CN104849208A - Fiber friction coefficient testing device and testing method thereof - Google Patents
Fiber friction coefficient testing device and testing method thereof Download PDFInfo
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- CN104849208A CN104849208A CN201510315562.XA CN201510315562A CN104849208A CN 104849208 A CN104849208 A CN 104849208A CN 201510315562 A CN201510315562 A CN 201510315562A CN 104849208 A CN104849208 A CN 104849208A
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- 239000000835 fiber Substances 0.000 title claims abstract description 78
- 238000012360 testing method Methods 0.000 title claims abstract description 42
- 238000009434 installation Methods 0.000 claims description 18
- 238000005259 measurement Methods 0.000 claims description 10
- 238000004458 analytical method Methods 0.000 claims description 9
- 238000010998 test method Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 238000005303 weighing Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229920000433 Lyocell Polymers 0.000 description 1
- 238000000418 atomic force spectrum Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000008041 oiling agent Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
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Abstract
The invention relates to a fiber friction coefficient testing device and a testing method thereof. The fiber friction coefficient testing device comprises a friction roller, a hook, a first tension clamp, a second tension clamp, a first stepping motor, a force sensor, an amplifier, a first pulse distributor, a computer and input-output equipment; the structure can be used for testing the fiber friction of the friction roller in a rotating manner; the testing device further comprises a second stepping motor, a first gear, a synchronous toothed belt, a second gear, a screw rod, a screwed block, an upper limiter, a lower limiter and a second pulse distributor. The additional structure can be used for testing the fiber friction of the friction roller in a lifting manner. According to the testing device and the testing method, the testing precision is high, the testing efficiency is high, the fluctuation changing curve of frication force can be displayed in real time, the fiber friction coefficient can be automatically analyzed and the friction force variation can be detected.
Description
Technical field
The invention belongs to fibrous material surveying instrument field, particularly a kind of frictional coefficient of fiber proving installation and method of testing thereof.
Background technology
Frictional coefficient of fiber refers to friction force between two surface in contacts and acts on the ratio of the vertical force in surface thereof, and it is relevant with the roughness of fiber surface, and irrelevant with the size of contact area.Frictional coefficient of fiber and textile manufacturing and yarn property relation very close.In fiber spun yarn process, need in some cases to increase the friction between fiber, as roller loading, Yarn twisting etc.; Other occasions then need to reduce the friction between fiber, as bright and clean in chemical fiber oiling agent, fiber channel etc.Fibre frictoin characteristic also can have influence on the feel of its manufactured goods, pilling, the wearability such as wear-resisting, crease-resistant.Therefore, study frictional coefficient of fiber proving installation and method of testing significant.
Current fibre friction coefficient testing method many employings sieve get Shi method (Roeder), its principle is enclosed at a certain angle on friction roller by fiber, fiber two ends apply equal tension, when reducing fiber one end tension force or pivoting friction roller, because fiber and friction roller surface exist friction force, fiber one end tension force can diminish, and records this tension variation by device for measuring force, according to Euler's formula, calculate frictional coefficient of fiber.Adopt the instrument of this principle test frictional coefficient of fiber with Y151 fiber type frictionmeter for representative, its feature mainly drives friction roller to rotate with individual event capacitor-run asynchronous motor and speed-changing gear box, and uses weighing scale to test twisting force as device for measuring force.This instrument can only set 8 grades of friction roller velocities of rotation by speed-changing gear box, can not provide more velocities of rotation, to study the impact of friction roller rotating speed on frictional coefficient of fiber.This instrument device for measuring force uses weighing scale to test twisting force, and its force value resolution is lower by (0.5 × 10
-3cN), force measurement scope is less by (250 × 10
-3cN), rotation weighing scale to test twisting force handle and artificial visually examine's reading may cause operate miss, and require higher to the skill level of operating personnel.Therefore, according to the testing requirement of frictional coefficient of fiber, frictional coefficient of fiber in the urgent need to a kind of electronic type is tested, force value precision is high and range is large and the frictional coefficient of fiber tester that friction roller velocity of rotation accurately regulates by input stepper motor frequency, to improve test result accuracy and testing efficiency.
Summary of the invention
The object of the present invention is to provide a kind of frictional coefficient of fiber proving installation and method of testing thereof, mainly solve the problem existing for above-mentioned prior art, its measuring accuracy is high, testing efficiency is high, and Fluctuation of Dynamic Friction change curve can be shown in real time, friction force variation size in automatic analysis frictional coefficient of fiber and test process.
