JPH0849123A - Rotor type open end spinning frame - Google Patents

Abstract

PURPOSE:To enable the production of yarns capable of twisting fibers constituting a fiber bundle taken out in a relatively straight extended state therein while being twisted and improving the touch feeling when formed into a fabric even in high-speed rotation. CONSTITUTION:This open end spinning frame is obtained by installing an inner rotor 11, positively driven independently of the an outer rotor 6, partially opposite to the vicinity of a fiber bundling part 6a of the outer rotor 6 therein and partially having a shape corresponding to the end of a yarn takeout passage on the coaxial line as that of the outer rotor 6, arranging a yarn passage 30 for guiding the fiber bundle from the vicinity of the fiber bundling part 6a to a position opposite to the yarn takeout passage in the inner rotor 11 and further installing the second guide 33 between the first guide 31 and the inner wall surface of the outer rotor 6 on the side of the rotational direction of the inner rotor 11 from the first guide 31 in the inner rotor 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer rotor having a fiber concentrating portion for concentrating fibers supplied in an opened state, which is positively driven independently of the outer rotor and partially has a yarn drawing passage. The present invention relates to a rotor type open-end spinning machine provided with an inner rotor corresponding to the end of the rotor.

[0002]

2. Description of the Related Art Generally, in a rotor-type open-end spinning machine, a supply sliver is opened by a combing roller to separate impurities, and the fibers that have been opened are separated based on a negative pressure in a rotor that rotates at a high speed. It is transported into the rotor by the air flow generated in the transport channel. Then, the fibers transported into the rotor are converged in a fiber converging portion (fiber converging groove) which is the maximum inner diameter portion of the rotor, and are added by the action of the pulling roller from a guide hole (thread pulling passage) provided at the center of the navel. It is pulled out while being twisted, and wound on a bobbin as a package. That is, in the rotor open-end spinning machine, when the fiber bundle focused on the fiber focusing portion is stripped from the fiber focusing portion and drawn out along the wall surface of the guide hole formed at the center of the navel, Due to the friction with the wall surface, the fiber bundle is pulled out while rotating along the inner wall surface of the guide hole as the rotor rotates, and the fiber bundle is twisted.

The open-end spinning frame has better productivity than the ring spinning frame. However, in general, yarn produced by an open-end spinning machine (hereinafter referred to as open-end yarn)
Has a drawback in that the texture of a cloth is inferior to that of a thread produced by a ring spinning machine (hereinafter referred to as a ring thread). Further, there is a problem in that fibers that have jumped into the twisted region become fibers that are wound around the yarn that is being formed, and that the appearance of the yarn also becomes defective. Further, the open-end yarn has a problem that the yarn strength is inferior to that of the ring yarn.

The inventor of the present application considered that the reason for the poor texture when formed into a cloth was the difference in the structure between the ring yarn and the open end yarn. That is, the conventional open-end yarn has a shape in which a ribbon (tape) is twisted, and irregularities are conspicuously shown on the outer peripheral portion. On the other hand, the ring yarn has almost no unevenness on the outer peripheral portion. The reason for this is that in the conventional open-end spinning machine, as shown in FIG.
It is considered that the fiber bundle F drawn from the guide toward the guide hole (not shown) is drawn from the stripping point P substantially perpendicular to the inner wall surface of the rotor. Peeling point P
Since the angle between the fiber bundle F (yarn Y) and the inner wall surface of the rotor (twisting angle with respect to the fiber bundle F) is about 90 °, the fiber bundle F is bent at about 90 °, and the fiber bundle F is outside the bent portion. The fibers are always pulled, and the inner fibers are slackened. Then, since twisting is applied in that state, the yarn becomes a state in which fibers with low tension are wrapped around the fibers with high tension located in the center, and as a result, the yarn becomes wavy and irregularities are remarkable on the outer peripheral part. appear.

As a device for eliminating the drawbacks of conventional open-end yarns, a rotor (outer rotor) having a fiber concentrating portion has an extraction hole for withdrawing the fiber bundle converging in the fiber concentrating portion and the rotor. On the other hand, a device provided with a draft rotor (inner rotor) for performing differential rotation has been proposed (Japanese Patent Laid-Open No. 64034/51). This device, as shown in FIG.
An inner rotor 74 is concentrically provided on the inner side of 3. Then, the inner rotor 74 is replaced by the outer rotor 73.
The fiber bundle F is rotated a little faster, and the fiber bundle F is drawn out through the draw-out hole 75 formed in the inner rotor 74 to spin the fiber bundle F while giving a draft. Further, in the above publication, as shown in FIG. 10 (a), a small disk 76 is attached to the inner rotor 74, which is revolved and rotates while being crimped to the fiber bundle F converged in the fiber converging portion, and the fiber bundle F is An apparatus for spinning while drafting while suppressing floating is disclosed.

