JPS605507B2 - Yarn winding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a yarn winding device, and more particularly to a belt traverse type yarn winding device that can make the winding shape of the end of the yarn into a desired shape after winding. Regarding.

Conventionally, a cam traverse system and a belt traverse system have been proposed as yarn winding devices.

In the former, since the guide with inertia reciprocates, rapid acceleration changes cannot be made before and after the turning point, and therefore there is a limit to the quick return speed, and the yarn accumulates at the turning point, which leads to high selvage. Ta. On the other hand, in the latter belt traverse method, the traverse is performed using two movable guide members that move in parallel in opposite directions at a constant speed, except in the very vicinity of the traverse turning point, so it is faster than the cam traverse method. It is desirable. This belt traverse method includes one in which the yarn is directly transferred between two moving guide members, and one in which the yarn is transferred from one moving guide member to another moving guide member via a transfer auxiliary member. In the former case, 2
It is necessary to completely match the traverse return position and the delivery position between the two moving guide members, in the latter case between the moving guide section and the delivery auxiliary member. However, due to fluctuations in the tension of the yarn, vibrations of the moving guide member, etc., the yarn becomes unstable at the traverse end and accumulates, causing the transfer position to fluctuate, making it impossible to perfectly align the transfer position with the traverse return position. It was difficult. In addition, when winding the yarn onto a bobbin while traversing the yarn using a traverse device, the length of the yarn existing between the moving guide member of the traverse device and the winding bobbin (so-called trail length) is set to zero. Therefore, the yarn wound on the bobbin always moves slightly behind the movement guide member, and there is a certain delay distance between the two.For this reason, the package wound on the bobbin at the end of the traverse If the moving guide member is not rapidly overtraversed by the amount of yarn delayed beyond the end of the yarn, and then rapidly returned from the overtraverse position to a position inside by the amount of yarn delayed, the moving guide member The distance to the yarn becomes smaller than the delay distance, and the yarn accumulates at the end of the package. Due to the above reasons, the package folds have a high selvage and collapse, making it difficult to achieve high-speed winding. An object of the present invention is to provide a belt traverse type yarn winding device that can make the winding shape of the end portion of the yarn after winding into a desired shape. Such objects of the present invention are achieved by the following apparatus of the present invention.

That is, the device of the present invention includes a take-up bobbin, a first traverse means disposed upstream of the take-up bobbin for traversing the yarn in the axial center of the take-up bobbin, and installed near both ends of the first traverse means. The second traverse means has a concave bottom formed at the intersection of two circumferential curves, and is located at the outermost side of the traverse and rotates in one direction. and a second rotating member that has a protrusion formed on a circumferential surface, is located inside the traverse with respect to the first rotating member, and rotates in a direction opposite to the direction of the first rotating member. It is. One embodiment of the present invention will be described below with reference to the drawings.

In Figure 1, 1, 2, 3, and 4 are two pairs of pulleys that are eccentrically adjacent to each other. has been done.

The belts 5, 6 are arranged close to each other and parallel to each other, as indicated by the arrows A,
They are rotated by pulleys 1, 2, 3, and 4 so as to run in opposite directions, respectively, as indicated by B. Traverse guides 7, 8 having the shapes shown in FIGS. 2 to 7 are fixed at predetermined positions on the surfaces of the belts 5, 6. Among the two pairs of pulleys, pulleys 1 and 4 arranged on the inside have pulleys 2 and 3.
Protruding cams 9 and 10 are fixed to the pulleys 2 and 3, which are disposed on the outside of the two pairs of pulleys, and heart-shaped cams 11 and 12 are fixed to the protruding cams 9 and 10'. It is fixed. As shown in FIG. 2, this protruding cam 9,1 has a curved surface 9a' that is curved and inclined backward with respect to its rotation direction, and a curved surface 9a' that is continuous with the curved surface 9a' and curved forward with respect to its rotation direction. It is composed of a protrusion 9a formed from an inclined curved surface 9a'', and a base 9b that is continuous with the protrusion 9a and has approximately the same diameter as the pulley.
The heart-shaped cams 11 and 12 have a curved surface 11a that curves and slopes backward with respect to the rotation direction, a curved surface 11b that curves and slopes forward with respect to the rotation direction, and the curved surface 11.
It consists of a concave bottom 11c formed at the intersection of points a and 11b, and a base curved surface 11d, one end of which is continuous with the curved surface 11a and the other end of which is continuous with the curved surface 11b. Note that this concave bottom portion 11c is located outside the outer periphery of the pulleys 2 and 3. Although the drive sources for the pulleys 1, 2, 3, and 4 are not shown, all of these rotate Okato and the belts 5,
6 is driven to run in the directions of arrows A and B. next,
The operation of the device of the present invention will be explained.

