JP3128957B2 - 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, and the separated fibers are separated based on a negative pressure in a rotor rotating at a high speed. It is transported into the rotor by the airflow generated in the transport channel. The fibers transported into the rotor are bundled in a fiber bundle (fiber bundle groove), which is the maximum inner diameter of the rotor, and are added by the action of a drawing roller from a guide hole (thread drawing passage) provided at the center of the navel. It is pulled out while being twisted and wound up as a package on a bobbin. That is, in the rotor-type open-end spinning machine, when the fiber bundle bundled in the fiber bundle is stripped from the fiber bundle and pulled out along the wall surface of the guide hole formed in the center of the navel, The fiber bundle is twisted by being drawn out while rotating along the inner wall surface of the guide hole with the rotation of the rotor due to friction with the wall surface.

However, the fiber bundle bundled in the fiber bundle is only attached to the inner wall surface of the fiber bundle by the action of centrifugal force accompanying the rotation of the rotor. Therefore, the twist added to the fiber bundle drawn out while rotating along the guide hole propagates to the fiber bundle before being drawn out as a yarn while being attached to the fiber collecting portion, and the fiber bundle in the fiber collecting portion rotates by itself. I do. As a result, twist is applied in a state in which the fiber is not sufficiently stretched because a sufficient tension is not obtained at the time of twisting, so that the fiber is not twisted straight and the yarn strength is not increased.

Japanese Patent Application Laid-Open No. 57-56528 discloses an apparatus for solving the drawbacks of the conventional open-end yarn. A fiber bundle bundled in the fiber bundle section is provided inside a rotor (outer rotor) having a fiber bundle section. An inner rotor having a spinning chamber having a fiber suction tube for sucking is provided so as to perform differential rotation with respect to the rotor, and compressed air is supplied to the spinning chamber of the inner rotor to generate an air vortex, thereby producing a fiber. The fiber bundle condensed in the converging section is suctioned by a fiber suction tube into the spinning chamber, twisted into a fiber form by the action of the air vortex, and formed into a yarn form. A device has been proposed which discharges and withdraws with a withdrawal means.

[0005]

In the above-mentioned apparatus, the structure of the inner rotor is complicated and it is difficult to manufacture the inner rotor. Further, no means is provided for preventing the twist applied to the fiber bundle by the action of the air vortex from propagating to the fiber bundle attached to the fiber bundle before being drawn out as a yarn. As a result, since the twist is applied in a state where the fiber is not sufficiently stretched, the conventional problem that the fiber is not twisted straight and the yarn strength does not increase has not been solved yet.
Also, compressed air used to generate an air vortex having sufficient suction force in the spinning chamber of the inner rotor to provide the fiber suction pipe with a suction action for sucking the fiber bundle collected in the fiber collecting portion of the outer rotor. There is also a problem that the efficiency is low.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object thereof is to twist and twist a fiber constituting a fiber bundle to be drawn while being twisted into a yarn in a relatively straightened state. Another object of the present invention is to provide a rotor-type open-end spinning machine capable of producing a yarn having a large tensile strength.

[0007]

In order to achieve the above object, according to the present invention, there is provided a rotor having a fiber converging portion for converging fibers supplied in an open state, and is independently driven independently of the rotor. And a rotor having at least a portion thereof facing the vicinity of the fiber bundle portion of the rotor and a portion corresponding to the end of the yarn drawing path is provided on the same axis as the rotor, and the rotor has a portion near the fiber bundle portion. And a thread guide for guiding the fiber bundle to a position opposed to the yarn pull-out passage, and a pair of contact members for contacting the fiber bundle from both sides with the fiber bundle at an end of the yarn path on the fiber bunching portion side. A twist propagation prevention part was provided.

Further, in the invention according to claim 2, the twist propagation preventing portion includes an urging means for urging at least one of the contact members toward the other contact member. In the invention according to claim 3, at least one of the pair of contact members constituting the twist propagation preventing portion is movable, and the other contact member is contacted by centrifugal force at the time of rotation of the rotating body. They are arranged so that the distance between the members is small.

