JPH01118629A - Method for feeding fiber into spinning device - Google Patents

Abstract

PURPOSE:To readily inert fiber bundle into a rotary pipe, by once winding the fiber bundle round a guide wire set at an admission passageway of the fiber bundle in front of an fiber bundle inlet of a rotary pipe, guiding the fiber yarn to the admission passageway of the fiber bundle and introducing to the rotary pipe. CONSTITUTION:In introducing fiber bundle S to a fiber bundle inlet 17 to a rotary pipe 15, the fiber bundle being twisted and rotated by jet stream from a spray nozzle 33 is wound round a guide wire 31 opposingly set at an fiber bundle entrance and then sucked in the rotary pipe 15. The progress center of the fiber bundle is coincident with the center of the fiber bundle inlet or the rotary pipe and the fiber bundle can be placed on an air stream to the rotary pipe and inserted into the rotary pipe.

Description

[Detailed description of the invention]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for introducing a fiber bundle into a spinning device for producing a spun yarn by heating an untwisted fiber bundle drafted by a draft Hffi. K. Prior Art Pneumatic spinning machines are capable of spinning at speeds several times faster than ring-type spinning machines, and various devices have been developed. The system made with air spinning gA grip is core 1! This is a binding spinning system in which other fibers are spirally wound around the fibers, but this spinning machine uses two nozzles to create the above-mentioned wrapping, but because it uses two nozzles, it consumes less compressed air. The amount is large and the energy cost is high. The present applicant has developed the following device as another example of the above-mentioned binding spinning device. That is, the spinning device installed subsequent to the draft device has an air swirling chamber built into the casing, a rotating pipe with a 41n bundle inlet opened in the chamber, and a TA fiber bundle inlet at the tip of the rotating pipe. A fiber bundle is introduced from the fiber bundle, and by jetting compressed air from a compressed air injection nozzle provided near the fiber bundle introduction port, the fiber ends at the outer periphery of the fiber bundle are wound around the outer periphery of the core fibers of the fiber bundle, thereby forming a bound spun yarn. The company has previously filed an application for a device to obtain [Problems to be solved by the invention] In the above device, since the fiber bundle inlet of the rotating vibrator is located inside the casing and its diameter is small, when starting spinning, the fiber bundle inlet of the rotating vibrator is It is not easy to insert the fiber bundle that has been drafted into the An object of the present invention is to facilitate the insertion of a fiber bundle into the rotating vibrator. Means for Solving Problem K] In a rotating vibrator which has a fiber bundle inlet opening in a casing in which an air swirling chamber is formed, the fiber bundle that leads to the air swirling chamber enters toward the i string bundle inlet. Swirling compressed air is injected from an injection nozzle that opens diagonally into the path, and the compressed air is used to guide the fiber bundle from the front roller of the drafting device into the casing through the fiber bundle entrance path and pull it out from the casing through the rotating vibrator. When applying force to the string bundle and winding the 41 fibers located at the center of the PA fiber bundle and the 41 fibers located roughly on the outer periphery to form a spun yarn, the fiber bundle entrance path in front of the fiber bundle inlet of the rotating vibrator is used. After the fiber bundle is once entangled with a guide wire provided in the same direction as the fiber bundle introduction direction, the fiber bundle is guided to the $1 Ito introduction port by the guide wire and introduced into the rotating vibrator.

