CN114192435A

CN114192435A - Fabric detection equipment

Info

Publication number: CN114192435A
Application number: CN202111310222.XA
Authority: CN
Inventors: 俞淇纲; 宋广军; 孔令军
Original assignee: Shenzhen Qianhai Pengying Digital Software Operation Co ltd
Current assignee: Shenzhen Qianhai Pengying Digital Software Operation Co ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-03-18

Abstract

The invention discloses fabric detection equipment which comprises a rack, a feeding mechanism, a receiving mechanism, a tensioning mechanism, a first light source, a first laser, a first camera and a control module, wherein the feeding mechanism is arranged on the rack; through setting up high-speed camera with one side or both sides of surface fabric, shoot the surface fabric that passes through high-speed camera and acquire corresponding image information, when there is the hole of certain diameter on the surface fabric surface simultaneously, the formation of image of line type laser on the surface fabric surface is the state of disconnection, can judge from this that the flaw type in flaw area is the hole or spot, compares manual detection, and its efficiency is higher.

Description

Fabric detection equipment

Technical Field

The invention relates to the field of textiles, in particular to fabric detection equipment.

Background

With the improvement of living standard of people, the requirements on fabrics produced by textile enterprises are higher and higher; after the fabric is processed, the fabric needs to be detected to find out flaws and stains. At present, each manufacturer adopts a traditional cloth inspecting machine to detect the fabric when detecting the fabric, so that the light brightness must be increased, the equipment running speed is reduced for ensuring the detection precision, and meanwhile, the human eyes are easy to fatigue due to strong light reflection, so that the production efficiency and the detection precision are reduced.

Disclosure of Invention

The invention aims to solve the problems in the prior art, provides fabric detection equipment, and can solve the problem of low human eye detection efficiency in the prior art.

In order to achieve the purpose, the invention provides fabric detection equipment, which is characterized by comprising the following components:

a frame;

the feeding mechanism is arranged at one end of the rack and used for installing the fabric to be detected;

the material receiving mechanism is arranged at the other end of the rack and used for rolling the fabric;

the tensioning mechanism is arranged between the feeding mechanism and the receiving mechanism and used for tensioning the fabric;

the first light source is arranged towards one surface of the fabric;

the first laser is arranged on one side of the first light source and used for forming a first projection area on the fabric;

the first camera is arranged on one side of the first light source and used for acquiring image information of one surface of the fabric, and the first projection area is located in a shooting range of the first camera;

and the control module is electrically connected with the feeding mechanism, the receiving mechanism, the first light source, the first laser and the first camera.

In one embodiment, the feeding mechanism comprises:

the feeding roller is hinged with the rack;

the feeding motor is arranged on the rack and drives the feeding roller to rotate;

receiving agencies includes:

the material receiving roller is opposite to and parallel to the material feeding roller and is hinged with the rack;

and the material receiving motor is arranged on the rack and drives the feeding roller to rotate.

In one embodiment, the tensioning mechanism comprises:

the mounting frame is arranged between the feeding roller and the receiving roller;

the tensioning roller is hinged on the mounting frame;

the air spring is used for connecting the mounting frame and the rack;

the tensioning roller is parallel to the feeding roller, and the outer wall of the tensioning roller is in contact with the fabric and is used for tensioning the fabric.

In one embodiment, the fabric testing apparatus further comprises a first cleaning mechanism comprising:

the first shell is arranged on the rack, and an opening is formed in one surface, facing the fabric, of the first shell;

the first cleaning roller is hinged in the first shell, and the outer wall of the cambered surface of the first cleaning roller extends out of the opening and is in contact with the fabric;

the first brush is arranged in the first shell and is in contact with the part, located in the first shell, of the outer wall of the cambered surface of the first cleaning roller;

a first dust collector communicated with the inside of the first housing.

In one embodiment, the fabric testing apparatus further comprises a second cleaning mechanism comprising:

a second housing disposed opposite to the first housing;

the second cleaning roller is hinged in the second shell, and the outer wall of the cambered surface of the second cleaning roller is in contact with one surface, far away from the first cleaning roller, of the fabric;

the second brush is arranged in the second shell and is in contact with the part, located in the second shell, of the outer wall of the cambered surface of the second cleaning roller;

and the second dust collector is communicated with the inside of the second shell.

In one embodiment, the fabric inspection apparatus further comprises:

a second light source disposed opposite to the first light source;

the second laser is used for forming a second projection area on one surface, far away from the first laser, of the fabric;

and the second camera is arranged at the opposite side of the first camera and used for acquiring the image information of the other side of the fabric, and the second projection area is positioned in the shooting range of the second camera.