[0009]

The spread fiber fed into the rotor from the fiber transport channel slides along the rotor wall and is collected at the fiber collecting portion which is the maximum inner diameter portion. One end of the fiber bundle collected in the fiber collecting section is connected to the yarn drawn by the drawing roller. The fiber bundle is stripped off from the fiber collecting section, guided to a yarn path formed on a rotating body, and drawn out as a yarn while being twisted by the rotation of the rotating body rotating at substantially the same speed as the rotor. When twist is applied to the fiber bundle stripped from the fiber bundle, the twist applied to the fiber bundle is upstream of the fiber bundle by the action of the twist propagation preventing portion provided at the fiber bundle side end of the yarn path ( Propagation to the fiber bundle on the fiber collecting portion side) is suppressed. Then, the fiber bundle is twisted in a state where tension is applied to the fiber at the time of twisting and the fiber is stretched. Since a pair of contact members constituting the twist propagation preventing portion comes into contact with the fiber bundle from both sides thereof, the rotation of the fiber bundle is reliably prevented at the portion, and the twist propagates to the fiber bundle upstream of the portion. Is reliably suppressed.

[0010]

【Example】

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, a pair of rotating shafts 2 (only one is shown) are supported in parallel with each other via bearings 3 on a base 1 fixed to a machine frame (not shown). At both ends of the rotating shaft 2, support disks 4 are fitted so as to be integrally rotatable, respectively, and a pair of adjacent support disks 4 form a wedge-shaped recess 5 (shown in FIG. 3).
Inside the wedge-shaped recess 5, a hollow rotor shaft 7 having a rotor 6 fitted and fixed at the tip is supported with its outer peripheral surface in contact with each support disk 4. A drive belt 8 common to a plurality of weights is disposed between the two pairs of support disks 4 in a direction orthogonal to the rotor shaft 7 in a state where the rotor shaft 7 is pressed against the support disks 4. The drive belt 8 is driven by a drive motor (not shown), and the rotor shaft 7 is rotationally driven by the travel 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 rotatable coaxially with the rotor shaft 7 via the bearing 9. It is supported by. The shaft 10 has a rotating body 11 fitted and fixed to the distal end so as to be integrally rotatable, and a base end in contact with a thrust bearing 12. A drive belt 13 provided in common with a plurality of weights, like the drive belt 8, is pressed against the shaft 10 while running in a direction perpendicular to the shaft 10, and the shaft 10 is driven to rotate by the travel of the drive belt 13. Has become. The thrust bearing 12 includes a case 14 in which lubricating oil O is stored, a ball 16 supported by a felt oil supply member 15, and an adjusting screw 15a that abuts the ball 16 from the opposite side of the shaft 10. When the support disk 4 is rotated along with the rotation of the rotor shaft 7, the support disk 4 is, as described in Japanese Patent Publication No. 53-32409, thrust bearing 12 with respect to the rotor shaft 7. It is fixed to the rotating shaft 2 in a slightly inclined state so that a thrust load toward the side acts. Then, a thrust load acting on the rotor shaft 7 is transmitted to the shaft 10 via the bearing 9, and is supported by the thrust bearing 12.

A boss 18 is formed in a housing 17 provided at a position facing the open side of the rotor 6 so as to protrude into the rotor 6. One end of a fiber transport channel 22 that guides the fiber supplied by the action of the feed roller 19 and the presser 20 and opened by the combing roller 21 into the rotor 6 is opened in the boss portion 18. A casing 23 that covers the rotor 6 is disposed at a position facing the housing 17 so as to be in contact with an end surface of the housing via an O-ring 24. The casing 23 is connected to a negative pressure source (not shown) by a pipe 25. Connected through.

At the center of the boss portion 18, there is provided a navel 27 having an open end at one end of a thread pull-out passage 26. An ejector 29 as a negative pressure generator is disposed in the middle of a yarn pipe 28 that constitutes a downstream portion of the yarn drawing passage 26. The yarn pipe 28 is disposed so as to intersect with the center line of the navel 27,
The seventh end 28a is the starting point of the twisting of the yarn. The ejector 29 is provided with a passage 30 provided in the center,
And a plurality of injection holes 31 for injecting compressed air toward the outlet side (the line drawing side) of the passage 30 and an annular chamber 32 provided outside the injection holes 31.
The chamber 32 communicates with each of the injection holes 31 and the holes 33 and has an opening to which a compressed air supply pipe 34 is connected. The compressed air supply pipe 34 is connected to a compressed air source (not shown), and a pressure adjusting device and a valve (neither is shown) are provided in the middle thereof. The ejector 29 generates a negative pressure on the inlet side of the passage 30 by injecting compressed air having a predetermined pressure supplied from a compressed air source via a compressed air supply pipe 34 from an injection hole 31. ing.

