CN211122582U

CN211122582U - Visual detection device for defects of embryonic cloth

Info

Publication number: CN211122582U
Application number: CN201921963058.0U
Authority: CN
Inventors: 张战成; 卢剑伟
Original assignee: Henan Votex Information Technology Co ltd
Current assignee: Henan Votex Information Technology Co ltd
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2020-07-28
Anticipated expiration: 2029-11-14

Abstract

The utility model discloses a greige cloth flaw visual detection device, which comprises a frame, P L C controller, first guide roll, second guide roll and take-up roller, greige cloth movement track below is equipped with the CCD camera, be equipped with the lamp light source above it, still be equipped with the mark device that can carry out the mark to the greige cloth edge in the frame, mark device is located greige cloth movement track one side, mark device includes the ink jet head, signal receiver, CCD camera all is connected through control scheme with P L C controller, the outside of first guide roll and second guide roll is enclosed and is equipped with the lens hood with greige cloth movement track parallel and level, the lens hood forms to the ambient light and shelters from, avoid producing the interference to the CCD camera, mark device carries out the inkjet mark to the edge that the greige cloth flaw corresponds, take-up roller still can be quick after with the greige cloth flaw position of identifying.

Description

Visual detection device for defects of embryonic cloth

Technical Field

The utility model belongs to the technical field of fabrics quality inspection equipment, in particular to greige cloth flaw visual inspection device.

Background

The quality of the fabric in the clothing industry is higher and higher, the fabric is generally detected by a cloth inspecting machine before shipment, particularly, the fabric is immediately treated and graded when defects appear on the gray cloth, and the currently common cloth inspecting process generally adopts manual cloth inspecting and machine detecting. Machine inspection has achieved cloth inspection through machine vision plus artificial intelligence. Chinese patent publication No. CN106970090A discloses a visual inspection apparatus for embryo cloth defects, which at least comprises a visual inspection platform and an inkjet marking mechanism, wherein the visual inspection platform is used in combination with a multithreading-based embryo cloth quality inspection algorithm to perform defect detection and identification, and the inkjet marking mechanism performs marking. The method can automatically realize the defect detection of the gray cloth and store the defect data in the local database, and the detection speed and the detection rate of the method are far higher than those of manual detection, so that the production efficiency of a textile mill is improved, and the manual labor intensity is greatly reduced. However, the detection device often fails to detect in the implementation process, and the reason for this is that the external stray light interferes with the visual detection platform in the detection process, so that a small amount of defects are caused to fail to detect.

Disclosure of Invention

The utility model aims at the not enough of above-mentioned prior art, provide a reduce the interference of veiling glare, prevent to miss the embryo cloth flaw detection device who examines.

For solving the above technical problem, the utility model discloses a technical scheme is:

a visual detection device for defects of gray cloth comprises a rack, a P L C controller, a first guide roller, a second guide roller and a cloth collecting roller, wherein the first guide roller and the second guide roller are installed on the rack and are at the same horizontal height, the movement track of the gray cloth is circumscribed with the outer cylindrical surfaces of the first guide roller and the second guide roller, a CCD camera is arranged below the movement track of the gray cloth, a light source is arranged above the CCD camera, the CCD camera is installed on the rack and is positioned between the first guide roller and the second guide roller, a marking device capable of marking the edge of the gray cloth is further arranged on the rack and is positioned on one side of the movement track of the gray cloth, the marking device comprises an ink gun and a signal receiver, the signal receiver and the CCD camera are both connected with the P L C controller through control circuits, and a light shield flush with the movement track of the gray cloth is arranged around the outer sides of the first guide roller and the second guide roller.

The CCD camera is connected with the frame through the lifting rod, and a motor for driving the lifting rod to move up and down is arranged on the frame.

The CCD cameras are provided with at least two. Different CCD cameras can carry out nuclear again to the embryo cloth and examine, prevent to appear lou examining the phenomenon.

The ink jet head is provided in plurality side by side.

In order to prevent the deviation of the gray cloth in the conveying process, two ends of the first guide roller and the second guide roller are provided with deviation-preventing baffles.

