JPS6128024A - Twisting nozzle for fasciated spinning - Google Patents

Abstract

PURPOSE:To carry out easily threading during ending, by embedding detachably a bush which is protruded towards to space between nozzles at the periphery of the first nozzle hole and connected to the periphery of the second nozzle. CONSTITUTION:The two nozzles 8 and 9 are drawn from their twisting positions in a state where the space S is kept from each other, transferred to just under the piecing roller 25, the bush 21 attached to one of the nozzles is protruded, so that the yarn passageways of both the nozzles are made in an air-tight state. Suction force is applied to the nozzle 8 by the yarn end suction pipe 26, the suction force is applied to the outlet part of the nozzle 9, and the end part of yarn is introduced to the inlet part of the nozzle 8.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to an air heating nozzle used for bundle spinning, and more specifically, the air heating nozzle is divided into two nozzles separated by a yarn path P and having a gap between them. Static heating nozzle and thread splicing
This invention relates to an air heating nozzle for a binding and spinning device that is equipped with suction means that acts on the upstream nozzle inlet.

Conventional technology In a binding and spinning device, untwisted ribbon-shaped fiber bundles that are continuously supplied from a draft device are introduced into a heating nozzle, and the air swirling flow inside the heating nozzle heats and untwists them to perform binding and spinning. Yarn is produced at a rate of 10,077 per minute.
It is possible to spin at high speeds of over 1J and has attracted attention in recent years. By the way, yarn splicing in binding spinning equipment is generally
This is done by knotting, which involves twisting the yarn ends together into a knot, or piecing, which involves intertwining yarn and fiber bundles. Knotting creates knots in the knotted yarn and causes the cut end of the yarn to protrude from the yarn, causing problems in the operation of knitting machines and looms, such as getting caught in yarn guides and yarn feeding members in subsequent processes such as knitting machines and looms. . Therefore, beading is better, but in order to carry out piecing with the above-mentioned binding spinning device, it is necessary to unwind the finished yarn end from the package and feed it back into the heating nozzle. Like this P
In order to send the thread end back through the heating nozzle,
No. 8 in Publication No. 56-42874 published on October 3rd.
As shown in the figure, there are air injection holes 50a that eject air in the yarn running direction and generate a swirling air flow, and air injection holes 50a that eject air in the opposite direction to the yarn running direction and generate a swirling air flow. It is disclosed that an air injection hole 50b is formed inside one heating nozzle 50. In this heating nozzle 50), the thread passage is continuous from the inlet to the outlet, and the thread can be threaded smoothly from the outlet to the inlet of the heating nozzle 50. However, since the static injection hole 50b for yarn feeding is formed in the same nozzle, not only the structure of the heating nozzle is complicated, but also the fiber There is also a risk of clogging. or,
The internal volume of the heating nozzle 50 expands from the reverse air injection hole 50b#.

During steady spinning, problems such as air diffusion and pressure fluctuations tend to occur.

On the other hand, in order to obtain a bound spun yarn with high yarn strength, it is important to increase the number of bound fibers and to tightly wrap the bound fibers around the core fibers at a large twist angle. However, it is very difficult to satisfy these two conditions with one heating nozzle. In other words, in order to increase the number of bundled fibers, it is necessary to prevent the twist added to the fiber bundle from reaching near the nip point of the 70 controller.
When a larger twist is applied to the core fiber bundle in order to tightly wrap the binding fibers around the core fiber at a large twist angle, the twist will be traced back to near the nip point of the front roller. In order to solve this problem and sufficiently enhance the bundling effect, for example, as disclosed in Japanese Patent Publication No. 52-50293, a heating nozzle consisting of two nozzles divided along the yarn path is used. It is being used. However, in such a heating nozzle, if the discharge of the first nozzle, which generates a swirling flow in the opposite direction to that of the second nozzle, is introduced into the second nozzle, it will adversely affect the action of the second nozzle. A gap is provided for the first nozzle exhaust, but since the two nozzles are far apart, even if suction is applied from the nozzle inlet side during yarn splicing, the suction force is significantly reduced due to the gap ν between the nozzles. There is a problem in that the yarn speed decreases, the yarn cannot be fed back smoothly, and the yarn splicing cannot be performed smoothly. In the above-mentioned Japanese Utility Model Publication No. 56-42374, when the heating nozzle is composed of two heating nozzles 50 each having a reverse air injection hole 50b as shown in FIG.
A method has been proposed in which, during threading, one heating nozzle 50 is moved at the spinning position to connect the thread passages and air is jetted through the air injection holes 50b to thread the thread. However, this device also has the same disadvantages as described above.

