CN114354605A - Method and equipment for testing and measuring twist of elastic bunchy yarn - Google Patents
Method and equipment for testing and measuring twist of elastic bunchy yarn Download PDFInfo
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- CN114354605A CN114354605A CN202210046287.6A CN202210046287A CN114354605A CN 114354605 A CN114354605 A CN 114354605A CN 202210046287 A CN202210046287 A CN 202210046287A CN 114354605 A CN114354605 A CN 114354605A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000012360 testing method Methods 0.000 title claims abstract description 26
- 238000004804 winding Methods 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 6
- 230000003750 conditioning effect Effects 0.000 claims 2
- 238000005259 measurement Methods 0.000 abstract description 13
- 238000000691 measurement method Methods 0.000 abstract description 2
- 238000010998 test method Methods 0.000 abstract description 2
- 238000011156 evaluation Methods 0.000 abstract 1
- 239000004744 fabric Substances 0.000 abstract 1
- 239000000835 fiber Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 235000013351 cheese Nutrition 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N2021/8444—Fibrous material
Abstract
The invention discloses a twist test and measurement method and equipment of elastic slub yarn. Based on the method, the problem that the traditional twist measuring method can only measure the average value of the twist of the elastic slub yarn is solved. The equipment comprises an automatic tension adjusting reeling machine and a measuring device; the automatic tension adjusting reeling machine is provided with two yarn feeders, a tension adjuster, a force measuring sensor, a calibration blackboard and a reduction gearbox; the measuring device comprises an adjusting sliding seat, a blackboard clamping channel, a video microscope lens and a video microscope display screen. The method can test the twist and the change of the twist rule of each part of the elastic bunchy yarn under different tensions, standardizes the related standards of the twist parameter measurement of the elastic bunchy yarn, provides basis for the mechanical property evaluation of the elastic bunchy yarn and the fabric forming test, and has the advantages of simple steps and time and cost saving.
Description
Technical Field
The invention relates to a twist test and measurement method and equipment for elastic bunchy yarn.
Background
The stretch slub yarn is made by taking stretch yarn as core yarn and coating one or more fibers. Twist is an important index for expressing the structure of the yarn, the torsion force among the yarns is unbalanced due to overfeed of the elastic bunchy yarn, in order to balance applied pressure and stabilize the shape of the elastic yarn, the transverse twist of the elastic bunchy yarn can generate a slippage phenomenon, the twist transmission causes the partial twist of the base yarn to be larger, and the twist distribution of the bunchy yarn and the base yarn is not uniform.
At present, the traditional yarn twist measuring method comprises a direct counting method and a untwisting and twisting method, and is suitable for filaments, short fibers and folded yarns. The tracing twisting method for fibre is suitable for slub yarn. However, the measurement for stretch slub yarn has the following disadvantages:
(1) the elastic bunchy yarn has resilience, the pre-tension is larger than that of the common yarn in order to straighten the yarn without extending, and the tension value cannot be automatically adjusted and controlled;
(2) in the direct counting method measuring process, the untwisting is stopped when the untwisting reaches the set twist number, the untwisting needs to be completely manually operated, the twisting force exists in the untwisting process of the elastic slub yarn to balance the external pressure of the yarn, the elastic yarn can be finally unwound to be parallel to the yarn, but the twist is an average value, and the slub, transition and base yarn section twist cannot be distinguished;
(3) the measured twist number of the untwisting and twisting method is larger than the actual twist number and is an average value, and the twist numbers of the slub, the transition and the base yarn sections cannot be distinguished;
(4) the fiber tracing and twisting method is long in process and is limited to AB color spun slub yarn.
Disclosure of Invention
In order to solve the technical problems, the invention provides a twist test measuring method and a twist test measuring device for elastic bunchy yarns, which have simple structure and convenient operation and can be used for testing the twist test of each part of the elastic bunchy yarns; it can also measure the twist rule change of the elastic bunchy yarn under the automatic tension regulator.
