JP2001040535A - Spinning apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spinning apparatus having solved such problems that, conventionally, a ring spinning machine can produce a yarn having excellent tenacity, feeling, or the like, but causes a high manufacturing cost and a low productivity due to an extremely lower production rate of yarn than those of innovation spinning machines, on the other hand, the innovation spinning machines such as an open end spinning machine, an air type spinning machine, and the like, can produce a yarn at a high speed but has a subject that has a use range of yarn limited to a specific region in comparison with a ring yarn and a ring spinning machine can not measure the tension of a yarn in the middle of spinning. SOLUTION: This spinning apparatus is equipped with a tension sensor 15 for detecting the tension of a yarn Y between a draft mechanism 101 for carrying out a draft processing and a bobbin 6. The tension sensor 15 is constituted of a heat part 52 with which the yarn Y is brought into contact under pressure and a detection body 51 for detecting the tension. A bending angle α of the yarn Y to be brought into contact with the head part 52 at the head part 52 is 130 deg. to 170 deg..

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spinning apparatus for drafting a sliver, twisting a yarn formed by the drafting process, and winding the yarn around a rotatably driven bobbin. The present invention relates to a spinning device configured to measure the tension of a yarn during spinning.

[0002]

2. Description of the Related Art At present, a ring spinning machine is most frequently used as a spinning device in the world, and can produce a yarn having excellent strength, texture and the like from a real twisted yarn. The production speed of the yarn of this ring spinning machine is about several tens m / min (generally 20 m to 30 m / min). on the other hand,
As spinning devices, there are innovative spinning machines such as open-end spinning machines and pneumatic spinning machines, and the yarn production speed of these spinning devices is several hundred m / min (for example, 400 m / min). Further, the yarn produced by the innovative spinning machine is a bound spun yarn, and has a slightly different feel, appearance, and the like from the ring yarn produced by the above-described ring spinning machine.

[0003]

As described above, a ring spinning machine can produce a yarn excellent in strength and texture, but the production speed of the yarn is higher than that of other innovative spinning machines. Since it is extremely slow, there is a problem that productivity is low and production cost increases. On the other hand, the innovative spinning machine can produce yarn at high speed, but since the texture and appearance are slightly different from those of the ring yarn, the use range of the yarn is limited to a specific range as compared with the ring yarn. Problem. Conventionally, it has been impossible to measure the tension of a yarn during spinning in a ring spinning machine. Therefore, the present invention can produce a yarn having characteristics similar to or very similar to a ring yarn, and can reduce the tension of a yarn during spinning in a spinning machine capable of producing yarn at a higher speed than a ring spinning machine. It is possible to measure.

[0004]

The present invention uses the following means to solve the above problems.
That is, in the spinning device according to claim 1, a twist is given to the fiber bundle stretched by the draft mechanism by the rotation of a bobbin that winds the yarn, and a spun yarn is formed. A tension detecting means for detecting the tension of the strip is provided.

According to a second aspect of the present invention, in the spinning device, the yarn is twisted by a funnel which is covered over a bobbin and is rotatably supported. I let it.

According to a third aspect of the present invention, the tension detecting means includes a head portion against which the yarn is pressed and a detecting main body for detecting the tension.

According to a fourth aspect of the present invention, the bending angle of the thread pressed against the head portion at the head portion is 13 degrees.
0 ° to 170 °.

[0008]

Embodiments of the present invention will be described with reference to the accompanying drawings. 1 is a side view showing a spinning apparatus of the present invention, FIG. 2 is a side view showing a bobbin and a funnel, FIG. 3 is a view showing a bending angle of a yarn at a pressure contact portion of a tension sensor, and FIG. 4 is a front view showing a tension sensor. FIG. 5 and FIG. 5 are side views.

The configuration of the spinning apparatus of the present invention will be described. The spinning device shown in FIGS. 1 and 2 processes the sliver S into a yarn Y by a draft mechanism 101 and twists the yarn Y by a twisting mechanism 102, and then applies the yarn Y to a bobbin 6.
Is to be wound up. The draft mechanism 101 is configured by arranging a pair of back rollers 2, a middle roller 3 having an apron 3a, and a front roller 4 in this order from the sliver S side.
While passing through 3.4, the sliver S is stretched to a predetermined thickness to form a yarn Y.

In the twisting mechanism 102, a funnel 5 having an open lower end is rotatably supported by a funnel supporting portion 21, and the funnel 5 covers the bobbin 6 from above. The funnel 5 includes a main body 5a.
A shaft portion 5b extending upward from the shaft is rotatably supported by a funnel supporting portion 21 via bearings 22 and 22 and is rotatably driven by a funnel driving motor 23 formed in the funnel supporting portion 21. It is configured.

The funnel drive motor 23 includes a shaft 5b.
And the funnel support 2
And a stator coil 24 fixed to the first casing 21a and arranged to face the rotor magnet 25.