[For production]

When the fiber bundle coming out of the front roller is sent to the string bundle inlet of the rotating vibrator by swirling compressed air, the fibers that make up the fiber bundle cling to the guide pin and form a rod shape around the guide pin. Since the fiber bundle introduction direction of the fiber bundle introduction port and the guide pin are provided in the same direction, the fiber bundle that leaves the guide pin remains at the fiber bundle introduction port. It will be introduced in

【Example】

An example of an apparatus for carrying out the method of the present invention will be described below with reference to the drawings. In FIG. 5, a non-twisted worsted roving, that is, a fiber bundle S, wound on a bobbin B is carried out by a drafting device 5 consisting of each pair of rollers: a back roller 1, a middle roller 3 having an apron 2, and a front roller 4. The yarn is introduced into the spinning device 6 to become a spun yarn Y, which is then pulled out by a delivery roller 7, rotated by a friction roller 8, and turned into a package P.
It is wound up. In the following description of the spinning device 6, the front refers to the front roller side, and the rear refers to the delivery roller side. The structure of the spinning device 6 is shown in FIG. In the figure, a dashed line indicates a running path of the fiber bundle S or the spun yarn Y. A hollow cylindrical rotary vibe receiving member 12 is fixed to the frame 11 by appropriate means, and a bearing 13.
A rotating vibrator 15 is rotatably supported via 14. A fiber bundle passage 16 is formed through the center of the rotating vibe 15, and the inner diameter of the fiber bundle introduction port 17 at the end of the fiber bundle passage 16 is the smallest, and the diameter increases at the middle part. Further, the outer diameter of the in-bundle inlet 17 of the rotating vibrator 15 is sufficiently small, and the outer diameter of the portion following the fiber bundle inlet 17 is the same diameter in a certain section, and the diameter increases successively after the same diameter portion. It forms a conical portion 18 and is connected to a rotary plate 19. A pulley 20 is attached to the outer periphery of the rotary vibrator 15, and the rotary vibrator 15 rotates at high speed together with the pulley 20 as a drive belt 21 is wound around the outer periphery of the pulley 20 and is driven to run by a motor (not shown). At the end of the rotating vibe receiving member 12, the first fiber bundle is introduced n17.
A casing 22 covering the two conical portions 181 and the rotating plate 19 is fixed. The casing 22 has a pair of split molds 2 at the front and back.
3.24, both of which are screwed together. Fiber bundle introduction port 17° conical portion 1 of the casing 22
8. And the part that covers the rotating plate 19 is the fiber bundle introduction slot 17.
The vicinity is a small-diameter cylindrical air swirling chamber 25, and the portion following this air swirling chamber 25 is a conical air escape chamber 26 opened at a large angle. Further, in front of the small-diameter air swirling chamber 25 is a fiber bundle entrance path 27 having a cylindrical shape with a slightly larger diameter than the tip end diameter of the rotating vibrator 15. The conical air escape chamber 26
An annular hollow chamber 28 and an air escape hole 29 in a tangential direction continuous with the hollow chamber 28 are formed on the outer periphery of the annular hollow chamber 28 , and an air suction vibrator 30 is connected to the air escape hole 29 . A guide wire 31 located at the center of the fiber bundle entry path 27 and extending in the direction of entry of the il fiber bundle is provided with its end fixed to the casing 23. The tip of the guide wire 31 faces the an bundle introduction port 17. The fiber bundle passage 16 of the rotating vibrator 15 is
and the center of each hollow part of the casing 22 are both located on the same straight line that coincides with the travel path of the S string bundle S, and
The arrangement is such that the distance between the bundle introduction port 17 and the nip point N of the front roller 4 is shorter than the average length of the 1 m fibers constituting the fiber bundle S. A hollow air chamber 32 is formed inside the casing 23, and the air chamber 32 extends in the direction of the fiber bundle introduction hole 17 of the rotating vibrator 15 and in the tangential direction with respect to the air swirling chamber 25. Four air injection nozzles 33 are formed, and an air hose 35 is connected to the air chamber 32 through a guide hole 34. The direction of the nozzle 33 is set to be the same as the direction of rotation of the rotating vibrator 15. After the compressed air supplied from the air hose 35 flows into the air chamber 32 , it is ejected from the nozzle 33 into the air swirling chamber 25 , and flows into the il ITO inlet 1 of the rotating vibrator 15 .
A high-speed swirling air flow is generated in the vicinity of 7. After this swirling air flow swirls inside the air swirling chamber 25, it diffuses outward while gently swirling inside the air escape chamber 26, and is guided toward the air escape hole 29 and discharged. At the same time, the swirling airflow generates a suction airflow that flows into the hollow portion of the casing 22 from the nip point N of the front roller 4. Next up is the spinning bag! ! ! The method for producing spun yarn according to No. 6 will be explained. In Figure 4, draft equipment! l! drafted at 5,