The technical scheme adopted by the invention is as follows: a twist testing device for elastic slub yarn comprises an automatic tension adjusting reeling machine and a measuring device; the automatic tension adjusting reeling machine is provided with two yarn guides, a tension adjuster, a calibration blackboard and a reduction box; the tension regulator is positioned between the two yarn guides, the two yarn guides are respectively provided with a force measuring sensor, and the tension regulator is provided with a tension measuring sensor; the calibration blackboard is arranged on the blackboard support, and the reduction gearbox is connected with the calibration blackboard and used for driving the calibration blackboard to rotate; the calibration blackboard is provided with a millimeter scale; the measuring device comprises an adjusting sliding seat, a blackboard clamping channel and a video microscope lens, the blackboard clamping channel is installed on the adjusting sliding seat, the adjusting sliding seat is used for adjusting the position of the blackboard clamping channel, the blackboard clamping channel is located under the video microscope lens, and the video microscope lens is electrically connected with the video microscope display screen.
In the twist testing equipment for the elastic bunchy yarn, the adjusting slide seat comprises an installation seat and a slide seat, a slide groove I is arranged on the installation seat, a knob hole I is arranged on the side wall of the slide groove I, a knob I is arranged in the knob hole, a gear I is arranged at the inner end of the knob I, a slide block I is arranged at the bottom of the slide seat and is arranged in the slide groove I, a rack I is arranged at the bottom of the slide block I, and the rack I is meshed with the gear I; the blackboard eraser is characterized in that a sliding groove II is formed in the sliding seat, the sliding groove II is perpendicular to the sliding groove I, a knob hole II is formed in the side wall of the sliding groove II, a knob II is arranged in the knob hole, a gear II is arranged at the inner end of the knob II, a sliding block II is arranged at the bottom of a blackboard clamping channel, the sliding block II is arranged in the sliding groove II, a rack II is arranged at the bottom of the sliding block II, and the rack II is meshed with the gear II.
In the twist testing equipment for the elastic bunchy yarn, the knobs I and II are micrometer knobs.
The twist testing equipment for the elastic bunchy yarn further comprises a base, wherein the yarn guide, the tension adjuster, the blackboard support, the adjusting sliding seat, the video microscope lens and the video microscope display screen are arranged on the base.
In the twist testing equipment for the elastic bunchy yarn, the tension regulator comprises a force measurement yarn guide wheel, a swinging guide rod and a tension regulator base, wherein the swinging guide rod is arranged on the tension regulator base through a bearing, and the yarn guide wheel is arranged at the cantilever end of the swinging guide rod; the tension regulator base is arranged on the machine base.
A twist test measuring method of elastic bunchy yarn by using the twist test equipment of the elastic bunchy yarn comprises the following steps:
1) preparing a sample, and humidifying the sample;
2) determining parameters of an automatic tension adjusting reeling machine: the blackboard specification is 250 multiplied by 220 mm; the yarn reeling speed adjusting range is 10-400 r/mm; a plurality of yarns are distributed on the long blackboard at the yarn winding distance per centimeter; the pre-tension value is set and adjusted to be half of the number of the elastic yarns;
3) placing a sample on a yarn pipe shaft, drawing a yarn end of the sample to be fixed on a calibration blackboard through a yarn guide, a tension device and the yarn guide; driving the calibration blackboard to rotate and wind the yarns;
4) after the yarn winding is finished, taking down the calibration blackboard, fixing the calibration blackboard on a blackboard clamping passage, and adjusting the objective lens multiple until the object image is clear and the yarn is inclined; calibrating and comparing the display value after the magnification in the display screen with the value of the millimeter scale on the actual blackboard, wherein the difference between the display value and the value is less than 0.1mm, the magnification of the selected objective lens is accurate, and the measured data can be used;
5) measuring twist angles and diameters of slubs, transition sections and base yarns of the sample;
6) after the twist angle and the diameter of the elastic slub yarn are obtained, the corresponding partial twist of the slub yarn and the base yarn is obtained through calculation by the following formula;
in the formula: beta is a lay angle; d is the diameter, mm; h is the lay length, mm, h =100/T, T is the twist, twist/10 cm.
