JP3128978B2 - Rotor type open-end spinning machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotor type open-end spinning machine.

[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. The separated fibers are transported into the rotor by an air flow generated in the fiber transport channel based on the negative pressure in the high-speed rotating rotor. The fibers transported into the rotor are bundled in a fiber bundle located at the largest inner diameter of the rotor. Then, it is drawn out while being twisted by the action of a draw-out roller (not shown) through a guide hole and a yarn pipe provided at the center of the navel (yarn draw-out guide), and wound up on a bobbin as a package. .

[0003] With respect to the fiber bundle stripped from the fiber bundle, the bent portion of the yarn drawing path formed by the guide hole and the yarn pipe serves as a starting point of the twist, and the twist is sequentially propagated to the fiber bundle. It has become. That is, in the rotor type open-end spinning machine, the twist density in the fiber bundle portion of the rotor is lowest in principle. Therefore, in order to prevent yarn breakage due to small twist propagation to the fiber bundle during twisting, a false twist in the same direction as the real twist is added to the yarn (fiber bundle) upstream of the navel by the action of the navel. I have.

However, on the upstream side of the navel, the fluffy fibers rotate around the yarn along with the rotation by the twisting of the yarn, and when the false twist returns downstream of the navel, the fluffy fibers wind around the surface of the yarn. . This wrapped fiber is reverse-twisted, and has the problems of increasing the bending hardness of the yarn and deteriorating the yarn appearance. Also, the fiber bundle (fleece) of the fiber bundle
When false twist is propagated, there is also a problem that a neck-wound fiber wound around a fiber bundle in a coil shape is formed. When spinning a sweet-twisted yarn, it is necessary to increase the false twist in order to increase the spinning stability. could not.

To solve this problem, Japanese Patent Publication No.
Japanese Patent Publication No. 3895 proposes a yarn pull-out guide (navel) 41 as shown in FIG. Thread pullout guide 4
Numeral 1 is composed of a disc-shaped upper plate 41a and a cylindrical portion 41b fixed to the axis of the upper plate 41a. A thread inlet 41c is formed on the upper plate 41a eccentrically from the axis of the cylindrical portion 41b. I have. The yarn inlet 41c passes through the yarn introduction hole 41d, and the cylindrical portion 41b
It is connected to a thread passage 41e formed inside. The yarn passage 41e has a yarn outlet 41f formed on the opposite side of the yarn inlet 41c.

From the starting point of twisting, the fiber bundle 42 of the rotor 42
If the yarn Y comes into surface contact with the yarn pull-out guide 41 or the yarn Y has a large bending angle before reaching a, the twist becomes difficult to propagate. Accordingly, when the yarn pull-out guide 41 is used, in a state where the yarn Y passes through the side corresponding to the yarn pull-out port 41f as shown by a chain line, that is, in a state where the contact angle of the yarn Y with the yarn inlet 41c is large, the bent portion A Prevents the propagation of the twist added to the yarn. As a result, the twist applied to the yarn at the bent portion A is stored between the bent portion A and the yarn inlet 41c. In a state where the yarn Y passes on the opposite side of the yarn outlet 41f as shown by a solid line, that is, in a state where the contact angle of the yarn Y with the yarn inlet 41c is small, the propagation of the twist added to the yarn Y at the bent portion A Is good. As a result, the twists stored up to that time and the twists newly added to the yarn Y are propagated toward the fiber bundle 42a, and the spinnability is improved. The contact angle is an angle formed by normal lines at both ends of a portion where the yarn Y is in contact with the yarn inlet 41c.

[0007]

However, in the above-described yarn pulling guide 41, when the yarn Y passes on the side opposite to the yarn pulling-out port 41f, the yarn Y moves between the bent portion A and the fiber collecting portion 42a. The yarn is drawn out while being in contact with two places, the peripheral surface of the yarn inlet 41c and the peripheral surface of the yarn introduction hole 41d. Therefore, it is difficult for the twist applied at the bent portion A to reliably propagate to the fiber bundle 42a. Further, the yarn Y is pulled out by the action of the centrifugal force while extending in the direction orthogonal to the axis of the rotor 42. Therefore, as shown in FIG. 10, when the end of the yarn inlet 41c and the fiber bundle 42a are not on the same plane, the yarn Y is drawn straight from the fiber bundle 42a toward the yarn inlet 41c. Absent. As a result, the contact angle of the yarn Y with respect to the yarn inlet 41c increases, and the twist is
While the yarn Y passes through the section that propagates to the side 2a, false twist is applied to the yarn Y. That is, the fluffy fibers are wound around the surface of the yarn when the false twist returns, so that the inconvenience of increasing the bending hardness of the yarn and deteriorating the yarn appearance cannot be solved.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to ensure that the real twist applied at the twist origin is propagated to the vicinity of the fiber bundle, and the actual twist is performed without adding false twist. It is an object of the present invention to provide a rotor-type open-end spinning machine capable of spinning alone.

