CN113430686A - Suspension type active false twisting winding device of ring spinning frame - Google Patents
Suspension type active false twisting winding device of ring spinning frame Download PDFInfo
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- CN113430686A CN113430686A CN202110779196.9A CN202110779196A CN113430686A CN 113430686 A CN113430686 A CN 113430686A CN 202110779196 A CN202110779196 A CN 202110779196A CN 113430686 A CN113430686 A CN 113430686A
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- guide groove
- spinning frame
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- 238000007378 ring spinning Methods 0.000 title claims abstract description 41
- 238000004804 winding Methods 0.000 title claims abstract description 37
- 239000000725 suspension Substances 0.000 title abstract description 16
- 230000005405 multipole Effects 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 28
- 239000010959 steel Substances 0.000 abstract description 28
- 238000009987 spinning Methods 0.000 abstract description 23
- 238000005516 engineering process Methods 0.000 abstract description 20
- 238000009434 installation Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 238000009826 distribution Methods 0.000 description 5
- 206010063385 Intellectualisation Diseases 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003831 antifriction material Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000007383 open-end spinning Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000007382 vortex spinning Methods 0.000 description 1
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Classifications
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H7/00—Spinning or twisting arrangements
- D01H7/92—Spinning or twisting arrangements for imparting transient twist, i.e. false twist
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
The invention discloses a suspension type active false twisting winding device of a ring spinning frame, which comprises a rotor, a stator supporting and mounting plate and an electromagnetic stator, wherein the electromagnetic stator is arranged on the stator supporting and mounting plate, and the rotor and the electromagnetic stator are coaxially arranged in a suspension manner through a magnetic field. The magnetic rings on the rotor and stator support mounting plates enable the rotor to suspend and center by the principle that homopolar magnetic fields repel each other, and non-entity contact type support is achieved; the invention realizes the driving and braking of the rotor by the motor principle, adopts the active steel collar technology, thoroughly cancels the steel wire ring used by the ring spinning, realizes the active, controllable and high-speed false twisting and winding of the ring spinning frame in the spinning process, thereby realizing the high-speed spinning.
Description
Technical Field
The invention belongs to the technical field of ring spinning frames, and particularly relates to a suspension type active false twisting winding device of a ring spinning frame.
Background
In the field of spinning, although there are new technologies with high yarn forming speed such as vortex spinning and rotor spinning, ring spinning is still the dominant technology for producing spun yarn due to its unique yarn forming style, large strength, wide spinning range and the like. With the development of the textile industry towards automation, intellectualization, high speed and low cost, the output speed of the ring spinning single spindle becomes the most important factor influencing the production efficiency.
Analyzing in principle, the ring spinning technology is invented, and the three processes of drafting, twisting and winding forming are carried out simultaneously to form spun yarns all the time; along with the reduction of scientific and technological development and technical application cost, the improvement of the drafting speed can be realized by increasing the rotating speed of the roller and the diameter of the roller to improve the output speed of the fiber bundle, and the twisting efficiency can be realized by the technologies of a high-speed spindle, a high-speed electric spindle and the like.
However, the winding formation is realized by the passive sliding of the traveller around the ring track under the dragging of the spun yarn, and the structure becomes the bottleneck of ring spinning speed increase under the high-speed spinning environment: with the increase of the ingot speed, the sliding speed of the steel wire ring must be synchronously increased, and the steel wire ring is easy to wear with the ring runway, glue at high temperature, separate from the runway and the like under the influence of comprehensive factors such as spun yarn tension, wind resistance, contact friction, boundary friction and the like. The technical research aiming at winding is not in the rise in the industry, and the rotation speed which can be borne by the steel wire ring can be improved to a certain extent by replacing manufacturing materials, improving the heat treatment technology, coating antifriction materials on the steel wire ring and the steel collar and the like.
The patent ' magnetic suspension ring ', ' ring assembly supported by rollers and capable of driving rotation ' and ' ring assembly supported by spherical roller paths and ' ring capable of driving rotation ' all try to adopt a method of reducing relative speed by relative movement from a mechanical structure, so that the ring and the traveler rotate in the same direction to reduce the relative speed between the ring and the traveler, thereby realizing high-speed winding; however, the structures described in these patents all retain the traveler, and analysis suggests that the relative speed between the traveler and the ring can be reduced, but the speed between the traveler and the spinning frame fixing part is not reduced, so long as the traveler exists and passively slides along the ring track under the traction of the spun yarn, the tension, wind resistance, contact friction and boundary friction of the spun yarn, which are applied to the traveler, are still the determining factors limiting the smooth running of the traveler; if a winding technology with a broken structure cannot be provided, and the research is perfected, the large-scale speed increase of the ring spinning can only be carried out within a limited range.
