JP2733791B2 - Yarn winding device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a yarn winding device, and more particularly, to forming a transfer tail, fitting a yarn into a yarn holding means such as a yarn holding groove of a bobbin, and the like. The present invention relates to a yarn winding device capable of smoothly performing

[Conventional technology]

An apparatus for forming a transfer tail and inserting a thread into a thread holding groove formed with a bobbin is disclosed in
No. 85764 discloses that a traverse guide is provided on the upstream side of the bobbin mounted on the bobbin in the yarn traveling direction, and a yarn removing guide is further provided on the upstream side thereof. A thread guide groove having a relatively deep thread guide groove, comprising a combination of upper and lower two guides or a single guide, and providing a thread guide that can approach and separate from the running yarn. Approach the running yarn to a predetermined position, swing the yarn removing guide, slide the yarn removed from the traverse guide along the end surface of the yarn pulling guide, and drop it into the yarn pulling groove of the yarn pulling guide;
It is disclosed that a thread guide is moved in parallel with a bobbin holder so that a thread is fitted into a thread holding groove at an end of the bobbin.

By the way, in recent years, the speed of the winder has been increased, and a method of rotating and traversing a blade as disclosed in Japanese Patent Application Laid-Open No. 1-176786 has been adopted as a yarn traversing device. Is coming.

[Problems to be achieved by the invention]

In such a traverse device for rotating blades, when forming a transfer tail or inserting a thread into a thread holding groove of a bobbin, a conventional technique disclosed in Japanese Patent Application Laid-Open No. 57-85764 is used. When the method is adopted, the following problems occur.

According to the above conventional method, the distance between the circle drawn by the tip of the rotating blade and the yarn path when the yarn traverses is large. For this reason, the distance from the tip of the traverse guide until the yarn completely comes off is large. On the other hand, the thread pulling groove formed in the thread pulling guide is deep, the distance between the outer surface of the thread pulling guide, the thread pulling groove and the groove bottom is large, and when the thread pulling guide approaches the traveling yarn, The positional relationship between the yarn guide and the running yarn cannot be changed any further. For this reason, as shown in FIG.
When removing the yarn Y from 9a, 9b, as shown by a solid line, between the yarn removal guide and the end face of the yarn pulling guide until the yarn enters the groove provided in the yarn pulling guide as shown by a solid line. To
The yarn is greatly bent, and the contact angle increases. As a result, the yarn is squeezed, and there is a problem that the yarn breakage occurs in the yarn and the yarn hooking success rate decreases.

The above phenomenon becomes more remarkable as the winding speed of the yarn increases, and at a winding speed exceeding 5000 m / min, it becomes impossible to carry out the yarn hooking or the automatic yarn switching.

[Object of the invention]

Therefore, the present invention reduces the ironing of the yarn when the yarn removing guide removes the yarn from the traverse guide, prevents the yarn from fuzzing and breaking, and improves the yarn hooking success rate and the automatic switching success rate. The purpose is to:

[Means for achieving the task]

In the present invention, a bobbin provided with a yarn gripping means is mounted on a bobbin holder, a traverse device is provided upstream of the bobbin holder in the yarn traveling direction, and a yarn separating the yarn from a traverse guide of the traverse device further upstream. A detachment guide is provided, at a position facing the traverse guide across the running yarn, and from the vicinity of the traverse end opposite to the yarn gripping means provided on the bobbin as viewed in the bobbin axial direction from the vicinity of the yarn gripping means. And a guide movably in the axial direction of the bobbin holder, the guide having a projection forming a portion for receiving the yarn on the outer surface on the traverse guide side, and the yarn cooperating with the guide near the yarn gripping means. A yarn winding device, wherein a regulating guide that surrounds the road is provided so as to be retractable with respect to the guide so as to move away from the bobbin holder. Ri to achieve the above purpose.

(Operation)

In the present invention, the guide has a projection on the outer surface on the traverse guide side, which forms a portion for receiving the yarn. The guide has a traverse end opposite to the yarn gripping means provided on the bobbin when viewed in the bobbin axial direction. A regulating guide which is movable in the axial direction of the bobbin holder from the vicinity to the vicinity of the yarn gripping means and cooperates with this guide in the vicinity of the yarn gripping means so as to surround the yarn path is moved away from the bobbin holder. It is provided so that it can be retracted from the guide.

