JPH03241018A - Spinning equipment - Google Patents

Abstract

PURPOSE:To provide a spinning equipment capable of giving high-strength real-twist yarns of good appearance, so designed that a guide member support with a gap in a nozzle block to act swirling air stream on drafted fiber bundles, and at the tip of the nozzle block, a guide member is projected toward the spindle inlet. CONSTITUTION:Fiber bundles S are fed through a sliver-charging guide 25 and drafted with a drafting apparatus made up of a pair of back rollers 26, a pair of middle rollers 28 with an apron 29 and a pair of front rollers 20, and then put to suction into a spinning equipment A through a gap 24 which has been formed by notching one side of a guide member support 13 fixed in a nozzle block 23 to act swirling air stream with its tip projected conically. Subsequently, fibers f1, a part of the fiber bundles S, are separated with a swirling air stream ejected through an air nozzle 17 near the tip of a guide member 22 projected toward the center of the inlet of a spindle 6, and forced to spirally wind on the fiber bundles S in the spindle 6, thus obtaining spun yarns Y.

Description

DETAILED DESCRIPTION OF THE INVENTION A.6 Objective of the Invention [Industrial Application Field] The present invention heats a non-twisted staple fiber bundle drafted by a drafting device by applying a swirling airflow to the bundle.

[Conventional technology]

Conventional spinning machines can be broadly classified into three types: ring type, oven end type, and air type.

Among these, pneumatic spinning machines have been developed in recent years, and are capable of spinning at speeds several times faster than ring-type spinning machines. This pneumatic spinning machine has two air injection nozzles arranged next to a draft device (for example, the Japanese Patent Publication No. 53-4
(See Publication No. 5422). Each of these nozzles applies a compressed air flow swirling in opposite directions to the fibers exiting the draft device, and the fiber bundle is false-twisted by the second nozzle, and the false-twisted fiber bundle is transferred to the first nozzle. The fibers are ballooned by a nozzle, some of the fibers are wound around other fibers by the balloon, and the fiber bundle is further passed through a second nozzle and untwisted to be tightly wound to produce a spun yarn.

Since this pneumatic spinning machine produces yarn using a false twisting and untwisting method, the yarn produced inevitably has a hard and poor texture. In addition, this device has limitations in improving yarn quality because it is difficult to stabilize the behavior of the fibers when wrapping, and because it uses two nozzles, it consumes a lot of compressed air, resulting in low energy costs. The problem is that it's big.

Furthermore, there are some difficulties in the ability to spin relatively long fibers such as wool.

In order to deal with this problem, the following spinning machine has been proposed (see Japanese Patent Laid-Open No. 85123/1983).

This device includes a rotating spindle that has a passage through which the fiber bundle exits from the front roller of a draft device, and an air injection nozzle that applies a swirling air flow near the inlet of the spindle to separate the fiber ends from the fiber bundle. The fiber ends are wound around the fiber bundle.

[Problem to be solved by the invention]

The yarn produced by the spinning machine disclosed in JP-A No. 63-85123 mentioned above has a property in which other fibers are spirally wound around a non-twisted or twisted core fiber. ,
Compared to ring yarn, where most fibers are twisted,
The appearance is different and the thread strength is also lower.

An object of the present invention is to provide an apparatus capable of producing yarn having characteristics similar to those of ring yarn using such a pneumatic spinning machine.

1. Structure of the Invention [Means for Solving the Problems] In order to achieve the above object, the spinning device of the present invention has a tip in the nozzle lock 23 that applies a swirling airflow to the fiber bundle S exiting the draft device. A guide member support 13 protruding conically is fixed, one side of which is cut out to form a gap 24 between it and the nozzle lock 23, and the tip of the guide member support 13 is provided with a rotating or stationary support. The guide member 22 is provided in a protruding manner with its tip facing the center of the inlet 6a of the spindle 6.