Disclosure of Invention
In order to solve the technical problem, the invention provides a suspension type active false twisting winding device of a ring spinning frame, which is characterized in that a rotor is suspended in a cavity of a stator supporting and mounting plate by means of interaction between magnetic forces on the basis of not changing the original ring spinning yarn forming principle, and the other function of the magnetic forces is to ensure that the rotor is always positioned at the center of the cavity; the rotation and braking of the rotor are actively controlled under a controlled state by virtue of an electromagnetic field generated after a plurality of groups of built-in coils in the electromagnetic stator are electrified, a yarn guide groove is formed in the upper plane of the rotor, and the notches replace the action of an original steel wire ring to finish the false twisting and winding of the spun yarn; because the stepping and servo technology of the motor is mature at present, the structure is easy to realize, so that the false twist winding speed of the spun yarn is improved, and high-speed spinning is realized under the ring spinning technology.
In order to achieve the purpose of the invention, the technical scheme is as follows:
a suspended active false-twist winding device of a ring spinning frame comprises a rotor, a stator supporting and mounting plate and an electromagnetic stator, wherein the electromagnetic stator is arranged on the stator supporting and mounting plate, and the rotor and the electromagnetic stator are suspended coaxially through a magnetic field. The magnetic rings on the rotor and stator support mounting plates enable the rotor to suspend and center by the principle that homopolar magnetic fields repel each other, and non-entity contact type support is achieved; the driving and braking of the rotor are realized through the motor principle, the active steel collar technology is adopted, the steel traveler used for ring spinning is completely cancelled, and the active, controllable and high-speed false twisting and winding of the ring spinning frame in the spinning process are realized, so that the high-speed spinning is realized.
Further, the rotor comprises a yarn guide groove, a yarn guide groove installation piece, a driving rotating ring, a magnetic ring and a multi-pole pair permanent magnet tile, wherein the yarn guide groove is arranged in the yarn guide groove installation piece, the yarn guide groove installation piece is arranged at the upper end of the driving rotating ring, the magnetic ring is arranged on the outer side of the driving rotating ring, and the multi-pole pair permanent magnet tile is arranged at the lower end of the driving rotating ring.
Furthermore, the material of the yarn guide groove is ceramic or alloy, and the yarn guide groove is arranged in the mounting hole of the yarn guide groove mounting piece through bonding or pressure distribution.
Furthermore, the magnetic ring adopts a permanent magnetic ring or an electromagnetic ring.
Further, the multi-pole pair of permanent magnet tiles are arranged at the lower end of the driving rotary ring through bonding or pressure distribution.
Further, the stator support mounting plate comprises a permanent magnet ring and a mounting plate, the permanent magnet ring is arranged on the mounting plate, the rotor is suspended by a magnetic field of the permanent magnet ring, and the rotor and the permanent magnet ring are guaranteed to be concentric.
Further, the electromagnetic stator is composed of a protective shell, a built-in integrated circuit and a field coil winding. Actually, the motor excitation winding and the protective shell are combined, the control system controls the size, the direction and the on-off of current, the driving coil drives the rotor to rotate, and the braking coil brakes the rotor.