[0006]

In the device shown in FIG. 9,
The rotation speed of both rotors 73 and 74 is, for example, 30,000 rp
When it is relatively low, such as m, the fiber bundle F stripped from the fiber bundle portion can be spun in a gentle curve from the stripping point P to the extraction hole 75, as shown by the solid line in FIG. However, when the rotation speed of the rotor became as high as about 90,000 rpm, the centrifugal force increased, and as shown by the chain line, the fiber bundle F extending from the fiber focusing portion to the extraction hole 75 extended straight to the vicinity of the fiber focusing portion. It becomes a state.
As a result, the twisting angle becomes approximately 90 °, and the above-mentioned problems similar to those of the conventional open-end spinning frame without the inner rotor 74 occur.

Further, in the case of the apparatus shown in FIG. 10 (a) equipped with the small disk 76, when the rotation speed of the rotor becomes high, the drawing speed (winding speed) is increased to increase the draft ratio. For example, as shown in FIG.
It is possible to set the stripping point P immediately downstream of the position where the fiber bundle F presses the fiber bundle portion. However, if the draft ratio is increased, as shown in FIG. 10B, the contact pressure between the fiber bundle F and the point D at the end of the drawing hole 75 increases, and the twist becomes D.
The fibers in the fiber converging portion cannot be pulled out because they are hardly transmitted upstream from the point. Further, when the twist is increased and the twist is transmitted to the stripping point P, a bridge fiber Fb is generated between the entrance of the drawing hole 75 and the point P to become a so-called neck-wound fiber wound around the fiber bundle F in a coil shape. , The appearance of the thread becomes poor and the texture of the cloth becomes poor.

If the contact pressure between the small disc 76 and the outer rotor 73 is large, the inner rotor 74 will move to the outer rotor 7.
3 is rotated, and it is difficult to rotate the inner rotor 74 and the outer rotor 73 at a predetermined speed difference. Further, since the small disc 76 rotates while coming into contact with the outer rotor 73, there is a problem that the small disc 76 or the outer rotor 73 is easily worn.

The present invention has been made in view of the above problems, and an object thereof is to twist fibers into a yarn in a state where fibers constituting a fiber bundle to be drawn out while being twisted are relatively straightly stretched. An object of the present invention is to provide a rotor-type open-end spinning machine capable of producing a yarn that improves the texture when made into a cloth even at high speed rotation.

[0010]

In order to achieve the above object, according to the invention of claim 1, the outer rotor is provided in an outer rotor having a fiber converging portion for concentrating fibers supplied in an opened state. In a rotor type open-end spinning machine provided with an inner rotor that is positively driven independently of a part of the yarn drawing passage, the yarn drawing passage is provided from the vicinity of the fiber focusing portion provided in the inner rotor. A yarn guide that guides the fiber bundle to a position facing the first rotor, and a first guide that is provided in the inner rotor and that contacts the fiber bundle that is guided to the yarn drawing passage from the rotation direction side of the inner rotor. A second rotor provided between the first guide of the inner rotor and the inner wall surface of the outer rotor and on the rotation direction side of the inner rotor with respect to the first guide. And a guide is provided.

According to the second aspect of the invention, the second
In the yarn path on the downstream side of the guide, a wall is provided to prevent the fibers supplied into the outer rotor from entering from the downstream of the second guide.

According to the invention of claim 3, the invention of claim 1
Alternatively, in the invention of claim 2, the yarn path is provided on the side opposite to the open end of the outer rotor with respect to the plane in which the fiber collecting portion is present.

According to the invention described in claim 4,
Alternatively, in the invention of claim 2, the yarn path is provided on a plane where the fiber converging portion exists.

[0014]

According to the first aspect of the invention, the spread fibers fed into the rotor from the fiber transport channel slide along the wall surface of the rotor and are converged on the fiber converging portion having the maximum inner diameter. One end of the fiber bundle bundled in the fiber bundle portion is connected to the yarn drawn by the drawing roller. The fiber bundle is peeled off from the fiber collecting portion and twisted by the rotation of the inner rotor rotating at a speed slightly higher than that of the outer rotor to be drawn out as a yarn.

