JPH0551971U - Pneumatic spinning equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] In an air spinning device, the entrained airflow from a front roller that rotates at high speed is positively used to increase the number of wound fibers and spun a yarn having higher strength. [Structure] An air spinning nozzle is arranged next to a draft device, a groove G inclined with respect to its axis is formed on the entire circumference of a front bottom roller 4a, and an air spinning nozzle 6a is provided with A balloon controller 12 having a flat inlet 12a whose center is displaced from the center in the fiber bundle diffusion direction is inserted.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a pneumatic bound yarn spinning device for directly producing yarn from a sliver by an air spinning nozzle.

[0002]

[Prior Art]

 The air spinning device as shown in FIG. 1, that is, the air spinning device in which a twisting device 8 composed of two air injection nozzles 6 and 7 that eject swirling air streams in different directions next to the draft device 5 is arranged, It is already widely known.

[0003]

[Problems to be solved by the device]

 The conventional pneumatic spinning equipment has a high productivity of spinning at about 15 times as fast as a ring spinning machine (180 to 300 m / min), a wide spinning range (Ne10 to Ne80), omission of steps, and energy saving. Although it has excellent features such as, it is not yet satisfactory in terms of yarn strength.

An object of the present invention is to provide an air spinning device that can positively utilize an entrained airflow from a front roller that rotates at a high speed to increase the number of wound fibers and spun a yarn having higher strength. I am trying.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, in the pneumatic spinning device of the present invention, the pneumatic spinning nozzle is arranged next to the draft device, and the front roller has a groove inclined with respect to its axis all around. A balloon controller having a flat inlet whose center is deviated from the center in the fiber bundle diffusion direction is attached to the inlet of the air spinning nozzle.

[0006]

[Operation] In the pneumatic spinning device configured as described above, the fiber bundle rides on the accompanying airflow that flows along the inclined groove of the bottom roller from the front roller nip portion to one side in the axial direction of the front roller. After being passed through the nip part, it is drafted and guided from the inlet of the balloon controller to the inlet of the air spinning nozzle, where it is wound by the rotation of the central fiber in the yarn forming process.

[0007]

【Example】

 First, with reference to FIG. 1 and FIG. 2, an overview of the entire pneumatic spinning device will be described.

This pneumatic spinning device includes a draft device 5 including a back roller 1, a middle roller 3 equipped with an apron 2 and a front roller 4, and two drafting devices that eject swirling airflows in different directions. The twisting device 8 includes air injection nozzles 6 and 7, and a pair of delivery rollers 9.

In this air spinning device, the staple fiber bundle S 2 drawn out from the can is introduced between the roller pairs of the drafting device 5 and is sent out to be drafted to a predetermined thickness, and the first air jet nozzle 6 When introduced, the jetted swirling airflow causes a balloon to be generated in the staple fiber bundle S, and then the jetting swirling airflow in the opposite direction of the second air jet nozzle 7 imparts a twist to the staple fiber bundle S. Thus, the spun yarn Y having the appearance shown in FIG. 2 is formed, drawn out by the pair of delivery rollers 9, and wound into the package P.

Looking at the manufacturing process of this spun yarn Y in more detail, a substantial portion of the fiber bundle discharged from the front roller 4 is false-twisted by the second air injection nozzle 7 (the twist is the front roller inlet). However, some of the fibers are still gripped by the front roller 4 at the rear end and free at the front end by the balloon of the first air injection nozzle 6 in the direction opposite to the false twist. Has become. The fibers are wound around the convergent fiber bundle in the direction opposite to the false twist by the action of the swirling air flow jetted from the balloon and the first air jet nozzle 6. The wound fiber passes through the second air injection nozzle 7 and is untwisted, and is wound more and more strongly with a sufficient number of windings. As shown in FIG. 2, the yarn thus produced is a bundled spun yarn composed of parallel core fibers F ₁ and wound fibers F ₂ wrapped around the core fibers F ₁ .

As shown in FIG. 3, the pneumatic spinning device of the present invention further includes, as a front bottom roller 4a constituting the front roller 4, a left-hand screw direction or a right-hand screw direction (the left-hand screw direction in FIG. 3). A sloping groove G is formed all around, and a balloon controller 10 is attached to the inlet 6a of the first air injection nozzle 6. The roller forming the inclined groove G may be a front top roller or both. In addition, 6b is an air ejection hole of the 1st air injection nozzle 6 which faced the tangential direction and the downstream side.

The accompanying airflow that flows along the peripheral surface of each roller of the front roller 4 flows from the contact portion between the top roller and the bottom roller along the inclined groove G of the bottom roller 4a. Therefore, as shown in FIG. 3, the fiber bundle S in the draft spreads to one side and is drafted on the side of the first air injection nozzle 6 along with the accompanying air flow.

The balloon controller 10 includes an inlet portion 10a having a flat opening. The inlet part 10a is oriented in the axial direction of the bottom roller 4a having the inclined groove G, and the balloon controller 10 is placed so as to open at a position for receiving the fiber bundle S spread and sent out from the bottom roller 4a. Therefore, the center of the inlet portion 10a is displaced from the inlet 6a of the first air injection nozzle 6 in the roller axial direction.

The inclination direction of the groove G of the bottom front roller 4a, in other words, the diffusion direction of the fiber bundle should be changed depending on the twisting direction of the fiber bundle immediately after passing through the front roller. When converged by S twist, it is preferable to incline in the direction (left-hand screw direction) shown in FIG. The twist of the yarn finally becomes a Z twist. On the contrary, in the case of converging with Z twist, it is preferable to incline in the direction opposite to the direction shown in FIG. 3 (right-hand screw direction). The twist of the yarn finally becomes an S twist. This relationship will be further clarified by FIG. In this way, the winding of the wound fiber around the core fiber becomes easy.

[0015]

[Effect of the device]

 Since the present invention is configured as described above, it has the following effects.

That is, the fibers spread to one side by the accompanying airflow in a certain direction flowing by the inclined groove formed in the front roller are received by the balloon controller having the guide portion and twisted by the action of the air spinning nozzle. It is possible to reliably supply a predetermined amount of the fiber to be the core fiber from a certain direction to form the wound fiber, and thus, it is possible to stabilize the spinnability and increase the yarn strength.

[Brief description of drawings]

FIG. 1 is a schematic side view of a pneumatic spinning device.

FIG. 2 is an external view of spun yarn spun by an air spinning device.

FIG. 3 is a view in the vicinity of an air spinning nozzle inlet of the air spinning device of the present invention.

FIG. 4 is a view of a balloon controller used in the pneumatic spinning device of the present invention as seen from the inlet direction.

FIG. 5 is a perspective view of a main part of the pneumatic spinning device of the present invention.

[Explanation of symbols]

 4 Front Roller 4a Front Bottom Roller 5 Draft Device 6 First Air Injection Nozzle 6a First Air Injection Nozzle Inlet 7 Second Air Injection Nozzle 10 Balloon Controller 10a Balloon Controller Inlet G Inclined Groove S Fiber Bundle

Claims (1)

[Scope of utility model registration request] 1. An air spinning nozzle is arranged next to a draft device, and a groove inclined with respect to its axis is formed on the entire circumference of a front roller, and the air spinning nozzle inlet is provided with the groove. An air spinning device in which a balloon controller having a flat inlet whose center is displaced from the center in the fiber bundle diffusion direction is attached.