JPS6257958A - Yarn delivering of yarn ending machine - Google Patents

Abstract

PURPOSE:To avoid damage of fasciated yarns by rubbing, by lowering a yarn inserting guide while rotating a package in the reverse direction and reducing a tension applied to a yarn connecting from the package to a suction mouth to a sufficiently low state. CONSTITUTION:A package suction mouth 1 is advanced to suck a yarn end thereinto while rotating a package driving roll in the reverse direction at a medium speed, and the yarn end (Y) wound in a package 14 is taken out. The suction mouth 1 is retreated to the back of a yarn inserting guide 2 while rotating the package driving roll in the reverse direction at a higher speed. The yarn inserting guide 2 is lowered to a piecing roll while rotating the package driving roll in the reverse direction so as to correspond to the lowering speed of the yarn inserting guide 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a yarn delivery method for a yarn splicing machine. More specifically, the present invention relates to a spliced yarn delivery method for a device that heats a fiber bundle, such as a bundle spinning device or an oven-end spinning device.

Hereinafter, the present invention will be explained in detail regarding the binding spinning device.

[Conventional technology]

As a yarn splicing method in a binding spinning device that heats fiber bundles using an air heating nozzle, the applicant of the present application reversely feeds the yarn end on the package side through the air heating nozzle and opens between the top and bottom aprons of the draft device. (Japanese Patent Laid-Open Publication No. 59-59925) would like to propose a method in which they are separated and overlapped with the tip of the m-thread bundle between them.

To carry out the yarn splicing method described above, the member carrying the yarn end is moved vertically from the height of the package to the height of the heating device, and at the same time moves laterally away from the position of the package and the heating device. It is necessary to move laterally between positions.

Moreover, what about the spinning machine itself? ! It is necessary to convey the yarn end through the shortest and optimum distance while avoiding rough shapes and protrusions.

The above-mentioned device for transporting the yarn end is a package suction mouse that can move between a position near the package and a position away from the package in the front-rear direction to suction and pull out the yarn end of the package, and the package suction mouse is used to transfer and suction the yarn. delivering the thread to a tube, the thread delivery suction tube receiving the thread and transporting the thread downward to the side of a heating device using an air stream;
Furthermore, the yarn is delivered to a swing arm from a yarn delivery suction pipe located at a lower position on the side of the heating device, the yarn is moved to the upper part of the heating device by the swing arm, and the yarn is sent back to the heating device. There is a cutting thread delivery device (Japanese Unexamined Patent Publication No. 59-69356).

The device disclosed in JP-A No. 59-69356 solves the problem of large and complicated equipment, has a high success rate of thread transfer, and also prevents thread breakage during thread transfer. The aim is to provide a yarn transfer device for a yarn splicing machine that does not generate yarn, and receives the yarn from a package suction mouth that sucks and pulls out the yarn end of the package, and sends the yarn back to a device that heats it using an air flow. In a yarn transfer device of a yarn splicing machine, a first beathing arm is rotatably supported on the yarn splicing machine, and a rear end portion of the second beathing arm is rotatably supported at the tip of the first beathing arm. a second beathing arm that supports a beathing unit that receives yarn from the package suction mouth and is pivotable about an axis of the second beathing arm;
We have proposed a yarn transfer device for a yarn splicing machine supported at the tip of a beasing arm (Japanese Patent Application No. 59-255336).

In this proposed device, the yarn end of the package is suctioned by the suction bow r mouth, the suction mouth is moved back to pull out the yarn end from the package, the yarn insertion guide is lowered, and the yarn connected from the package to the suction mouth is transferred to the beading unit. Receive it at
Cut the end of the thread and transfer the thread.

(Problem to be solved by the invention) However, it is not possible to simply lower the thread insertion guide and push down the thread connected from the package to the suction mouth. As a result, the outer bundled yarns of bundled spun yarns tend to be easily handled, resulting in lower yarn quality especially in the case of weak yarns and, in some cases, problems such as yarn breakage.

