CN109385741B - Production quality control method of artificial fur fabric - Google Patents
Production quality control method of artificial fur fabric Download PDFInfo
- Publication number
- CN109385741B CN109385741B CN201811136819.5A CN201811136819A CN109385741B CN 109385741 B CN109385741 B CN 109385741B CN 201811136819 A CN201811136819 A CN 201811136819A CN 109385741 B CN109385741 B CN 109385741B
- Authority
- CN
- China
- Prior art keywords
- fiber
- feeding matrix
- feeding
- matrix
- error
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/02—Pile fabrics or articles having similar surface features
- D04B1/025—Pile fabrics or articles having similar surface features incorporating loose fibres, e.g. high-pile fabrics or artificial fur
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Preliminary Treatment Of Fibers (AREA)
Abstract
The invention provides a method for controlling the production quality of an artificial fur fabric, which comprises the following steps: establishing a fiber transfer model of a carding head in an artificial fur machine; analyzing the input pattern Italian drawing to obtain a first feeding matrix, and converting the first feeding matrix to obtain an input original fiber quantity sequence; expanding the first wool feeding matrix to obtain a second wool feeding matrix; obtaining an output fiber quantity sequence according to the input fiber quantity sequence and a fiber transfer model; obtaining a third feeding matrix according to the output fiber quantity sequence and the first feeding matrix; comparing the second feeding matrix with the third feeding matrix to obtain an error; judging whether the error is smaller than a preset threshold value or not, and outputting a second wool feeding matrix if the error is smaller than the preset threshold value; otherwise, compensating the second feeding matrix according to the error; the method solves the problems of uneven fur feeding and the like in the production process of the existing artificial fur fabric, and effectively improves the weaving quality.
Description
Technical Field
The invention relates to the technical field of textile machinery control, in particular to a method for controlling the production quality of an artificial fur fabric.
Background
The artificial fur fabric is used as a natural fur substitute and is widely applied to clothing fabrics, toys, blankets and the like. The wool top feeding type artificial fur fabric, especially jacquard fabric, has the problems of wool shortage, wool spots, inaccurate jacquard and the like in the production, and aiming at the production quality control problems, the existing solution method mainly depends on a plate-making operator to modify the feeding action of a carding head according to personal experience, although the solution method can improve the quality of the fabric, the method not only needs to carry out repeated proofing adjustment, but also is not beneficial to technical popularization. The fundamental cause of these production quality problems is the incomplete transfer of the fibres between the rollers and between the needles, the delay and the circulation of the carding transfer of the fibres in the carding head, which results in an inaccurate fibre mass on the carding head. Therefore, how to design a quality control method for quantitative production of artificial fur fabric is a major problem facing the present.
Disclosure of Invention
The invention aims to provide a production quality control method of an artificial fur fabric, which solves the problems of uneven fur eating and the like in the production process of the conventional artificial fur fabric, realizes the production quality control method in the production process of the artificial fur fabric and effectively improves the weaving quality of the artificial fur fabric.
In order to achieve the aim, the invention provides a production quality control method of an artificial fur fabric, which comprises the following steps:
s1, establishing a fiber transfer model of a carding head in the artificial fur machine;
s2, analyzing the input pattern Italian drawing to obtain a first feeding matrix, and converting the first feeding matrix to obtain an input original fiber quantity sequence;
s3, expanding the first wool feeding matrix to obtain a second wool feeding matrix;
s4, obtaining an output fiber quantity sequence according to the input fiber quantity sequence and the fiber transfer model;
s5, obtaining a third feeding matrix according to the output fiber quantity sequence and the first feeding matrix;
s6, comparing the second wool feeding matrix with the third wool feeding matrix to obtain an error;
s7, judging whether the error is smaller than a preset threshold value, and if so, outputting a second wool feeding matrix; otherwise, compensating the second feeding matrix according to the error, recalculating according to the compensated second feeding matrix and the fiber transfer model to obtain an output fiber quantity sequence, and then sequentially and repeatedly executing the steps S5 and S6 until the error is smaller than a preset threshold value.
Preferably, the fiber transfer model is:
mout(t)＝mwA(t-Tw1)k0X(t)
wherein m isout(t) represents the mass of the fibers taken by the needles, mwA(t-Tw1) Indicates the elapsed time delay Tw1After that, and after passing the point of separation between the working roll and the carding roll, the mass of fibres remaining on the working roll, Tw1Indicating work roll run thetaw1Time required for angle, k0Showing the transfer rate of the fibres from the working rolls by the needles and x (t) the input sequence of the amount of fibrils.
