JPH10167576A - Yarn suctional holding pipe provided on automatic winder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent yarn from striking the side wall of the clamp cover of a clamp so as to injure at being caught by providing the clamp cover on a clamp means, and forming a cutout part on the yarn suction side part of the clamp cover. SOLUTION: A pressing plate 10 is rotationally moved to a block 3 against the elastic force of a spring 6 by a clamp plate 5 together with a clamp cover 9, and hence a clamper is opened. At this time, by a cutout 13 formed on the side wall 9a on the yarn suction side of the clamp cover 9, yarn on the feed bobbin side suckingly held with a yarn suckingly holding means is surely faced to the opening of the clamper, namely, between the extreme end face of the block 3 of a clamp member 2 and the pressing plate 10 of the clamp plate 5, without striking the side wall 9a of the clamp cover 9, and it is sucked into the hole 3a of the lock 3 of the clamper.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic winder which winds a yarn from a yarn supplying bobbin into a package, and sucks and grips the yarn on the yarn supplying bobbin at the time of splicing. The present invention relates to a yarn suction gripping pipe for guiding a yarn joining device arranged between a bobbin and a package.

[0002]

2. Description of the Related Art FIG. 6 is a side view showing the vicinity of a clamp member 2 of a conventional thread suction gripping pipe provided in an automatic winder. In FIG. 6, the clamp member 2 is formed of two parallel side walls 15a and 15b and a bottom wall 15c connected thereto, and a front wall 15d connecting the parallel side walls 15a and 15b and the bottom wall 15c. A clamp cover 15 and a clamper 1 attached to the inside of the clamp cover 15 and connected to one end of a suction pipe.
6 is provided.

[0003] The clamper 16 is fixed to the suction pipe 1 and comprises a fixed portion having a through hole formed in the center portion communicating with the inside of the suction pipe, and a movable portion moving with respect to the fixed portion.

The clamp member 2 is attached to the suction pipe 1 such that the inside of the clamp cover 15 is oriented in the direction of movement when the suction pipe 1 is swiveled to move the clamp member 2 from the standby position to the thread suction gripping position. The clamper 16 is normally closed, but is opened when the clamp member 2 reaches the yarn suction position. When the clamp member 2 reaches the yarn suction position, the yarn on the yarn supplying bobbin side is sucked and gripped from one side wall 15a of the clamp cover 15.

However, according to such a conventional yarn suction and gripping pipe, when the clamper 16 of the clamp member 2 is opened, the opening of the clamper 16 is held by the clamp cover 1.
5 is hidden inside the side wall 15a on the yarn suction side, and there is a possibility that a yarn catch error on the yarn supplying bobbin side may occur. Further, while the clamp member 2 reaches the yarn suction position, the yarn suction side side wall 15a hits the yarn supply side yarn held by the yarn suction holding means (not shown).
The yarn was pinched between 5a and an opener (not shown), which could damage the yarn or cause a catch error. In addition, the inside of the clamp cover 15, especially the bottom wall 15
There was a problem that fly waste was deposited near c.

[0006]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to reliably catch the yarn on the yarn supplying bobbin side during splicing in an automatic winder, and damage the yarn by hitting the side wall of the clamp cover of the clamp at the time of catching. It is another object of the present invention to provide a thread suction gripping pipe provided in an automatic winder which prevents the fly wind from accumulating inside the clamp cover.

[0007]

According to the present invention, there is provided an automatic winder for suction-holding a yarn on a yarn supplying bobbin at the time of piecing and guiding the yarn to a piecing device. A suction pipe, and clamp means attached to one end of the suction pipe for suction-holding the yarn on the yarn supplying bobbin side.The clamp means includes a clamp cover, and is provided on the yarn suction side of the clamp cover. A thread suction gripping pipe characterized by a cutout is formed in the portion.

In the above configuration, preferably, the notch of the clamp cover is formed so as to reach near the bottom wall of the clamp cover, and more preferably, the notch of the clamp cover corresponds to the opening / closing interval of the clamper. It has a triangular shape.

[0009]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 4 shows an example of an automatic winder provided with a thread suction gripping pipe according to one embodiment of the present invention. In FIG. 4, the automatic winder W
Has a side frame F, and a winding unit Wu is attached to the side frame F. The winding unit Wu performs winding from the yarn supplying bobbin B to the package P.

