JP2001354361A - Yarn winding method and bobbin package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a yarn winding method capable of securing sufficient tail thread length and forming a bobbin package for facilitating a removing operation of a tail winding part, and the bobbin package using the method. SOLUTION: In this yarn winding method, a yarn-exchanged yarn moderately moves to a winding region in a bobbin central part, forming the tail winding part smoothly or dividedly wound around between a yarn grabbing groove and a yarn winding layer. This bobbin package has a bobbin winding layer in the central region of a bobbin, and the tail winding part with 3 to 10 mm of width smoothly or dividedly wound around between the yarn winding layer and the yarn grabbing provided at the end of the bobbin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn winding method and a yarn winding package formed by the yarn winding method.

[0002]

2. Description of the Related Art In general, a wound package in which a synthetic fiber thread is wound on a bobbin is formed as shown in FIG.

FIG. 6 is a front view showing a conventional bobbin package, in which a bobbin layer 2 is formed in a central region of a bobbin 1, and a bobbin groove 3 for locking a bobbin end to be wound at the bobbin end. And a rod winding portion 4. Here, the bar winding portion 4 is provided as a means for fastening the yarn so that the yarn end is not unraveled from the bobbin 1, and the yarn is formed by winding up the yarn in one place.

However, when the user of the above-mentioned conventional bobbin package intends to use a plurality of bobbin packages in succession, the tail yarn Yt at the bobbin end of one bobbin package and the yarn layer of the other bobbin package are used. The tail yarn on the front side is spliced. In performing such splicing, in order to take out the tail thread Yt at the end of the bobbin, the rod winding portion 4 must be shifted to the bobbin end face side and removed.

Therefore, in the conventional bobbin package, the bobbin 4 is provided outside the bobbin with respect to the bobbin 3 as shown in FIG. I have. In addition, since the rod winding portion 4 is formed outside the yarn gripping groove 3 at the end of the bobbin in this way, for example,
The yarn switching method of the yarn winding machine having the bobbin holder includes:
This was performed as shown in FIG.

That is, FIG. 5 is a schematic view for explaining a yarn switching method of a conventional yarn winding machine. As shown in FIG. 5, when the bobbin 1 at the upper winding position is fully wound, two yarns are wound. Is rotated, the full bobbin 1 moves to the lower standby position A, and the empty bobbin 1 'at the lower standby position A is switched to the upper winding position. Next, the first yarn guide 5 for moving the yarn above the winding position moves in the bobbin axis direction, and catches the middle of the yarn Y traveling from the upper swing support point (not shown) to the full bobbin 1. The empty bobbin 1 'is moved to a position slightly beyond the extension line S of the thread holding groove 3 at the end.

Next, the yarn Y traveling between the first yarn guide 5 and the full bobbin 1 is moved to the second yarn guide 6 above the winding position.
′ (The shape is shown in FIG. 7) slides in a direction intersecting the traverse surface, and receives the yarn Y held by the first yarn guide 5 when the first yarn guide 5 returns to the original position, Since the third yarn guide (not shown) guides the yarn Y to the yarn holding groove 3 located at the end of the empty bobbin 1 ', the yarn Y is caught by the yarn holding groove 3 and the empty bobbin 1'. And is separated from the full bobbin 1 at the same time. The yarn Y wound on the empty bobbin 1 'is moved by the second yarn guide 6' by the yarn tension.
Because it is wound so as to be orthogonal to the bobbin axis,
The rod winding part 4 is formed in the outer region of the thread holding groove 3.

However, according to the conventional yarn switching method described above, when the second yarn guide 6 'returns to the original position and the yarn Y shifts to the normal winding region (traverse region) in the center region of the bobbin 1. Since the first yarn guide 5 has already returned to the original position, the yarn Y suddenly returns to the winding area due to the component of the winding tension toward the bobbin center, and can be used as the tail yarn Yt. The length is shortened.

