JPH08311727A - Rotor of rotor-type open end fine spinning machine and its production - Google Patents

Abstract

PURPOSE: To enable the subject rotor to be manufactured without the processing need of cutting a fiber bundling groove so as to easily conduct the precise processing and uniform surface treatment of the groove. CONSTITUTION: An outer rotor 2 is made up of two components, i.e., a gathering surface constitutive component 20 containing a gathering surface 20a onto which opened fibers carried into the outer rotor 2 are temporarily gathered and a bottom side constitutive component 21 containing a bottom side 21a communicating with the bottom side of the outer rotor 2 through sandwiching a fiber bundling groove 15. The two components 20, 21 are so designed that the respective cut surfaces 20b, 21b are continued to the tip of the groove 15 and mutually engagedly fixed through pressing into each other so as to come into mutual firm contact. The fiber bundling groove 15 is provided deeply as compared to both the gathering surface 20a and bottom side 21a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotor of a rotor type open end spinning machine and a method for manufacturing the same.

[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 transportation passage (fiber transportation 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 drawn out while being twisted, and at the same time twisted by the rotation of the rotor to become a yarn, which is wound on a bobbin as a package.

As shown in FIG. 11, for the rotor of the open-end spinning machine, the inner surface of the peripheral wall 52 of the rotor 51 is linear from the fiber concentrating portion 53 having the largest inner diameter toward the opening and bottom of the rotor 51. Two extending wall surfaces 52a, 5
Some are composed of 2b. In the case of the fiber converging portion 53 of this shape, the angle formed by both wall surfaces 52a and 52b is relatively large, and the regulation (friction) by the fiber concentrating portion 53 with respect to the fiber bundle converged in the fiber concentrating portion 53 is weak, so that spinning is performed. The thread quality is not very good. Therefore, as shown in FIG. 12 (a), a wall 52a connected to the opening side of the rotor 51 as a fiber converging portion, and a groove 54 formed in the peripheral wall 52 from the wall 52b connected to the bottom side, 12
As shown in (b), there is a rotor 51 in which a groove 54 is formed on the inner circumference of the bottom.

Further, in Japanese Patent Laid-Open No. 51-67427, for the purpose of easily cleaning impurities such as real dust and leaf dust accumulated in a rotor (rotary spinning chamber), FIG.
As shown in FIG. 3, the rotary spinning chamber (rotor) is connected to the upper rotor 5.
There is proposed an open-end spinning frame which can be divided into 5 and a lower rotary body 56. The lower rotary body 56 is moved up and down between the cleaning position (lowering position) shown in FIG. 13 and the spinning position (upward position) above it by the action of pneumatic driving means (not shown). A flange 55a is formed on the upper rotating body 55, and the upper rotating body 55 is rotated by the compressed air jetted from the journal nozzle 57.
It is held in a position that coincides with the axis of 8.

During the spinning operation, the lower surface of the upper rotary body 55 contacts the flange 56a of the lower rotary body 56 and is pressed by the lower rotary body 56 by the action of the compressed air injected from the nozzle 59. It is rotated integrally with 56. At the time of cleaning, the lower rotor 56 is placed in the lowered position,
The upper rotary body 55 is held at a position separated from the lower rotary body 56 by the force of the compressed air jetted from the nozzle 60 toward the flange 55a, and the impurities in the rotary spinning chamber are discharged from between the flanges 55a and 56a. It

[0006]

Problems to be Solved by the Invention FIGS. 12 (a) and 12 (b)
In the case of the rotor 51 in which the groove 54 is formed as the fiber converging portion as shown in FIG. 5, the yarn quality is improved, but it takes time to manufacture the rotor 51 including the processing of the groove 54, and the groove 54
However, there is a problem that the surface treatment is difficult. This is because the groove 54 is formed in the shape of an acute-angled triangle, and the width of its open end is narrow. As a result, when a surface treatment such as plating or ion plating is performed, the treatment is not uniformly performed to the inside of the groove 54. In order to improve the thread quality, it is important that the shape of the groove 54 is the same over the entire circumference. Further, when the groove 54 changes its shape due to abrasion due to friction with the fibers, yarns having different yarn qualities are spun, and thus the rotor 5
1 is preferably excellent in wear resistance. In recent years, since the rotational speed of the rotor during spinning operation has been increased, wear resistance of the rotor has become more important. Therefore, in the conventional product whose surface treatment is difficult, it is necessary to form the entire rotor with a material having excellent wear resistance, and there is a problem that cutting of the groove 54 becomes more difficult.