In this case, the yarn Y from the yarn supplying bobbin B passes through a yarn splicing device composed of an air splicer Sp via a guide and tensor device GT and a slab catcher Sc, and is guided by a groove of a winding drum D. Is wound on a package P that is rotated by a winding drum D that is driven to rotate.

Then, for example, a slab catcher Sc
Detects a yarn unevenness such as a slab in the yarn, a cutter provided in the slab catcher Sc operates to cut the yarn Y, the winding operation is stopped, and at the same time, the yarn suction gripping pipe N according to the present invention is used. Is reciprocatingly oscillating and the yarn feeding bobbin B
The suction mouth M reciprocates and swivels the yarn on the package P side to guide the yarn on the package P side to the region of the air splicer Sp. After that, the air splicer Sp
Operates, and the yarn is spliced instantaneously by the compressed air.

As shown in FIG. 4, a thread suction gripping pipe N according to the present invention has a substantially core formed by two parallel pipe sections 1a and 1b and a straight connecting pipe section 1c connecting them. Attached to the end of one side 1a of a parallel pipe portion of the suction pipe 1 having a U-shape,
It comprises a clamp member 2 for sucking and holding the yarn of the yarn supplying bobbin B.

The other side 1b of the parallel pipe portion of the suction pipe 1 is attached to the side frame F of the automatic winder W, and the suction pipe 1 is connected to the other shaft of the parallel pipe portion as shown in FIG. The first position X where the clamp member 2 is arranged at a standby position away from the yarn winding path between the package P and the piecing device Sp.
₁ (position shown in FIG. 4), the second of the two positions of the position X ₂ which is arranged in the yarn suction gripping position on the winding path between the clamping member 2 has the yarn supplying bobbin B and a yarn splicing device Sp Reciprocating swivel movement is possible.

FIG. 1 is an exploded perspective view of a portion near a clamp member of the yarn suction / holding pipe shown in FIG. In FIG. 1, a thread suction gripping pipe according to the present invention comprises a substantially U-shaped suction pipe 1 and a clamp member 2 connected to one end 1a of one of parallel pipe portions of the suction pipe.
It consists of

The clamping member 2 has two parallel side walls 9
a, 9b, a bottom wall 9c connected thereto, a front wall 9d connected to the side walls 9a, 9b and the bottom wall 9c, and a clamp cover 9
And a clamper connected to the tip of one leg 1a of the U-shape of the suction pipe 1a.

The clamper has a fixed portion composed of a block 3 attached to one end 1a of the parallel pipe portion of the suction pipe 1 and a clamp cover 9, and the clamper is attached to both sides of the clamp cover 9 with respect to the block 3. And a movable part comprising a clamp plate 5 rotatably connected about an axis perpendicular to the wall.

The block 3 has a through hole 3a at the center thereof which communicates with the opening at the end of the suction pipe.
This is performed by fitting the end of the suction pipe into the through hole 3 a of the block 3 and tightening the screw 4.

The clamp plate 5 is attached to the tip of the block 3. The clamp plate 5 is formed of a flat plate portion adjacent to the distal end surface 3b of the block 3, and parallel leg portions provided on both sides of the flat plate portion and perpendicular to the flat plate portion, respectively. The distal end of the block 3 is fitted between the legs of the clamp plate, and the pins 7 are arranged to penetrate the legs of the clamp plate 5 and the block 3.
It is connected to the block 3 so as to be rotatable around the axis of the pin 7.

At this time, a groove 3c is formed on the side surface of the block 3 on the mounting portion side of the clamp plate 5, and a spring 6 is fitted into the groove 3c.
It is arranged so that it surrounds. A sponge 8 is adhered to the side surface of the block 3 where the groove 3c is formed.

A hole 5a is formed in the center of the clamp plate 5, and a flange is provided at an opening edge of the hole 5a on the side adjacent to the block 3, so that the opening diameter is smaller. Then, the pressing plate 10 is fitted into this hole. The pressing plate 10 is composed of a first disc-shaped portion fitted into the hole 5a of the clamp plate, and a second disc-shaped portion having a smaller diameter and protruding outward from an opening provided with a flange. .

