JP3041581B2 - Method for producing bulky silk spun yarn and production apparatus used therefor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a bulky silk spun yarn which is useful mainly as a raw yarn in the field of outer garments, and a production apparatus used therefor.

[Prior art]

Conventionally, in order to use silk yarn as a raw yarn in the field of outer garment after bulk processing, for example, a wet silk yarn and other yarns (for example, polyester multifilament, woolen yarn) drawn from a cocoon ball in a reeling bath are used. A method in which the raw yarn is passed through a Taslan nozzle together (Japanese Patent Application Laid-Open No. 60-155708), a method in which the raw yarn is passed through a thread rubbing part (for example, knife edge) (Japanese Patent Application Laid-Open No. 2-47323),
Attempts have been made to heat set and untwist to the same degree as twisting in the opposite direction (Japanese Unexamined Patent Publication No. 4-228462).
Further, as a raw yarn in a very small part of the outer garment field, a conventional spun cocoon or a silk spun yarn made from a sub-silkworm has been used as it is.

[0003]

However, among these conventional methods, when raw silk is used as a raw yarn, bulkiness cannot be sufficiently exhibited, and it is used only for a part of thin and light spring and summer products in the field of outer garments. Not. On the other hand, in the conventional method using silk spun yarn as it is, silk has no scale or crimp like wool and has few voids inside the yarn layer, so the woven fabric does not swell as thicker, and it is heavy, flat and hard. Becomes Because of its hardness, the portion that is subject to friction, such as cuffs, is liable to break and become wrinkled. Further, since the yarn has little fuzz and the yarn surface is smooth, the yarn is easily frayed at the cut end of the cloth. Also, the finished product has little roundness due to the use of flat fabric without bulging, and therefore, it is hardly used in the field of outer garments, especially in autumn and winter. In other words, in the silk industry, the stereotype that silk was essentially unsuitable for the field of outer clothing was established. The present invention solves the problems of the above-mentioned conventional methods, breaks down the stereotype, increases the voids inside the yarn layer, and when woven, has a bulge on thick ground, a bulky and soft cashmere touch. The object of the present invention is to obtain a production method capable of efficiently producing a bulky silk spinning suitable for the outer garment field in which the temperature in summer and winter can be controlled by the air possessed by the voids, and to obtain a production apparatus for this bulky silk spinning having a simple structure. And

[0004]

In order to achieve the above object, according to the first aspect of the present invention, suction air is discharged from any surface in a substantially closed chamber, and at least the suction air is discharged into the chamber. The streamline substantially reaches the yarn inlet of the fixed air jet processing device and the cleaning air adjusted so as to be able to blow off the fly wool is jetted. Production of bulky silk spinning by the swirling flow of the blast air supplied to and introduced into the apparatus, obtaining a bulky silk spinning through the yarn outlet of the air jetting processing apparatus, and then being sent out of the chamber and wound up. Solved by the method. According to the invention of claim 2, in the method for producing a bulky silk spun according to claim 1, the original yarn is a single yarn of a spun silk yarn,
A method for producing a bulky silk spun which is either a single or a combination of a twisted yarn and a drawn yarn can be provided. Claim 3
In the method for producing a bulky silk spun according to any one of claims 1 to 2, the feed rate of the raw yarn is set to an overfeed ratio of 5% or less with respect to the delivery speed of the bulky silk spinning. It is preferable to use a method for producing silk spinning. According to a fourth aspect of the present invention, in the method for producing a bulky silk spun according to any one of the first to third aspects, the streamline of the cleaning air has a substantially conical shape having the cleaning air nozzle at the top. It is preferable to use a method for producing a bulky silk spun yarn having an apex angle of 10 to 45 degrees. In the invention of claim 5, claim 1
In the method for producing a bulky silk spun according to any one of the above-described items 1 to 4, it is preferable to use a method for producing a bulky silk spun wherein suction air is sucked from a lower bottom surface of the chamber.

