CN111607890B - Weaving method of bare ammonia plated flat knitted fabric and yarn feeding device thereof - Google Patents
Weaving method of bare ammonia plated flat knitted fabric and yarn feeding device thereof Download PDFInfo
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- CN111607890B CN111607890B CN202010472709.7A CN202010472709A CN111607890B CN 111607890 B CN111607890 B CN 111607890B CN 202010472709 A CN202010472709 A CN 202010472709A CN 111607890 B CN111607890 B CN 111607890B
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
- D04B1/18—Other fabrics or articles characterised primarily by the use of particular thread materials elastic threads
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/38—Devices for supplying, feeding, or guiding threads to needles
- D04B15/48—Thread-feeding devices
- D04B15/50—Thread-feeding devices for elastic threads
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/38—Devices for supplying, feeding, or guiding threads to needles
- D04B15/54—Thread guides
- D04B15/56—Thread guides for flat-bed knitting machines
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- Textile Engineering (AREA)
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Abstract
The invention discloses a weaving method of a bare ammonia plated flat knitted fabric and a yarn feeding device thereof, belonging to the technical field of textile product production. The device comprises: the device comprises a first yarn nozzle, a second yarn nozzle, a bare ammonia tube, a yarn guide roller, a constant tension yarn feeder, a buffer roller, a buffer arm, a flat knitting machine head and a flat knitting machine; the yarn feeding device comprises a flat knitting machine head, a yarn guiding roller, a buffering arm, a constant tension yarn feeder, a first yarn nozzle and a second yarn nozzle, wherein the first yarn nozzle and the second yarn nozzle are arranged on a yarn nozzle rail of the flat knitting machine, a bare ammonia tube is arranged on a creel on the upper portion of the flat knitting machine head, the buffering roller and the buffering arm are arranged on one side of the flat knitting machine head, the constant tension yarn feeder is arranged on the upper side of the buffering roller, and the yarn guiding roller is arranged on one side of the constant tension yarn feeder. According to the invention, bare spandex yarns are fed into the yarn mouth hole at the high position, and ordinary yarns are fed into the yarn mouth hole at the low position, so that the two yarns form a larger yarn padding longitudinal angle difference, thereby ensuring that the ordinary yarns are always exposed on the front side of the fabric and the spandex yarns are always on the back side of the fabric in a plating structure, and avoiding the phenomenon of yarn turnover and bottom exposure.
Description
Technical Field
The invention relates to a weaving method of a bare ammonia plated flat knitted fabric and a yarn feeding device thereof, belonging to the technical field of textile product production.
Background
After the naked ammonia yarn is added into the traditional clothes and is cut, the spandex at the edge of the cloth cover retracts along with the increase of the taking and washing times, and the curling and the raveling are easily formed to influence the appearance and the taking performance of the fabric. The patterns and the tissues of the clothes produced by the flat knitting machine are changed variously, the cutting of the fabric during forming can be reduced by local knitting, and the fully-formed knitted sweater also has the advantage of integral forming and realizes zero cutting. During the knitting process, elastic yarns are often inserted to increase the elasticity of the knitted fabric. At present, when high-elastic fabrics are woven on a fine needle flat knitting machine, phenomena of yarn turning, bottom exposure and the like often occur when spandex is used for covering yarns, the attractiveness of the fabrics is affected, and therefore bare ammonia yarns are needed to be used for plating knitting. The production of bare ammonia products by adding a bare ammonia positive yarn feeder on a seamless underwear machine is realized, but a small amount of cutting and sewing are still needed at seams, high-elasticity fabrics are easy to curl and fall off after being cut, and the problem can be well solved by a transverse knitting full-forming technology.
