JP5746069B2 - Spinning machine with ring - Google Patents

Description

  The present invention relates to a spinning machine having a ring, and more particularly, a spinning machine having a ring such as a ring spinning machine or a ring twisting machine that winds a yarn through a traveler that slides on a ring supported and supported by a ring rail. About.

  Generally, in this type of spinning machine, yarn is wound in a so-called filling building in which the ring rail is gradually raised while winding up and down during the machine operation to wind the yarn.

One of the problems of power saving and speeding up of the ring spinning machine is a problem of air friction power loss caused by air agitation of pipe yarn rotating at high speed.
Recently, the spinning speed of the ring spinning machine in the factory has reached 25000 rpm. When the pipe yarn rotates at such a high speed, the airflow around it is disturbed, and the rotational speed of the pipe yarn surface is reduced. A large air friction moment proportional to the square is applied. Therefore, especially when the pipe is full, the loss power reaches several tens of percent of the power of the entire spinning machine, and the improvement is desired.

  As one method for reducing this air friction loss power, there is known a method of covering a pipe yarn with a cylindrical cover having a smooth inner surface. When the pipe yarn rotates in free space, a turbulent boundary layer develops around it due to the shearing action of the surface, and the turbulent region extends over a wide range. When covering the pipe yarn with the cover, the air flow between the pipe yarn and the inner wall of the cover swirls, and at that time, the disturbance in the radial direction is regulated by the inner surface of the cover, so energy dissipation is mitigated and the friction stress acting on the pipe yarn surface is Reduced compared to free space.

  As for the effect of reducing the frictional stress, the narrower the gap between the cover and the tube thread, the more the case where the cover is installed over the entire region of the tube yarn longitudinal direction when the cover is installed in a partial region of the tube yarn longitudinal direction. It is known to be larger than that.

  Conventionally, a cylindrical separator having an appropriate distance from the periphery of the bobbin is arranged coaxially with the bobbin, and a ring (ring holder) that guides the traveler can be moved up and down along the inner surface of the separator. There has been proposed a soundproofing device that is attached to a ring rail so as to be able to move up and down integrally through an attachment member that passes through a slit that extends in the vertical direction (see Patent Document 1). The slit is covered with a Teflon (registered trademark) piece attached to the separator, and the attachment member moves by expanding a part of the Teflon (registered trademark) piece.

JP 50-141 A

  Although the separator of patent document 1 is provided for the purpose of soundproofing, since the cylindrical separator is arranged coaxially with the periphery of the bobbin at an appropriate interval, the effect of reducing the air friction loss power as a result. There is. And the slit is covered with the Teflon (trademark) piece so that the accompanying airflow accompanying rotation of a bobbin (pipe thread) may not leak from the slit formed in the separator. However, since the attachment member of the ring holder moves by expanding the Teflon (registered trademark) piece, fatigue of the Teflon (registered trademark) piece is likely to occur, and early replacement is necessary. Further, there is a possibility that a leakage flow from a gap in which the attachment member pushes and spreads the Teflon (registered trademark) piece is generated, and the swirling flow in the separator is disturbed.

  The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a member for covering the slit with a leakage flow from the slit provided in the cover for reducing the air friction loss power accompanying the rotation of the pipe yarn. An object of the present invention is to provide a spinning machine having a ring that can be suppressed without being provided and can reduce power loss of the spinning machine.

In order to achieve the above object, the invention according to claim 1 is a spinning machine having a ring that winds a yarn through a traveler that slides on a ring that is supported by a ring rail and moves up and down. The cover is supported by the base frame and covers the periphery of the pipe thread and the anti-node ring inserted into the spindle. The cover is formed with a slit that allows movement of a support portion that supports the ring on the ring rail so that the ring and the anti-node ring can move inside the cover by raising and lowering the ring rail. When the tube thread is rotated, when the airflow in the cover passes through a position corresponding to the slit, a drifting portion is provided to deflect the airflow toward the inside of the cover.