In FIGS. 1 and 2, a belt 5 runs in the direction shown by arrow A by pulleys 1 and 3 that are rotated by a drive source (not shown), and is fixed at a predetermined position on the surface of the belt 5. The traverse guide 7 approaches the pulley while capturing the yarn 13. At this time, the belt 6 runs in the direction shown by the arrow B by the pulleys 2 and 4 rotated by a drive source (not shown),
The traverse guide 8 fixed at a predetermined position on the surface of the belt 6 travels in the direction shown by arrow D and approaches the traverse guide 7. At this time, pulley 1
The protruding part ga of the protruding cam 9 and the concave protruding part 11c of the heart-shaped cam 11 fixed to the thread 13 are far apart from each other.
has not yet come into contact with the protruding cam 9, but is captured by the traverse guide 7 and swung in the direction of arrow C. Next, in FIG. 3, when the traverse guide 7 further travels in the direction of arrow C, the protruding cam 9 further rotates in the direction of arrow E, and the heart-shaped cam 11 further rotates in the direction of arrow F, the yarn 13
is captured between the curved surface 9 of the protruding cam 9 and the curved surface 11b of the heart-shaped cam 11. Next, when the protruding cam 9 and the heart-shaped cam 11 further rotate in the directions of arrows E and F, the thread 13 follows the rotation of the protruding cam 9 and curves the curved surface 9 as shown in FIG. It is swung along. Here, since the protruding cam 9 is located inside the traverse by a predetermined amount a with respect to the heart-shaped cam 11, the direction in which the curved surface 9a' traverses the yarn 13 is the running direction A of the belt 5. The traverse guide 7 captures the yarn 13 while the pulley 1
This is approximately the same direction as the direction of approach. Therefore, the yarn 13 does not radiate outward from the protruding cam 9 from the curved surface 9a' and is reliably traversed. Also, this yarn 1
The traverse speed and tension of No. 3 are based on the curved surface 9a of the protruding cam 9.
' and the shape of the curved surface 11b of the heart-shaped cam 11. In other words, the thread 13 is quickly fed outward by the protrusion 9a. Therefore, it is possible to prevent the yarn 13 from accumulating at the end of the package, and as a result, there is no rise in height at the folded portion of the package. Moreover, the curved portion 11b provides appropriate resistance to the yarn 13 that is being rapidly fed outward by the protruding portion 9a.
Therefore, there is no so-called pre-running of the yarn 13 in which the yarn 13 is separated outwardly from the protruding portion 9a, and as a result, there is no occurrence of ear dents in the folded portion of the package. At this time, the yarn 13 is also captured by the traverse guide 7, and a protruding cam 9 and a heart-shaped cam 1 are located between the traverse guide 7 and the take-up bobbin (not shown).
1, the traverse speed and tension of the yarn 13 are not affected by the running speed of the traverse guide 7. Next, in FIG. 5, when the tops 9a of the protrusions 9a of the protruding cams 9 and the concave bottoms 11c of the heart-shaped cams 11 are lined up substantially on the same straight line, the threads are The traverse width of the row 13 is determined. As a result, the package folding portion is prevented from collapsing (twilling). After this time, the yarn 13 is attached to the curved surface 11 of the pigeon-shaped cam 11.
a, the thread 13 is swung in the opposite direction along the curved surface 9a'' of the protruding cam 9. 9
a'', and the traverse speed and tension of the yarn 13 at the traverse end are controlled to a desired state. That is, the yarn 13 is rapidly fed inward by the curved surface 11a. Therefore, the yarn 13 is As a result, the curved surface 9a'' prevents the yarn from accumulating in the folded portion of the package, and as a result, the curved surface 9a'' has a high resistance to the yarn 13 that is quickly fed inward by the curved surface 11a. This results in moderate resistance. therefore,
The so-called yarn 1 in which the yarn 13 is spaced inward from the curved surface 11a
As a result, no ear dents occur in the folded portion of the package. At this time, the traverse guide 7 travels in the direction of arrow C while releasing the grip on the yarn 13, and the traverse guide 8 travels in the direction of arrow D and approaches the yarn 13. Next, in FIG. 6,
The traverse guide 7 moves further away from the yarn 13 and the traverse guide 8 captures the yarn 13. Next, in FIG. 7, the yarn 13 is connected to the protruding cam 9 and the heart-shaped cam 1
1 and is captured only by the traverse guide 8, and the transfer of the yarn 13 is completed. The above describes the transfer of the yarn 13 on the pulleys 1 and 2 sides of the belts 5 and 6, but the transfer of the yarn 13 is similarly performed on the pulleys 3 and 4 side. In the above embodiment, the protruding cam 9 and the heart-shaped cam 11, and the protruding cam 10 and the heart-shaped cam 12 are eccentric by a predetermined amount a, so that the pulley 1 and the pulley 2 and the pulley 2 are eccentric. -1 It is no longer necessary to drive the pulley 4 and the pulley 3 on the same axis.

Therefore, the effect that the structure of the drive source that drives each pulley 1, 2, 3, and 4 is simplified can be obtained. Further, in the above embodiments, a belt traverse type winding device has been described, but the present invention is also applicable to a cam traverse type winding device as shown in FIG. That is, protruding cams 9', 10' and heart-shaped cams 11' having the same shape as described above.
, 12' are provided below both ends of the cam traverse device, parallel to and adjacent to the strong center. Further, it can be similarly applied to a multi-vede type winding device.