[0009]

In order to achieve the above object, according to the first aspect of the present invention, a guide member is fixedly arranged on the open side of the rotor so as to face the rotor, and the guide member substantially rotates. A guide hole having an inlet on the axis is formed, a twisting member serving as a twisting point is provided on the downstream side in the spinning direction from the guide hole, and the guide member is provided between the guide hole and the twisting point. A portion was formed so that there was no contact portion, and a portion where the yarn contact angle at the entrance of the guide hole was large enough to prevent the propagation of the actual twist and a portion large enough not to prevent the propagation of the real twist was continuously formed.

[0010] According to the second aspect of the present invention, a twisting member serving as a twisting point is provided on the open side of the rotor in opposition to the rotor, and the rotor that is positively driven independently of the rotor is provided in the rotor. And a guide portion which is provided on the same coaxial line as the rotating body, engages with the yarn drawn out of the fiber bundle portion and guided to the twisting member, and guides the yarn so as not to contact other portions, The shape of the portion was formed such that the contact angle of the yarn with the guide portion was large enough not to prevent the propagation of the real twist.

[0011]

Since one end of the fiber bundle collected by the fiber collecting portion of the rotor is connected to the yarn drawn by the drawing roller, the fiber bundle is peeled off from the fiber collecting portion as the yarn is drawn, and the rotation of the rotor is caused by the rotation of the rotor. It is pulled out as a yarn while being twisted. Twist is applied to the yarn (fiber bundle) with the twisting member as the starting point of twist, and the twist tends to propagate toward the fiber bundle portion.

According to the first aspect of the present invention, the fiber bundle peeled from the fiber bundle is brought into contact with the guide hole of the guide member provided between the twisting point and the fiber bundle to change the drawing direction. And it is led to the twist origin. When the yarn passes through the portion where the contact angle becomes large at the entrance of the guide hole, the twist applied at the twisting point is not propagated to the fiber bunching portion side, and between the twisting point and the entrance of the guide hole. Is stored in Then, when the yarn passes through a portion where the contact angle becomes smaller at the entrance of the guide hole, the accumulated twist and the twist newly added at the twist starting point are propagated to the fiber collecting portion side. That is, the twist added to the yarn at the twist origin is propagated to the fiber collecting portion while the yarn makes one rotation at the entrance of the guide hole. Therefore, the strength of the fiber bundle (yarn) immediately after being stripped from the fiber bundle increases, and spinning can be performed only by actual twisting without adding false twist.

According to the second aspect of the present invention, the fiber bundle stripped from the fiber bundle is engaged with a guide provided on a rotating body which rotates independently of the rotor, and the drawing direction thereof is changed. It is led to the twist origin. The twist applied at the twisting point is propagated to the fiber bunching unit side without being prevented from being propagated by the guide unit, and the fiber bundle (yarn) immediately after being stripped from the fiber bunching unit
The strength of is increased. Since the rotating body is rotated at substantially the same speed as the stripping speed of the fiber bundle , the guide portion revolves around the twist starting point together with the yarn, and when the yarn passes through the guide portion, false twist is formed on the yarn. Will not join. That is, the yarn is spun only by the actual twisting, the sweet twisted yarn can be stably spun, and the fiber does not wind around the surface of the spun yarn in the reverse twisting.

[0014]

【Example】

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, a boss 3 is formed on a housing 1 of the spinning unit at a position facing the open side of the rotor 2. One end of a fiber transport channel 5 for guiding the fiber opened by the combing roller 4 into the rotor 2 is opened on the peripheral surface of the boss 3. The rotor 2 is fitted and fixed to the tip of a rotor shaft 6, and the rotor shaft 6 is provided with a bearing 7 in a casing 7.
a. The drive belt 8 driven by a drive motor (not shown) is
, And the rotor shaft 6 is rotationally driven by the travel of the drive belt 8. The casing 7 is connected to a negative pressure source (not shown) via a pipe 9.

