JPS60146023A - Ending in fasciated spinning frame - Google Patents

Abstract

PURPOSE:To enable the smooth reverse transfer of the yarn end in an air-twisting nozzle in the case of ending, by using an air-twisting nozzle composed of plural blocks having proper gaps therebetween and divided from each other along the path of the yarn. CONSTITUTION:The air-twisting nozzle 4 is constructed of plural blocks 5, 6 divided from each other along the path of the yarn and separated by tapered gaps. The yarn path of the air-twisting nozzle 4 can be made gas-tight by shifting the blocks 5, 6 and/or the auxiliary member 10 and closing the gap between the blocks 5, 6 with the auxiliary member 10. The threading of the yarn from the outlet to the inlet of the air-twisting nozzle can be carried out easily by this process.

Description

[Detailed description of the invention] Technical field The present invention relates to a yarn splicing method for a binding spinning device.

More specifically, the present invention includes an air heating nozzle consisting of a plurality of blocks segmented and spaced apart along the yarn path to heat the fiber bundle with an air stream and to separate the free fibers into l! In a device that constructs a bundled spun yarn by wrapping it around the surface of the ift bundle, when the yarn breaks, the package side yarn end and 1!
This relates to a method of splicing by intertwining (beading) fiber bundle tips.

Description of conventional technology In the air heating spinning method, a draft device consisting of a plurality of pairs of nip rollers and an air heating nozzle are provided downstream of and close to the front roller of the draft device. An untwisted ribbon-like fiber bundle is introduced into an air heating nozzle, heated by an air stream, and free [# mll! It is wound into bundles and made into spun yarn. According to such an air-heated spinning method, it is possible to perform spinning at a high speed of 100,111 mm per minute or more, and this spinning method has attracted attention in recent years.

Meanwhile, in general! Thread splicing in the III machine is performed by knotting, in which the ends of the thread are tied together, or by beading, in which the ends of the thread are intertwined. Knotting creates lumps in the tied yarns and causes the cut end of the yarn to protrude from the yarn, so when knotting is performed on spun yarns, it may get caught in the yarn guide or yarn feeding member during subsequent processes such as knitting and weaving, resulting in damage to the knitting machine, This will cause trouble when driving Orine. Therefore, beading is better for splicing spun yarn.

Beading is carried out in the binding spinning process described above.

In order to do this, it is necessary to unwind the finished yarn end from the yarn package and feed it back through the air heating nozzle.

In order to feed the yarn end backwards through the air heating nozzle in this way,
Japanese Utility Model Publication No. 56-42374 discloses an air jet nozzle that jets air in the yarn running direction and generates a swirling air flow, and an air jet nozzle that jets air in the opposite direction to the yarn traveling direction and generates a swirling air flow. It is disclosed that an air ejection nozzle with a number of 1- is formed inside one air heating nozzle. The air heating nozzle disclosed in this publication has a yarn passage [
-1 to the outlet, and threading from the outlet to the inlet of the air heating nozzle can be done smoothly. However, since the air holes for thread feeding are built into the same nozzle, the structure of the air heating nozzle becomes complicated, and the bundling effect during steady operation is insufficient.

In order to sufficiently increase the binding effect, for example,
As disclosed in Japanese Patent No. 50293, an air heating nozzle consisting of a plurality of blocks divided along the yarn path and spaced apart from each other has been used. However, in such an air heating nozzle, the blocks are separated by gaps, so even if suction is drawn from the nozzle inlet side during yarn splicing, the suction force is significantly reduced due to the gaps between the blocks, making it difficult for the yarn to be fed back smoothly. There is a problem in that the thread cannot be spliced smoothly.

Purpose of the Invention The present invention enables smooth reverse feeding of yarn ends within an air heating nozzle during yarn splicing, and furthermore, during steady operation, a plurality of blocks of the air heating nozzle are divided along the yarn path and spaced apart from each other. An object of the present invention is to provide a yarn splicing method for a binding spinning device which has a large binding effect and has a large binding effect.

Structure of the Invention In the present invention, in a method of splicing yarn using a bundling spinning device equipped with an air-heating nozzle consisting of a plurality of blocks divided in a yarn path and spaced apart from each other, the space between the blocks during yarn splicing is provided. The thread passage has a substantially airtight structure,
The above-described splicing method for a bundling and spinning device in which the end of the completed yarn is led out from the final outlet of the air heating nozzle toward the inlet of the air heating nozzle by applying a suction air flow to the inlet of the air heating nozzle. Achieve your goals.

According to the present invention, when leading out the yarn end from the I Hiragi outlet of the air heating nozzle toward the inlet, a yarn end suction means is positioned at the entrance of the air heating nozzle, and the yarn end is drawn out by the yarn end suction means. Preferably, it is threaded through an air heating nozzle.