Further, in the above-mentioned embodiment, the curved surface 11a of the heart-shaped cam 11 was described as being a smooth curved surface, but the present invention, as shown in FIG. A stepped portion 11e may be provided on the curved surface 11a. Also, "the heart-shaped cam 1 that the yarn 13 contacts"
The curved surfaces 11a, 11b of 1 and the curved surfaces 9a', 9a'' of the protruding cam 9 may be given a suitable finish, such as hard chrome plating or satin finish. , plate cams were used as the protruding cams 9 and 10 and as the heart-shaped cams 11 and 12, but one in which the wire was formed into a curve from 9a' to 9a'',
Pulley 1 is formed into a curve from 1a to 11b.
It may be fixed to the circumferential weave portions 2, 3, and 4, respectively, or it may be anything that has the above-mentioned curves. Furthermore, in the above embodiment, the two belts 5 and 6 running in opposite directions were wrapped around the boleys 2, 3, and 4, but by adding a plurality of direction change pulleys, the belt It may be bent to form a single belt. Further, one or two of the pulleys 1, 2, 3, and 4 may be used as a drive pulley, or a separate drive pulley may be provided and driven by this. Furthermore, in the embodiment described above, both belts 5, . Protruding cams 9, 10 between 6
Although heart-shaped cams 11 and 12 were arranged, both cams 9 and 1
0, 11, and 12 may be arranged above the belt 5 or below the belt 6. As described above, according to the apparatus of the present invention, the yarn is not folded back by the first traverse means, the yarn is delivered to the second traverse means independent from the first traverse means, and the yarn is rotated in an appropriate shape. Since the yarn is captured and folded back by the second traverse means having the member and the second rotating member, the traverse speed and tension of the yarn in the traverse machine can be controlled to a desired state.

In addition, since the first rotating section and the second rotating section rotate in a fixed direction, the yarn can be folded back extremely smoothly. In addition, it is possible to completely prevent the yarn from filling up at the end of the package or running ahead of the yarn.As a result, it is possible to completely prevent the yarn from filling up at the end of the package or running ahead of the yarn. This eliminates the occurrence of dents and enables high-speed winding of the yarn at a running speed of 25 h'min or more.

[Brief explanation of drawings]

The attached drawings show an embodiment of the yarn winding device according to the present invention, and FIG. 1 is a schematic plan view of one embodiment of the yarn winding device, and FIGS. 2 to 7 are traverse end views. FIG. 8 is a schematic perspective view of another embodiment of the yarn winding device, and FIG. 9 is an illustration of another example of the heart-shaped cam used in one embodiment of the present invention. FIG. 2 is a perspective view showing an example. 1, 2, 3, 4, 5, 6, 7, and 8 are first traverse means, 9 and 10 are second rotating parts, 11 and 12 are first rotating members, and 13 is a thread. Figure lFigure 2Figure 3Figure 4Figure 5Figure 6Figure 7Figure 8Figure 0

Claims (1)

[Scope of Claims] 1. A take-up bobbin, a first traverse means disposed upstream of the take-up bobbin and traversing the yarn in the axial center of the take-up bobbin, and installed near both ends of the first traverse means. The second traverse means has a concave bottom formed at the intersection of two circumferential curves, and is located at the outermost side of the traverse and rotates in one direction. and a second rotating member having a protrusion formed on a circumferential surface, located inside a traverse with respect to the first rotating member, and rotating in a direction opposite to the direction of the first rotating member. A yarn winding device characterized by: 2. The thread according to claim 1, wherein the first rotating member and the second rotating member of the second traverse means rotate in a plane substantially perpendicular to the traverse plane formed by the first traverse means. Strip winding device. 3. The method according to claim 1, wherein the first traverse means comprises an endless belt having a pair of traverse portions arranged close to each other in parallel and running in opposite directions, and a plurality of thread guides are attached to the endless belt. Yarn winding device. 4. The yarn winding device according to claim 3, wherein the second traverse means is installed between a pair of traverse portions. 5. The yarn winding device according to claim 3, wherein the second traverse means is installed above the pair of traverse portions. 6. The yarn winding device according to claim 3, wherein the second traverse means is installed below the pair of traverse portions. 7. The yarn winding device according to claim 3, wherein the second rotating member is located inside the first rotating member, and the second rotating member and the first rotating member are arranged eccentrically with respect to each other. . 8. The first traverse means has a plurality of yarn guides for traversing the yarn, and an endless belt having a pair of traverse portions that are arranged close to each other in parallel and run in opposite directions, and adjacent to each other with eccentric axes thereof. The second traverse means includes a second rotating member attached to the inner pulley of the two pairs of pulleys, and a second rotating member attached to the inner pulley of the two pairs of pulleys. 2. The yarn winding device according to claim 1, further comprising a first rotating member attached to a pulley located on the outside of the pulley so as to face the second rotating member.