In one embodiment, the fabric testing apparatus further comprises a roller code electrically connected to the control module.

In an embodiment, the control module is configured to compare the image information acquired by the first camera and the second camera with a fabric image with a quality defect in a database to determine a defect type of a surface quality defect region of the fabric.

In one embodiment, the fabric detection device further comprises a labeling mechanism arranged on one side of the material receiving roller, and the labeling mechanism comprises:

the roller assembly comprises a first roller and a second roller for mounting the label paper tape and a stepping motor for driving the first roller and the second roller to rotate;

a separating plate, one end of the label paper tape is arranged on the first roller, the other end of the label paper tape is conveyed to one edge of the separating plate along one side surface of the separating plate, the label paper tape is conveyed to the second roller around the edge along the other opposite side surface, and the label paper is separated from the label paper tape at the edge;

the label pressing roller is arranged on one side of the separating plate;

and the driving cylinder drives the label pressing roller wheel to move towards the material receiving roller, so that the separated label is attached to the fabric.

In one embodiment, the fabric detection device further comprises a laser marker arranged below the separation plate, and the laser marker is electrically connected with the control module and used for marking the label paper.

The invention has the beneficial effects that: according to the invention, the high-speed camera and the laser are arranged on one side or two sides of the fabric, the passing fabric is photographed by the high-speed camera to obtain corresponding image information, and meanwhile, when holes with a certain diameter exist on the surface of the fabric, the linear laser in the projection area irradiated by the laser forms a disconnected state on the surface of the fabric, so that the control module can be assisted to judge whether the defect type of the defect area is a hole or a stain, and compared with manual detection, the efficiency is higher.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of one embodiment of a fabric inspection apparatus of the present invention;

FIG. 2 is a schematic view of a first projection region in the embodiment of FIG. 1;

FIG. 3 is a schematic view of a second projection region in the embodiment of FIG. 1;

FIG. 4 is a schematic structural view of a first cleaning mechanism in the embodiment of FIG. 1;

FIG. 5 is a schematic structural view of a marking mechanism in another embodiment of the fabric inspection apparatus of the present invention;

FIG. 6 is a schematic structural view of the marking mechanism of the embodiment of FIG. 4;

fig. 7 is a schematic view of the label and web roll configuration of the embodiment of fig. 1.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				11	Chassis	12	Top frame
20	Feeding mechanism	21	Feed roll
				22	Feeding motor	30	Material receiving mechanism
31	Material collecting roller	32	Material receiving motor
				40	Tensioning mechanism	41	Mounting rack
42	Tension roller	43	Air spring
				50	First cleaning mechanism	51	First shell
52	First cleaning roller	53	First brush
				54	First vacuum cleaner	60	Second cleaning mechanism
71	First light source	72	First laser
				73	First camera	81	Second light source
82	Second laser	83	Second camera
				84	Roller code recorder	85	Spring
90	Labeling mechanism	91	Mounting plate
				92	First roller	93	Second roller
94	Separating plate	95	Marking roller
				96	Driving cylinder

The objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "A and/or B" as an example, including either the A aspect, or the B aspect, or both A and B satisfied aspects. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides fabric detection equipment, and referring to fig. 1 to 7, the fabric detection equipment comprises a rack, a feeding mechanism 20, a receiving mechanism 30, a tensioning mechanism 40, a first light source 71, a first laser 72, a first camera 73 and a control module. In this embodiment, the frame includes a bottom frame 11, a top frame 12 and a support rod connecting the bottom frame 11 and the top frame 12, and the feeding mechanism 20 is disposed at one end of the bottom frame 11 and is used for installing the fabric to be detected; the material receiving mechanism 30 is arranged at the other end of the bottom frame 11 and used for rolling the fabric.

Specifically, the feeding mechanism 20 includes a feeding roller 21 hinged to the frame, two support columns extending upward from the bottom frame 11, and the feeding roller 21 is hinged to the support columns. The shaft of the feeding roller 21 penetrates through the supporting column to extend outwards, the feeding motor 22 is arranged on the outer side of the supporting column, and transmission is achieved through a gear set which is connected with the rotating shaft of the feeding roller 21 and the rotating shaft of the feeding motor 22.

Two supporting columns are also arranged at one end of the bottom frame 11 far away from the feeding roller 21 in an upward extending mode, and the supporting columns arranged on the material receiving roller 31 are hinged with the supporting columns. The shaft of the material receiving roller 31 penetrates through the supporting column to extend outwards, the material receiving motor 32 is arranged outside the supporting column, and transmission is achieved through the gear set which is used for connecting the rotating shaft of the material receiving roller 31 and the rotating shaft of the material receiving motor 32.

