JPS60248572A - Winding tension correcting device of fine spinning machine - Google Patents

Abstract

PURPOSE:To adjust the winding tension to be substantially constant in a simple structure by disposing a rotatable guide bar and a guide plate between a draw- off roller and a traverse device, and providing a tension adjust member between the guide bar and the guide plate. CONSTITUTION:A guide bar 22 and a guide plate 21 are disposed between a draw-off roller 2 and a traverse device 5. A tension adjust member 31 oscillating substantially horizontally in fixed stroke, interlocking with the traverse motion of the traverse device 5 is disposed between the guide bar 22 and the guide plate 21. The guide bar 22 is rotatably supported on a support shaft 23 coupled to a bobbin holder 26 through a link 28. In this arrangement, though the width of oscillation of the tension adjust member 31 is constant, the reserve length can be obtained corresponding to the roll diameter of a cone 8, so that the winding tension can be adjusted to be substantially constant in a simple structure.

Description

DETAILED DESCRIPTION OF THE INVENTION Purpose of the Invention (Field of Industrial Application) This invention relates to an open-end spinning machine in which yarn spun at a constant speed from a spinning unit is wound onto a bobbin while being traversed by a traverse device, and a binding system. The present invention relates to a winding tension correction device for a spinning machine such as a spinning device.

(Prior Art) In this type of spinning machine, the distance from the traversing fulcrum to the winding position of the bobbin changes due to yarn traverse, resulting in large tension fluctuations. In addition, when winding a cone, the winding speed is different between the large diameter side and the small diameter side of the cone, and since the yarn is wound more on the large diameter side than on the small diameter side, fluctuations in the winding tension are more likely to occur. growing. Therefore, in order to absorb the fluctuations in tension as described above, this type of spinning machine is generally provided with a winding tension correction device. Conventionally, a winding tension correction device has been used that adjusts yarn tension using an adjustment lever that swings around a fixed axis due to its own weight. However, this type of self-weight type tension correction device has a drawback in that the tension adjustment function is lost when the tension is low due to the structure and mounting position. In order to prevent the tension adjustment function of this self-weight type tension correction device from being lost when the tension is low, a coil spring is used to bias the swingably supported adjustment lever in the direction of increasing the thread path length. A winding tension correction device of the following has been proposed. However, the spring-type winding tension correction device also has the disadvantage that it acts weakly when the yarn tension is weak and acts strongly when the yarn tension is strong, and the tension is increased when the yarn tension is strong due to the action of the adjustment lever.

July 19, 1970, to eliminate the drawbacks of this conventional device.
The driver'-
A winding tension correction device has been proposed that works to adjust the yarn tension by actively changing the storage period of the yarn in conjunction with the thread movement. As shown in FIG. 5, this device is constructed by spinning from a spinning unit 1, pulling it out at a constant speed by a draw-off roller 2 and a top roller 3, and traversing it through a guide bar 4 and a traverse guide 5, while a winding drum 6. A pair of guide rollers 9 and 10 are disposed at fixed positions along the travel path of the yarn Y, which is wound as a cone 8 onto the bobbin 7, which is rotated in contact with the bobbin 7. Then, thread guide section 1 at the tip
The adjustment lever 11 is arranged so that the guide roller 1a can swing between the guide rollers 9 and 10.
Between 0 and 0, the amount of yarn Y stored is actively changed. The adjustment lever 11 is rotatably supported at its base end by a pin 12, and at its intermediate portion, one end is connected via a pin 14 to a control rod 13 that is reciprocated in the longitudinal direction of the machine in conjunction with the traverse guide 5. The control lever 15 is connected to the other end of the control lever 15 via a link 16. A guide groove 17 is transparently provided in the control lever 15, and a rotation shaft 18 rotates in conjunction with the rotation of a bobbin holder (not shown) as the winding diameter of the cone 8 increases.
An adjusting member 19 whose base end is fixed to is protruded from the distal end thereof and is connected to the adjusting member 19 via a pin 20 which is fitted into the guide groove 17 . Therefore, in this device, the control lever 1 is moved around the bin 20 by the reciprocating movement of the control rod 13.
5 is swung, and the swiveling motion is transmitted to the tension adjustment lever 11 via the link 16, so that the tension of the yarn Y stored between the guide rollers 9 and 10 is positively changed. Furthermore, as the winding diameter of the cone 8 increases, the adjustment member 19 is rotated counterclockwise in FIG. The swinging range of the tension adjustment lever 11 that swings via the tension adjustment lever 11 is changed.

In this winding tension correction device, the amount of stored yarn Y is automatically changed as the winding diameter of the cone increases, so the amount of variation in winding tension is smaller than that of the self-weight type or spring type winding tension correction device. Although it will be very small, the mechanism for changing the swing range of the tension adjustment lever will become complicated, and the bottle 20 protruding from the adjustment member 19 that constitutes the mechanism will slide along the guide groove 17. Therefore, there is a problem with durability.

