CN113062017A - Twisting strand and continuous forming method thereof - Google Patents
Twisting strand and continuous forming method thereof Download PDFInfo
- Publication number
- CN113062017A CN113062017A CN202110260471.6A CN202110260471A CN113062017A CN 113062017 A CN113062017 A CN 113062017A CN 202110260471 A CN202110260471 A CN 202110260471A CN 113062017 A CN113062017 A CN 113062017A
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- Prior art keywords
- fiber
- strand
- twisting
- twisted
- twist
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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
- D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
- D01H1/08—Spinning or twisting machines in which the product is wound-up continuously cup, pot or disc type, in which annular masses of yarn are formed by centrifugal action
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
- D01H1/14—Details
- D01H1/36—Package-shaping arrangements, e.g. building motions, e.g. control for the traversing stroke of ring rails; Stopping ring rails in a predetermined position
Abstract
The invention relates to a poly-twisted strand and a continuous forming method thereof.A continuously fed fiber stream is subjected to rotary coagulation twisting, and then is guided out after being subjected to twisting to obtain a continuous poly-twisted strand; the rotating coagulation twisting refers to the centrifugal coagulation and twisting of the fiber flow; the twisting is to increase the twist of the fiber strip after rotating, condensing and twisting, and to withdraw all or part of the twist after twisting; the prepared poly-twisted fiber strand is a continuous fiber strand with fibers in a single fiber state and uniformly distributed longitudinally; the linear density of the fiber strand ranges from 1000 to 2000tex, and the twist degree ranges from 5 to 20 twists/m. The continuous forming method of the poly-twisted fiber strand can prepare the fiber strand meeting the conditions required by the ultra-large drafting of the spinning frame, and provides an effective method for realizing the ultra-large drafting of the spinning frame; the prepared poly-twisted fiber strand has the quantitative ratio between the quantitative ratio of the existing roving and the quantitative ratio of the prepared drawn fiber strand, can meet the quantitative requirement of the ultra-large drawing on the fiber strand, has certain twist, and can effectively solve the phenomena of strand breakage and accidental drawing during spinning.
Description
Technical Field
The invention belongs to the technical field of spinning, and relates to a poly-twisted fiber strip and a continuous forming method thereof.
Background
As the most mature and widely applied spinning mode developed today, ring spinning has a basic process flow of open → carding → (combing preparation, combing) → drawing → roving → spun yarn. In order to ensure the quality of spun yarns, a roving process is required to be arranged between drawing and spinning processes, because when drawn slivers made by a drawing frame are directly drawn into yarns by a spinning frame, the drawing multiple of the spinning frame needs to be more than 300 times, and the quality of the spun yarns is difficult to ensure. The reason why the spun yarn quality is difficult to be ensured is: firstly, the draft multiple of a common spinning frame is difficult to reach more than 300 times, and even if the draft multiple is reached, the running stability of a draft part cannot meet the requirement due to overlarge draft multiple; secondly, the sliver made by the drawing frame has larger ration (usually 15-25 g/5m), the number of fibers in the sliver is more, and the existing drafting device of the ring spinning frame controls the fibers with more number unevenly. Therefore, the roving process is one of the necessary processes for ring spinning at the present stage. Compared with other novel spinning modes such as rotor spinning and air jet spinning, the ring spinning has the advantages that the process flow is long due to the existence of a roving process, and the cost in the aspects of equipment, labor and the like is high. In order to solve the problem, a ring spinning frame with an ultra-large drafting device becomes a hotspot of the current stage research.