[Means for solving problems]

In the present invention, the above problem can be solved by sucking the yarn end of the package using a suction mouth, pulling the suction mouse back to pull out the yarn end from the package, and lowering the yarn insertion guide while reversing the package. This is achieved by a yarn transfer method of a yarn splicing machine in which the reversal of the package is stopped before reaching the descending end, tension is applied to the yarn, the yarn connected from the package to the suction mouth is received by a beathing unit, and the yarn end is cut.

[Effect]

In the present invention, by lowering the yarn insertion guide while reversing the package, the tension acting on the yarn connected from the package to the suction mouth is kept sufficiently low, so that when the yarn insertion guide is lowered, the guide allows binding and spinning. Even if the surface of the thread is rubbed, the thread will not become weak. Furthermore, the reversal of the package is stopped just before the thread insertion guide has descended to the lower end, and on the other hand, since the thread insertion guide is further lowered, the necessary tension is applied to the thread when cutting the thread, and the thread is pressed against the cutter roller. The threads are definitely cut. Moreover, since the thread is only rubbed against the thread insertion guide for a short period of time while this uncut tension is applied, weakening of the thread is substantially prevented.

〔Example〕

The present invention will now be described in detail with reference to the drawings, which illustrate preferred embodiments of the invention.

FIG. 1 is a side view showing a yarn transfer device of a yarn splicing machine according to the present invention, with a part of the drive system omitted. The draft device of a spinning machine for carrying out the method of the present invention includes a pair of back rollers 31, 31' and a middle apron 32, respectively.
．． 32', and front rollers 33 and 33'. An air heating nozzle 8 is provided downstream of the Freon 1-roller 33, 33'.

The front top roller 33' of the draft device is configured to be able to press against and separate from the front bottom roller 33 by a known pressure means.

The air heating nozzle 8 is movable in a direction perpendicular to the plane of the paper of FIG. 1, and can assume a steady operating position and a splicing position.

The yarn splicing machine can run in front of the spindle by a conventionally known drive device (not shown), and when a yarn breakage occurs, it moves in front of the yarn cutting weight and stops to perform the yarn splicing operation.

The yarn splicing machine is provided with a package suction mouth 1 movable between a position away from the package 14 and a position near the package 14 by a moving member (not shown). The package suction mouse 1 sucks the thread end of the package 14 and pulls it out to a predetermined position away from the package 14.

Furthermore, in the yarn splicing machine, the yarn insertion guide 2 is connected to an air cylinder (
(not shown), and the end of the thread pulled out by the package suction mouth 1 can be moved as described below.
It is inserted between a pair of bearing rows 53 located at the original position.

The yarn splicing machine rotatably supports a first beathing arm 4 via a first arm pivot shaft 21, and a second arm pivot shaft 22 is attached to the tip of the first beathing arm 4. The rear end portion of the second brace arm 5 is rotatably supported through it.

A beathing unit 15 is supported at the distal end of the second beathing arm 5 via a beathing unit rotation actuator 18 so as to be rotatable around the axis of the second beathing arm 5 .

The beading unit 15 includes a pair of beading rollers 3.
, a yarn presence/absence detection sensor 11 is attached, and the beading roller 3 can be rotated by a beading roller drive motor 24.

The second beathing arm 5 rotatably supports a yarn end passage tube 6 through which the yarn is passed through the air heating nozzle 8 via a reverse passage tube support shaft 28.

The first brace arm 4 is connected to an arm drive motor (not shown) via a first arm pivot shaft 21 and an arm drive deceleration IN (not shown). By rotating the arm driving motor, the first brace arm 4
can be rotated relative to the splicing machine.

Second arm pivot shaft 2 with second brace arm 5 attached
A pulley 25 is attached to 2, and a second arm driving belt 17 is stretched between the pulley 25 and the pulley 27. The pulley 27 is coaxial with and opposite to the first arm pivot shaft 21 .

The arm is rotatably installed and connected to an arm drive motor (not shown). By rotating the arm drive motor, the second bearing arm 5 can be rotated at the tip of the first bearing arm 4.

