JPH08269833A - Production device for fancy yarn - Google Patents

Abstract

PURPOSE: To provide a device capable of inexpensively producing a fancy yarn by one process. CONSTITUTION: Covering means 1a and 1b for winding a core yarn having passed through a revolving hollow spindle with a covering yarn unwound from a bobbin attached to the hollow spindle are vertically arranged through a yarn guide 3 at a middle part and the lower covering means 1b is equipped with an air jetting means 17 for producing a rising current of air to collect slack of an excessively fed amount of a core yarn 5 passing through the hollow spindle 2b in the vicinity of the yarn guide 3 at the middle part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for efficiently producing a so-called fancy yarn, in which loops, nodes and the like are arranged at irregular positions.

[0002]

2. Description of the Related Art Generally, a fancy yarn is one in which a plurality of yarns are twisted, and the thickness of the yarns is changed, or the twisting and the tension are changed to give a characteristic design effect.

This includes loop yarns obtained by twisting straight yarns with looped yarns, nep yarns obtained by twisting straight yarns with irregular knotted yarns, thin core yarns, and twists. Various things were known, such as a bouclé yarn that entangles a sweet thick yarn like a crimp, a knot yarn that hardens and winds a knot around a core yarn at regular intervals when twisting the yarn. .

[0004]

However, in order to manufacture a fancy yarn, a looped yarn, a yarn with irregular knots, etc. are made in advance and then twisted with other yarns, which requires a plurality of steps. The manufacturing cost was high, and as a result, it could only be applied to fashion clothing and high-quality clothing that could be sold at high prices.

In view of the above points, an object of the present invention is to provide an apparatus capable of inexpensively manufacturing a fancy yarn in one step. Another object is to provide a device capable of accurately forming irregular loops and nodes. Yet another object is to provide a device that facilitates the formation of fancy yarn loops.

[0006]

In order to achieve the above object, in the fancy yarn manufacturing apparatus of the present invention, a core yarn passing through a rotating hollow spindle is unwound from a bobbin fitted to the hollow spindle. Covering means for winding the cover thread is arranged in the upper and lower parts in the middle part via a thread guide, and looseness of the excessive supply of the core thread passing through the hollow spindle is applied to the lower part of the covering ring means in the middle part. An air jetting means for generating an ascending airflow is provided so as to gather near the guide.

Further, in the fancy yarn manufacturing apparatus of the present invention, the slack of the excessive supply of the core yarn is accurately collected in the vicinity of the yarn guide in the middle portion, and the upper end of the lower hollow spindle is fixed so that it can be fixed by the cover yarn. It is extended so that it approaches the thread guide in the middle.

Further, the fancy yarn manufacturing apparatus of the present invention is constructed so that twist can be positively imparted to the core yarn in order to facilitate the formation of the loop by the core yarn.

[0009]

[Function] The core yarn drawn out from the winding ball passes through the rotating hollow spindle of the lower covering means, passes through the yarn guide in the middle portion, and rotates the upper covering means (opposite to the lower one). It goes through the hollow spindle, and reaches the winding device through the upper thread guide. During this time, the cover yarn unwound from the bobbin fitted to the hollow spindle is wound around the surface of the core yarn at the yarn guide.

However, at this time, if the feeding speed of the core yarn on the supply side is made higher than the winding speed on the winding side,
It becomes an excessive supply and the excess becomes slack, but this slack is collected by the air jetting means by the air in the rising airflow generated in the hollow spindle at the yarn guide in the middle part, and loops, knots, etc. At the same time as it is formed, it is wound and fixed by a cover thread.

[0011] Thus, the cover thread is entwined in a reverse winding shape by the upper covering means on the surface of the thread having loops and knots formed, and the twist balance is adjusted to complete the product (fancy yarn), which is wound up. It will be wound up on the device.