The ring spinning frame with super large drafting device is used for spinning, the method is usually adopted that the drawn sliver made by the drawing frame is directly fed into the drafting zone of the spinning frame, and the drawn sliver is spun into spun yarn after being drafted and twisted by the drafting device of the spinning frame. However, when the ring spun yarn is spun by adopting an ultra-large drafting mode, the number of spun yarns is not too high, and is usually less than 21 English. This is because the drafting capacity of the drafting device is limited in any type of ring spinning frame with ultra-high draft, and when a certain draft multiple is exceeded, the drafting quality of the fiber by the drafting zone is reduced, so that when the count of the spun yarn is too high, the quality of the yarn is difficult to be ensured, which becomes one of the main factors limiting the application of ultra-high draft. To solve this problem, in addition to the improvement of the drawing capacity of the drawing device, it is also an important measure to reduce the quantitative amount of the fed cooked chips. At the present stage, the quantitative quantity of the drawn sliver fed into the super-large drafting device is not too light, because the drawn sliver has no twist degree due to the existing drawn sliver forming technology, when the quantitative quantity is too light, the combination tightness degree of fiber aggregates in the drawn sliver is poor due to the small number of the fiber aggregates, when spun yarns are spun, the drawn sliver is easy to break, and the accidental drafting phenomenon is easy to generate, so the quantitative quantity of the drawn sliver made by the drawing frame is not too light, and the finished sliver with the quantitative quantity being light and the certain twist degree is a necessary condition for realizing the super-large drafting by ring spinning.
Disclosure of Invention
The invention aims to solve the technical problem of how to manufacture fiber strands with light quantification and certain twist to realize the ultra-large drafting of ring spinning, and provides a poly-twisted fiber strand and a continuous forming method thereof.
One of the objectives of the present invention is to provide a method for continuously forming a poly-twisted strand, in which a continuously fed fiber stream is rotated to coagulate and twist, and then twisted and discharged, thereby obtaining a continuous poly-twisted strand.
The second purpose of the invention is to provide a poly-twisted strand, which is a continuous strand of fiber with single fiber state and uniform longitudinal distribution; the linear density of the fiber strand ranges from 1000 to 2000tex, and the twist degree ranges from 5 to 20 twists/m.
The invention relates to a continuous forming method of a poly-twisted strand, which comprises the steps of enabling a continuously fed fiber stream to rotate, condense and twist, then conducting twisting and leading out to obtain a continuous poly-twisted strand;
the poly-twisted fiber strand is a fiber strand with linear density ranging from 1000tex to 2000tex and twist degree ranging from 5 twist/m to 20 twist/m;
the rotary coagulation twisting refers to the coagulation and twisting of fiber flow by centrifugation;
the twist increasing means that the twist of the fiber strips after rotating, condensing and twisting is increased, and all or part of the twist increased by the twist increasing is removed after the fiber strips are led out.
As a preferred technical scheme:
in the continuous forming method of the poly-twisted fiber strand, the centrifugally coagulating and twisting means that the continuously fed fiber stream is fed into a rotating receiving device and is uniformly gathered in the receiving device under the action of centrifugal force; one end of the fiber strand gathered in the receiving device is led out by the strand leading device.
According to the continuous forming method of the poly-twisted fiber strip, the receiving device is cylindrical, annular or round cup-shaped, the rotating speed of the receiving device is 1000-3000 r/min, and the diameter of the receiving device is 300-500 mm.
A method for continuously forming a twisted strand as described above, said twisting being a frictional twisting; the fiber strand coagulated and twisted by the receiving device is subjected to friction twisting by a rotary friction twisting component on a path led out by the guide device.
In the method for continuously forming the poly-twisted fiber strand, the rotating speed of the rotating friction twisting-increasing component is 50-600 r/min, and the increased twist is 5-20% of the designed twist (the designed twist is the twist of the finally obtained fiber strand and is mainly determined by the rotating speed of the receiving device and the strand guiding speed of the strand guiding device, the rotating twisting-increasing component increases the twist of the fiber strand in the process of guiding out the path so as to enhance the strength of the fiber strand in the strand guiding process and reduce the occurrence of the phenomenon of broken ends, but the rotating twisting-increasing component finally performs the false twisting action on the fiber strand, and the increased twist can be completely or partially withdrawn under the untwisting action, so that the change of the final twist of the fiber strand is less influenced).
In the above continuous forming method of the poly-twisted fiber strand, the fiber strand is a cotton fiber strand, a viscose fiber strand or a polyester fiber strand, and may be other fiber strands.