[For production]

In the spinning device configured as described above, the draft device! The fiber bundle S exiting 11D is sucked into the nozzle block 23 through the gap 24, exposed to swirling airflow near the inlet 6a of the spindle 6, and is slightly twisted. At this time, all the fibers of the fiber bundle S are located around the guide member 22, are directly exposed to the air flow, and are subjected to a force that separates them from the fiber bundle S, but the tips of the fibers at the entrance 6a of the spindle 6 are , because it is false twisted, it does not separate easily. The separated trailing ends of the fibers are wound around the outer periphery of the spindle 6 and extended outward by the action of the air flow. As the fiber bundle S travels, the fibers are gradually pulled out while turning around the fiber bundle S, and most of the fibers are wound in a spiral shape to form a serpentine spun yarn [Example] Drawing An embodiment of the spinning device of the present invention will be described with reference to FIG.

As shown in FIG.
, a middle roller pair 28 having an apron 29, and a front roller pair 20 are arranged next to the draft part D. Note that the lines extending left and right in the same figure indicate the fiber bundle S.
It is also a running path for the yarn Y, and 27 is a sliver width regulating guide.

The details of the spinning apparatus A will be explained with reference to FIG.

1 is a support plate fixed to the frame, to which a hollow cylindrical bearing 2, a spindle 6 and a casing 3 of a rotating body 9 are fixed. This casing 3
It consists of a pair of front and rear split molds, which are screwed together.

A spindle 6 is rotatably supported inside the bearing 2 via a bearing 4.5, and a hollow boot 17 is inserted into the outer periphery of the spindle 6.

Reference numeral 8 denotes an endless drive belt that is suspended along the unit in contact with the outer periphery of the pulley 7 and rotates the spindle 6 at high speed. A rotating body 9 is integrally provided at a position in front of the bearing 5 of the spindle 6.

A fiber bundle passage 10 is formed through the center of the spindle 6, and the center of this passage 10 and each center of the casing 3 are
Both are located on the same straight line that coincides with the running path of the fiber bundle S. In addition, the spindle population 6a and the front roller 20
The distance from the nip point N to the fiber bundle S is set to be shorter than the average length of the fibers constituting the fiber bundle S. Population 6 of spindle 6
The outer diameter of a is sufficiently small, and the portion following the inlet 6a is formed into a conical portion 6b whose outer diameter increases toward the rotating body 9. The part of the casing 3 that covers the spindle 6 and the rotating body 9 has a small-diameter cylindrical hollow chamber 11 near the inlet 6a of the spindle 6, and a conical hollow chamber that opens at a large angle in the part continuing from this hollow chamber 11. It is set at 12.

The area in front of the small-diameter hollow chamber 11 is formed into a cylindrical shape with a diameter slightly larger than the tip end diameter of the spindle 6 by a nozzle block 23, and the cylindrical portion serves as a guide passage for the fiber bundle S. In front of the conical hollow chamber 12, an annular hollow chamber 14 is formed, followed by a tangential air escape hole 15. An air suction pipe is connected to this air escape hole 15.

Inside the casing 3, a hollow air reservoir 16 is formed between it and the nozzle block 23. Nozzle block 23
In the air reservoir 16, four air injection nozzles 17 are formed, which are directed from the air chamber I6 toward the inlet 6a of the spindle 6, and which are tangential to the hollow chamber 11.
An air hose 19 is connected through the hole 18. The direction of the nozzle 17 is set to be the same as the rotational direction of the spindle 6.

The compressed air supplied from the hose 19 flows into the air reservoir 16 and then is ejected from the nozzle 17 into the hollow chamber 11 to generate a high-speed swirling air flow in the vicinity of the spindle port 6a.

This airflow swirls inside the hollow chamber 11, then diffuses outward while gently swirling inside the conical hollow chamber 12, is guided toward the escape hole 15, and is discharged. At the same time, this air flow generates a suction air flow that flows from the nip point N of the front roller 20 into the hollow portion of the casing 3.