At present, a freely-cut seamless connection comfortable knitted fabric designed in the patent (CN208667986U) interweaves high-elastic and plastic spandex filaments and plastic staple fibers or filaments through a structure and then forms mutual-soluble adhesive points at joints through hot melting. Although the yarn turning of the plating structure and the edge curling after cutting can be prevented from being loosened to a certain extent, the processing requirements are greatly increased, the operation steps are increased, and the plating structure is not suitable for mass production. The patent (CN108866785A) mentions an elastic yarn feeding device in a flat knitting machine, which controls the tension stability of elastic yarn by adding a buffer arm and a torque generator in the yarn feeding mechanism, requires a lot of modification correction to the machine, and provides a lot of yarn guiding devices, increasing the friction sticking possibility of bare ammonia yarn and yarn guiding devices.
Disclosure of Invention
In order to solve the above problems, the present invention provides a yarn feeding device for bare ammonia plated flat knitted fabric, comprising: the device comprises a first yarn nozzle, a second yarn nozzle, a bare ammonia tube, a yarn guide roller, a constant tension yarn feeder, a buffer roller, a buffer arm, a flat knitting machine head and a flat knitting machine;
the first yarn nozzle and the second yarn nozzle are arranged on a yarn nozzle rail of the flat knitting machine, the bare ammonia yarn cylinder is arranged on a yarn rack at the upper part of a machine head of the flat knitting machine, the buffer roller and the buffer arm are arranged on one side of the machine head of the flat knitting machine, the constant-tension yarn feeder is arranged on the upper side of the buffer roller, and the yarn guide roller is arranged on one side of the constant-tension yarn feeder;
the yarn guide device comprises a first yarn nozzle, a second yarn nozzle, a yarn guide roller, a yarn guide porcelain eye, a yarn guide roller wheel, a yarn guide porcelain eye, a yarn guide hole porcelain eye, a yarn guide hole, a yarn guide porcelain eye, a porcelain guide hole; the common yarns and the spandex yarns form a yarn padding longitudinal angle difference.
In one embodiment of the invention, the ordinary yarn directly enters the first yarn nozzle through the yarn guide porcelain eye, and the bare ammonia yarn enters the second yarn nozzle through the yarn guide roller and the yarn guide porcelain eye in sequence.
In one embodiment of the present invention, the range of the yarn laying longitudinal angle difference is: 15-25 degrees.
In one embodiment of the invention, the constant tension feeder can be selected from the following models: a KTF (constant Tension feeder) constant Tension feeder or an EFS (electronic Tension control) constant Tension feeder.
In one embodiment of the invention, the first yarn nozzle and the second yarn nozzle are replaced by a single yarn nozzle with high and low yarn through holes, the single yarn nozzle with the high and low yarn through holes comprises a high yarn feeding hole and a low yarn feeding hole, the high yarn feeding hole is used for feeding spandex yarns, and the low yarn feeding hole is used for feeding common yarns.
In one embodiment of the invention, the yarn feeding path of bare ammonia yarn comprises: bare ammonia is transmitted to the yarn guide roller by the bare ammonia cylinder and then is subjected to tension control by the constant tension yarn feeder.
In one embodiment of the invention, the constant tension yarn feeder is positioned right above the buffer roller to simplify the yarn feeding path of bare ammonia yarn, reduce the friction angle and stabilize the tension fluctuation.
In one embodiment of the invention, in the design process of the bare ammonia plated flat knitted fabric, the common yarn is the face yarn, and the bare ammonia is the ground yarn.
In an embodiment of the present invention, the plain yarn is one or more of 48NM/2 wool yarn, plain chemical fiber yarn, and functional yarn, and the bare spandex yarn is 70D bare spandex yarn.
In an embodiment of the present invention, the flat knitting machine may be one of a general two-needle bed computerized flat knitting machine, a general multi-needle bed computerized flat knitting machine, and a full-forming computerized flat knitting machine.
In one embodiment of the present invention, the flat knitting machine has the following machine models: island essence MACH2XS, machine number E12.