Problems to be Solved by the Invention This invention includes an air heating nozzle consisting of two nozzles spaced apart from each other in order to increase the bundling effect, and a suction means that acts on the upstream nozzle inlet of the nozzle group during yarn splicing. This binding and spinning device t is intended to solve the problem that it is difficult to feed the yarn back into the heating nozzle during yarn splicing.

Means for Eliminating Negative Points The present invention includes an air heating nozzle consisting of two nozzles divided along the yarn path with a gap between them, and a suction means acting on the upstream nozzle inlet during yarn splicing. In the binding spinning device equipped with the above, the above-mentioned intermittent point is solved by embedding a bushing protruding toward the gap and communicating with the nozzle hole of the other nozzle so as to be removable and removable around the nozzle hole of at least one nozzle. do.

Function: In this invention, two nozzles are arranged with a gap t apart from each other in order to increase the bundling effect. Due to the protrusion, the thread passages of both nozzles are communicated in a substantially airtight manner. When the suction means is applied to the first nozzle in this state, the action of the suction means extends from the outlet of the second nozzle to the end of the completed yarn connected to the package from the outlet of the second nozzle to the inlet of the first nozzle. It will be smoothly derived towards.

Example 1 A first example embodying the present invention will be described below with reference to FIGS. 1 to 5. As shown in FIG. 4, the binding spinning device has a heating nozzle 4 disposed above a draft device each consisting of a pair of pack rows 1, a middle apron 2, and a front roller 3. Heating from this,
The yarn Y, which is spun as a bound spun yarn after being untwisted,
Drawer loaf 5, JiH%! l) Rotatable on cradle arm 7 via drum 6? This supported bobbin, B
It is designed to be wound up as package P on J2.

The heating nozzle 4 consists of a first nozzle 8 and a second nozzle 9 that generate swirling flows in opposite directions to each other, and the first nozzle is located between the two nozzles at a steady spinning position close to the front roller 3 of the draft roller device. It is arranged with a wedge-shaped gap S for exhaust gas discharge. As shown in FIG. 1, the first nozzle 8 has a small diameter inlet portion 8a continuously formed from the fluorocarbon roller 3 side (upstream side) to the downstream side,
A yarn passage consisting of the large diameter hole 8b is formed, and the large diameter hole 8b
In b, an air injection hole 11 whose one end communicates with the air storage chamber 10 is opened eccentrically so as to be inclined in the direction e to promote the advancement of the yarn Y and to generate a swirling flow in the large diameter hole portion 8b. The second nozzle 9 disposed on the downstream side has a small diameter inlet part 9a formed at a position opposite to the outlet of the first nozzle 8, and has a large diameter hole part 9b and an outlet part on the downstream side. 9C are continuously formed to constitute a thread passage. The large-diameter hole 9b has an air injection hole 13 that communicates with the air storage chamber 12 at one end and is inclined in a direction that promotes the advancement of the yarn Y and generates a swirling flow in the opposite direction to the first nozzle 8. The opening is eccentric.

In order for the air flow injected into the large diameter hole 9b to form a swirling flow that effectively heats the yarn Y, this air injection hole 1 is required.
3 to 7 are formed, and the air injection holes 13 are made large so that the air flow is injected as much as possible from each air injection hole 13 along the wall surface of the large diameter hole 9b. It is preferable that the opening is tangential to the wall surface of the diameter hole 9b.

Yes.