In the twist testing and measuring method of the elastic slub yarn, when the sample is subjected to humidity adjustment in the step 1), the sample is subjected to humidity adjustment for 24 hours under the standard atmosphere specified in GB/T6529.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention can test the twist of the elastic slub yarn under different tensions, and is used for analyzing the change of the twist rule of the elastic slub yarn along with the tension change, and the influence of the twist distribution rule and the twist distribution of the elastic slub yarn on the strength.
2. The method realizes the measurement of the twist of the elastic slub yarn, and has simple steps and saves time and cost.
3. The blackboard is calibrated by the video microscope, so that the measurement is integrated, and the measurement data is more accurate and reliable.
4. The adjusting sliding seat can realize accurate feeding of a blackboard card channel, control twist angle and diameter measurement of the elastic bunchy yarn, the transition section and the base yarn, and facilitate the integrity of twist measurement of the whole yarn, and is used for style analysis of the elastic bunchy yarn.
Drawings
FIG. 1 is a schematic view of the twist testing equipment of the elastic slub yarn of the invention.
Fig. 2 is a perspective view of an automatic tension regulator of the present invention.
Fig. 3 is a schematic plan view of a video microscope calibration blackboard of the present invention.
Figure 4 is a perspective view of the adjustment carriage of the present invention.
Figure 5 is a front view of the adjustment carriage of the present invention.
FIG. 6 is a schematic diagram of the formula conversion of the twist of the stretch slub yarn.
In the figure: the yarn tension adjusting device comprises a bobbin 1, a yarn guide 2, a tension adjuster 3, a yarn guide 4, a yarn guide force measuring sensor 5, a tension measuring sensor 6, a force measuring sensor 7, a calibration blackboard 8, a video microscope lens 9, an adjusting slide seat 10, a video microscope display screen 11, a reduction gearbox 12, a force measuring yarn guide wheel 31, a swing guide rod 32, a tension adjuster base 33, a yarn winding clamping opening 81, a millimeter scale 82, a blackboard clamping channel 101, a knob I102, a sliding groove II 103 and a knob II 104.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1-5, the present invention includes a frame, an automatic tension adjusting reeling machine and a measuring device. The automatic tension adjusting reeling machine comprises a yarn guide 2, a yarn guide 4, a tension adjuster 3, a calibration blackboard 8 and a reduction gearbox 12; the tension regulator 3 is positioned between the two yarn guides 2, the yarn guides 2 and the yarn guides 4 are respectively provided with a force measuring sensor 5 and a force measuring sensor 7, and the tension regulator 3 is provided with a tension measuring sensor 6. The tension regulator 3 comprises a force measurement yarn guide wheel 31, a swinging guide rod 32 and a tension regulator base 33, wherein the swinging guide rod 32 is arranged on the tension regulator base 33 through a bearing, and the yarn guide wheel 31 is arranged at the cantilever end of the swinging guide rod 32; the tension regulator base 33 is mounted on the machine base. The yarn pre-tension is determined by the force sensor, when the yarn passes through the yarn guide wheel 31, the tension value exceeds the pre-tension or is lower than the pre-tension, the tension can be preliminarily judged according to the left-right swinging degree of the swinging guide rod 32, and the specific force value is displayed by referring to the tension measuring sensor 6.
The calibration blackboard 8 is arranged on the blackboard support, and the reduction gearbox 12 is arranged on the blackboard support, is connected with the calibration blackboard 8 and is used for driving the calibration blackboard 8 to rotate. The calibration blackboard 8 is provided with a millimeter scale 82; the measuring device comprises an adjusting slide seat 10, a blackboard card channel 101 and a video microscope lens 9, wherein the blackboard card channel 101 is installed on the adjusting slide seat 10, the adjusting slide seat 10 is used for adjusting the position of the blackboard card channel 101, the blackboard card channel 101 is located under the video microscope lens 9, and the video microscope lens 9 is electrically connected with a video microscope display screen 11. The yarn guide 2, the blackboard support, the adjusting slide seat 10, the video microscope lens 9 and the video microscope display screen 11 are arranged on the base.