The rotating body 11 is formed so that a part of its peripheral surface is extended to the vicinity of the fiber bundle 6a of the rotor 6, and a navel 27 is provided at a central portion on the side corresponding to the boss 18. A recess 35 to be fitted is formed. The rotating body 11 is formed so that the radius of the maximum outer diameter portion is larger than the radius of the inner surface of the open end of the rotor 6. One end of the maximum outer diameter portion of the rotating body 11 is located in the vicinity of the fiber bundle 6a of the rotor 6, and the other end faces the yarn pull-out passage 26, that is, the concave portion 3.
5 are formed so as to extend in the radial direction from the center of the rotating body 11 respectively. In addition, the rotating body 11 is fixed to the shaft 10 so that a gap between the rotating body 11 and the end face of the boss 18 is as small as possible in order to improve the sealing property between the boss 18 and the rotating body 11.

At a position corresponding to the entrance of the yarn path 36 at the end of the rotating body 11, a housing recess 37 opened to the housing 17 side and the fiber bundle 6a side is formed, and the housing 17 side of the housing recess 37 is a cover. It is closed by the plate 38. As shown in FIGS. 5 to 7, the accommodation recess 37 is formed so as to bulge out on both sides of the yarn path 36, and a pair of cylindrical contact members 39 and 40 sandwiching the yarn path 36 in the accommodation recess 37. It is arranged. The two contact members 39 and 40 constitute a twist propagation preventing portion. The first contact member 39 is the rotating body 1
1 is immovably fixed. A pin 41 protrudes from the second contact member 40 at a position eccentric from its center O1.
Is rotatably supported. The center O1 of the second contact member 40 and the center O2 of the pin 41 are eccentric by a distance e. The position of the pin 41 is at the center O1 of the second contact member 40.
When the center O2 of the pin 41 and the center of rotation of the rotating body 11 are located on a straight line, the contact members 39, 40
Is set to be smaller than the thickness of the fiber bundle at the entrance.

Next, the operation of the above-configured apparatus will be described. During the spinning operation, the drive belts 8 and 13 run in the same direction, and the rotor 6 and the rotating body 11 are driven to rotate in the same direction via the rotor shaft 7 and the shaft 10, respectively . Fiber維集bundle unit fiber bundle F from 6a is introduced in sequence stripped to yarn 36. The rotating speed of the rotating body 11 is rotated at a speed slightly lower than the speed at which the fiber bundle F is peeled off from the fiber collecting portion 6a (slightly higher than the rotating speed of the rotor 6).
Compressed air is supplied to the ejector 29 from a compressed air source via a compressed air supply pipe 34, and the yarn extraction passage 26 upstream of the ejector 29 (toward the rotor 6) is supplied with a more negative pressure than the negative pressure in the rotor 6. A suction action occurs. In this state, the spread fibers that have been spread by the action of the combing roller 21 and sent into the rotor 6 from the fiber transport channel 22 slide along the inner surface of the rotor 6 and are focused on the fiber bundle 6a that is the maximum inner diameter. Is done. The fiber bundle F collected by the fiber collecting portion 6a is smoothly removed from the fiber collecting portion 6a by the suction airflow toward the yarn path 36 generated based on the negative pressure in the yarn path 36, and is guided into the yarn path 36. .

