JPH11200165A - Spinning apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spinning apparatus capable of surely carrying out delivery operation of yarn from a suction duct to a suction nozzle installed in a piecing device and improved in piecing success rate. SOLUTION: In this spinning apparatus having a draft part 1, a spinning part 2, a yarn feeding part and a winding part, a shutter cutter 5c for cutting a yarn Y sucked in a suction duct 6 and blocking suction air flow of the suction duct 6 is installed in a yarn sucking member 5 arranged between the spinning part 2 and the yarn feeding part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spinning apparatus having a drafting section, a spinning section, a yarn feeding section, and a winding section and capable of joining cut yarns.

[0002]

2. Description of the Related Art Conventionally, when a yarn is cut, the yarn is cut at a yarn discharge side of a spinning unit, and the cut yarn is suctioned to a suction duct, which is always installed in a spinning device, and is in a suction state. Then, in the piecing operation, the yarn sucked by the suction duct is cut, and the suction member provided in the piecing device suctions the yarn. 2. Description of the Related Art There is known a spinning device that joins a yarn unwound from a winding unit or a yarn unwound from a separately prepared package (for example, Japanese Patent Publication No. 3-29897).

[0003]

In the conventional spinning apparatus, the suction duct disposed in the spinning apparatus is always in a suction state. The yarn sucked into the duct is affected by the suction airflow of the suction duct,
There is a problem that the suction is not performed by the suction member provided in the piecing device and the piecing fails.

[0004] An object of the present invention is to provide a spinning apparatus in which the problems of the conventional spinning apparatus described above have been solved.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention firstly provides a spinning apparatus having a draft section, a spinning section, a yarn feeding section, and a winding section. A yarn cutter provided between the section and the yarn feed section, and a shutter cutter for cutting the yarn sucked into the suction duct and cutting off the suction airflow of the suction duct. Secondly, the above yarn is a spun yarn generated from a sliver, and even when the spun yarn is cut by a cutter activated by a signal from a yarn break sensor, the drive of the draft unit is not stopped, and Thirdly, the production of spun yarn is continued. Third, the yarn is a core yarn composed of a core fiber and a staple fiber constituting a sliver, and the signal is output from a yarn break sensor. When the core yarn is cut by a cutter that operates, the driving of the draft portion is stopped. Fourth, the cutting operation of the yarn by the shutter cutter is performed a plurality of times. is there.

[0006]

Embodiments of the present invention will be described below, but the present invention is not limited to these embodiments unless it exceeds the gist of the present invention.

First, an embodiment of the present invention will be described using a spinning device for generating a spun yarn from a sliver.

The spinning apparatus includes a draft roller 1 as an example including a back roller 1a, a middle roller 1b having an apron 1b 'and a front roller 1c, a spinning unit 2 including an air injection nozzle, and a constantly rotating delivery. The sliver S drawn by the draft unit 1 is formed into a spun yarn Y by the spinning unit 2 and includes a roller 3a and a yarn feeding member 3 including a nip roller 3b which can be brought into contact with and separated from the delivery roller 3a. , The produced spun yarn Y is in contact with the delivery roller 3a
And is fed out by a nip roller 3b, and then wound up in a package at a winding section (not shown).

Reference numeral 4 denotes a yarn break sensor provided on a slab catcher or the like provided downstream of the yarn feeding section 3.
Reference numeral 5 denotes a yarn suction member disposed between the spinning unit 2 and the yarn feeding unit 3. The yarn suction member 5 includes a suction unit 5 a having a suction port disposed below the traveling path of the spun yarn Y. The suction unit 5a is connected via a pipe 5b to a suction duct 6 which is disposed in the spinning device and is always in a suction state. 5c has a function of cutting the spun yarn Y and a pipe 5b.
A shutter cutter disposed on a pipe 5b that shares the function of opening and closing the pipe. The shutter cutter 5c cuts the spun yarn Y, and at the same time, closes the pipe 5b to shut off the suction airflow of the suction duct 6 and suck the air. In part 5a,
The suction duct 6 is configured so as not to be affected by the suction air flow. 7 is a suction unit 5a or a suction unit 5a
And a cutter disposed between the yarn feeder 3 and the yarn feeder 3. The cutter is configured to cut the spun yarn Y when a yarn breakage signal from the yarn breakage sensor 4 or a spinning abnormality is detected.

Next, the splicing operation of the spinning device having the above-described configuration will be described with reference to FIGS.

When the yarn break sensor 4 detects a yarn break,
Alternatively, when a spinning abnormality is detected, the suction unit 5a or the cutter 7 disposed between the suction unit 5a and the yarn feeding unit 3 operates to cut the spun yarn Y. As shown in FIG. 2, the spun yarn Y cut by the cutter 7 is sucked into the suction part 5a communicating with the suction duct 6 via the pipe 5b when the shutter cutter 5c is open. It is sucked into the suction duct 6. Spun yarn Y
Even if is cut by the cutter 7, the draft unit 1 and the spinning unit 2 are still operating, and the spun spun yarn Y is sucked into the suction duct 6.

