JPH02209366A - Traverse motion - Google Patents

Abstract

PURPOSE:To perform a smooth high-speed release by forming traverse grooves different in wind numbers, in a drum and installing a means which changes thread along a branch part of a yarn guide corresponding to each groove over to another groove different in wind numbers. CONSTITUTION:A two-wind groove 33 and a 3-wind groove 34 are formed in a drum 30 being rotated in direction of an arrow 31, and at time of traverse in the opposite direction, it is made to traverse along a 3-wind groove 35. A branch part for these grooves 33, 34 is formed in and around a turnup end, and a wind number of thread being wound according to whether thread being guided enters the groove 33 or 34 is changed. Each transfer of yarn guides Y2, Y3 is performed by a movable guide 39 to be moved to two positions by an electromagnet 41. Accordingly, with on-off operation of this electromagnet 41, the wind number of yarn is alternated and thereby the wind number is uniformly dispersed. Consequently, a tension variation at time of high-speed release is reduced, thus the high-speed release can be done smoothly.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a traverse device in a spinning machine, an automatic wine gourd, a double twisting machine, a false twisting machine, etc., equipped with a winding device.

[Conventional technology]

For example, an automatic wine gourd as shown in FIG. 8 is known that winds a spinning bobbin after spinning to form a corn package or a cheese package.

In such an automatic wine goo (20), the package (23) is driven in surface contact by a drum (22), which is called a traverse drum, and has a traverse groove (21) formed on the surface for traversing the yarn. The yarn feeding bobbin (24) is wound while swinging. When winding is performed using the traversing drum (22), when the drum diameter (D) and the package diameter (R) have a certain special relationship, in other words, the number of rotations of the drum and package is an integral multiple or When the winding diameter reaches a special relationship of - for an integer, the traverse cycle and the winding cycle of the package synchronize, the threads being wound pass through the same thread path, and the threads gather in the same place and overlap. , a phenomenon called so-called ribbon winding occurs.

Such ribbon winding causes sluffing, latching breakage, etc. when the yarn is unraveled in a subsequent process, and various ribbon winding prevention devices have been proposed and put into operation. For example, in automatic wine gourmets, there are types that mechanically move the package toward and away from the drum to cause the package surface to slip, causing thread dispersion, or types that periodically apply brakes to the drum, also causing slips. As disclosed in Japanese Unexamined Patent Publication No. 62-161681, there is a type that detects the vicinity of the ribbon winding diameter and activates the ribbon winding prevention device only in a dangerous area.

[Problem to be solved by the invention]

Packages wound using such conventional ribbon winding prevention devices have shown some degree of effectiveness, but cannot sufficiently withstand the high-speed unraveling of recent years. That is, for example, when unraveling packages supplied to a warping machine, a loosening speed of 300 to 600 m/min did not pose a major problem, but in recent years, the unraveling speed of 600 to 1000 m/min has increased.
Problems such as sluffing occur when unraveling yarns at high speeds, and high-speed textile machines, such as those that supply the weft yarn using air jets, have an unraveling speed of 80 mm.
0 to 1500 m/min, and the above-mentioned troubles occur frequently and become a big problem.

The present invention aims to solve the above problems.

[Means to solve the problem]

According to the present invention, grooves with different numbers of winds are formed in a drum having grooves for directly or indirectly traversing the yarn, and a branching part is formed in the drum to sort the yarn to a yarn path corresponding to the groove with the above-mentioned number of winds. In addition, a switching means is provided for switching the yarn reaching the branching portion to a groove having a different number of winds.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

Note that the ribbon winding diameter (R+++m) is generally determined by the following formula.

-W For example, in the case of D = 100 mm and D-W = 2 winds, the ribbon generation diameter of 1 wind of the package (R1
) becomes R1 = 100 X2/1 = 200 (+yun), and when the package has a diameter of 200 mm,
10 Ribbon winding (25) (26> as shown in the figure) occurs. That is, in this case, during one traverse of the thread starting from point (A), the point where the left thread and the right thread intersect ( There is only one point (C) (hereinafter referred to as the intersection point (C)).Therefore, when unraveling such a package, the thread from one intersection point (C) to the next intersection point (C) is in a free state. ,
Therefore, high-speed melting tends to cause sluffing.