Japanese Unexamined Patent Publication (Kokai) No. 51-67427 discloses a structure in which the rotor is divided into two. The purpose is to facilitate cleaning of the inside of the rotor, and the upper rotor 55 and the lower rotor are rotated. The body 56 is frequently moved between the open position and the closed position (spinning position). Then, both rotating bodies 55,
Reference numeral 56 is a configuration in which the closed state is maintained by the force of the compressed air, and the predetermined closed state cannot be maintained without the action of the compressed air. That is, in this device, little consideration is given to maintaining the shape of the groove 54, which is important for the quality of the spun yarn, in a constant state, and to facilitate the processing and surface treatment of the groove 54. Is not touched at all.

The present invention has been made in view of the above problems, and an object thereof is to easily perform precise processing and uniform surface treatment of the fiber focusing groove, and to cut the fiber focusing groove. It is an object of the present invention to provide a rotor-type open-end spinning frame rotor that can be manufactured without performing the process, and a manufacturing method thereof.

[0009]

In order to achieve the above-mentioned object, in the invention according to claim 1, a collecting surface for collecting the spread fibers transported in the rotor, and a maximum inner diameter of the collecting surface. In a rotor of a rotor-type open-end spinning machine having a fiber converging groove formed at a position continuous with a portion, a first surface forming the fiber converging groove is integrated with a collecting surface component including the collecting surface. A plurality of parts configured by dividing the rotor so that the fiber focusing groove is divided into two from the tip thereof so that the second surface forming the fiber focusing groove is integrated with the bottom side surface component including the bottom side surface Was fixed by fitting.

According to the second aspect of the invention, the collecting surface component and the bottom side component are made of different materials. According to a third aspect of the present invention, in the first or second aspect of the invention, the collecting surface component and the bottom side surface component have a dividing surface continuous with a surface forming the fiber focusing groove of the rotor. It is formed so as to extend parallel to the rotation axis.

According to the fourth aspect of the invention, a collecting surface for collecting the spread fibers transported into the rotor, and a fiber converging groove formed at a position continuous with the maximum inner diameter portion of the collecting surface. A method of manufacturing a rotor of a rotor type open-end spinning machine, comprising: a collecting surface including a first surface for forming a fiber collecting groove by dividing the fiber collecting groove into two parts from a tip thereof. A second surface, which is formed integrally with the component and forms the fiber converging groove, is integrally formed with a bottom side surface component including the bottom side surface, and at least one of the respective parts and at least a surface of a portion in contact with the fiber After processing, the parts were assembled to manufacture the rotor.

[0012]

According to the invention described in claims 1 to 3, the rotor is constructed by fitting and fixing a plurality of parts, and the two surfaces forming the fiber focusing groove of the rotor are separately formed in the two parts. Has been done. Therefore, before assembling both parts, it is possible to easily perform precise processing and uniform surface treatment of the two surfaces, and to form the fiber focusing groove of the assembled rotor to a desired accuracy and hardness. It will be easy. Since the fiber focusing groove is formed to have a desired accuracy and hardness, the fiber bundle focused in the fiber focusing groove is likely to be in a uniform state at any place, and the quality of spun yarn is improved.

Further, according to the second aspect of the present invention, it is possible to select a material suitable for each component, which facilitates weight reduction and cost reduction. According to the third aspect of the present invention, since the divided surface that is continuous with the surface forming the fiber converging groove is formed so as to extend parallel to the rotation axis of the rotor, the processing accuracy of the divided surface is such that the divided surface is the rotation axis. This is higher than when the surfaces are orthogonal to each other, and the accuracy of the fiber focusing groove when the both parts are assembled is improved.

According to a fourth aspect of the present invention, there is provided a collecting surface for collecting the opened fibers transported in the rotor, and a fiber converging groove formed at a position continuous with the maximum inner diameter portion of the collecting surface. In the case of manufacturing a rotor for a rotor type open-end spinning machine, the first surface forming the fiber focusing groove is integrally formed with the collecting surface component including the collecting surface. Also, the second surface forming the fiber focusing groove is formed integrally with the bottom side surface component including the bottom side surface of the rotor. Then, in the state of the collecting surface component and the bottom side component, at least one of the respective components is subjected to surface treatment of at least a portion in contact with the fiber, and then both components and, if necessary, a reinforcing component are assembled and the rotor is assembled. To manufacture.