In the above case, if the upper end of the lower hollow spindle is extended so as to approach the yarn guide in the middle, the looseness of the core yarn that floats on the rising air stream in the hollow spindle is surely secured. It will be collected at the middle thread guide. Further, when the core yarn is positively twisted, it becomes easy to form a loop in the core yarn.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings. 1 is an explanatory view schematically showing an example of the device of the present application, FIG.
Is an enlarged cross-sectional view showing the lower covering means, FIG. 3 is an enlarged cross-sectional view showing the relationship between the hollow spindle and the air jetting means, FIG. 4 is a perspective view showing an air flow guide cylinder forming the air jetting means, and FIG. FIG. 6 is an explanatory view schematically showing another example of the device of the present application, FIG. 6 shows a fancy yarn obtained by the device of the present application, (a) forming a loop, and (b) forming an irregular node. It was done.

In the figure, 1a is an upper covering means and 1b is a lower covering means. The hollow spindles 2a, 2b of the covering means 1a, 1b are vertically arranged in series via a thread guide 3 provided at an intermediate portion.

The covering means 1a, 1b have motors 4a, 4b for each hollow spindle 2a, 2b.
, And rotations in opposite directions (high-speed rotation up to about tens of thousands rpm) are provided. In this embodiment, the direct drive type is shown, but the belt drive type may be used.

Reference numeral 5 denotes a core yarn, which is pulled out from a winding ball 6, passes through a bar 7, a yarn guide 8 and a delivery roll 9 and passes through the inside of a hollow spindle 2b of a lower cover ring means 1b. After passing through the yarn guide 3 of the upper part, it passes through the inside of the hollow spindle 2a of the upper covering means 1a, passes through the upper yarn guide 10, the upper tension roll 11 and the traverse guide 12, and reaches the winding device 13.

On the surface of the core yarn 5, first, the cover yarn 16b unwound by the flyer 15b from the bobbin 14b fitted to the rotating hollow spindle 2b of the lower cover ring means 1b is guided by the yarn guide. It is wrapped around at 3. Next, the upper covering means 1
The cover thread 16a unwound by the flyer 15a from the bobbin 14a fitted to the rotating hollow spindle 2a of a is wound in the opposite direction at the upper thread guide 10.

When the hollow spindles 2a, 2b rotate at a high speed and the cover threads 16a, 16b unwound from the bobbins 14a, 14b fitted to the hollow spindles 2a, 2b can sufficiently form a spindle-shaped balloon, the flyer 15 is used.
The use of a and 15b may be omitted.

The lower covering means 1b is provided with an air ejecting means 17 for generating an ascending airflow inside the hollow spindle 2b. As shown in FIGS. 3 and 4, the air jetting means 17 includes an air flow guide cylinder 18 having a core thread passage hole 18a having a diameter substantially the same as the inner diameter of the hollow spindle 2b and a slight gap G from the core thread inlet 19 of the hollow spindle 2b.
The compressed air sent from a compressor (not shown) via an air pipe 18b is guided to the outer circumference of the airflow guide cylinder 18, and the hollow spindle is passed through vertical grooves 20 evenly arranged on the outer peripheral surface thereof. It is supplied into 2b.

The air jetting means 17 floats up the "slack" generated when the core yarn 5 is excessively supplied by the delivery roll 9 inside the hollow spindle 2b.
As shown in FIG. 2, it functions to gather around the yarn guide 3 in the middle part. Therefore, it is sufficient for the pressure of the compressed air to exhibit this function.

The function of the air ejecting means 17 is more efficient if the upper end of the lower hollow spindle 2b is extended so as to approach the yarn guide 3 in the middle through a pipe 21 which can rotate integrally with the hollow spindle 2b. Become.

FIG. 5 is the same as FIG. 1 except for the means 22 for imparting a twist to the core yarn 5, and the same parts are designated by the same reference numerals. The twisting means 22 is provided with a motor 23 and a spindle 24 rotated by the motor 22. By the rotation of the spindle 24, the twist corresponding to the number of rotations is positively imparted to the core yarn 5 drawn out from the bobbin 25 fitted to the spindle 24 through the yarn guide 26.