In FIG. 7, a pulley 29 is integrally attached to the reverse threading tube support shaft 28, a pulley 41 is rotatably supported on the second arm rotation shaft 22, and a thread end path is passed between the pulley 29 and the pulley 41. A pipe layer movement belt 19a is stretched. The pulley 4
A pulley 42 is attached integrally with the first arm pivot shaft 2.
1 rotatably supports a pulley 43, and a yarn end passage tube layer movement belt 19b is stretched between the pulley 42 and the pulley 43. Rotary actuator for layered movement of yarn end passage tube 7
A pulley 44 is attached to the output shaft of the pulley 43.44.
A belt 19c for moving the yarn end passage tube layer is stretched between them.

The first and second piecing arms 4.5 are configured to be movable together with the piecing units 1 to 15 in a direction perpendicular to the paper plane of FIG.

During steady operation, the *ii bundle (fleece) F is drafted to a predetermined magnification by a drafting device consisting of a back roller 31.31', a middle apron 32.32', and a front row 533.33' to form a ribbon-shaped! The fiber bundle F is heated and untwisted by an air heating nozzle 8 to produce a bundled spun yarn Y, and the fiber bundle F is heated and untwisted by an air heating nozzle 8 to produce a bound spun yarn Y.
, through a winding drum 40, and then wound as a package 14 onto a bobbin supported on a cradle arm (not shown).

Hereinafter, the operation of the apparatus of the present invention will be explained with reference to FIGS. 1 to 9. In addition, drive systems such as pulleys and belts are omitted as appropriate in the drawings. When the spun yarn Y is cut during spinning,
The cradle arm supporting the package 14 is pushed up by a push-up mechanism (not shown), and the package 14 is separated from the winding drum 40. On the other hand, the back roller 31.31' of the draft mechanism is immediately stopped, the other rollers continue to rotate, and the fiber bundle F is transferred to the back roller 31.31'.
and middle apron 32.32' Cut with a bar (first
figure).

Next, as shown in FIG. 2, the package suction mouth 1 is moved forward, and the package drive roller mounted on the yarn splicing machine is controlled by a servo motor (not shown) and reversed at a medium speed while the package suction mouth 1 sucks the package. Well, package 1
By applying the suction force of the suction mouse 1 to the entire surface of the package 14, the yarn end Y wound around the package 14 is pulled out.
Stop the reverse rotation of the package 14.

Next, the package drive roller is controlled by a servo motor and reversed at a higher speed than the above-mentioned reversal speed, so that the package suction mouse 1 is removed while preventing improper tension from being applied to the drawn-out thread.
3), and stop the reverse rotation of the package 14.

In order to match the descending speed of the thread insertion guide, the package drive roller is controlled by a servo motor and slowly reversed, while the thread insertion guide 2 is lowered toward the beathing roller 3 by the cylinder for operating the thread insertion guide. The tension acting on the yarn between the suction mouth and the package is not too high to prevent the surface of the binding spun M system from being rubbed by the yarn insertion guide 2 and weakening the yarn under the action of a large tension. At the same time, bring the thread Y closer to the beading roller 3.

A reed switch (not shown) for detecting the backward end of the cylinder for operating the thread insertion guide is installed slightly before the true backward end, and the reed switch stops the reverse rotation of the package drive motor. . As a result, just before the thread insertion guide 2 reaches the lower end, the package 14
The reversal of is stopped. On the other hand, since the thread insertion guide 2 further descends, the tension required to cut the thread acts on the thread, and in this state the thread is gripped by the beading roller 3.

At this time, the yarn presence/absence detection sensor 11 detects whether or not the suction operation of the yarn end of the package is successful. If it is successful, the yarn is cut with an appropriate tension being applied to the uncut part as shown in (e) above. The thread is cut at the tip of the beesing roller 3 using a power cutter 〇-59 (Fig. 4).

Next, the arm drive motor is driven to rotate the first beathing arm 4 clockwise, and the second beathing arm pivotally supported by the second arm pivot shaft 22 at the tip of the first beathing arm 4 is rotated clockwise. 5 toward the main body of the spinning machine, and lower the beathing unit 15 to the vicinity of the heating nozzle 8.