In the method for continuously forming the twisted yarn, the continuously fed fiber stream is a fiber stream formed by carding and impurity removing of fibers by a carding device, and the fiber stream is continuously and uniformly fed into the receiving device at a certain flow rate.
The continuous forming method of the poly-twisted fiber strand as described above has a certain flow rate of 150-300 g/min, where the quantitative amount of the fiber flow is related to the quantitative amount of the finally prepared fiber strand, and is influenced by the rotating speed of the receiving device and the drawing speed of the fiber strand guiding device, the quantitative amount of the fiber strand is 1-2 g/m, and the speed of the fiber strand guiding device can be approximately calculated to be about 110-200 m/min according to the rotating speed and the twist, so the quantitative amount of the fed fiber flow is 150-300 g/min.
In the continuous forming method of the poly-twisted fiber strand, the unwinding refers to that the twisted fiber strand is held and unwound by a pair of guide roller.
The invention also provides a poly-twisted strand, which is a continuous strand of fibers in a single fiber state and uniformly distributed longitudinally; the linear density of the fiber strand ranges from 1000 to 2000tex, and the twist degree ranges from 5 to 20 twists/m.
The principle of the invention is as follows:
the invention relates to a poly-twisted fiber strip and a continuous forming method thereof, wherein a fiber flow is continuously fed into a rotary receiving device, the fiber flow is uniformly condensed on the surface of the rotary receiving device under the action of centrifugal force, the fiber distribution is uniform, one end of the fiber strip is held and led out by a strip leading device, a certain twist degree is applied to the fiber strip due to the rotary friction action of the rotary device and the holding action of the strip leading device, and the broken end phenomenon of the fiber strip on a leading-out path is greatly reduced due to the friction and twisting of the fiber strip by a twisting increasing device on the leading-out path, so the fiber strip has continuity. Meanwhile, the quantitative amount and the twist degree of the fiber strand can be controlled by controlling the quantitative amount of the feeding fiber flow, the rotating speed of the rotary receiving device and the speed of the strand guiding device.
The fiber strand prepared by the invention has the advantages that the quantitative ratio of the existing roving and the mature strand is between the quantitative ratio of the existing roving and the quantitative ratio of the existing mature strand, the requirement of the ultra-large drafting on the quantitative ratio of the fiber strand can be met, and the fiber strand prepared by the invention has the twist, so the phenomena of strand breakage and accidental drafting during spinning can be effectively solved. The yarn is spun on the ultra-large drafting ring spinning frame by utilizing the poly-twisted fiber strand, the number of the spun yarn can reach more than 40 English counts, the number of the spun yarn is effectively increased under the condition of not changing the existing drafting device, the application range of ultra-large drafting is widened, an effective solution and a development idea are provided for eliminating a roving process finally in ring spinning, and the poly-twisted fiber strand has a better application prospect.
Advantageous effects
(1) The continuous forming method of the poly-twisted fiber strand can be used for preparing the fiber strand meeting the conditions required by the ultra-large drafting of the spinning frame, and provides an effective realization method for realizing the ultra-large drafting of the spinning frame;
(2) the quantitative of the poly-twisted fiber strand is between the quantitative of the existing roving and the quantitative of the drawn fiber strand, the quantitative is light, the requirement of ultra-large drafting on the quantitative of the fiber strand can be met, and the poly-twisted fiber strand has certain twist, and can effectively solve the phenomena of fiber strand breakage and accidental drafting during spinning.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Example 1
A continuous forming method of a poly-twisted strand comprises the following specific processes:
the cotton fiber stream (formed by carding cotton fibers after impurity removal by a carding device) is continuously and uniformly fed into a rotating cylindrical receiving device (the rotating speed of the receiving device is 1000r/min) with the diameter of 300mm at the flow rate of 200g/min, the cotton fiber stream is uniformly gathered in the receiving device under the action of centrifugal force to obtain cotton fiber strands, one end of each cotton fiber strand is led out by a guide device, and the cotton fiber strands are subjected to friction twisting by a rotating friction twisting part (the rotating speed is 50r/min) on a path led out by the guide device, so that the twist (the increased twist is 5% of the designed twist) of the strands is increased, and after the cotton fiber strands are led out and are retreated from the twisting, all the increased twist is guided out by a pair of guide strip rollers to obtain the continuous twisted yarn gathering strips.