  In the present invention, since the cover that covers the periphery of the pipe thread that rotates integrally with the spindle is provided, the power of air friction loss accompanying the rotation of the pipe thread is reduced. Also, an air flow swirling between the pipe yarn and the inner surface of the cover as the pipe yarn rotates from a slit formed in the cover to allow the support portion supporting the ring to the ring rail to move up and down together with the ring rail. However, leakage to the outside of the cover is prevented or suppressed by the action of the drift portion. The drift part has a function to deflect the airflow in the cover so that it moves toward the inside of the cover when passing through the position corresponding to the slit, and the airflow leaks from the slit to the outside of the cover without covering the slit. Is prevented or suppressed. Therefore, it is possible to suppress the power loss of the spinning machine by suppressing the leakage flow from the slit provided in the cover that reduces the air friction loss power accompanying the rotation of the tube yarn without providing a member that covers the slit.

  According to a second aspect of the present invention, in the first aspect of the present invention, the drifting portion has a distance from the central axis of the spindle to the inner surface of the cover at an upstream end portion of the airflow at a position corresponding to the slit. The distance at the downstream end of the airflow at the position corresponding to the slit is formed larger than the distance at. In this invention, the airflow swirling between the pipe yarn and the cover inner surface collides with the inner surface of the cover continuous with the downstream end of the airflow at the position corresponding to the slit when swirling near the slit. , It is prevented from flowing out of the cover. The drifting portion can be configured with a simple structure in which the shape of the cover is not a perfect cylinder formed with slits, but the shape near the slits is changed.

  The invention according to claim 3 is the invention according to claim 2, wherein the drifting portion is formed by a bent portion formed at an upstream end portion of the airflow at a position corresponding to the slit of the cover. ing. In the present invention, the structure of the drift portion is simpler.

  The invention according to claim 4 is the invention according to claim 1, wherein the drifting portion is formed at a downstream end of the airflow at a position corresponding to the slit of the cover, and the thickness of the cover The distance between the inner surface closer to the slit and the central axis of the spindle is changed to be larger than the distance from the inner surface far from the slit to the central axis of the spindle. In this invention, since the drifting portion is configured by changing the thickness of the cover in the portion sandwiching the slit, it is suitable for a cover that does not hinder even if the thickness is increased.

  The invention according to claim 5 is the invention according to claim 1, wherein the drifting portion is formed by a fin attached to an upstream end portion of the airflow at a position corresponding to the slit of the cover. Yes. In the present invention, the drift portion is configured by attaching fins formed separately from the cover to the cover without changing the shape of the cover in the vicinity of the cylindrical slit. Therefore, the drift portion can be formed without changing the shape of the cover.

  According to the present invention, the leakage flow from the slit provided in the cover that reduces the air friction loss power accompanying the rotation of the tube yarn is suppressed without providing a member that covers the slit, thereby reducing the power loss of the spinning machine. be able to.

(A) is a partial fracture | rupture schematic side view which shows support states, such as a cover and a ring, (b) is the schematic seen from the slit side which shows the relationship between a cover and a support part. The schematic perspective view which shows the relationship between a ring rail, a cover, and a ring. Sectional drawing which shows the relationship between a ring rail, a cover, and a ring. (A) is a schematic diagram for demonstrating the effect | action of a cover, (b) is a schematic diagram for demonstrating an effect | action in case there is no drift part. The graph which shows the comparison of the air friction loss power by the kind of cover. (A) is sectional drawing of the cover of another embodiment, (b) is sectional drawing of the cover of another embodiment. (A) is sectional drawing of the cover of another embodiment, (b) is sectional drawing of the cover of another embodiment. (A) is a top view which shows the support state of the cover of another embodiment, (b) is the partial fracture | rupture schematic seen from the slit side, (c) is the slit which shows the cover of another embodiment, and its support state. The partial fracture | rupture schematic seen from the side, (d) is a model top view.

