JPH03177270A - Taking-up device for thread - Google Patents

Abstract

PURPOSE:To take up a taking-up package which endures the high speed release without carrying out ribbon winding by forming different number of winding grooves and branching parts for assorting threads into thread passages corresponding to different number of winding grooves on a drum and installing a changeover guide which is operated by the traverse of thread and positively assorts threads by the branching part. CONSTITUTION:Different number of winding grooves and branching parts 1 and 2 for assorting threads into the thread passages corresponding to different number of winding grooves are formed on a drum having the grooves for direct ly or indirectly traversing threads. Changeover guides 3 and 4 which are operat ed by the traverse of thread and positively assort threads in the branching parts 1 and 2 are installed. The changeover guides 3 and 4 are operated when the thread traverses and is caught by the changeover guides 3 and 4, and threads are positively assorted to the thread passages corresponding to different number of winding grooves in the branching parts 1 and 2. The assortment patterns can be made complicate to some extent.

Description

Detailed Description of the Invention A. Object of the Invention [Field of Industrial Application] The present invention relates to a yarn winding device for a spinning machine, an automatic winder, a double twisting machine, a false twisting machine, etc. having a winding device. It is something.

[Conventional technology]

In a yarn winding device such as an automatic winder, a winding package is driven in contact with a traversing drum having a traversing groove formed on its surface for traversing the yarn, and a yarn supplying bobbin can be wound while traversing. It is being said.

When winding yarn using the traverse drum in this way,
When the winding diameter of the winding package reaches a special relationship in which the rotational speed of the traversing drum and the winding package is an integral multiple or a fraction of an integral number, the traversing period and the winding period of the winding package are synchronized. As a result, the threads to be wound pass through the same thread path, and the threads gather in the same place and overlap, resulting in the so-called ribbon winding phenomenon.

Such ribbon winding causes sluffing, latching breakage, etc. when the yarn is released in a subsequent process, and various ribbon winding prevention devices have been proposed and put into operation.

For example, in an automatic winder, the winding position is dispersed by mechanically moving the winding package toward and away from the traversing drum, or by periodically applying a brake to the traversing drum to cause the surface of the winding package to slip. There are those that cause the ribbon winding to occur, and those that activate the ribbon winding prevention device only in dangerous areas (see Japanese Patent Application Laid-open No. 161681/1983).

[Problem to be solved by the invention]

Although the above-mentioned conventional ribbon winding prevention device is effective to some extent, it cannot sufficiently withstand the high-speed release in recent years. For example, when releasing yarn from packages supplied to a warper, 300 to 60
It was not a big problem when the speed was reset to 0m/min, but
In recent years, when releasing at high speeds of 600 to 1000 m/win, troubles such as sluffing occur. In addition, in the case where the weft is supplied by an air shed,
The yarn release speed is as high as 800 to 1500 m/min, and the above-mentioned troubles occur frequently, posing a major problem.

The present invention aims to provide a yarn winding device capable of winding up a package that does not involve ribbon winding and can withstand high-speed unwinding. [Means for solving the problem] In order to achieve the object, the yarn winding device of the present invention provides a drum having grooves for directly or indirectly traversing the yarn, grooves with different numbers of winds, and threads in the yarn paths corresponding to the grooves with different numbers of winds. It forms a branch part that distributes the
It is equipped with a switching guide that is activated by the traverse of the yarn and actively distributes the yarn at the branching section.

[For production]

In the yarn winding device configured as described above, when the yarn traverses and gets caught in the switching guide, the switching guide is activated, and the yarn is actively moved into the yarn path corresponding to the grooves with different wind numbers at the branching section. be distributed to. The distribution pattern can be made somewhat complex.

〔Example〕

Before describing the embodiments, first, the relationship between the ribbon winding diameter of the winding package and the diameter of the traversing drum will be described.

If the ribbon winding diameter of the winding package is R (mm), the number of winds of the winding package is Pw, the diameter of the traverse drum is Dr (mm), and the number of winds of the traverse drum is Dw, then the ribbon of the winding package is The winding diameter is determined by the following formula.

Dw R=D r
is R1=100X2/1=200(wm),
When the winding package becomes 200mm in diameter,
Ribbon winding as shown in Section 5.6 occurs. In this case, while the yarn traverses from the point to the point, there is only one point of intersection, the point C, between the yarn traveling to the left and the yarn traveling to the right. When such a package is released, the yarn from one intersection to the next intersection is in a so-called free state, so sluffing is likely to occur if the package is released at high speed.

Next, embodiments of the apparatus of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of the main parts of the winder, showing a traversing drum D that directly traverses the yarn. The traverse grooves are formed as grooves with different numbers of winds. That is, when the traversing drum D rotates in the direction of the arrow, when the yarn traverses from the left to the right, the groove a of the 3 winds or the groove a of the 2 winds of the branching part 1 to 3 existing near the folded end at the left end. Grooves a and f having different wind numbers are formed so as to be traversed by one of the grooves f.

Similarly, when the thread traverses from the right to the left, the branch point 3
Grooves g1h having different numbers of winds are formed so as to be traversed by either the 3-wind groove g or the 2-wind groove g. 6 is a yarn splicing device provided in the winder.