The prepared poly-twisted fiber strand is a continuous fiber strand with fibers in a single fiber state and uniformly distributed longitudinally; the linear density of the fiber strand was 1000tex, and the twist number was 5 twists/m.
Example 2
A continuous forming method of a poly-twisted strand comprises the following specific processes:
viscose fiber flow (formed by carding viscose fiber through a carding device after impurity removal) is continuously and uniformly fed into a rotary circular receiving device (the rotating speed of the receiving device is 1500r/min) with the diameter of 350mm at the flow rate of 150g/min, the viscose fiber flow is uniformly gathered in the receiving device under the action of centrifugal force to obtain viscose fiber strands, one end of each viscose fiber strand is led out by a strand guiding device, and is subjected to friction twisting increase by a rotary friction twisting increasing part (the rotating speed is 120r/min) on a path led out by the strand guiding device, so that the twist degree of the twisted fiber strands is increased (the increased twist degree is 8% of the designed twist degree), and after the viscose fiber flow is led out, the part of the increased twist degree is withdrawn and increased, the viscose fiber strands are held by a pair of guide roller and led out to obtain continuous poly twisted fiber strands.
The prepared poly-twisted fiber strand is a continuous fiber strand with fibers in a single fiber state and uniformly distributed longitudinally; the linear density of the fiber strand was 1200tex, and the twist number was 12.2 twists/m.
Example 3
A continuous forming method of a poly-twisted strand comprises the following specific processes:
feeding a polyester fiber stream (formed by carding and impurity removal of polyester fibers by a carding device) into a rotating cup-shaped receiving device (the rotating speed of the receiving device is 2000r/min) with the diameter of 400mm continuously and uniformly at the flow rate of 200g/min, uniformly gathering the polyester fiber stream in the receiving device under the action of centrifugal force to obtain a polyester fiber strand, leading one end of the polyester fiber strand out of a strand guiding device, and rubbing and twisting the polyester fiber strand by a rotating friction twisting part (the rotating speed is 240r/min) on a path led out by the strand guiding device, so that the twist degree of the twisted strand is increased (the increased twist degree is 12% of the designed twist degree), retreating after leading out, twisting the increased twist degree, and leading out the twisted strand by a pair of strand guide rollers to obtain a continuous twisted strand.
The prepared poly-twisted fiber strand is a continuous fiber strand with fibers in a single fiber state and uniformly distributed longitudinally; the linear density of the fiber strand was 1600tex, and the twist number was 16 twists/m.
Example 4
A continuous forming method of a poly-twisted strand comprises the following specific processes:
the cotton fiber stream (formed by carding and impurity removal of cotton fibers by a carding device) is continuously and uniformly fed into a rotating cylindrical receiving device with the diameter of 450mm at the flow rate of 250g/min (the rotating speed of the receiving device is 2500r/min), the cotton fiber stream is uniformly gathered in the receiving device under the action of centrifugal force to obtain cotton fiber strands, one end of each cotton fiber strand is led out by a guide device, and the cotton fiber strands are subjected to friction twisting by a rotating friction twisting part (the rotating speed is 400r/min) on a path led out by the guide device, so that the twist degree of the strands after twisting is increased (the increased twist degree is 16% of the designed twist degree), and after the cotton fiber stream is led out and the portion with the increased twist degree is retreated, the cotton fiber stream is led out by a pair of guide strip rollers to be held, and the continuous twisted strand gathering is obtained.
The prepared poly-twisted fiber strand is a continuous fiber strand with fibers in a single fiber state and uniformly distributed longitudinally; the linear density of the fiber strand was 1800tex, and the twist number was 18.3 twists/m.