Further, when carrying out the present invention, it is preferable that an auxiliary member is inserted into the gap between the blocks to make the thread passage between the blocks substantially airtight.

DESCRIPTION OF EMBODIMENTS The present invention will now be described in detail with reference to the drawings, which illustrate preferred embodiments of the invention.

FIG. 1 is a side view showing a bundling and spinning unit that implements the yarn splicing method of the bundling and spinning device according to the present invention. In FIG.
．． 1', middle apron 2, 2', and front roller 3.3'.

An air heating nozzle 4 is provided near the freon 1 to roller 3.3' downstream of the front roller 3.3'.

The air heating nozzle 4 can assume a steady operating position shown in FIG. 1 and a splicing position shown in chain lines in FIG.

The inside of the air heating nozzle 4 is shown in FIG.

The air heating nozzle 4 is divided along the yarn path and consists of a plurality (two in FIG. 3) of blocks 5.6 spaced apart from each other by transverse gaps.

The upstream block 5 has a nozzle inlet 5a on the front roller 3.3' side. The nozzle inlet portion 5a is connected to the yarn passage 5b, and further connected to a tube portion 5C having an arbitrary structure. One or more air injection holes 5e are opened at an angle from the air storage chamber 5d to the periphery of the yarn passage 5b to promote the advancement of the yarn. That is, the air injection hole 5e
The diameter of each air injection hole 5e is made small, and the number of holes is about 3 to 7 so that the air flow flowing into the yarn passage 5b forms an effective vortex flow that sufficiently heats the yarn. In addition, each air injection hole 5e should be kept as close as possible to the yarn passage 5b.
Air injection hole 5 so that the air flow is injected along the wall surface of
Preferably, e is opened in the tangential direction of the yarn passage 5b.

The downstream block 6 has a nozzle inlet portion 6a facing the pipe portion 5C of the upstream block 5.

The nozzle inlet section 6a is connected to a yarn passage 6b, and further connected to a tube section 6c having an arbitrary structure. One or more air injection holes 6e are provided around the yarn passage 6b from the air storage chamber 6d.
is opened to heat the thread. That is, the diameter of each air injection hole 6e is made small so that the air flow flowing into the yarn passage 6b from the air injection hole 6e forms an effective vortex flow for sufficiently heating the yarn. The number of air injection holes 6e is increased to about 3 to 7, and the air injection holes 6e are arranged in the tangential direction of the yarn passage 6b so that the air flow is injected as much as possible along the wall surface of the yarn passage 6b. Preferably, it is open.

Here, an air injection nozzle is formed by an air injection hole 5e in the upstream block 5 and generates a swirling air flow in the yarn passage 5b, and an air injection nozzle is formed by an air injection hole 6e in the downstream block 6 and generates swirling air flow in the yarn passage 6b. What is an air injection nozzle that produces a flow?
It is formed to eject air in the opposite direction to the running direction of the yarn during yarn splicing, and to generate a swirling air flow in the opposite direction at the yarn splicing.

In FIG. 4, reference numeral 10 denotes an auxiliary member for filling the gap between the blocks 5.6 of the air heating nozzle 4 shown in FIG. 3, and has an external shape corresponding to the gap between the blocks 5.6, The inside has a conical passage 10a whose inner diameter decreases from the block 5 side to the block 6 side. Note that, as shown in FIG. 5, the passage 10a communicates with the outside through a slit l-10b extending in the axial direction, and the yarn in the passage 10a is moored within the air heating nozzle 4 through the slit 10b. The auxiliary member 10 can be taken out from the air heating nozzle 4 while keeping the position. The shape of the passage 10a is arbitrary, as long as the tube part 5C and the inlet part 6a are joined and the shape does not hinder the thread extraction.

Moving the auxiliary member 10 while keeping the block 5.6 fixed,
or move block 5.6, for example from the position shown in FIG. 1 to the position shown in FIG.
．． 6 and the auxiliary member 10, the thread passage of the air heating nozzle 4 is made airtight by applying the auxiliary member 10 to the gap between the blocks 5, 6. Note that the airtight state referred to here does not have to be strict, but it is sufficient that it does not substantially impede suction of the thread.

The pipe portion 5G of the upstream block 5 may have various deformed shapes such as multi-grooved or porous, or only the central portion that guides the thread is directly involved in the thread running, and is not auxiliary. When the member 10 is installed, it is preferable to leave only this thread passage portion and cover the other portions with the auxiliary member 10.

Further, although the entrance portion 6a of the downstream block 6 is usually reduced from the outside to the inside in order to facilitate the entry of the yarn, the yarn passage 10a of the auxiliary member 10 is C is preferably equal to or slightly larger than the maximum pore diameter of the artificial part 6a.