As described above, the length of the tail yarn Yt is
It is necessary to secure a minimum length to connect between multiple bobbin packages.However, in the conventional bobbin package, the tail yarn length is unstable for the above reasons, and the necessary tail yarn length is obtained stably. Sometimes became impossible.

Further, as described above, in the conventional yarn switching method, the bar Y is formed by winding the yarn Y firmly and multiple times at the time of the yarn switching. In such a case, there is a problem that the removal cannot be performed smoothly, and there is a problem that the removal operation becomes very complicated.

[0011]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems, to secure a sufficient tail yarn length at the end of a bobbin, and to take out the tail yarn. It is an object of the present invention to provide a yarn switching method of a yarn winding machine which enables formation of a yarn winding package that facilitates automatic mechanization of an operation, and a yarn winding package thereof.

[0012]

In order to solve the above problems, a yarn winding method of the present invention mainly has the following constitution. That is, a mechanism having a plurality of bobbin holders so as to continuously wind the yarn on different bobbins, and simultaneously moving the plurality of bobbin holders in order to switch the winding of the yarn from a full bobbin to an empty bobbin. In the method of winding the yarn while switching the yarn by using the yarn winding machine having the above, when the bobbin at the winding position reaches the full winding state, the full bobbin is set to the standby position and waits at the standby position. The first bobbin, which replaces the empty bobbin that has been moved to the winding position, and then moves the intermediate portion of the yarn traveling from the swing fulcrum to the full bobbin in the upstream direction of the winding position in parallel with the bobbin axis direction. The yarn guide is slidable in a direction intersecting the traverse surface of the yarn between the yarn moving operation of the yarn guide and the winding position and the standby position of the full bobbin so that the contact portion with the yarn faces the bobbin center side. Slope or staircase shape that makes the mountain height The thread holding operation of the second thread guide and the thread catching operation of the third thread guide that guides the thread to the thread holding groove are engaged with the thread holding groove at the end of the empty bobbin and wound around the empty bobbin. A tail winding portion wound around the bobbin center rather than the yarn holding groove by winding the yarn in a state where the yarn path is regulated by the second yarn guide. ,.

[0013] In the yarn winding method of the present invention,
By setting the width of the tail winding portion in the range of 3 to 10 mm, it is possible to expect a further excellent effect.

Further, the wound package of the present invention has one of the following structures. That is, a bobbin is provided in the bobbin center region, and a tail bobbin having a width of 3 to 10 mm smoothly wound around the bobbin is provided between the bobbin layer and the bobbin groove provided at the end of the bobbin. A bobbin package or a bobbin layer in the bobbin center region, and a tail winding portion having a width of 3 to 10 mm divided and wound between the bobbin layer and a bobbin groove provided at an end of the bobbin. A thread winding package,

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings.

FIG. 1 is a schematic front view illustrating a yarn winding method according to the present invention, and FIG. 2 is a schematic side view illustrating a yarn winding method according to the present invention. (B) shows a state when the turret board is rotated by 180 ° from (A). FIG. 3 (A),
(B) is a front view showing a thread winding package according to the present invention, FIG. 4 is a schematic view illustrating the shape of a second thread guide according to the present invention, and (A) is a second thread guide having a slope at a mountain height; (B) shows a second thread guide having a stepped shape, respectively.

In FIGS. 1 and 2, a turret 10 supported on a rotating shaft 11 has a pair of spindles 12 and 1.
2 'is attached, and bobbins 1, 1' are mounted on the spindles 12, 12 ', respectively. The upper side of the pair of spindles 12 and 12 'is at the winding position, and the lower side is at the standby position.

A traverse device 13 is provided above the winding position on the upper side, and a swing support guide 15 serving as a supply point of the yarn Y is provided above the traverse device 13. The yarn Y supplied from the swing fulcrum guide 15 is
While being reciprocally traversed left and right by a, the bobbin 1 is wound up on the bobbin 1 at the winding position as the wound layer 2.