The invention also provides a weaving method of the bare ammonia plated flat knitted fabric, which is characterized by comprising the following steps of:
the method comprises the following steps: bare ammonia filaments enter a constant tension yarn feeder from a bare ammonia filament barrel through a yarn guide roller, are sequentially transmitted into a buffer roller and a buffer arm after being subjected to tension balance by the constant tension yarn feeder, and the balance of the bare ammonia filaments is controlled through the up-and-down swinging of the buffer arm;
step two: when the flat knitting machine head moves left and right to drive the second yarn nozzle to knit, a part of yarn allowance is generated, the tension of the yarn is reduced, and the constant tension yarn feeder detects the change of the tension and does not feed yarn any more;
step three: the buffer arm absorbs a part of the yarn allowance through rebounding, so that the yarn tension is properly increased, and the bare ammonia yarn obtains stable tension;
step four: ordinary yarn passes through the second yarn mouth and carries the yarn, is driven by the aircraft nose simultaneously with the first yarn mouth of naked ammonia silk feeding, is taken by the same needle hook of weaving on the flat-bed machine, because naked ammonia silk fills up the yarn longitudinal angle and is greater than ordinary yarn and fills up the yarn longitudinal angle for ordinary yarn covers on naked ammonia silk when weaving, has guaranteed the relative position of plating, thereby obtains the naked ammonia silk knitting product of plating that the outward appearance effect is good.
Has the advantages that:
during yarn feeding, the relative position of the surface yarn and the ground yarn is staggered due to the tension fluctuation of the yarn, so that the yarn turning phenomenon is caused, and uneven horizontal stripes are generated on the cloth surface (for example, the front cloth surface effect is improved in the picture 3). In bare ammonia plated fabrics, tension fluctuations of ordinary face yarns can be balanced by ordinary yarn guiding paths; the bare ammonia yarn has the characteristics of large elasticity and easy adhesion, the tension of the bare ammonia yarn is easy to fluctuate in a common yarn guide path, and in order to ensure that the cloth cover effect of the plaiting texture of the bare ammonia yarn is uniform, the following measures are taken:
(1) the friction of the bare ammonia wire in the yarn feeding process is reduced as much as possible: all yarn conveying devices through which the bare ammonia yarns pass adopt the rollers to replace yarn guide porcelain eyes, and the bare ammonia yarns are woven by the side yarn guide rollers of the yarn nozzle, so that friction and adhesion between the yarn guide porcelain eyes and the bare ammonia yarns are avoided, tension fluctuation is reduced, and the bare ammonia yarns are continuously and stably conveyed under constant tension. The installation position of the constant tension yarn feeder is right above the yarn penetrating holes on two sides of the machine, and the yarn feeding device is used for conveying bare ammonia yarns, shortening the conveying path of the bare ammonia yarns and reducing the influence factors causing tension fluctuation.
(2) Guarantee to carry naked ammonia silk as required, avoid the overstretching to cause tension uneven: the invention uses the constant tension yarn feeder to feed bare spandex yarns, and automatically stores/feeds the yarns in the process of actively feeding the yarns, thereby uniformly controlling the tension and reducing the uneven tension fluctuation caused by high elasticity and high flexibility of the spandex yarns in the yarn feeding process. The spandex yarn passes through the buffer roller and the buffer arm and is used for absorbing yarn allowance caused by rotation of the machine head and further balancing tension fluctuation of the spandex yarn.
(3) Manufacturing a yarn cushion longitudinal angle difference to fix the relative positions of the surface yarn and the ground yarn: bare ammonia yarns are fed into the yarn mouth hole at the high position, and ordinary yarns are fed into the yarn mouth hole at the low position, so that the two yarns form a larger yarn padding longitudinal angle difference, the ordinary yarns are always exposed on the front side of the fabric in the yarn adding structure, the spandex yarns are always on the back side of the fabric, and the phenomenon that the yarns turn over and expose out of the bottom is avoided.
The invention is developed on a full-forming transverse knitting machine, can effectively avoid cutting and sewing at the joint, and solves the problem that the high-elasticity fabric is easy to curl and separate after being cut; after the machine is refitted by the three points, the yarn feeding relative position is guaranteed not to be broken by avoiding tension fluctuation of the naked ammonia yarn when the certain relative position of the surface yarn and the ground yarn is guaranteed, so that the cloth cover is guaranteed to be uniform (the cloth cover effect is improved as shown in figure 4), and finally high-quality, high-elasticity and full-forming knitted clothes are produced, and the application prospect is wide.