The adjusting slide seat 10 comprises a mounting seat and a slide seat, a slide groove I105 is arranged on the mounting seat, a knob hole I is arranged on the side wall of the slide groove I105, a knob I102 is arranged in the knob hole, a gear I is arranged at the inner end of the knob I102, a slide block I is arranged at the bottom of the slide seat and is arranged in the slide groove I, a rack I is arranged at the bottom of the slide block I, and the rack I is meshed with the gear I. The blackboard eraser is characterized in that a sliding groove II is formed in the sliding seat, the sliding groove II is perpendicular to the sliding groove I, a knob hole II is formed in the side wall of the sliding groove II, a knob II 104 is arranged in the knob hole, a gear II is arranged at the inner end of the knob II, a sliding block II 103 is arranged at the bottom of a blackboard clamping channel, the sliding block II is arranged in the sliding groove II, a rack II is arranged at the bottom of the sliding block II, and the rack II is meshed with the gear II. The knob I and the knob II adopt micrometer knobs.
The invention relates to a method for testing dynamic fracture strength of simulated yarns, which comprises the following steps:
1) preparing a sample, and humidifying the sample; when the humidity of the sample is controlled, the humidity of the sample is controlled for 24 hours under the standard atmosphere specified in GB/T6529.
2) Determining parameters of an automatic tension adjusting reeling machine: the blackboard specification is 250 multiplied by 220 mm; the yarn reeling speed adjusting range is 10-400 r/mm; a plurality of yarns are distributed on the long blackboard at the yarn winding distance per centimeter; the pre-tension value is set and adjusted to be half of the number of the elastic yarns;
1) placing a sample on a yarn pipe shaft 1, drawing the yarn end of the sample to pass through a yarn guide 2, a force measurement yarn guide wheel 3 and a yarn guide 4, and finally fixing the sample at a yarn clamping opening 81 of a calibration blackboard 8; driving the calibration blackboard 8 to wind yarn;
2) after the yarn winding is completed, taking down the calibration blackboard 8, fixing the calibration blackboard 8 on a blackboard clamping channel 101, adjusting the objective lens magnification until the object image is clear and the yarn is oblique, calibrating and comparing the display value after the magnification in the display screen with the actual value of the millimeter scale on the blackboard, wherein the difference between the two is less than 0.1mm, the magnification of the selected objective lens is accurate, and the measured data can be used;
3) adjusting a knob I102 and a knob II 104, and measuring the twist angle and the diameter of the slub, the transition section and the base yarn of the sample;
4) equation of the law
And calculating the twist of each part.
Randomly selecting the elastic bunchy yarn 16 according to the operation stepss-40D cheese twist measurement of stretch slub yarn, cheese actual twist 72 twist (10 cm)－1Measured data such as tables1；
The same bobbin yarn was directly counted on a digital yarn twist machine Y3331LN to obtain 20 sets of data with an average twist of 72.145 twists (10 cm) as shown in Table 2－1；
30 sets of data are obtained by untwisting and twisting method as shown in Table 3, the average twist is 76.84 twist (10 cm)－1；
The twist measured by the direct counting method is similar to the set twist through data, the twist distribution of the slub and the base yarn is uneven due to the twist transmission of the elastic slub yarn, and the direct counting method can also balance the external pressure during untwisting, so that the transverse twist can slip, and the untwisting number is the twist in the length of the yarn sample until the single yarn and the elastic yarn are completely parallel. The untwisting and twisting method is larger than the method for measuring the twist of the elastic slub yarn, and the untwisting and twisting are carried out reversely, so that the number of twist turns is recovered to the initial length, and the elastic yarn becomes an uncontrollable factor during twisting. The experimental data of the steps can be analyzed by the principle.