In the center of the boss 3, an accommodation space 10 with the rotor 2 side open is formed, and a support rod 11 is disposed in the accommodation space 10 so as to be able to reciprocate in the axial direction of the rotor shaft 6. A roller 12 serving as a twisting member serving as a twisting point is rotatably supported at the tip of the support rod 11. At a position corresponding to the opening end of the accommodation space 10,
The yarn pipe 13 is provided so as to communicate with the center line of the rotor shaft 6 in a state of intersecting therewith. Support rod 1
Reference numeral 1 denotes an operation position where the roller 12 is operated by a driving device (not shown) so that the roller 12 corresponds to the open end of the yarn pipe 13;
3 is moved to the retreat position deviated from the opening end of the opening 3. A draw-out roller (not shown) is provided downstream of the yarn pipe 13.

A plate-like guide member 14 is fixed to the boss 3 so as to cover the opening of the accommodation space 10. The guide member 14 has a portion corresponding to the housing space 10 formed conically bent toward the rotor shaft 6, and a guide hole 15 is formed substantially at the center thereof. The guide hole 15 is formed such that the end face of the inlet on the yarn pipe 13 side is in contact with a plane including the fiber bundle 2a. The inlet end face on the side opposite to the yarn pipe 13 is formed so as to be located closer to the opening end of the rotor 2 than the inlet end face on the yarn pipe 13 side. The guide hole 15 is formed such that the distance from the rotation axis of the rotor 2 to the peripheral surface is greater on the opposite side of the yarn pipe 13 than on the yarn pipe 13 side. Guide hole 15
Is formed in an arc shape. The radius of curvature of the arc portion is smaller on the side opposite to the yarn pipe 13 than on the yarn pipe 13 side. The position of the roller 12 and the amount of protrusion of the tip of the guide hole 15 during spinning are determined by the guide hole 15.
The contact angle of the yarn at the entrance of the yarn pipe 13 is set to a size that prevents the propagation of the actual twist, and the contact angle of the yarn at the entrance opposite to the yarn pipe 13 is set to a size that does not prevent the propagation of the actual twist. Is set to

Next, the operation of the above-configured device will be described. The spread fiber sent into the rotor 2 from the fiber transport channel 5 slides along the inner wall surface of the rotor 2,
The fibers are bundled into the fiber bundle 2a, which is the largest inner diameter portion, to form a fiber bundle. The end of the fiber bundle is connected to a yarn Y drawn out from a guide hole 15 formed in the guide member 14. As the yarn Y is pulled out by the action of the pull-out roller, the fiber bundle F is sequentially peeled off from the fiber collecting portion 2a. Then, while being twisted, the yarn Y is drawn out through the yarn pipe 13 and wound up on a bobbin as a package (both not shown).

During the spinning operation, the roller 12 is disposed at the operation position shown by the solid line in FIG. 1, and the yarn Y drawn from the yarn pipe 13 through the guide hole 15 contacts the roller 12, and the contact portion with the roller 12 It is the starting point for twisting the yarn Y. When the yarn Y makes one rotation around the roller 12, one actual twist is applied to the yarn Y between the guide member 14 and the roller 12. Thread Y is Fig. 2
When the yarn S moves in the section S, that is, when the yarn pipe 13 is in contact with the peripheral surface of the guide hole 15, the yarn Y
Contact angle between the guide member 14 and the guide member 14 is large. As a result, the actual twist is not propagated to the yarn Y upstream of the guide member 14, and the twist is accumulated in the yarn Y between the roller 12 and the guide member 14.

On the other hand, when the yarn Y moves in the section D in FIG. 2, that is, when the yarn Y contacts the peripheral surface of the guide hole 15 on the side opposite to the yarn pipe 13, the yarn Y and the guide member 1
4 is small. As a result, the twist added to the yarn Y at the twist origin is not blocked by the guide member 14 and is propagated to the fiber bundle 2a side. Further, when moving in the section S, the twist accumulated in the yarn Y is propagated to the fiber collecting portion 2a together with the newly added twist. That is, the twist added to the yarn Y at the twist origin propagates to the fiber bundle 2a side while the yarn Y makes one round of the guide hole 15. That is, since the twisting of the fiber bundle F is effectively performed, the strength of the yarn (fiber bundle) in the vicinity of the stripping point is increased even if the yarn (fiber bundle) is not false-twisted, and the spinning of the yarn is stabilized. The nature increases. Therefore, spinning of the sweet twist yarn becomes possible.