In the embodiment, the feeding motor 22 and the receiving motor 32 are preferably stepping motors, and the rotating speeds of the feeding motor 22 and the receiving motor 32 are related to the radiuses of the feeding roller 21 and the receiving roller 31, and the linear speeds of the feeding roller 21 and the receiving roller 31 are consistent. The radius is the linear distance between the fabric and the rotation center of the motor. The control module controls the feeding motor 22 and the receiving motor 32 to synchronously rotate, so that the fabric is conveyed from the feeding roller 21 to the receiving roller 31.

In this embodiment, the tensioning mechanism 40 is disposed between the feeding mechanism 20 and the receiving mechanism 30, and is used for tensioning the fabric, and specifically includes a mounting frame 41, a tensioning roller 42 and an air spring 43. The mounting frame 41 is arranged between the feeding roller 21 and the receiving roller 31; the tensioning roller 42 is hinged on the mounting frame 41; an air spring 43 is used for connecting the mounting frame 41 and the frame; the distance between the tension roller 42 and the bottom frame 11 is respectively larger than the distance between the feeding roller 21 and the bottom frame 11, and the distance between the receiving roller 31 and the bottom frame 11. Therefore, under the elastic support of the air spring 43, the fabric is jacked upwards in the middle area between the feeding roller 21 and the receiving roller 31, and when the rotating speed parts of the feeding motor 22 and the receiving motor 32 are matched, the tensioning mechanism 40 can play a certain buffering role, so that the fabric is prevented from being torn due to excessive tensioning force.

In this embodiment, the first light source 71 is disposed on the top frame 12, and the irradiation direction thereof is toward the lower fabric, where the first light source 71 is preferably an LED array light source; the first laser 72 is arranged on the top frame 12 and used for forming a first projection area 72a on the fabric; the first camera 73 is arranged on the top frame 12, the shooting direction of the first camera faces the fabric, the first camera is used for acquiring image information of one surface of the fabric, and the first projection area is located in the shooting range of the first camera 73; and the control module is electrically connected with the feeding mechanism 20, the receiving mechanism 30, the first light source 71, the second laser 82 and the first camera 73.

According to the invention, one side or two sides of the fabric are provided with the high-speed camera and the laser, the passing fabric is photographed by the high-speed camera to obtain corresponding image information, the laser forms a laser projection area on the fabric, and the laser in the projection area is a laser light band or a laser grid consisting of linear lasers. When the surface of the fabric has a flaw with a certain diameter, the projection of the laser at the position is in a disconnected or missing state, so that the control module can be assisted to judge whether the flaw type of the flaw area is a hole or stain. The identification of the control module is achieved through machine vision, and compared with manual detection, the efficiency is higher.

In one embodiment, referring to fig. 1 to 7, the fabric inspecting apparatus further includes a first cleaning mechanism 50 including a first housing 51, a first cleaning roller 52, a first brush 53, and a first dust collector 54. In this embodiment, the first housing 51 is disposed on the top frame 12 and located at one side of the mounting frame 41, and the lower end thereof is open. The side wall is provided with an exhaust hole. The first cleaning roller 52 is hinged in the first housing 51, and the lower part of the first cleaning roller extends out of the opening at the lower part of the first housing 51 and contacts with one surface of the fabric. The first brush 53 is disposed in the first housing 51 and contacts with the outer wall of the arc surface of the first cleaning roller 52, so that the first cleaning roller 52 generates static electricity. The fabric drives the first cleaning roller 52 to rotate in the conveying process, the first cleaning roller 52 is made of plastic, and the first brush 53 rubs against the first cleaning roller 52 to generate static electricity. The dust and impurities on the surface of the fabric can be adsorbed. And the first brush 53 can sweep down the adsorbed dust and foreign substances. When the first dust collector 54 sucks air, foreign substances and dust inside the first housing 51 may be collected. The first brush 53 can also be directly arranged on the fabric, but for some special fabrics, the brush may cause certain abrasion to the surface of the fabric, so that an electrostatic adsorption mode is adopted.