When the yarn is removed from the traverse guide by the yarn removal guide, the yarn is formed by the protrusion on the outer surface of the guide by retracting the regulating guide from the guide near the traverse end opposite to the yarn gripping means as viewed in the bobbin axis direction. The yarn is received at the receiving portion and the yarn is guided. The portion for receiving the thread is formed on the outer surface of the guide, and the regulating guide is retracted. During this time, the thread is not greatly bent between the guide and the guide and the regulating guide, and the thread is ironed. Not receive.

Then, in the vicinity of the bobbin thread gripping means, the retracted guide returns from the retracted position to a position surrounding the thread path, surrounds the thread path with the guide and the regulation guide, and surrounds the thread path with the thread guide and the regulation guide. The traveling yarn is gripped by the yarn gripping means.

Thereafter, while the yarn path is regulated by the yarn guide and the regulation guide, the yarn wound on the bobbin is moved toward the center of the traverse to form a transfer tail.

Next, the regulation guide is retracted within the traverse width to release the yarn from the yarn guide, and the traverse guide traverses the yarn.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings showing examples of the present invention.

FIG. 1 is a front view of an automatic switching winder incorporating the apparatus of the present invention, and FIG. 2 is a view as viewed from the direction indicated by the arrow A in FIG. 1, in which a bracket 31 is omitted from the left half in the figure. FIG. 3 and FIG. 5 show front views during yarn switching. 4 and 6 are views as viewed from the direction indicated by the arrow A during yarn switching.

In FIG. 1, two bobbin holders 2 and 3 are rotatably protruded from a turret table 1, and the turret table 1 is rotatably incorporated into a machine frame F via bearings (not shown).

The bobbin holders 2 and 3 each have eight bobbins 4,
The package 6 is wound around the bobbin 5.

A slide block 30 is provided above the turret table 1 so as to be vertically movable, and a contact roller 7 is rotatably supported by a frame 8 protruding from the slide block 30.

Above the contact roller 7, a traverse device 9 is provided. The traverse device 9 is provided with rotatable splashes 9a and 9b, and the yarn Y is traversed by the blades 9a and 9b.

Above the traverse device 9, a yarn removing guide 10 for removing the yarn Y from the rotating splashes 9 a and 9 b is provided with a fluid pressure cylinder 12.
And is slidably provided in the direction of arrow C by being connected to the piston rod 12a.

On the right side of the contact roller 7, a frame 8 'projects from the slide block 30 with the yarn Y interposed therebetween, and the frame 8' is provided with a yarn pulling guide 11. That is,
A bracket 31 is swingably supported around a pin 31a attached to the frame 8 ', a thread pulling guide 11 is attached to a lower end of the bracket 31, and a piston of the fluid pressure cylinder 17 is provided at an intermediate portion of the bracket 31. The rod 17a is connected, and the bracket 31 is swingable in the direction of arrow D by the cylinder 17.

As shown in FIG. 1, the yarn pulling guide 11 includes a guide 13 and a regulating guide 14 which are provided vertically.

Hereinafter, details of the yarn pulling guide 11 will be described with reference to FIG. In FIG. 2, pins 22, 22 'are protruded from the bracket 31 at intervals in the longitudinal direction.
2 ′, a long hole 22a extending in the longitudinal direction formed in the guide 13,
The guide 13 is movable along the bracket 31 in the longitudinal direction (the longitudinal direction in FIG. 2).

The hydraulic cylinder 23 is attached to the pin 28 protruding from the bracket 31.
Is supported, and the piston rod 23a of the fluid pressure cylinder 23 is connected to the guide 13 via the pin 29. Therefore, the guide 23 is moved over the bracket 31 by the hydraulic cylinder 23.
It can be moved in any direction. Note that a stopper 25 protrudes from the right end of the bracket 31.

As shown in FIG. 2, the guide 13 is formed with a number of right-angled triangular projections 13c corresponding to the bobbin mounted on the bobbin holder, and the outside of the right-angled vertex is a portion 13a for receiving a thread. I have. An eaves-like projection 13b that covers the portion 13a is projected outside the distal end of the projection 13c in parallel with the longitudinal direction of the guide 13 outside the portion 13a that receives the yarn.