The fiber bundle stripped from the fiber collecting portion moves to the yarn drawing passage with the first guide provided on the yarn path of the inner rotor contacting from the rotation direction side of the inner rotor. The yarn is pulled out so that the stripping point is on the rotation direction side of the inner rotor with respect to the second guide, and the fiber bundle is in contact with the second guide from the rotation direction side of the inner rotor. When the outer rotor and the inner rotor rotate at high speed, the fiber bundle receives a force in the direction of coming into contact with the wall surface of the outer rotor due to the action of centrifugal force.
However, due to the fact that the second guide is present between the first guide and the inner wall surface of the outer rotor and the rigidity of the fiber bundle, the fiber bundle stripped from the fiber focusing portion at the stripping point is again in the outer rotor. 1st without touching the inner wall surface
Will be guided to the guide. Therefore, the fiber bundle stripped from the fiber bundle at the stripping point draws a gentle curve and reaches the first guide. As a result, the twisting angle becomes obtuse, the twist is smoothly propagated to the fiber bundle up to the vicinity of the stripping point, and the twisting on the fiber bundle becomes uniform.

According to the invention described in claim 2, claim 1
In addition to performing the same function as the invention described in (1), there is a wall in the yarn path downstream of the second guide that blocks the fibers supplied into the outer rotor from entering from the downstream of the second guide. Therefore, it is possible to prevent the moving fibers on the inner wall surface of the outer rotor or the fibers of the fiber collecting portion from being wound around the fiber bundle passing through the second guide to become neck-wound fibers.

Further, in the invention described in claim 3, claim 1
Alternatively, in addition to performing the same operation as that of the invention described in claim 2, the fiber bundle moves along the inner wall surface of the outer rotor to a position corresponding to the plane where the fiber passage exits from the fiber collecting portion, and then the position. Stripped off.

According to the invention described in claim 4, claim 1
Alternatively, the same operation as the invention described in claim 2 is performed. The fiber bundle is peeled off directly from the fiber bundle.

[0019]

【Example】

(Embodiment 1) A first embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 3, a pair of rotating shafts 2 (only one is shown) are supported in parallel with each other via a bearing 3 on a base 1 fixed to a machine frame (not shown). Support disks 4 are integrally rotatably fitted to both ends of the rotary shaft 2, and a pair of adjacent support disks 4 form a wedge-shaped recess 5 (shown in FIG. 1).
A hollow rotor shaft 7 having an outer rotor 6 fitted and fixed at its tip is supported in the wedge-shaped recess 5 with its outer peripheral surface in contact with each support disk 4. Between the two pairs of support discs 4, a drive belt 8 common to a plurality of weights is provided on the rotor shaft 7.
Are arranged in a direction orthogonal to the rotor shaft 7 while being in pressure contact with the support disk 4. The drive belt 8 is driven by a drive motor (not shown), and the rotor shaft 7 is rotationally driven by the traveling of the drive belt 8.

Bearings 9 are fixed to large diameter portions 7a formed at both ends of the rotor shaft 7, and a shaft 10 penetrating the rotor shaft 7 is rotatably coaxial with the rotor shaft 7 through the bearing 9. It is supported. An inner rotor 11 is fitted and fixed to the tip of the shaft 10 so as to rotate integrally therewith, and a base end of the shaft 10 is in contact with a thrust bearing 12. Similar to the drive belt 8, a drive belt 13 provided in common for a plurality of weights is pressed against the shaft 10 while traveling in a direction orthogonal to the shaft 10, and the drive belt 1
The shaft 10 is rotationally driven by the traveling of No. 3. The thrust bearing 12 includes a case 14 in which lubricating oil O is stored, a ball 16 supported by an oil supply member 15 made of felt, and an adjusting screw 15 a that abuts on the ball 16 from the opposite side of the shaft 10. The supporting disk 4 is similar to that described in Japanese Patent Publication No. 53-32409, and when the supporting disk 4 rotates as the rotor shaft 7 rotates, the thrust bearing 12 with respect to the rotor shaft 7 rotates. It is fixed to the rotary shaft 2 in a slightly inclined state so that a thrust load toward the side acts. And
The thrust load acting on the rotor shaft 7 is transmitted to the shaft 10 via the bearing 9, and the thrust bearing 12
It is supposed to be supported by.