The fiber bundle F is connected to a yarn Y drawn out through a yarn pipe 28 by a drawing roller (not shown), and is drawn as a yarn Y while being twisted by the rotation of the rotating body 11 as the yarn Y is drawn out. Is done. The twist applied to the yarn Y and the fiber bundle F propagates upstream from the end 28a of the yarn pipe 28 as a starting point. The fiber bundle F contacts the two contact members 39 and 40 provided at the entrance of the yarn path 36, and
Guided inside. At the time of spinning in which a fiber bundle exists between the contact members 39 and 40, the second contact member 40 is arranged such that the center O1 of the second contact member 40, the center O2 of the pin 41, and the rotation center of the rotating body 11 are aligned. There is no state. As a result, due to the centrifugal force acting on the second contact member 40 due to the rotation of the rotating body 11, the second contact member 40 is in a state where the center O1, the center O2, and the rotation center of the rotating body 11 are located on a straight line. (The clockwise direction in FIG. 7). That is, a force for pressing the fiber bundle F toward the first contact member 39 always acts on the second contact member 40 during spinning.

Accordingly, the fiber bundle F moving in the yarn path 36 is pressed against both contact members 39 and 40 at positions corresponding to the contact members 39 and 40. As a result, the rotation of the fiber bundle F is suppressed at the relevant portion, and the rotation of the yarn and the fiber bundle drawn out while being twisted propagates to the fiber bundle F upstream from the position corresponding to the contact members 39 and 40. Is suppressed. That is, twisting is performed at a position corresponding to both contact members 39 and 40. Therefore, the fiber bundle F is subjected to twisting in a state where the fiber is stretched by twisting the fiber at the time of twisting, and the fiber is twisted straight, the yarn strength is increased, and a yarn with good tightness is obtained. Can be

Further, since the second contact member 40 is rotatable about the pin 41, even if the thickness of the fiber bundle F slightly changes,
The contact member 40 is correspondingly pivoted about the pin 41 in a direction in which the gap x with the first contact member 39 increases.

As a twist propagation preventing portion provided at the entrance of the yarn path 36, a twist stopping member 43 which comes into contact with the fiber bundle F from one side as shown in FIG. In this case, among the fibers constituting the fiber bundle F, FIG.
In (a) and (b), the portion surrounded by the chain line, that is, the fiber on the side opposite to the side in contact with the twisting member 43 is in a state where it can move freely. As a result, the fibers in this portion can freely rotate in the direction of rotation of the yarn, resulting in an insufficient twisting effect, and a state in which fibers that are weakly wound around the outer layer of the yarn are present, resulting in a weaker tightening of the yarn. However, as described above, twisting is performed in a state in which both sides of the fiber bundle F are pressed by the pair of contact members 39 and 40, so that twisting is effectively performed, and a yarn with good tightness is obtained.

As described above, the two contact members 39,
Since the propagation of the twist to the upstream from the position corresponding to 40 is prevented, the fiber bundle F just peeled off from the fiber bundle 6a has low strength. However, since the rotating body 11 is actively driven at a predetermined speed independently of the rotor 6, the force acting on the fiber bundle F at the time of stripping is stabilized, and the fiber bundle F is smoothly stripped. Then, a suction airflow toward the yarn path 36 is generated by the action of the ejector 29, so that the fiber bundle F is stripped off and the fiber bundle F is introduced into the yarn path 36 smoothly.

Since the supply of compressed air to the ejector 29 is stopped at the time of splicing, the reverse insertion of the yarn Y from the yarn pipe 28 into the rotor 6 through the yarn drawing path 26 and the yarn path 36 is performed smoothly. Will be

The first contact member 39 may be provided with a pin protruding at an eccentric position and fitted and fixed to the rotating body 11 via the pin. Unlike the pin 41, the pin is strongly fitted to the rotating body 11 so that the pin cannot rotate by the centrifugal force acting on the first contact member 39 when the rotating body 11 rotates. In this case, the second contact member 40 has the center O
1. The value of the gap x when the center O2 and the rotation center of the rotating body 11 are arranged on a straight line can be arbitrarily and easily adjusted. Therefore, it becomes easy to adjust the value of the gap x to an optimum state for the thickness of the fiber bundle with the change of the spinning conditions.