In one embodiment, referring to fig. 1-7, the fabric sensing apparatus further comprises a second cleaning mechanism 60, the second cleaning mechanism 60 comprising: a second housing disposed opposite to the first housing 51; the second cleaning roller is hinged in the second shell and is in contact with one surface of the fabric, which is far away from the first cleaning roller 52; the second brush is arranged in the second shell and is in contact with the outer wall of the cambered surface of the second cleaning roller, so that the second cleaning roller generates static electricity; and the air suction end of the second dust collector is communicated with the interior of the second shell. In the present embodiment, the second cleaning mechanism 60 is disposed on the opposite side of the first cleaning mechanism 50, and both have the same structure, and the electrostatic dust removal is mainly performed on the other side of the fabric, which is described later.

In an embodiment, referring to fig. 1 to 7, the fabric detecting apparatus further includes: a second light source 81 disposed opposite to the first light source 71; a second laser 82, configured to form a second projection area 82a on a side of the fabric away from the first laser 72; the second camera 83 is arranged at the opposite side of the first camera 73 and used for acquiring the image information of the other surface of the fabric, and the second projection area 82a is positioned in the shooting range of the second camera 83; the first laser 72 is arranged close to the feeding roller 21, and the second laser 82 is arranged close to the receiving roller 31. In this embodiment, a second light source 81, a second laser 82 and a second camera 83 are provided on the chassis 11, opposite to the first light source 71, the second laser 82 and the first camera 73 described above, for machine vision inspection of the other surface of the fabric. The second light source 81, the second laser 82 and the second camera 83 are also electrically connected to the control module.

In one embodiment, referring to fig. 1-7, the web detection apparatus further includes a roller encoder 84 electrically connected to the control module. In this embodiment, the roller code 84 is disposed near the material receiving roller 31, the roller thereof abuts against the material receiving roller 31, and the spring 85 is disposed between the roller and the support rod, so that the roller and the fabric on the material receiving roller 31 are kept in contact, and the measurement error is reduced. The specific location of the defect area on the web is known from the measurement data from the roller encoder 84.

In an embodiment, referring to fig. 1 to 7, the control module is configured to compare the image information acquired by the first camera 73 and the second camera 83 with a fabric image with quality defects in a database to determine a defect type of a surface quality defect area of the fabric.

In one embodiment, referring to fig. 1 to 7, the fabric detecting apparatus further includes a labeling mechanism 90 disposed at one side of the material receiving roller, and the labeling mechanism 90 includes: a roller assembly, a separation plate 94, a marking roller 95 and a drive cylinder 96. The roller assembly comprises a first roller 92 and a second roller 93 for mounting the label paper belt and a stepping motor for driving the first roller 92 and the second roller 93 to rotate; a separating plate 94 on which the label web is disposed at one end and which is carried along one side of the separating plate towards one edge thereof and around which it is carried along the other, opposite side to the second roller 93, at which edge the label paper is separated from the label web; a marking roller 95 is provided at one side of the separation plate; the driving cylinder 96 drives the marking roller wheel 95 to move towards the material receiving roller, so that the separated label is attached to the fabric. In this embodiment, the label paper tape includes label paper and plain paper tape, and because the rigidity of label paper is different with plain paper tape, because the separator 94 is thinner, when plain paper tape passes through the edge of separator 94, can wind from one side to the other side, and the thickness of label paper is thicker, and rigidity is stronger and can not wind to the other side along with plain paper tape, but continues to move forward to realize the separation with the plain paper. After one end of the label paper is separated from the plain paper tape, the driving cylinder 96 drives the pressing roller to move so that the label paper is attached to the fabric. One end of the label paper, which is firstly attached to the fabric, is an extending end, one of the adjacent side edges is attached to the fabric, and the other side is located outside the fabric, so that the subsequent manual inspection is facilitated.

In an actual operation process, when the first camera 73 and/or the second camera 83 detects that the fabric has a defect, the control module controls the receiving roller 31 to rotate for a certain time according to the distance between the detection station and the labeling station, the radius formed by the distance between the center of the receiving roller 31 and the periphery of the fabric and the rotating speed of the receiving motor 32, so that the edge of the fabric corresponding to the defect area of the fabric corresponds to the separating plate 94, and the corresponding roller assembly drives the label paper tape to separate the labels. And then the two are linked to paste the label at the edge of the fabric corresponding to the flaw.

In an embodiment, referring to fig. 1 to 7, the fabric detection device further includes a laser marker disposed below the separation plate 94, and the laser marker is electrically connected to the control module and used for marking the label paper. In this embodiment, the laser marking machine is electrically connected to the control module, and when the control module analyzes the defect type, the control module sorts the defects, and prints the serial number information, the defect type information, and the a/B side information where the defect is located on one end of the label paper far away from the fabric through the laser marking machine. After the detection is finished, the fabric is rolled together, and an operator can confirm the specific position and type of the flaw according to the information of the part of the label paper extending out, so that the subsequent reworking or cleaning can be facilitated. In addition, the A/B surfaces are the front surface and the back surface of the fabric. The information can also be printed on the label paper in a bar code or two-dimensional code mode, and one side of the label paper is convenient for subsequent machine review.