The invention has the beneficial effects that: the suspension type active false twisting winding device of the ring spinning frame does not change the principle of ring spinning, so that the quality and style of ring spun yarns are not influenced; the invention utilizes the mature magnetic suspension technology, so that the rotor and the electromagnetic stator are not in contact with each other, and the high-speed spinning is easy to implement because the support pieces are not subjected to solid contact friction heat generation and the rotating speed is not stable; the invention cancels the steel wire ring on the ring spinning frame, and the active rotation of the steel collar completely replaces the passive sliding of the steel wire ring, thus thoroughly solving the problems of poor operation and broken ends of spun yarns caused by separation from a runway caused by the above reasons under the high-speed rotation state of the steel wire ring, and avoiding the need of replacing the steel wire ring regularly; the invention is structurally characterized in that the technology of ' fixing the height of the balloon ', namely fixing the stator supporting and mounting plate ', in the ring spinning process can be easily implemented, and the phenomenon of yarn breakage caused by the tension change of the spun yarn due to the height change of the balloon in the spinning process can be reduced; the invention is beneficial to the cleaning work of the wiping car of the spinning frame, after the steel wire ring is cancelled, the rotor is suspended in the cavity of the stator supporting mounting plate, and the rotor can be conveniently taken down to be cleaned in a stop state; the invention is beneficial to implementing the technology of 'automatic piecing robot', because a steel wire ring is cancelled and replaced by an open C-shaped yarn guide groove, the processes of finding the head, drawing the yarn, threading the yarn and piecing by a manipulator are greatly simplified, which is very beneficial to improving the automation level of a spinning workshop; and because the spun yarn splicing process is easy to implement, the subsequent research on the spun yarn on-line detection technology is also greatly benefited, and the whole spinning process is greatly improved in the direction of intellectualization and no humanization.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic perspective view of a suspension type active false twist winding device of a ring spinning frame according to the present invention;
FIG. 2 is a schematic structural view of a suspended active false twist winding device of a ring spinning frame according to the present invention;
FIG. 3 is a schematic perspective view of a rotor according to the present invention;
FIG. 4 is a schematic front view of a rotor according to the present invention;
FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;
FIG. 6 is a schematic top view of a rotor according to the present invention;
FIG. 7 is a schematic perspective view of a stator support mounting plate according to the present invention;
fig. 8 is a front view of the stator supporting and mounting plate of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example one
As shown in fig. 1-8, a suspension type active false twist winding device of a ring spinning frame comprises a rotor 1, a stator supporting and mounting plate 2 and an electromagnetic stator 3, wherein the electromagnetic stator 3 is arranged on the stator supporting and mounting plate 2, and the rotor 1 and the electromagnetic stator 3 are coaxially arranged through magnetic field suspension. The rotor 1 and the magnetic rings on the stator supporting and mounting plate 2 enable the rotor 1 to suspend and center through the principle that homopolar magnetic fields repel each other, so that non-entity contact type supporting is realized; the driving and braking of the rotor are realized through the motor principle, the active steel collar technology is adopted, the steel traveler used for ring spinning is completely cancelled, and the active, controllable and high-speed false twisting and winding of the ring spinning frame in the spinning process are realized, so that the high-speed spinning is realized.
Further, the rotor 1 comprises a yarn guide groove 4, a yarn guide groove installation piece 5, a driving rotary ring 6, a magnetic ring 7 and a multi-pole pair permanent magnet tile 8, wherein the yarn guide groove 4 is arranged in the yarn guide groove installation piece 5, the yarn guide groove installation piece 5 is arranged at the upper end of the driving rotary ring 6, the magnetic ring 7 is arranged on the outer side of the driving rotary ring 6, and the multi-pole pair permanent magnet tile 8 is arranged at the lower end of the driving rotary ring 6.
Furthermore, the material of the yarn guide groove 4 is ceramic, and the yarn guide groove 4 is arranged in the mounting hole of the yarn guide groove mounting piece 5 through bonding.
Further, the magnetic ring 7 adopts a permanent magnetic ring.
Further, the multi-pole pair of permanent magnet tiles 8 are arranged at the lower end of the driving rotary ring 6 by adhesion.
Further, the stator supporting and mounting plate 2 comprises a permanent magnet ring 9 and a mounting plate 10, the permanent magnet ring 9 is arranged on the mounting plate 10, the rotor 1 is suspended by the magnetic field of the permanent magnet ring 9, and the rotor 1 and the permanent magnet ring 9 are ensured to be concentric.
Further, the electromagnetic stator 3 is composed of a protective case, a built-in integrated circuit, and a field coil winding. Actually, the motor excitation winding and the protective shell are combined, the control system controls the size, the direction and the on-off of current, the driving coil drives the rotor to rotate, and the braking coil brakes the rotor.