The Alto bundle S sent out from the front roller 4 is directed into the fiber bundle entrance path 27 from the air jet nozzle 33 that touches the inside of the hollow part of the casing 22, and is directed from the front roller 4 side to the fiber bundle entrance path 27, which is generated by the jet flow blown out. The fiber bundle is drawn into the spinning vA device 6 by the suction air flow that enters the fiber bundle, passes through the fiber bundle passage 24 of the rotating vibrator 19, and is pulled out by the delivery roller 7. In the above process, the fiber bundle S entering the fiber bundle entrance path 27
are twisted in the same direction by the action of a compressed air flow jetted from the air injection nozzle 33 near the fiber bundle introduction port 17 of the rotating vibrator 15 and swirling in the direction of the arrow 36, and a tip is formed near the fiber bundle introduction port 17. guide wire 3 positioning
1, the guide wire is attached to the guide wire by the jet flow from the air injection nozzle 33 and the suction by the suction device (not shown) that is brought into contact with the end of the fiber passage 16 at the rear end position of the rotating vibrator 15 only during threading. 31 to the #i fiber bundle path 16 of the rotating vibrator 15 and threading is performed. The fiber bundle S threaded through the spinning device 6 is passed through the delivery roller 7 and then spun by the spinning V4 device 6 operating at high speed. When the fiber bundle S is passed through the rotary vibrator 15 and operated at high speed, the fiber bundle S is slightly twisted when entering the RA miscellaneous cord bundle inlet 17 of the rotary vibrator 15 by the jet from the air injection nozzle 33. Since the #a fibers located at the center of the fiber bundle S are not directly exposed to the air flow, they are untwisted to their original state at a position past the fiber bundle introduction port 17. On the other hand, the fibers f1 located at or near the outer periphery of the 4I miscellaneous bundle S are directly exposed to the air flow and receive a force to separate them from the fiber bundle S;
When the tip of the fiber S is at the fiber bundle introduction port 17,
The tips are not easily separated because they are subjected to the above-mentioned false twist, and the rear ends of the m-fibers are either nipped by the front roller 4 as shown in the first figure or are located far from the air injection nozzle 33. Since it is not affected by the air flow much, it has not yet separated. Subsequently, when the rear end of the IIi fiber 1 detaches from the front roller 4 and approaches the air injection nozzle 33, the nozzle 3
It is separated from the fiber bundle S under the strong force of the air flow from 3. At this time, the tip of the fiber f1 is partially subjected to false twisting, and since it is inserted into the rotating vibrator 15 where the effect of air flow is small, the fiber rear end 1a does not separate and is hardly subjected to the effect of false twisting.
only is separated from the fiber bundle S. Separated an rear end f1
Due to the action of the air flow, a is wrapped around the inlet of the rotating vibrator 15 once or multiple times, and then wrapped around the conical portion 18 a little, and then guided by the rotating plate 19 and extended outward. Next, the fiber bundle S travels to the left, and the rotating vibrator 15 rotates in the direction of the arrow 37, so that the rear end f1 of the above-mentioned 11f1
a is gradually drawn out while rotating around the fiber bundle S. As a result, the Pa fibers f1 are spirally wound around the fiber bundle S, and the fiber bundle S becomes a spun yarn Y and passes through the fiber bundle passage 16. In the manufacturing process of the yarn Y described above, the A fibers f1 are separated from the entire outer periphery of the fiber bundle S, and as the fibers f1 are separated, the Pa fibers f1 located inside thereof are exposed to the air flow and are further separated. Therefore, a large number of fibers f1 are successively separated. These separated fibers f1 are evenly distributed around the outer circumference of the rotating pipe 15 and the conical portion 18,
It is wrapped evenly around the core fiber. The winding direction of these wound fibers f1 is determined by the rotation direction of the rotary pipe 15, and when the rotary pipe 15 rotates in the direction of arrow 37, it is wound in the Z-twist direction, and when it rotates in the opposite direction, it is wound in the S-twist direction. . The swirling direction of the air flow from the air injection nozzle 33 is set to the rotation direction of the rotary pipe 15 so as not to disturb the winding direction of the above-mentioned wrapped fiber f1 and to prevent the tip of the fiber from being separated due to the swirling of the rear end of the fiber. Preferably, they are set in the same direction. FIG. 6 shows the appearance of the spun yarn Y produced through the above spinning process. The characteristic of this spun yarn Y is that it has a basic structure in which the wrapped fiber f1 is spirally wound around the core fiber "2", and both of these fibers f'1, f2.In particular, the arrangement of the wrapped 1% l fiber f1 The number of wound fibers f1 and the winding angle are uniform over the length direction of the yarn Y, so there is little unevenness in the thickness of the yarn, and there are also fewer fluffs and loops of fluff.

