JP2733794B2 - Yarn traverse device - Google Patents

Description

The present invention relates to a yarn traversing device. More specifically, the present invention relates to a yarn traversing device capable of traversing a yarn such as a synthetic fiber at a high speed without generating a traverse on an end face of a package being wound.

[Conventional technology]

The applicant of the present application has previously described a novel yarn traverse device, in which a contact roller is pressed against a bobbin holder equipped with a bobbin, the yarn is traversed by a traverse device, and the yarn is wound around the bobbin to form a package. A first traverse means for moving the yarn from the center of the traverse stroke to both ends downstream from the traverse fulcrum disposed at a predetermined distance from the traverse fulcrum disposed upstream of the winder in the above-described yarn winding machine. And second traversing means for moving the yarn from both ends of the traverse stroke toward the center at a predetermined distance from the first traversing means downstream of the first traversing means. Moving the yarn from the center of the stroke toward the end by the means, carrying the yarn conveyed to the end by the second traverse means from the end of the stroke toward the center, and then The yarn carried by the first traverse means is moved from the center of the stroke toward the other side, and the yarn carried to the end is transferred to the second traverse means from the end of the stroke toward the center. The yarn conveyed to the center is sequentially delivered to the first traversing means, and the yarn conveyed to the traverse end by the first traversing means is engaged with the second traversing means and The yarn is released from the first traverse means after the yarn is guided by the second traverse means to the first traverse means and to a position which is bent toward the center of the traverse from a position where the point of contact with the contact roller is straightened. A yarn traversing device characterized in that the traversing device has been proposed (Japanese Patent Application No. 110133/1990).

In the proposed device, the yarn is transferred from the rotation guide that moves the yarn toward the traverse end at the traverse end to the rotation guide that moves the yarn toward the center of the traverse immediately after the yarn is transferred near the center of the traverse. A method of accelerating and moving to a speed higher than the speed is adopted.

However, in order to perform the above-described acceleration, the angle between the contact between the rotation guide that moves the yarn in the traverse center direction and the point where the yarn comes into contact and the traverse movement direction is large (160).
゜ degree) was set.

[Problems to be solved by the invention]

According to the above proposed device, at the time of delivery of the yarn, since the angle between the tangent at the point where the yarn comes into contact with the rotation guide for moving the yarn in the traverse center direction and the traverse movement direction is large, the yarn is rotated by the rotation guide. In other words, there is a problem that the position where the contact is made, that is, the position where the yarn is reversed is not stable, and the yarn is detached from the end surface of the wound package, that is, a so-called shedding occurs.

In addition, when the angle between the tangent line of the point where the yarn contacts and the traverse direction is reduced, the amount of yarn accumulation at the yarn transfer portion increases, and a large ear height is generated on the peripheral surfaces at both ends of the package, and the There is a problem that the value of the product is reduced, and furthermore, there is a problem that the winding speed is reduced at the center of the traverse stroke during winding and the yarn is broken.

SUMMARY OF THE INVENTION An object of the present invention is to provide a yarn traversing device capable of solving the above-mentioned problem and traversing the yarn at a high speed without causing the traverse.

[Means for solving the problem]

In the present invention, in the yarn traversing device for traversing the yarn by the rotation guide pair, a plurality of pairs of rotation guides rotating in opposite directions to form a pair with the above object,
The upper rotation guide disposed on the upstream side of the pair of rotation guides moves the yarn from the center of the traverse stroke toward the end of the traverse stroke, and is located downstream of the upper rotation guide at a predetermined distance from the upper rotation guide. The disposed lower rotary guide carries the yarn from the end of the traverse stroke toward the center of the traverse stroke, and the lower rotary guide comprises guides disposed in two upper and lower stages. Achieved by equipment.

In the present invention, as shown in the embodiment, the angle between the tangent line of the contact point of the guide disposed at the upstream side of the lower rotation guide with the thread and the traverse movement direction is α, and the lower rotation guide The angle between the tangent line of the contact point with the thread of the guide disposed on the downstream side of the inside and the traverse movement direction is β,
It is preferable to provide a yarn traversing device in which the relationship between the two angles satisfies α <β.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic view of the winder of the present invention as viewed from the front.

