CN214749903U - Yarn heat shrinkage rate testing arrangement - Google Patents
Yarn heat shrinkage rate testing arrangement Download PDFInfo
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- CN214749903U CN214749903U CN202022497039.2U CN202022497039U CN214749903U CN 214749903 U CN214749903 U CN 214749903U CN 202022497039 U CN202022497039 U CN 202022497039U CN 214749903 U CN214749903 U CN 214749903U
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- yarn
- frame
- strain gauge
- resistance strain
- reel
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- 238000012360 testing method Methods 0.000 title claims abstract description 47
- 238000004804 winding Methods 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 229920003235 aromatic polyamide Polymers 0.000 description 16
- 239000004760 aramid Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 2
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a yarn thermal shrinkage percentage testing arrangement, this yarn thermal shrinkage percentage testing arrangement includes: a wire twisting frame; the yarn frame mechanism is rotatably connected to the skein frame and used for winding yarns, and one end of each yarn is connected with the skein frame; the resistance strain gauge is arranged on the skein frame, is connected with the other end of the yarn and is used for testing the change value of the length of the yarn along with the temperature; the precision of the resistance strain gauge is 10‑6Strain; an automatic length measuring instrument connected to the reel mechanism for measuring the initial length of the yarnAnd (4) degree. The yarn thermal shrinkage rate testing device is simple in structure and convenient to operate, and is provided with the resistance strain gauge, so that the thermal shrinkage rate value can be quickly and accurately measured.
Description
Technical Field
The utility model relates to a thermal shrinkage percentage test equipment technical field, concretely relates to yarn thermal shrinkage percentage testing arrangement.
Background
The para-aramid yarn is applied to the cable industry all the time, especially the electric power cable, and according to the characteristics of the pyrocondensation cold expanding of para-aramid yarn, has very big influence to the performance of cable, how to detect out the thermal shrinkage factor of para-aramid yarn fast accurately, plays very important guiding meaning to the design of cable.
At present, in the conventional testing method using the oven and the graduated scale for measurement, the testing time is at least more than 3 hours, and the graduated scale is used for measuring the length, because the change condition is not very obvious, the error of reading data by naked eyes is too large, the calculation of the thermal shrinkage rate is very inaccurate, and the real condition is difficult to reflect.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a yarn thermal shrinkage percentage testing arrangement, this yarn thermal shrinkage percentage testing arrangement simple structure, the operation of being convenient for to be equipped with the resistance strain gauge, can be fast and accurate record thermal shrinkage percentage value, with the long and lower technical problem of accuracy of test time who solves the thermal shrinkage percentage among the prior art.
In order to realize the purpose, the utility model provides a yarn thermal shrinkage percentage testing arrangement.
This yarn heat shrinkage testing arrangement includes:
a wire twisting frame;
the yarn frame mechanism is rotatably connected to the skein frame and used for winding yarns, and one end of each yarn is connected with the skein frame;
the resistance strain gauge is arranged on the skein frame, is connected with the other end of the yarn and is used for testing the change value of the length of the yarn along with the temperature; the precision of the resistance strain gauge is 10-6Strain;
and the automatic length measuring instrument is connected to the reel mechanism and used for testing the initial length of the yarn.
Furthermore, the skein frame comprises an upper skein frame and a lower skein frame which are oppositely arranged, the reel mechanism is rotatably connected between the upper skein frame and the lower skein frame, and one end of the yarn is connected with the upper skein frame.
Further, the reel mechanism includes:
the yarn frame is rotatably connected between the upper skein frame and the lower skein frame, and the yarn is wound on the outer side surface of the yarn frame;
the reciprocating guide wire structure is arranged above the resistance strain gauge, and the other end of the yarn is connected with the resistance strain gauge through the reciprocating guide wire structure;
the speed regulator is arranged on the reel and used for regulating the rotating speed of the reel;
and the number-of-turns counter is arranged on the yarn frame and used for counting the number of winding turns of the yarn.
Further, the resistance strain gauge is a medium-temperature strain gauge, and the working temperature of the resistance strain gauge is 60-350 ℃.
Further, the resistance strain gauge is a normal-temperature strain gauge, and the working temperature of the resistance strain gauge is-30-60 ℃.
Further, the device also comprises an upper bracket and a lower bracket;
the upper end of the yarn frame is connected to the upper twisting frame through the upper bracket;
the lower end of the reel is connected to the lower wire twisting frame through the lower support.
Further, the device also comprises a first tension clamp and a second tension clamp;
one end of the yarn is connected to the upper skein frame through the first tension clamp;
the other end of the yarn is connected to the resistance strain gauge through the second tension clamp.
Furthermore, the tension adjusting mechanism is arranged on the lower wire twisting frame and is positioned between the reel mechanism and the lower wire twisting frame.
