CN104975388B - A kind of weak ring detection of yarn strength and the method and its device removed - Google Patents
A kind of weak ring detection of yarn strength and the method and its device removed Download PDFInfo
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- CN104975388B CN104975388B CN201510398471.7A CN201510398471A CN104975388B CN 104975388 B CN104975388 B CN 104975388B CN 201510398471 A CN201510398471 A CN 201510398471A CN 104975388 B CN104975388 B CN 104975388B
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Abstract
The invention discloses a kind of weak ring detection of yarn strength and the method and its device removed, the present apparatus is made up of capacitance type sensor and photoelectric sensor and some each processing units.Yarn send dependent processing unit to be handled by capacitance sensor and photoelectric sensor, and by the irregular signal of thickness of yarn and the irregular signal of diameter simultaneously.Yarn send processing unit to be handled by exporting the irregular signal of thickness of yarn after capacitance sensor, and output yarn linear density is irregular to calculate cross-section yams radical Tn.When certain section of yarn, into Tn, less than certain value, ρ values are less than threshold value simultaneously, and this section of yarn has the weak ring of strength.The present invention proposes a kind of method and apparatus of the weak ring of on-line checking yarn, while can remove on request.The broken end parking caused by the weak ring of yarn strength is reduced, production efficiency and benefit is improved.
Description
【Technical field】
The present invention relates to the winding procedure of spinning industry yarn production and yarn product quality testing, more particularly to a kind of yarn
The weak ring detection of line strength and the method and its device removed.
【Background technology】
Yarn in process of production, due to the influence of defective workmanship, equipment fault and environmental factor, part yarn strength
Reduce, tensile resistance reduction.Later process (warping, sizing and weaving) will result in broken end using the yarn, have a strong impact on
Production efficiency and benefit.At present, the weak ring of yarn strength is measured without effective method.In yarn laboratory, single thread force is used
Instrument measures the average ultimate strength of yarn.Average ultimate strength can not reflect the weak ring of yarn strength., can because test sample is few
The probability for detecting the weak ring of yarn is very low.Influence of the weak ring of yarn strength to production of weaving cotton cloth is very big.
【The content of the invention】
The problem of existing for prior art, the present invention proposes a kind of method and apparatus of the weak ring of on-line checking yarn,
It can remove on request simultaneously.The broken end parking caused by the weak ring of yarn strength is reduced, production efficiency and benefit is improved.
A kind of weak ring detection of yarn strength and the method removed, comprise the following steps：
The irregular signal of thickness of yarn is obtained in real time, is calculated and is obtained yarn linear density M；
The irregular signal of diameter is obtained in real time, obtains the irregular signal D of diameter；
Yarn cross section number of fiber is calculated according to the linear relationship between yarn cross section number of fiber Tn and yarn linear density M
Tn, according to formulaCalculating obtains thread density ρ values.
Judge whether thread density ρ values are less than ρ value threshold values, and judge whether yarn cross section number of fiber Tn is less than Tn
Limit value；If the Tn and ρ of yarn are below corresponding threshold value, there is the weak ring of strength in this section of yarn；It is purged process.
Described ρ values threshold value is (0~40%)WhereinFor the real-time average value of ρ values.
Described also includes drafting curve step：
Real-time yarn linear density M curves are drawn,
The irregular signal D curves of diameter are drawn,
Thread density ρ curve and ρ value threshold curves is drawn,
Draw yarn cross section number of fiber Tn and Tn threshold curves.
A kind of weak ring detection of yarn strength and the device removed, including
Capacitance type sensor, for obtaining thickness of yarn irregular signal M of the yarn by capacitance type sensor test trough,
Photoelectric sensor, for obtaining diameter irregular signal D of the yarn by photoelectric sensor test trough；
CPU, including,
First processing units, yarn is calculated according to the linear relationship between yarn cross section number of fiber Tn and yarn linear density M
Line fiber radical Tn；
Second processing unit, according to formulaCalculate thread density ρ values；
Judging unit, judges whether density p value is less than p value threshold value, and judges whether Tn is less than Tn threshold values；If yarn
Tn and ρ be below corresponding threshold value, then there is the weak ring of strength in this section of yarn, carry out alarm；
Wherein, capacitance type sensor and photoelectric sensor are connected with CPU, and first processing units and second processing unit are equal
It is connected with judging unit.
