JPH01313264A - Yarn winding method and device thereof - Google Patents

Abstract

PURPOSE:To increase an intersection of yarn as well as to keep off any trouble such as sloughing or the like at the time of high-speed opening by changing the wind number of a package in one traverse of the yarn. CONSTITUTION:Yarn is wound up with a drum provided with a traverse groove of two left-handed winds and three right-handed winds. At this time, the yarn is wound up as traversing along an arrow, and at the time of left going (an arrow 6 direction), a package number is one wind, but at the time of right going (an arrow 7 direction), it comes to 1.5 wind. In brief, supposing that a traverse is started from a point A, the yarn is wound up along 1' 14 loci, and points C2, C3, C5, C6 where full lines themselves are crossed and point C1, C4, C7, C8 where broken lines themselves are crossed at this time come to an intersection with the actual yarn, and the intersection is produced in order of C1, C2, C3...C8. Thus, the intersection is increased in quantity, so that a package outer surface is hard to be disarranged and, what is more, sloughing and yarn tangling are hard to occur as well at the time of high-speed opening.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a yarn winding method and apparatus.

[Conventional technology]

For example, an automatic wine gourd as shown in FIG. 9 is known that winds a spinning bobbin after spinning to form a corn package or a cheese package.

In such an automatic wine gourd (1), the package (
The yarn feeding bobbin (3) is wound while driving the yarn feeding bobbin (4) in surface contact and traversing. When winding is performed using the traverse drum (2), when the drum diameter (R) and the package diameter (D) have a certain special relationship, in other words, the rotational speed 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 unresolved in the subsequent process, and various conventional ribbon winding prevention devices have been proposed and are in 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 a conventional ribbon winding prevention device 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 during high-speed unraveling, and high-speed looms, such as those that supply the weft yarn by air jet, have a yarn unraveling speed of 800~
The speed is as high as 1,500 m/min, and the above-mentioned troubles occur frequently and become a major problem.

The present invention aims to solve the above problems.

[Means to solve the problem]

The present invention is a method of winding a package while traversing the yarn, in which the number of winds of the package is changed within one traverse of the yarn.

〔Example〕

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

Note that the ribbon winding diameter (Rmm) is generally determined by the following formula.

-W For example, if D = 100 mm and D-W = 2 winds, the ribbon generation diameter of 1 wind package (R1)
Rl = 100X2/1 = 200 (mm), and when the diameter of the package reaches the 200 mark, ribbon winding (Ll) as shown in the second diagram occurs.

That is, in this case, during one traverse of the thread starting from point (A), the point where the left thread (Yi) and the right thread (Y2) intersect (hereinafter referred to as the intersection point (C)) is 1. Only point (C). Therefore, when such a package is unraveled, the yarn from the intersection point (C1) to the next intersection point (C1) is in a free state, so that sluffing is likely to occur if the package is unraveled at high speed.

Next, the winding method of the present invention will be explained with reference to FIG. That is, if the starting point of the yarn traverse is (A), then the number of puff cage winds (P-Wa) during the traverse in the direction of arrow (6) from point (A) to the other end and the number of puff cage winds in the opposite direction (7). The number of puff cage winds (P·wb) during traverse is made different. That is, one reciprocation of the thread (one traverse)
The number of package winds is changed between the winding steps.

For example, instead of the drum with D-W = 2, a drum (10) (drum diameter D = 10-0) having 2 winds leftward and 3 winds rightward traverse grooves as shown in Figure 7 may be used. Use it to wind the thread.