A boss portion 18 is formed in the housing 17 disposed at a position facing the open side of the outer rotor 6 so as to project into the outer rotor 6. The boss portion 18 has one end of a fiber transport channel 22 for guiding the fibers supplied by the action of the feed roller 19 and the presser 20 and opened by the combing roller 21 into the outer rotor 6. Boss 18
A navel 24 having one end of the yarn drawing passage 23 opened is disposed in the center of the. The yarn pipe 25 forming a part of the yarn drawing passage 23 is arranged so as to intersect with the center line of the navel 24.
The side end 25a is the twisting start point of the yarn (fiber bundle F). A casing 26 that covers the outer rotor 6 is disposed at a position facing the housing 17 so as to abut the end surface of the housing 17 via an O-ring 27. The casing 26 is a negative pressure source (not shown). To a pipe 28.

The inner rotor 11 is formed such that a part of its peripheral surface extends to the vicinity of the fiber converging portion 6a of the outer rotor 6, and the navel 24 is provided in the center portion on the side corresponding to the boss portion 18. A recess 29 which is fitted and constitutes a part of the yarn path 30 is formed. The inner rotor 11 is formed so that the radius of the maximum outer diameter portion is larger than the radius of the inner surface of the outer rotor 6 at the opening end. In the maximum outer diameter portion of the inner rotor 11, one end is formed in the vicinity of the fiber converging portion 6a of the outer rotor 6, and the other end is formed into a passage 30a that opens into the recess 29. The recess 29 and the passage 30a form a yarn path 30. ing. The yarn path 30 is provided on a plane where the fiber collecting portion 6a exists, and guides the fiber bundle F from the vicinity of the fiber collecting portion 6a to a position facing the yarn drawing passage 23.

As shown in FIGS. 1 and 2, a first guide 31 is arranged at the tip of the inner rotor 11 near the inlet of the yarn path 30 and closer to the rotation direction side of the inner rotor 11 with respect to the yarn path 30. It is set up. The first guide 31 is formed in a substantially semi-cylindrical shape. That is, the first guide 31 can come into contact with the fiber bundle F guided through the yarn path 30 to the yarn drawing passage 23 from the rotation direction side of the inner rotor 11. The first guide 3 is provided on the side opposite to the first guide 31.
A wall 32 having a wall surface 32a extending along the arc surface 1 is formed. The tip of the wall 32 is located on the rotation direction side of the inner rotor 11 with respect to the arc surface of the first guide 31, and the tip of the wall 32 constitutes the second guide 33. That is, in the yarn path 30 on the downstream side of the second guide 33, there is a wall 32 that blocks the fibers supplied into the outer rotor 6 from entering from the downstream of the second guide 33.

The inner rotor 11 is integrally formed of metal (for example, aluminum or aluminum alloy), and has excellent wear resistance due to surface treatment such as plating and ion plating on the surfaces of the guides 31, 33 and the wall 32. Hard layers such as a chromium plating layer and a titanium nitride layer are formed.

Next, the operation of the apparatus configured as described above will be described. During the spinning operation, the drive belts 8 and 13 travel in the same direction, and the outer rotor 6 and the inner rotor 11 are rotationally driven in the same direction via the rotor shaft 7 and the shaft 10, respectively. Unlike the rotation speed of the outer rotor 6, the inner rotor 11 rotates at the stripping speed of the fiber bundle F from the fiber collecting portion 6a (slightly higher than the rotation speed of the outer rotor 6). In this state, the fibers are opened by the action of the combing roller 21 and the fiber transport channel 2
The spread fiber fed into the outer rotor 6 from 2 slides along the inner wall surface of the outer rotor 6 and is converged on the fiber converging portion 6a which is the maximum inner diameter portion. The fiber bundle F collected in the fiber collecting portion 6a is connected to the yarn Y drawn through the yarn pipe 25 by a drawing roller (not shown),
As the yarn Y is pulled out, it is peeled off from the fiber collecting portion 6a, and is twisted by the rotation of the inner rotor 11 and drawn out as the yarn Y. The twist applied to the yarn Y and the fiber bundle F starts from the end 25a of the yarn pipe 25 as the starting point, and the outer rotor 6
Is transmitted to the fiber collecting portion 6a.