As a further improvement on the present invention, in addition to CPU the display unit being connected, for showing and drawing curve,
Drawing curve includes drawing real-time yarn linear density M curves, draws the irregular signal D curves of diameter, draws thread density ρ curve
With ρ value threshold curves, yarn cross section number of fiber Tn and Tn threshold curves are drawn；
As a further improvement on the present invention, memory cell is also included in CPU, for data storage test data and song
Line.
As a further improvement on the present invention, described capacitance type sensor and photoelectric sensor are disposed adjacent, and are arranged on
Detection, which produces yarn or is arranged in subsequent detection process, on the production line of yarn is used for yarn qualities detection.
Compared with prior art, the present invention has advantages below：
The method of the present invention is obtained by the irregular numerical value of the diameter for calculating line density value and its yarn, then by two data combinations
The density p of yarn is obtained, while calculating the number of fiber Tn of the sectional area of this section of yarn；By the way that the number of fiber Tn of sectional area is tied
Yarns density p judges the weak ring of yarn strength, single compared with prior art to judge more accurate and objective, more has finger to actual production
Lead effect.Because the number of fiber Tn of sectional area has reacted the fiber situation of yarn interior in quantity, sectional area in theory
Number of fiber occurs the weak ring phenomenon of strength more at least, thread density ρ then from internal cause reacton yarn weight, in theory
It is lighter to represent there is the weak ring phenomenon of strength.This method will simultaneously judge from two angles, more objective, can accurately refer to
Lead actual production.The broken end parking caused by the weak ring of yarn strength is reduced, production efficiency and benefit is improved.
Further, the present invention by data and curve while show, the more weak ring estimate of situation of display strength directly perceived.
The device of the present invention is simple, by setting capacitance type sensor and photoelectric sensor, test on the yarn of motion
The line density M and irregular D of diameter, calculates thread density ρ, and Tn, the weak ring phenomenon of the strength of yarn is judged by thresholding, instructs actual
Production.The present invention can detect and remove the weak ring of yarn strength, improve production efficiency and benefit.
Further, detection means of the invention may be provided in production line or later stage quality check process, add the device
Application.
【Brief description of the drawings】
Fig. 1 is the weak ring detection of yarn strength of the present invention and the device block diagram removed.
Fig. 2 is the weak ring detection of yarn strength of the present invention and sweep-out method flow chart.
Yarn strength weak ring detections and the test curve figure removed of the Fig. 3 for the specific embodiment of the invention.
【Embodiment】
The present invention is described in further detail below in conjunction with the accompanying drawings, and described is explanation of the invention rather than limit
It is fixed.
As shown in figure 1, the weak ring detection of a kind of yarn strength of the invention and the device removed, including, capacitance type sensor is used
In obtaining thickness of yarn irregular signal of the yarn by capacitance type sensor test trough, photoelectric sensor leads to for obtaining yarn
Cross the irregular signal D of diameter of photoelectric sensor test trough；CPU, including, first processing units, according to yarn cross section number of fiber
Linear relationship between Tn and yarn linear density M calculates yarn cross section number of fiber Tn；Second processing unit, according to formulaCalculate thread density ρ values；Judging unit, judges that whether density p value is less than p value threshold value, and judge whether Tn is low
In Tn threshold values；If the Tn and ρ of yarn are below corresponding threshold value, there is the weak ring of strength in this section of yarn, carry out alarm and carry
Show；Memory cell, for data storage test data and curve.Wherein, capacitance type sensor and photoelectric sensor connect with CPU
Connect, first processing units and second processing unit are connected with judging unit.Also include the display unit being connected with CPU, be used for
Display and drafting curve, drawing curve includes drawing real-time yarn linear density M curves, draws the irregular signal D curves of diameter, drafting
Thread density ρ curve and ρ value threshold curves, draw yarn cross section number of fiber Tn and Tn threshold curves.