[0015]

【Example】

(Embodiment 1) A first embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 1, publicly known (for example, JP-A-5-33226 and JP-A-5-4).
4119 gazette, etc.), an outer rotor 2 as a rotor is provided at the tip of a hollow rotor shaft 1 which is rotatably supported on a machine frame and is rotationally driven by a driving means (neither is shown). It is fitted and fixed so as to be integrally rotatable. A bearing 3 is fixed in a large diameter portion 1a formed at both ends (only one side is shown) of the rotor shaft 1, and a shaft 4 penetrating the rotor shaft 1 rotates coaxially with the rotor shaft 1 via the bearing 3. It is supported freely. An inner rotor 5 is fitted and fixed to the tip of the shaft 4 so as to be able to rotate integrally therewith, and a base end of the shaft 4 is in contact with a thrust bearing (not shown). The shaft 4 is rotationally driven in the same direction as the outer rotor 2 independently of the rotor shaft 1 by a known driving means.

A boss portion 7 is formed in the housing 6 disposed at a position facing the open side of the outer rotor 2 so as to project into the outer rotor 2. One end of a fiber transport channel 8 for guiding the fibers opened by a combing roller (not shown) into the outer rotor 2 is opened on the peripheral surface of the boss portion 7. A navel 9 is fixed at the center of the boss portion 7, and a spun yarn Y is provided at the center of the navel 9.
10 for guiding the yarn to the winding device (not shown)
Is open at one end. The yarn pipe 11 forming a part of the yarn drawing passage 10 is arranged so as to intersect with the center line of the navel 9, and the end portion 11a of the yarn pipe 11 near the navel 9 is the twisting start point of the yarn (fiber bundle F). Has become. Further, at a position facing the housing 6, a casing 12 that covers the outer rotor 2 is attached to the end surface of the housing 6 at an O position.
It is arranged in a state of being abutted via the ring 13.
The casing 12 is connected to a negative pressure source (not shown) via a pipe 14.

The inner rotor 5 is formed in such a shape that a part of its peripheral surface is extended to the vicinity of the fiber focusing groove 15 of the outer rotor 2 and one of the navel 9 is provided in the central portion on the side corresponding to the boss portion 7. A recess 16 is formed in which the part is loosely inserted. The inner rotor 5 is formed such that the radius of the maximum outer diameter portion is larger than the radius of the inner surface of the open end of the outer rotor 2. At the maximum outer diameter portion of the inner rotor 5, an opening 17 for introducing a fiber bundle from the vicinity of the fiber focusing groove 15 of the outer rotor 2 to the recess 16 is formed, and from the vicinity of the fiber focusing portion 15 to a position facing the yarn drawing passage 10. The fiber bundle F can be guided.

As shown in FIG. 2, a guide 18 having a substantially semi-cylindrical shape is provided near the fiber focusing groove 15 of the opening 17 and toward the rotational direction side of the inner rotor 5, and the guide 18 is guided to the yarn drawing passage 10. The guided fiber bundle F can be contacted from the rotation direction side of the inner rotor 5. Guide 1
A wall 19 having a wall surface 19a extending along the circular arc surface of the guide 18 is formed at a position facing the circular arc surface of 8. The tip of the wall 19 is formed so as to be located on the rotation direction side of the inner rotor 5 with respect to the arc surface of the guide 18.
The inner rotor 5 is integrally formed of a metal (for example, aluminum or aluminum alloy), and has a guide 18 and a wall 19.
A hard layer (not shown) such as a chromium plating layer and a titanium nitride layer having excellent wear resistance is formed on the surface of the portion by surface treatment such as plating and ion plating. The maximum outer diameter of the inner rotor 5 is formed larger than the inner diameter of the open end of the outer rotor 2.