In this case, the yarn is wound while traversing along the arrow in Figure 1, and the number of package winds is 1 when it is on the left (in the direction of arrow (6)) and 1 wind when it is on the right (in the direction of arrow (7)). is 1.5 wind. In addition, the solid line part of the yarn path shown in the figure shows the yarn in the front half circumference of the package, and the broken line part shows the yarn in the back half circumference of the package. That is, in Fig. 1, if the traverse starts from point (A), the yarn is wound along the trajectory of ) (C6)
The points where the dashed lines intersect (C1) (C4) (C7
) (C8) is the intersection with the actual thread, and the intersection is (C
Occurs in the order of I>(C2> (C3) --(C8),
For example, at the intersection point (CI), the threads that create the intersection point are the threads indicated by the symbols ``■'' and ``■'', which intersect so that the yarn ``■'' with the larger number is located above the thread ``■''. The same applies to other intersection points.

In this way, compared to the conventional case shown in FIG. 2, there are more intersections, the surface layer of the package is less likely to be disturbed, and nulling γ-fing and thread tangles are less likely to occur during unraveling. Also, the second
In the case shown in the figure, point (A) is passed every 1 traversal, but in the case of the package shown in Fig. 1, the thread alternately passes point (A) and point (B) shifted by 180 degrees, so the thread overlaps, i.e., the ribbon. is dispersed and reduced by half, which further reduces the chance of sluffing or thread tangles occurring during unraveling.

When unraveling the thread from the package shown in Figure 1, if you unravel it in the direction of the right arrow (11), the thread will be unraveled from the left end (4a) to the right end (4b) of the package. Since the number of winds is 1 wind, and 1.5 winds in the direction from the right end to the left end, the time in the direction where sluffing is likely to occur, that is, from the left end to the right end, is short, so the probability of sluffing occurring is further increased. It becomes smaller. This effect is even more pronounced when the yarn is wound around a cone package.

In addition, when the traversing drum for forming the above-mentioned package is used, that is, the number of drum winds is a mixture of D-W=2 and D-W=3, the ribbon The winding generation is further R2= 100 X3/1 23
It occurs even at a diameter of 00m5. That is, FIG. 3 shows the yarn winding state at a position where the puff cage diameter is 300 mm (R2=3D). In this case, if point (AO) is the starting point of the traverse, the number of drum winds (D - W) in the right direction is D - W = 3, so the number of package winds (P W) is P - W = 1, but in the case of going left, D-W = 2, so P-W = 2/3,
The thread that has traversed several times returns to point (^1), and after one more traversal it returns to point (^2), so that ribbon winding hardly occurs. Even if it occurs, it is a ribbon winding with a large period, and the intersection (Ql) (mouth 2)
-(Qn) becomes extremely large. In addition, Fig. 4 shows a drum in which the number of winds is D-W = 3 (D = 100
mm> shows the state of package 1 wind when the package diameter is 300 mm (R=3D), and shows the case where there is one intersection (Q).

Table 1 shows the results of measuring the number of times of sluffing or yarn breakage when packages wound up using the conventional drum and the drum of the above embodiment according to the present invention were unwound at high speed. Note that each number of times is the number of thread breakages per 1 package.

Next, as another example, change the number of winds of the drum to the left by D-W.
The state of the yarn wound around the package at the ribbon winding diameter when D-W = 3 and rightward D-W = 4 is shown.

That is, in this case, the drum diameter (D) is set to 1 as in the above example.
00 mm, the ribbon winding diameter of the puff cage l-wind is as follows from formula (A): R3=100X-=300 R4=100X-=400, and the ribbon winding occurs at the puff cage diameter of R3=3DSR4=4D.

Figure 5 shows the winding state when R3=3D, 3 winds in the left row,
Since the winding is performed using a drum with 4 winds in the right row, the point (A
If we start the traverse from O), we will traverse as shown by the arrow, and in one traverse we will reach the point (AI), that is, we will reach the half-circumference end surface on the far side opposite to the point (AO), and after one more traverse, we will reach the point (AI). When we reach the point (^2),゛・
- As mentioned above, the overlap of the threads is dispersed and intersection points occur at eight locations (■1) to (18) between the two traverses.