Drawings
Fig. 1 is a schematic view of a yarn feeding device for bare ammonia plated flat knitted fabric in example 1.
Fig. 2 is a diagram of an alternative yarn package with high and low hole yarn guide holes of example 1.
Fig. 3 is a view of a conventional bare ammonia plated flat knitted fabric.
FIG. 4 is a drawing of a bare ammonia plated flat knitted fabric obtained by the apparatus and method of the present invention.
In the figure: 1. the yarn feeding device comprises a first yarn nozzle, a second yarn nozzle, 3, bare ammonia, 4, common yarns, 5, a roller channel, 6, a yarn guide channel, 7, a bare ammonia cylinder, 8, a yarn guide roller, 9, a constant tension yarn feeder, 10, a buffer roller, 11, a buffer arm, 12, a flat knitting machine head, 13, a high yarn feeding hole, 14 and a low yarn feeding hole.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of better illustrating the invention and is not intended to limit the invention thereto.
Example 1
As shown in fig. 1, the present embodiment provides a yarn feeding device for bare ammonia plated flat knitted fabric, comprising: the device comprises a first yarn nozzle 1, a second yarn nozzle 2, a bare ammonia yarn 3, a common yarn 4, a roller channel 5, a yarn guide channel 6, a bare ammonia yarn cylinder 7, a yarn guide roller 8, a constant tension yarn feeder 9, a buffer roller 10, a buffer arm 11, a flat knitting machine head 12 and a flat knitting machine;
the yarn guide device comprises a first yarn nozzle 1, a second yarn nozzle 2, a yarn guide roller, a yarn guide porcelain eye, a yarn guide roller wheel, a yarn guide porcelain eye, a yarn guide hole porcelain eye, a yarn guide hole porcelain eye and a yarn guide hole, wherein the first yarn nozzle 1 and the second yarn nozzle 2 are identical in structure, the first yarn nozzle 1 is used for feeding common yarns 4, the second yarn nozzle 2 is used for feeding bare ammonia yarns 3, the first yarn nozzle 1 is arranged on one side of the second yarn nozzle 2, and the horizontal position of the first yarn nozzle 1 is lower than that of the second nozzle 2;
the ordinary yarn 4 directly enters the first yarn nozzle 1 through the yarn guide porcelain eye to form the yarn guide channel 6, the bare spandex yarn sequentially enters the second yarn nozzle 2 through the yarn guide roller and the yarn guide porcelain eye to form the roller channel 5, and a yarn cushion longitudinal angle difference within the range of 15-25 degrees is formed, so that the ordinary yarn is covered on the bare spandex yarn to be represented on the front side (the front side is represented by covering the ordinary yarn on the bare spandex yarn, only the ordinary yarn can be seen on the appearance of the front side of the fabric), the bare spandex yarn is used as the back side of the fabric, and the relative position is kept unchanged;
The yarn conveying path of the bare ammonia yarn comprises: bare ammonia is transmitted to a yarn guide roller 8 from a bare ammonia cylinder 7, and then is subjected to tension control through a constant tension yarn feeder 9.
Further, the constant tension yarn feeder 9 is positioned right above the buffer roller 10, so that the yarn conveying path of bare ammonia yarns is simplified, the friction angle is reduced, and tension fluctuation is stabilized.
Further, the installation positions of the constant tension feeder 9 are: a yarn frame at one side of the flat knitting machine head 12.
Further, the type of the constant tension feeder 9 may be selected as: KTF or EFS constant tension yarn feeder.
Further, the flat knitting machine can be one of a common double-needle bed computerized flat knitting machine, a common multi-needle bed computerized flat knitting machine and a fully-formed computerized flat knitting machine.
Further, the flat knitting machine comprises the following machine models: island essence MACH2XS, machine number E12.