The nozzle 4 is fitted into two guide rods 14 and 15 having a circular cross section and arranged parallel to the axis of the front roller 3, and is slidably arranged along the guide rods 14 and 15. has been done.

A bushing 21 in the form of a permanent magnet is arranged so as to protrude toward the inlet 9aP of the nozzle 9, and the bushing 21 is arranged around the circumference P of the large diameter hole 8b of the nozzle 8. This is fitted into the annular hole 22 provided, and
It is likely to be pressed downward by the spring 23. Also, hole 2
An electromagnet 24 is buried in the bottom of the bushing 2, and when a current flows through the electromagnet 24, the side facing the flange portion 21a of the bushing 21 connects with an electromagnet having the same polarity as the flange portion 21a.

Next, the operation of the apparatus configured as described above will be explained. During steady spinning, both nozzles 8.9 are
The nozzle 8 is arranged with a gap S for exhaust discharge formed, and the 1Mk fiber F is drafted to a predetermined magnification by a drafting device and continuously supplied to the heating nozzle 4P, where it is heated and decomposed. It is twisted to produce a bound spun Y, which passes through a pull-out roller 5 and a traversing drum 6 to a bobbin BJ.
It is rolled up as J-package P. Since the exhaust gas from the first nozzle 8 is discharged to the outside through the gap S, the exhaust gas from the first nozzle will not enter the inlet portion 9ar of the second nozzle 90 and obstruct the action of the second nozzle 9. 4
This action is sufficiently applied to the yarn Y, the binding effect is enhanced, and a bound spun yarn with high yarn strength is produced.

When the yarn Y breaks during spinning, the cradle arm 7 supporting the package P is pushed up by a push-up mechanism (not shown) to separate the package P from the traversing lid comb 6. On the other hand, the pack roller 1 of the draft device immediately stops, and the other loaves continue to rotate, and the fiber bundle F is then cut between the pack roller 1 and the middle apron 2.

Next, by operating the yarn end pickup mechanism while reversing the package drive roller of the yarn splicing device, the yarn end wound around the package P is pulled out and gripped by the beading roller 25), and the beading roller 25 is transferred to the second nozzle 9. It is located directly above the outlet section 9C. Next, as shown by the chain line in FIG. 5, the heating nozzle 4 and the piecing roller 25 are moved along the axial direction of the roller 3 to the threading position. When moving from the steady spinning position to the threading position, the heating nozzle 4 is guided by guide rods 14 and 15 and moves in parallel while maintaining its posture at the steady spinning position. Further, by the movement to the threading position, a space is created below the heating nozzle 4, that is, on the inlet side of the first nozzle 89, into which a yarn end suction tube 26 having a known structure can enter.

Next, when the heating nozzle 4 is moved to this threading position and the electromagnet 24 is energized, the bush 21 is moved to the first nozzle 8 due to the repulsive force between the magnets, as shown in FIG.
The tip protrudes from the second nozzle 9, and its tip abuts the inlet portion 9d of the second nozzle 9, so that the yarn passages of both nozzles 8 and 9 are communicated in a substantially airtight state.

In this state P, the yarn end suction tube 26 is closely connected to the inlet of the first nozzle 80 as shown in FIG. 3, and a suction action is exerted on the yarn path F. As described above, since the yarn passages of both nozzles 8.9 are communicated with each other in a substantially airtight state, the suction action of the yarn end suction tube 26 does not decrease to the outlet portion 90 of the second nozzle 9, and the piecing roller The yarn end guided through the piecing roller 25 is smoothly inserted from the outlet 9c of the second nozzle 9 toward the inlet 8a of the first nozzle 8, and is fed a fixed length by the piecing roller 25. Next, electromagnet 24
is demagnetized, the bushing 21 is pushed downward by the repulsive force of the spring 23 and housed in the first nozzle 8, and a predetermined gap S for exhaust gas discharge is formed between the first nozzle 8 and the second nozzle 9. Ru.

As the heating nozzle 4 and the yarn end suction tube 26 move to the steady spinning position, they are guided to the nip point of the front roller 3, joined to the fiber bundle F in the draft device, and the yarn splicing is performed in a predetermined manner. It will be done.