In one embodiment, referring to fig. 1 to 7, the width of the separating plate 94 is greater than the width of the label web, and the edge thereof is provided with a photo sensor opposite to the take-up roller 31 for detecting the distance between the separating plate 94 and the web. The marking mechanism comprises a mounting plate 91, the roller assembly, a separating plate 94, a marking roller 95 and a driving cylinder 96 are arranged on the upper surface of the mounting plate 91, the standard reaching mechanism further comprises an electric cylinder arranged on the lower surface of the mounting plate 91, the electric cylinder is arranged on the underframe 11, when the photoelectric sensor detects that the distance between the fabric on the material receiving roller 31 and the separating plate 94 is smaller than a set range, the electric cylinder drives the marking mechanism to move a certain distance downwards to enable the separating plate 94 and the fabric on the material receiving roller 31 to keep a certain distance, and direct contact between the separating plate 94 and the material receiving roller 31 is avoided.

The invention also provides a fabric detection method, which comprises the following steps: the feeding mechanism and the receiving mechanism are driven to synchronously rotate, so that the fabric is conveyed from the feeding mechanism to the receiving mechanism; projecting linear laser on one or two surfaces of the fabric; in the step, grid-shaped linear laser can be projected, and when the surface of the fabric has bulges and depressions. The grid may be distorted to some extent for inspection. When a hole is encountered, the grid appears to be missing in the area. The size of the specific grid is 1-2 mm.

Acquiring image information of a linear laser area projected on the surface of the fabric; and (4) taking a picture of the surface of the fabric through a high-speed camera. The forward light has the shooting frequency and the transmission speed, and the higher the transmission speed is, the higher the frequency is. The two acquired front and back pictures must have certain area overlapping, so that the area of missing detection is avoided. And judging whether a flaw area exists on the surface of the fabric according to the image information, and judging the flaw type in the flaw area.

The method also comprises the following steps of before the step of projecting linear laser on one side or two sides of the fabric: the cleaning roller synchronously rotates along with the transmission of the fabric to absorb impurities on the surface of the fabric; the cleaner is started to extract the impurities swept down by the cleaning roller. The dust collector is started to absorb impurities adhered to the surface of the fabric, so that the interference of the impurities to the comparison process can be reduced.

The invention has the beneficial effects that: according to the invention, the high-speed cameras are arranged on one side or two sides of the fabric, the passing fabric is photographed by the high-speed cameras to obtain corresponding image information, and meanwhile, when holes with a certain diameter exist on the surface of the fabric, the linear laser is in a disconnected state on the surface of the fabric, so that the control module can be assisted to judge whether the defect type of the defect area is a hole or a stain. Compared with manual detection, the efficiency is higher.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A fabric detection device is characterized by comprising:

a frame;

the first light source is arranged towards one surface of the fabric;

2. The fabric detecting apparatus of claim 1, wherein the feeding mechanism comprises:

the feeding roller is hinged with the rack;

receiving agencies includes:

3. The web detecting apparatus of claim 2, wherein the tensioning mechanism comprises:

the tensioning roller is hinged on the mounting frame;

the air spring is used for connecting the mounting frame and the rack;

4. The web detecting apparatus of claim 3, further comprising a first cleaning mechanism, the first cleaning mechanism comprising:

a first dust collector communicated with the inside of the first housing.

5. The web detecting apparatus of claim 4, further comprising a second cleaning mechanism, the second cleaning mechanism comprising:

a second housing disposed opposite to the first housing;

6. The fabric detecting apparatus of claim 2, further comprising:

a second light source disposed opposite to the first light source;

7. The web detecting apparatus of claim 2, further comprising a roller code electrically connected to the control module.

8. The fabric inspection apparatus of claim 6 wherein the control module is configured to compare the image information obtained by the first and second cameras with a fabric image of a quality defect in a database to determine a defect type of a quality defect area on the surface of the fabric.

9. The fabric detecting apparatus of claim 2, further comprising a labeling mechanism disposed on one side of the take-up roll, the labeling mechanism comprising:

the label pressing roller is arranged on one side of the separating plate;

10. The fabric detection apparatus of claim 9, further comprising a laser marker disposed below the separator plate, the laser marker being electrically connected to the control module for marking the label paper.