For achieving the above object, the present invention realizes like this.
A kind of frictional coefficient of fiber proving installation, is characterized in that: it comprises friction roller, hook, the first clips, the second clips, the first stepper motor, force snesor, amplifier, the first pulsqe distributor, computing machine and input-output device thereof; Wherein: this friction roller hangs with the sample in angle of contact; This first clips clamps sample one end, and this first clips is connected with force snesor by hook; The force value resolution 0.25 × 10 of this force snesor
-3below cN, force measurement scope 1000 × 10
-3more than cN; This force snesor is connected with computing machine further by amplifier; This second clips is clamped the sample other end and is made the second clips freely hang over friction roller another side; The first stepping motor-driven rotation that this friction roller is controlled by the first pulsqe distributor by computing machine.
Described frictional coefficient of fiber proving installation, is characterized in that: this device comprises the second stepper motor, the first gear, synchromesh gear belt, the second gear, screw mandrel, spiral shell block, upper limiter, lower limiter, the second pulsqe distributor further; Wherein: this screw mandrel is erect and arranged and on screw mandrel, arrange spiral shell block, and this spiral shell block connects friction roller; This screw mandrel one end connects the drive mechanism be made up of the first gear, synchromesh gear belt, the second gear, and the second stepper motor that this drive mechanism is controlled by the second pulsqe distributor by computing machine connects driving; The up and down path of this spiral shell block has upper limiter and lower limiter respectively.
Described frictional coefficient of fiber proving installation, is characterized in that: this input-output device is display and/or printer.
A kind of frictional coefficient of fiber method of testing, is characterized in that: it adopts proving installation as above, and concrete steps comprise:
A first clips and the second clips clamp the two ends of sample, then sample is hung on friction roller, and the first clips hangs on hook, and the second clips freely hangs over friction roller another side, now, ride the sample two ends hung on friction roller and are subject to equal tension effect;
B carries out friction roller and rotates test fibre frictoin:
Computing machine drives the first stepping driven by motor friction roller to rotate by the first pulsqe distributor, because rubbing action friction roller drives sample mobile on friction roller surface, first clips weight is loaded on hook lentamente, computing machine receives and the load signal linking up with force snesor and the amplifier be connected, show load-time curve in real time on an output device, after setting-up time, friction roller stops operating;
C computer automatic analysis load-time curve, obtains the friction force of fiber samples, calculates frictional coefficient of fiber according to Euler's formula.
A kind of frictional coefficient of fiber method of testing, is characterized in that: it adopts proving installation as above, and concrete steps comprise:
A first clips and the second clips clamp the two ends of sample, then sample is hung on friction roller, and the first clips hangs on hook, and the second clips freely hangs over friction roller another side, now, ride the sample two ends hung on friction roller and are subject to equal tension effect;
B1 carries out friction roller lifting test fibre frictoin:
Computing machine drives the second stepping electric machine rotation by the second pulsqe distributor, friction roller is driven to decline from upper limit device place by the first gear, synchromesh gear belt, the second gear, screw mandrel, spiral shell block, first clips weight is loaded on hook lentamente, computing machine receives and the load signal linking up with force snesor and the amplifier be connected, load-time curve is shown on an output device during Real-time, to setting-up time or after arriving lower limiter position, friction roller stopping declines and rises to initial position;
C computer automatic analysis load-time curve, obtains the friction force of fiber samples, calculates frictional coefficient of fiber according to Euler's formula.
Compared with prior art advantage of the present invention is as follows:
1, highly sensitive force snesor is adopted to replace traditional mechanical weighing scale to test twisting force force measuring method, instrument force value resolution 0.25 × 10 in apparatus of the present invention
-3below cN, force measurement scope 1000 × 10
-3more than cN; Old-fashioned weighing scale to test twisting force instrument force value resolution 0.5 × 10
-3cN, force measurement scope 250 × 10
-3cN, the dynamometry precision of apparatus of the present invention and range significantly improve, and this is particularly important to fibre frictoin small value force measurement accuracy.The operate miss that instrument employing High Precision Strength Measurement Sensor avoids old-fashioned instrument rotation weighing scale to test twisting force handle and artificial visually examine's reading to cause.
2, the fiber friction force measurement of apparatus of the present invention has two kinds of modes available, comprises friction roller and rotates test fibre frictoin and friction roller lifting test fibre frictoin two kinds, can need to carry out selection arrange according to research work.