On the other hand, the bobbin 6 is configured to be rotatable integrally with a spindle 7, and the spindle 7 has a bearing 9.
9 and is rotatably supported by the spindle support portion 8. The spindle 7 is rotatably driven by a spindle drive motor 10 provided in the spindle support section 8.
0 is a rotor magnet 12 fixed to the spindle 7
Is fixed to the casing 8a of the spindle support portion 8,
And a stator coil 11 arranged to face the rotor magnet 12.

The spindle 7 and the shaft 5b of the funnel 5 are coaxially arranged. The spindle 7 and the funnel 5 can be driven coaxially by a funnel drive motor 23 and a spindle drive motor 10, respectively. It is configured. Also, the shaft portion 5b of the funnel 5
Is formed with a hole 5c in the axial direction.
The upper end surface of the main body 5b communicates with an opening 5d that is open on the outer periphery of the upper end of the main body 5a.

The yarn Y processed by the draft mechanism 101 passes through the hole 5c formed in the funnel 5 from the upper end, and is wound around the outer periphery of the main body 5a from the opening 5d. Has been wound up. A tension sensor 15 as tension detecting means is provided between the draft mechanism 101 and the twisting mechanism 102 to detect the tension of the yarn Y during spinning. It is configured to be able to move up and down.

In the spinning apparatus thus constructed, the bobbin 6 which rotates integrally with the spindle 7 is driven to rotate by the spindle drive motor 10 and the funnel 5 is driven to rotate by the funnel drive motor 23, so that the yarn The yarn Y is wound around the bobbin 6 while adding a twist to the yarn Y. When the yarn Y is wound around the bobbin 6, the bobbin 6 is moved up and down with respect to the funnel 5, so that the yarn Y is wound around the bobbin 6 in an orderly manner.

The drive rotation speeds of the funnel drive motor 23 and the spindle drive motor 10 are individually controlled by a controller 14 to which the funnel drive motor 23 and the spindle drive motor 10 are connected. The drive motor 23 and the spindle drive motor 10 are controlled so that the funnel 5 and the bobbin 6 rotate synchronously.

As described above, both the bobbin 6 and the funnel 5 are driven to rotate, and the number of rotations thereof is controlled to rotate the bobbin 6 and the funnel 5 synchronously. Even when the yarn Y is rotated at a high speed, the tension of the yarn Y between the bobbin 6 and the funnel 5 is prevented from becoming excessively large, thereby preventing the occurrence of yarn breakage. It is possible to process with. A funnel 5 covering the bobbin 6
After twisting is applied to the yarn Y by the twisting mechanism 102 configured by winding the yarn Y around the yarn Y, the yarn Y is wound around the bobbin 6, thereby forming a ring yarn produced by a ring spinning machine. It is possible to produce a yarn Y having the same strength and texture.

Further, the bobbin 6 and the funnel 5 are independently driven to rotate by the spindle drive motor 10 and the funnel drive motor 23 which are separately provided, and the rotation speed of the bobbin 6 and the rotation speed of the funnel 5 during the steady operation are controlled. Are individually controlled so that the difference between the two rotational speeds can be set arbitrarily. Thereby, the state of twist given to the yarn Y is changed, so that the yarn Y having various textures can be produced.

Next, the tension sensor 15 will be described. As shown in FIG.
Is disposed between the front roller 4 of the draft mechanism 101 and the funnel 5 of the bobbin 6 disposed on the draft mechanism 101 side. The tension sensor 15 is in pressure contact with the yarn Y, and the yarn Y is bent at a bending angle α at a pressure contact portion of the tension sensor 15.

As shown in FIGS. 3 and 4, the tension sensor 15 includes a head portion 52 made of ceramics or the like, against which the yarn Y is pressed, a detection main body 51 for detecting tension, and the detection main body 51 and the head portion 52. Rod 53 connecting
It consists of. A sliding contact groove 52a is formed on the outer periphery of the head portion 52, and the thread Y is slidably pressed against the sliding contact groove 52a. When the yarn Y is pressed against the head 52, a force is applied to the head 52 in the direction in which the yarn Y is pressed (downward in FIGS. 4 and 5), and this force is transmitted to the detection main body 51 through the rod 53. Then, detection is performed by a detection tool such as a strain gauge built in the detection main body 51. The tension applied to the thread Y is detected by the detection main body 51 detecting the force applied to the head portion 52 by the pressure contact of the thread Y. Further, the tension sensor 15 is composed of a detection main body 51 and a head portion 52, and the yarn Y is slidably pressed against the head portion 52 so that
It is possible to accurately detect the tension of the yarn Y without hindering the transmission of the twist given to the yarn Y.

If the bending angle α of the yarn Y is too large, the pressing force of the yarn Y against the head portion 52 becomes weak and insufficient, and the tension of the yarn Y is accurately detected. When the bending angle α is too small, the pressing force of the yarn Y against the head portion 52 becomes too large, and the twist given by the twisting mechanism 102 is more draft than that of the head portion 52. It is not transmitted to the yarn Y on the mechanism 101 side.