The outer rotor 2 includes a collecting surface component 20 including a collecting surface 20a for temporarily collecting the spread fibers transported into the outer rotor 2, and a fiber collecting groove 15 between which the outer rotor 2 is sandwiched. It is composed of two parts, a bottom side surface component 21 including a bottom side surface 21a connected to the bottom side.
The collecting surface component 20 is formed such that a dividing surface 20b continuous with the first surface 15a forming the fiber converging groove 15 extends parallel to the rotor shaft 1 as the rotation axis of the outer rotor 2, and the collecting surface 20a. Are formed so that the diameter decreases as the distance from the first surface 15a increases.

The bottom side component 21 is the rotor shaft 1
The bottom plate 22 is formed with a fitting hole 22a that is fitted and fixed to the tip of the center of the bottom plate 22, and a cylindrical ring portion 23 that projects from the periphery of the bottom plate 22. A second surface 15b forming the fiber converging groove 15 is formed at the tip of the ring portion 23. The inner peripheral surface of the ring portion 23 constitutes a bottom side surface 21a, and the outer peripheral surface of the ring portion 23 is formed so as to extend parallel to the rotor shaft 1 and constitutes a divided surface 21b continuous with the second surface 15b. .

The collecting surface component 20 and the bottom side component 21 are fitted and fixed by press-fitting so that the divided surfaces 20b, 21b are in close contact with each other to form the outer rotor 2. In any case, the collecting surface 20a and the bottom side surface 21
Since the fiber converging groove 15 is formed in the deeper part than a, the groove 15 is difficult to be cut or surface-treated.

Since both components 20 and 21 are difficult to disassemble after they have been fitted and fixed once, in the case of the open-end spinning frame of this embodiment which cooperates with the inner rotor 5 for spinning,
When the outer rotor 2 is assembled, the inner rotor 5 is housed inside. Therefore, even if the maximum outer diameter of the inner rotor 5 is larger than the inner diameter of the opening end of the outer rotor 2, the inner rotor 5 remains inside the outer rotor 2.
Can be accommodated.

The collecting surface component 20 and the bottom side component 21 are made of the same material (for example, aluminum, aluminum alloy, steel, etc.). Where the fibers come into contact during the spinning operation, that is, the collecting surface 20a and the first surface 15a of the collecting surface component 20, and the second surface 15b of the bottom side surface component 21 are surface-treated, A hard layer (not shown) is formed on the surface to improve wear resistance. The surface treatment includes, for example, plating, ion plating, soft nitriding treatment and the like, which is appropriately selected depending on the material, but the soft nitriding treatment cannot be applied to an aluminum alloy. For plating, for example, chromium plating or nickel (N
There is dispersion plating using i) and using silicon carbide (SiC) or boron nitride (BN) as dispersed particles.

When manufacturing this outer rotor 2,
The collection surface component 20 and the bottom side surface component 21 are manufactured separately. For manufacturing, an appropriate method is selected from forging, plastic working, casting, powder metallurgy, and injection molding. Both parts 20 and 21 have no groove on their inner and outer surfaces,
Die-cutting becomes easy during casting, powder metallurgy, and injection molding.
Next, by a suitable treatment among surface treatments such as plating, ion plating, and soft nitriding treatment, the portions that come into contact with the fibers of both parts 20, 21; that is, the collecting surface 20a and the first surface 15a.
Also, a hard layer having abrasion resistance is formed on the surface of the second surface 15b. Since there is no groove on either surface, a hard layer is uniformly formed on each surface. The entire surface of both parts 20 and 21 may be surface-treated. After the surface treatment, the split surfaces 20b and 21b are pressed into each other to be in close contact with each other.
Are fitted and fixed. Then, the outer rotor 2 in which the fiber focusing groove 15 having a desired shape is formed by the first surface 15a and the second surface 15b that have been subjected to uniform surface treatment is manufactured.