Hereinafter, an embodiment in which the present invention is embodied in a ring spinning machine will be described with reference to FIGS.
As shown in FIG. 1 (a), a spindle 12 is rotatably supported on a spindle rail 11 constituting a machine frame, and is rotated by a drive mechanism (not shown). A draft part 13 (only the front roller is shown) is disposed above the spindle 12.

  The ring rail 14 is moved up and down by a known lifting mechanism. The ring 16 that guides the traveler 15 is supported by the ring rail 14 via a support portion 17 so that the center of the ring 16 can move up and down coaxially with the spindle 12.

  An anti-node ring (balloon control ring) 18 corresponding to each ring 16 is provided above the ring rail 14 so as to be able to move up and down in synchronization with the ring rail 14. Above the anti-node ring 18, a snell wire 20 attached to the lappet 19 corresponding to each ring 16 is provided so as to be able to move up and down in synchronization with the ring rail 14. The ring 16 moves up and down at a position corresponding to the pipe thread 21 inserted into the spindle 12 and rotating with the spindle 12 during the winding operation, and the anti-node ring 18 is connected to the upper part of the pipe thread 21 until the middle of the winding operation. The corresponding position is raised and lowered, and the position above the pipe yarn 21 is raised and lowered from the middle of the winding operation. Further, the snell wire 20 always moves up and down above the tube yarn 21.

  As shown in FIGS. 1A and 1B, a substantially cylindrical cover 22 that covers the periphery of the tube thread 21 inserted into the spindle 12 is supported on the spindle rail 11 via a support member 23. ing. The support member 23 has a cylindrical portion 23a. As shown in FIG. 2, the cover 22 passes through holes 14 a formed at positions corresponding to the respective spindles 12 of the ring rail 14, and as shown in FIG. It is detachably fitted and fixed to the cylindrical portion 23a.

  The cover 22 is formed with a slit 24 that allows movement of the support portion 17 that supports the ring 16 on the ring rail 14 so that the ring 16 can move inside the cover 22 as the ring rail 14 moves up and down. As shown in FIG.1 (b), the main part of the slit 24, ie, the part except the upper end side and lower end side of the cover 22, has a constant width over the whole length, Preferably it is formed in width 5-10mm. The shape of the upper end of the cover 22 is formed in a smooth shape so that the yarn Y from the snell wire 20 to the anti-node ring 18 is not caught on the upper portion of the slit 24. Further, around the spindle 12, there are a belt constituting a driving mechanism of the spindle 12, a brake for stopping the spindle 12 at the time of splicing, and the like, so that the cylindrical portion 23a of the support member 23 and the lower end portion of the cover 22 are provided. Notches are provided to avoid interference with these.

  When the cover 22 is removed, the cover 22 can be smoothly pulled to the operator side without the thread Y connected to the pipe thread 21 from the support part 17 or draft part 13 of the ring 16 interfering with the slit. As described above, the slit 24 is fitted and fixed to the cylindrical portion 23a of the support member 23 so as to be on the side opposite to the operator.

  The support portion 17 of the ring 16 is formed thinner (thinner) than the slit width, and is attached to the ring rail 14 so that the cover 22 and the ring 16 do not come into contact when the ring rail 14 moves up and down. Further, since the anti-node ring 18 also moves up and down the upper part of the cover 22 until the middle of the winding operation, the support portion 18a of the anti-node ring 18 is also formed narrower than the slit width.