Next, embodiments of the present invention will be described with reference to FIGS. 1 to 5.

FIG. 1 is a perspective view of the main parts of the wine goo, showing the drum (30) that directly traverses the yarn.

The traverse grooves formed on the drum (30) are formed as grooves with different numbers of winds. That is, when the drum (30) rotates in the direction of the arrow (31), the thread moves from right to left in the direction of the arrow (31).
32) with a different number of winds, so that when traversing in the direction, the drum is traversed by either the two-wind groove (33) or the three-wind groove (34).
(33)(34) are formed. Note that the traverse in the direction of the arrow (36) from left to right is traversed along the 3-wind traverse groove (35). (37)
is a yarn splicing device installed in the wine ring.

In this embodiment, the number of winds of the traversing groove formed on the drum (30) is 2 winds and 3 winds to make the explanation easier to understand, but of course other combinations of different numbers of winds are also possible. For example, 3 winds and 4 winds, 1.5 winds and 2 winds, etc. are possible, and in the drum shown in Figure 1, the traverse groove from right to left is 2 winds and 3 winds, but from left to right. It is also possible to traverse the traversal direction by using traversing grooves with different numbers of winds.

FIG. 2 is a developed view of the drum (30) shown in FIG. 1 above. The groove for traversing from right to left is the groove for 2 winds (
33) and a 3-wind groove (34) are formed, and a branching part (38) to the above two types of grooves is formed near the right-hand folded end. That is, the 2-wind groove (33) has the symbol (a
) (b) (c) (d) (e) (f), the groove for 3 winds (34) has the symbol (n) (o
) (p) (q) (r) (c) (d) (e)
A part of the groove shown in (f) is shared. In addition, the groove (35) for traversing from left to right is marked (g).
(h) (i) (j) (k) (1) (+n)
In this case, it is a 3-wind groove.

Therefore, at the branching part (S) of the grooves (a) and (n), the number of winds of the yarn wound into the package depends on whether the guided yarn enters the groove (a) or the groove (n). It changes. That is, the solid line thread path (Y
3), 3 winds from right to left, broken line thread path (
Y2), the number of winds is 2 winds.

The switching means for the yarn path (Y2>(Y3)) will be explained next.

As the first means, a passive switching means by adjusting the thread tension can be applied. In other words, the thread path is automatically switched by inertial force during the traverse movement of the thread or by fluctuations in tension of the thread. For example, according to experiments,
When we changed the tension value using a known tension device that nip the thread between two pressers, we found that when the tension value was small, the probability of entering the 3-wind groove was lower than that of the 2-wind groove. When the tension value is larger than the probability of entering groove 8 (a) (n), the opposite is true. Therefore, by setting the tension value to an intermediate value, there is a 50% probability of entering groove 8 (a) (n).

As the second switching means, active switching means using mechanical means can be applied. An example is shown in FIG. 1 and FIGS. 3 to 5. That is, a movable guide (39) for regulating the yarn path is provided on the switching portion (38) side of the grooves (a) and (n) of the drum and within the yarn traverse area. The movable guide (39) is located between the drum (30) and the guide member (40) at the center of the yarn traverse, and is located between the electromagnet (41).
) to move to the second position. In Figure 3.4, the movable guide (39) is mounted on a fixed plate (42) with a pivot support (
43), one end of the guide (39) forms a first guide edge (44) that positions the thread (Y) at the traverse end slightly inside than the normal traverse end, and the middle part has a thread A second guide edge (45) is formed to guide the yarn to the normal traverse end, and an attraction piece (46) that attracts the electromagnet (41) is also formed.

Further, a magnet (47) is fixed to the other end, and is provided opposite to the magnet (48) provided on the fixed plate (42). Each of the above magnets (47) (48
) are of the same polarity (S-3 or CN-N) and are biased in the repulsive direction.