Further, since the frictional resistance between the guide member 14 and the yarn Y is small and the yarn Y moves while sliding on the peripheral surface of the guide hole 15 without sliding, false twist is not applied to the yarn Y. That is, the yarn Y is spun only by the real twist. As a result, the fiber bundle F bundled in the fiber bundle portion 2a is compared with the case where there is a false twist.
Since no strong twist propagates, no neck-wound fiber is generated.
Also, since false twist is hardly added to the yarn Y, the fiber does not wind around the surface of the spun yarn in reverse twist.

(Embodiment 2) Next, a second embodiment will be described with reference to FIGS. In this embodiment, the structure of the twisting member and the guide member 14 is different from that of the above embodiment. FIG.
As shown in FIG. 2, a pair of rollers 16 and 17 are rotatably arranged in the accommodation space 10 with an extension of the rotation axis of the rotor 2 interposed therebetween. One roller 16 is supported on a support shaft 19 protruding from a bracket 18. The other roller 1
Numeral 7 is rotatably supported at the tip of a support arm 20 rotatably supported by a bracket 18.
6, the yarn Y is sandwiched between the rollers 16 by pressing. The support arm 20 is located at a position where the roller 17 is pressed against the roller 16 by a driving device (not shown).
It is arranged to be pivotally disposed at a position away from the camera.

As shown in FIG. 4, the guide member 14 has a central portion bent toward the rotor shaft 6 as in the above-described embodiment. The guide hole 15 formed in the center of the guide member 14 is formed to be elongated so that the distance from the rotation axis of the rotor 2 to the peripheral surface increases on the yarn pipe 13 side and on the side opposite to the yarn pipe 13. That is,
In the device of this embodiment, the yarn Y
, Ie, the twist propagation section D has two sections: a range of approximately 90 ° on the yarn pipe 13 side and a range of approximately 90 ° on the side opposite to the yarn pipe 13.
The twist accumulation section S is two sections between them.

At the time of spinning, the roller 17 is arranged at a position for holding the yarn Y in cooperation with the roller 16. Fiber bundle 2a
The fiber bundle stripped from the yarn is twisted with the rotation of the rotor 2 to form a yarn Y, and the yarn Y is drawn out from the yarn pipe 13 through a guide hole 15 and a holding portion between rollers 16 and 17. The nip point by the rollers 16 and 17 is the starting point of the twist applied to the yarn Y.

In the apparatus of this embodiment, the yarn Y alternately passes twice through the twist accumulation section S and the twist propagation section D while making one round of the guide hole 15 around the rollers 16 and 17. Accordingly, the propagation of the accumulated twist to the fiber bundle 2a side is averaged, the strength of the fiber bundle in the vicinity of the fiber bundle 2a is improved, and the spinning of the sweet twist yarn can be performed more stably. At the time of splicing, the support arm 20 is rotated in the counterclockwise direction in FIG. 4, and the seed yarn is reversely inserted from the yarn pipe 13 in a state where the interval between the rollers 16 and 17 is widened.

(Embodiment 3) Next, a third embodiment will be described with reference to FIGS. In this embodiment, the configuration of the roller 12 is different from that of the first embodiment, and the other configuration is the same. That is, the V groove 12a is provided at the center of the outer peripheral surface of the roller 12.
Are formed. When the roller 12 having this configuration is used, the yarn Y is pulled out while being in contact with the roller 12 in a state of engaging with the V groove 12a. Accordingly, the rotation inhibiting force on the yarn Y increases, so that the twist added to the yarn Y at the twist origin when the yarn Y passes through the twist accumulation section S is reliably accumulated. Then, when the yarn Y passes through the twist propagation section D, the twist is reliably propagated to the fiber bundle 2a side, and the spinning of the sweet twist yarn can be stably performed.

(Embodiment 4) Next, a fourth embodiment will be described with reference to FIGS. This embodiment is significantly different from the above embodiments in that a rotor 21 that is actively driven independently of the rotor 2 is provided in the rotor 2. The twisting member is composed of two rollers 16 and 17 as in the second embodiment.