The pressing plate 10 of the clamp plate 5
In a state where the spring 11 is interposed between the clamp cover 9 and the front wall 9d, the arrangement is such that the side surface of the block 3 to which the sponge 8 is adhered and the inner surface of the bottom wall 9c of the clamp cover face each other (pin 7). Are the side walls 9a, 9 of the clamp cover.
b), the clamp plate 5 is fixed to the front wall 9 of the clamp cover 9 by the screws 12.
d, the clamper composed of the block 3 and the clamp plate 5 is mounted inside the clamp cover 9 to form the clamp member 2. In this case, the second disk-shaped portion of the pressing plate 10 always projects from the surface of the clamp plate 5 facing the block 3 by the elastic force of the spring 11.

FIG. 3 is a plan view of the clamp member 2 of the yarn suction / holding pipe as viewed from the back side of the clamp cover 9.
(A) shows a state in which the clamper is closed, and (B) shows a state in which the clamper is open. Fig. 3
As shown in (A), the clamp plate 5, especially its pressing plate 10, is always in contact with the distal end surface 3b of the block 3 by the elastic force of the spring 6, and the clamper is in a closed state. Then, the clamp plate 5, and thus the pressing plate 10
However, when it is rotated with respect to the block 3 together with the clamp cover 9 against the elastic force of the spring 6, the clamper opens as shown in FIG.

FIG. 2 is a side view of the clamp cover 9 of the clamp member 2 as viewed from the yarn suction side. As shown in FIG. 2, a triangular notch 13 is formed in the side wall 9 a on the thread suction side of the clamp cover 9. Here, the side wall 9a on the yarn suction side is a side wall on the side toward the yarn Y sucked and held by the yarn suction holding means YT when the clamp member 2 approaches the yarn suction position as described later. is there. The notch 13 is formed corresponding to the opening and closing interval of the clamper as can be seen from FIG. In this embodiment,
The notch 13 is formed in a triangular shape corresponding to the opening / closing interval of the clamper. However, the shape of the notch is not limited to this, and may be any shape. However, when the side wall 15a hits the yarn on the yarn supply side. It is preferable that it is not formed,
Further, it is more preferable that the clamp cover is formed so as to reach near the bottom wall of the clamp cover, and it is even more preferable that the clamp cover is formed in a shape corresponding to the opening / closing interval of the clamp as in this embodiment.

Further, in a region adjacent to the front wall 9d of the clamp cover 9 in the side wall 9a on the yarn suction side of the clamp cover 9, a substantially triangular contact portion 14 extending over substantially the entire height of the front wall 9d is provided. , Protruding from the side wall 9a. The contact portion 14 is used for automatically opening the clamper, which will be described later.

As shown in FIG. 4, a thread suction holding means YT is provided above the tensor device GT. When the yarn is cut during winding, the yarn end on the yarn supply side is sucked and held by the yarn suction holding means YT, as shown in FIG.
Referring again to FIG. 5, when the suction pipe 1 pivots from the _first position X ₁ to the second position X ₂ , the clamp member 2 is located inside the clamp cover (on the side wall 9 a having the notch 13). Is attached to the suction pipe so that it faces the direction of movement.

[0026] Then, the clamper is closed at all times, as described above, the suction pipe 1 reaches the second position X _2, thus when the clamping member 2 has reached the yarn suction position, FIG. 4 and FIG. As shown in FIG. 5, the contact member 14 of the clamp cover 9 contacts the opener 18a of the stopper 18 fixed to the frame near the yarn suction position. As a result, together with the clamp cover 9, the clamp plate 5, and thus the pressing plate 10, is rotated with respect to the block 3 against the elastic force of the spring 6, and the clamper is opened.