Further, pins 21 and 21 'are fixed to the guide 13 at locations adjacent to the elongated holes 22a and 22a'. Further, the regulation guide 14 has oblong holes 21a and 21a 'formed obliquely to the longitudinal direction of the regulation guide 14. Pins 21 and 21 'fixed to guide 13
And the elongated holes 21a, 21a 'formed in the regulating guide 14 are engaged,
The restricting guide 14 is movable along oblong holes 21a and 21a 'in a direction oblique to the longitudinal direction of the guide 13 (the direction of arrow F in FIG. 2). The regulating guide 14 has a triangular projection 14a facing the opposite direction to the right triangular projection of the guide 13.
Are formed.

In the vicinity of the right end in FIG. 2, a substantially triangular lever 26 is swingably attached to the guide 13 via a pin 20, as shown in FIGS. A pin 19 is fixed to the lever 26, and the pin 19 is engaged with an elongated hole 19a formed in the regulating guide 14. A tension coil spring 30 is hung between the pin 19 fixed to the lever 26 and the pin 18 fixed to the guide 13, and gives the lever 26 a rotational force around the pin 20.

The operation will be described below with reference to FIGS. First
The drawing shows a state in which the yarn Y is being wound up, in which the yarn removing guide 10 retreats in the direction C and the yarn pulling guide 11 retreats in the direction D and is out of the yarn path of the yarn Y. In the state shown in FIG. 2, the guide 13 is moving in the direction opposite to the direction E, and the portions 13a for receiving the respective yarns are provided on the bobbin as viewed in the bobbin axis direction as shown by solid lines in FIG. It is located outside the traverse range near the traverse end on the opposite side of the thread gripping groove. As described above, a right-handed rotational force is applied to the lever 26 by the spring 30 hung between the pin 19 fixed to the lever 26 and the guide 13, and this rotational force is applied to the pin fixed to the lever 26. The light is transmitted from the control guide 19 to the control guide 14 through an elongated hole 19a formed in the control guide 14, and the control guide 14 is at the retracted position.

When the yarn reaches a predetermined winding amount, the copy bobbin holder 2 is activated, and when the bobbin holder 2 reaches a predetermined rotation speed,
The turret table 1 is rotated by a motor (not shown).

In FIG. 3, the regulation guide 14 is retracted with respect to the guide 13 as described above. In this state, the turret table 1 rotates clockwise, and then the thread removing guide 10
, The leading end of which removes the yarn Y from the rotating splashes 9a, 9b. The yarn Y wound on the bobbin holder 3 passes between the yarn removing guide 10 and the package 6. In this state, the guide 13 is moved on the bracket 31 in the direction E (FIG. 2) by the operation of the cylinder 23 (FIG. 2), and the yarn Y receives the yarn of the guide 13 as shown in FIG. In the direction E (FIG. 2, FIG.
(To the right in the figure). During this time, the lever 26 is a guide
It is moved in the E direction as if it were integral with 13 (without rotating relative to the guide).

At this time, since the portion 13a for receiving the yarn is formed on the outer surface of the guide 13, as in the prior art described with reference to FIG. The path is not greatly bent. Further, since the regulating guide 14 is retracted, the yarn Y slides on the outer surface of the guide 13 and is received by the portion 13a for receiving the yarn, but does not contact the regulating guide 14 and the yarn Y And regulatory guide 14
It will not bend and will not be squeezed.

When the guide 13 reaches the vicinity of the stroke end, the lever 26 is moved to the stopper 25 protruding from the right end of the bracket 31.
The cam surface 26a of the above comes into contact (FIG. 6). The rightward movement of the lever 26 is restricted by the stopper 25, and the rightward movement of the guide 13 causes the lever 26 to rotate left (counterclockwise) around the pin 20. By the counterclockwise rotation of the lever 26, the regulating guide 14, which has been retracted to the rear of the guide 13 (in a direction away from the bobbin holder), is moved in the counter-E direction, and the pins 21, 21 'and the slots 21a, 21a'. A part 1 where the protrusion 14a is guided in the anti-F direction along
3b, the yarn Y is formed by the two portions 14a, 13a and 13b.
The yarn path of is surrounded. As a result, the yarn Y is regulated at the end surface position of the package 6 corresponding to the yarn holding groove (not shown) provided on the bobbin.

Next, as shown in FIG. 5, the yarn removing guide 10 returns in the anti-C direction.
Thus, the yarn is regulated so as not to contact the rotating splashes 9a and 9b of the traverse 9. In this state, the left turning force is continuously applied to the lever 26 by the tension coil spring 30.