  The cover 22 includes a drift portion 25 that deflects the airflow in the cover 22 toward the inside of the cover 22 when the airflow in the cover 22 passes through a position corresponding to the slit 24 when the tube thread 21 rotates. In this embodiment, as shown in FIG. 3, the drifting portion 25 has a distance from the central axis O of the spindle 12 to the inner surface of the cover 22 as a distance L1 at the upstream end 22 a of the airflow at a position corresponding to the slit 24. Thus, the distance L2 at the downstream end 22b of the airflow at the position corresponding to the slit 24 is formed larger. In this embodiment, the shape of the cross section perpendicular to the central axis of the cover 22 is such that the spiral is substantially one round, that is, the distance from the central axis O of the spindle 12 to the inner surface of the cover 22 is the upstream end of the cover 22. The cover 22 is formed so as to gradually increase from 22a toward the downstream end 22b.

  When a cylindrical cover is placed on a long and slender rotating body, the relationship between the gap and the air frictional power is such that the larger the gap, the larger the power. When it is narrowed, it is known that the shear force due to viscosity increases and the air friction power increases. However, in the case of the tube yarn 21, fluff is present on the surface thereof, so that the air friction moment becomes larger than that in the case of a rotating body with a smooth surface, and when the gap is narrowed, specifically, less than 10 mm. Then, the fluff comes into contact with the cover, resulting in a decrease in yarn quality and an increase in power. Therefore, it is ideal that the appropriate value of the inner diameter of the cover 22 is selected in a range that does not contact the fluff, but the ring 16 is interposed between the tube yarn 21 and the cover 22, so that the ideal value is ideal. The diameter cannot be selected, and is selected so that the inner diameter of the cover 22 is slightly larger than the outer diameter of the ring 16.

  Around the spindle 12, there are a belt constituting the drive mechanism of the spindle 12, a brake for stopping the spindle 12 when the yarn is spliced, and the like, so that the cylindrical portion 23a of the support member 23 interferes with them. There are cutouts to avoid.

Next, the operation of the ring spinning machine configured as described above will be described.
When the spinning machine performs the winding operation, the yarn Y sent from the draft part 13 is wound around the bobbin B through the snell wire 20, the anti-node ring 18 and the traveler 15, and the tube yarn 21 is formed. In order to perform winding in a so-called filling building, during the winding operation, the ring rail 14 gradually rises while repeating up and down movement. The rotational speed of the tube thread 21 that rotates integrally with the spindle 12 is 20000 to 25000 rpm.

  When the tube yarn 21 rotates at such a high speed, if there is no cover 22, the airflow around the tube yarn 21 is disturbed and the power loss increases. However, by providing the substantially cylindrical cover 22 that covers the periphery of the pipe yarn 21, the airflow between the pipe yarn 21 and the inner surface of the cover 22 turns, and the friction stress acting on the surface of the pipe yarn 21 is caused by the cover 22. Compared to the case without it.

  In the ring spinning machine, since the ring 16 moves up and down along the periphery of the tube yarn 21 together with the ring rail 14, the slit 24 that allows passage of the support portion 17 that supports the ring 16 on the ring rail 14 is covered. 22 should be formed. However, in the configuration in which the slit 24 is simply formed in the cylindrical cover 22, as shown in FIG. 4B, a part of the swirling airflow accompanying the rotation of the tube thread 21 is caused by the upstream end 22 a of the cover 22. It peels from the inner surface of the cover 22 and collides with the downstream end 22b, branches to the outside of the cover 22 and becomes a leakage flow and leaks from the slit 24 to the outside of the cover 22. When the collision and leakage of the airflow occur, the turbulence of the swirling airflow in the gap increases and the air friction moment increases.

  However, in this embodiment, the cover 22 has a drifting portion 25 that deflects the airflow in the cover 22 toward the inside of the cover 22 when the airflow in the cover 22 passes through a position corresponding to the slit 24 when the tube thread 21 rotates. I have. Then, the drifting portion 25 has a spindle 12 at the downstream end 22b of the cover 22 from the distance L1 from the central axis O of the spindle 12 to the inner surface of the cover 22 at the upstream end 22a of the cover 22 at a position corresponding to the slit 24. The distance L2 from the central axis O to the inner surface of the cover 22 is formed larger. Therefore, as shown in FIG. 4A, a part of the swirling airflow accompanying the rotation of the tube yarn 21 is peeled off from the inner surface of the cover 22 at the upstream end 22a of the cover 22 at a position corresponding to the slit 24. In addition, the collision with the downstream end portion 22b is avoided, and branching to the outside of the cover 22 to become a leakage flow is prevented or greatly suppressed.