21 is a cap fitted to the rear end of the bearing 2.

Further, a guide member support 13 is fixed to the inner wall of the nozzle lock 23. The guide member support 13 has a cylindrical shape with one end protruding conically, and one side thereof is cut out to form a gap 24 between it and the nozzle lock 23, and the gap 24 is used as a guide for the fiber bundle S. It is used as a passageway. By causing one end of the guide member support 13 to protrude in a conical shape in this way, the fibers of the fiber bundle S supplied from the gap are less likely to wind around, and even if they wind around, the amount is very small and is easy to unravel. Further, a hole is formed in the longitudinal direction of the guide member support 13, and the hole coincides with the center line of the spindle 6 passage IO, and the pin-shaped guide member 22 is inserted into the hole. The guide member 22 protrudes from the hole of the guide member support 13 and has a free end facing the shaft 6a of the spindle 6. It is effective to make this guide member 22 conical like the guide member support I3.

According to this method of installing the guide member 22, the artificial side of the device is not blocked by the guide member 22, so that the entrance of the fiber bundle S is not obstructed.

The guide member 22 has a diameter smaller than the passage diameter of the shaft 6a of the spindle 6, and has a smoothly curved tip.

Although the tip of the guide member 22 is shown in FIG. 2.3 at a position slightly inside the passage IO from the input 6a of the spindle 6, it should be set at an appropriate position according to the entry conditions 6a. is possible.

The guide member 22 functions as a so-called pseudo-core, which prevents the propagation of twist in the yarn forming process described later or temporarily takes the place of the central fiber bundle, and eliminates the disadvantages that appear conspicuously in conventional pneumatic bound spun yarns. This serves to prevent the formation of twisted core fiber bundles and virtually form yarns only from the wound fibers.

Next, the yarn manufacturing process using this actual twist style yarn manufacturing apparatus HA will be explained.

Draft outfit! The fiber bundle S drafted at D and sent out from the front roller 20 is drawn into the apparatus by the air flow sucked from Fj24 between the guide member support I3 and the nozzle lock 23, but this front roller 20 Prior to sending out the fiber bundle S from the spindle 6, the tip of a suction pipe (not shown) is brought into contact with the outlet 3o of the cap 2I, creating an air flow sucked into the spindle 6. Therefore, due to this air flow, the fiber bundle S entering the gap 24
is smoothly sucked into the spindle 6.

The yarn passed through the spindle 6 and sucked into the suction pipe is introduced into the splicing device by the movement of the suction pipe, and spliced with the yarn on the package side which is also introduced by the suction mouth.

The peripheral speed of the delivery roller provided on the downstream side of the outlet 30 of the cap 21 is set to be slightly higher than the peripheral speed of the front roller 20, and the peripheral speed of the delivery roller is set to be slightly higher than the peripheral speed of the front roller 20. , I try to maintain tension all the time.

The fiber bundle S is subjected to the action of a swirling compressed air flow near the inlet 6a of the spindle 6, and is slightly twisted in the same direction. At this time, the presence of the guide member 22 makes it impossible for the fiber bundle S to be located within the space occupied by the guide member 22. Therefore, all the fibers "l" are located around the guide member 22, are directly exposed to the air flow, and are subjected to a force that separates them from the fiber bundle S. However, the tip of the fiber "l" is located at the entrance 6a of the spindle 6. When the fiber is in the fla
As shown in FIG. 3, the 70 is not separated yet because it is nipped by the controller 20 or located far from the nozzle 17 and is not affected by air much.

When the rear end rla of the fiber leaves the front roller 20 and comes to a position where it receives a strong air flow from the nozzle 17, the fiber "l" separates from the fiber bundle S. At this time, the tip of the fiber H partially By undergoing false twisting,
In addition, since the fibers are inserted into the spindle 6 where the action of air is small, they do not separate, and only the rear end Ha of the fibers, which is hardly subjected to the false twisting action, separates from the fiber bundle S. The separated fiber rear end Ha is wrapped around the input hole 6a of the spindle 6 once or multiple times by the action of the airflow, and then wrapped around the conical part 6b of the spindle 6 a little, and then guided to the rotating body 9. and extends outward.