Table 116 s-40D elastic slub yarn measurement data
Data measured by direct untwisting method in table 216 s-40D
TABLE 316 s-40D untwisting and twisting method measurement data
Claims (7)
1. A twist test device of elastic bunchy yarn is characterized in that: comprises an automatic tension adjusting reeling machine and a measuring device; the automatic tension adjusting reeling machine is provided with two yarn guides, a tension adjuster, a calibration blackboard and a reduction box; the tension regulator is positioned between the two yarn guides, the two yarn guides are respectively provided with a force measuring sensor, and the tension regulator is provided with a tension measuring sensor; the calibration blackboard is arranged on the blackboard support, and the reduction gearbox is connected with the calibration blackboard and used for driving the calibration blackboard to rotate; the calibration blackboard is provided with a millimeter scale; the measuring device comprises an adjusting sliding seat, a blackboard clamping channel and a video microscope lens, the blackboard clamping channel is installed on the adjusting sliding seat, the adjusting sliding seat is used for adjusting the position of the blackboard clamping channel, the blackboard clamping channel is located under the video microscope lens, and the video microscope lens is electrically connected with the video microscope display screen.
2. The twist testing apparatus of elastic slub yarn according to claim 1, wherein: the adjusting sliding seat comprises a mounting seat and a sliding seat, a sliding groove I is formed in the mounting seat, a knob hole I is formed in the side wall of the sliding groove I, a knob I is arranged in the knob hole, a gear I is arranged at the inner end of the knob I, a sliding block I is arranged at the bottom of the sliding seat and is arranged in the sliding groove I, a rack I is arranged at the bottom of the sliding block I, and the rack I is meshed with the gear I; the blackboard eraser is characterized in that a sliding groove II is formed in the sliding seat, the sliding groove II is perpendicular to the sliding groove I, a knob hole II is formed in the side wall of the sliding groove II, a knob II is arranged in the knob hole, a gear II is arranged at the inner end of the knob II, a sliding block II is arranged at the bottom of a blackboard clamping channel, the sliding block II is arranged in the sliding groove II, a rack II is arranged at the bottom of the sliding block II, and the rack II is meshed with the gear II.
3. The twist testing apparatus of the elastic slub yarn according to claim 2, wherein: the knob I and the knob II adopt micrometer knobs.
4. The twist testing apparatus of the elastic slub yarn according to claim 1, wherein: the yarn guide, the tension adjuster, the blackboard bracket, the adjusting slide seat, the video microscope lens and the video microscope display screen are arranged on the base.
5. The twist testing apparatus of the elastic slub yarn according to claim 1, wherein: the tension regulator comprises a force-measuring yarn guide wheel, a swinging guide rod and a tension regulator base, wherein the swinging guide rod is arranged on the tension regulator base through a bearing, and the yarn guide wheel is arranged at the cantilever end of the swinging guide rod; the tension regulator base is arranged on the machine base.
6. A twist test measuring method of an elastic slub yarn using the twist test apparatus of an elastic slub yarn according to any one of claims 1 to 5, comprising the steps of:
1) preparing a sample, and humidifying the sample;
2) determining parameters of an automatic tension adjusting reeling machine: the blackboard specification is 250 multiplied by 220 mm; the yarn reeling speed adjusting range is 10-400 r/mm; a plurality of yarns are distributed on the long blackboard at the yarn winding distance per centimeter; the pre-tension value is set and adjusted to be half of the number of the elastic yarns;
3) placing a sample on a yarn pipe shaft, drawing a yarn end of the sample to be fixed on a calibration blackboard through a yarn guide, a tension device and the yarn guide; driving the calibration blackboard to rotate and wind the yarns;
4) after the yarn winding is finished, taking down the calibration blackboard, fixing the calibration blackboard on a blackboard clamping passage, and adjusting the objective lens multiple until the object image is clear and the yarn is inclined; calibrating and comparing the display value after the magnification in the display screen with the value of the millimeter scale on the actual blackboard, wherein the difference between the display value and the value is less than 0.1mm, the magnification of the selected objective lens is accurate, and the measured data can be used;
5) measuring twist angles and diameters of slubs, transition sections and base yarns of the sample;
6) after the twist angle and the diameter of the sample are obtained, calculating by the following formula to obtain the corresponding partial twist of the slub and the base yarn;
in the formula: beta is the twist angle of the sample; d is the diameter of the sample, mm; h is the lay length of the sample, mm, h =100/T, and T is the twist, twist/10 cm.