The stripping point P of the fiber bundle F is the second guide 3
It is pulled out at a speed that is closer to the rotation direction side of the inner rotor 11 than 3. Then, the fiber bundle F stripped off from the fiber collecting portion 6 a is guided into the yarn path 30 while being in contact with the second guide 33 and the first guide 31 provided at the inlet portion of the yarn path 30. That is, the fiber bundle F is pulled out in a state where the rotation direction side of the inner rotor 11 is in contact with the arc surface of the first guide 31. Therefore, the angle formed by the pulling direction of the fiber bundle F in the vicinity of the stripping point (twisting point) P and the fiber bundle F focused on the fiber focusing portion 6a, that is, the twisting angle θ is an obtuse angle. Then, the fiber bundle F that is twisted while being stripped from the fiber collecting portion 6a has a small difference in path between the inner side and the outer side, and the fiber bundle F is twisted into the fiber bundle F with a substantially uniform force in a state where the fibers are straightly stretched. Is added. As a result, the pulled-out yarn is less likely to have irregularities on the outer peripheral portion, and the texture of the cloth is improved.

When both rotors 6 and 11 rotate at high speed, the centrifugal force acting on the fiber bundle F moving from the stripping point P toward the first guide 31 becomes strong, and the fiber bundle F is moved toward the wall surface side of the outer rotor 6. The force that acts to press against is increased. However, since the second guide 33 existing between the stripping point P and the first guide 31 is located outside with the yarn path 30 in between, the fiber bundle F moves to the wall surface side of the outer rotor 6. Is blocked. Further, due to the rigidity of the fiber bundle F, the phenomenon that the fiber bundle F bends after passing through the second guide 33 and comes into contact with the wall surface of the outer rotor 6 does not occur. Therefore, both rotors 6 and 11 are 90,000 rp
Even when rotating at a high speed of about m, unlike the conventional apparatus, the fiber bundle F stripped from the fiber collecting portion 6a is always held in a state where the twisting angle θ is an obtuse angle.

Further, the yarn path 3 on the downstream side of the second guide 33
No. 0, the first guide 31 is provided on the inner wall surface side of the outer rotor 6.
Since the wall 32 having the wall surface 32a along the circular arc surface is provided, the fiber bundle F stripped off at the stripping point P reliably moves in the yarn path 30 along the circular arc surface. Also, the wall 32
Of the inner rotor 11 from the second guide 33
The fibers are reliably prevented from jumping into the fiber bundle F being twisted from the side opposite to the rotation direction, and the generation of neck-wound fibers is prevented.

(Second Embodiment) Next, a second embodiment will be described with reference to FIG. In this embodiment, the structure of the first guide provided at the tip of the inner rotor 11 is different from that of the above embodiment, and the other structures are the same. Inner rotor 1
At the tip of 1, the accommodating portion 34 that opens the yarn path 30 to the rotation direction side of the inner rotor 11 and the opening side of the outer rotor 6 is provided.
Are formed. In the accommodating portion 34, a cylindrical pin 35 that constitutes the first guide is provided, and a part of the outer peripheral surface thereof is the wall surface 32.
It is fixed in a state corresponding to a, and the side corresponding to the wall surface 32a becomes the first guide 31. The pin 35 is made of ceramics such as alumina, aluminum nitride (AlN), silicon carbide, and boron nitride, which have excellent wear resistance.

Also in this embodiment, both guides 31, 33
The wall 32 and the wall 32 have the same function as that of the above embodiment. Further, in the above embodiment, the inner rotor 11 is integrally formed as a whole, so that it is difficult to process the wall surface 32a and the first guide 31. However, in this embodiment, since the housing portion 34 is formed at the tip of the inner rotor 11, the wall surface 32a can be processed after the housing portion 34 is formed, which facilitates the processing. Further, since the first guide 31 is composed of the pin 35, the first guide 31 can be arranged at a desired position simply by fixing the pin 35 at a predetermined position.

Further, since the first guide 31 through which the fiber bundle F always slides is composed of the ceramic pin 35, the durability is improved, and the fiber guide F is worn to such an extent that it needs to be replaced due to long-term use. Also in this case, only the pin 35 needs to be replaced, and the entire inner rotor 11 need not be replaced.