Next, a suction nozzle P provided in a piecing device which runs along the machine of the spinning device or a piecing device provided for each spinning unit as shown in FIG. As shown in FIG. 3, the spinning unit 2
At the time when the spun yarn Y sucked by the suction duct 6 is cut off by operating the shutter cutter 5c at the time when it is arranged near the yarn discharge side, the pipe 5b is closed and the suction airflow of the suction duct 6 is reduced. It shuts off so that the suction air flow of the suction duct 6 does not act on the suction section 5a. The spun yarn Y cut by the shutter cutter 5c is sucked by the suction nozzle P provided in the piecing device. At this time, the pipe 5b is closed by the shutter cutter 5c, and the suction duct 5a is connected to the suction duct 5a. 6, the spun yarn Y cut by the shutter cutter 5c is reliably sucked into the suction nozzle P provided in the piecing device. After the spun yarn Y cut by the shutter cutter 5c is sucked by the suction nozzle P provided in the piecing device, the shutter cutter 5c is opened again, and the suction portion 5a and the suction duct are connected via the pipe 5b. 6 is communicated.

Thereafter, the spun yarn Y sucked by the suction nozzle P provided in the piecing device is spun from the winding portion or a separately prepared package in the same manner as in the known piecing operation. It is joined with the spun yarn unwound from. The spun yarn Y that has been spliced is sent in the direction of a winding section (not shown), and is wound into a package.

As described above, the shutter cutter 5c
When the spun yarn Y cut by the suction is sucked by the suction nozzle P arranged in the piecing device, the cut spun yarn Y is not affected by the suction airflow of the suction duct 6. Therefore, the transfer operation of the spun yarn Y from the suction duct 6 to the suction nozzle P disposed in the piecing device does not fail, and therefore, the piecing success rate of the piecing operation Has been improved, and complete automation of piecing has become possible.

Further, by configuring the shutter cutter 5c to perform the cutting operation a plurality of times, even when the spun yarn Y fails to be cut by the first cutting operation, the shutter cutter 5c is operated by the second cutting operation. When opened, the spun yarn Y is pulled by the suction duct 6 and the suction nozzle P arranged in the piecing device,
By the cutting operation again, the spun yarn Y can be surely cut.

Next, another embodiment of the spinning apparatus of the present invention will be described with reference to FIGS.

In this embodiment, the staple fiber constituting the sliver S is combined with the long fiber filament F which becomes the core fiber by joining the long fiber filament F to the sliver S on the upstream side of the front roller 1c of the spinning apparatus described above. The present invention relates to a spinning apparatus for manufacturing a core yarn Yc by winding a core yarn Yc.

As in the above-described embodiment, when the yarn break sensor 4 detects a yarn break, or when a spinning abnormality is detected, the suction unit 5a or the space between the suction unit 5a and the yarn feed unit 3 is detected. The cutter 7 disposed in the core yarn Yc operates.
And the clutch (not shown) is disengaged to stop the back roller 1a. As shown in FIG. 6, the core yarn Yc cut by the cutter 7 is sucked into the suction portion 5a communicating with the suction duct 6 via the pipe 5b when the cutter of the shutter cutter 5c is open. , Are sucked into the suction duct 6. On the other hand, by stopping the back roller 1a,
The sliver S is cut between the stopped back roller 1a and the middle roller 1b continuing to rotate.

Since the spinning unit 2 is still operating, the sliver S and the long fiber filament F on the side of the middle roller 1b cut between the stopped back roller 1a and the middle roller 1b continuing to rotate. The core yarn Yc manufactured by the above is sucked into the suction part 5a and sucked into the suction duct 6. When the sliver S on the side of the middle roller 1b cut between the stopped back roller 1a and the middle roller 1b continuing to rotate is exhausted, the suction duct 6 is always rotating. Only the long fiber filament F supplied by the front roller 1c is sucked.

Next, as shown in FIG. 7, when the suction nozzle P disposed in the piecing device is disposed near the yarn discharge side of the spinning unit 2, the back roller 1a
Is restarted to restart the supply of the sliver S to the spinning unit 2 to generate the core yarn Yc, and the generated core yarn Yc is sucked into the suction unit 5a and sucked into the suction duct 6. When the normal core yarn Yc is discharged from the spinning unit 2, the shutter cutter 5c is operated to cut the core yarn Yc sucked into the suction duct 6, and at the same time, the pipe 5b is closed by the shutter cutter 5c. The suction air flow of the suction duct 6 does not reach the suction section 5a.