(Embodiment 2) Next, a second embodiment will be described with reference to FIGS.
0 will be described. In this embodiment, the configuration of the twist propagation preventing portion provided at the tip of the rotating body 11 is different from that of the previous embodiment, and the other configuration is the same. A cylindrical first contact member 39 is fixed to one side of the housing recess 37 formed at the tip of the rotating body 11 as in the above embodiment. A support shaft 44 is provided on the opposite side of the yarn path 36 from the contact member 39. The support shaft 44 has a cylindrical second contact member 4.
5 is loosely fitted, and the contact member 45 is rotatable while its inner peripheral surface contacts the outer peripheral surface of the support shaft 44. When the center O1, the center O2 of the support shaft 44, and the center of rotation of the rotating body 11 are located on a straight line, the size of the gap x between the two contact members 39 and 45 is smaller than that of the fiber at the entrance. It is set to be smaller than the thickness of the bundle.

As shown in FIG. 10, during spinning, the second contact member 45 is moved from a state in which the center O1, the center O2 of the support shaft 44, and the rotation center of the rotating body 11 are located on a straight line. . Accordingly, the second contact member 45 is urged toward the first contact member 39 by the action of the centrifugal force with the rotation of the rotating body 11, and the fiber bundle F is pressed and gripped between the first contact member 39 and the first contact member 39. I do. As a result, the twist applied to the fiber bundle F is reliably stopped at the position corresponding to the two contact members 39 and 45 in the same manner as in the above embodiment, and the fiber bundle F is tensioned at the time of twisting and the fiber is stretched. In a twisted state.

In this embodiment, since the second contact member 45 is formed in a cylindrical shape, the manufacture is simpler than that of the contact member 40 of the above embodiment. Also, the contact member 45 is
Since the weight is lighter and the rolling resistance is smaller than that of the fiber bundle F, it is easy to follow the change in the thickness of the fiber bundle F.

(Embodiment 3) Next, a third embodiment will be described with reference to FIG. In this embodiment, a pair of contact members constituting the twist propagation preventing portion are provided so as to be movable together, and the distance from the other contact member is reduced by the centrifugal force when the rotating body 11 rotates. That is, a pair of support shafts 44 and 46 project from the housing recess 37, and cylindrical contact members 45 and 47 similar to the second embodiment are loosely fitted to the support shafts 44 and 46, respectively. In the device of this embodiment, both contact members 45,
47 is movable, so that the fiber bundle F
The ability to follow the change in the thickness of the sheet is further improved.

(Embodiment 4) Next, a fourth embodiment will be described with reference to FIGS. In this embodiment, the configuration of the movable contact member constituting the twist propagation preventing portion is different from the above embodiments. An accommodating recess 37 is formed at the tip of the rotating body 11 in the same manner as in each of the above embodiments, and a first contact member 39 is fixed to one side of the accommodating recess 37. Yarn path 3
A support shaft 48 is fixed to the back side of the rear end 6 so that one end protrudes from one surface of the rotating body 11. A lever 49 is rotatably supported at a protruding end of the support shaft 48 at a base end thereof. A second contact member 40 is rotatably supported at the tip of the lever 49 via a pin 41 projecting from the center of the second contact member 40. An arc-shaped long hole 50 (shown only in FIG. 13) is formed on the wall surface of the accommodation recess 37, and the pin 41 is supported by the lever 49 in a state penetrating the long hole 50. That is,
The second contact member 40 is rotatably supported by the tip of a lever 49 having a center of rotation near the center of the rotating body 11, and approaches the first contact member 39 with the rotation of the lever 49. It is arranged so that it can be separated.

Therefore, when the rotating body 11 rotates, the second contact member 40 is urged to rotate toward the first contact member 39 as shown in FIG. The bundle F is pressed and gripped from both sides. as a result,
The twist added to the fiber bundle F is prevented from propagating upstream from a position corresponding to the contact members 39 and 40. In the apparatus of this embodiment, the second contact member 40 can rotate around the pin 41 with the movement of the fiber bundle F.
It can be reliably prevented that an excessive gripping force acts on.