  FIG. 5 shows a comparison of the power reduction effect of the cover 22 as a ratio with respect to a case where the air friction power loss without a cover as a reference is 100%. In FIG. 5, a is a cover having a slit and a drift portion, b is a cover having a slit and no drift portion, c is a cylindrical cover having no slit, and d is a test result without a cover.

The spinning conditions were as follows: spindle rotation speed: 25000 rpm, tube yarn diameter: Φ30.5, cover inner diameter: Φ52, yarn type: 100% cotton.
As shown in FIG. 5, in the cylindrical cover with no slit of c, the power improvement is 30 to 40% in the full yarn, depending on the number of rotations, fluff length, and yarn count. In addition, the cover with the slit b and without the drifting portion is greatly improved in power as compared with the cover without the cover d, but does not reach the cylindrical cover without the slit c. The unreasonable cause is the collision and leakage of airflow at the slit. In order to reduce this, the cover “a” provided with the drifting portion was slightly less than the cylindrical cover “c” without slits, but almost the same power reduction effect was obtained.

According to this embodiment, the following effects can be obtained.
(1) The ring spinning machine is a spinning machine that winds the yarn Y through a traveler 15 that slides on a ring 16 that is supported by the ring rail 14 and moves up and down. A cover 22 that covers the periphery of the pipe yarn 21 that is supported by the spindle rail 11 that constitutes the machine frame and that is inserted into the spindle 12 is provided. The cover 22 is formed with a slit 24 that allows movement of the support portion 17 that supports the ring 16 on the ring rail 14 so that the ring 16 can move inside the cover 22 by raising and lowering the ring rail 14. When the airflow in the cover 22 passes through a position corresponding to the slit 24 during rotation of the cover 21, a drifting portion 25 that deflects the airflow toward the inside of the cover 22 is provided. Therefore, the leakage flow from the slit 24 provided in the cover 22 that reduces the air friction loss power accompanying the rotation of the tube yarn 21 is suppressed without providing a member that covers the slit 24, thereby reducing the power loss of the spinning machine. be able to.

  (2) The drifting portion 25 has a distance from the central axis O of the spindle 12 to the inner surface of the cover 22 at a position corresponding to the slit 24 from a distance L1 at the upstream end 22a of the airflow at a position corresponding to the slit 24. The distance L2 at the downstream end 22b of the airflow is formed larger. Therefore, when the airflow swirling between the pipe yarn 21 and the inner surface of the cover 22 swirls near the slit 24, the airflow on the inner surface of the cover 22 continuing to the downstream end 22 b of the airflow at a position corresponding to the slit 24. By colliding, it is prevented from flowing out of the cover 22. And the drift part 25 can be comprised by the simple structure that the shape of the cover 22 is not what formed the slit 24 in the perfect cylinder but the shape of the vicinity of the slit 24 is changed.

  (3) The cover 22 has a cross-sectional shape orthogonal to the central axis of the cover 22 that is substantially one round of the spiral, that is, the distance from the central axis O of the spindle 12 to the inner surface of the cover 22 is upstream of the cover 22. It forms so that it may become large gradually as it goes to the downstream end part 22b from the edge part 22a. Therefore, the airflow swirling between the tube thread 21 and the inner surface of the cover 22 is smoothly deflected so as to go to the inside of the cover 22 at a position corresponding to the slit 24.

  (4) The cover 22 is detachably fixed to the machine base frame, in this embodiment, the spindle rail 11. Therefore, by performing the work with the cover 22 removed at the time of doffing, yarn splicing, cleaning, etc., it becomes easy to perform those work.