Next, the operation of the apparatus configured as described above will be described. During the spinning operation, the outer rotor 2 is driven through the rotor shaft 1 and the shaft 4 by the action of the driving means.
And the inner rotor 5 are rotationally driven in the same direction. Unlike the rotation speed of the outer rotor 2, the inner rotor 5 rotates at the stripping speed of the fiber bundle F from the fiber focusing groove 15 (slightly higher than the rotation speed of the outer rotor 2). In this state, the spread fibers that have been spread by the action of the combing roller and sent into the outer rotor 2 from the fiber transport channel 8 are collected by the collecting surface 20 of the outer rotor 2.
It adheres to a and slides along the collecting surface 20a, and is converged in the fiber converging groove 15 which is the maximum inner diameter portion. The fiber bundle F focused in the fiber focusing groove 15 is a drawing roller (not shown).
Is connected to the yarn Y drawn through the yarn pipe 11, is peeled off from the fiber focusing groove 15 as the yarn Y is drawn, and is drawn as the yarn Y while being twisted by the rotation of the outer rotor 2. The twist applied to the yarn Y and the fiber bundle F is transmitted to the fiber focusing groove 15 of the outer rotor 1 starting from the end 11a of the yarn pipe 11.

The fiber bundle F is pulled out at a speed such that the stripping point P is on the rotation direction side of the inner rotor 5 with respect to the wall 19.
Since the fiber converging groove 15 is formed in a desired shape, the fiber bundle F converged in the fiber converging groove 15 becomes
It is in a preferable state when being twisted while being stripped from the fiber and in a state where it is regulated by the fiber focusing groove 15, and a uniform and high quality yarn is spun.

In this embodiment, the fiber bundle F stripped from the fiber collecting groove 15 is guided to the yarn drawing passage 10 while being in contact with the wall 19 and the guide 18. Therefore, the direction in which the fiber bundle F is pulled out near the stripping point (twisting point) P and the fiber bundle F that is focused in the fiber focusing groove 15
The angle formed by and, that is, the twisting angle is an obtuse angle. Then, the fiber bundle F, which is stripped from the fiber focusing groove 15 and is twisted, has a small path difference between the inside and the outside, and is twisted into the fiber bundle F with a substantially even force over the entire state 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.

(Second Embodiment) Next, a second embodiment will be described with reference to FIGS.
Follow the instructions below. In this embodiment, a large number of ventilation holes 24 for communicating the fiber focusing groove 15 with the outer surface of the outer rotor 2 are formed at positions corresponding to the fiber focusing groove 15 of the outer rotor 2 at predetermined intervals. The shape of the divided surface of the outer rotor 2 is different from that of the above embodiment. Other configurations are the same, and the same portions are denoted by the same reference numerals and detailed description thereof will be omitted.

As shown in FIG. 4, a large number of ventilation holes 24 are radially formed at predetermined intervals. The ventilation hole 24 is formed so that its cross-sectional area changes in two steps, and the fiber focusing groove 15
The slit 24a having a small cross-sectional area formed on the side and the large hole 24b having a large area formed on the outer peripheral side and having a circular cross-section are communicated with each other.

As shown in FIGS. 3 and 5, in the bottom side surface component 21, the inner diameter of the ring portion 23 changes in two steps, and the bottom plate 22 side is formed thick. Then, the second surface 15 is left in a state where the step surface 23a located on the plane orthogonal to the rotation axis of the outer rotor 2 is left in the step portion.
b is formed. The inner surface of the thin portion is formed so as to extend parallel to the rotation axis of the outer rotor 2 to form a part of the dividing surface 21b, and at the base end of the thin portion, a part thereof is flush with the step surface 23a. Large hole 24b so that it is located at
Are formed.

The collecting surface component 20 is formed so that its outer peripheral surface extends parallel to the rotation axis of the outer rotor 2 to form a part of the dividing surface 20b, and the end surface corresponding to the bottom side of the outer rotor 2 is formed. Dividing surface 20b continuous with the first surface 15a
Are formed with the same width as the step surface 23a. The large hole 2 is formed in the dividing surface 20b that abuts the step surface 23a.
4b, the recesses forming the slits 24a are formed respectively, and the slits 24a are formed by the recesses and the step surfaces 23a in a state where the collecting surface component 20 is assembled to the bottom side surface component 21. It is like this.
The recess has a rectangular cross section rather than a wedge shape, and can be easily processed with a rotary cutter. Further, even if there are recesses (grooves), since the cross-sectional shape is not wedge-shaped but has a shallow depth, the surface treatment is performed uniformly. Even if the air holes 24 are not uniformly formed, there is no problem because the air holes 24 are not essential to the surface treatment.