(Problems to be Solved by the Invention) This invention solves the problem of large fluctuations in winding tension in the gravity-type or spring-type winding tension correction device and the thread traverse proposed to solve this problem. This invention solves problems such as the complexity of the mechanism and insufficient durability in the winding tension correction device of the type that actively reserves and discharges the yarn.

Structure of the Invention (Means for Solving the Problems) As a means for solving the above problems, in this invention, the yarn spun at a constant speed is wound around a bobbin while being traversed by a traverse device. In a spinning machine, an upper and lower one-phase guide is provided in the thread travel path between a draw-off roller and a traverse device, and the guides are moved between the two guides with a constant stroke in conjunction with the traverse movement of the traverse device. A tension adjusting member that swings in the horizontal direction is provided, and the upper guide of the set of guides is arranged to be rotatable in a direction perpendicular to the longitudinal direction of the machine at its base end. At the same time, we adopted a configuration in which the arm is connected to the arm of the bobbin holder via a link.

(Function) In this invention, the tension adjustment member swings in a substantially horizontal direction between the guides with a constant stroke in conjunction with the traverse movement of the traverse device, so that the tension adjustment member engages with both guides and the tension adjustment member. The reserve amount of the yarn Y traveling between the two guides is changed in conjunction with the traverse movement. Further, as the winding diameter of the cone increases, the arm of the bobbin holder is moved upward, and at this time, the guide disposed above among the guides for one silk is moved above the arm of the bobbin holder via a link. The thread is rotated upward as the thread moves, and the distance between the two guides increases as the winding diameter increases, so even though the tension adjustment member swings at a constant stroke, the amount of thread reserved between the guides gradually decreases. Become. That is, when the fluctuation range of the winding speed between the large diameter side and the small diameter side is large, a large reserve length is taken, and when the fluctuation range is small, a small reserve length is taken.

(Embodiment) An embodiment embodying the present invention will be described below with reference to FIGS. 1 to 4. Above the top roller 3, a guide plate 21 having a transparent guide groove 21a extending in a direction perpendicular to the longitudinal direction of the machine frame is arranged and fixed to a machine frame (not shown). A guide bar 22 is disposed above the guide plate 21 as an upper guide for guiding the yarn Y guided upward through the guide groove 21a to the traverse guide 5. The guide bar 22 has its base end fixed to a boss portion 24a of a rotary lever 24 rotatably supported on a support shaft 23 extending in the longitudinal direction of the machine frame at the lower rear side of the winding drum 6. The rotary lever 24 is formed with a long hole 25 extending in its longitudinal direction, and one end of the link 28 is rotatably connected to the arm 26a of the bobbin holder 26 via a pin 27. It is rotatably connected via two pins that are fixed so as to be movable and adjustable along 25. Information board 2
A swing rod 30 is disposed between the kite bar 22 and the kite bar 22 along the longitudinal direction of the machine, and is reciprocated at a constant stroke in conjunction with the traverse movement of the rubber guides 1 to 5. A tension adjusting member 31 having a thread guide portion 31a formed at its tip is provided to protrude forward in a state perpendicular to the swing rod 30.

Next, the operation of the apparatus configured as described above will be explained. The yarn Y spun by the spinning unit 1 and actively drawn out by the draw-off roller 2 and top roller 3 is guided @
21a, the thread is guided to the traverse guide 5 via the thread guide portion 31a of the tension adjusting member 31 and the guide bar 22, and is wound onto the bobbin 7 as a cone 8 while being traversed by the left and right movement of the traverse guide 5. At this time, the tension adjustment member 31 is swung in the left and right direction with a constant stroke in conjunction with the traverse movement of the traverse guide 5, and the length of the shuttle between the traverse fulcrum and the winding point and the cone diameter change due to the traverse. Adjust tension fluctuations. That is, when the traverse guide 5 is located on the large diameter side of the cone, the circumferential speed of the cone increases and the path between the traverse fulcrum, that is, the guide bar 22 and the traverse guide 5 becomes the longest. is information board 2
The guide plate 1 is arranged at a position where the amount of the yarn Y reserved between the guide plate 21 and the guide bar 22 is minimized, that is, at a position where the yarn Y engaged with the guide plate 21 and the guide bar 22 is substantially straight.

Further, when the traverse guide 5 moves to the smaller diameter side of the cone 8, the winding diameter of the cone 8 becomes smaller≦, its circumferential speed becomes slower, and the amount of winding drops of the yarn Y decreases. Therefore, the yarn Y tends to become slack, but at that time the tension adjustment member 31 is moved to the right, so the yarn Y running between the guide plate 21 and the guide bar 22 passes through the yarn guide section 3.18. It runs in a bent state, the slack is absorbed, and the tension of the thread Y is adjusted to a constant level.