Therefore, in the present embodiment, the tension sensor 15 is disposed between the draft mechanism 101 and the funnel 5, and the bending angle α of the yarn Y is changed from 130 ° to 170 °.
And the twist is transmitted to the yarn Y on the draft mechanism 101 side, and the tension of the yarn Y can be accurately detected.

As described above, by detecting and measuring the tension of the yarn Y during spinning, that is, the spinning tension while spinning at a high speed, the spinning tension and the produced yarn can be measured. It is possible to know the relationship between Y and the physical properties. Further, if the tension sensor 15 is configured to always detect the tension of the yarn Y and to detect the number of rotations of the funnel 5 and the bobbin 6 (or the spindle 7), the detected value of the tension is converted to the funnel 5 and the bobbin 6 (or Spindle 7)
To control the number of rotations of the funnel 5 and the bobbin 6 (or the spindle 7) in accordance with the tension of the yarn Y to maintain the quality of the produced yarn Y constant, You can do a check.
In addition, the tension sensor 15 in the spinning device of the present invention is used.
Can be applied not only to the funnel spinning device shown in the above-described example, but also to a ring spinning machine. In this case, the twist is transmitted to the yarn Y on the draft mechanism side without causing yarn breakage. Then, the tension of the yarn Y can be accurately detected.

[0024]

According to the present invention, the spinning apparatus having the above-described structure has the following effects. First, as in claim 1, in a spinning apparatus for forming a spun yarn by twisting a fiber bundle stretched by a draft mechanism by rotating a bobbin for winding the yarn, forming a yarn between the draft mechanism and the bobbin. Since the tension detecting means for detecting the tension of the yarn is provided, it is possible to detect and measure the tension of the yarn during spinning, that is, the spinning tension, without obstructing the transmission of the twist given by the twisting mechanism. . This makes it possible to know the relationship between the measured spinning tension and the physical properties of the produced yarn. Further, when the tension detecting means is configured to always detect the tension of the yarn and to detect the number of rotations of the funnel and the bobbin (or the spindle that is the rotating shaft of the bobbin) constituting the twisting mechanism, the detected value of the tension is Is fed back to the number of revolutions of the funnel and the bobbin (or the spindle), and the number of revolutions of the funnel and the bobbin (or the spindle) is controlled according to the tension of the yarn to keep the quality of the produced yarn constant. Or check the quality.

Further, the spinning device is configured to twist the yarn by a funnel that is rotatably supported by covering the bobbin, and the spinning device is driven to rotate and the synchronous rotation with the bobbin is performed. Since the spinning is performed at high speed, the yarn tension during spinning, that is, the spinning tension, is measured by detecting the yarn tension during spinning without causing yarn breakage and preventing the transmission of the twist given by the twisting mechanism. It becomes possible.

Further, since the tension detecting means is constituted by a head portion to which the yarn is pressed and a detection main body for detecting the tension, the transmission of the twist given to the yarn is prevented. Without this, it is possible to accurately detect the tension of the yarn.

Furthermore, the bending angle of the thread pressed against the head portion at the head portion is 130 °.
Since it is up to 170 °, it is possible to accurately detect the tension of the yarn while reliably transmitting the twist added by the twisting mechanism to the yarn on the draft mechanism side with respect to the tension detecting means.

[Brief description of the drawings]

FIG. 1 is a side view showing a spinning device of the present invention.

FIG. 2 is a side view showing a bobbin and a funnel.

FIG. 3 is a diagram showing a bending angle of a yarn at a pressure contact portion of a tension sensor.

FIG. 4 is a front view showing a tension sensor.

FIG. 5 is a side view of the same.

[Explanation of symbols]

 S Sliver Y Yarn α (of yarn) bending angle 101 Draft mechanism 102 Twisting mechanism 4 Front roller 5 Funnel 5b Shaft section 6 Bobbin 7 Spindle 15 Tension sensor 51 Detecting body 52 Head section 53 Rod

Claims (4)

[Claims] 1. A spinning apparatus for forming a spun yarn by twisting a fiber bundle stretched by a draft mechanism by rotating a bobbin for winding the yarn, thereby forming a yarn tension between the draft mechanism and the bobbin. A spinning device provided with tension detecting means for detecting the tension. 2. The spinning apparatus according to claim 1, wherein the spinning device twists the yarn with a funnel that is rotatably supported over the bobbin, and the funnel is driven to rotate and is rotated synchronously with the bobbin. The spinning device according to claim 1, wherein 3. The spinning apparatus according to claim 1, wherein the tension detecting means includes a head portion against which the yarn is pressed, and a detecting main body for detecting the tension. 4. The spinning apparatus according to claim 3, wherein a bending angle of the yarn pressed against the head portion at the head portion is 130 ° to 170 °.