In Fig. 1, during steady operation, the fleece F is drafted at a predetermined magnification by a device to a driver 71 consisting of a back roller 1.1', a middle apron 2.2', and a front roller 3.3' to form a ribbon-like material. Make it into a fiber bundle.

The fiber bundle (fleece F) is heated and untwisted by an air heating nozzle 4 to produce a bundled spun yarn Y, which is passed through a pull-out roller 7, 7' and a traversing drum 8 to a cradle as shown in FIG. It is wound up as a package P onto a bobbin B supported on an arm 9.

When the spun yarn Y breaks during spinning, a mechanism (not shown) that pushes up the cradle arm 9 supporting the package P is used.
to separate the package P from the drum 8. Further, the back roller 1.1' of the draft mechanism immediately stops, the other rollers continue to rotate, and the fiber bundle F is cut between the back roller 1.1' and the middle roller 2.2'.

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, gripped by a beading roller (not shown), and the beading roller is pumped with air. It is located directly downstream (directly above) the final outlet of the heating nozzle 4.

Next, as shown by the chain line in FIG. 2, the air heating nozzle 4 is moved together with the piecing roller in the axial direction of the front roller 3.3' to remove it from the yarn path during steady operation. Therefore, a space is created below the air heating nozzle 4, that is, on the inlet side. Through this space, the yarn end suction means 11 having a known structure can be positioned close to the inlet side of the air heating nozzle 4.

Meanwhile, the auxiliary member 10 is applied to the gap between the blocks 5.6 according to the procedure described above, so that the thread passage between the blocks 5.6 is made substantially airtight. In this state, the yarn end suction means 11 is operated. Then, the gap between the blocks 5 and 6 is closed by the auxiliary member 10, and the end of the yarn completed on the package P is heated by air without reducing the suction effect of the yarn @ suction means 11. The air can be smoothly led out from the final outlet of the nozzle 4 to the inlet of the air heating nozzle 4. When the air heating nozzle 4 and the yarn end suction means 11 return to their normal operating positions, the yarn end led out to the inlet of the air heating nozzle 4 is moved to the front roller 3.3'.
is guided to the nip point and beaded by a known method.

Another embodiment is shown in FIG. In this embodiment as well, the air heating nozzle 4 consists of two blocks 5.6, and the thread passage formed inside both blocks 5.6 is arranged in a plane perpendicular to the axis of the front roller 3.3'. , the fiber bundle is bent by an angle θ to pass through the yarn passage 6a of the air heating nozzle 4.
By making contact with the inner wall surface of the front roller 3.3', the twisting is prevented to some extent from going backwards in the direction of the front roller 3. That's what I do. In this case, the bending angle θ is at most 60°. If this value is exceeded, twisting will be significantly inhibited, yarn breakage will increase, and operability will decrease.

Also in this embodiment, the block 5 of the air heating nozzle 4
．． It is possible to fill the gap between 6 and 6 with the auxiliary member 10. That is, the auxiliary member 10 has an outer shape corresponding to the gap between the blocks 5 and 6, and has a conical passage 10a inside thereof that faces from the block 5 side to the block 6 side and has a reduced inner diameter. Note that the passage 10a communicates with the outside through a slit 10b extending in the axial direction, and the auxiliary member 10 is connected to the outside from the air heating nozzle 4 while the yarn in the passage 10a is moored to the air heating nozzle through the slit 10b. It can be taken out at any time.

Moving the auxiliary member 10 while keeping the block 5.6 fixed,
or move block 5.6, for example from the position shown in FIG. 1 to the position shown in FIG.
．． 6 and the auxiliary member 10, the thread passage of the air heating nozzle 4 is made airtight by applying the auxiliary member 10 to the gap between the blocks 5, 6. Note that, as in the previous embodiment, the airtight state here does not have to be strict, but it is sufficient that it does not substantially impede suction of the thread.

In the above embodiment, an air heating nozzle is formed, and the blocks, which are spaced apart from each other during steady operation, do not move relative to each other during yarn splicing, and an auxiliary member is inserted into the gap between them to form the air heating nozzle. Threading is carried out efficiently in a substantially airtight state, and even if both blocks are connected by compressed air piping, the blocks do not move relative to each other, so the characteristics of the air heating nozzle do not change, which is preferable.

Still another embodiment is shown in FIG. In this embodiment, both blocks 5, 6 are slidably connected to each other by a spring (not shown) or the like, without using any auxiliary member, and their relative positions are variable. During thread splicing work,
As shown by the chain lines in FIG. 7, both blocks are brought into contact with each other to make the gap between the blocks substantially airtight, and the front top roller 3' is separated from the bottom roller 3, so that the front top roller 3' is separated from the bottom roller 3, and Yarn end suction means 11 entering from
suction the thread end. During beading, the starting end of the fiber bundle fed from the back roller 1.1' overlaps the end of the suction yarn by a certain length at the nip point of the 70 controller 3.3'.
Set the release timing of the front top roller 3'.

