CN107246832B - Yarn sag measuring device and method - Google Patents
Yarn sag measuring device and method Download PDFInfo
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- CN107246832B CN107246832B CN201710317712.XA CN201710317712A CN107246832B CN 107246832 B CN107246832 B CN 107246832B CN 201710317712 A CN201710317712 A CN 201710317712A CN 107246832 B CN107246832 B CN 107246832B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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Abstract
The invention discloses a yarn draping degree measuring device and a method, wherein the yarn draping degree measuring device comprises a left testing mechanism, yarn and a right testing mechanism, the left testing mechanism comprises a bottom surface flat plate A, a support rod A, an air cylinder, an air pressure regulating valve and a guide wheel, and the guide wheel, the air cylinder and a support plate are sequentially arranged on the front surface of the support rod A from top to bottom; a method for carrying out experiments using the yarn drape measuring device of the present invention, comprising the following implementation steps: s1, experimental installation of the yarn on the device; s2, adjusting the air pressure of the air cylinder; s3, carrying out a yarn drapability measurement experiment; s4, measuring and recording the yarn sag. The invention has the beneficial effects that: simple structure, convenient operation, saving manual work, measurement accuracy height.
Description
Technical Field
The invention relates to a device and a method for measuring yarn sag.
Background
The drape of a cord is the difference in length between the longest and shortest yarns after untwisting the cord per unit length into a single yarn. The method is an important technical index for measuring the tension uniformity among single yarns of the cotton rope, and relates to the strength retention rate of the single yarns after rope combination.
At present, some patents have appeared on special devices for measuring the sagging of the wire. The Chinese patent 'thread rope sag gauge (patent number: CN 200420078799.8)' discloses an instrument and equipment for measuring the thread rope sag, which can realize the purpose of measuring the thread rope sag in the technical field range, mainly comprises a twist tester and a thickness gauge reading device, and has the technical effects that: this cotton rope degree of hanging appearance, reasonable in design, convenient operation through the setting of tension fine setting ware 6, with known given tension, the elastic deformation of control cotton rope has improved the reproducibility and the comparability of experimental result to increased measuring result's accuracy, the personal error that has significantly reduced, but its shortcoming lies in that the manual operation volume is big, and pulling force's adjustment is gone on according to the weight, and the scope of general adjustment is limited or the clearance of adjustment is big, has certain measurement accuracy but still not enough. In the current test, the measurement error caused by manual stretching is large, and more people need to measure the yarn drapability, which is not favorable for measuring the yarn drapability.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a yarn draping degree measuring device and method which are simple in structure, convenient to operate, labor-saving and high in measuring precision.
The purpose of the invention is realized by the following technical scheme: a yarn sag measuring device comprises a left testing mechanism, yarns and a right testing mechanism, wherein the left testing mechanism comprises a bottom surface flat plate A, a support rod A, an air cylinder, an air pressure regulating valve and a guide wheel, the support rod A is a columnar body with a rectangular cross section, the lower end of the support rod A is fixedly and vertically installed on the bottom surface flat plate A, the bottom surface flat plate A is horizontally placed on a horizontal plane or a horizontal table surface, the guide wheel, the air cylinder and the support plate are sequentially installed on the front surface of the support rod A from top to bottom, the guide wheel is fixedly installed at the upper end part of the support rod A through a central shaft, the support plate is fixedly installed at the middle section position of the support rod A, the air cylinder is fixedly placed on the support plate, the air cylinder is located right below the guide wheel, the air pressure regulating valve is fixedly installed at the middle section position of the side surface of the support; the right testing mechanism comprises a bottom surface flat plate B, a support rod B and a hook, the connection relation between the bottom surface flat plate B and the support rod B is the same as that between the bottom surface flat plate A and the support rod A, and the hook is fixedly arranged at the head part of the upper end of the support rod B; one end of the yarn is connected to the hook, and the other end of the yarn is connected to the output shaft of the cylinder by bypassing the guide wheel.
Further, the installation height of the guide wheel and the hook is the same and the guide wheel and the hook are on the same horizontal line.
Furthermore, an electromagnetic valve is fixedly installed on the cylinder, and the working condition of the cylinder is controlled by the electromagnetic valve.
Furthermore, the hook comprises a rotary stress wheel and a hook body, the rotary stress wheel is hinged to the hook body, and the rotary stress wheel can rotate around the hook body for a certain angle in a vertical plane.
