JP2872232B2 - Yarn winding device and its yarn hooking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn winding device and a yarn hooking device.

[0002]

2. Description of the Related Art Conventionally, a winding device 51 for winding a yarn into a package is, for example, as shown in FIG. 5 (a), engaged with a pair of left and right bobbin holders 53, 54 rotatably supported by a cradle arm 52. Bobbin B (package P) held and rotated by pressing against a friction roller (not shown)
The traverse guide 55 winds the yarn Y while traversing.

In such a winding device 51, when the full package P is doffed or when the yarn Y is hung on the empty bobbin B at the start of operation, the end of the yarn Y is suctioned. A thread hook formed by cutting the thread Y in the bobbin holder 53 by hanging the bunch winding guide 57 in a state where the thread Y is gripped by the member 56 and the like, and further moving the suction member 56 so as to straddle the bobbin holder 53 from the bobbin B side. 5
3a (hook), bunch winding guide 57 as it is
5B, or, as shown in FIG. 5B, a predetermined number of bunch windings Yb are performed along slits S carved at the bunch winding positions of the bobbin B instead of the bunch winding guides 57. After preventing Y from coming off, the yarn Y is transferred to the traverse guide 55 to shift to main winding.

However, when the yarn is hooked, the yarn end sucked by the suction member 56 is pulled out, wrapped around the outside of the bobbin holder 53 as shown by Ya in the figure, and if such a package P is doffed, , The remaining yarn Y
There was a problem that a was dragged. Further, if the yarn Y is cut by the yarn hooking portion 53 before forming the bunch winding, there is a problem that the yarn Y does not wind around the bobbin B.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-described problems with the prior art, and therefore, it is possible to reliably carry out the yarn hooking on the empty bobbin and the yarn end treatment, and the yarn winding is suitable for the automatic doffing. It is an object of the present invention to provide a picking device and a yarn hooking device thereof.

[0006]

A boss is rotatably supported by a cradle arm and fits with a bobbin for winding a yarn, and a flange is provided upright from a peripheral surface of the boss to support a bobbin end surface. and, e Bei a pair of bobbin holders Jisuru contracture bobbin from both sides, the yarn winding device forming the thread hook by the notch part on the outer periphery of the flange of at least one of the bobbin holders
, The deepest part of the thread hooking part abuts on the bobbin end face
Over the part. Further, an outer collar is provided on the side opposite to the bobbin of the collar supporting the bobbin end face, a circumferential groove is formed between them around the entire circumference of the bobbin holder, and a thread hooking part is also formed on the outer collar, A fixed blade was provided in the peripheral groove. In this case, it is preferable that the yarn hooking portion of the outer brim is disposed with a phase difference behind the yarn hooking portion of the bobbin side flange in the bobbin rotation direction. Then, as a yarn hooking device to the yarn winding device, the yarn hooking arm rotatable in a virtual plane substantially parallel to the bobbin rotation axis direction from the standby position toward the bobbin holder side is turned around the bobbin holder. An outer thread locking portion protruding at a moving radius position, a bobbin positioned at a turning radius position located rearward in the turning direction with respect to the outer thread locking portion, and intersecting the bobbin holder on an extension of the turning locus; A side thread locking portion is protruded.

[0007]

[Function] When the yarn is guided from the bobbin side and brought into contact with the collar of the rotating bobbin holder, the yarn is hooked on the yarn hooking portion,
The yarn on the bobbin side of the yarn hooking portion is securely wound around the bobbin by being clamped between the collar and the bobbin end surface, and thereafter, the yarn end ahead of the yarn hooking portion can be cut off.

Further, in the apparatus according to the second aspect, the yarn is hooked on the bobbin-side yarn hooking portion and the outer yarn hooking portion, and the bobbin-side yarn is held between the bobbin side collar and the bobbin end face.
Next, the yarn between the yarn hooking portions is cut by the fixed blade. In this case, if the outer yarn hooking portion is arranged rearward in the bin rotation direction as described in claim 3, even if the notch of the outer yarn hooking portion is made shallow, the yarn will surely reach the deepest portion of the bobbin-side yarn hooking portion. As it is pulled in, the yarn on the bobbin side can be securely clamped
Since the outer thread hooking portion is shallow, the thread is located at the shallow portion of the circumferential groove, and the thread reliably contacts the fixed blade. Further, since the yarn abuts on the fixed blade obliquely, the impact of the yarn cutting is small and the yarn can be cut cleanly.