The beneficial effects of the utility model are that greige cloth flaw vision detection device adopts back-illuminated lamp light source, light pierces through the back of greige cloth, the lens hood forms the formation of ambient light and shelters from, avoid producing the interference to the CCD camera, the image of greige cloth is shot to the CCD camera, and transmit for P L C controller through control scheme, P L C controller discerns the flaw place of greige cloth through image processing, and transmit the signal for marking device, marking device carries out the inkjet mark to the edge that the greige cloth flaw corresponds, receive the flaw position that the roller still can be quick discernment greige cloth after rolling.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a right side view of fig. 1.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

As shown in fig. 1 to 2, the visual detection device for defects of the gray cloth comprises a rack 1, a P L C controller 2, a first guide roller 3, a second guide roller 4 and a cloth collecting roller 5, wherein the first guide roller 3 and the second guide roller 4 are installed on the rack 1 and are at the same horizontal height, a gray cloth motion track 6 is circumscribed with outer cylindrical surfaces of the first guide roller 3 and the second guide roller 4, and anti-deviation baffles 11 are arranged at two ends of the first guide roller 3 and the second guide roller 4 in order to prevent the gray cloth from deviating in the conveying process.

A CCD camera 8 is arranged below the movement track 6 of the gray cloth, and a light source 7 is arranged above the gray cloth; the CCD camera 8 is arranged on the frame 1 and is positioned between the first guide roller 3 and the second guide roller 4; the CCD camera 8 is connected with the frame 1 through a lifting rod 81, and a motor for driving the lifting rod 81 to move up and down is arranged on the frame 1. The CCD cameras 8 are provided with at least two. Different CCD cameras 8 can check the greige cloth again, and the phenomenon of missing detection is prevented.

The frame 1 is further provided with a marking device 9 capable of marking the edge of the gray cloth, the marking device 9 is located on one side of the gray cloth motion track 6, the marking device 9 comprises an ink jet head 91 and a signal receiver 92, the ink jet head 91 is provided with a plurality of signal receivers 92 side by side, the signal receivers 92 and the CCD cameras 8 are both connected with the P L C controller 2 through control circuits, and the outer sides of the first guide roller 3 and the second guide roller 4 are surrounded by a light shield 10 which is aligned with the gray cloth motion track 6.

When the method works, light rays penetrate through the back of the gray cloth, the light shield 10 shields ambient light to avoid interference on the CCD camera 8, the CCD camera 8 shoots an image of the gray cloth and transmits the image to the P L C controller 2 through a control circuit, the P L C controller 2 identifies the defect of the gray cloth through image processing, the image processing process comprises the steps of 1, obtaining a shot gray cloth image, 2, preprocessing the image, enhancing the contrast of the image through histogram equalization, histogram specification or binarization, determining an enhancement method for different cloth materials through a contrast test, 3, reducing noise by Gabor wavelets, establishing a plurality of filter processing, 4, extracting defect point characteristics, comparing the preprocessed and noise-reduced image with a preset standard image, selecting a defective image, and further improving the extraction hit rate through neural network training and verification.

The P L C controller 2 judges the blank flaw point and transmits the signal to the marking device 9, the marking device 9 performs ink jet marking on the edge corresponding to the blank flaw point, and the blank flaw position can still be quickly identified after the blank is wound by the cloth winding roller 5.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, but rather is described in the embodiments and descriptions herein to illustrate the principles of the invention and that various changes and modifications may be made without departing from the spirit and scope of the invention, all of which fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents.

In the description of the present invention, it should be understood that the terms "front", "back", "left", "right", "center", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the scope of the present invention.

Claims

1. A visual detection device for defects of gray cloth comprises a rack, a P L C controller, a first guide roller, a second guide roller and a cloth collecting roller, wherein the first guide roller and the second guide roller are installed on the rack and are at the same horizontal height, the movement track of the gray cloth is circumscribed with the outer cylindrical surfaces of the first guide roller and the second guide roller, the visual detection device is characterized in that a CCD camera is arranged below the movement track of the gray cloth, a light source is arranged above the CCD camera, the CCD camera is installed on the rack and is positioned between the first guide roller and the second guide roller, a marking device capable of marking the edge of the gray cloth is further arranged on the rack and is positioned on one side of the movement track of the gray cloth, the marking device comprises an ink gun and a signal receiver, the signal receiver and the CCD camera are both connected with the P L C controller through control circuits, and a light shading cover flush with the movement track of the gray cloth is arranged around the outer sides of the first guide roller and the second guide roller.

2. The visual inspection device of greige cloth defect of claim 1, characterized in that: the CCD camera is connected with the frame through the lifting rod, and a motor for driving the lifting rod to move up and down is arranged on the frame.

3. The visual inspection device for defects of gray cloth according to claim 2, wherein: the CCD cameras are provided with at least two.

4. The visual inspection device of greige cloth defect of claim 1, characterized in that: the ink jet head is provided in plurality side by side.

5. The visual inspection device of greige cloth defect of claim 1, characterized in that: and anti-deviation baffles are arranged at the two ends of the first guide roller and the second guide roller.