As shown in FIG. 7, the rotor shaft 22 having the rotor 2 fitted and fixed at the tip is formed in a hollow shape, and bearings 23 are fixed inside both ends (only one side is shown). A shaft 24 is rotatably supported by the rotor shaft 22 so as to pass through the rotor shaft 22 via a bearing 23. The rotating body 21 is fitted and fixed to the tip of the shaft 24 so as to be integrally rotatable. The shaft 24 is pressed against a drive belt (not shown), and is positively driven independently of the rotor 2 by running of the drive belt. In addition, in order to improve the sealing property between the boss 3 and the rotating body 21, the rotating body 21 has a shaft 24 so that a gap between the rotating body 21 and the end face of the boss 3 is as small as possible.
It is fixed to.

The rotating body 21 has a recess 25 at a position corresponding to the shaft 24 on the side corresponding to the boss 3. One end of the maximum diameter portion of the rotating body 21 has a fiber bundle 2a.
In the vicinity, a groove is formed that forms a thread path 26 extending in the radial direction of the rotating body 21 with the other end opened on the peripheral surface of the recess 25. Then, a lid 27 covering the groove and the concave portion 25 is fixed to the rotating body 21. A through hole 28 is formed in the cover 27 at a position facing the recess 25 and at a position corresponding to the base end of the thread path 26. The cover 27 engages with the yarn Y pulled out from the fiber bundle 2a at the base end of the yarn path 26 and guided to both rollers 16, 17, and the yarn Y
A guide portion 29 is provided so as to protrude so as not to contact other portions. The tip of the guide portion 29 is formed in an arc shape. Also, the amount of protrusion of the guide portion 29 and the rotor 16 are adjusted so that the contact angle of the yarn Y does not prevent the twist applied to the yarn at the nip point between the rotors 16 and 17 from propagating to the fiber bundle 2a. , 17 are set.

During the spinning operation, the rotor 2 and the rotating body 21 are driven to rotate in the same direction via the rotor shafts 22 and 24, respectively. The rotating body 21 is rotated in the same direction as the rotor 2 at a speed different from the rotating speed of the rotor 2 at a speed at which the fiber bundle F is peeled off from the fiber bundle 2a (slightly faster than the rotating speed of the rotor 2). The fiber bundle F collected by the fiber collecting portion 2a is connected to the yarn Y drawn out through the yarn pipe 13 by the drawing roller, and is stripped off from the fiber collecting portion 2a as the yarn Y is drawn out into the yarn path 26. Be guided.
The fiber bundle F is drawn out as the yarn Y while being twisted by the rotation of the rotating body 21 as the yarn Y is drawn out. The twist applied to the yarn Y is sequentially propagated to the fiber bundle 2a side with the nip point of the rollers 16 and 17 as the twist origin.

The yarn (fiber bundle) Y which is peeled off from the fiber bundle 2a and guided to the nip point of the rollers 16 and 17 serving as a twisting point only comes into contact with the guide part 29 in the middle and does not come into contact with other parts. . Since the contact angle of the yarn Y with respect to the guide portion 29 is small, the twist added to the yarn Y at the twist origin is reliably propagated to the fiber bundle portion 2a without the propagation of twist in the guide portion 29. . Further, since the rotating body 21 is rotated at the same speed as the speed at which the fiber bundle F is stripped from the fiber collecting portion 2a, there is no possibility that the yarn Y rolls on the guide portion 29 at all. Therefore, no false twist is applied to the yarn Y by the guide portion 29. That is, in this embodiment, unlike the above-described embodiments, the twist added to the yarn Y is always propagated to the fiber bundle 2a side, so that spinning is performed more stably.

In each of the above embodiments, the position of the end face of the guide hole 15 is inclined with respect to the plane including the fiber convergence portion 2a, and the yarn from the fiber convergence portion 2a to the guide hole 15 in the twist propagation section D. (Fiber bundle) Y is not linear. That is, the yarn (fiber bundle) Y extends from the end face of the guide hole 15 to the wall surface of the rotor 2 in a state orthogonal to the axis by the centrifugal force, and the end is pressed against the wall surface of the rotor 2 by the centrifugal force. . Therefore, the yarn Y vibrates in the stripping portion, and the spinning stability is reduced by that amount. However, in the apparatus of this embodiment, the yarn (fiber bundle) Y from the guide portion 29 to the fiber bundle portion 2a is linear. Therefore, the fiber bundle F is always stripped off from the fiber collecting section 2a in the same state, and the yarn Y does not vibrate at the stripping section, thereby improving spinning stability.