When the bobbin 1 at the winding position is fully wound, FIG.
As shown in FIG. 2A, when the turret board 10 rotates by 180 °, the full bobbin 1 moves to the lower standby position as shown in FIG. 'Moves to the upper winding position. When the position of the bobbin is exchanged in this manner, the yarn Y being wound on the lower full bobbin 1 passes through the yarn path regulating guide 1 along the way.
4 to form a yarn path leading to the full bobbin 1.

As described above, when the state shown in FIG.
The first yarn guide 5 that has been waiting outside the traverse area by the traverse guide 13a above the winding position moves laterally and penetrates into the traverse area as shown in FIG. The thread Y is hooked and removed from the traverse guide 13a, further advanced to near the end of the empty bobbin 1 ', and stopped at a position slightly beyond the extension S of the thread gripping groove 3. At this time, the yarn path of the yarn Y is bent by the first yarn guide 5 in a “<” shape as shown by a solid line in FIG. It is regulated and can be wound up on the full bobbin 1.

Next, the first yarn guide 5 and the traverse device 1
As shown in FIG. 1, the second thread guide 6 provided between
After sliding in a direction intersecting (perpendicular to) the traverse surface of the yarn Y and being disposed on the bobbin center side of the yarn Y traveling between the first yarn guide 5 and the swing support guide 15, the first yarn guide 5 returns to the original position and moves, and the yarn Y is moved to the second yarn guide 6.
Is regulated by the swing support guide 15. Next, the yarn Y is guided by the third yarn guide 7 into the yarn holding groove 3, is caught and wound up on the empty bobbin 1 ′, and is simultaneously separated from the full bobbin 1.

Since the yarn Y being wound on the empty bobbin 1 'is regulated by the second yarn guide 6, the yarn gripping groove is formed by the component of the winding tension toward the center of the bobbin as shown in FIG. 3 starts moving to the inside area,
As shown in (B), the shape of the contact portions 6a and 6b of the second yarn guide 6 with the yarn Y has a slope (6a) or a staircase shape (6b) in which the height is raised toward the center of the bobbin. Therefore, as the second yarn guide 6 slides and returns to the original position, it gradually returns to the winding area 2a, and the tail winding portion is smoothly wound around without forming a rod winding portion at the end of the bobbin. 16
a, or after forming the tail winding portion 16b wound in the divided loop, the yarn Y is released from the second yarn guide 6.

Here, the yarn Y is caught by the traverse guide 13a while returning to the winding area 2a, and thereafter forms the yarn winding layer 2 at the center of the bobbin while being traversed by the traverse guide 13a. And when it is full, FIG.
A thread wound package as shown in FIG.

The winding width of the tail winding portions 16a and 16b can be arbitrarily determined by the length of the sloped portion 6a or the stair-shaped portion 6b of the second guide 6 shown in FIGS. By adjusting the length of L to 3 to 10 mm, a tail winding portion having a winding width of 3 to 10 mm can be formed, and a sufficient tail yarn length can be secured.

As described above, according to the yarn winding method of the present invention, the switched yarn Y is provided with the yarn gripping groove 3 and the yarn winding layer 2.
While forming the tail winding part 16a wound smoothly around and the tail winding part 16b wound around the division,
Since the transition to the take-up area at the center of the bobbin is gradual, the thread that has been switched does not form a bar-wound portion at the end of the bobbin as in the conventional method. Mechanization becomes easy.

The second yarn guide 6, which has a slope 6a or a stepped shape 6b having a mountain height toward the center of the bobbin, causes a component force of the winding tension toward the center of the bobbin.
Since the yarn after the yarn switching does not suddenly return to the winding area and the yarn gradually moves to the winding area, the tail length is not shortened, and the obtained winding package has a stable and sufficient tail. It is possible to secure the yarn length.