  (5) The cover 22 is supported by the spindle rail 11 so that the slit 24 is located on the opposite side of the operator (operator). Therefore, the cover 22 can be smoothly pulled out to the operator side without the yarn Y connected to the pipe yarn 21 from the draft part 13 through the traveler 15 or the support portion 17 of the ring 16 contacting the slit 24.

The embodiment is not limited to the above, and may be embodied as follows, for example.
As shown in FIG. 6A, the drift portion 25 may be configured by forming a bent portion 26 extending inward of the cover 22 at the upstream end portion 22 a of the cover 22. In this case, the distance from the central axis O of the spindle 12 to the inner surface of the cover 22 is the same except for the bent portion 26. Also in this case, the distance L2 at the downstream end 22b of the airflow at the position corresponding to the slit 24 is larger than the distance L1 at the upstream end 22a of the airflow at the position corresponding to the slit 24. Therefore, even if a part of the swirling airflow accompanying the rotation of the tube yarn 21 peels from the inner surface of the cover 22 at the upstream end 22a of the cover 22 at a position corresponding to the slit 24, it collides with the downstream end 22b. It is avoided or greatly prevented from branching to the outside of the cover 22 and becoming a leakage flow. Further, in this embodiment, the structure of the cover 22 is simplified as compared with the above embodiment.

  As shown in FIG. 6B, the thickness L3 of the downstream end 22b of the cover 22 at a position corresponding to the slit 24 is a distance L3 from the inner surface closer to the slit 24 to the central axis O of the spindle 12. However, the drift portion 25 may be formed so as to be larger than the distance L4 from the inner surface far from the slit 24 to the central axis O of the spindle 12. In this case as well, even if the upstream end 22a of the cover 22 is peeled off from the inner surface of the cover 22, the collision with the downstream end 22b is avoided, and the cover 22 branches to the outside. Therefore, the leakage flow is prevented or greatly suppressed. This configuration is suitable for a thick material because of the material of the cover 22.

  As shown in FIG. 7A, the shape of the cover 22 main body is a cylindrical shape having a slit 24, and a drifting fin 27 27 is attached to the upstream end 22a at a position corresponding to the slit 24 of the cover 22, thereby The unit 25 may be configured. In this case as well, even if the upstream end 22a of the cover 22 is peeled off from the inner surface of the cover 22, the collision with the downstream end 22b is avoided, and the cover 22 branches to the outside. Therefore, the leakage flow is prevented or greatly suppressed.

  As shown in FIG. 7B, the drift portion 25 may be configured by forming the slit 24 of the cover 22 in a shape extending obliquely toward the downstream side in the swirl direction of the airflow. This embodiment is also suitable when the cover 22 is made of a thick material, as in the embodiment shown in FIG.

  The inner surface of the downstream end 22b of the airflow at the position corresponding to the slit 24 from the distance from the inner surface of the upstream end 22a of the airflow at the position corresponding to the slit 24 of the cover 22 to the central axis O of the spindle 12. A curved surface portion in which the distance from the center axis O of the spindle 12 gradually increases may be provided. In this case, the airflow is deflected more smoothly than in the case where the bent portion 26 is provided.

  The structure in which the cover 22 is detachably supported on the spindle rail 11 is not limited to the configuration in which the lower end portion of the cover 22 is fitted to the cylindrical portion 23 a of the support member 23. For example, as shown in FIGS. 8A and 8B, a plurality of (for example, two) props 28 with pointed tips are erected on the spindle rail 11. In addition, an attachment portion 29 having a hole 29a into which the support column 28 can be inserted may be formed at the lower outer surface of the cover 22, and the cover 22 may be supported in a state where the support column 28 is inserted into the hole 29a.