That is, when the electromagnet (41) is energized and the attraction piece (46) of the movable guide is attracted to the attraction surface (49) of the electromagnet, the magnets approach each other, increasing the repulsive force and cutting off the electricity to the electromagnet. The repulsive force acts to instantly return the movable guide (39) to its original position.

Therefore, when the movable guide (39) is in the position shown in Figure 3, that is, when the electromagnet (41) is off, the thread (Y) traverses to the right along the arrow (50), and the first guide edge ( 44
), and as a result, the thread path (Y2) in FIG. 1 is taken. Therefore, the yarn after folding enters into the two-wind groove (a). On the other hand, when the movable guide (39) is in the position shown in Fig. 5, that is, when the electromagnet (41) is on, the movable guide (39)
) is displaced and the thread (Y) that performs a rightward traverse along the arrow (50) is the first guide! ! (44) and moves along the second guide edge (45) to the normal traverse end without being blocked by. As a result, the yarn path assumes the solid line position (Y3) in FIG. 1, and the yarn after turning enters the 3-wind groove (n).

Therefore, if the movable guide (39) is moved every traverse, the yarn will alternately repeat two winds and three winds every traverse. In addition, the on/off timing of the electromagnet can be set at any time, and 2
The number of repetitions of wind winding and three wind winding can be set as appropriate. Furthermore, it is possible to change the 2-wind and 3-wind winds periodically or randomly, but overall the 2-wind and 3-wind winds are set to be 50% each. It is preferable.

In addition to the wind number switching means using the electromagnet described above, various means can be applied. For example, the movable guide (39)
2 in FIG. It is also possible to have two thread paths (Y2) (Y3).

The method for winding a yarn using the winding device shown in the first figure above is described in the sixth section.
This will be explained in the figure. The diameter of the drum (30) is D,
When the traverse groove uses the drum shown in Fig. 2 and the movable guide <39) is applied as the switching means, the package diameter is 2.
The winding state at the time of D is shown in FIG.

By the way, Figure 6 is an exploded view of the package.

In this case, when going left (51), it switches to the 2-wind groove and the 3-wind groove, and when going right (52), there is only 3 wind, so the rightmost point (0) is now the starting point of the traverse. Then, starting from the thread path (1) for 3 winds, the thread passes sequentially through (2) - (3) - (4) and returns to point (0), at which time the movable guide (39) is positioned at the position shown in Figure 3. Then, during the subsequent leftward movement, the thread enters the 2-wind groove (a) as described above and moves from the thread path (5) to (6) - (7) - (
8) Pass through -(9) and reach the point (Q) at the right end of the package.

At this time, if the movable guide (39) is moved again and positioned at the position shown in Fig. 5, the thread will be moved to the thread path for 3 winds (10) - (11) - (12) → (13). −(
14), and further, the thread path for 2 winds (15) - (16) - (17) → (1
8) becomes -(0) and returns to the original starting position (0). In other words, it takes four traverses to return to the original position.

Therefore, the intersection point of the thread between the above four traverses is (CI)
- (C2) → (C3) --- (CI2) in order, total 1
This will occur in two places. For example, at the intersection point (C1), the threads that create the intersection point are the threads indicated by symbols (2) and (3), which intersect so that the thread (3) with the larger number is located above thread (2). There is. The same applies to other intersection points.

FIG. 7 shows the state of the intersection of the ribbon winding diameters of the conventional wine goo and the puff cage wound according to the present invention. For example, the diameter of the traversing drum is (D), and the number of winds of the drum is 2 winds and 3 winds in both directions in the conventional case, and the case of the drum shown in the second figure according to the present invention are shown. In other words, in the conventional two-wind drum, the package diameter is 2D and there is one intersection point (P2).
However, in the present invention, even at a position where the package diameter is 2D, the package has 12 intersections (P8). Further, in the conventional three-wind drum, the package diameter is 3D and there is one intersection point (P6), but in the present invention, even when the package diameter is 3D, there are 18 intersection points (P9). In other words, the fewer the intersections, the more
Since the yarn paths in the ribbon winding diameter pass through the same path, the ribbon winding density is high, and a large number of yarns pass through the same path, causing the yarn path to protrude greatly, resulting in severe tension fluctuations during unwinding.