Further, the resistance strain gauge is connected to the tension adjusting structure.
The utility model has the advantages that:
(1) the device for testing the heat shrinkage rate of the yarns has simple structure, can be integrally placed in the temperature control box for testing, and is convenient to operate;
(2) the utility model discloses well resistance strain gauge's high accuracy can obtain the thermal shrinkage factor of accurate counterpoint aramid yarn fast in 1h, and its test accuracy can reach 10-4The mm magnitude is more than, and compared with the conventional precision improved by 10000 times;
(3) the utility model provides a device can also test conventional yarn, like the polyester yarn, block water the heat shrinkage factor of yarn, carries out comparative analysis to the heat shrinkage factor of various materials in the cable, has very high design reference value.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is the structure diagram of the device for testing the thermal shrinkage rate of yarn in the embodiment of the present invention.
In the figure:
1. winding a wire frame; 2. a lower wire twisting frame; 3. a reel; 4. a tension adjustment structure; 5. a resistance strain gauge; 6. an automatic length measuring instrument; 7. an upper bracket; 8. a lower bracket; 9. a first tension clamp; 10. a second tension clamp; 11. para-aramid yarn; 12. a reciprocating wire guide structure; 13. a speed regulator; 14. and a number of turns counter.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The utility model discloses a yarn thermal shrinkage testing arrangement, this yarn thermal shrinkage testing arrangement mainly include hank silk frame, reel mechanism, resistance strain gauge 5 and automatic length measuring appearance 6. As shown in figure 1, a reel mechanism is connected on a skein frame, an electric resistance strain gauge 5 is arranged on the skein frame and is mainly used for testing the change value of the length of yarn (such as para-aramid yarn 11) along with temperature, and the precision of the electric resistance strain gauge 5 is 10-6Strain; the automatic length measuring instrument 6 is used for testing the initial length of the para-aramid yarn 11; the reel mechanism is used for winding the para-aramid yarn 11 to form a support for the para-aramid yarn 11, and the two ends of the para-aramid yarn 11 are respectively connected with the skein frame and the resistance strain gauge 5. The testing device is simple in structure, can be integrally placed in a high-temperature box for testing, improves the convenience and accuracy of testing, and can quickly obtain the accurate thermal shrinkage rate of the para-aramid yarns due to the high precision of the resistance strain gauge 5.
As another embodiment of the present invention, the skein frame includes an upper skein frame 1 and a lower skein frame 2 which are arranged relatively, as shown in fig. 1, the reel mechanism is rotatably connected between the upper skein frame 1 and the lower skein frame 2, and the upper skein frame 1 is connected to one end of the yarn.
As another embodiment of the present invention, the reel mechanism includes a reel 3, a reciprocating yarn guiding structure 12, a speed regulator 13 and a number-of-turns counter 14, as shown in fig. 1, the reel 3 is rotatably connected between an upper skein frame 1 and a lower skein frame 2, and the yarn is wound on the outer side surface of the reel 3; the reciprocating wire guiding structure 12 is arranged above the resistance strain gauge 5, and the other end of the yarn is connected with the resistance strain gauge 5 through the reciprocating wire guiding structure 12; the speed regulator 13 is arranged on the reel 3 and is used for regulating the rotating speed of the reel 3; the number of turns counter 14 is arranged on the reel 3 and is mainly used for counting the number of winding turns of the yarn.
As another embodiment of the utility model, resistance strain gauge 5 is the medium temperature strainometer, and the operating temperature of medium temperature strainometer is 60 ~ 350 ℃.
As another embodiment of the utility model, the resistance strain gauge 5 is a normal temperature strain gauge, and the working temperature of the normal temperature strain gauge is-30 to 60 ℃.
As another embodiment of the utility model, testing arrangement still includes upper bracket 7, lower carriage 8, as shown in fig. 1, and the upper end of reel 3 is connected on last hank silk frame 1 through upper bracket 7, and the lower extreme of reel 3 is connected on hank silk frame 2 down through lower carriage 8, improves overall structure's steadiness.
As another embodiment of the utility model, testing arrangement still includes first tension clamp 9 and second tension clamp 10, as shown in fig. 1, and the one end of counterpoint aramid yarn 11 is connected on last hank silk frame 1 through first tension clamp 9, and the other end of counterpoint aramid yarn 11 passes through second tension clamp 10 to be connected on resistance strain gauge 5, and the setting of first tension clamp 9 and second tension clamp 10 provides the stability of connecting.
As another embodiment of the present invention, the testing device further includes a tension adjusting structure 4, as shown in fig. 1, the tension adjusting structure 4 is connected to the lower skein frame 2 and is located between the reel mechanism and the lower skein frame 2.
As another embodiment of the present invention, the resistance strain gauge 5 is provided on the tension adjusting structure 4, as shown in fig. 1.