The yarn Y is drawn by, for example, a drawing device (not shown), passes through the traverse fulcrum snail guide 8, and is taken up by the winding device 1.
It is wound up by.

The take-up device 1 is provided with a slide block 2 movably in the vertical direction, and a contact roller 4 is rotatably supported on a frame 9 projecting from the slide block 2.

A traverse device 3 is further provided at a position above the contact roller 4 of the frame 9.

At a position below the slide block 2, the winding device 1
The bobbin holder 5 is rotatably supported, and two bobbins 6 are mounted on the bobbin holder 5, and the bobbin holder 5 is frictionally driven by the contact rollers 4.

At the time of winding, the yarn Y contacts the contact roller 4 at a point P while being traversed left and right (in a direction perpendicular to the paper surface) by the traverse device 3 and is wound around the contact roller 4 for a predetermined angle. It is wound up as a package 7 above.

Traverse device 3, the left and right detachable from the frame 9 by a bolt 10 two units U _L, made U _R (Figure 2, Figure 3, Figure 4), each unit U _L, L _R is the bobbin holder 5 Corresponds to the bobbin 6 attached to the.

FIG. 2 is a partial plan view of an embodiment of the traverse device according to the present invention, FIG. 3 is a plan view of the unit in FIG.
The figure is a cross-sectional view of one of the main rotating parts of the traverse unit shown in FIG.

As shown in Figure 4, the unit U _L and U _R constituting the traverse device 3 is constituted by the upstream traverse unit U ₁ and the downstream-side traverse unit U _2, respectively.

The upstream traverse unit U _1, is provided with blades 23 and 24 for swinging Aya the yarn. Also, the traverse unit U ₂ on the downstream side is made of yarns which are located at upper and lower two stages from the vanes 25, 45 and 26, 46 for shake Aya.

These blades 23 to 26, 45, and 46 are driven to rotate by two sets of right and left gear trains 29, 30, and 31 supported by bearings (no number).

The distal end portion of the frame 9 described above, as shown in FIG. 2, the motor 43 is provided, rotation of the motor 43 is transmitted to the gear 29 through the gear 47 of the unit U _L from the gear 44. gear
29 further meshes with the adjacent gear 32, and the gear 32 is a gear
Power is transmitted to the unit U _R via 39.

The In Figure 4, the upper end portion of the rotary shaft 11, the bracket 11a, 12a is provided at the lower end, each bracket 11a, 12a upstream traverse unit U ₁ of the vanes 23, 24 and the downstream traverse unit U ₂ The blades 25, 26 or 45, 46 are mounted on the rotating shafts 11, 12.

The blades 23 and 24 of the upstream traverse unit U ₁ (hereinafter also referred to as first traverse means) carry the yarn Y from the center of the traverse stroke to both ends. On the other hand, the blades 25, 26 and 45, 46 of the downstream traverse unit U ₂ (hereinafter also referred to as second traverse means) carry the yarn Y from both ends of the traverse stroke toward the center.

As is clear from FIG. 4, the traverse units U ₁ and U ₂ each have a rotation plane of the blade and a plane formed by the traversing of the yarn orthogonal to each other, or the tip of the blade is slightly downstream. It is arranged so as to be inclined (in the embodiment, it is inclined at 37 °).

As shown in Figure 4, the second traverse means U ₂ of the guide 45 is disposed upstream of the guide 25, the guide 46 is disposed upstream of the guide 26, without the two-stage guide forms ing.

Spacing between spacing and vane 26, 46 between the blades 25 and 45 of the second second stage guides the traverse unit U ₂ is not necessarily the same. Further, the upstream guides 45 and 46 and the downstream guide 2
5 and 26 may be either an integrated type or a separated type.

The arrangement of the guides 25 and 26 and the guides 45 and 46 in this embodiment will be further described.