In the yarn hooking device according to the fourth aspect,
By the rotation of the thread hook arm, the outer thread locking portion locks the yarn captured by the suction member or the like and guides the yarn to the outside of the bobbin holder. From the yarn supply side, is guided to the bobbin side of the bobbin holder, and the thread that is slantly stretched between these thread locking portions is looped over the thread hooking portion of the bobbin holder. At this time, since the yarn continuing on the yarn supply side is guided by the yarn engaging portion on the bobbin side, the hung yarn is securely clamped between the bobbin end face and the collar. Further, the thread hook arm is stopped at that position for a while, and performs the bunch winding by the bobbin-side thread locking portion.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

FIG. 1 and FIG. 2 show a yarn winding device 1 and a yarn hooking device 2 according to an embodiment of the present invention. In the drawing, a yarn winding device 1 is held from both sides by a pair of left and right bobbin holders 4 (omitted on the left side in the figure) rotatably supported by a cradle arm 3, and is a bobbin that rotates by pressing against a friction roller 5. The yarn Y is wound around a B (package P) while being traversed by a traverse guide 6.

The bobbin holder 4 has a cylindrical projection 40 fitted to the open end of the bobbin B, rises from its peripheral surface, abuts against the end surface of the bobbin B, and supports the bobbin B in the direction of its rotation axis. A flange 41 is provided, and a flange 42 is further provided on the side of the flange 41 opposite to the bobbin B. A circumferential groove 43 is formed between the flange 41 and the entire circumference of the bobbin holder 4.

As shown in FIGS. 3 and 4, a part of the outer periphery of the collar 41 is notched to form two thread hooks 41a at intervals of 180 °. The thread hook 4
1a and 41a are cut out obliquely in the direction of rotation of the bobbin holder 4 in a wedge shape, and the deepest portion thereof reaches the convex portion 40 beyond the portion of the collar 41 abutting on the bobbin B.

The collar 42 is provided with the thread hook 41
The thread hooking portions 42a, 42a are formed so as to be shifted rearward in the bobbin rotation direction by a phase difference θ from the thread hooking portions 42a, 42a. The thread hooks 42a, 42a are provided sufficiently shallow as long as the thread Y can be hooked for the reason described later.

Further, the fixed blade 31 is positioned in the circumferential groove 43 and
Is provided. The fixed blade 31 is attached to the cradle arm 3.
, And is located forward of the threading position in the bobbin rotation direction.

On the yarn introduction side of the yarn winding device 1, the yarn hooking device 2 can rotate a yarn hooking arm 20 having two yarn locking portions 21 and 22 formed at the tip outside the traverse range of the yarn Y. Is provided. The threading arm 20 is fixed to an output shaft of a rotary actuator 24 fixed to a bracket 23, and the standby position indicated by 20 'in FIG. 1 in a virtual plane parallel to the bobbin rotation axis direction by the operation of the rotary actuator 24. , And reciprocate in a range of about 180 ° between a thread hooking position indicated by a solid line in FIG. As the rotary actuator 24, for example, a fluid pressure oscillating motor, a rotary solenoid, or the like can be used, and the reciprocating motion of a translational fluid pressure cylinder may be converted into a rotary motion by a rack and pinion mechanism or the like.

The direction of travel of the thread locking portions 21 and 22 on the bobbin holder 4 side by the rotation of the thread hook arm 20 is substantially parallel to the axial direction of the bobbin B.
1 and 22, one of the thread locking portions 22 is protruded at a relatively small turning radius position that does not intersect with the collars 41 and 42 of the bobbin holder 4, and the other thread locking portion 21 is 1 is located on the left side in FIG. 1 that is rearward in the rotation direction with respect to the thread locking portion 22 and, on an extension of the rotation trajectory, intersects with the collars 41 and 42, a relatively large rotation radius. It protrudes at the position.

As shown in FIGS. 2 to 4, each of the thread locking portions 21 and 22 is provided at the lower end of a bent portion where the tip of the thread hook arm 20 is bent downward. Part 21,
The yarn Y locked to the hook 22 is prevented from intersecting with the yarn hooking arm, and has a hook shape as shown in FIG. As shown in FIG. 1 or FIG. 4, the distal end of the thread hook arm 20 is formed separately from the slot 25.
Are fixed integrally with the base end side with bolts 26 via
The positions of the thread locking portions 21 and 22 can be adjusted according to the diameter of the bobbin B (and the bobbin holder 4). Also, 2
7, 28 are stoppers.

Further, on the yarn introduction side of the yarn winding device 1, FIG.
And a cutter 7 and a suction pipe 8 as shown in FIG. The cutter 7 has a cutting blade 11 fixed inside a hook 10 formed on a cutter plate 9 that can swing up and down, and a suction pipe 8 is opened below the yarn path of the yarn Y0 reaching the cutter 7. In this part, the window 12 is opened in the cutter plate 9.

Next, the operation of the embodiment will be described with reference to the case of doffing.