The utility model also discloses a thermal shrinkage rate test method, this test method is based on foretell yarn thermal shrinkage rate testing arrangement. The method for testing thermal shrinkage rate according to the present invention will be described in detail with reference to the following examples.
Example 1:
and adjusting a tension adjusting structure in the yarn thermal shrinkage testing device to enable the tension value to be 2.5cN, and measuring the initial length of the para-aramid yarn to be 1.000m by an automatic length measuring instrument.
Then the whole testing device is placed in a high-temperature box, heated to 60 ℃ and kept for 30 min.
And finally, reading the change value of the resistance strain gauge, and calculating to obtain that the thermal shrinkage rate of the para-aramid yarn at the temperature is 99.91%.
It can also be seen from embodiment 1 that the testing device can be used for rapidly obtaining the accurate thermal shrinkage rate of the para-aramid yarn, and the testing precision reaches one ten thousandth.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A yarn heat shrinkage testing device is characterized by comprising:
the wire twisting frame comprises an upper wire twisting frame (1) and a lower wire twisting frame (2) which are oppositely arranged;
the yarn frame mechanism is rotatably connected between the upper skein frame (1) and the lower skein frame (2) and used for winding yarns, and one end of each yarn is connected with the upper skein frame (1);
a resistance strain gauge (5) disposed on the skein frame, the resistance strain gauge (5) being connected to the other end of the yarnThe device is used for testing the change value of the length of the yarn along with the temperature; the precision of the resistance strain gauge (5) is 10-6Strain;
the automatic length measuring instrument (6) is connected to the reel mechanism and used for testing the initial length of the yarn;
the reel mechanism includes:
the yarn frame (3) is rotatably connected between the upper skein frame (1) and the lower skein frame (2), and yarns are wound on the outer side surface of the yarn frame (3);
a reciprocating wire guide structure (12) which is arranged above the resistance strain gauge (5), and the other end of the yarn is connected with the resistance strain gauge (5) through the reciprocating wire guide structure (12);
the speed regulator (13) is arranged on the reel (3) and is used for regulating the rotating speed of the reel (3);
and the number-of-turns counter (14) is arranged on the reel (3) and is used for counting the number of winding turns of the yarn.
2. The yarn heat shrinkage testing device according to claim 1, characterized in that the resistance strain gauge (5) is a medium temperature strain gauge, and the working temperature of the resistance strain gauge (5) is 60-350 ℃.
3. The yarn heat shrinkage testing device according to claim 1, wherein the electric resistance strain gauge (5) is a normal temperature strain gauge, and the working temperature of the electric resistance strain gauge (5) is-30-60 ℃.
4. Yarn heat shrinkage test device according to claim 1, characterized in that it further comprises an upper bracket (7) and a lower bracket (8);
the upper end of the reel (3) is connected to the upper wire twisting frame (1) through the upper bracket (7);
the lower end of the reel (3) is connected to the lower wire twisting frame (2) through the lower support (8).
5. Yarn heat shrinkage test device according to claim 1, characterized in that it further comprises a first tension clamp (9) and a second tension clamp (10);
one end of the yarn is connected to the upper skein frame (1) through the first tension clamp (9);
the other end of the yarn is connected to the resistance strain gauge (5) through the second tension clamp (10).
6. The yarn heat shrinkage testing device according to claim 1, characterized by further comprising a tension adjusting structure (4), wherein the tension adjusting structure (4) is arranged on the lower skein frame (2) and is located between the reel mechanism and the lower skein frame (2).
7. Yarn heat shrinkage test device according to claim 6, characterized in that the electrical resistance strain gauge (5) is attached to the tensioning structure (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022497039.2U CN214749903U (en) | 2020-11-02 | 2020-11-02 | Yarn heat shrinkage rate testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022497039.2U CN214749903U (en) | 2020-11-02 | 2020-11-02 | Yarn heat shrinkage rate testing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214749903U true CN214749903U (en) | 2021-11-16 |
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|---|---|---|---|
| CN202022497039.2U Expired - Fee Related CN214749903U (en) | 2020-11-02 | 2020-11-02 | Yarn heat shrinkage rate testing arrangement |
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| CN (1) | CN214749903U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505089A (en) * | 2020-11-02 | 2021-03-16 | 通鼎互联信息股份有限公司 | Yarn thermal shrinkage testing device and testing method |
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2020
- 2020-11-02 CN CN202022497039.2U patent/CN214749903U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505089A (en) * | 2020-11-02 | 2021-03-16 | 通鼎互联信息股份有限公司 | Yarn thermal shrinkage testing device and testing method |
| CN112505089B (en) * | 2020-11-02 | 2024-05-10 | 通鼎互联信息股份有限公司 | Yarn thermal shrinkage rate testing device and testing method |
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Granted publication date: 20211116 |