When this outer rotor 2 is used,
Since the vent hole 24 is formed so as to communicate with the bottom of the fiber focusing groove 15 formed in the maximum inner diameter portion of the outer rotor 2, the vent hole 24 is formed as the outer rotor 2 rotates at high speed.
In this case, an airflow is generated from the fiber focusing groove 15 side to the outside of the outer rotor 2 due to the self-exhausting action. Further, since the inside of the casing 12 is maintained in a depressurized state, the air flow toward the outside of the outer rotor 2 is also generated in the vent hole 24 by the action thereof. Due to the action of this air flow, the fiber bundle F focused in the fiber focusing groove 15 is pressed into the fiber focusing groove 15.

Accordingly, the fiber bundle F is twisted while being strongly pressed by the fiber collecting groove 15 at the stripping point P, the rotation of the fiber bundle F upstream from the stripping point P is suppressed, and the yarn appearance and the cloth are obtained. Sometimes fine-textured yarn is spun. When the fibers sliding on the collecting surface 20a of the outer rotor 2 toward the fiber focusing groove 15 reach the fiber focusing groove 15, the fibers are blown by the air flow.
It is pressed by and is restrained. Therefore, even if some twist is transmitted to the fiber bundle F upstream from the stripping point P, unlike the conventional case,
The fibers before becoming a fiber bundle will not loosely wind around the fiber bundle F in a state where there is no binding force. As a result, it is possible to prevent the appearance of the yarn from being disturbed and the texture of the fabric from being deteriorated.

(Embodiment 3) Next, the third embodiment embodied in the rotor of an ordinary open-end spinning frame without the inner rotor 5 will be described.
An embodiment will be described with reference to FIG. The rotor 25 is composed of a collecting surface component 20 and a bottom side surface component 21, and similarly to the first embodiment, the collecting surface component 20 is fitted and fixed to the outside of the bottom side surface component 21. This is the same as the first embodiment. However, in this embodiment, the fiber focusing groove 15
The divided surfaces 20b and 21b continuous with the first and second both surfaces 15a and 15b respectively extend in a direction orthogonal to the rotation shaft 26 of the rotor 25, and then are parallel to the rotation shaft 26 toward the bottom side of the rotor 25. It is formed to extend. The diameter of the fitting hole 22a is formed smaller than that in both the embodiments. Further, since the inner rotor 5 is not present, the angle formed by the collecting surface 20a with the plane orthogonal to the rotation axis is smaller than that in both the embodiments, and the fibers attached to the collecting surface 20a are formed into the fiber converging grooves 15. It becomes easy to slide to the side.

Also in the case of this rotor 25, the fiber focusing groove 15 can be accurately formed into a desired shape, and the fiber focusing groove 1
When the fiber bundle F bundled in No. 5 is twisted off while being stripped from the fiber bundle groove 15, it is in a preferable state and in a state regulated by the fiber bundle groove 15, and a uniform and high quality yarn is spun. Will be issued.

(Fourth Embodiment) Next, a fourth embodiment will be described with reference to FIG. The outer rotor 2 of this embodiment is largely different from the above-described embodiments in that the collecting surface constituent component 20 and the bottom side constituent component 21 are made of different materials. A metal with a small specific gravity (for example, aluminum),
The collecting surface component 20 made of resin or a composite material is fitted and fixed so as to be located inside the bottom side component 21 made of a material having high strength such as steel. The collecting surface component 20 is formed such that a dividing surface 20b continuous with the first surface 15a extends parallel to the rotor shaft 1 and toward the opening side of the outer rotor 2. Bottom side component 2
In No. 1, the wall thickness is formed in two steps, and the step surface forms the second surface 15b of the fiber focusing groove 15.

If the material having a small specific gravity has a high strength and the price is the same as steel, the outer rotor 2 may be entirely formed of the material. However, a composite material having a light weight and a high strength is expensive and expensive. A relatively cheap and light material has weak strength. If the outer rotor 2 is made of only a weak and light material, it is necessary to increase the wall thickness, and the outer rotor 2 cannot be made small. In this embodiment, since the collecting surface component 20 made of a light material is placed inside the bottom side component 21 made of a material having high strength, compared to the case where the whole is made of a material having high strength, The weight can be reduced without enlarging the outer rotor 2.