In FIG. 7A, the angle between the tangent line L of the contact point Q of the upstream guides 45 and 46 with the yarn Y and the traverse movement direction T is β. Also, the yarn Y of the downstream guides 25 and 26
The angle between the tangent line M of the contact point R with the traverse movement direction T is α. In this embodiment, the guides 25, 26, 45, and 46 are attached so that the relationship between the angles α and β satisfies α <β.

The angles α and β are 90 ° ≦ α ≦ 150 ° and 150 ° ≦ β
≦ 170 ° is preferable, and in this embodiment, α = 150 °, β
= 160 ゜.

In FIG. 3, the plate-like guide 37 is fixed to the unit U _1, the plate-like guide 38 is fixed to the unit U _2. The shapes of the guide rails 37a, 38a formed on the guides 37, 38 are as follows:
When the yarn is carried by the blades 23, 24 and 25, 26, 45, 46, the moving speed of the yarn Y traversing along these guide rails 37a, 38a is selected to be substantially constant. ing.

The arrows in FIG. 2 and FIG.
The rotation direction of 24, 25, 26 is shown.

With the above configuration, the center the yarn carried toward the end of the traverse stroke by the first blade 24 of the traverse unit U _1, it reaches the traverse stroke end upstream of the second traverse means U ₂ of the two-stage guide Of the second traverse means, and then the downstream blades of the second traverse means.
Delivered to 26 and turned back towards the center of the traverse stroke. Then, feeding of the yarn Y is taken over from the middle of the traverse stroke to the first traverse means U ₁ of the blade 23, when brought to the traverse stroke end by the blade 23 upstream of the second traverse means U ₂ of the two-stage guide is delivery to the blade 45, then 2 of the second traverse means U ₂
It is delivered to the blade 25 on the downstream side of the step guide, and is turned back toward the center of the traverse stroke again. The traversing action is repeated as described above.

Hereinafter, the method for transferring the yarn at the time of traverse according to the present invention will be described in more detail with reference to FIGS. 5, 6 and 7.

The Figure 5 shows a state of moving the yarn Y to the left by the first blade 24 of the traverse unit U _1.

Yarn Y and reaches the turn portions of the traverse stroke (condition of), the blade 46 and the yarn Y on the upstream side of the second two-stage form of the traverse unit U ₂ which rotates the blade contact toward the right direction However, the blade 24 carries the ridge Y further leftward.
Yarn Y to a position slightly bent from the position where the position of the contact and the blade 46 with the contact roller 4 are connected by a straight line is transported, where the yarn Y is on the upstream side traverse unit U ₁ guide rail 37a and the engaging And removed from the wings 24.

The yarn Y removed from the blade 24 is transferred to the blade 46 and then transferred to the blade 26 provided on the downstream side of the blade 24, and is carried rightward by the blade 26 (FIG. 6).

When the yarn Y is brought into the vicinity of the center of the traverse stroke, as shown by in FIG. 6, first traverse means U ₁ of the blade 23 to the yarn Y carry the right engages. The first traverse means U ₁ of the vane 23 is in and upstream a predetermined distance from the second traverse means U ₂ on the downstream side of the blade 26. At this time, the yarn Y that has been carried by the vanes 26 engages the guide rail 38 of the traverse unit U ₂ on the downstream side, the vane
Removed from 26. Thus, the yarn Y, as shown by in FIG. 6, are conveyed to the right by the first traverse means U ₁ of the blade 23.

Next, when the yarn Y reaches the end of the traverse stroke and the yarn Y conveyed by the blades 23 reaches the turn portion of the traverse stroke (the state shown in FIG. 6), the second traverse rotating leftward. Although blade 45 and the yarn Y on the upstream side of the blade where the two-stage form of means U ₂ are in contact, the blade 23 carries a yarn Y further rightward, the position of the contact and the blade 23 with the contact roller 4 DOO is the yarn Y at a position slightly bent from positions connected by a straight line is removed from the upstream side of the traverse unit U ₁ of the guide rail 37a engaged with the blade 23.

After the yarn Y removed from the blade 23 is delivered to the blade 45,
It is delivered to the blade 25 and is carried by the blade 25 to the left as shown in FIG.