(Third Embodiment) Next, a third embodiment will be described with reference to FIG. In this embodiment, the second guide 33 and the wall 3
The second structure is different from that of the first embodiment, and the other structures are the same as those of the first embodiment. The wall 32 has a wall surface 32a formed in a flat shape. An opening 11a is formed at the tip of the inner rotor 11 and opens toward the opening of the outer rotor 6. The pin second guide 33 is made of a ceramic pin and is fixed to a position corresponding to the tip of the wall 32 in the opening 11a. Therefore, also in this embodiment, the guides 31 and 33 and the wall 32 have substantially the same functions as in the first embodiment. Further, in this embodiment, since the second guide 33 through which the fiber bundle F always slides is constituted by a ceramic pin, durability is improved and
Even when it is worn out for a long time and needs to be replaced, only the pin needs to be replaced, and the entire inner rotor 11 does not have to be replaced.

(Fourth Embodiment) Next, a fourth embodiment will be described with reference to FIG. In this embodiment, the structure of the first guide is the second.
The structure is different from that of the second embodiment, and the other structure is the same as that of the second embodiment. A ceramic roller 36 is rotatably supported in the accommodating portion 34. Then, the wall surface 3 of the roller 36
The side corresponding to 2a serves as the first guide 31. Therefore,
In this embodiment, the same actions and effects as those of the second embodiment are exhibited, and since the roller 36 is rotated with the movement of the fiber bundle F, the pull-out resistance is reduced and the abrasion is less likely to occur.

The present invention is not limited to the above embodiments, but may be embodied as follows. (1) As shown in FIGS. 7 (a) to 7 (c), the yarn path 30 is provided on the side opposite to the open end of the outer rotor 6 with respect to the plane where the fiber collecting portion 6a exists. 7A to 7C, the upper side of the drawing is the opening side of the outer rotor 6.
In each of the above-described embodiments, the yarn path 30 is formed so as to be located on the plane where the fiber collecting portion 6a is present.
The fiber bundles F are arranged in the plane where the fiber collecting portions 6a are present and the yarn paths 30
It is pulled straight out toward. The fibers supplied from the fiber transport channel 22 into the outer rotor 6 slide on the inner wall surface (sliding wall) located on the opening side of the outer rotor 6 with respect to the fiber focusing portion 6a toward the fiber focusing portion 6a. Therefore, when the fiber bundle F is pulled straight out from the fiber bundle 6a toward the yarn path, the sliding wall interferes with the fibers sliding toward the fiber bundle 6a and the fiber bundle F being pulled out, The fibers sliding on the sliding wall are caught in the fiber bundle F (yarn Y) that is being drawn out, and the yarn appearance is deteriorated. However, when the yarn path 30 is provided on the side opposite to the open end of the outer rotor 6 with respect to the plane where the fiber collecting portion 6a exists, the fiber bundle F reaches the inner wall surface of the outer rotor 6 to a position corresponding to the plane where the yarn path 30 exists. It slides up and is stripped away from the sliding wall. Therefore, the fiber bundle F between the stripping point P and the entrance of the yarn path 30 and the fiber sliding on the sliding wall are less likely to interfere with each other. Therefore, (a) is the most preferable among (a) to (c).

(2) When the yarn path 30 is provided on the side opposite to the open end of the outer rotor 6 with respect to the plane where the fiber collecting portion 6a is present, the shape of the fiber collecting portion 6a is, for example, as shown in FIGS.
You may change suitably as shown in (c). That is,
As shown in (a), the sliding portion of the fiber bundle F may simply have a shape that extends obliquely toward the inner wall surface 6b of the outer rotor 6. Further, as shown in (b), the sliding portion of the fiber bundle F has a shape substantially orthogonal to the inner wall surface 6b of the outer rotor 6, or as shown in (c), the sliding portion of the fiber bundle F has an outer rotor 6. After extending so as to be substantially orthogonal to the inner wall surface 6b of
The shape may extend obliquely toward the inner wall surface 6b.

(3) The entire inner rotor 11 may be made of ceramic. In this case, wear of the first guide 31 and the second guide 33 is suppressed, and durability is improved. (4) In the second to fourth embodiments, both the first guide 31 and the second guide 33 may be made of ceramic. In this case, durability is improved and both guides 3
Exchange of 1, 33 becomes easy.

(5) The wall 32 is provided downstream of the second guide 33.
Alternatively, the second guide 33 may be provided so as to project in an isolated state, that is, the wall 32 may be omitted in FIG. In this case as well, the fiber bundle F stripped from the stripping point P does not come into contact with the inner wall surface of the outer rotor 6 again even if a centrifugal force is applied, and the twisting angle is maintained at an obtuse angle up to the first guide. Be guided.