When the package P is fully loaded, the cutter plate 9 swings upward as shown by a two-dot chain line in FIG.
It is cut by the cutting blade 11, and the cut yarn end is sucked and captured by the suction pipe 8 like Y1. Next, the cradle arm 3 swings rearward (left side in FIG. 2) to open, and discharges the full package P onto a belt conveyor (not shown) behind the yarn winding device.

Subsequently, the empty bobbin B is
Is supplied from above, is mounted on the bobbin holder 4, and the cradle arm 3 swings clockwise in FIG. 2 to press the empty bobbin B against the friction roller 5, whereby the empty bobbin B and the bobbin holder 4 start rotating. I do.

In this state, the rotary actuator 24 is actuated, and the threading arm 20 rotates from the standby position indicated by 20 'in FIG. 1 as indicated by an arrow a in FIG. The yarn Y1 is locked by the yarn locking portion 22 in the forward direction in the traveling direction, and further, the yarn locking portion 2 is rotated while the yarn hooking arm 20 rotates as shown by the arrow b in FIG.
The yarn (Y1) continuing from 2 to the yarn supply side is locked by the yarn locking portion 21.

At the rotation end of the threading arm 20, one thread engaging portion 22 is located beyond and outside the collar 42, and the other thread engaging portion 21 is located on the bobbin side of the collar 41. The yarns locked by the two yarn locking portions 22 and 21 are guided to the bobbin holder 4 as indicated by solid lines Y2, Y3 and Y4 in FIG.

Then, the yarn Y3, which is obliquely stretched between the two yarn engaging portions 22 and 21, first comes into contact with the brim 41, is hooked on the yarn hooking portion 41, and rotates the bobbin holder 4. As a result, the yarn Y3 (a) on the yarn supplying side of the yarn hooking portion 41a, that is, the yarn locking portion 21 side is pulled into the collar 41 as shown in FIG.
And the end face of the bobbin B.

In parallel with this, the yarn Y3 of the yarn hooking portion 41a on the yarn hooking portion 22 side is hooked on the yarn hooking portion 42a of the outer collar 42, and is slanted between these yarn hooking portions 41a, 42a. The yarn Y3 (b) reaches the fixed blade 31 with the rotation of the bobby holder 4, is cut by the fixed blade 31, and the cut yarn end (Y2) is sucked and removed by the suction pipe 8.

Then, the thread hook arm 20 is stopped at the thread hooking position for a while, and as shown in FIG.
The bunch winding is performed while guiding the yarn Y4 on the yarn supply side in step 1, and after forming a predetermined bunch winding, the yarn hooking arm 20
Rotating counterclockwise as indicated by arrow b in FIG.
However, when the yarn locking portion 21 "and the yarn Y5 wound around the bobbin B become substantially parallel at 20" on the way, the yarn Y5 is removed from the yarn locking portion 21 ". The yarn Y5 comes off and descends to the normal running position, and the yarn Y5 is caught by the traverse guide 6 and shifts to main winding.

In the above-described embodiment, an example is shown in which the thread hooking device 2 is arranged for each weight and is implemented as a single-weight automatic doffer. However, a similar device is provided on a traveling body that moves between the weights. It can also be implemented as a formula autodoffer. Further, in the above-described embodiment, the case where the yarn is hooked automatically by the yarn hooking device 2 has been described. However, the yarn winding device of the present invention employs another yarn hooking device or a case where the yarn is hooked manually using a suction gun or the like. It is also effective.

[0029]

Since the yarn winding device and the yarn hooking device of the present invention are configured as described above, the following effects can be obtained.

The cradle arm is rotatably supported,
Respectively, and the convex portion to be fitted to the bobbin to wind the yarn, to form a flange for supporting the by bobbin end surface rising from the convex portion peripheral surface, e Bei the contracture Jisuru pair of bobbin holders to the bobbin from both sides, at least one A part of the outer periphery of the collar of the bobbin holder is cut out to form a yarn hooking part;
The deepest part of the hanging part will exceed the part that contacts the bobbin end face
As a result , the yarn passed over the yarn hooking section is clamped between the collar and the bobbin end surface, so that the yarn is securely wound around the bobbin. Become.

Further, an outer collar is provided on the side opposite to the bobbin of the collar supporting the bobbin end face, a circumferential groove is formed between them on the entire circumference of the bobbin holder, and a thread hooking portion is also formed on the outer collar. In addition, since the fixed blade is provided in the circumferential groove, the end of the yarn hung on the bobbin can be reliably cut in the vicinity of the position where the yarn is hung. For this reason, the end of the yarn hung on the bobbin is the shortest, and the yarn end does not get entangled with the bobbin holder or slip off during doffing. In addition, since the yarn end is cut immediately after the yarn is wound, if the yarn end has been previously suctioned and captured by the suction member, the captured yarn end will be cut before being pulled out from the suction member, The cut yarn end can be sucked and removed by the suction member as it is.