According to the invention of claim 6, an air jet processing apparatus fixed in a substantially sealed chamber and having an opening for a yarn inlet, a yarn outlet and a jet air inlet, and any surface of the chamber A suction air intake port, a cleaning air nozzle disposed at least in the vicinity of the yarn inlet, a yarn extraction section and a bulky silk thread transmission section disposed at opposing positions outside the chamber, and And a take-up unit, wherein a swirling flow can be generated by the compressed air introduced into the injection air inlet, and the suction air inlet is communicated with an air suction source and can be sucked, and The problem has been solved by a bulky silk spinning production apparatus in which a streamline of jet air can be substantially reached near the yarn inlet. According to the seventh aspect of the present invention, in the bulky silk spinning apparatus according to the sixth aspect, it is preferable that the suction air intake port is provided on a lower bottom surface of the chamber. In the invention of claim 8, claims 6 to
7. In the bulky silk spinning production device according to any one of
A plurality of chambers in which an air jet processing device is fixed are arranged adjacent to each other, a lower portion of the side of the adjacent chamber is cut out to allow ventilation, and a bulky silk spinning production device provided with a common suction air inlet. it can.

The raw yarn used in the present invention may be an ordinary silk spun yarn, and may be any one of a single yarn, a twisted yarn and a drawn yarn alone or in combination, and the count is not limited.
Further, another spun yarn, for example, cashmere or the like, may be twisted or drawn to the spun silk yarn. The air jet processing apparatus used in the present invention is, for example, similar to the apparatus described in JP-B-34-8969 and JP-B-35-6684. Any type based on the basic principle of processing can be adopted.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a bulky silk spinning apparatus of the present invention will be described with reference to the drawings. In FIG. 1, a closed box-shaped chamber 16 other than a chamber supply port 21, a chamber discharge port 22, and an inspection port (not shown) is provided.
An air jet processing device 1 is fixedly provided therein. The basic principle of the air jet processing apparatus 1 is, for example, as shown in FIG. That is, in the side view (a), the yarn inlet 2 is provided on the right side by the pipe member 40 embedded in the rectangular body 5, and the yarn outlet 3 is provided on the left side position of the body 5 facing the yarn inlet 2. A yarn inlet path 7 from the yarn inlet 2 and a yarn outlet path 8 from the yarn outlet 3 extend concentrically inside the body 5,
Thread entrance path 7 and thread exit path 8 engraved inside body 5
A yarn outlet path 8 and a yarn inlet path 7 are respectively provided continuously across the ring-shaped air swirl groove 6 having a diameter larger than that of the cross section of FIG. A small hole 41 is formed. (In the following description, the left side is the front and the right side is the back). On the other hand, the injection air passage 9 extends vertically from the injection air inlet 4 formed in the lower surface of the body 5 and communicates with the lower end of the air swirl groove 6.
The front end of the injection air passage 9 is slightly directed forward in front of the lower end of the air swirl groove 6. An injection air transport pipe 10 having a terminal connected to a compressed air source such as a compressor from the outside of the chamber 16 extends and communicates with the injection air inlet 4.

A cleaning air nozzle 11 is provided in the chamber 16 below the yarn inlet 2, and a cleaning air transport pipe 12 connected to a compressed air source such as a compressor extends from the outside of the chamber 16 to a terminal. It is connected to the nozzle 11. A cock 13 for adjusting the amount of air is interposed in the path of the cleaning air transport pipe 12. Chamber 1
A suction air inlet 14 is formed in the lower bottom surface of the chamber 6, and communicates with a suction air transport pipe 15 in which an air suction source such as a fan is connected to a terminal outside the chamber 16.

Outside the chamber 16, a raw yarn 17 made of a spun silk yarn passes through a winding tube 18, a guide 19, and a raw yarn pulling roller 20 as a raw yarn pulling section 30, and then the raw material of the chamber 1 is removed.
6 can be introduced into the chamber 16 from a chamber supply port 21 formed in the upper surface. A chamber outlet 22 is bored in the side surface of the chamber 16, and a bulky silk spinning 25 that has come out of the chamber 16 from the chamber outlet 22 is
Bulky silk spinning delivery roller 23 as a bulky silk spinning delivery unit
In addition, the cheese can be wound around the cheese 27 by the rotation of the winding drum 26 via the guide 24 and the grooved winding drum 26 as the winding section 31. It is preferable to use a surface-plated metal material or a ceramic coating material for the chamber supply port 21 and the chamber discharge port 22 in order to maintain abrasion resistance with the raw yarn 17 and the bulky silk spun yarn 25 passing therethrough.