3, apparatus of the present invention can change in friction force curve in display measurement process in real time, and test result can be carried out Computer Storage, is convenient to the analysis and research of all kinds of tencel material friction performance comparison.
4, the friction roller velocity of rotation of apparatus of the present invention accurately regulates by input stepper motor frequency, is conducive to the research that friction roller velocity of rotation affects frictional coefficient of fiber.
5, apparatus of the present invention can be used for the test of wool type and cotton two kinds of different length frictional coefficient of fibers, and legacy instrument is more difficult to 38mm cotton-type short fiber PVvalue testing.
Accompanying drawing explanation
Fig. 1 is the structural representation of frictional coefficient of fiber proving installation one of the present invention preferred embodiment.
In Fig. 1,1-sample, 2-friction roller, 3-hook, 4-the first clips, the 5-the second clips, the 6-the first stepper motor, 7-force snesor, 8-amplifier, the 9-the first stepper motor, the 10-the first gear, 11-synchromesh gear belt, 12-the second gear, 13-screw mandrel, 14-spiral shell block, 15-upper limiter, 16-lower limiter, the 17-the first pulsqe distributor, the 18-the second pulsqe distributor, 19-computing machine, 20-display, 21-printer.
Fig. 2 is the schematic perspective view of apparatus of the present invention casing and guidance panel.
In Fig. 2,22-casing, 221-upper case, 2211-organic glass door, 222-lower case, 2221-potentiometer, 2222-reset button, 2223-testing button, 2224-button falls, 2225-stop button, 2226-rise button, 2227-power switch.
Embodiment
The present invention is introduced further below in conjunction with drawings and Examples.
Refer to Fig. 1, it is the structural representation of a kind of frictional coefficient of fiber proving installation one of the present invention preferred embodiment.As shown in the figure: it comprises friction roller 2, hook the 3, first clips 4, second clips 5, first stepper motor 6, force snesor 7, amplifier 8, first pulsqe distributor 17, computing machine 19 and input-output device thereof; Wherein: this friction roller 2 hangs with the sample 1 in angle of contact; This first clips 4 clamps sample 1 one end, and this first clips 4 is connected with force snesor 7 by hook 3; The force value resolution 0.25 × 10 of this force snesor 7
-3below cN, force measurement scope 1000 × 10
-3more than cN; This force snesor 7 is connected with computing machine 19 further by amplifier 8; This second clips 4 is clamped sample 1 other end and is made the second clips 4 freely hang over friction roller 2 another side; The first stepper motor 6 that this friction roller 2 is controlled by the first pulsqe distributor 17 by computing machine 19 drives rotation.This input-output device is display 20 and/or printer 21.
Adopt proving installation as above, concrete steps comprise:
A first clips 4 and the second clips 5 clamp the two ends of sample 1, again sample 1 is hung on friction roller 2, the first clips 4 hangs on hook 3, and the second clips 5 freely hangs over friction roller 2 another side, now, ride sample 1 two ends hanging on friction roller 2 and be subject to equal tension effect;
B carries out friction roller and rotates test fibre frictoin (standing test event):
Computing machine 19 drives the first stepper motor 6 to drive friction roller 2 to rotate by the first pulsqe distributor 17, because rubbing action friction roller 2 drives sample 1 mobile on friction roller surface, first clips 4 weight is loaded on hook 3 lentamente, computing machine 19 receives and the load signal linking up with 3 force snesor be connected 7 and amplifier 8, show load-time curve in real time on an output device, after setting-up time, friction roller 2 stops operating;
C computing machine 19 automatic analysis load-time curve, obtains the friction force of fiber samples 1, calculates frictional coefficient of fiber according to Euler's formula.
Euler's formula is as follows:
In formula: f
0, f
1for riding tension force suffered by the fiber two ends that hang on friction roller, f
0equal clips 5 load; μ is the friction factor on fiber and friction roller surface; θ is the contact angle (Rad) on fiber and friction roller surface; E is natural constant.F
1equal f
0with f
2difference, wherein, f
2for device for measuring force records load.