Further, in the design process of the bare ammonia plated flat knitted fabric, the common yarn 4 is adopted as a face yarn, and the bare ammonia is adopted as a ground yarn.
Further, the common yarn is one or more of 48NM/2 wool yarn, common chemical fiber yarn and functional yarn, and the bare spandex yarn is 70D bare spandex yarn.
Further, the first and second nozzles 1 and 2 may be replaced by only one single nozzle having high and low yarn threading holes, as shown in fig. 2, the single nozzle having high and low yarn threading holes includes a high yarn feeding hole 13 and a low yarn feeding hole 14, the high yarn feeding hole 13 is used for feeding spandex yarns, and the low yarn feeding hole 14 is used for feeding common yarns.
Example 2
The embodiment provides a weaving method of a bare ammonia plated flat knitted fabric, which is to realize constant tension yarn feeding of bare ammonia during operation and weaving of a machine head and ensure the smoothness of a cloth cover. The method comprises the following steps:
the method comprises the following steps: bare ammonia 3 enters a constant tension yarn feeder 9 from a bare ammonia cylinder 7 through a yarn guide roller 8, after the tension is balanced by the constant tension yarn feeder 9 (the constant tension yarn feeder has a yarn storage function and plays a certain role in balancing tension, when the yarn feeder detects that the tension is increased, the yarn feeding amount is increased, when the tension is detected to be too small, the yarn feeding is stopped, and the yarn feeding is continued until the tension of the yarn reaches a set value), the bare ammonia is sequentially transmitted into a buffer roller 10 and a buffer arm 11, and the allowance of the bare ammonia is controlled through the up-and-down swinging of the buffer arm 11;
step two: when the flat knitting machine head 12 moves left and right to drive the second yarn nozzle 2 to knit, a part of yarn allowance is generated, the tension of the yarn is reduced, and the constant tension yarn feeder 9 detects the change of the tension and does not feed yarn any more;
step three: the buffer arm 11 absorbs a part of the yarn allowance through springback, so that the yarn tension is properly increased, and the bare ammonia yarn obtains stable tension;
step four: ordinary yarn passes through the second yarn mouth and carries the yarn, is driven by the aircraft nose simultaneously with the first yarn mouth of naked ammonia silk feeding, is got by same knitting hook on the flat-bed machine, because the difference in height configuration of first, second yarn mouth makes naked ammonia silk fill up the yarn longitudinal angle and is greater than ordinary yarn fill up yarn longitudinal angle, ordinary yarn covers on naked ammonia silk during weaving, has guaranteed the relative position of plating to obtain the naked ammonia silk knitting product of plating that the outward appearance effect is good.
As shown in fig. 3, the yarn tension fluctuation of the prior bare ammonia plated flat knitted fabric during yarn feeding can cause the relative position staggering of the face yarn and the ground yarn, which causes the yarn turning phenomenon and generates uneven horizontal stripes on the cloth surface, and fig. 4 shows that the bare ammonia plated flat knitted fabric obtained by the device and the method of the invention has uniform and consistent cloth surface effect of the bare ammonia plated texture.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention will still fall within the protection scope of the technical solution of the present invention.