The air jet processing apparatus 1 is not limited to the one described above. The positions of the yarn drawing-out unit 30, the bulky silk spinning sending-out unit and the winding unit 31 may be upside down. Although the suction air inlet 14 may be provided on the side surface of the chamber 16, the suction efficiency is best when it is provided on the lower bottom surface as shown in FIG. Further, the plurality of chambers 16 are connected by fixing or sharing the side surfaces of the adjacent chambers 16, and the lower portions of the side surfaces of the adjacent chambers 16 are cut out to allow ventilation, and the common suction air intake for the plurality of chambers 16 is provided. An inlet 14 may be provided, but in this case, it is desirable to share the two chambers 16 in terms of suction balance.

Next, an embodiment of a method for producing a bulky silk spun yarn of the present invention will be described with reference to the drawings. In FIGS. 1 and 2, the raw yarn 1 wound around a take-up tube 18 outside the chamber 16 is shown.
7 is unwound by the drive of the yarn drawing roller 20, passes through the guide 19, the yarn drawing roller 20, and moves from the chamber supply port 21 to the chamber 16 in the yarn supply direction X.
Air injection processing device 1
From the yarn inlet 2 of the body 5 to the yarn inlet path 7, the air swirl groove 6,
After passing through the yarn exit path 8 and the yarn exit 3, the bulk is processed, and immediately after leaving the yarn exit 3, the course is bent at substantially a right angle. The inside of the chamber 16 is driven by the bulky silk spinning delivery roller 23 outside the chamber 16. Although it proceeds, the original yarn drawing roller 20 is higher than the surface speed of the bulky silk spinning delivery roller 23.
Has a slightly higher surface speed, i.e., an overfeed (preferably, the overfeed ratio is preferably 5% or less, and particularly preferably about 2.5%), so that the yarn relaxes and voids, And the bulky silk spinning 25 is obtained. If the overfeed ratio is higher than this, an extra loop is generated, the appearance of a spun yarn having a uniform thickness is impaired and becomes unstable, the yarn foot becomes short, and the productivity is reduced.

After the bulky silk spinning 25 advances in the chamber 16, the bulky silk spinning delivery roller 23 is driven out of the chamber 16 through the chamber outlet 22 by driving the bulky silk spinning delivery roller 23, and the bulky silk spinning delivery is performed in the bulky silk spinning discharge direction Y. Roller 2
3. The cheese is wound around the cheese 27 by rotation and traverse of the winding drum 26 via the guide 24. In the bulk processing with the air jet processing apparatus 1, the jet air transport pipe 10 connected to the terminal from the outside of the chamber 16 with the compressed air source is connected to the jet air inlet 4 on the lower surface of the body 5, and is introduced in the jet air transport direction Q. The compressed air that has flown from the injection air inlet 4 through the injection air passage 9 to the lower end of the air swirl groove 6 via the injection air passage 9 and is introduced into the yarn inlet passage 7 from the yarn inlet 2 as a swirling flow directed forward.
7, and then, immediately after exiting from the body 5 together with the airflow from the yarn outlet 3 through the yarn outlet path 8 through the air swirl groove 6, the course is bent at a substantially right angle, and the feed is over-fed and the bulky silk spinning 25 is formed. Become.

On the other hand, a cleaning air nozzle 11 provided at a position below the yarn inlet 2 is connected to a cleaning air transport pipe 12 connected to a terminal of a compressed air from the outside of the chamber 16 to the outside. During operation of the air jetting apparatus 1, streamlines are adjusted so as to be substantially reachable at least in the vicinity of the yarn inlet 2 and are jetted as cleaning air in the transport direction P. In FIG. 3, the adjustment of the cleaning air is performed by selecting and combining the pressure and / or flow rate of the compressed air, the distance d from the yarn inlet 2 to the tip of the cleaning air nozzle 11, the shape of the cleaning air nozzle 11, and the like. However, as a measure of adjustment, a streamline of substantially conical cleaning air having the cleaning air nozzle 11 at the apex reaches the vicinity of the yarn inlet 2, and at least during the operation of the air jetting device 1, the streamline is at least at the yarn inlet 2. It is necessary to blow off the short fiber waste and flying cotton such as flying cotton which may be stagnant and accumulated with the passage of time and drop it below the chamber 16. Unless the fluff that is actively generated is blown off, the peculiar fly generated by the processing of the bulky silk spinning stagnates and accumulates in the vicinity of the yarn inlet 2 easily and in a short time due to the stickiness, so that the operation can be continued. Impossible. The streamline of the conical cleaning air may be any range as long as the generated fly waste can be blown off.
Is set to 10 degrees to 45 degrees, preferably 15 degrees to 40 degrees.