The fiber bundle S continues to run to the left in the figure, and on the other hand, since the spindle 6 is rotating, the fiber rear end Ha is gradually drawn out while turning around the fiber bundle S.

As a result, the fibers ``l'' are wound around the fiber bundle S in a spiral manner, and the fiber bundle S becomes a spun yarn Y and passes through the fiber bundle path IO.

In the manufacturing process of this yarn Y, the fibers N are separated from all over the entire outer periphery of the fiber bundle S, and the fibers located inside are also exposed to the air flow and separated, so that the fibers are further separated from the guide member 22. Since the fibers are located on the outer periphery, a large number of fibers are continuously separated. These separated fibers are
The fibers are evenly distributed in the conical part 6b of the spindle 6, and there are almost no core fibers, and most of the fibers are twisted and wound to form a real twisted yarn. The direction in which these wound fibers fl are wound is determined by the direction of the nozzle I7 and the direction of rotation of the spindle 6. The swirling direction of the airflow by the nozzle 17 is preferably set in the same direction as the rotation direction of the spindle 6 so as not to disturb the winding direction of the wrapped fiber H and to prevent the fiber tips from separating.

As described above, according to the apparatus of this embodiment, the spindle 6
The false twist that is about to propagate to the front roller 20 side from
Its propagation is prevented by the guide member 22, and the fiber bundle S leaving the front roller 20 is not twisted by false twisting, and most of the fibers become wound fibers. This means that when the guide member 22 is not installed, the flat fiber bundle sent out from the front roller 20 is
This can be confirmed by the appearance of a striped portion in the running direction near the center in the width direction.

Most preferably, the tip of the guide member 22 extends slightly into the passage of the spindle 6. The yarn produced under this condition has an appearance closest to that of a ring yarn, but it is also possible to manufacture a yarn having an appearance similar to a ring yarn under other conditions. These yarns are comparable in strength to ring yarns.

Although this example describes a type of spinning device that uses a spindle to apply twist, other spinning devices, such as a two-nozzle type bundled spun yarn manufacturing device, may have a guide member provided at the first nozzle inlet, or Depending on the conditions, it is also possible to apply the present invention to a spinning device using a nip twister or a nozzle type spinning device. In addition, the spindle 6 assists in twisting the yarn, and depending on the yarn, it can be manufactured even if it does not rotate, so the spindle 6 does not necessarily need to rotate.6 Effects of the Invention Since this invention is configured as explained above,
This produces the effects described below.

That is, it is possible to produce a real twisted yarn with an extremely large amount of wrapped fibers and comparable in appearance and strength to ring yarn.

Furthermore, since one end of the guide member support 13 is conically protruded, the fibers are less likely to be wound around, and even if they are wound around, they are easy to unravel. Furthermore, according to this method of installing the guide member 22, the tip of the guide member 22 can be accurately faced to the center of the inlet 6a of the spindle 6, and the artificial side of the device is not blocked, so that the entrance of the fiber bundle S is prevented. Do not disturb.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing an embodiment of a spinning device to which the device of the present invention is applied, FIG. 2 is a sectional view of the device of the present invention, and FIG. 3 is a schematic diagram showing a spinning state by the device. 3

Claims (1)

[Claims] 1. A guide member support 13 with a conically protruding tip is fixed in a nozzle lock 23 that applies swirling airflow to the fiber bundle S exiting the draft device D, and one side of the guide member support 13 is cut out to form a nozzle lock 23. A rotating or stationary spindle 6 is provided at the tip of the guide member support 13 with a gap 24 formed therebetween.
A spinning device in which a guide member 22 is provided protrudingly with its tip facing the center of an inlet 6a.