At this position, the beesing unit rotation actuator 1
8 by 180 degrees, the directions of the beading roller 3 and the yarn presence detection sensor 11 are reversed (FIG. 5), and the yarn end Y held by the beading roller 3 is positioned at the air heating nozzle 8fil.

The second brace arm 5 is further lowered, and then the first brace arm 4 is slightly raised as shown in FIG. 6, and at the same time the second brace arm 5 is rotated slightly clockwise. Then, the piecing roller 3 is positioned directly downstream (directly above) the final outlet of the air heating nozzle 8.

Next, the air heating nozzle 8 is installed together with the beesing roller 3.
is moved in the direction of the fl line of the front row 533, 33' (direction perpendicular to the plane of the paper in FIG. 6) to a position away from the yarn path during steady operation. Therefore, below the air heating nozzle 8,
In other words, a space is created on the entrance side.

Therefore, the yarn end passage tube actuator 7 is actuated to raise the tip of the yarn end passage tube 6 through this space.
As shown in the figure, approach the inlet side of the air heating nozzle 8,
A suction force is applied to the thread end passage tube 6. First, the beesing roller 3 installed above the air heating nozzle 8 is reversed, and the yarn end is advanced through the air heating nozzle 8. Thereby, the end of the thread formed on the package 14 can be smoothly led out from the final outlet of the air heating nozzle 8 toward the inlet of the air heating nozzle 8.

After introducing the yarn end to the inlet of the air heating nozzle 8, the yarn end passage tube actuator 7 is operated in the opposite direction to that described above, and the yarn end passage tube 6 is lowered and heated as shown in FIG. Retract from the nozzle 8 and return the air heating nozzle 8 to its normal operating position.

In this state, a back roller rotation start signal is sent, and first the clutch of back roller 1.1 is engaged to start rotation.
The fiber bundle F is advanced into the active area of the middle apron 32.32' and further reaches the front opening 33.33'.

Before the fiber bundle F reaches the front rollers 33, 33', first, the beading roller 3 is released, the package 14 is rotated in the forward direction, and the yarn end in the yarn end passage tube 6 is advanced through the air heating nozzle 8. Start letting them do it.

At the same time or a little later, the front top roller 3
3' is lowered by operating the lever 3', the front top roller 33' is pressed by the front bottom roller 33, the yarn end is gripped by the front roller, and the middle apron 3
2. Mix with fleece F sent from the 32' direction.

Furthermore, at the same time or with a slight delay, air is injected into the air heating nozzle 8 to generate a swirling flow, and the front roller 33.
At the 33' section, a seam is formed between the yarn ends of the overlapped seed yarns and the fiber bundle F, and they are spliced.

Thereafter, as shown in FIG. 9, the states shown in FIGS. 6, 5, and 4 are returned to the state shown in FIG. 1.

〔Effect of the invention〕

In the present invention, by lowering the yarn insertion guide while reversing the package, the tension acting on the yarn connected from the package to the suction mouth is kept sufficiently low, so that when the yarn insertion guide is lowered, the guide allows binding and spinning. Even if the surface of the thread is rubbed, the thread will not become weak. Furthermore, the reversal of the package is stopped just before the thread insertion guide reaches the lower end, and as the thread insertion guide further descends, the tension required to cut the thread is applied to the thread, pushing it against the cutter roller. The threads are definitely cut. Moreover, since the thread is only rubbed against the thread insertion guide for a short time under this uncut tension, weakening of the thread is substantially prevented.

[Brief explanation of the drawing]

1 to 9 are side views of an apparatus implementing the present invention. 1... Suction mouse, 2... Thread insertion guide, 3...
...Beasing roller, 4゛...First beesing arm, 5...Second beesing arm, 8...Air heating nozzle, 14...Package.

Claims (1)

[Claims] 1. Suction the yarn end of the package with the suction mouth, move the suction mouse backward to pull out the yarn end from the package, and lower the yarn insertion guide while reversing the package. A method for transferring yarn for a yarn splicing machine, characterized in that the reverse rotation is stopped, tension is applied to the yarn, the yarn connected from the package to the suction mouth is received by a piecing unit, and the yarn end is cut.