At the same time, a suction air transport pipe 15, which is connected to an air suction source at a terminal outside the chamber 16, communicates with the suction air inlet 14 on the lower bottom surface of the chamber 16. Suction air is sucked together with the suction air together with the suction air, and the fly waste actively blown off by the cleaning air nozzle 11 and the fly waste generated during the passage of the original yarn 17 and the bulky silk spinning 25. It is moved from the inlet 14 in the suction air transport direction R and taken out of the chamber 16 and stored in a dust collector provided with a filter, a bag filter, etc., connected to an air suction source of the terminal. The air balance in the chamber 16 is determined by the input “injection air from the injection air inlet 4 + the cleaning air from the cleaning air nozzle 11”, the output “suction air from the suction air intake 14”, and the “yarn inlet 21”. And the leakage from the yarn outlet 22 ", and usually, the suction air is slightly increased to prevent the dirty air in the chamber 16 from leaking directly to the outside.

[0015]

【Example】

[Example] Using a spun silk yarn having a count of EC36 / 2 as a raw yarn, using the above-described air jet processing apparatus 1, a surface speed of a bulky silk spinning delivery roller was 150 m / min, and a pressure of jet air was 4.5.
The bulky silk spun yarn of the example was obtained under the conditions of kg / cm ³ and an overfeed ratio of 2.5%. At this time, the chamber is 110
Two 100 cm ³ box-shaped ones are provided adjacent to each other, one air jet processing device is installed for each, and d is inserted from the yarn inlet.
= 6 cm from the upwardly directed cleaning air nozzle, the conical apex angle θ = 25 degrees, and pressurized air at a pressure of 2 kg / cm ³ , the streamline of the substantially conical cleaning air reaches near the yarn inlet. constantly injected as, ventable by cutting the lower side of the adjacent chamber and to provide a suction air inlet shared, fly waste or the like air blasting device one per 2m ³ / min of air at all times suction to Was discharged out of the chamber. [Comparative Example] In order to compare with the bulky silk spinning of the above example,
A spun silk yarn of count EC36 / 2 used as a raw yarn was used as a comparative example. Using the bulky silk spun yarn of the example and the silk spun yarn of the comparative example as the warp and the weft, respectively, a 3/3 right twill woven fabric was woven, and the mechanical characteristics were measured by the KES method. It is shown in FIG. In Table 1, TO means weighted 0.
The cloth thickness mm when 5 g / cm ² is added is shown, and the TM is the cloth thickness mm when a load of 50 g / cm ² is added.

[0016]

[Table 1]

From Table 1, it can be seen that the weight of the embodiment is 3.1% lighter than that of the comparative example, and that the thickness of the compression characteristics is 5.3% thicker under the TO condition and 8.5% under the TM condition. thick. Further, in the comparison of weight per unit thickness, TO conditions: Comparative example 192 g / 0.764 mm = 251.3 g / mm Example 186 g / 0.8045 mm = 231.2 g / mm Therefore, the example is different from the comparative example. 8.0% lighter. TM conditions: Comparative example 192 g / 0.505 mm = 380.2 g / mm Example 186 g / 0.548 mm = 339.4 g / mm Therefore, the example is 10.7% lighter than the comparative example, and the bulk of the example is higher than the above. Compared with the silk spun yarn fabric of the comparative example, the silk spun yarn fabric has a bulky and soft cashmere touch feeling, has a remarkable volume feeling, and can control the summer and winter temperature with the air with a large amount of voids It was suitable for outer garments.

Next, suction air and cleaning air are used together during the production of the bulky silk yarn of the embodiment. In order to see the effect, the suction air and / or the cleaning air are stopped and the operation state is compared. The results are shown in Table 2. In Table 2,
“〇” indicates evaluation of “good” and “×” indicates evaluation of “bad”, and the number indicates strength.

[0019]

[Table 2]

From Table 2, it can be seen that the combined use of suction air and cleaning air is extremely effective, and the bulky silk spinning apparatus can be operated continuously for a long time, whereas when either is not used, the operation is continued in a short time. Becomes impossible.