On the other hand, as in packages (P8) and (P9), the fact that there are many intersections in the ribbon winding diameter means that the number of yarns passing through the same path is small, so the ribbon is dispersed, and tension fluctuations are reduced during unraveling. Sluffing and thread tangles are less likely to occur.

Next, Table 1 shows the degree of dispersion of the number of package winds obtained by the winding device according to the present invention. The experiment was conducted using cotton thread N.
e 40, yarn speed 10001 Tl/min,
As a means for switching between the 2-wind and 3-wind grooves of the drum, a passive means using only thread tension and an active means using a movable guide (39) for switching shown in FIG. 1 were examined. In Table 1, in the case of the passive method, when the tension value was set to 15 g, the thread was slowly unwound from the wound package, and the experimenter made 2 winds or 3 winds.
For example, the package shown in Figure 7 (
If you look at the number of winds of the thread unraveled from left to right on page 8), you will find 3 and 2 as shown in the top row of Table 1.
, 3, 3 3. 3, the 2-wind yarn was used 3 times, and the 3-wind yarn was used 7 times.

When measured in the same way, the tension value was 15 grams (g
), there were 19 2-winds and 31 3-winds, and the ratios of 2-winds and 3-winds were 38% and 62%.

Also, when the tension value is 23g, the ratio of 2 wind and 3 wind is 52% and 48%, similarly when the tension value is 3
In the case of 0g, it was 72% and 28%. That is, the probability of automatically switching between the 2-wind groove and the 3-wind groove when the tension value is around 23 g is 172.

On the other hand, when active means is used, when the movable guide is operated for each traverse, 2 winds and 3 winds appear almost alternately as shown in Table 1, and the number of winds is evenly distributed.

In other words, it stably switches to the valley groove regardless of the tension value.

Table 1 The above explanation deals with the case where the yarn is directly traversed by the traversing drum, but of course a traverse guide is fixed to the shaft extending between the winding units, and a groove similar to the groove formed on the drum above is formed at the end of the shaft. By interposing a camshaft on a drum having cam grooves with different wind numbers,
It is also applicable to a type of winding machine that simultaneously traverses yarns in a plurality of winding sections. In this case, active means is required to switch the camshaft 21 to a groove with a different number of winds, and it is necessary to provide the movable guide shown in the first figure at a position where it abuts the cam shoe.

〔Effect of the invention〕

As described above, in the present invention, regardless of the ribbon winding diameter, the yarns have many intersections and tend to disperse along the same path, which reduces sluffing and tension fluctuations during high-speed swarming. This makes it possible to produce packages that can be easily unpacked.

4. Furthermore, the thread can be reliably switched to a groove with a different number of winds, and a high-quality package can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a main part showing an embodiment of the present invention, FIG. 2 is a developed view of a traversing drum, and FIG. 3 is a plan view showing an example of active means for switching the yarn to grooves with different wind numbers. Figure 4 is a front view of the same, Figure 5 is a plan view showing the operating state of the means, and Figure 6 is a front view of the same.
The figure is a developed view showing the thread path at the ribbon winding diameter of the package wound by the apparatus of the present invention, FIG. 7 is a schematic developed view showing the difference in the thread path between the conventional package and the package according to the present invention, and FIG. The figure is a perspective view showing an example of a conventional winding device.
FIGS. 9 and 10 are package front views showing the state of ribbon winding at the ribbon winding diameter obtained by the conventional apparatus. (30) Traverse drum (33') 2-wind traverse groove (34) 3
Wind traverse groove (38) Branch part (39) Movable guide (Y2> (Y3) Thread guide

Claims (1)

[Scope of Claims] Grooves with different numbers of winds are formed on a drum having grooves for directly or indirectly traversing the yarn, and the drum has a branching section in which the yarn is distributed to yarn paths corresponding to the grooves with different numbers of winds. 1. A traverse device characterized in that the traverse device is formed with a switching means for switching the thread reaching the branching portion to a groove having a different number of winds.