In addition, in this example, in order to make the explanation easier to understand,
Although the cases where the number of winds of the traversing groove is 2 and 3 are shown, other combinations of different numbers of winds are also possible. For example, 3 winds and 4 winds, 1.5 winds and 2.5 winds, etc. are possible.

FIG. 2 is a developed view of the traverse drum shown in FIG. As described above, branch portions 1.2 are formed near the left and right folded ends. The grooves for traversing from left to right are groove abcde for 3 winds and a for 2 winds.
f d e, and the groove for traversing from right to left is 3
Groove gijk1m for wind and ihkl for 2 wind
It is m.

Each of these shares a part.

Therefore, at the branching point 1 of the grooves a and f, the number of winds of the yarn wound into the winding package changes depending on whether the guided yarn enters the groove a or ff1f. That is, the number of winds is 3 if the thread path is indicated by the solid line in FIG. 1, and 2 winds if the thread path is indicated by the broken line in FIG. Groove g
, h at branch point 2.

Next, an example of a thread path switching means will be described with reference to FIGS. 1 and 3.

A switching guide 3 for regulating the yarn path is provided in the traverse area near the branching point l of the grooves a and f and the branching point 2 of the grooves g and h, respectively.
4 is a provision. The switching guide 3.4 is located intermediate the traversing drum and the guide member 7 at the center of the yarn traverse. Its structure is as shown in FIG. According to this, a water wheel 9 is attached to a shaft 8 provided near the traverse guide 5.
A water wheel 10 for preventing reversal is fixedly installed, and a hook 13 is formed at the claw end of the water wheel 9. A reverse stop lever 11 biased by a push spring 12 is engaged with the claw of the reverse rotation prevention water wheel 10 to prevent the water wheel 9 from reversing.

FIG. 3 is a diagram of the switching guide on the right side of the traverse guide 5. Let us now assume that when the water wheel 9 is in the state shown in FIG. 3, the thread traverses from the left to the right as shown by the arrow. The thread pushes the claw without a hook, rotates the waterwheel 9 by one claw, and further advances to the right end wall of the traverse guide 5. In this state, the traversing drum D rotates and the yarn is guided into the groove g.

Next, when the yarn traverses from the left to the right, a claw with a hook 13 protrudes into the yarn path of the traverse guide 5, so the yarn is caught on the hook 13 and does not move further to the right. The thread is thus guided into the groove. This relationship holds true for the left switching guide as well.

The number of threads and the number of hooks in the switching guides 3.4 do not need to be the same on the left and right sides, and by varying them, the yarn can be wound on the package in a variety of ways. for example,
In the left switching guide 3, the thread is placed in the groove faafaa at the branching part.
Guide by repeating k, and in the right switching guide 4, groove h
The number of water and the number of hooks can be set to guide by repeating ghg. Of course, more complex or simple repeating patterns are also possible.

Note that the switching guide may be of any type as long as it can selectively prevent the movement of the yarn, and the one shown in FIG. 4 can also sufficiently achieve the purpose. This is the tip hook 1
A switching lever 15 having a hook 6 and a central hook 17 is attached to the pongee 14 with enough resistance to allow it to be moved by traversing the thread. Switching lever 1
5 is in the state shown by the solid line in the figure, and if the thread traverses from left to right in the direction of the arrow (example in the switching guide on the right side of the traversing drum), the thread will move along the side of the switching lever 15 until it reaches the tip hook. 16, and at the same time rotate the switching lever 15 to the position indicated by the broken line. In this state, the traversing drum D rotates and the yarn is guided into the groove g. Next, when the yarn traverses from the left to the right, it travels along a different side of the switching lever 15 to the central hook 17 and is guided into the groove.

In the ribbon winding generation diameter, the more intersections of threads on the winding package, the fewer threads will pass through the same path.
Therefore, the ribbon is dispersed, tension fluctuations are reduced when the package is released, and sluffing and thread tangles are less likely to occur.

Effects of the Invention Since this invention is configured as explained above,
This produces the effects described below.

In other words, the switching guide is actuated by the traversal of the yarn, and the yarn is actively distributed to the yarn paths corresponding to threads with different numbers of winds at the branching point. In such a package, the threads passing through the same path tend to be dispersed regardless of the ribbon winding diameter.

Therefore, the number of thread intersections can be considerably increased, and sluffing and tension fluctuations during high-speed release of the package can be reduced. In other words, it is possible to produce a package that can be smoothly released.

Furthermore, since no special power is required to switch the yarn path, the device is compact and contributes to energy savings.

When two traversing switching points are provided, the frequency of repetition of the same thread path can be lowered compared to one where the traversing switching points are provided, and an imbalance in the thread distribution density can also be prevented.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an example of the device of the present invention, Fig. 2 is a developed view of the traversing drum, Fig. 3 (a) is a plan view of the switching guide, (b) is a front view thereof, and Fig. 4 112 - Branch point, 3.4 - Switching guide , 9 pawl wheel, 15 switching lever, D winding repackage, a, b, c. twill groove

Claims (1)

[Claims] 1. A drum having grooves for directly or indirectly traversing the yarn is formed with grooves having different numbers of winds and a branching part for distributing the yarn to yarn paths corresponding to the grooves having different numbers of winds,
A yarn winding device equipped with a switching guide that operates by traversing the yarn and actively distributes the yarn at branching points.