As shown in Fig. 2 the weak ring detection of yarn strength of the present invention and sweep-out method are comprised the following steps that：
1. obtaining the irregular signal of thickness of yarn in real time, calculate and obtain yarn linear density M, and draw real-time curve；
2. obtaining the irregular signal of diameter in real time, the irregular signal D of diameter is obtained, and draw real-time curve；
3. yarn cross section fibrous root is calculated according to the linear relationship between yarn cross section number of fiber Tn and yarn linear density M
Number Tn, draws real-time curve,
4. according to formulaCalculating obtains thread density ρ values, and draws curve.
5. judging whether thread density ρ values are less than ρ value threshold values, and judge whether yarn cross section number of fiber Tn is less than Tn
Threshold value；If the Tn and ρ of yarn are below corresponding threshold value, there is the weak ring of strength in this section of yarn；Simultaneously can also basis
The curve of drafting more intuitively reads the relation between Tn and ρ and its thresholding.Carried out if being judged as having the weak ring of strength clear
Except process.Described ρ values threshold value is (0~40%)WhereinFor the real-time average value of ρ values.
The present invention principle be：The yarn of motion is thick by yarn respectively simultaneously by capacitance sensor and photoelectric sensor
The thin irregular irregular signal of signal and diameter send dependent processing unit to be handled.Yarn is thick by exporting yarn after capacitance sensor
Thin irregular signal send processing unit to be handled, by the number of fiber for exporting the irregular signal of change sectional area of yarn linear density
Tn, Tn=k1 × M, k1 are proportionality coefficient.The quality of the yarn of unit length is line density M, and yarn passes through photoelectric sensor
Export the irregular signal D of yarn diameter, it is assumed that yarn is cylinder, its density：
By line density M divided by diameter D2, you can output thread density, when the Tn values of certain section of yarn are less than certain value yarn simultaneously
Line density ρ values are less than threshold value, and this section of yarn has the weak ring of strength.
As shown in figure 3, testing one section of yarn, obtained line density figure and corresponding density curve according to the method for the present invention
Figure, by Tu Ke get, curvilinear motion of the density p curve compared with line density M rises and falls greatly, and fluctuation is interrelated, closeer than direct p-wire
Degree M more can intuitively react the actual quality condition of yarn, and especially phantom line segments occur in that obvious yarn defect.By comparing this
The density p value in section region is less than threshold value, and less than the Tn values of quality requirement, then judges that this section of yarn has the weak ring of strength.Cause
In this actual production process, it was observed that the curve of this section of yarn significantly goes wrong, and relatively drawn strongly by data
Weak ring phenomenon, then carry out the work of this section of yarn of excision, and progress connects yarn process, defective products is directly eliminated on a production line, protects
The follow-up quality of production has been demonstrate,proved, the broken end parking caused by the weak ring of yarn strength has been reduced, production efficiency and benefit is improved, to reality
It is significant that border is produced.
Claims (7)
1. a kind of weak ring detection of yarn strength and the method removed, it is characterised in that comprise the following steps：
The irregular signal of thickness of yarn is obtained in real time, is calculated and is obtained yarn linear density M；
The irregular signal of diameter is obtained in real time, obtains the irregular signal D of diameter；
Yarn cross section number of fiber Tn is calculated according to the linear relationship between yarn cross section number of fiber Tn and yarn linear density M,
Tn=k1 × M, k1 are proportionality coefficient；
According to formulaK is constant, and calculating obtains thread density ρ values；
Judge whether thread density ρ values are less than ρ value threshold values, and judge whether yarn cross section number of fiber Tn is less than Tn thresholdings
Value；If the Tn and ρ of yarn are below corresponding threshold value, there is the weak ring of strength in this section of yarn；It is purged process.
2. a kind of weak ring detection of yarn strength and the method removed according to claim 1, it is characterised in that described ρ
It is 40% to be worth threshold valueWhereinFor the real-time average value of ρ values.
3. a kind of weak ring detection of yarn strength and the method removed according to claim 1, it is characterised in that also including painting
Koji-making line step：
Real-time yarn linear density M curves are drawn,
The irregular signal D curves of diameter are drawn,
Thread density ρ curve and ρ value threshold curves is drawn,
Draw yarn cross section number of fiber Tn and Tn threshold curves.