Example 5
A continuous forming method of a poly-twisted strand comprises the following specific processes:
viscose fiber flow (formed by carding viscose fiber through a carding device after impurity removal) is continuously and uniformly fed into a rotary annular receiving device with the diameter of 500mm at the flow rate of 300g/min (the rotary speed of the receiving device is 3000r/min), the viscose fiber flow is uniformly gathered inside the receiving device under the action of centrifugal force to obtain viscose fiber strands, one end of each viscose fiber strand is led out by a guide device, and is subjected to friction twisting increase by a rotary friction twisting increase part (the rotary speed is 600/min) on a path led out by the guide device, so that the twist (the increased twist is 20% of the designed twist) of the fiber strands after twisting is increased, and after the part of the increased twist is led out, the part is withdrawn and removed, and is held by a pair of guide roller to be led out to obtain the continuous poly-twisted fiber strands.
The prepared poly-twisted fiber strand is a continuous fiber strand with fibers in a single fiber state and uniformly distributed longitudinally; the linear density of the fiber strand was 2000tex, and the twist number was 20.5 twists/m.
Claims (10)
1. A continuous forming method of a poly-twisted strand is characterized in that: continuously feeding fiber flow, rotating, coagulating and twisting, twisting again, and guiding out to obtain continuous strand of coagulated and twisted fibers;
the poly-twisted fiber strand is a fiber strand with linear density ranging from 1000tex to 2000tex and twist degree ranging from 5 twist/m to 20 twist/m;
the rotary coagulation twisting refers to the centrifugal coagulation and twisting of fiber flow;
the twist increasing means that the twist of the fiber strips after rotating, condensing and twisting is increased, and all or part of the twist increased by the twist increasing is removed after the fiber strips are led out.
2. The continuous forming method of the poly-twisted fiber strand as claimed in claim 1, wherein the centrifugal coagulation and twisting means that the continuously fed fiber stream is fed to a rotating receiving device and is uniformly concentrated inside the receiving device by centrifugal force; one end of the fiber strand gathered in the receiving device is led out by the strand leading device.
3. The method for continuously forming a twisted yarn according to claim 2, wherein the receiving device is cylindrical, annular or cup-shaped, the rotating speed of the receiving device is 1000 to 3000r/min, and the diameter of the receiving device is 300 to 500 mm.
4. The continuous forming method of a poly-twisted fiber strand as claimed in claim 3, wherein said twisting is friction twisting; the fiber strand coagulated and twisted by the receiving device is subjected to friction twisting by a rotary friction twisting component on a path led out by the guide device.
5. The method for continuously forming a poly-twisted yarn according to claim 4, wherein the rotational speed of the rotating friction twist increasing member is 50 to 600r/min, and the increased twist is 5 to 20% of the design twist.
6. The continuous forming method of the poly-twisted yarn bundle as claimed in claim 1, wherein the fiber yarn bundle is a cotton fiber yarn bundle, a viscose fiber yarn bundle or a polyester fiber yarn bundle.
7. The method according to claim 2, wherein the continuously feeding fiber stream is a fiber stream formed by carding fibers to remove impurities by a carding device, and the fiber stream is continuously and uniformly fed into the receiving device at a certain flow rate.
8. The continuous forming method of a twisted yarn bundle according to claim 7, wherein the constant flow rate is 150 to 300 g/min.
9. The method as claimed in claim 1, wherein the unwinding is performed by holding the twisted strands by a pair of guide rollers.
10. A poly-twisted strand is characterized in that: the fiber is a continuous fiber strand with single fiber state and uniform longitudinal distribution; the linear density of the fiber strand ranges from 1000 to 2000tex, and the twist degree ranges from 5 to 20 twists/m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110260471.6A CN113062017A (en) | 2021-03-10 | 2021-03-10 | Twisting strand and continuous forming method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110260471.6A CN113062017A (en) | 2021-03-10 | 2021-03-10 | Twisting strand and continuous forming method thereof |
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| CN113062017A true CN113062017A (en) | 2021-07-02 |
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| CN202110260471.6A Pending CN113062017A (en) | 2021-03-10 | 2021-03-10 | Twisting strand and continuous forming method thereof |
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Application publication date: 20210702 |