(6) The shape of the inner rotor 11 may be a rotationally symmetrical shape extending to the vicinity of the fiber collecting portion 6a on the side opposite to the yarn path forming portion, or may be formed in a disk shape. Inventions other than those described in the claims that can be understood from the respective embodiments and modifications will be described below together with their effects.

(1) In the invention described in claims 1 to 4, the inner rotor is integrally formed of ceramic. In this case, both the first and second guides are less likely to wear and durability is improved.

(2) In the invention described in claims 1 to 4, the engaging surface of the first guide with the fiber bundle is a curved surface. In this case, the fiber bundle is pulled out without applying an excessive pulling resistance to the fiber bundle.

(3) In the invention described in claim 2, the engaging surface of the first guide with the fiber bundle is a curved surface, and the shape of the wall surface facing the curved surface of the first guide is formed. The curved surface corresponds to the curved surface. In this case, the fiber bundle is pulled out without applying an excessive pulling resistance to the fiber bundle.

[0042]

As described in detail above, the first to fourth aspects of the invention are described.
According to the invention described in (1), the fibers constituting the fiber bundle that is drawn out while being twisted are twisted into the yarn in a state where the fiber bundle is relatively straightly stretched, and the yarn that improves the texture when made into a cloth is rotated at high speed. Can also be manufactured. Further, according to the invention as set forth in claim 2, the generation of neck-wound fibers is prevented.
Further, according to the invention described in claim 3, a yarn having a better yarn appearance can be manufactured.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing a first embodiment embodying the present invention and showing a relationship among an outer rotor, an inner rotor, a support disc, and a rotor shaft as seen from an opening side of the outer rotor.

FIG. 2 is a partially enlarged sectional view of an outer rotor and an inner rotor.

FIG. 3 is a partial cross-sectional view of an open-end spinning frame.

FIG. 4 is a partially enlarged sectional view of a second embodiment.

FIG. 5 is a partially enlarged sectional view of a third embodiment.

FIG. 6 is a partially enlarged sectional view of a fourth embodiment.

FIG. 7 is a partial cross-sectional view showing a modified example in which the position of the yarn path is not on the same plane as the fiber focusing portion.

FIG. 8 is a schematic view showing a relationship between a drawn-out fiber bundle and a fiber converging unit in a conventional example.

FIG. 9 is a partial cross-sectional view of a conventional example.

FIG. 10 shows another conventional example, in which (a) is a partially cutaway plan view and (b) is a partially enlarged sectional view.

[Explanation of symbols]

6 ... Outer rotor, 6a ... Fiber collecting part, 11 ... Inner rotor, 23 ... Yarn drawing passage, 24 ... Navel, 25
… Yarn pipe, 30… Thread path, 31… First guide, 3
2 ... Wall, 32a ... Wall surface, 33 ... 2nd guide, 34 ... Storage part, 35 ... Pin, 36 ... Roller as 1st guide, F ... Fiber bundle.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hisaki Hayashi 2-chome, Toyota-cho, Kariya city, Aichi prefecture Toyota Industries Corp.

Claims (4)

[Claims] 1. An outer rotor having a fiber concentrating portion for concentrating fibers supplied in an opened state is positively driven independently of the outer rotor and part of the outer rotor corresponds to an end of a yarn drawing passage. In the rotor-type open-end spinning machine provided with an inner rotor, which is provided in the inner rotor, a yarn path provided in the inner rotor for guiding the fiber bundle from a vicinity of the fiber collecting portion to a position facing the yarn drawing passage. Between the first guide that comes into contact with the fiber bundle that guides the yarn path to the yarn drawing passage from the rotation direction side of the inner rotor, and between the first guide of the inner rotor and the inner wall surface of the outer rotor, and A rotor-type open-end spinning machine provided with a second guide provided on a rotation direction side of the inner rotor with respect to the first guide. 2. A yarn path on the downstream side of the second guide,
The rotor open-end spinning frame according to claim 1, further comprising a wall that prevents fibers supplied into the outer rotor from entering from a downstream side of the second guide. 3. The rotor type open-end spinning machine according to claim 1 or 2, wherein the yarn path is provided on a side opposite to an open end of the outer rotor with respect to a plane where the fiber collecting portion exists. 4. The rotor type open-end spinning machine according to claim 1, wherein the yarn path is provided on a plane where the fiber collecting portion is present.