Providing an air injection hole in the nozzle that has the effect of promoting the yarn in the direction of the nozzle inlet from which the yarn end is to be drawn out is not only extremely efficient from the viewpoint of the structure of the yarn passage, but also requires piping and This requires switching equipment such as a solenoid valve, which is economically disadvantageous and impractical. Therefore, it is advantageous to use a yarn end suction means 11 separate from the nozzle 4 for drawing out the yarn end.

Note that the embodiments shown in FIGS. 3 and 6 and the embodiment shown in FIG. 7 may be combined. By adopting this aspect, especially when the gap between the blocks 5.6 is narrow at the entrance and widens inside, one or both of the blocks 5.6 is first moved to a width that allows the auxiliary member 10 to pass through. However, by positioning the auxiliary member 1° between the blocks 5.6 and then moving one or both of the blocks 5.6 to abut against the auxiliary member 10, an airtight state can be easily achieved.

Effects of the Invention According to the present invention, an air conditioning nozzle consisting of a plurality of blocks divided along the yarn path and spaced apart from each other is used, and it is possible to sufficiently enhance the bundling effect during steady operation. Moreover, when piecing yarn, the thread passage of the air heating nozzle is continuous from the inlet to the outlet, and by applying a suction action to the inlet of the heating nozzle, threading from the outlet to the inlet of the air heating nozzle can be easily carried out. The thread can be spliced smoothly and reliably.

[Brief explanation of the drawing]

FIG. 1 is a side view of a binding and spinning device that implements the splicing method of the binding and spinning device according to the present invention, FIG. 2 is a partial front view showing the splicing state of FIG. 1, and FIG. 3 is the same as that shown in FIG. 4 is a sectional side view of the auxiliary member used with the air heating nozzle shown in FIG. 3; FIG. 5 is an enlarged cross-sectional side view of the auxiliary member shown in FIG. 4. , FIG. 6 is a cross-sectional side view of another embodiment of the air heating nozzle, and FIG. 7 is a cross-sectional side view of still another embodiment of the air heating nozzle. 3...Bottom front roller, 3'...Top front roller, 4...Air heating nozzle, 5.6...Block, 5a
, 5a... Nozzle inlet section, 5b16b... Yarn passage, 5e, 5e... Air injection hole 7... Auxiliary member, 11... Yarn end suction means Patent applicant Toyota Industries Corporation. Patent application agent Eiji Sannaka Patent attorney Kikue Yamamoto Engraving of drawings (no changes in content) Figure 1 Figure 3 C Figure 4 Figure 5 Figure 6 Figure 7 Procedural amendment (method) % formula % 1. Indication of the case Patent application filed on January 9, 1980 2. Name of the invention Thread splicing method for binding spinning device 3. Relationship with the case of the person making the amendment Name of the patent applicant (321) Stocks Company: Toyota Automatic Loom Works 4, Agent address: 2-3-7 Taito, Taito-ku, Tokyo 110 Nikko Palace Akikahara 601 Telephone (835) 8231 Drawing 6 Contents of amendments Engraving of the drawing (no changes to the content) 7 , 1 copy of catalog of attached documents

Claims (1)

[Claims] 1. In a method of splicing yarn using a bundling spinning device equipped with an air-heating nozzle consisting of a plurality of blocks divided along a yarn path and spaced apart from each other, the yarn between the blocks during yarn splicing is The finished yarn end is directed from the final outlet of the air heating nozzle towards the inlet of the air heating nozzle by making the passage substantially airtight and applying a suction air stream to the inlet of the air heating nozzle. A yarn splicing method for a binding spinning device, characterized in that: 2. The yarn piecing method according to claim 1, wherein a yarn end suction means is located at the entrance of the curved air heating nozzle, and the yarn end suction means threads the yarn end through the air heating nozzle. 3. A yarn splicing method for a bundled spinning device according to claim 1 or 2, wherein an auxiliary member is inserted into the gap between the blocks to make the yarn passage between the blocks a substantially airtight structure. 4. The binding spinning device according to claim 1 or 2, wherein the block is relatively moved along the yarn path and both blocks are brought into contact with each other so that the yarn path between the two blocks is made into a substantially airtight structure. How to join threads. 5. An auxiliary member is inserted into the gap between the blocks, and at least one of the blocks is moved toward the auxiliary member, so that the thread passage between the blocks is made into a substantially airtight structure. Alternatively, the yarn splicing method for a binding spinning device according to item 2.