4. a kind of weak ring detection of yarn strength and the device removed, it is characterised in that including
Capacitance type sensor, for obtaining thickness of yarn irregular signal M of the yarn by capacitance type sensor test trough,
Photoelectric sensor, for obtaining diameter irregular signal D of the yarn by photoelectric sensor test trough；
CPU, including,
First processing units, calculate yarn fine according to the linear relationship between yarn cross section number of fiber Tn and yarn linear density M
Tie up radical Tn；Tn=k1 × M, k1 are proportionality coefficient；
Second processing unit, according to formulaThread density ρ values are calculated, k is constant；
Judging unit, judges whether density p value is less than p value threshold value, and judges whether Tn is less than Tn threshold values；If the Tn of yarn
Corresponding threshold value is below with ρ, then this section of yarn has the weak ring of strength, carries out alarm；
Wherein, capacitance type sensor and photoelectric sensor are connected with CPU, and first processing units and second processing unit are with sentencing
Disconnected unit connection.
5. the weak ring detection of yarn strength according to claim 4 and the device removed, it is characterised in that also include and CPU
The display unit of connection, for showing and drawing curve, drawing curve includes drawing real-time yarn linear density M curves, draws straight
The irregular signal D curves in footpath, draw thread density ρ curve and ρ value threshold curves, draw yarn fibers radical Tn bent with Tn thresholdings
Line.
6. the weak ring detection of yarn strength according to claim 4 and the device removed, it is characterised in that also include in CPU
Memory cell, for storing test data and curve.
7. the weak ring detection of yarn strength according to claim 4 and the device removed, it is characterised in that described condenser type
Sensor and photoelectric sensor are disposed adjacent, and are arranged on detection on the production line of yarn and are produced yarn or be arranged on subsequent detection work
It is used to yarn qualities in sequence detect.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510398471.7A CN104975388B (en) | 2015-07-08 | 2015-07-08 | A kind of weak ring detection of yarn strength and the method and its device removed |
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| CN201510398471.7A CN104975388B (en) | 2015-07-08 | 2015-07-08 | A kind of weak ring detection of yarn strength and the method and its device removed |
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| CN104975388A CN104975388A (en) | 2015-10-14 |
| CN104975388B true CN104975388B (en) | 2017-10-27 |
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| CN106226314B (en) * | 2016-07-28 | 2018-09-07 | 中国纺织科学研究院 | Yarn evenness measurement method based on yarn cross section perimeter |
| CN106680468B (en) * | 2016-12-26 | 2019-03-29 | 江苏圣蓝科技有限公司 | A kind of analysis method that thickness of yarn is irregular and device |
| CN109633133B (en) * | 2018-11-16 | 2021-08-24 | 绍兴文理学院元培学院 | Method for testing fiber number in yarn |
| CN113445296B (en) * | 2021-06-29 | 2022-11-25 | 泰山玻璃纤维邹城有限公司 | Device and method for detecting hollow fibers of glass fiber electronic cloth |
| CN115142160B (en) * | 2022-08-22 | 2023-12-19 | 无锡物联网创新中心有限公司 | Identification method and related device for strong weak ring of yarn |
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| JPS51116255A (en) * | 1975-04-07 | 1976-10-13 | Asahi Chemical Ind | Tester for yarn quality |
| CZ298929B6 (en) * | 2000-11-02 | 2008-03-12 | Rieter Cz A. S. | Device for contactless measurement of a linear textile formation |
| CN1195220C (en) * | 2003-06-26 | 2005-03-30 | 东华大学 | Method and system for measuring qaulity of multi component yarns |
| CN201512630U (en) * | 2009-09-27 | 2010-06-23 | 江苏圣蓝科技有限公司 | Electric yarn clearer with master-slave mode dual sensors |
| CN103270413A (en) * | 2010-10-19 | 2013-08-28 | 乌斯特技术股份公司 | Yarn clearer and method for clearing yarn |
| JP5998709B2 (en) * | 2012-07-27 | 2016-09-28 | 村田機械株式会社 | Yarn monitoring device and yarn winding unit |
| CN203079425U (en) * | 2013-01-30 | 2013-07-24 | 江苏圣蓝科技有限公司 | Ring spinning automatic winder electronic yarn clearer with on-line spectrum analysis function |
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