In the above embodiment, the feeding speed of the feeding roll 9 for the core yarn 5 is now set higher than the winding speed of the winding device 13, and the core yarn 5 is excessively supplied (about 30).
%), The "slack" of the core yarn 5 due to the excessive supply
Are gathered at the intermediate yarn guide 3 as shown in FIG. 3 by the rising air current generated in the hollow spindle 2b of the lower cover ring means 1b by the operation of the air jetting means 17, as shown in FIG. And so on.

In this way, the formed loop A and node B are
Bobbin 14b fitted in rotating hollow spind 2b
Cover thread 1 unwound by the flyer 15b
6b is wound and fixed at the thread guide 3.

Next, the core yarn 5 to which the loops A and the nodes B are fixed is transferred from the bobbin 14a fitted to the rotating hollow spindle 2a of the upper covering means 1a to the fryer 1a.
The cover thread 16a unwound by 5a is entwined in a reverse winding shape at the upper thread guide 10 to adjust the twist balance, and the loop A and the knot B as shown in FIGS. 6A and 6B are irregular. It will be completed as a fancy yarn F lined up with, and will be wound into a bobbin by the winding device 13.

In the above embodiment, only the fancy yarn in which the loops A and the nodes B are irregularly arranged is shown, but it goes without saying that the fancy yarn obtained by the device of the present application is not limited.

[0027]

As described above, according to the first aspect of the present invention, the cover thread means for winding the core thread passing through the rotating hollow spindle with the cover thread unwound from the bobbin fitted to the hollow spindle. Are arranged in the middle part above and below via a thread guide, and are raised so that the slack of the excessive supply of the core thread passing through the hollow spindle is collected in the lower part of the covering means in the vicinity of the middle part thread guide. Since the air jetting means for generating the air flow is provided, the fancy yarn can be manufactured in one step at low cost, which is an excellent effect.

According to the second aspect of the present invention, since the upper end of the lower hollow spindle is extended so as to approach the intermediate yarn guide, the excess supply of the core yarn that floats inside the hollow spindle. There is an advantage that the slack is surely collected near the intermediate thread guide.

Further, the invention according to claim 3 has an advantage that a loop is easily formed in the core yarn because the twist is positively applied to the core yarn.

[Brief description of drawings]

FIG. 1 is an explanatory view schematically showing an example of a device of the present application.

FIG. 2 is an enlarged cross-sectional view showing a lower covering member.

FIG. 3 is an enlarged cross-sectional view showing the relationship between a hollow spindle and air injection means.

FIG. 4 is a perspective view showing an airflow guide cylinder that constitutes air jetting means.

FIG. 5 is an explanatory view schematically showing another example of the device of the present application.

FIG. 6 shows a fancy yarn obtained by the device of the present application, in which (a) shows loops formed and (b) shows irregular knots formed.

[Explanation of symbols]

 1a, 1b Upper and lower covering means 2a, 2b Hollow spindle 3 Intermediate thread guide 4a, 4b Motor 5 Core thread 6 Winding ball 7 Bar 8 Thread guide 9 Feeding roll 10 Upper thread guide 11 Tension roll 12 Traverse guide 13 Winding device 14a, 14b Bobbin 15a, 15b Flyer 16a, 16b Cover thread 17 Air jetting means 18a Core thread passage hole 18 Airflow guide tube 19 Core thread inlet G gap 20 Vertical groove 21 Pipe 22 Twisting means 23 Motor 24 Spindle 25 bobbin 26 thread guide A loop B section

Claims (3)

[Claims] 1. Covering means for winding a cover thread unwound from a bobbin fitted on the hollow spindle around a core thread that has passed through a rotating hollow spindle, is arranged vertically at an intermediate portion via a thread guide. And, the lower covering means is provided with an air jetting means for generating an ascending air current so as to collect the slack of the excessive supply of the core yarn passing through the hollow spindle in the vicinity of the yarn guide in the intermediate portion. Fancy yarn manufacturing equipment. 2. The fancy yarn manufacturing apparatus according to claim 1, wherein an upper end of the lower hollow spindle is extended so as to approach the yarn guide of the intermediate portion. 3. The fancy yarn manufacturing apparatus according to claim 1, wherein the core yarn is provided with a twisting means.