Note that when the yarn end is introduced into the outlet section 9C of the second nozzle 9 at the threading position, not only the suction action of the yarn end suction tube 26 but also the suction action of the yarn end suction tube 26 is applied to the outlet section 9C side of the second nozzle 9 toward the outlet section 9C. A blowing means for blowing air may be operated at the same time.

Example 2 Next, a second example embodying the present invention will be described with reference to FIGS. 6 and 7. In the apparatus of this embodiment, the device for moving the bush 21 up and down is different from the previous embodiment, but the structure of the thread passage etc. is the same. An air injection hole 32 communicating with an air storage chamber 31 is installed at the bottom of an annular hole 22 provided around the large diameter hole 8b of the first nozzle 8. A space 22a is formed between the bottom of the hole 22 and the seventh flange 21b, into which the compressed air injected from the air injection hole 32 is introduced.

In this device, at the steady spinning position, compressed air is not introduced from the injection hole 32, and the bush 21 is accommodated within the annular hole 22 due to the resistance of the spring 23. When the heating nozzle 4 is moved to the threading position during yarn splicing, compressed air is introduced into the space 22a from the injection hole 32, and the flange 21b is suppressed upward by the pressure.
A bush 21 protrudes from the first nozzle 8, and its tip abuts against the inlet surface 9di of the second nozzle 9, so that the thread passages of both nozzles 8 and 9 are communicated in a substantially airtight state. Therefore, when the yarn end suction tube 26 is connected to the inlet portion 8a of the first nozzle 8 at the threading position in the same way as in the embodiment described above to exert a suction effect, the suction effect is not reduced and the suction tube 26 The end of the yarn and the end of the yarn can be drawn out smoothly.

Note that the present invention is not limited to the above-mentioned embodiments; 1) For example, the bushing 21 protruding toward the gap S may be buried in the second nozzle 9, or the bushing 21 may be buried in both nozzles 8.9). However, at the time of yarn splicing, the bushings 21 may be projected from both nozzles 819 toward the gap S, and both bushings 21 may be connected to communicate with the thread passage ft in an airtight state.

Also, by gluing an elastic member such as rubber to the tip P of the bushing 21, air leakage from the tip of the bushing 21 can be prevented.
The airtight state can be further improved. In addition, it is also possible to arbitrarily change the shape, structure, etc. of each part without departing from the spirit of the invention.

Effects of the Invention As detailed above, according to the present invention, during steady spinning, the exhaust gas from the first nozzle is released from the gap S formed between both nozzles, which adversely affects the operation of the second nozzle. The bundling effect during steady spinning can be sufficiently enhanced without any problems, and the thread passages of both nozzles are communicated in a substantially airtight state due to the bush protruding from the gap during yarn splicing. By applying the suction means to the inlet of the first nozzle, threading from the outlet to the inlet of the heating nozzle can be easily and smoothly carried out, and the splicing can be reliably performed.

[Brief explanation of the drawing]

1 to 5 show a first embodiment of the present invention, FIG. 1 is a side sectional view of the main part showing the state during steady spinning, and FIG. 2.3
The figure is a sectional side view of the main part showing the state during yarn splicing, FIG. 4 is a side view of the whole, and FIG. 5 is a front view of the main part. Fig. 6.7 is a side sectional view of the main part of the second embodiment, and Fig. 8.9 is a side sectional view of the conventional device. 4... Heating nozzle 8... First nozzle 9...
Second nozzle 21... Bush 26... Yarn end suction tube

Claims (1)

[Claims] In a binding spinning device that is equipped with an air twisting nozzle consisting of two nozzles divided along a yarn path and provided with a gap between them, and a suction means that acts on the upstream nozzle inlet during yarn splicing, at least one of the nozzles is A heating nozzle for bundle spinning, characterized in that a bush is removably embedded around the nozzle hole and protrudes toward the gap and communicates with the periphery of the nozzle hole of the other nozzle.