Further, as shown in FIG. 5, when the yarn Y is conveyed to the vicinity of the center of the traverse stroke, the first traverse means U _{1 at a} predetermined distance from the blade 25 and on the upstream side.
The blade Y and the yarn Y are engaged with each other and are carried by the blade 24.
At this time, the yarn Y is removed from the blade 25 engages the guide rail 38a of the traverse unit U ₂ on the downstream side, is conveyed leftward by the blade 24 as the yarn Y is denoted by in FIG. 5 .

Thereafter, the above delivery is repeated, and the package 7 is formed on the bobbin 6 mounted on the bobbin holder 5. When the yarn Y reaches the traverse end, as shown in FIG. 7 (a), the yarn Y comes into contact with the blade 46, is detached from the blade 24, is transferred to the blade 46, and is then transferred to the blade 26. Is done.

At this time, in order to prevent the yarn Y from being affected by inertia or from suddenly changing the tension at the moment when the yarn Y is detached from the blades 24 and 46, the yarn Y Forming a groove portion 26a extending in the direction, the yarn Y from the blade 24 to the blade 46,
Also, when the yarn Y is transferred from the blade 46 to the blade 26, the yarn Y
It is regulated by 26a.

In the present embodiment, after the blade 45 receives the yarn Y conveyed to the end of the traverse stroke by the blade 23, the blade 25 receives the yarn Y, but the blades 45 and 25 simultaneously
May be received. The same applies to the blades 24, 46, 26.

In this embodiment, the traverse device for winding two packages on the bobbin holder has been described.
The number may be more than one.

Further, the winding machine may be an automatic winding machine having a plurality of bobbin holders.

〔The invention's effect〕

According to the yarn traversing device according to the present invention, since the second traverse means is in the form of a two-step guide, the two-step guides are sequentially engaged with the thread when the yarn is transferred at the end of the traverse. The angle between the traverse movement direction of the yarn and the tangential direction of the blade can be made smaller than that of the prior art. For this reason, at the traverse end, the return of the yarn is stabilized.

In addition, the combination of the downstream blade of the two-stage guide and the upper rotary guide arranged on the upstream side allows the yarn moving speed to be freely set, and provides a good quality with no ear height and twill drop even at high speed winding. A package can be obtained, and unevenness in the quality of the wound yarn can be prevented.

[Brief description of the drawings]

1 to 3 show an embodiment of a yarn traversing device according to the present invention, FIG. 1 is a schematic front view of a winding machine incorporating the traversing device of the present invention, and FIG. FIG. 3 is a partial plan view of the traverse device according to the embodiment of the present invention, FIG.
FIG. 4 is a cross-sectional view of the main rotating part of the traverse unit shown in FIG. 3, FIG. 5 and FIG. 6 are explanatory diagrams for explaining the delivery state of the yarn when the yarn is traversed in time series. FIG. 7 is a plan view showing the shapes of the blades 25, 26, 45, 46 and the carrying of the yarn. Y Thread, 1 Winding device, 3 Traverse device, 4 Contact roller, 5 Bobbin holder, 23, 24 First traverse means, 25, 26, 45, 46 2 traverse means, 37, 38 ... Thread guide.

Claims (2)

(57) [Claims] 1. A yarn traversing device in which a plurality of pairs of rotating guides which rotate in opposite directions and are adjacent to each other and traverse the yarns by the pair of rotating guides, an upstream side of the pair of rotating guides is provided. The upper rotating guide moves the yarn from the center of the traverse stroke toward the end of the traverse stroke, and the lower rotating guide disposed at a predetermined distance from the upper rotating guide downstream of the upper rotating guide is a traverse stroke. A yarn traversing device, wherein the yarn is conveyed from the stroke end to the center of the traverse stroke, and the lower rotation guide is composed of guides arranged in two upper and lower stages. 2. An angle between a tangent line of a contact point of a guide disposed at an upstream side of the lower rotation guide with a thread and a traverse movement direction is α, and the angle is formed at a downstream side of the lower rotation guide. 2. The yarn according to claim 1, wherein the angle between the tangent line of the contact point with the yarn of the guide and the traverse movement direction is β, and the relationship between the two angles is α <β. Traverse device.