Furthermore, the air pressure regulating valve is provided with an air pressure meter for detecting air pressure and indicating the air pressure.
A method for carrying out experiments using the yarn drape measuring device of the present invention, comprising the following implementation steps:
s1, experimental installation of yarn on the apparatus: firstly, pulling one end of yarn, pulling the yarn with proper length, binding the yarn end into a circular section and binding the circular section on a stress wheel of a hook, and then binding the other end of the yarn on an output shaft;
s2, air pressure adjustment of the air cylinder: adjusting the air pressure of the air cylinder according to the density of the yarns, and rotating an air pressure knob of the air pressure adjusting valve to adjust the air pressure to an air pressure value corresponding to the density model of the yarns;
s3, performance of yarn drape measurement experiment: starting the air cylinder, tensioning and straightening the yarn, simultaneously rotating the rotary stress wheel 14 to separate the yarn with twist, removing the twist and completely separating the yarn;
s4, measurement and recording of yarn sag: and (3) measuring two positions with the largest distance difference in the vertical direction of the yarns by using a steel ruler or a distance measuring instrument, wherein the measured distance difference is the drapability value of the yarns, recording the value, and finishing the measurement experiment of the drapability of the yarns.
Further, the step S4 also includes the steps of reduction and finishing of the experimental device: and after the yarn drapability measurement experiment is completed, the tensile force of the air cylinder is removed, the yarn is taken down, and the experimental device is restored and arranged.
Further, for step S2, the correspondence between the density X of the yarn and the air pressure P of the air cylinder is: 4.800 is less than or equal to X of 9.600, P is 0.05; x is more than or equal to 9.600 and less than 19.200, and P is 0.1; x is not less than 19.200, and P is 0.2; wherein, the unit of density X: g/cm3Unit of gas pressure P: mpa.
The invention has the following advantages:
1. the yarn drapability measuring device and method have the characteristics of simple structure and convenience in operation, the overall structure of the yarn drapability measuring device is very simple, and the principle is popular and easy to understand; then, the invention changes the pendant type measurement adopted by the original national standard into the air pressure tension measurement, and provides a suspension degree measurement method, the adjustment of the air pressure tension is very convenient, the precision of the tension adjustment is high, and meanwhile, the invention is integrally and simply operated.
2. The yarn drapability measuring device and method also have the advantages of labor saving and high measuring precision, when the yarn drapability measuring device and method is used for measuring the yarn drapability, the measuring work can be independently completed by one person without the participation of a plurality of persons, and therefore the labor can be saved; in addition, the invention only has system error and reading measuring instrument error, eliminating artificial error in traditional measuring mode, and greatly improving measuring precision.
Drawings
FIG. 1 is a schematic view of a front perspective structure of a yarn sag measuring device according to the present invention;
FIG. 2 is a schematic flow chart of the steps of the experimental method of the present invention;
in the figure: 1-a support rod A, 2-a support rod B, 3-a support plate, 4-a cylinder, 5-an air pressure adjusting valve, 6-a guide wheel, 7-an output shaft, 8-a barometer, 9-yarn, 10-a hook, 11-a bottom plate A, 12-a bottom plate B, 13-an electromagnetic valve, 14-a rotating stress wheel and 15-a hook body.
Detailed Description
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following.
As shown in fig. 1, a yarn sag measuring device includes a left testing mechanism, a yarn 9 and a right testing mechanism, the left testing mechanism comprises a bottom surface flat plate A11, a support rod A1, an air cylinder 4, an air pressure regulating valve 5 and a guide wheel 6, wherein the support rod A1 is a columnar body with a rectangular cross section, the lower end of the support rod A1 is fixedly and vertically arranged on the bottom surface flat plate A11, the bottom surface flat plate A11 is horizontally arranged on a horizontal flat surface or a horizontal table surface, the guide wheel 6, the air cylinder 4 and a support plate 3 are sequentially arranged on the front surface of the support rod A1 from top to bottom, the guide wheel 6 is fixedly arranged at the upper end part of the support rod A1 through a central shaft, the support plate 3 is fixedly arranged at the middle section of the support rod A1, the air cylinder 4 is fixedly placed on the support, the air cylinder 4 is positioned right below the guide wheel 6, an air pressure regulating valve 5 is fixedly installed at the middle section of the side surface of the strut rod A1, and the air pressure regulating valve 5 is connected with the air cylinder 4; the right testing mechanism comprises a bottom surface flat plate B12, a support column rod B2 and a hook 10, the connection relation between the bottom surface flat plate B12 and the support column rod B2 is the same as that between the bottom surface flat plate A11 and the support column rod A1, and the hook 10 is fixedly installed at the head part of the upper end of the support column rod B2; one end of the yarn 9 is connected to the hook 10, and the other end of the yarn 9 is connected to the output shaft 7 of the cylinder 4 by passing through the guide wheel 6.