【Effect of the invention】

In the method of the present invention, when the IA bundle is introduced into the m#f1 bundle inlet of the rotating pipe, the fiber bundle twisted by the jet flow is transferred to the guide wire opposite to the fiber bundle inlet. After the fibers are tied together, they are sucked into the rotating pipe, so the center of movement of the 41i1 bundle coincides with the center of the fiber bundle introduction port of the rotating pipe, causing the 11 fibers to flow into the rotating pipe. It can be inserted by placing it on the thread, eliminating the difficulty of threading.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional side view of a spinning machine for carrying out the method of the present invention, Fig. 2 is a front view of the spinning machine with the casing partially removed, Fig. 3 is a front view of the nozzle section, and Fig. 4 is a front view of the spinning machine with the casing partially removed. The figure is an explanatory diagram showing the spinning process of spun yarn, FIG. 5 is an overall schematic diagram of a spinning machine using the present invention, and FIG. 6 is a diagram showing the appearance of the manufactured spun yarn. 4...Front roller, 5...Draft device. 15...Rotating pipe, 17...Il fiber bundle entrance. 22, 23.24...Casing, 25...Air swirling chamber. 26... Air escape chamber, 27... Fiber entry path. 31... Guide wire, 33... Injection nozzle. fl, f2...fiber, S...fiber bundle. Y...Spun yarn patent applicant Murata Kikai Co., Ltd. Agent Patent attorney Katsu Ohno Agent Patent attorney Reiko Ohno Agent Patent attorney Yanosuke Ohno

Claims (1)

[Claims] Pressurized air of swirling air is directed toward the fiber bundle inlet of a rotating pipe that has a fiber bundle inlet opened in a casing forming an air swirling chamber from an injection nozzle that opens diagonally into the fiber bundle entrance path leading to the air swirling chamber. is injected, and the compressed air urges the fiber bundle that is guided from the front roller of the drafting device through the fiber bundle entrance path into the casing, and is pulled out from the inside of the casing via the rotating pipe, so that it reaches the center of the fiber bundle. When winding the fibers located on the outer periphery around the existing fibers to form a spun yarn, the fiber bundle is passed through a guide wire provided in the fiber bundle entrance path in front of the fiber bundle inlet of the rotating pipe in the same direction as the fiber bundle introduction direction. 1. A method for introducing a fiber bundle into a spinning device, which comprises once entwining the fiber bundle, guiding the fiber bundle to a fiber bundle introduction port using the guide wire, and introducing the fiber bundle into a rotating pipe.