The core yarn Yc cut by the shutter cutter 5c is sucked by the suction nozzle P provided in the piecing device. At this time, the pipe 5b is closed by the shutter cutter 5c and the suction air of the suction duct 6 is sucked. Since the flow is cut off and the suction section 5a is not affected by the suction air flow of the suction duct 6, the core yarn Yc cut by the shutter cutter 5c is surely removed.
The suction is performed by the suction nozzle P provided in the piecing device. After the core yarn Yc cut by the shutter cutter 5c is sucked by the suction nozzle P provided in the piecing device, the shutter cutter 5c is opened again, and the suction portion 5a and the suction duct 6 are opened via the pipe 5b. Communication.

Thereafter, the core yarn Yc sucked by the suction nozzle P provided in the piecing device is wound from the core yarn rewound from the winding portion or a separately prepared package in the same manner as in the known piecing operation. Continued with the returned core yarn. The continued core yarn Yc
The sheet is sent in the direction of a winding unit (not shown) and is wound into a package.

As described above, the shutter cutter 5c
When the cut core yarn Yc is sucked by the suction nozzle P provided in the piecing device, the cut core yarn Yc is configured so as not to be affected by the suction airflow of the suction duct 6. Therefore, the delivery operation of the core yarn Yc from the suction duct 6 to the suction nozzle P provided in the piecing device does not fail, and the piecing success rate of the piecing operation is improved.

Further, by configuring the shutter cutter 5c to perform the cutting operation a plurality of times, even if the cutting of the core yarn Yc fails due to the first cutting operation,
At the time of the second cutting operation, the suction action of the suction duct 6 and the suction action of the suction nozzle P provided in the piecing device bring the core yarn Yc into a pulled state, and the cutting operation is performed again to ensure the core yarn Yc. , Core yarn Yc
Can now be cut.

In the embodiment shown in FIGS. 5 and 6, when the yarn break sensor 4 detects a yarn break, or when a spinning abnormality is detected, the core yarn Y is detected.
c, the clutch (not shown) is disengaged, and the back roller 1a is stopped. However, the sliver S is continuously supplied to the spinning unit 2 without stopping the back roller 1a. And the generation of the core yarn Yc can be continued. In this case, the core yarn Yc generated by the spinning unit 2 is always sucked into the suction unit 5a and sucked into the suction duct 6.

[0026]

Since the present invention has the above-described structure, the following effects can be obtained.

When the yarn cut by the shutter cutter is sucked by the suction nozzle provided in the piecing device, the cut yarn is not affected by the suction airflow of the suction duct. With this configuration, the operation of transferring the yarn from the suction duct to the suction nozzle provided in the piecing device is reliably performed, and the piecing success rate is improved.

Since the yarn can be cut by the shutter cutter, the yarn sucked into the suction duct is cut at the beginning of the yarn joining operation, so that the reliable yarn joining can be performed.

By applying the present invention to a spinning device for manufacturing a core yarn, a piecing operation can be performed while suctioning a continuous core fiber into a suction duct, so that a normal core yarn can be generated and piecing can be performed. It became so.

Since the cutting operation of the shutter cutter is performed a plurality of times, the yarn can be surely cut.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a spinning device as an example to which the present invention is applied.

FIG. 2 is a schematic side view of a spinning device similar to FIG.

FIG. 3 is a schematic side view of a spinning device similar to FIG. 1;

FIG. 4 is a schematic side view of a spinning device similar to FIG. 1;

FIG. 5 is a schematic side view of a spinning apparatus according to another embodiment to which the present invention is applied.

FIG. 6 is a schematic side view of a spinning device similar to FIG.

FIG. 7 is a schematic side view of a spinning device similar to FIG. 5;

[Explanation of symbols]

 P: Suction nozzle S: Sliver Y: Spun yarn Yc: Core yarn 1 ····· Draft section 2 ······ Spinning section 3 ······ Thread feed section 4 ······ Thread break sensor 5 ··· ···· Thread suction member 5c ····· Shutter cutter 6 ····· Suction duct

Claims (4)

[Claims] 1. A spinning apparatus having a draft section, a spinning section, a yarn feeding section, and a winding section, wherein a yarn suction member disposed between the spinning section and the yarn feeding section sucks a suction duct. A spinning device, comprising a shutter cutter that cuts off the yarn and cuts off the suction airflow of the suction duct. The yarn is a spun yarn generated from a sliver, and when the spun yarn is cut by a cutter activated by a signal from a yarn break sensor, the driving of the draft portion is not stopped. The spinning device according to claim 1, wherein the production of the spun yarn is continued. The yarn is a core yarn comprising a core fiber and a staple fiber constituting a sliver, and when the core yarn is cut by a cutter operated by a signal from a yarn break sensor, the drive of the draft portion is performed. The spinning device according to claim 1, wherein the spinning device stops. 4. The spinning apparatus according to claim 1, wherein the yarn cutting operation by the shutter cutter is performed a plurality of times.