  In addition, during the winding operation, the cover 22 does not move, and no external force acts except for the influence of the air reaction force and the machine base vibration accompanying the rotation of the spindle 12. Therefore, a complicated member is not required for the support, and the support is not limited to the above-described structure. For example, fixing by a magnet, a method using a negative pressure of a pneumatic device, support by a spring presser, and the like can be used, and there is an advantage that a small operating force is required for attaching and detaching the cover 22. In addition, when mounting and dismounting is automated, there is an advantage that a relatively simple mechanism is obtained.

  The cover 22 is supported so as to cover almost the entire length of the pipe thread 21, and has a structure having a slit 24 that allows the support portion 17 that supports the ring 16 to move up and down integrally with the ring rail 14. It is sufficient that the drift portion 25 is provided, and the cover 22 does not need to be fixed to the machine base frame. For example, as shown in FIGS. 8 (c) and 8 (d), the slit 24 is formed so as to extend obliquely, and the cover 22 can be rotated to a predetermined position with respect to the spindle rail 11 via a bearing 30 and a support member 31. To support. And it is good also as a structure which the cover 22 rotates and the ring 16 raises / lowers by the support part 17 of the ring 16 sliding along the slit 24 corresponding to raising / lowering of the ring rail 14. FIG. A metal bearing is used as the bearing 30, and the bearing 30 and the support member 31 are provided with notches 30 a and 31 a in the elevation range of the support portion 17 so that the support portion 17 does not interfere with the bearing 30 and the support member 31. It has been.

○ The cover 22 does not necessarily need to be detachably supported. However, the detachable support makes it easier to perform operations during doffing, piecing, cleaning, and the like.
The cover 22 is not limited to the spindle rail 11 and may be supported via a bracket on a machine frame other than the spindle rail 11.

(Circle) You may apply to not only a ring spinning machine but the spinning machine which has a ring, for example, a ring twisting machine.
The following technical idea (invention) can be understood from the embodiment.

  (1) In the invention according to any one of claims 1 to 5, the cover is disposed so that the slit faces the outside of the machine base.

  O ... center axis, Y ... thread, L1, L2, L3, L4 ... distance, 11 ... spindle rail as machine base frame, 12 ... spindle, 14 ... ring rail, 15 ... traveler, 16 ... ring, 17, 18a ... Support part, 21 ... pipe yarn, 22 ... cover, 22a ... upstream end, 22b ... downstream end, 24 ... slit, 25 ... drifting part, 26 ... bent part, 27 ... fin.

Claims (5)

A spinning machine having a ring that winds a yarn through a traveler that slides on a ring that is supported by a ring rail and moves up and down,
A cover that is supported by the machine frame and covers the periphery of the pipe thread and the anti-node ring inserted into the spindle, the ring and the anti-node ring on the inside of the cover by raising and lowering the ring rail A slit that allows movement of a support portion that supports the ring on the ring rail is formed, and when the airflow in the cover passes through a position corresponding to the slit when the tube thread rotates. And a drifting portion for deflecting the cover toward the inside of the cover.   The drift portion has a distance from the center axis of the spindle to the inner surface of the cover at a downstream end of the airflow at a position corresponding to the slit, from a distance at an upstream end of the airflow at a position corresponding to the slit. The spinning machine having a ring according to claim 1, which is configured by forming a larger distance in a portion.   The spinning machine having a ring according to claim 2, wherein the drift portion is formed by a bent portion formed at an upstream end portion of the airflow at a position corresponding to the slit of the cover.   The drift portion is formed at the downstream end of the airflow at a position corresponding to the slit of the cover, and the thickness of the cover is determined from the inner surface closer to the slit to the center axis of the spindle. The spinning machine having a ring according to claim 1, wherein the diameter is changed so as to be larger than a distance from an inner surface far from the slit to a central axis of the spindle.   The spinning machine having a ring according to claim 1, wherein the drift portion is formed by fins attached to an upstream end portion of the airflow at a position corresponding to the slit of the cover.