Preferably, in step S2, the first feeding matrix is converted to obtain an input fibril quantity sequence, and specifically, the first feeding matrix is read line by line and converted to the input fibril quantity sequence by taking one needle knitted by a needle cylinder as a time unit.
Preferably, in step S3, if the first feeding matrix is represented by CmAccording to the standard quantity of fiber quality, 1 pair of CmExpanding, and expressing the second feeding matrix obtained after the expansion as (C)m,1)。
Preferably, in step S6, the third feeding matrix and the second feeding matrix are subtracted to obtain an error.
Preferably, in step S7, when the error is greater than or equal to the preset threshold, the second feeding matrix and the error are added, and the result after the addition is used as the input fibril quantity sequence in the fiber transfer model, and the output fiber quantity sequence is recalculated.
Preferably, the input fibril quantity sequence is a binary sequence consisting of 0 and 1, where 0 represents no hooking fiber and 1 represents hooking fiber.
Compared with the prior art, the invention has the following advantages and prominent effects:
the method for controlling the production quality of the artificial fur fabric establishes a fiber transfer model by analyzing the transfer principle of fibers in the carding head, can quantitatively analyze the change condition of the fiber quantity according to the model, and provides a fiber quantity error compensation method for controlling the feeding fiber quantity of the carding head in real time.
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 drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for controlling the production quality of an artificial fur fabric according to an embodiment of the present invention;
FIG. 2 is a schematic view of the working principle of the carding head in the production process of the artificial fur fabric disclosed by the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in FIG. 1, the embodiment of the invention discloses a production quality control method of an artificial fur fabric, which comprises the following steps:
s101, establishing a fiber transfer model of a carding head in the artificial fur machine. Specifically, since the transfer of the fiber between the two rolls is incomplete, the fiber that is not transferred enters the next transfer process together with the newly fed fiber. The motion of the fiber in the whole carding head has a cyclic transfer process, and when the fiber is hooked by a knitting needle, the fiber quantity in a working area on a working roller of the carding head directly influences the production quality of the artificial fur fabric. The fiber transfer among all rollers and between knitting needles is incomplete, the fiber amount on the carding head is not accurate due to factors such as lag and circulation of the fiber in carding transmission in the carding head, and the fiber amount change condition is quantitatively analyzed by establishing a fiber transfer model, so that the fed fiber amount is controlled in real time.
As shown in FIG. 2, the embodiment of the present invention discloses the working principle of the carding head in the production process of the artificial fur fabric, i and j represent a pair of input rollers, b is a carding roller, w is a working roller, c is a cleaning roller, the area between the two rollers where the fiber transfer is performed is a working area, and when the fiber leaves the working area through a separation point, the transfer process is completed. Point a represents the separation point between the card roller and the work roller, point B represents the separation point between the work roller and the cleaning roller, point C represents the separation point between the cleaning roller and the card roller, point D represents the separation point between the input roller i and the card roller, point E represents the needle picking point, and point F represents the separation point between the two input rollers.