When the contact angle θ on fiber and friction roller surface equals π, frictional coefficient of fiber μ is:
Please consult Fig. 1 further, as preferred embodiment, this device can comprise the second stepper motor 9, first gear 10, synchromesh gear belt 11, second gear 12, screw mandrel 13, spiral shell block 14, upper limiter 15, lower limiter 16, second pulsqe distributor 18 further; Wherein: this screw mandrel 13 is erect and arranged and arrange spiral shell block 14 on screw mandrel 13, and this spiral shell block 14 connects friction roller 2; This screw mandrel 13 one end connects the drive mechanism be made up of the first gear 10, synchromesh gear belt 11, second gear 12, and the second stepper motor 9 that this drive mechanism is controlled by the second pulsqe distributor 18 by computing machine 19 connects driving; The up and down path of this spiral shell block 14 has upper limiter 15 and lower limiter 16 respectively.
Proving installation as above, concrete steps comprise:
A first clips 4 and the second clips 5 clamp the two ends of sample 1, again sample 1 is hung on friction roller 2, the first clips 4 hangs on hook 3, and the second clips 5 freely hangs over friction roller 2 another side, now, ride sample 1 two ends hanging on friction roller 2 and be subject to equal tension effect;
B carries out friction roller and rotates test fibre frictoin
Computing machine 19 drives the first stepper motor 6 to drive friction roller 2 to rotate by the first pulsqe distributor 17, because rubbing action friction roller 2 drives sample 1 mobile on friction roller surface, first clips 4 weight is loaded on hook 3 lentamente, computing machine 19 receives and the load signal linking up with 3 force snesor be connected 7 and amplifier 8, show load-time curve in real time on an output device, after setting-up time, friction roller 2 stops operating;
C computing machine 19 automatic analysis load-time curve, obtains the friction force of fiber samples 1, calculates frictional coefficient of fiber according to Euler's formula.
B1 carries out friction roller lifting test fibre frictoin (optional test event):
Computing machine 19 drives the second stepper motor 9 to rotate by the second pulsqe distributor 18, friction roller 2 is driven to decline from upper limit device 15 place by the first gear 10, synchromesh gear belt 11, second gear 12, screw mandrel 13, spiral shell block 14, first clips 4 weight is loaded on hook 3 lentamente, computing machine 19 receives and the load signal linking up with the force snesor 7 and amplifier 8 be connected, load-time curve is shown on an output device during Real-time, to setting-up time or after arriving lower limiter 16 position, friction roller 2 stopping declines and rises to initial position;
C computing machine 19 automatic analysis load-time curve, obtains the friction force of fiber samples 1, calculates frictional coefficient of fiber according to Euler's formula.
Fig. 2 is apparatus of the present invention casing and guidance panel, and its effect is convenient to control test, and the electrical equipment in protective device also ensures test environment.
Be only preferred embodiment of the present invention in sum, be not used for limiting practical range of the present invention.Namely all equivalences done according to the content of the present patent application the scope of the claims change and modify, and all should be technology category of the present invention.
Claims (5)
1. a frictional coefficient of fiber proving installation, is characterized in that: it comprises friction roller (2), hook (3), the first clips (4), the second clips (5), the first stepper motor (6), force snesor (7), amplifier (8), the first pulsqe distributor (17), computing machine (19) and input-output device thereof; Wherein: this friction roller (2) hangs with the sample (1) in angle of contact; This first clips (4) clamps sample (1) one end, and this first clips (4) is connected with force snesor (7) by hook (3); The force value resolution 0.25 × 10 of this force snesor (7)
-3below cN, force measurement scope 1000 × 10
-3more than cN; This force snesor (7) is connected with computing machine (19) further by amplifier (8); This second clips (4) is clamped sample (1) other end and is made the second clips (4) freely hang over friction roller (2) another side; The first stepper motor (6) that this friction roller (2) is controlled by the first pulsqe distributor (17) by computing machine (19) drives rotation.
2. frictional coefficient of fiber proving installation according to claim 1, is characterized in that: this device comprises the second stepper motor (9), the first gear (10), synchromesh gear belt (11), the second gear (12), screw mandrel (13), spiral shell block (14), upper limiter (15), lower limiter (16), the second pulsqe distributor (18) further; Wherein: this screw mandrel (13) is erect and arranged and arrange spiral shell block (14) on screw mandrel (13), and this spiral shell block (14) connects friction roller (2); This screw mandrel (13) one end connects the drive mechanism be made up of the first gear (10), synchromesh gear belt (11), the second gear (12), and the second stepper motor (9) that this drive mechanism is controlled by the second pulsqe distributor (18) by computing machine (19) connects driving; The up and down path of this spiral shell block (14) has upper limiter (15) and lower limiter (16) respectively.