Claims (4)
1. A weaving method of bare ammonia plating flat knitted fabric is characterized in that a yarn feeding device of the bare ammonia plating flat knitted fabric is applied;
the yarn feeding device of the bare ammonia plated flat knitted fabric comprises: the device comprises a first yarn nozzle, a second yarn nozzle, a bare ammonia tube, a yarn guide roller, a constant tension yarn feeder, a buffer roller, a buffer arm, a flat knitting machine head and a flat knitting machine;
the first yarn nozzle and the second yarn nozzle are arranged on a yarn nozzle rail of the flat knitting machine, the bare ammonia yarn cylinder is arranged on a yarn rack at the upper part of a machine head of the flat knitting machine, the buffer roller and the buffer arm are arranged on one side of the machine head of the flat knitting machine, the constant-tension yarn feeder is arranged on the upper side of the buffer roller, and the yarn guide roller is arranged on one side of the constant-tension yarn feeder;
the yarn guide device comprises a first yarn nozzle, a second yarn nozzle, a yarn guide roller, a yarn guide porcelain eye, a yarn guide roller wheel, a yarn guide porcelain eye, a yarn guide hole porcelain eye, a yarn guide hole, a yarn guide porcelain eye, a porcelain guide hole; the common yarns and the spandex yarns form a yarn padding longitudinal angle difference;
the ordinary yarn directly enters the first yarn nozzle through the yarn guide porcelain eye, and the bare ammonia yarn enters the second yarn nozzle through the yarn guide roller and the yarn guide porcelain eye in sequence;
the range of the yarn padding longitudinal angle difference is as follows: 15-25 °;
the first yarn nozzle and the second yarn nozzle can be replaced by a single yarn nozzle with high and low yarn through holes, the single yarn nozzle with the high and low yarn through holes comprises a high yarn feeding hole and a low yarn feeding hole, the high yarn feeding hole is used for feeding spandex yarns, and the low yarn feeding hole is used for feeding common yarns;
the yarn conveying path of the bare ammonia yarn comprises: bare ammonia is transmitted to a yarn guide roller from a bare ammonia cylinder and then is subjected to tension control by a constant tension yarn feeder;
the constant tension yarn feeder is positioned right above the buffer roller so as to simplify the yarn conveying path of bare ammonia yarns, reduce the friction angle and stabilize the tension fluctuation;
the weaving method of the bare ammonia plating flat knitting fabric comprises the following steps:
the method comprises the following steps: bare ammonia filaments enter a constant tension yarn feeder from a bare ammonia filament barrel through a yarn guide roller, are sequentially transmitted into a buffer roller and a buffer arm after being subjected to tension balance by the constant tension yarn feeder, and the balance of the bare ammonia filaments is controlled through the up-and-down swinging of the buffer arm;
step two: when the flat knitting machine head moves left and right to drive the second yarn nozzle to knit, a part of yarn allowance is generated, the tension of the yarn is reduced, and the constant tension yarn feeder detects the change of the tension and does not feed yarn any more;
step three: the buffer arm absorbs a part of the yarn allowance through springback, so that the yarn tension is increased, and the bare ammonia yarn obtains stable tension;
step four: the ordinary yarn passes through the second yarn mouth and carries the yarn, is driven by the aircraft nose simultaneously with the first yarn mouth of naked ammonia silk feeding, is got by same knitting hook on the flat-bed machine, because naked ammonia silk yarn laying longitudinal angle is greater than ordinary yarn laying longitudinal angle for ordinary yarn covers on naked ammonia silk when weaving, thereby obtains naked ammonia silk plated knitting product.
2. The method for weaving a bare ammonia plated flat knitted fabric according to claim 1, wherein the constant tension yarn feeder is selected from the group consisting of: a KTF constant tension yarn feeder or an EFS constant tension yarn feeder.
3. The method of claim 2, wherein the plain ammonia plated flat knitted fabric is a face yarn and the plain ammonia plated flat knitted fabric is a ground yarn.
4. The method for weaving the bare ammonia plated flat knitted fabric according to claim 3, wherein the plain yarn is one or more of 48NM/2 wool yarn, plain chemical fiber yarn and functional yarn, and the bare ammonia is 70D bare ammonia.
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| CN202010472709.7A CN111607890B (en) | 2020-05-29 | 2020-05-29 | Weaving method of bare ammonia plated flat knitted fabric and yarn feeding device thereof |
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| CN113512810B (en) * | 2021-07-13 | 2022-09-23 | 江南大学 | Yarn tension self-adjusting flat knitting machine yarn nozzle device |
| CN113584704B (en) * | 2021-08-20 | 2022-12-02 | 针知运纺织科技(上海)有限公司 | Weft insertion yarn guide system of computer flat knitting machine |
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| CN111607890A (en) | 2020-09-01 |
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