(Fifth Embodiment) Next, a fifth embodiment will be described with reference to FIGS. 8 and 9A and 9B. In this embodiment, since the inner rotor 5 can be replaced, the collection surface component 20 is detachably fixed to the bottom side component 21, which is different from the above embodiments. FIG.
Further, as shown in FIG. 9B, the bottom side surface component 21 has a step portion formed on the outer peripheral surface of the ring portion 23 serving as the dividing surface 21b. A plurality of holes 27 (for example, four holes) having a depth slightly larger than 1.5 times the diameter are formed at equal intervals in the dividing surface 21b, and the hole 27 shrinks by about half the diameter of the hole 27. An elastic body 28 having a possible shape is housed in a fitted state.
A hole 29 having a depth of 1/2 of the diameter is formed at a position corresponding to the hole 27 on the dividing surface 20b of the collecting surface component 20.
A hole 30 having a smaller diameter than the hole 29 is formed at the bottom of the plate 9 so as to communicate with the outer surface. Both parts 20 and 21 are slidably fitted and fixed, and the catching surface component 20 is prevented from coming off by a spherical hook 31 that is accommodated across both holes 27 and 29.

When assembling the two parts 20 and 21, the catching surface component 2 with the hook 31 housed in each hole 27.
0 into the bottom side component 21. A part of the spherical hooking body 31 protrudes from the hole 27, but more than 1/2 of the spherical hooking body 31 is located in the hole 27. Therefore, the collection surface component 20 should be pushed to the bottom side of the outer rotor 2. Thereby, the hooking body 31 compresses the elastic body 28 to enter the hole 27, and allows the collection surface component 20 to move. Then, when the hole 29 is arranged at a position corresponding to the hole 27, the elastic body 28 returns to the original state, and almost half of the hooking body 31 enters the hole 29, and the collecting surface component 20 comes off. It is held in a stopped state. When the outer rotor 2 is rotated during the spinning operation,
The latch 31 is pressed toward the hole 29 by the action of centrifugal force,
Half of the hooks 31 are securely held in the holes 29, and the collecting surface component 20 is held in a predetermined position.

When removing the collecting surface component 20 for replacement of the inner rotor 5 or the like, as shown in FIG. 9 (a), a tool in which screws 33 are provided at predetermined intervals on a ring-shaped support 32 34 is used. Then, the tool 34 is arranged at a position where each screw 33 corresponds to the hole 30, and the screw 33 is moved to the inside of the support body 32 so that the latching body 31 resists the elastic force of the elastic body 28 and the inside of the hole 29. Hold it discharged from the.
When the collection surface component 20 is moved along the shaft 4 in that state, the collection surface component 20 is removed.

The present invention is not limited to the above embodiments, but may be embodied as follows. (1) The fiber converging groove 15 does not necessarily have to be shaped so as to enter the circumferential wall of the rotor from both sides of the collecting surface 20a and the bottom side surface 21a. For example, as shown in FIG. 15a and the collecting surface 20a may be located on the same plane, or as shown in FIG. 10 (b), the fiber collecting groove 15 may be formed on the peripheral edge of the bottom portion. FIG.
As shown in (c) and (d), the first surface 15a of the fiber converging groove 15 is located above the outer surface of the outer rotor 2 due to the extension of the collecting surface 20a.
The shape may be located inside the.

(2) The outer rotor 2 used in the open-end spinning frame equipped with the inner rotor 5 and the rotor 25 used in the open-end spinning frame not equipped with the inner rotor 5 have the same function. Therefore, the rotor 25 having the same structure as the outer rotor 2 is formed by changing the size of the fitting hole 22a, or the outer rotor 2 having the same structure as the rotor 25 is formed by changing the size of the fitting hole 22a. May be.

(3) Outer rotor 2 and rotor 25
Collecting surface component 20 and bottom side component 2
The surface treatment of No. 1 may be performed on at least one of the parts 20 and 21 and at least on the portion in contact with the fiber, and only the first surface 15a of the fiber focusing groove 15 may be subjected to the surface treatment. This is because the fiber bundle F focused in the fiber focusing groove 15 is regulated in a state of being pressed against the first surface 15a by the centrifugal force, so that the friction on the first surface 15a is larger than that of other portions. Because it will be.

(4) The dividing surfaces 20b and 21b are not limited to the shape extending in the direction parallel or orthogonal to the rotation axis of the outer rotor 2 or the rotor 25, and may be tapered surfaces. (5) The outer rotor 2 and the rotor 25 may include a reinforcing component in addition to the collecting surface component 20 and the bottom side component 21.