7. The method for measuring the twist of the elastic slub yarn according to claim 6, wherein the sample is subjected to humidity conditioning for 24 hours under a standard atmosphere specified in GB/T6529 when the sample is subjected to humidity conditioning in step 1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210046287.6A CN114354605A (en) | 2022-01-17 | 2022-01-17 | Method and equipment for testing and measuring twist of elastic bunchy yarn |
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| CN202210046287.6A CN114354605A (en) | 2022-01-17 | 2022-01-17 | Method and equipment for testing and measuring twist of elastic bunchy yarn |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1202940A (en) * | 1995-10-06 | 1998-12-23 | 梅明格-Iro股份有限公司 | Thread feed device for elastic yarn |
| CN2742457Y (en) * | 2004-10-13 | 2005-11-23 | 林云才 | Movable work table for microscope |
| CN1974897A (en) * | 2006-10-27 | 2007-06-06 | 江南大学 | Method of measuring the twist angle between slub and base yarn of slub yarn |
| JP4505535B1 (en) * | 2009-03-19 | 2010-07-21 | 株式会社ミラック光学 | Manual stage |
| CN104264298A (en) * | 2014-09-09 | 2015-01-07 | 上海嘉麟杰纺织品股份有限公司 | Yarn length measuring instrument capable of simulating operation state of yarns on knitting machine |
| CN207557572U (en) * | 2017-12-23 | 2018-06-29 | 厦门市诺尔信生物科技有限公司 | A kind of portable microscope |
| CN210179233U (en) * | 2019-04-26 | 2020-03-24 | 成都领益科技有限公司 | Three-dimensional adjustable camera installing support |
| CN211577555U (en) * | 2020-04-13 | 2020-09-25 | 东莞市高工智能传动股份有限公司 | Horizontal adjustment module |
| CN113788364A (en) * | 2021-10-25 | 2021-12-14 | 无锡四强科技有限公司 | High-speed constant-tension monofilament dividing machine |
-
2022
- 2022-01-17 CN CN202210046287.6A patent/CN114354605A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1202940A (en) * | 1995-10-06 | 1998-12-23 | 梅明格-Iro股份有限公司 | Thread feed device for elastic yarn |
| CN2742457Y (en) * | 2004-10-13 | 2005-11-23 | 林云才 | Movable work table for microscope |
| CN1974897A (en) * | 2006-10-27 | 2007-06-06 | 江南大学 | Method of measuring the twist angle between slub and base yarn of slub yarn |
| JP4505535B1 (en) * | 2009-03-19 | 2010-07-21 | 株式会社ミラック光学 | Manual stage |
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| CN207557572U (en) * | 2017-12-23 | 2018-06-29 | 厦门市诺尔信生物科技有限公司 | A kind of portable microscope |
| CN210179233U (en) * | 2019-04-26 | 2020-03-24 | 成都领益科技有限公司 | Three-dimensional adjustable camera installing support |
| CN211577555U (en) * | 2020-04-13 | 2020-09-25 | 东莞市高工智能传动股份有限公司 | Horizontal adjustment module |
| CN113788364A (en) * | 2021-10-25 | 2021-12-14 | 无锡四强科技有限公司 | High-speed constant-tension monofilament dividing machine |
Non-Patent Citations (1)
| Title |
|---|
| 李玲珍: ""竹节纱捻度测试方法与分布规律的研究"", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》, no. 03, 15 March 2009 (2009-03-15), pages 3 * |
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