At this time, the notch 13 formed in the side wall 9a on the yarn suction side of the clamp cover 9 causes the yarn Y on the yarn supplying bobbin side sucked and held by the yarn suction and holding means YT to hit the side wall 9a of the clamp cover 9. The yarn Y on the yarn supplying bobbin side is not opened, and
Between the front end face of the block 3 and the pressing plate 10 of the clamp plate 5.
a. Then, when the suction pipe 1 is pivoting movement in opposite directions toward the second position X ₂ in the first position X _1, the contact member 14 of the clamp cover 9 is separated from the stopper 18, with the clamping cover 9, the clamping plate 5 and the pressing plate 10 are pressed against the block 3 by the elastic force of the spring 6, the clamp is closed, and the thread is
It is gripped between the pressing plate 10 of the clamp plate 5 and the distal end surface 3b of the block 3. Then, the yarn Y on the yarn supplying bobbin side
Is in a state of being suction-held by the yarn suction-holding pipe,
It is guided to the piecing device. In the above, the case where the yarn is cut has been described. However, when the yarn of the yarn supplying bobbin has run out and the yarn supplying bobbin has been replaced with a new yarn supplying bobbin, the yarn suction bobbin is replaced with the yarn supplying bobbin. Is not retained. In this case, the yarn feed bobbin is blown up toward the yarn supplying bobbin to the clamp member 2 when the clamping member 2 is positioned at the X ₂ in FIG. Then, the yarn is sucked into the suction pipe 1 through the clamp member 2. When the notch is provided, the blow-up airflow generated at the time of the above becomes easy to pass, and the fly waste accumulated inside the clamp cover can be removed by the airflow. Further, when the notch is provided, a suction airflow is likely to be generated near the bottom wall 9c of the clamp cover 9, so that fly waste is less likely to accumulate.

As described above, according to the yarn suction / holding pipe of the present invention, at the time of splicing in an automatic winder, the yarn on the yarn supplying bobbin side can be sucked / held reliably and without damage. In addition, according to this thread suction gripping pipe, the notch is provided, so that the bottom wall 9 of the clamp cover 9 is provided.
Air flow becomes easier near c, and fly waste does not collect inside the clamp cover.

[0029]

As described above, according to the present invention,
By providing a notch in the yarn suction side portion of the clamp cover of the yarn suction gripping pipe provided in the automatic winder, errors in catching the yarn on the yarn supplying bobbin side during yarn splicing in the automatic winder are reduced. During the capture, the yarn is prevented from hitting the clamp cover and being damaged. In addition, according to the present invention, fly waste does not collect inside the clamp cover.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a portion near a clamp member of a thread suction gripping pipe provided in an automatic winder according to one embodiment of the present invention.

FIG. 2 is a side view of a clamp cover of the yarn suction gripping pipe of FIG. 1 as viewed from the yarn suction side.

3A and 3B are plan views of the clamp member of the yarn suction and gripping pipe of FIG. 1 as viewed from the back side of the clamp cover, wherein FIG. 3A shows a state in which the clamper is closed, and FIG. It is a thing.

FIG. 4 is a perspective view schematically showing an example of an automatic winder provided with a thread suction gripping pipe according to one embodiment of the present invention.

FIG. 5 is a side view illustrating the turning motion of the yarn suction / holding pipe of FIG. 4;

FIG. 6 is a side view showing the vicinity of a clamp member of a conventional yarn suction / holding pipe provided in a yarn joining device of an automatic winder.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Suction pipe 2 Clamp member 3 Block 3a Through hole 3b Tip surface 3c Groove 4 Screw 5 Clamp plate 5a Hole 6 Spring 7 Pin 8 Sponge 9 Clamp cover 10 Press plate 11 Spring 12 screw 13 Notch 14 Contact part 18 Stopper B Feeding thread Bobbin W Automatic winder P Package Sp piecing device (air splicer) YT Thread suction holding means X ₁ Standby position X ₂ Thread suction gripping position

Claims (3)

[Claims] An automatic winder is provided for sucking and grasping a yarn on a yarn supplying bobbin at the time of piecing and guiding the yarn to a piecing device. A suction pipe and a supply pipe attached to one end of the suction pipe are provided. A clamping means for suction-holding the yarn on the yarn bobbin side, wherein the clamping means has a clamp cover, and a cutout is formed in a portion on the yarn suction side of the clamp cover. Gripping pipe. 2. The thread suction gripping pipe according to claim 1, wherein the notch of the clamp cover is formed so as to reach near a bottom wall of the clamp cover. 3. The thread suction gripping pipe according to claim 1, wherein the notch of the clamp cover has a triangular shape corresponding to an opening and closing interval of the clamper.