The present invention is not limited to the above embodiments. For example, in the first embodiment, the twisting member is replaced with the roller 12 as shown in FIG. It may be arranged so as to protrude inward, and a plurality of engaging portions 30 may protrude from the inner surface of the distal end. Further, in other embodiments, the twisting member may be replaced with the rollers 16 and 17 and may have another configuration such as the roller 12.

In the fourth embodiment, a member constituting the guide portion 29 may be attached to the base end of the yarn path 26 without providing the cover 27. Further, the position of the guide portion 29 is not limited to the base end of the yarn path 26, and may be provided near the entrance of the yarn path 26 as long as the yarn Y between the twisting member and the guide portion 29 does not contact other members. Good. Further, the yarn path 26 is not always necessary, and the rotating body 21 does not have to extend to the vicinity of the fiber bundle 2a.

[0034]

As described above in detail, according to the present invention, the twist applied to the yarn at the starting point of the twist is reliably propagated to the fiber bundle side, so that the spinning can be performed only by the actual twist, and the sweet twisted yarn can be obtained. Can be spun. Also, almost no false twist is generated in the fiber bundle upstream from the point where the twist originates, and the fiber does not wind around the surface of the spun yarn in reverse twist, and has a low bending hardness and good appearance. Can be spun.

According to the second aspect of the present invention, since the real twist added at the twisting point is always propagated to the fiber convergence portion, the spinning of the sweet twist yarn is further stabilized and false twist is imparted. There is no danger and the inconvenience caused by the provision of false twist is reliably eliminated.

[Brief description of the drawings]

FIG. 1 is a partial sectional view of a first embodiment embodying the present invention.

FIG. 2 is an enlarged sectional view taken along line AA of FIG.

FIG. 3 is a reduced sectional view taken along line BB of FIG. 4;

FIG. 4 is a partial sectional view of a second embodiment.

FIG. 5 is a partial sectional view of a third embodiment.

FIG. 6 is a sectional view corresponding to FIG. 2;

FIG. 7 is a partial sectional view of a fourth embodiment.

FIG. 8 is a reduced sectional view taken along the line CC of FIG. 7;

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

FIG. 10 is a partial sectional view of a conventional device.

[Explanation of symbols]

Reference numeral 2 denotes a rotor, 2a denotes a fiber bundle, 12 denotes a roller as a twisting member, 12a denotes a V groove, 13 denotes a yarn pipe, and 14 denotes a yarn pipe.
... Guide member, 15 ... Guide hole, 16, 17 ... Roller as twisting member, 21 ... Rotating body, 26 ... Thread path, 29 ...
Guide part, F: fiber bundle, Y: thread.

Continuation of the front page (72) Inventor Yasuyuki Kawai 2-1-1, Toyota-cho, Kariya-shi, Aichi Prefecture Inside Toyota Industries Corporation (56) References JP-A-2-6636 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) D01H 4/08 D01H 4/40

Claims (2)

(57) [Claims] 1. A guide member is fixedly arranged on the open side of a rotor so as to face the rotor, and a guide hole having an inlet substantially on the rotation axis of the rotor is formed in the guide member, and a guide hole is provided downstream from the guide hole in the spinning direction. A twisting member serving as a twisting point is provided on the side, the guide member is formed so that there is no contact portion with the yarn between the guide hole and the twisting point, and the contact angle of the yarn at the entrance of the guide hole Is a rotor-type open-end spinning machine in which a portion having a size that prevents the propagation of a real twist and a portion having a size that does not prevent the propagation of a real twist are continuously formed. 2. A twisting member serving as a twisting point is provided on the open side of the rotor in opposition to the rotor, and a rotating body that is positively driven independently of the rotor is provided on the coaxial line with the rotor. A guide portion that engages with the yarn that is drawn out of the fiber bundle portion and is guided to the twisting member, and that guides the yarn so that the yarn does not contact other portions, and adjusts the shape of the guide portion with respect to the guide portion. Rotor-type open-end spinning frame formed so that the contact angle of the rotor does not prevent the propagation of the real twist.