Inventions other than those described in the claims that can be grasped from the respective embodiments and modifications will be described below together with their effects. (1) In the invention described in claim 2, as the material of the collecting surface component, one having a lower specific gravity than the material of the bottom side component is used. In this case, the weight can be reduced without increasing the diameter of the rotor.

[0046]

As described in detail above, the first to third aspects of the invention are described.
According to the invention described in (1), it is possible to easily perform precise processing and uniform surface treatment of the fiber focusing groove, and it is possible to manufacture the rotor without cutting the fiber focusing groove. Is improved.

According to the second aspect of the present invention, the material suitable for each component can be selected, and the weight reduction and the cost reduction can be facilitated. According to the third aspect of the present invention, since the divided surface that is continuous with the surface forming the fiber converging groove is formed so as to extend parallel to the rotation axis of the rotor, the processing accuracy of the divided surface is such that the divided surface is the rotation axis. It becomes higher compared to when it is set as an orthogonal plane,
The accuracy of the fiber focusing groove is improved when both parts are assembled.

According to the invention described in claim 4, precise processing of the fiber focusing groove and uniform surface treatment can be easily performed, and the rotor can be manufactured without cutting the fiber focusing groove. Become.

[Brief description of drawings]

FIG. 1 is a partial sectional view of an open-end spinning frame according to a first embodiment.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a partial sectional view of an open-end spinning machine according to a second embodiment.

4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a partial sectional view of an outer rotor.

FIG. 6 is a partial sectional view of an open-end spinning frame according to a third embodiment.

FIG. 7 is a partial sectional view of an open-end spinning frame according to a fourth embodiment.

FIG. 8 is a partial sectional view of an open-end spinning frame according to a fifth embodiment.

9A is a perspective view of a tool, and FIG. 9B is a partial cross-sectional view of an outer rotor.

FIG. 10 is a partial cross-sectional view of a modified example.

FIG. 11 is a sectional view of a conventional rotor.

FIG. 12 is a partial cross-sectional view of another conventional rotor.

FIG. 13 is a cross-sectional view of another conventional device.

[Explanation of symbols]

2 ... Outer rotor as rotor, 15 ... Fiber converging groove, 15a ... First surface, 15b ... Second surface, 20 ... Collection surface component, 20a ... Collection surface, 20b, 21b ... Dividing surface, 21 ... Bottom side component, 21a ... Bottom side, 23
a ... a stepped surface that constitutes a divided surface, 25 ... a rotor.

Claims (4)

[Claims] 1. A rotor-type open-end refiner having a collecting surface for collecting the opened fibers transported in the rotor, and a fiber focusing groove formed at a position continuous with the maximum inner diameter portion of the collecting surface. In a rotor of a spinning machine, a first surface forming a fiber converging groove is integrated with a collecting surface component including the collecting surface, and a second surface forming a fiber converging groove includes a bottom side surface component including a bottom side surface. A rotor of a rotor-type open-end spinning machine, which is configured by fitting and fixing a plurality of parts configured by dividing a rotor so as to divide the fiber focusing groove into two parts so as to be integrated with. 2. The rotor of an open-end spinning frame according to claim 1, wherein the collecting surface component and the bottom side component are made of different materials. 3. The collecting surface component and the bottom side surface component are formed such that a dividing surface continuous with a surface forming the fiber focusing groove extends parallel to the rotation axis of the rotor. Item 2. The open-end spinning machine rotor according to Item 2. 4. A rotor-type open-end refiner having a collecting surface for collecting the spread fibers transported in the rotor and a fiber converging groove formed at a position continuous with the maximum inner diameter portion of the collecting surface. A method for manufacturing a rotor of a spinning machine, wherein a first surface for forming a fiber focusing groove by dividing the fiber focusing groove into two from a tip thereof is formed integrally with a collecting surface component including the collecting surface. ,
The second surface forming the fiber converging groove is integrally formed with the bottom side surface component including the bottom side surface, and at least one of the respective parts is subjected to a surface treatment at least at a portion in contact with the fiber, and then each part. A method for manufacturing a rotor of a rotor-type open-end spinning frame, in which a rotor is assembled to manufacture a rotor.