Furthermore, as a preferred embodiment of the device, the guide wheel 6 and the hook 10 are installed at the same height and on the same horizontal line; the cylinder 4 is fixedly provided with an electromagnetic valve 13, and the working condition of the cylinder 4 is controlled by the electromagnetic valve 13; the hook 10 comprises a rotary stress wheel 14 and a hook body 15, the rotary stress wheel 14 is hinged on the hook body 15, and the rotary stress wheel 14 can rotate around the hook body 15 for a certain angle in a vertical plane; and the air pressure regulating valve 5 is provided with an air pressure meter 8 for detecting air pressure and indicating the air pressure.
As shown in fig. 2, the experimental method using the yarn drape measuring apparatus of the present invention includes the following steps:
s1, experimental installation of yarn 9 on the apparatus: firstly, pulling one end of a yarn 9, pulling the yarn 9 with proper length, binding the yarn end into a circular section and binding the circular section on a stress wheel 14 of a hook 10, and then binding the other end of the yarn 9 on an output shaft 7;
s2, air pressure adjustment of the air cylinder 4: adjusting the air pressure of the air cylinder 4 according to the density of the yarn 9, and rotating an air pressure knob of the air pressure adjusting valve 5 to adjust the air pressure to an air pressure value corresponding to the density model of the yarn 9;
s3, performance of yarn drape measurement experiment: starting the air cylinder 4, tensioning and straightening the yarn 9, simultaneously rotating the rotary stress wheel 14 to separate the yarn 9 with twist, removing the twist, and completely separating the yarn 9;
s4, measurement and recording of yarn sag: and (3) measuring two positions with the largest distance difference in the vertical direction of the yarns 9 by using a steel ruler or a distance measuring instrument, wherein the measured distance difference is the draping degree value of the yarns 9, recording the value, and finishing the measurement experiment of the draping degree of the yarns.
Further, as a preferred embodiment of the method, the step S4 further includes a reduction and finishing step of the experimental device: after the yarn drapability measurement experiment is completed, the pulling force of the air cylinder 4 is removed, the yarn 9 is taken down, and the experimental device is restored and arranged. For step S2, the correspondence between the density X of the yarn 9 and the air pressure P of the air cylinder 4 is: 4.800 is less than or equal to X of 9.600, P is 0.05; x is more than or equal to 9.600 and less than 19.200, and P is 0.1; x is not less than 19.200, and P is 0.2; wherein, the unit of density X: g/cm3Unit of gas pressure P: mpa.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A yarn overhang measuring device, comprising: the device comprises a left testing mechanism, yarns (9) and a right testing mechanism, wherein the left testing mechanism comprises a bottom surface flat plate A (11), a support rod A (1), an air cylinder (4), an air pressure regulating valve (5) and a guide wheel (6), the support rod A (1) is a columnar body with a rectangular cross section, the lower end of the support rod A (1) is fixedly and vertically arranged on the bottom surface flat plate A (11), the bottom surface flat plate A (11) is horizontally arranged on a horizontal plane or a horizontal table surface, the guide wheel (6), the air cylinder (4) and a support plate (3) are sequentially arranged on the front surface of the support rod A (1) from top to bottom, the guide wheel (6) is fixedly arranged at the upper end part of the support rod A (1) through a central shaft, the support plate (3) is fixedly arranged at the middle section position of the support rod A (1), the air cylinder (4) is fixedly arranged on the support plate (3), and the air cylinder (4) is positioned right, an air pressure regulating valve (5) is fixedly installed at the middle section of the side surface of the strut rod A (1), and the air pressure regulating valve (5) is connected with the air cylinder (4); the right testing mechanism comprises a bottom surface flat plate B (12), a support rod B (2) and a hook (10), the connection relation between the bottom surface flat plate B (12) and the support rod B (2) is the same as the connection relation between the bottom surface flat plate A (11) and the support rod A (1), and the hook (10) is fixedly installed at the head part of the upper end of the support rod B (2); one end of the yarn (9) is connected to the hook (10), and the other end of the yarn (9) is connected to an output shaft (7) of the cylinder (4) by bypassing the guide wheel (6); the guide wheel (6) and the hook (10) are installed at the same height and are positioned on the same horizontal line; the hook (10) comprises a rotary stress wheel (14) and a hook body (15), the rotary stress wheel (14) is hinged to the hook body (15), and the rotary stress wheel (14) can rotate for a certain angle around the hook body (15) in a vertical plane.