For the input rollers i and j, the fiber at the point F comes from the fed fiber and the fiber from the point D, the fiber amount at the point D is the residual fiber amount after the fiber on the input roller is transferred to the carding roller, and the mass change relationship of the fiber on the input roller in the transferring process can be obtained as shown in the formula (1) and the formula (2):
miF(t)＝mi(t)+miD(t-Ti1) (1)
miD(t)＝(1-kib)mi(t-Ti2) (2)
for carding roller b, the transfer of D point fiber from the input roller and the operation of A point fiber, the transfer of C point fiber from the cleaning roller and the operation of D point fiber, and the A point fiber from the residual fiber amount after the transfer to the working roller, so that the mass change relationship of the fiber on the carding roller in the transfer process can be obtained as shown in the formula (3) -the formula (5):
mbD(t)＝miD(t)kib+mbA(t-Tb3) (3)
mbC(t)＝mbD(t-Tb1)+mcB(t-Tc1)kcb(4)
mbA(t)＝(1-kbw)mbC(t-Tb2) (5)
for the working roll w, the fiber at the point A is transferred from the carding roll and runs at the point B, the fiber at the point E is from the residual quantity after the fiber is taken by the knitting needle, and the fiber at the point B is from the residual quantity after the fiber is transferred to the cleaning roll, so that the mass change relation of the fiber on the working roll in the transfer process is obtained as shown in the formula (6) -the formula (8):
mwA(t)＝mbC(t-Tb2)kbw+mwB(t-Tw3) (6)
mwE(t)＝mwA(t-Tw1)(1-koX(t)) (7)
mwB(t)＝mwE(t-Tw2)(1-kwc) (8)
for the cleaning roller C, the fiber amount at the point B is from the operation of the working roller transfer and the point C, and the fiber at the point C is from the residual amount after the transfer to the carding roller, so that the mass change relationship of the fiber on the cleaning roller in the transfer process can be obtained as shown in the formula (9) and the formula (10):
mcB(t)＝mwE(t-Tw2)kwc+mcC(t-Tc2) (9)
mcC(t)＝mcB(t-Tc1)(1-kcb) (10)
in formula (1) to formula (10), kbw、kwc、kcb、kibIndicating the transfer factor between the two rolls under the corresponding corner mark, i.e. the proportion of the fibre transferred from one roll to the other. In specific implementation, the transfer factor can be obtained by empirical estimation or experimental measurement, and mi(t) represents the mass of fibre fed to the carding head per unit of time, miF(t)、miD(t)、mbD(t)、mbC(t)、mbA(t)、mwA(t)、mwE(t)、mwB(t)、mcB(t) and mcC(t) each represents a corresponding angleThe amount of fiber after each roll passes the corresponding separation point is targeted. T isi1Representing the time taken for the fibre to travel from point D to point F, Ti2Representing the time taken for the fibre to travel from point F to point D, Tb1、Tb2、Tb3、Tw1、Tw2、Tw3、Tc1And Tc2Respectively representing angles theta corresponding to fiber runningb1、θb2、θb3、θw1、θw2、θw3、θc1And thetac2Time taken, k0Showing the transfer rate of the fibres from the working rolls by the needles and x (t) the input sequence of the amount of fibrils.
The quantity of fibers taken by the knitting needle at the point of separation E is shown by the formula (11):
mout(t)＝mwA(t-Tw1)k0X(t) (11)
wherein m isout(t) represents the mass of the fibers taken by the needles, mwA(t-Tw1) Indicates the elapsed time delay Tw1After that, and after passing the point of separation between the work roll and the carding roll, the amount of fibre remaining on the work roll, Tw1Indicating work roll run thetaw1The time required for the angle.
S102, after inputting a pattern design drawing, analyzing the pattern design drawing, generating a corresponding first wool feeding matrix after the analysis is finished, reading the first wool feeding matrix line by line, taking one needle knitted by a needle cylinder as a time unit, and converting the first wool feeding matrix into an input original fiber quantity sequence X (t). X (t) is a binary sequence, 0 indicates no fibers are caught and 1 indicates fibers are caught.
S103, expanding the first wool feeding matrix to obtain a second wool feeding matrix. I.e. if the first feeding matrix is denoted CmAccording to the standard quantity of fiber quality, 1 pair of CmExpanding, the second feeding matrix after expansion is expressed as (C)m,1)。
And S104, solving according to the input fibril quantity sequence X (t) obtained in the step S102 and the fiber transfer model established in the step S101 to obtain an output fiber quantity sequence. M in formula (11)wA(t-Tw1) K is calculated from formula (1) to formula (10)0By prior art means, x (t) is known data, so that the output fiber quantity sequence can be calculated.
And S105, expanding the first wool feeding matrix according to the output fiber quantity sequence obtained in the step S104 to obtain a third wool feeding matrix. If the normalized output fiber mass sequence is denoted as M, then the expanded third feeding matrix is (C)m,M)。
S106, feeding the second extended wool matrix (C)m1) and the expanded third feeding matrix (C)mM) are compared to obtain an error, i.e. a third feeding matrix (C)mM) and a second feeding matrix (C)mAnd 1) subtracting, wherein the second element in the matrix obtained after subtraction is the error.
And S107, judging whether the error obtained in the step S106 is smaller than a preset threshold value, if so, outputting a second wool feeding matrix, and weaving the fabric by the artificial fur machine according to the second wool feeding matrix. And if the error is larger than or equal to the preset threshold value, compensating the second feeding matrix according to the error, namely adding the error and the second feeding matrix, taking the second feeding matrix obtained after the addition as an input original fiber quantity sequence X (t) in the fiber transfer model, calculating the fiber transfer model again to obtain a new output fiber quantity sequence, then repeatedly executing the steps S105 and S106 until the calculated error is smaller than the preset threshold value, and then outputting the final second feeding matrix. In specific implementation, the preset threshold may be set according to actual needs, and in this embodiment, the preset threshold is set to 0.05.