Further, since the yarn hooking portion of the outer collar is arranged with a phase difference rearward in the bobbin rotation direction with respect to the yarn hooking portion of the bobbin-side collar, the yarn is wound by the bobbin-side yarn hooking portion. The notch on the outer thread hook can be made shallower while firmly clamping, and the thread can be cut more reliably, and the deep notch on the bobbin side thread hook is safe for workers without being exposed to the outside. is there.

As a yarn hooking device for the yarn winding device, a bobbin holder and a tip of a yarn hooking arm rotatable from a standby position toward a bobbin holder in a virtual plane substantially parallel to the bobbin rotation axis direction are provided. A turning radius protrudingly provided at a turning radius position that does not intersect, the turning radius being located rearward in the turning direction with respect to the outer thread holding portion, and intersecting with the bobbin holder on an extension of the turning locus. Since the bobbin-side thread locking portion is protruded at the position, the thread can be wound around the bobbin holder by a simple operation of rotating the thread hook arm, and the automatic doffer can be easily configured. In addition, by guiding the yarn at the bobbin-side yarn locking portion, the yarn can be securely clamped between the bobbin end face and the brim. A predetermined bunch winding can be formed, and a bunch winding slit on the bobbin peripheral surface and a bunch winding thread guide can be eliminated.

[Brief description of the drawings]

FIG. 1 is a plan view showing a yarn winding device and a yarn hooking device according to an embodiment of the present invention.

FIG. 2 is a side sectional view showing a yarn winding device and a yarn hooking device according to the embodiment of the present invention.

FIG. 3 is a perspective view of a main part showing a yarn winding device and a yarn hooking device according to the embodiment of the present invention.

FIG. 4 is a main part side view showing the yarn winding device and the yarn hooking device according to the embodiment of the present invention.

FIG. 5 is a plan view showing thread hooking on a conventional thread winding device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Yarn take-up device 2 Threading device 3 Cradle arm 4 Bobbin holder 20 Threading arm 21, 22 Thread locking portion 31 Fixed blade 41, 42 Collar 41a, 42a Threading portion 43 Peripheral groove B Bobbin Y Thread

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-61156 (JP, U) JP-A-4-86673 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B65H 54/00-54/553 B65H 65/00

Claims (4)

(57) [Claims] 1. A bobbin which is rotatably supported by a cradle arm and which fits with a bobbin for winding a yarn, and a flange which stands up from a peripheral surface of the convex portion and supports a bobbin end face. Equipped with a pair of bobbin holders to hold from both sides
In a yarn winding device in which a part of the outer periphery of the collar of at least one bobbin holder is cut out to form a yarn hooking portion,
The deepest part of the thread hooking part goes over the part that contacts the bobbin end face.
Yarn winding device, characterized in that Eteiru. 2. A bobbin which is rotatably supported by a cradle arm and which fits with a bobbin for winding a yarn, and a flange which stands up from the peripheral surface of the convex portion and supports a bobbin end face. Equipped with a pair of bobbin holders to hold from both sides
In a yarn winding device in which a part of the outer periphery of the collar of at least one bobbin holder is cut out to form a yarn hooking portion,
The thread hooking portion may reach a portion in contact with the bobbin end face.
On the other hand, an outer collar is provided on the side opposite to the bobbin of the collar, a circumferential groove is formed therebetween over the entire circumference of the bobbin holder, and a thread hooking portion is also formed on the outer collar, and the outer collar is formed. A yarn winding device characterized in that a fixed blade is provided in a groove. 3. The yarn winding device according to claim 2, wherein the yarn hooking portion of the outer brim is arranged with a phase difference rearward in the bobbin rotation direction with respect to the yarn hooking portion of the bobbin side collar. 4. A cradle arm rotatably supported.
And a projection fitted to a bobbin for winding the yarn, and the projection
Forming a collar that stands up from the peripheral surface and supports the bobbin end face
Equipped with a pair of bobbin holders
Of at least one of the bobbin holders
Part notched to have a yarn threading apparatus in the yarn winding device to form a yarn hooking section, toward the standby position or lab Binhoruda side,
At the tip of a thread hook arm rotatable in an imaginary plane substantially parallel to the bobbin rotation axis direction, an outer thread locking portion is protruded at a turning radius position that does not intersect with the bobbin holder. A bobbin-side thread locking portion protrudingly provided at a turning radius position intersecting the bobbin holder on an extension of the turning trajectory.