[0021]

According to the production method of the present invention, the voids inside the yarn layer are increased, and when the fabric is made into a woven fabric, it has a swelling on thick ground,
With a bulky and soft cashmere touch feel, bulky silk spinning, which is not available in conventional yarns and is suitable for the field of outer garments in which the temperature in summer and winter can be controlled by the air held in the voids, can be efficiently obtained. Further, according to the production apparatus of the present invention, a bulky silk spinning suitable for the field of outer garments can be obtained by an apparatus having a simple structure.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view showing one example of an apparatus for producing a bulky silk spun yarn of the present invention.

2A is a side view, FIG. 2B is a front view, FIG. 1C is a rear view, and FIG.

FIG. 3 is a schematic explanatory view showing a positional relationship of an example of a cleaning air nozzle used in the bulky silk spinning apparatus of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air injection processing apparatus 2 Thread inlet 3 Thread outlet 4 Injection air inlet 5 Body 6 Air swirl groove 7 Thread inlet path 8 Thread outlet path 9 Injection air path 10 Injection air transport pipe 11 Cleaning air nozzle 12 Cleaning air transport pipe 13 Cock 14 Suction air inlet 15 Suction air transport pipe 16 Chamber 17 Yarn 18 Winding pipe 19, 24 Guide 20 Yarn take-out roller 21 Chamber supply port 22 Chamber outlet 23 Bulky silk spinning delivery roller 25 Bulky silk spinning 26 rolls Take-up drum 27 Cheese 30 Yarn take-out part 31 Wind-up part 40 Pipe material 41 Injection air inlet small hole d Distance P Cleaning air transport direction Q Injection air transport direction R Suction air transport direction X Raw yarn supply direction Y Bulky silk spinning discharge Direction θ apex angle

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Claims (8)

(57) [Claims] 1. Suction air is discharged from any surface in a substantially sealed chamber, and a streamline substantially reaches at least near a yarn inlet of an air jet processing device fixed in the chamber. While injecting the cleaning air adjusted to be able to blow off the cotton wool, the raw yarn composed of the spun silk yarn is supplied to the air injection processing device, and the swirling flow of the injection air introduced thereinto performs bulk processing to perform the air injection. A method for producing a bulky silk spun, wherein the bulky silk spinning is obtained from a yarn outlet of a processing device, and then sent out of the chamber and wound. 2. The method for producing a bulky silk spun yarn according to claim 1, wherein the original yarn is any one of a single spun silk yarn, a twisted yarn and a drawn yarn, or a combination thereof. Manufacturing method of spinning. 3. The method for producing a bulky silk spun according to claim 1, wherein the feed rate of the raw yarn is set to an overfeed ratio of 5% or less with respect to the delivery speed of the bulky silk spinning. Method for producing bulky silk spun. 4. The method for producing a bulky silk spun yarn according to claim 1, wherein the streamline of the cleaning air has a conical shape having the apex of the cleaning air nozzle at the apex, and a vertex angle of 10 degrees. A method for producing a bulky silk spun yarn, which is in the range of -45 degrees. 5. The method for producing a bulky silk spun according to claim 1, wherein suction air is sucked from a lower bottom surface of the chamber. 6. An air jet processing apparatus fixed in a substantially closed chamber and having openings for a yarn inlet, a yarn outlet and a blast air inlet on a surface thereof, and a suction drilled on any surface of the chamber. An air intake, and a cleaning air nozzle disposed at least toward the vicinity of the yarn inlet;
It comprises a yarn drawing-out section, a bulky silk spinning sending-out section and a winding section arranged at a facing position outside the chamber, and a swirling flow can be generated by the compressed air introduced into the injection air inlet,
The suction air inlet is communicated with an air suction source so that suction is possible, and a streamline of jet air from the cleaning air nozzle can substantially reach near the yarn inlet. Bulky silk spinning production equipment. 7. The bulk silk spinning apparatus according to claim 6, wherein a suction air inlet is provided on a lower bottom surface of the chamber. 8. The bulky silk spinning apparatus according to claim 6, wherein a plurality of chambers in which the air jet processing apparatus is fixed are arranged adjacent to each other, and the lower part of the side surface of the adjacent chamber is cut off. A bulky silk spinning production apparatus characterized in that it is chipped and ventilated and a common suction air inlet is provided.