Example two
As shown in fig. 1-8, a suspension type active false twist winding device of a ring spinning frame comprises a rotor 1, a stator supporting and mounting plate 2 and an electromagnetic stator 3, wherein the electromagnetic stator 3 is arranged on the stator supporting and mounting plate 2, and the rotor 1 and the electromagnetic stator 3 are coaxially arranged through magnetic field suspension. The rotor 1 and the magnetic rings on the stator supporting and mounting plate 2 enable the rotor 1 to suspend and center through the principle that homopolar magnetic fields repel each other, so that non-entity contact type supporting is realized; the driving and braking of the rotor are realized through the motor principle, the active steel collar technology is adopted, the steel traveler used for ring spinning is completely cancelled, and the active, controllable and high-speed false twisting and winding of the ring spinning frame in the spinning process are realized, so that the high-speed spinning is realized.
Further, the rotor 1 comprises a yarn guide groove 4, a yarn guide groove installation piece 5, a driving rotary ring 6, a magnetic ring 7 and a multi-pole pair permanent magnet tile 8, wherein the yarn guide groove 4 is arranged in the yarn guide groove installation piece 5, the yarn guide groove installation piece 5 is arranged at the upper end of the driving rotary ring 6, the magnetic ring 7 is arranged on the outer side of the driving rotary ring 6, and the multi-pole pair permanent magnet tile 8 is arranged at the lower end of the driving rotary ring 6.
Furthermore, the material of the yarn guide groove 4 is alloy, and the yarn guide groove 4 is arranged in the mounting hole of the yarn guide groove mounting piece 5 through pressure distribution.
Further, the magnetic ring 7 is an electromagnetic ring.
Further, the multipole pair permanent magnet tiles 8 are arranged at the lower end of the driving rotating ring 6 through pressure distribution, and the multipole pair permanent magnet tiles 8 are arranged at the lower end of the driving rotating ring 6 through pressure distribution.
Further, the stator supporting and mounting plate 2 comprises a permanent magnet ring 9 and a mounting plate 10, the permanent magnet ring 9 is arranged on the mounting plate 10, the rotor 1 is suspended by the magnetic field of the permanent magnet ring 9, and the rotor 1 and the permanent magnet ring 9 are ensured to be concentric.
Further, the electromagnetic stator 3 is composed of a protective case, a built-in integrated circuit, and a field coil winding. Actually, the motor excitation winding and the protective shell are combined, the control system controls the size, the direction and the on-off of current, the driving coil drives the rotor to rotate, and the braking coil brakes the rotor.
The suspension type active false twisting winding device of the ring spinning frame does not change the principle of ring spinning, so that the quality and style of ring spun yarns are not influenced; the invention utilizes the mature magnetic suspension technology, so that the rotor and the electromagnetic stator are not in contact with each other, and the high-speed spinning is easy to implement because the support pieces are not subjected to solid contact friction heat generation and the rotating speed is not stable; the invention cancels the steel wire ring on the ring spinning frame, and the active rotation of the steel collar completely replaces the passive sliding of the steel wire ring, thus thoroughly solving the problems of poor operation and broken ends of spun yarns caused by separation from a runway caused by the above reasons under the high-speed rotation state of the steel wire ring, and avoiding the need of replacing the steel wire ring regularly; the invention is structurally characterized in that the technology of ' fixing the height of the balloon ', namely fixing the stator supporting and mounting plate ', in the ring spinning process can be easily implemented, and the phenomenon of yarn breakage caused by the tension change of the spun yarn due to the height change of the balloon in the spinning process can be reduced; the invention is beneficial to the cleaning work of the wiping car of the spinning frame, after the steel wire ring is cancelled, the rotor is suspended in the cavity of the stator supporting mounting plate, and the rotor can be conveniently taken down to be cleaned in a stop state; the invention is beneficial to implementing the technology of 'automatic piecing robot', because a steel wire ring is cancelled and replaced by an open C-shaped yarn guide groove, the processes of finding the head, drawing the yarn, threading the yarn and piecing by a manipulator are greatly simplified, which is very beneficial to improving the automation level of a spinning workshop; and because the spun yarn splicing process is easy to implement, the subsequent research on the spun yarn on-line detection technology is also greatly benefited, and the whole spinning process is greatly improved in the direction of intellectualization and no humanization.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A suspended active false-twist winding device of a ring spinning frame is characterized by comprising a rotor (1), a stator supporting and mounting plate (2) and an electromagnetic stator (3), wherein the electromagnetic stator (3) is arranged on the stator supporting and mounting plate (2), and the rotor (1) and the electromagnetic stator (3) are suspended coaxially through a magnetic field.
