13 wound around the rollers 12. When the work is needed, the rollers are placed on the feeding port 14 of the horizontal conveyor belt 1, and after the detection of the end face visual detection mechanism 2, the idler wheels 12 start to rotate to drive the conveyor chain 13 and the rollers placed on the conveyor chain 13 to transmit, so that the rollers are conveyed to the material distribution mechanism 3. Since the conveyor chain 13 is not a smooth flat surface, friction against the rollers can be increased so that the rollers do not roll around during conveyance under the influence of friction.

Specifically, as shown in fig. 1, the end face visual inspection mechanism 2 includes a first PLC controller, first light sources 21 oppositely disposed on two sides of the horizontal conveyor belt 1, and first cameras 22 disposed behind the first light sources 21 on two sides. The end face visual detection mechanism 2 is arranged at the starting end of the horizontal conveying belt 1, the first light source 21 is normally bright, when the roller is placed on the horizontal conveying belt 1 and enters the end face visual detection mechanism 2, the first camera 22 collects end face images of the roller and transmits the data to the PLC to finish end face visual detection of the roller. The horizontal conveyor 1 then starts running, feeding the rollers into the distribution mechanism 3.

Specifically, as shown in fig. 1, the material distribution mechanism 3 includes a second PLC controller, an index plate 31, a feeding mechanism 32, a working surface visual detection system 33, and a blanking system 34, which are respectively disposed on the index plate in a counterclockwise direction. The feeding mechanism 32 includes a pneumatic gripper 321 and a rotary table 322 disposed at a lower end of the pneumatic gripper 321. The air claw 321 is arranged at the discharge hole 15 of the horizontal conveyor belt 1, and the bottom of the air claw 321 is provided with a pressure sensor, when the roller reaches the index plate 31 under the action of the horizontal conveyor belt 1, the pressure sensor sends a signal to the second PLC controller, so that the air claw 321 clamps the roller and fixes the roller in the air claw 321, and then the index plate 31 starts to move. The indexing disk 31 rotates in a counterclockwise direction to first bring the rollers into the work surface vision inspection system 33.

After the roller enters the working surface visual detection system 33, the second light source 331 is lighted, the second camera 332 performs first image acquisition on the working surface on one side of the roller, and after the first image acquisition is finished, the rotating platform 332 rotates to drive the air gripper 321 to rotate for 180 degrees, so that the second camera 332 performs second image acquisition on the working surface on the other side of the roller, transmits the acquired image to the PLC, and finishes the visual detection on the working surface of the roller.

The blanking system 34 includes a non-defective product collection area 341, a first robot 342, a defective product collection area 343, and a second robot 344. After the visual inspection of the end face and the working face, the defects of the rollers are identified and classified, the detected rollers are divided into qualified products and unqualified products, the results are transmitted to a second PLC, and the second PLC controls the index plate 31 to transmit the rollers. If the final determination result is a non-defective product, the index plate 31 is rotated once counterclockwise, the air gripper 321 is released, and the first robot 342 is operated to pick up and place a non-defective roller in the air gripper 321 to the non-defective product collection area. If the final determination result is that the roller is a defective product, the index plate 31 rotates counterclockwise twice, the air gripper 321 is released, and the second robot 344 operates to pick up and place the defective roller in the air gripper 321 into the defective product collection area 343.

When the roller surface defect detection device 100 is required to work, the roller is firstly placed into the horizontal conveyor belt 1, so that the roller enters the end face vision detection mechanism 2, the first light source 21 illuminates the roller, the first camera 22 collects images of two end faces of the roller, the image data are transmitted to the first PLC, and the end face detection image of the roller is judged. The judgment method refers to CN 111665251A-a surface defect visual inspection method, firstly, a reference value is set, the average value of the image gray values in each standard area is sequentially extracted and calculated, and each standard area is judged to be a background noise area or an abnormal area; averaging the differences of a plurality of standard areas in the background noise area to obtain an environmental noise difference; and comparing the gray value of each pixel in the detected product image minus the environmental noise difference value with a threshold value, and judging whether the pixel point is a defect point.

When the end face detection of the rollers is completed, the horizontal conveyor belt 1 starts to operate, and the rollers are conveyed to the material distribution mechanism 3. The roller is brought to the air claw 321 by the horizontal conveyor belt 1, a pressure sensor is arranged on the air claw 321, and after the roller falls into the air claw 321, the air claw 321 clamps and rotates once in the counterclockwise direction to drive the roller to reach the working surface visual detection system 33. Under the irradiation of the second light source 331, the second camera 332 performs a first image acquisition on the working surface on one side of the roller, after the first image acquisition is completed, the rotating platform 322 rotates to drive the air gripper 321 to rotate for 180 degrees, and then the second camera 332 performs a second image acquisition on the working surface on the other side of the roller. After the image acquisition is completed, the acquired image is determined by the working surface vision inspection system 33 in the same manner as the end surface determination method. And determining whether the roller is a qualified product or an unqualified product according to the end face visual detection result and the working face visual detection result. If the roller is a non-defective product, the index plate 31 rotates once, the air gripper 321 is released, and the first robot 342 operates to clamp the roller to the non-defective product collection area. If the result of the determination is a defective product, the index plate 31 rotates twice, the gas claw 321 is released, and the second robot 344 operates to clamp the roller to the defective product collecting region 343.

Through the end face visual detection mechanism 2 and the working face visual detection system 33, the surface defect detection of the roller does not depend on manpower any more, the labor cost is reduced, and meanwhile, the detection efficiency is improved.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed.

In light of the foregoing description of preferred embodiments in accordance with the utility model, it is to be understood that numerous changes and modifications may be made by those skilled in the art without departing from the scope of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A roller surface defect detection device is characterized by comprising a horizontal conveyor belt, end face visual detection mechanisms arranged on two sides of the horizontal conveyor belt, and a material distribution mechanism connected with the horizontal conveyor belt; the end face visual detection mechanism comprises a first PLC controller, first light sources arranged on two sides of the horizontal conveying belt and a first camera arranged behind the light sources.

2. The roller surface defect detecting apparatus of claim 1, wherein the horizontal conveyor belt comprises a frame, rollers disposed at both ends of the frame, and a conveyor chain wound around the rollers.

3. The roller surface defect detecting device of claim 1, wherein the material separating mechanism comprises a second PLC controller, an index plate, a feeding mechanism, a working surface visual detection system and a discharging system, wherein the feeding mechanism, the working surface visual detection system and the discharging system are respectively arranged on the index plate in a counterclockwise direction.

4. The apparatus of claim 1, wherein the feeding mechanism comprises a pneumatic gripper and a rotary table disposed at a lower end of the pneumatic gripper.

5. The roller surface defect detecting device of claim 4, wherein the air claw is arranged at the discharge hole of the horizontal conveyor belt, and a pressure sensor is arranged at the bottom of the air claw.

6. The roller surface defect inspection device of claim 3, wherein the working surface vision inspection system comprises a second light source disposed on one side of the index plate, and a second camera disposed adjacent to the second light source.

7. The roller surface defect detecting device of claim 3, wherein the blanking system comprises a qualified product collecting area, a first manipulator, a defective product collecting area and a second manipulator.