Further, the turret table 1 rotates clockwise, the bobbin holder 2 moves in the axial direction (counter-E direction), and the thread gripping groove (not shown) provided on the bobbin 4 is threaded around the end face of the package 6. The yarn Y is bunch-wound on the bobbin 4 by engaging with the yarn.

Next, the bobbin holder 2 moves in the E direction, while the cylinder 23 moves backward, the guide 13 and the regulating guide 14 move in the anti-E direction, and the yarn moves relative to the bobbin holder, so that the bobbin 4 is transferred onto the bobbin 4. A tail is formed.

At this time, in the vicinity of the end surface of the package, the yarn Y is regulated by the portion 13a of the guide 13 which receives the yarn, and the movement width of the yarn is regulated.

When the guide 13 approaches the vicinity of the center of the package 4, the movement width of the yarn is regulated by the protrusion 14a of the regulation guide 14.

Next, when the portion 13a of the guide 13 for receiving the thread exceeds the center of the package 4, the other cam surface 26b of the lever 26 comes into contact with the right end surface of the rectangular portion 24 projecting from the bracket 31, and the lever 26 is pinned. The control guide 14 is rotated to the right (clockwise) around 20, the control guide 14 is moved in the F direction (FIG. 2) (the control guide 14 is retracted from the guide 13), and the yarn Y is The thread is released from 13b and starts traversing.

As described above, the formation of the transfer tail and the insertion of the yarn into the yarn holding means of the bobbin are completed, and the steady winding of the yarn on the bobbin is started.

If the yarn breaks and the suction device inserts the yarn between the contact roller 7 and the yarn pulling guide 11, the second
In the figure, by moving the yarn pulling guide in the direction D and moving the yarn removing guide 10 in the direction C by the cylinder 17, the yarn can be easily inserted so that the yarn does not come into contact with the rotating splashes 9a and 9b. . Cover when the thread breaks
32 is moved in the G direction by a cylinder (not shown),
The supply of the yarn from the upper portion is cut off to prevent the yarn from being wound around the rotating splashes 9a and 9b.

In the present embodiment, the winding machine for winding eight packages on one bobbin holder has been described, but the number of packages formed on one bobbin holder is not limited to that of the embodiment.

In the present embodiment, the automatic switching winder has been described. However, the present invention can be applied to a manual winder in which a yarn is wound by a suction device.

In this embodiment, the regulation guide is operated by the lever 26, but may be operated by appropriate means such as a fluid pressure cylinder and an electromagnetic solenoid.

In this embodiment, the yarn is released from the guide 13 after passing the center of the traverse after the transfer tail is formed. However, when the yarn is released before reaching the center of the traverse, as shown in FIG. It is preferable that the side connected to the right-angled vertex be straight, and that the restricting guide 14 be formed with an eave-shaped protrusion 14b.

〔The invention's effect〕

According to the present invention, since the regulation guide can be retracted with respect to the guide, even in a traverse device using a rotary sprung, since the squeezing of the thread when removing the thread from the thread removal guide is small, the fluffing of the thread can be reduced. The thread breakage is eliminated, and the switching success rate and the threading property are improved.

[Brief description of the drawings]

FIG. 1 is a front view of an automatic switching winder incorporating the device of the present invention, FIG. 2 is a view taken in the direction of arrow A in FIG. 1, FIG. 3 and FIG. FIG. 4 and FIG. 6 show A during thread switching.
FIG. 7 is a partial plan view of another embodiment, and FIG.
The figure is a front view of the conventional device. 2, 3, bobbin holder, 4, 5 bobbin, 9 traverse device, 10 thread removal guide, 11 thread guide, 13 guide, 13a thread receiving portion, 13c Projection, 14 …… Regulatory guide.

Claims (1)

(57) [Claims] 1. A bobbin provided with a yarn gripping means is mounted on a bobbin holder, a traverse device is provided upstream of the bobbin holder in the yarn traveling direction, and a yarn for isolating the yarn from a traverse guide of the traverse device further upstream. A detachment guide is provided, at a position facing the traverse guide across the running yarn, and from the vicinity of the traverse end opposite to the yarn gripping means provided on the bobbin as viewed in the bobbin axial direction from the vicinity of the yarn gripping means. And a guide movably in the axial direction of the bobbin holder, the guide having a projection forming a portion for receiving the yarn on the outer surface on the traverse guide side, and the yarn cooperating with the guide near the yarn gripping means. A yarn winding device, wherein a regulating guide that surrounds a road is provided so as to be retractable with respect to the guide so as to move away from the bobbin holder.