(Embodiment 5) Next, a fifth embodiment will be described with reference to FIGS. In this embodiment, a bulging portion 51 as a contact member is formed in a semi-cylindrical shape on one wall surface at the entrance of the yarn path 36. A leaf spring 52 as a contact member is fixed to the other wall surface. The leaf spring 52 also serves as urging means for urging the other contact member toward the one contact member. The bulging portion 51 and the leaf spring 52 constitute a twist propagation preventing portion. That is, in this embodiment, the fiber bundle F is gripped by the bulging portion 51 and the leaf spring 52 by the elastic force of the leaf spring 52, and the twist added to the fiber bundle F corresponds to the bulging portion 51 and the leaf spring 52. It is prevented from propagating upstream from the position. When the thickness of the fiber bundle F changes, the leaf spring 52 bends, thereby preventing an excessive gripping force from acting on the fiber bundle F. In the case of this embodiment, the production becomes easier as compared with the apparatuses of the above embodiments.

(Embodiment 6) A sixth embodiment will now be described with reference to FIGS. In this embodiment, the fiber converging portion 6 is provided on the peripheral surfaces of both contact members 39 and 40 in the first embodiment.
The difference is that grooves 39a and 40a are formed at positions opposing a. And, in this embodiment, the fiber bundle F is the groove 3
At positions corresponding to 9a and 40a, both contact members 3
It is introduced into the yarn path 36 while being gripped by 9, 40.
Therefore, in this embodiment, unlike the above embodiments, the fiber bundle F is compressed while the movement of the fiber bundle F in the axial direction of the contact members 39 and 40 is restricted, so that the fiber tension is higher and stronger. It becomes a thread. Also, the texture when made into cloth is improved.
The yarn path 3 of the fiber bundle F peeled off from the fiber converging portion 6a
The position of introduction into the fiber 6 is always a predetermined position corresponding to the grooves 39a, 40a, so that the stripping of the fiber bundle F from the fiber converging portion 6a is stabilized, and the spinning stability is improved.

(Embodiment 7) Next, a seventh embodiment will be described with reference to FIGS. This embodiment is significantly different from the above embodiments in that both of the contact members constituting the twist propagation preventing portion are immovable. As shown in FIG. 19, one side wall 53 is formed as a contact member so as to bulge so as to reduce the width of the yarn path 36 near the entrance. At a position facing the wall surface 53, a columnar contact member 54 is fixed so that a part thereof protrudes into the thread path 36. The gap between the wall surface 53 and the contact member 54 is set substantially equal to the thickness of the yarn Y. The entrance 36
a is formed in the shape of a truncated cone whose diameter increases toward the tip. The twist propagation preventing portion of this embodiment also presses the fiber bundle F on both sides. Therefore, the twist added to the fiber bundle F is reliably prevented from propagating upstream from the position corresponding to the wall surface 53 and the contact member 54.

It should be noted that the present invention is not limited to the above-described embodiments. For example, the second contact member 4 of the first embodiment may be used.
Instead of protruding the pin 41 at 0, a support shaft 44 is protruded from the accommodation recess 37 as shown in FIG. 21, and the second contact member 40 is rotatably supported on the support shaft 44 at an eccentric position. Alternatively, the fixed-side contact member 39 may be configured to be rotatable around the center thereof. Further, as shown in FIG. 22, the position of the support hole 42 is provided near the tip of the rotating body 11,
The center of gravity of the contact member 40 may be closer to the upstream of the yarn path 36. In this case, when the rotating body 11 rotates, the contact member 40 is rotated about the pin 41 in the direction of the arrow in FIG. 22 and the fiber bundle (not shown) passing between the contact member 39 and the contact member 39 is moved. To the side. In the seventh embodiment, as shown in FIG. 23, the shape of the entrance of the yarn path 36 is such that the diameter increases outward from the twist propagation preventing portion and extends obliquely in the rotation direction of the rotating body 11. It may be. In this case, the introduction of the fiber bundle F is performed more smoothly. Further, a mechanical seal or a labyrinth seal may be provided between the boss portion 18 and the rotating body 11, or another suction means may be connected to the yarn pipe as a negative pressure generator instead of the ejector. Further, the negative pressure generator may be omitted.

[0034]

As described in detail above, according to the present invention, the twist of the fiber bundle that is drawn while being twisted is prevented from being propagated to the upstream side from the twist propagation preventing portion. The fibers constituting the bundle are twisted into the yarn in a relatively straightened state, and a yarn having high tensile strength can be manufactured.

[Brief description of the drawings]

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

FIG. 2 is a partially enlarged sectional view.