3. frictional coefficient of fiber proving installation according to claim 1 and 2, is characterized in that: this input-output device is display (20) and/or printer (21).
4. a frictional coefficient of fiber method of testing, is characterized in that: it adopts proving installation as claimed in claim 1, and concrete steps comprise:
A first clips (4) and the second clips (5) clamp the two ends of sample (1), again sample (1) is hung on friction roller (2), first clips (4) hangs on hook (3), second clips (5) freely hangs over friction roller (2) another side, now, ride sample (1) two ends hanging over (2) on friction roller and be subject to equal tension effect;
B carries out friction roller and rotates test fibre frictoin:
Computing machine (19) drives the first stepper motor (6) to drive friction roller (2) to rotate by the first pulsqe distributor (17), because rubbing action friction roller (2) drives sample (1) mobile on friction roller surface, first clips (4) weight is loaded on hook (3) lentamente, computing machine (19) receives and the load signal linking up with force snesor (7) that (3) be connected and amplifier (8), show load-time curve in real time on an output device, after setting-up time, friction roller (2) stops operating;
C computing machine (19) automatic analysis load-time curve, obtains the friction force of fiber samples (1), calculates frictional coefficient of fiber according to Euler's formula.
5. a frictional coefficient of fiber method of testing, is characterized in that: it adopts proving installation as claimed in claim 2, and concrete steps comprise:
A first clips (4) and the second clips (5) clamp the two ends of sample (1), again sample (1) is hung on friction roller (2), first clips (4) hangs on hook (3), second clips (5) freely hangs over friction roller (2) another side, now, ride sample (1) two ends hanging over (2) on friction roller and be subject to equal tension effect;
B1 carries out friction roller lifting test fibre frictoin:
Computing machine (19) drives the second stepper motor (9) to rotate by the second pulsqe distributor (18), by the first gear (10), synchromesh gear belt (11), second gear (12), screw mandrel (13), spiral shell block (14) drives friction roller (2) to decline from upper limit device (15) place, first clips (4) weight is loaded on hook (3) lentamente, computing machine (19) receives and the load signal linking up with force snesor (7) and the amplifier (8) be connected, load-time curve is shown on an output device during Real-time, to setting-up time or after arriving lower limiter (16) position, friction roller (2) stops declining and rising to initial position,
C computing machine (19) automatic analysis load-time curve, obtains the friction force of fiber samples (1), calculates frictional coefficient of fiber according to Euler's formula.
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| CN201510315562.XA CN104849208B (en) | 2015-06-10 | 2015-06-10 | A kind of frictional coefficient of fiber test device and its method of testing |
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| CN104849208B CN104849208B (en) | 2017-09-05 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910982A (en) * | 2016-06-24 | 2016-08-31 | 中国矿业大学 | Method for measuring friction coefficient of friction liner of hoister based on arc-surface method |
| CN106092797A (en) * | 2016-07-29 | 2016-11-09 | 中国石化仪征化纤有限责任公司 | Monofilament method chopped fiber wear resistance testing device |
| CN106442310A (en) * | 2016-09-30 | 2017-02-22 | 天津工业大学 | Filament and yarn friction coefficient tester |
| CN107727743A (en) * | 2017-10-30 | 2018-02-23 | 上海凯历迪新材料科技股份有限公司 | A kind of dynamic fiber degree of orientation measuring instrument and the method for measuring the dynamic fiber degree of orientation |
| CN108680498A (en) * | 2018-08-10 | 2018-10-19 | 江苏恒神股份有限公司 | A kind of carbon fiber friction coefficient testing device and method |
| CN109313174A (en) * | 2016-06-22 | 2019-02-05 | 般财团法人化检检验机构 | Frictional force measuring device depending on embracing water and the method for measuring force of friction depending on embracing water |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109313174A (en) * | 2016-06-22 | 2019-02-05 | 般财团法人化检检验机构 | Frictional force measuring device depending on embracing water and the method for measuring force of friction depending on embracing water |
| CN109313174B (en) * | 2016-06-22 | 2021-12-07 | 一般财团法人化检检验机构 | Friction force measuring device depending on water holding amount and friction force measuring method depending on water holding amount |
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| CN108680498A (en) * | 2018-08-10 | 2018-10-19 | 江苏恒神股份有限公司 | A kind of carbon fiber friction coefficient testing device and method |
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| CN104849208B (en) | 2017-09-05 |
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