2. The suspended active false twist winding device of a ring spinning frame according to claim 1, wherein the rotor (1) comprises a yarn guide groove (4), a yarn guide groove mounting piece (5), an active rotating ring (6), a magnetic ring (7) and multi-pole pair permanent magnet tiles (8), the yarn guide groove (4) is arranged in the yarn guide groove mounting piece (5), the yarn guide groove mounting piece (5) is arranged at the upper end of the active rotating ring (6), the magnetic ring (7) is arranged at the outer side of the active rotating ring (6), and the multi-pole pair permanent magnet tiles (8) are arranged at the lower end of the active rotating ring (6).
3. The suspended active false twist winding device of a ring spinning frame according to claim 2, characterized in that the material of the yarn guide groove (4) is ceramic or alloy, and the yarn guide groove (4) is arranged in the mounting hole of the yarn guide groove mounting piece (5) through bonding or pressure fitting.
4. The suspended active false twist winding device of a ring spinning frame as claimed in claim 2, wherein the magnetic ring (7) is a permanent magnet ring or an electromagnetic ring.
5. The floated active false twist winding device of ring spinning frame as claimed in claim 2, wherein the multiple pole pairs of permanent magnetic tiles (8) are bonded or pressed at the lower end of the active rotary ring (6).
6. The suspended active false twist winding device of a ring spinning frame according to claim 1, characterized in that the stator supporting mounting plate (2) comprises a permanent magnet ring (9) and a mounting plate (10), the permanent magnet ring (9) is arranged on the mounting plate (10), the magnetic field of the permanent magnet ring (9) suspends the rotor (1) and ensures that the rotor (1) and the permanent magnet ring (9) are concentric.
7. The suspended active false twist winding device of a ring spinning frame according to claim 1, characterized in that the electromagnetic stator (3) is composed of a protective shell, a built-in integrated circuit and a field coil winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110779196.9A CN113430686A (en) | 2021-07-09 | 2021-07-09 | Suspension type active false twisting winding device of ring spinning frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110779196.9A CN113430686A (en) | 2021-07-09 | 2021-07-09 | Suspension type active false twisting winding device of ring spinning frame |
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| Publication Number | Publication Date |
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| CN113430686A true CN113430686A (en) | 2021-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110779196.9A Pending CN113430686A (en) | 2021-07-09 | 2021-07-09 | Suspension type active false twisting winding device of ring spinning frame |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1212737A (en) * | 1996-02-29 | 1999-03-31 | 联邦科学和工业研究组织 | Reducing end breaks in spinning or twisting of yarn |
| DE102007010144A1 (en) * | 2007-02-28 | 2008-09-04 | Deutsche Institute für Textil- und Faserforschung Stuttgart | Thread guiding device for a ring spinning frame comprises a cap arranged on an annular spindle and connected to a twisting element which has grooves on the periphery for taking up the thread from the twisting element |
| CN206783859U (en) * | 2017-05-18 | 2017-12-22 | 忠华集团有限公司 | A kind of low twist yarn feeding device |
| CN211522419U (en) * | 2019-11-15 | 2020-09-18 | 北京中科远恒科技有限公司 | Yarn twisting and winding device and ring spinning machine with same |
| CN215328535U (en) * | 2021-07-09 | 2021-12-28 | 经纬纺织机械股份有限公司 | Suspension type active false twisting winding device of ring spinning frame |
-
2021
- 2021-07-09 CN CN202110779196.9A patent/CN113430686A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1212737A (en) * | 1996-02-29 | 1999-03-31 | 联邦科学和工业研究组织 | Reducing end breaks in spinning or twisting of yarn |
| DE102007010144A1 (en) * | 2007-02-28 | 2008-09-04 | Deutsche Institute für Textil- und Faserforschung Stuttgart | Thread guiding device for a ring spinning frame comprises a cap arranged on an annular spindle and connected to a twisting element which has grooves on the periphery for taking up the thread from the twisting element |
| CN206783859U (en) * | 2017-05-18 | 2017-12-22 | 忠华集团有限公司 | A kind of low twist yarn feeding device |
| CN211522419U (en) * | 2019-11-15 | 2020-09-18 | 北京中科远恒科技有限公司 | Yarn twisting and winding device and ring spinning machine with same |
| CN215328535U (en) * | 2021-07-09 | 2021-12-28 | 经纬纺织机械股份有限公司 | Suspension type active false twisting winding device of ring spinning frame |
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