[0027]

As described above, according to the yarn winding method of the present invention, the tail wound portion in which the switched yarn is smoothly wound around between the yarn holding groove and the yarn winding layer. While forming the tail winding part wound around the division, it gradually moves to the winding area at the center of the bobbin, so that the thread switched yarn forms a bar winding part at the bobbin end as in the conventional method Without winding, between the yarn winding layer and the yarn gripping groove provided at the end of the bobbin, a width of 3 to 10 m wound around in a smooth or divided manner.
It is possible to obtain a thread wound package having a tail winding portion of m, which facilitates automatic mechanization of the work of removing the tail thread.

Further, the second thread guide 6 having a slanted shape or a stepped shape having a mountain height toward the bobbin center side causes the yarn after the yarn switching by the component force of the winding tension toward the bobbin center. Since the yarn gradually moves to the winding area without suddenly returning to the winding area, the obtained yarn winding package can stably secure a sufficient tail yarn length without shortening the tail length. it can.

[Brief description of the drawings]

FIG. 1 is a schematic front view illustrating a yarn winding method of the present invention.

FIG. 2 is a schematic side view for explaining the yarn winding method of the present invention.

FIG. 3 is a front view showing the thread package of the present invention.

FIG. 4 is a schematic view illustrating the shape of a second yarn guide used in the yarn winding method of the present invention.

FIG. 5 is a schematic diagram illustrating a conventional yarn winding method.

FIG. 6 is a front view showing a conventional wound package.

FIG. 7 is a schematic diagram illustrating the shape of a second yarn guide used in a conventional yarn winding method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1 'bobbin 2 thread winding layer 3 thread gripping groove 4 rod winding part 5 1st thread guide 6, 6' 2nd thread guide 6a Slope which becomes mountain height 6b Stair shape 7 3rd thread guide 10 Turret board 11 Rotation axis 12, 12 'spindle 13, 13' traverse guide 14 yarn path regulation guide 15 swing fulcrum guide Y thread Yt tail thread 16 tail winding part 16a tail winding part smoothly wound around 16b tail winding part wound around and around

Claims (4)

[Claims] 1. A bobbin holder having a plurality of bobbin holders so as to continuously wind a yarn on different bobbins, and simultaneously switching the winding of the yarn from a full bobbin to an empty bobbin with the plurality of bobbin holders. In the method of winding the yarn while switching the yarn using a yarn winding machine having a moving mechanism, when the bobbin at the winding position has reached a full winding state, the full bobbin is moved to a standby position and then to a standby position. The empty bobbin waiting at the position is replaced with the winding position, and then the intermediate portion of the yarn traveling from the swinging fulcrum to the full bobbin can be moved on the upstream side of the winding position in parallel with the bobbin axis direction. Slidable in the direction intersecting the traverse surface of the yarn between the winding position of the first yarn guide and the winding position and the standby position of the full bobbin, so that the contact portion with the yarn is at the center of the bobbin. Inclined shape or staircase shape with a mountain height toward the side The empty bobbin is engaged with the thread holding groove at the end of the empty bobbin by the thread holding operation of the second thread guide having a shape and the thread hooking operation of the third thread guide for guiding the thread to the thread holding groove. A tail winding portion wound around the bobbin center closer to the bobbin than the yarn gripping groove by winding up the yarn in a state where the yarn path is regulated by the second yarn guide. How to take. 2. The method according to claim 1, wherein the width of the tail winding portion is 3 to 10 mm. 3. A bobbin having a bobbin layer in the center area thereof, and a tail bobbin having a width of 3 to 10 mm smoothly wound around the bobbin between the bobbin layer and a bobbin groove provided at an end of the bobbin. A bobbin package characterized by the following. 4. A bobbin having a bobbin layer in a central region thereof, and a tail winding portion having a width of 3 to 10 mm, which is divided and wound around the bobbin layer and a bobbin groove provided at an end of the bobbin. Characteristic pincushion package.