JPH03182465A - Winding device for yarn - Google Patents

Abstract

PURPOSE:To wind a package which can withstand the high-speed release with no ribboning by forming grooves with the different number of windings on a drum and a branch section to yarn paths corresponding to the grooves, and providing a yarn switching guide and a mobile guide rotated to the position shielding the yarn path to the switching guide. CONSTITUTION:A switching guide 2 is provided in the gap of a traverse guide 5, and yarn receiving sections 9, 10 are formed to face the entering direction of traversed yarns. The yarn receiving section 9 is protruded forward in the yarn entering direction then the yarn receiving section 10 so that the yarn receiving sections 9, 10 guide the entering yarns to the grooves (a), (n) of a traverse drum D. The switching guide 2 is fitted at the position where the yarn can be received by the yarn receiving section 9 when a mobile guide 3 is located at the waiting position. The mobile guide 3 is rotated to the position shielding the switching guide 2 by exciting a rotary solenoid. The yarn is traversed over the whole width of the traverse guide 5 along the mobile guide 3 protruded to the traverse guide 5 and guided to the groove (n).

Description

Detailed Description of the Invention A1 Object of the Invention [Field of Industrial Application] The present invention relates to a yarn winding device for a spinning machine, an automatic wine goo, 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 wine goo, 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 feeding 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 automatic wine processing, 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-described 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
Although this was not a major problem when releasing at 0 m/win, troubles such as sluffing occur in recent high-speed releasing from 600 to 1000 m/a+tn. Also,
In those that supply weft yarn by air jet, the yarn release speed is as high as 800 to 1500 m/win, and the above-mentioned troubles occur frequently, which is a big problem.

The present invention aims to provide a thread 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. The branching part that distributes the
It is provided with a switching guide that distributes the threads at the branching portion and a movable guide that rotates to a position that blocks the thread path to the switching guide.

[For production]

In the yarn winding device configured as described above, the yarn is distributed at the branching portion by the switching guide, and the rotating movable guide blocks the yarn path to the switching guide. At the branching point, the yarn is sorted into yarn paths corresponding to grooves with different numbers of winds.

〔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 (am), the number of winds of the winding package is Pvt, the diameter of the traverse drum is Dr (a), and the number of winds of the traverse drum is Dw, then the ribbon of the winding pub cage is The winding diameter is determined by the following formula.

Dw R= Dr
is R1=100X2/1=200(wm),
When the diameter of the wound package is 200M, ribbon winding as shown in No. 4.5 occurs. In this case, during one traverse of the yarn starting from point A, there is only one intersection between the left-traversing yarn and the right-traversing yarn, which is point 0.

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 wine goo, 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 traverse drum D rotates in the direction of the arrow, when the yarn traverses from the right to the left, the yarn traverses from the branch part 1 through either the 2-wind groove a or the 3-wind groove n. , grooves a and n having different wind numbers are formed. 6 is a yarn splicing device provided in the wine goo.

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, a branch portion I is formed near the right folded end. The groove for traversing from right to left is the groove abcdef for 2 winds and the groove nopq for 3 winds.
It is rcdef.

Each of these shares a part. Note that the traverse groove from left to right is a groove ghijk1m, and is a 3-wind groove.

Therefore, at the branching point l between the grooves a and n, the number of winds of the yarn wound into the winding package changes depending on whether the guided yarn enters the groove a or the groove n. 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.

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

A switching guide 2 for regulating the yarn path, which can be fixed in position, and a movable guide 3 fixed to the shaft 8 of the rotary solenoid are provided in the traverse area near the branch l of the grooves a and n. These are located between the traversing drum D and the guide member 7 at the center of the yarn traverse.

This switching guide 2 is provided in the gap between the traverse guides 5, and forms yarn tube portions 9 and IO opposite to the direction in which the traversing yarn enters. In order to guide the incoming yarns to the grooves a and n of the traversing drum D, the yarn tube sections 9 and 10 are arranged so that the former is guided from the latter, that is, the yarn tube section 9 is guided by the yarn tube section 10.
It is made to protrude forward in the direction of yarn entry. In addition, the yarn tube portions 9 and IO are provided with recesses or slopes as shown in the figure in order to reliably receive the traversing yarn. This switching guide 2 is attached to a position such that the yarn can be received in the yarn tube section 9 when the movable guide 3 is in the standby position (the position indicated by the solid line in FIG. 3).

By the way, the thread does not simply traverse along the same route, but constantly and subtly fluctuates due to inertial force and fluctuations in thread tension during the traverse motion, but this is due to a normal distribution centered on a certain route. fluctuating in the near future. Therefore, in order to make the acceptance probability of the yarn into the yarn tube section 9 and the yarn tube section 10 almost equal, the boundary between the yarn tube section 9 and the yarn tube section 10 is placed at the most frequent position of the traverse path. Adjust and secure the position.

The movable guide 3 is configured to pivot to a position (position indicated by the dotted line in FIG. 3) where it shields the switching guide 2 by energizing the rotary solenoid.

By doing so, the traverse of the thread can be completely unaffected by the switching guide 2. That is, the thread traverses along the movable guide 3 protruding into the traverse guide 5 over the entire width of the traverse guide 5, and is guided to the groove n. Further, it is also possible to set the turning position of the movable guide 3 so that the yarn is received in the yarn tube portion IO when the current is applied, and in this case also, the yarn is guided to the groove n when the current is applied.

The power supply to the rotary solenoid is controlled by detecting the traverse of the yarn by a photoelectric sensor 4 provided on the front surface of the traverse guide 5. The yarn that wraps around the end of the traversing drum crosses the photoelectric sensor twice within a short period of time, but in order to use one of the two times as data for determining whether the yarn has passed, a self-holding relay is installed in the circuit of the charging sensor 4. After the charging sensor 4 detects the passing of the yarn, the traversing drum makes one revolution (0.02 seconds) and generates a traverse sensing signal.

The relationship between the traverse sensing signal and the energization of the rotary solenoid can be programmed in various ways. For example, a rotary solenoid can be turned off and on for each traverse sense signal. Of course, more complex repeating patterns are also possible. Note that the switching guide is not limited to this embodiment as long as it can selectively prevent the movement of the yarn.

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.

C1 Effect of the invention Since this invention is configured as explained above,
This produces the effects described below.

In other words, the way the yarn is distributed at the branching point by the switching guide is caused by a complex interplay between the movement of the switching guide and the movement of the movable guide, which rotates based on the signal from the traverse detection sensor, blocking the thread path to the switching guide. Since it is not determined unambiguously, the wound package has a tendency for threads passing through the same path to be dispersed regardless of the ribbon winding diameter, and therefore, it is possible to increase the number of intersections of the threads. Sluffing and tension fluctuations when releasing packages at high speed can be reduced. In other words, it is possible to produce a package that can be smoothly released.

[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 a traversing drum, Fig. 3 is a plan view of a switching guide and a movable guide, and Figs. 4 and 5 are views of a conventional device. FIG. 3 is a front view of the package showing the state of ribbon winding at the resulting ribbon winding diameter.

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 that includes a switching guide that distributes yarn at a branching portion and a movable guide that rotates to a position that blocks the yarn path to the switching guide.