Furthermore, as the package diameter increases and the ribbon winding diameter becomes 1 when the package is wound with a drum that is 4 times the drum diameter, that is, 4 winds, the number of winds in the package becomes 1. If it starts, it will reach point (A2) after two traverses, and in this case, as in Figure 5, the overlapping of yarns will be dispersed despite the ribbon winding diameter, and there will be five intersections (Jl) to (J5). Occur.

In this way, by changing the number of winds of the package during one traverse, the overlapping of yarns at the ribbon winding diameter is dispersed, and the number of intersections of yarns on the package surface is increased, making it easier to swipe during unwinding. It is possible to produce packages that are resistant to ruffing and thread tangles and can withstand high-speed unraveling.

An example of a traversing drum that enables winding as described above is shown in FIG. In other words, when the drum (10) shown in Figure 7 rotates in the direction of the arrow (12) and transfers the time series from right to left, the right wall surfaces of the grooves (13), (14), and (15) act, and the two-wind drum rotates in the direction of the arrow (12). When the yarn is transferred from left to right, the left wall of the grooves (16), (17), (18), and (19) act, forming a three-wind drum. Therefore, when winding is performed using such a drum (lO),
It is possible to create a wound state of the package as shown in FIGS. 1 and 3 described above.

Note that the winding according to the present invention has a traversing drum in each finding unit as shown in FIG. A shaft (20) extending between the winding units is provided, and a traverse guide (
21) is fixed, and the cams 21 are interposed in cam grooves (23) with different numbers of winds formed in the traverse drum (22) at the end of the shaft in the same manner as the drum described above, to simultaneously thread multiple units of yarn. It is also applicable to a type of winder that traverses. (24) is the friction roller, (25) is the package, (26)
is the drive motor.

In the above embodiments, drums having different wind numbers are shown, such as a drum in which D-W=2 and D-W=3 are mixed, and a drum in which DW.3 and DW.4 are mixed. For example, a combination of DW=1.5 and DW=2.
5, DW = 2.5 and DW = 3.5, DW = l
Various combinations such as and DW=2, DW=2 and DW=4 are possible, but there are problems in manufacturing the drum, thread crossing, etc.
That is, depending on various conditions such as yarn transfer at the intersection of grooves formed on the drum, the number of yarn intersections in the ribbon winding diameter, the state of yarn dispersion, etc., an appropriate combination of the number of drum winds can be selected. is set.

〔Effect of the invention〕

As described above, according to the present invention, there are many thread intersections in the ribbon winding diameter, and the ribbon tends to be dispersed, making it possible to prevent troubles such as sluffing during high-speed unraveling.

[Brief explanation of the drawing]

FIG. 1 is a front view of a package showing a state in which the yarn is wound with a ribbon winding diameter according to the method of the present invention, and FIG. 2 is a front view of the package showing a state when it is wound with a conventional drum. Figure 3 shows the ribbon winding state when the package in Figure 1 has a diameter three times the drum diameter, and Figure 4 shows the ribbon winding state when it is wound on a conventional 3-wind drum. Figure 5 is a diagram showing the winding state when the package diameter is three times the drum diameter when winding is performed using a drum with grooves of DW = 3 and DW = 4, and Figure 6 is a diagram showing the winding state when the package diameter is three times the drum diameter. FIG. 7 is a plan view showing an embodiment of the traversing drum for winding as shown in FIG.
FIG. 8 is a schematic configuration diagram showing another winding device to which the present invention is applied, and FIG. 9 is a perspective view showing an example of an automatic wine goo having a traversing drum. (4) Package (10) (22) Traverse drum

Claims (1)

[Scope of Claims] 1. A method for winding yarn while traversing the yarn around the package, the method comprising changing the number of winds of the package within one traverse of the yarn. 2. A yarn winding device characterized in that a drum having grooves for directly or indirectly traversing the yarn is provided with grooves having different numbers of winds in rightward and leftward directions.