FIG. 3 is a partial cross-sectional view showing a relationship between a rotor, a rotating body, a support disk, and a rotor shaft as viewed from an opening side of the rotor.

FIG. 4A is a schematic view showing a twisting action when one side of a fiber bundle is pressed by a contact member, and FIG. 4B is a view taken in the direction of arrow A in FIG.

FIG. 5 is a partial perspective view of the rotating body of the first embodiment as viewed from the opening side of the rotor.

FIG. 6 is a view omitting a cover plate showing a state of a contact member at the time of non-spinning.

FIG. 7 is a view showing a positional relationship of contact members during spinning.

FIG. 8 is a partial perspective view of the rotating body of the second embodiment viewed from the opening side of the rotor.

FIG. 9 is a view omitting a cover plate showing a state of a contact member at the time of non-spinning.

FIG. 10 is a view showing the positional relationship of contact members during spinning.

FIG. 11 is a diagram showing a positional relationship of contact members during spinning according to a third embodiment.

FIG. 12 is a partial perspective view of a rotating body according to a fourth embodiment as viewed from an opening side of a rotor.

FIG. 13 is a view omitting a cover plate showing a state of a contact member during spinning.

FIG. 14 is a partial perspective view of the rotating body of the fifth embodiment viewed from the opening side of the rotor.

FIG. 15 is a view omitting a cover plate showing a state of a contact member during spinning.

FIG. 16 is a partial perspective view of the rotating body of the sixth embodiment as viewed from the opening side of the rotor.

FIG. 17 is a partial cross-sectional view showing a state of a contact member during non-spinning.

FIG. 18 is a partial sectional view showing the state of the contact member during spinning.

FIG. 19 is a partial cross-sectional view of the seventh embodiment in which a cover plate during spinning is omitted.

FIG. 20 is a view of the rotating body viewed from the entrance side of the yarn path.

FIG. 21 is a partial perspective view illustrating a twist propagation preventing portion according to a modified example.

FIG. 22 is a view corresponding to FIG. 6 and showing a twist propagation preventing unit according to another modification.

FIG. 23 is a diagram corresponding to FIG. 19 of a rotating body according to another modification.

[Explanation of symbols]

6 ... Rotor, 6a ... Fiber bundle part, 11 ... Rotating body, 26 ...
Thread pull-out passage, 27 ... navel, 28 ... yarn pipe,
29: ejector as negative pressure generator, 36: thread path,
37: accommodation recess, 39: first contact member constituting the twist propagation preventing portion, 40, 45 ... second contact member constituting the twist propagation preventing portion, 41 ... pin, 52 ... leaf spring as contact member, 53: wall surface as contact member, F: fiber bundle, Y ...
yarn.

──────────────────────────────────────────────────続 き 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-4-240228 (JP, A) JP-A Heihei 5-86512 (JP, A) JP-A-5-44120 (JP, A) JP-A-4-13070 (JP, U) JP-B-53-19696 (JP, B2) JP-B-50-31215 (JP, A) B1) Japanese Patent Publication No. 49-10295 (JP, B1) (58) Field surveyed (Int. Cl. ⁷ , DB name) D01H 4/08 D01H 4/40

Claims (3)

(57) [Claims] In a rotor having a fiber bundle where fibers supplied in an opened state are bundled, the rotor is actively driven independently of the rotor and at least a part of the fiber bundle is in the vicinity of the fiber bundle of the rotor. A rotating body having a shape facing and partly corresponding to the end of the yarn drawing path is provided on the same axis as the rotor, and the yarn guiding the fiber bundle from the vicinity of the fiber bundle to the position facing the yarn drawing path on the rotating body. A rotor type open-end spinning machine having a path and a twist propagation preventing portion having a pair of contact members for contacting the fiber bundle from both sides thereof at an end of the yarn path on a fiber collecting portion side. 2. The rotor type open-end spinning machine according to claim 1, wherein the twist propagation preventing portion includes an urging means for urging at least one contact member toward the other contact member. 3. At least one of a pair of contact members constituting the twist propagation preventing portion is movable, and
2. The rotor type open-end spinning machine according to claim 1, wherein the rotor is arranged so that a space between the rotating body and the other contact member is reduced by centrifugal force at the time of rotation of the rotating body.