The method for controlling the production quality of the artificial fur fabric disclosed by the embodiment of the invention establishes a fiber transfer model by analyzing the change relation of the fiber quality in the transfer process from the top feeding of the wool to the knitting needle hooking of the knitted fabric, realizes the effective prediction of the fiber taking amount of the knitting needle hooking, compensates the fabric in time under the condition of inaccurate fiber amount on the carding head, and controls the fiber feeding amount on the carding head in real time, thereby achieving the purpose of improving the knitting quality of the artificial fur fabric.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A production quality control method of artificial fur fabric is characterized by comprising the following steps:
s1, establishing a fiber transfer model of a carding head in the artificial fur machine;
s2, analyzing the input pattern Italian drawing to obtain a first feeding matrix, and converting the first feeding matrix to obtain an input original fiber quantity sequence;
s3, expanding the first wool feeding matrix to obtain a second wool feeding matrix;
s4, obtaining an output fiber quantity sequence according to the input fiber quantity sequence and the fiber transfer model;
s5, obtaining a third feeding matrix according to the output fiber quantity sequence and the first feeding matrix;
s6, comparing the second wool feeding matrix with the third wool feeding matrix to obtain an error;
s7, judging whether the error is smaller than a preset threshold value, and if so, outputting a second wool feeding matrix; otherwise, compensating the second feeding matrix according to the error, recalculating according to the compensated second feeding matrix and the fiber transfer model to obtain an output fiber quantity sequence, and then sequentially and repeatedly executing the steps S5 and S6 until the error is smaller than a preset threshold value.
2. The method for controlling the production quality of an artificial fur fabric according to claim 1, wherein said fiber transfer model is:
mout(t)＝mwA(t-Tw1)k0X(t)
wherein m isout(t) represents the mass of the fibers taken by the needles, mwA(t-Tw1) Indicates the elapsed time delay Tw1After that, and after passing the point of separation between the working roll and the carding roll, the mass of fibres remaining on the working roll, Tw1Indicating work roll run thetaw1Time required for angle, k0Showing the transfer rate of the fibres from the working rolls by the needles and x (t) the input sequence of the amount of fibrils.
3. The method for controlling the production quality of an artificial fur fabric according to claim 1, wherein said converting of said first feeding matrix in step S2 is performed to obtain an input fibril quantity sequence, and specifically, said first feeding matrix is read line by line and converted into an input fibril quantity sequence by knitting a needle on a cylinder as a time unit.
4. The method for controlling the production quality of an artificial fur fabric, according to claim 1, wherein in step S3, if said first feeding matrix is represented by CmAccording to the standard quantity of fiber quality, 1 pair of CmExpanding, and expressing the second feeding matrix obtained after the expansion as (C)m,1)。
5. The method for controlling the production quality of an artificial fur fabric according to claim 1, wherein in step S6, the error is obtained by subtracting the third feeding matrix and the second feeding matrix.
6. The method for controlling the production quality of an artificial fur fabric according to claim 1, wherein in step S7, when the error is greater than or equal to the preset threshold value, the second feeding matrix and the error are added, and the result after the addition is used as the input fibril quantity sequence in the fiber transfer model to recalculate the output fiber quantity sequence.