On the other hand, the variation in the winding amount between the large diameter side and the small diameter side of the cone 8 is large when the winding diameter of the cone 8 is small, as shown in Fig. 3, and as shown in Fig. becomes small when is large. Therefore, in order to keep the winding tension constant, as the diameter of the winding cone 8 increases, the guide plate 2
It is necessary to reduce the amount of yarn Y reserved between the guide bar 1 and the guide bar 22. In this device, cone 8
When the diameter of the wound ball increases and the arm portion 26a of the bobbin holder 26 is rotated upward, the guide bar 22 is rotated upward via the link 16 and the rotation lever 24, and the connection between the guide groove 21a and the guide bar 22 is caused. The distance gradually increases. Guide when the diameter of the rolled ball of the cone 8 is small, that is, the distance between the guide groove 21a and the guide bar 22 is small, and when the diameter of the rolled ball of the cone 8 is large, that is, when the distance between the guide groove 21a and the guide bar 22 is large. Bar 22 and thread guide section 31a
The reserve length R between them is compared. If the distance between the guide bar 22 and the thread guide portion 31cl in FIGS. 3 and 4 is H, H, l, LL, then the reserve length R,,
Ryu is represented by R,=L,-H,,R,=L-da, respectively.

L ÷ -1'', from La H low N (L, -H+) (1, + H+) - (L, 2- 1.) (L + Hl) (L, -1 - 1,) / (
L2-t12) -(1-2,000H!>/ (Ll+H+
) On the other hand, since Ll>Ll and Hl>Hl (L2+ I
'h) /(i-1+)-1,)>1.

Therefore, l+ H+>L2 Hl. That is, as the guide bar 22 moves upward as the diameter of the wound ball of the cone 8 increases, the amount of yarn Y reserved between the guide groove 21a and the guide bar 22 gradually decreases in response to the decrease in the range of variation in the winding amount. Therefore, fluctuations in winding tension can be reduced.

Furthermore, when changing the count, spinning speed, or changing the taper of the cone 8, it is necessary to change the rising speed of the guide bar 22, but in this device, the arm portion 2 of the bobbin holder 26
6a and the rotating lever 24 to which the guide bar 22 is fixed, the link 28 is connected so that its connection position can be adjusted along the elongated hole 25 formed in the rotating lever 24. This can be easily changed by adjusting the fixing position of the bin 29.

Note that the present invention is not limited to the above-mentioned embodiments, and for example, instead of the traverse guide 5 that reciprocates in the left-right direction as a traverse device, a cam groove for traverse is formed in the winding tram 6, and the thread is moved. It may also be applied to devices that perform traversal.

Effects of the Invention As detailed above, according to the present invention, even though the swing width of the tension adjustment member is constant, the reserve length can be set according to the diameter of the cone wound, resulting in a simple structure. This provides an excellent effect in that the winding tension can be adjusted to be approximately constant.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a device embodying this invention;
The figure is a side view, Figures 3 and 4 are front views for explaining the operation, and Figure 5 is a schematic perspective view showing a conventional device. Traverse guide 5, winding drum 6, cone 8, guide plate 21, guide groove 21a, guide bar 22, rotation lever 24
, slot 25, bobbin holder 26, arm 26a, link 2
8. Tension adjustment member 31, thread Y. Patent applicant: Toyota Industries Corporation, Agent
Patent Attorney On 1) Hironobu Figure 2 5Jm

Claims (1)

[Claims] 1. In a spinning machine that winds yarn spun at a constant speed onto a bobbin while being traversed by a traversing device, there are no upper or lower sections along the yarn travel path between the draw-off roller and the traversing device. a set of guides are disposed, and a tension adjustment member is disposed between the two guides that swings in a substantially horizontal direction with a constant stroke in conjunction with the traverse movement of the traverse device, and the set of guides The upper guide is arranged at its base end so as to be rotatable in a direction perpendicular to the longitudinal direction of the machine.
A winding tension correction device for a spinning machine, characterized in that it is connected to an arm of a bobbin holder via a link. 2. The guide disposed below is a guide plate that is fixed horizontally and has a guide groove transparent therein, and the guide disposed above is a guide plate that is fixed horizontally and has a guide groove formed through it. The guide bar according to claim 1 is a guide bar that is rotatably supported and fixed at its base end to a boss portion of a rotary lever that is connected to an arm portion of a bobbin holder via a link. Winding tension correction device for spinning machines. 3. In order to make it possible to change the distance from the center of rotation to the connection position with the link, the rotary lever is formed with a long hole extending in its longitudinal direction, and can be moved and adjusted along the long hole. 3. The winding tension correcting device for a spinning machine according to claim 2, wherein the device is connected to the link by a pin fixed to the link.