2. The apparatus of claim 1, wherein: the air cylinder (4) is fixedly provided with an electromagnetic valve (13), and the working condition of the air cylinder (4) is controlled by the electromagnetic valve (13).
3. The apparatus of claim 1, wherein: and a barometer (8) for detecting air pressure and indicating the air pressure is arranged on the air pressure regulating valve (5).
4. A method for conducting a yarn perpendicularity measurement experiment using the apparatus of any one of claims 1-3, wherein: the method comprises the following implementation steps:
s1, experimental installation of yarn (9) on the apparatus: firstly, pulling one end of a yarn (9), pulling the yarn (9) with a proper length, binding the yarn end into a circular section and binding the circular section on a stress wheel (14) of a hook (10), and then binding the other end of the yarn (9) on an output shaft (7);
s2, air pressure adjustment of the air cylinder (4): the air pressure of the air cylinder (4) is adjusted according to the density of the yarns (9), and an air pressure knob of the air pressure adjusting valve (5) is rotated to adjust the air pressure to an air pressure value corresponding to the density model of the yarns (9);
s3, performance of yarn drape measurement experiment: starting the air cylinder (4), tensioning and straightening the yarn (9), simultaneously rotating the rotary stress wheel (14) to separate the yarn (9) with twist, removing the twist and completely separating the yarn (9);
s4, measurement and recording of yarn sag: and (3) measuring two positions with the largest distance difference in the vertical direction of the yarn (9) by using a steel ruler or a distance measuring instrument, wherein the measured distance difference is the draping degree value of the yarn (9), recording the value, and finishing the measurement experiment of the draping degree of the yarn.
5. The method of claim 4, wherein: the step S4 also includes the reduction and finishing steps of the experimental apparatus: and after the yarn drapability measurement experiment is completed, the tensile force of the air cylinder (4) is removed, the yarn (9) is taken down, and the experimental device is restored and arranged.
6. The method of claim 4, wherein: for step S2, the correspondence between the density X of the yarn (9) and the air pressure P of the cylinder (4) is: 4.800 is less than or equal to X of 9.600, P is 0.05; x is more than or equal to 9.600 and less than 19.200, and P is 0.1; x is not less than 19.200, and P is 0.2; wherein, the unit of density X: g/cm3Unit of gas pressure P: mpa.
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| CN201710317712.XA CN107246832B (en) | 2017-05-08 | 2017-05-08 | Yarn sag measuring device and method |
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| CN201710317712.XA CN107246832B (en) | 2017-05-08 | 2017-05-08 | Yarn sag measuring device and method |
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| CN107246832A CN107246832A (en) | 2017-10-13 |
| CN107246832B true CN107246832B (en) | 2020-07-07 |
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| CN113552330B (en) * | 2021-07-28 | 2023-07-18 | 绍兴柯桥华绍纺织有限公司 | Yarn high-toughness breakage-proof inspection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS63208706A (en) * | 1987-02-25 | 1988-08-30 | Matsushita Electric Ind Co Ltd | Takeup inspecting instrument for cord reel unit |
| CN2716799Y (en) * | 2004-08-20 | 2005-08-10 | 中材科技股份有限公司 | Cord pendency degree meter |
| CN101216483B (en) * | 2007-12-28 | 2011-05-11 | 宁波市纤维检验所 | Yarn crimp tester |
| CN201535751U (en) * | 2009-09-12 | 2010-07-28 | 颜文法 | Fabric density admeasuring apparatus |
| CN202323225U (en) * | 2011-11-10 | 2012-07-11 | 王平 | Twist tester |
| CN102680264B (en) * | 2012-05-23 | 2014-04-30 | 浙江大学 | Wind load testing device and method of vehicle-mounted mast lifting system |
| CN202898646U (en) * | 2012-11-01 | 2013-04-24 | 芜湖富春染织有限公司 | Hand-rotating type yarn twisting instrument |
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