7. The production quality control method of an artificial fur fabric according to claim 1, wherein said input fibril quantity sequence is a binary sequence consisting of 0 and 1, wherein 0 represents no hooking fiber and 1 represents hooking fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811136819.5A CN109385741B (en) | 2018-09-26 | 2018-09-26 | Production quality control method of artificial fur fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811136819.5A CN109385741B (en) | 2018-09-26 | 2018-09-26 | Production quality control method of artificial fur fabric |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109385741A CN109385741A (en) | 2019-02-26 |
| CN109385741B true CN109385741B (en) | 2020-02-14 |
Family
ID=65418114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811136819.5A Active CN109385741B (en) | 2018-09-26 | 2018-09-26 | Production quality control method of artificial fur fabric |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109385741B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1443404A (en) * | 1973-11-02 | 1976-07-21 | Elitex Zavody Textilniho | Method of reading matrices in knitting machines and device for perfoming said method |
| CN101709530A (en) * | 2009-10-29 | 2010-05-19 | 周益民 | Wool top feeding type weaving method of two-color hollowed-out jacquard pattern of knitting artificial fur |
| CN101794122A (en) * | 2010-03-11 | 2010-08-04 | 江南大学 | CPLD controller special for jacquard fur weaving |
| CN101799670A (en) * | 2010-03-11 | 2010-08-11 | 江南大学 | Special FPGA controller for weaving jacquard fur |
| CN104820402A (en) * | 2015-03-31 | 2015-08-05 | 浙江理工大学 | Artificial fur machine jacquard control system and control method |
| CN105207551A (en) * | 2015-08-19 | 2015-12-30 | 浙江理工大学 | Fur abutting machine combing head control system and control method |
-
2018
- 2018-09-26 CN CN201811136819.5A patent/CN109385741B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1443404A (en) * | 1973-11-02 | 1976-07-21 | Elitex Zavody Textilniho | Method of reading matrices in knitting machines and device for perfoming said method |
| CN101709530A (en) * | 2009-10-29 | 2010-05-19 | 周益民 | Wool top feeding type weaving method of two-color hollowed-out jacquard pattern of knitting artificial fur |
| CN101794122A (en) * | 2010-03-11 | 2010-08-04 | 江南大学 | CPLD controller special for jacquard fur weaving |
| CN101799670A (en) * | 2010-03-11 | 2010-08-11 | 江南大学 | Special FPGA controller for weaving jacquard fur |
| CN104820402A (en) * | 2015-03-31 | 2015-08-05 | 浙江理工大学 | Artificial fur machine jacquard control system and control method |
| CN105207551A (en) * | 2015-08-19 | 2015-12-30 | 浙江理工大学 | Fur abutting machine combing head control system and control method |
Non-Patent Citations (3)
| Title |
|---|
| 人造毛皮机微电脑控制器的设计与实现;万光逵等;《南昌航空工业学院学报》;19970630(第2期);第30-37页 * |
| 基于矩阵算法的——纬编单面提花的三维仿真;朱锦绣等;《天津纺织科技》;20160215(第213期);第4-6页 * |
| 新型人造毛皮提花编织机自动控制系统;齐晓辉等;《针织工业》;20061128(第11期);第8-12页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109385741A (en) | 2019-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109385741B (en) | Production quality control method of artificial fur fabric | |
| CN108754863A (en) | A kind of preparation process of highly hygroscopic spun lacing non-woven material | |
| CN106987931A (en) | A kind of inexpensive kraft fibers leather production line | |
| CN103938307B (en) | A kind of half spinning carding process and equipment thereof | |
| CN107532343B (en) | Card clothing for carding machine and card machine | |
| EP1960573B1 (en) | Process for the production of cashmere yarns | |
| CN204715073U (en) | A kind of wet tissue pre-processing devices | |
| Hu | Prediction model of rotor yarn quality based on CNN-LSTM | |
| DE102016225823A1 (en) | Method for determining treatment parameters via an information carrier | |
| JP7285704B2 (en) | KNITTING MACHINE DRIVING DATA PROCESSING METHOD AND PROCESSING SYSTEM USING MACHINE LEARNING | |
| CN102926036A (en) | Carding unit for carding machines | |
| CN109235080A (en) | A kind of method that blended weft-knitted fabric of polyester-cotton blend contaminates numb grey | |
| CN208183143U (en) | A kind of combing cover plate, carding machine | |
| CN203683792U (en) | Apron self-twisting device and spinning machine comprising same | |
| Abd-Ellatif | Optimizing sliver quality using artificial neural networks in ring spinning | |
| CN105700498A (en) | Quantitative design method for heat setting technological parameters of knitted fabric | |
| CN204589419U (en) | A kind of modern comber | |
| CN110714270A (en) | Carbon fiber felt and binary method felt preparation process thereof | |
| CN104699917B (en) | A kind of evaluation method of combing integral cylinder carding effect | |
| CN205062272U (en) | Apron and roller convolution divide comb | |
| CN203668574U (en) | Carding machine | |
| CN107447416A (en) | A kind of modified technique of the anti-PYTHON of fabric fluffing | |
| DE101090C (en) | ||
| CN110930047B (en) | Automatic slashing process generation method and device, computer equipment and storage medium | |
| CN207919046U (en) | Spin cotton flat-clothing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |