WO2019155633A1

WO2019155633A1 - Spinning machine

Info

Publication number: WO2019155633A1
Application number: PCT/JP2018/004717
Authority: WO
Inventors: 成利太田
Original assignee: 村田機械株式会社
Priority date: 2018-02-09
Filing date: 2018-02-09
Publication date: 2019-08-15

Abstract

A spinning machine (1) is provided with: a pair of feed rollers (42a, 42b) for clamping and feeding a sliver (S); a tow-spreading roller (44), which has multiple teeth (44b) on the circumference and spreads the sliver (S) fed from the pair of feed rollers (42a, 42b); and an air-spinning device (8) for forming a yarn (Y) from the sliver (S) spread by the tow-spreading roller (44).

Description

Spinning machine

The present invention relates to a spinning machine.

As a conventional spinning machine, for example, the one described in Patent Document 1 is known. The spinning machine described in Patent Document 1 is opened by one auxiliary roller (supply roller) that supplies a fiber bundle, a fiber opening roller that opens the fiber bundle supplied from the auxiliary roller, and a fiber opening roller. A yarn forming device that forms yarn from the fiber bundle.

Japanese Utility Model Publication No. 60-161173

In the spinning machine as described above, in order to accurately form the yarn count, it is necessary to stably supply a certain amount of fiber bundle at a constant speed to a predetermined position of the opening roller.

An object of one aspect of the present invention is to provide a spinning machine that can stably supply a fiber bundle to a fiber opening roller.

A spinning machine according to one aspect of the present invention includes a pair of supply rollers that sandwich and supply a fiber bundle, and a plurality of teeth on an outer peripheral portion, and opens the fiber bundle supplied from the pair of supply rollers. And a yarn forming device for forming a yarn from a fiber bundle opened by the opening roller.

Thereby, in the spinning machine, it is possible to avoid variations in the supply position, supply amount and supply speed of the fiber bundle with respect to the opening roller. Therefore, in the spinning machine, the fiber bundle can be stably supplied to the opening roller. As a result, the spinning machine can form a stable quality yarn with high accuracy.

In one embodiment, the pair of supply rollers includes a first supply roller and a second supply roller, the spinning machine includes a drive unit that drives the first supply roller, and the second supply roller includes the first supply roller and the second supply roller. You may rotate according to rotation of a supply roller. In this configuration, the supply amount and supply speed of the fiber bundles from the pair of supply rollers can be accurately controlled by controlling the drive unit. Further, since it is not necessary to synchronize the first supply roller and the second supply roller, it is possible to avoid the occurrence of deviation in the rotation of the pair of supply rollers. Therefore, in the spinning machine, the fiber bundle can be stably supplied to the opening roller.

In one embodiment, the apparatus includes a plurality of spinning units each having a pair of supply rollers, a fiber opening roller, a yarn forming device, and a drive unit. The supply roller and the fiber opening roller are different in each spinning unit. The spinning unit may be driven and stopped independently of the spinning unit. In this configuration, in one spinning unit, an operation of opening the fiber bundle can be performed independently of the other spinning units.

In one embodiment, the pair of supply rollers may supply a fiber bundle to the center of the opening roller in a direction along the rotation axis of the opening roller. With this configuration, it is possible to avoid the occurrence of problems such as meandering of the fiber bundle in the fiber opening roller. Therefore, in the spinning machine, the fiber bundle can be appropriately opened.

In one embodiment, the spinning machine may include a converging unit that is provided between the fiber opening roller and the yarn forming device in the traveling path of the fiber bundle and converges the fiber bundle. In this configuration, the fiber bundles opened by the opening roller can be aligned and rearranged at the converging unit, and the fiber bundles can be supplied to the yarn forming apparatus. Therefore, in the spinning machine, the yarn can be stably formed in the yarn forming apparatus.

In one embodiment, the spinning machine is provided on the downstream side of the yarn travel path from the yarn forming device, and includes a yarn monitoring device that monitors the state of the yarn, and a yarn defect in the yarn is detected by the yarn monitoring device. In this case, the rotation of the pair of supply rollers and the opening roller may be stopped. In this configuration, when a yarn defect is detected, the supply of the fiber bundle to the yarn forming device is stopped, and the operation of forming the yarn can be stopped.

In one embodiment, the spinning machine includes a winding device that winds a yarn to form a package, a first catching device that catches the yarn from the yarn forming device, and a second catching device that catches the yarn from the package. And a yarn joining device that joins the yarn caught by the first catching device and the yarn caught by the second catching device. In this configuration, when the yarn is cut, it is possible to automatically start forming the yarn by joining the yarn.

In one embodiment, the spinning machine monitors the length of the yarn wound around the package, and discharges the package when the length of the yarn wound around the package reaches a specified length. A doffing device. In this configuration, the package can be automatically discharged when the package is fully wound with a predetermined amount of yarn.

In one embodiment, the yarn forming device is an air spinning device that forms a yarn by twisting the fiber bundle by jetting air, and the air spinning device includes a nozzle block in which a passage for guiding the fiber bundle is formed. And a hollow guide shaft body in which a passage for guiding a fiber bundle that has been twisted by the action of air is formed. With this configuration, a high quality yarn can be formed.

According to one aspect of the present invention, the fiber bundle can be stably supplied to the opening roller.

FIG. 1 is a front view of a spinning machine according to an embodiment. FIG. 2 is a side view of the spinning unit of the spinning machine of FIG. FIG. 3 is a sectional view of the draft device. FIG. 4 is a block diagram showing the configuration of the spinning unit. FIG. 5 is a diagram schematically showing sliver supply from the supply roller to the fiber opening roller. FIG. 6 is a cross-sectional view of the pneumatic spinning device.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the same or an equivalent part, and the overlapping description is abbreviate | omitted.

As shown in FIG. 1, the spinning machine 1 includes a plurality of spinning units 2, a yarn splicing cart 3, a doffing cart (doffing device) 4, a first end frame 5A, and a second end frame 5B. It is equipped with. The plurality of spinning units 2 are arranged in a line. Each spinning unit 2 forms the yarn Y and winds it around the package P. When the yarn Y is cut by a certain spinning unit 2 or the yarn Y is cut for some reason, the yarn joining cart 3 performs a yarn joining operation with the spinning unit 2. The doffing cart 4 discharges the package P and supplies a new bobbin B to the spinning unit 2 when the package P becomes full in a spinning unit 2.

In the first end frame 5A, a collection device for collecting fiber waste and yarn waste generated in the spinning unit 2 is accommodated. The second end frame 5B adjusts the air pressure of the compressed air (air) supplied to the spinning machine 1 to supply air to each part of the spinning machine 1 and supplies power to each part of the spinning unit 2. A drive motor or the like is stored. The second end frame 5B is provided with a machine control device 5a, a display screen 5b, and an input key 5c. The machine control device 5a centrally manages and controls each part of the spinning machine 1. The display screen 5b can display information related to the setting contents and / or status of the spinning unit 2. When the operator performs an appropriate operation using the input key 5c, the setting operation of the spinning unit 2 can be performed.

As shown in FIG. 2, each spinning unit 2 includes a draft device 6, a converging unit 7, an air spinning device (yarn forming device) 8, and a yarn monitoring device (in order from the upstream side in the traveling direction of the yarn Y). A yarn length monitoring device) 9, a tension sensor 10, a yarn storage device 12, a waxing device 13, and a winding device 14. The unit controller 11 is provided for each predetermined number of spinning units 2 and controls the operation of the spinning units 2.

The draft device 6 drafts a sliver (fiber bundle) S. As shown in FIG. 3, the draft device 6 includes a housing 40, a pair of

supply rollers

42 a and 42 b, and a fiber opening roller (combing roller) 44.

The housing 40 has, for example, a rectangular parallelepiped shape. The housing 40 accommodates a pair of

supply rollers

42 a and 42 b and a fiber opening roller 44. The housing 40 includes a housing portion 40a that houses the pair of

supply rollers

42a and 42b and the opening roller 44, an introduction portion 40b into which the sliver S is introduced, a discharge portion 40c through which the fiber bundle F is discharged, and a first portion. An opening 40d and a second opening 40e are provided. Each of the accommodating part 40a, the introducing | transducing part 40b, the discharge part 40c, the 1st opening part 40d, and the 2nd opening part 40e is connected.

The first opening 40d is provided in the upper part of the housing 40. Specifically, the first opening 40d is disposed in the vicinity of the supply roller 42a. The second opening 40 e is provided at the lower part of the housing 40. Specifically, the second opening 40e is arranged in a lower portion on the upstream side of the housing 40 (a position facing the discharge portion 40c). The first opening 40d and the second opening 40e introduce air into the accommodating portion 40a.

The pair of

supply rollers

42 a and 42 b supplies the sliver S to the opening roller 44. The pair of

supply rollers

42 a and 42 b sandwich the sliver S and send the sliver S to the fiber opening roller 44. The pair of

supply rollers

42a and 42b includes a first supply roller 42a and a second supply roller 42b. In this specification, when both the 1st supply roller 42a and the 2nd supply roller 42b are shown, it shows as a pair of

supply rollers

42a and 42b.

The first supply roller 42a rotates around the rotation axis AX1. The second supply roller 42b rotates around the rotation axis AX2. In the present embodiment, as shown in FIG. 4, the first supply roller 42 a is rotationally driven by a first drive motor (drive unit) 46. As the first drive motor 46, for example, a step motor is used. The operation of the first drive motor 46 is controlled by the unit controller 11. The second supply roller 42b is a driven roller that rotates according to the rotation of the first supply roller 42a. The first drive motor 46 may be provided in the housing 40 or may be provided outside the housing 40.

The material of the pair of

supply rollers

42a and 42b is, for example, metal and / or rubber. The pair of

supply rollers

42a and 42b may be provided with rubber or the like on the surface of a metal member. The material of the pair of

supply rollers

42a and 42b may be different from each other. The sliver S is supplied to the pair of

supply rollers

42 a and 42 b via the converging member 45. The converging member 45 is, for example, a member called a trumpet, and has a cylindrical shape having a trumpet tip shape (so-called bell mouth shape) on the upstream side. The sliver S is inserted into the cylinder of the converging member 45.

The opening roller 44 opens the sliver S supplied from the pair of

supply rollers

42a and 42b. As shown in FIG. 3, the opening roller 44 has a main body 44a and a plurality of teeth 44b.

The main body 44a has a columnar shape (cylindrical shape). The main body 44a rotates around the rotation axis AX3. As shown in FIG. 4, the main body 44 a is rotationally driven by the second drive motor 48. As the second drive motor 48, for example, a step motor is used. The operation of the second drive motor 48 is controlled by the unit controller 11. The material of the main body 44a is, for example, metal, resin, or the like.

As shown in FIG. 3, the plurality of teeth 44 b are provided on the outer periphery of the opening roller 44. Each of the plurality of teeth 44b protrudes outward from the outer peripheral surface of the main body 44a along the radial direction of the main body 44a. In the present embodiment, the teeth 44b are linear members (wires). The plurality of teeth 44b are arranged at predetermined intervals (rules) on the outer peripheral surface of the main body 44a. The length, thickness, angle and shape of the teeth 44b are appropriately set according to the design.

In the draft device 6, the draft ratio is changed by changing the rotation speed of the pair of

supply rollers

42a and 42b and / or the opening roller 44. As shown in FIG. 5, the pair of

supply rollers

42 a and 42 b supplies the sliver S to the center of the opening roller 44 in the direction along the rotation axis AX <b> 3 of the opening roller 44. Specifically, when the width along the rotation axis AX3 of the fiber opening roller 44 (main body 44a) is W, the pair of

supply rollers

42a and 42b supplies the sliver S with a target position of W / 2. The central portion may have a predetermined width (range) with respect to the position W / 2 (position indicated by a broken line) in the direction along the rotation axis AX3.

1 and 2, the converging unit 7 is provided between the draft device 6 (opening roller 44) and the air spinning device 8 in the traveling direction of the fiber bundle F. The converging unit 7 converges (rearranges) the fiber bundle F drafted by the draft device 6 and discharged from the discharge unit 40c. For example, the converging part 7 has a cylindrical shape whose inner diameter decreases from the upstream opening toward the downstream opening. The fiber bundle F is inserted into the tube of the converging part 7.

The air spinning device 8 forms a yarn Y by twisting the fiber bundle F converged by the converging unit 7 by a swirling air flow. As shown in FIG. 6, the pneumatic spinning device 8 includes a nozzle block 70 and a hollow guide shaft body 80. The hollow guide shaft body 80 is inserted into the nozzle block 70 from the downstream side.

The nozzle block 70 has a fiber guide 71 and a swirl flow generator 72. The fiber guide portion 71 is provided with a guide hole 71 a for guiding the fiber bundle F supplied from the draft device 6 to the spinning chamber 73. The fiber guide portion 71 is provided with a needle 75. The tip 75 a of the needle 75 is located in the spinning chamber 73. The swirling flow generating unit 72 is provided with a plurality of nozzles 74 communicating with the spinning chamber 73. The plurality of nozzles 74 are arranged so that a swirling flow is generated in the spinning chamber 73 when air is injected. The swirl flow generating portion 72 is provided with a hole portion 72a into which the hollow guide shaft body 80 is inserted. The hole 72 a is formed in a truncated cone shape that tapers toward the upstream side, and communicates with the spinning chamber 73.

The hollow guide shaft body 80 can be inserted into the hole 72 a of the swirl flow generating portion 72. The upper end portion 80a of the hollow guide shaft body 80 is formed in a truncated cone shape that tapers toward the upstream side. The hollow guide shaft body 80 is provided with a passage 81 extending along the central axis of the hollow guide shaft body 80. The upstream side of the passage 81 communicates with the spinning chamber 73, and the passage 81 is formed to expand toward the outlet 83 on the downstream side. The recovery part 77 communicates with the spinning chamber 73 through a gap formed between the upper end part 80 a of the hollow guide shaft body 80 and the hole part 72 a of the swirl flow generation part 72.

As shown in FIG. 2, the yarn accumulating device 12 takes the yarn Y loose between the pneumatic spinning device 8 and the winding device 14. The waxing device 13 applies wax to the yarn Y between the yarn storage device 12 and the winding device 14. The winding device 14 winds the yarn Y around the bobbin B to form the package P.

The yarn monitoring device 9 is provided on the downstream side of the traveling path of the yarn Y with respect to the pneumatic spinning device 8, and monitors the information of the traveling yarn Y between the pneumatic spinning device 8 and the yarn storage device 12. The presence or absence of a yarn defect is detected based on the monitored information. When the yarn monitoring device 9 detects a yarn defect, the yarn monitoring device 9 transmits a yarn defect detection signal to the unit controller 11. The yarn monitoring device 9 detects the speed of the yarn Y based on the monitored information. The yarn monitoring device 9 calculates the length of the yarn Y wound around the package P based on the detected speed of the yarn Y. The yarn monitoring device 9 transmits a yarn length signal indicating the length of the yarn Y to the unit controller 11.

The tension sensor 10 measures the tension of the traveling yarn Y between the pneumatic spinning device 8 and the yarn storage device 12, and transmits a tension measurement signal to the unit controller 11. When the unit controller 11 determines that there is an abnormality based on the detection result of the yarn monitoring device 9 and / or the tension sensor 10, the yarn Y is cut in the spinning unit 2.

The winding device 14 forms the package P by winding the yarn Y around the bobbin B. The winding device 14 includes a cradle arm 21, a winding drum 22, and a traverse guide 23. The cradle arm 21 supports the bobbin B so as to be rotatable. The cradle arm 21 is swingably supported by a support shaft 24 and brings the surface of the bobbin B or the surface of the package P into contact with the surface of the winding drum 22 with an appropriate pressure. The traverse guide 23 of each spinning unit 2 is provided on a shaft (not shown) shared by the plurality of spinning units 2.

The yarn joining cart 3 includes a yarn joining device 26, a suction pipe (first catching device) 27, and a suction mouse (second catching device) 28. The suction pipe 27 is rotatably supported, captures the yarn Y from the pneumatic spinning device 8 and guides it to the yarn joining device 26. The suction mouse 28 is rotatably supported and captures the yarn Y from the winding device 14 and guides it to the yarn joining device 26. The yarn joining device 26 performs yarn joining between the guided yarns Y. The yarn joining device 26 is a splicer that uses compressed air or a knotter that mechanically joins the yarn Y. The yarn joining device 26 may be a piecing device that joins the yarn Y by feeding the yarn Y from the package P back to the pneumatic spinning device 8 and starting drafting by the draft device 6.

The doffing cart 4 includes a housing 51, a bobbin mounting mechanism 52, a cradle operation arm 53, and a suction pipe 54.

The accommodating part 51 accommodates the bobbin B. The bobbin mounting mechanism 52 supplies the bobbin B to the cradle arm 21. The cradle operating arm 53 is an operation for opening the cradle arm 21 in order to remove the fully packaged package P from the winding device 14 or an operation for closing the cradle arm 21 in order to attach a new bobbin B to the cradle arm 21. I do. The suction pipe 54 captures the yarn Y discharged from the pneumatic spinning device 8 by suction with the suction portion, and guides the captured yarn Y to the winding device 14.

In the spinning machine 1, the sliver S is supplied to the draft device 6 from a can (not shown) or the like. In the draft device 6, the sliver S is supplied to the pair of

supply rollers

42 a and 42 b via the converging member 45, and the pair of

supply rollers

42 a and 42 b rotates to supply the sliver S to the fiber opening roller 44. The opening roller 44 opens the sliver S.

The fiber bundle F opened by the fiber opening roller 44 is rearranged by the converging unit 7 and supplied to the pneumatic spinning device 8. The air spinning device 8 forms a yarn Y by twisting the fiber bundle F by air injection (swirl air flow). The yarn Y is wound around the package P by the winding device 14.

When the yarn monitoring device 9 detects a yarn defect in the yarn Y, the yarn monitoring device 9 transmits a yarn defect detection signal to the unit controller 11. When the unit controller 11 receives the yarn defect detection signal, the unit controller 11 stops the operation of the first drive motor 46 and the second drive motor 48. Thereby, rotation of a pair of

supply roller

42a, 42b and the fiber opening roller 44 stops. Further, the unit controller 11 stops spinning in the pneumatic spinning device 8. Thereby, the yarn Y is cut.

When the yarn Y is cut, the suction mouse 28 of the yarn joining cart 3 captures the yarn Y from the winding device 14 and guides it to the yarn joining device 26. The suction pipe 27 captures the yarn Y from the pneumatic spinning device 8 and guides it to the yarn joining device 26. The yarn joining device 26 joins the guided yarns Y together. When the yarn splicing is completed, the unit controller 11 starts the operation of the first drive motor 46 and the second drive motor 48 and causes the pneumatic spinning device 8 to start spinning. As a result, the spinning operation is started (resumed) in the spinning unit 2.

The yarn monitoring device 9 transmits a yarn length signal to the unit controller 11. The unit controller 11 obtains the length of the yarn Y wound around the package P based on the yarn length signal. The unit controller 11 stops the operation of the first drive motor 46 and the second drive motor 48 when the prescribed amount of the yarn Y is wound around the package P. Thereby, rotation of a pair of

supply roller

42a, 42b and the fiber opening roller 44 stops. Further, the unit controller 11 stops spinning with the pneumatic spinning device 8. Thereby, the yarn Y is cut. The unit controller 11 separates the package P from the winding drum 22, for example. The unit controller 11 operates the brake mechanism (not shown) of the winding device 14 or stops the rotation of the package P by bringing the brake mechanism (not shown) provided on the doffing carriage 4 into contact with the package P. Also good.

After the rotation of the package P stops, the doffing cart 4 discharges the package P from the spinning unit 2 and mounts the bobbin B on the winding device 14. When the doffing operation is completed, the unit controller 11 starts the operation of the first drive motor 46 and the second drive motor 48 and causes the pneumatic spinning device 8 to resume spinning. Thereby, in the spinning unit 2, the spinning operation is started (resumed), and the winding of the package P is started.

As described above, in the spinning machine 1 according to the present embodiment, the sliver S is sandwiched and supplied by the pair of

supply rollers

42a and 42b. Thereby, in the spinning machine 1, it can avoid that dispersion | variation arises in the supply position of the sliver S with respect to the fiber opening roller 44, supply amount, and supply speed. Therefore, in the spinning machine 1, the sliver S can be stably supplied to the fiber opening roller 44. As a result, the spinning machine 1 can accurately form the yarn Y of stable quality (for example, the yarn Y having a uniform count).

In the spinning machine 1 according to this embodiment, the draft device 6 includes a pair of

supply rollers

42a and 42b and a fiber opening roller 44. In this configuration, the spinning unit 2 can be downsized as compared with the configuration in which a plurality of draft roller pairs are provided in the travel path of the sliver S.

In the spinning machine 1 according to the present embodiment, in the draft device 6, a pair of

supply rollers

42 a and 42 b and a fiber opening roller 44 are accommodated in a housing 40. Therefore, the pair of

supply rollers

42a and 42b and the opening roller 44 are not easily affected by environmental temperature and humidity. Therefore, the draft device 6 can reduce the generation of static electricity due to the environmental temperature and humidity. Therefore, in the spinning machine 1, it is possible to avoid the occurrence of problems such as the sliver S being wound around the pair of

supply rollers

42a and 42b and the opening roller 44 due to static electricity.

In a draft device including a plurality of draft roller pairs, the surface of the draft roller (for example, the surface of a rubber top roller) may deteriorate with use. Deterioration of the draft roller surface degrades the yarn quality. Therefore, regular maintenance (exchange etc.) of the draft roller pair is required. Moreover, in the said draft apparatus, it is necessary to adjust the distance between a draft roller pair, or to exchange components according to the kind of raw material of sliver S, and fiber length. In the draft device 6 of the spinning machine 1 according to the present embodiment, the sliver S is opened by the opening roller 44 having a plurality of teeth 44b. The opening roller 44 is not easily deteriorated and does not need to be adjusted in accordance with the type of raw material of the sliver S and the fiber length. Therefore, the draft device 6 can be improved in maintainability and operability as compared with a draft device including a plurality of draft roller pairs.

The spinning machine 1 according to the present embodiment includes a first drive motor 46 that drives the first supply roller 42a. The second supply roller 42b rotates according to the rotation of the first supply roller 42a. In this configuration, the supply amount and the supply speed of the sliver S from the pair of

supply rollers

42a and 42b can be accurately controlled by the control of the first drive motor 46. That is, a certain amount of sliver S can be supplied to the fiber opening roller 44 by the pair of

supply rollers

42 a and 42 b. In addition, since it is not necessary to synchronize the first supply roller 42a and the second supply roller 42b, it is possible to avoid a deviation in the rotation of the pair of

supply rollers

42a and 42b. Therefore, in the spinning machine 1, the sliver S can be stably supplied to the fiber opening roller 44.

In the spinning machine 1 according to the present embodiment, the pair of

supply rollers

42a and 42b supplies the sliver S to the center of the opening roller 44 in the direction along the rotation axis AX3 of the opening roller 44. With this configuration, it is possible to avoid the occurrence of problems such as the sliver S meandering in the fiber opening roller 44. Therefore, the spinning machine 1 can appropriately open the sliver S.

The spinning machine 1 according to the present embodiment includes a converging unit 7 that is provided between the fiber opening roller 44 and the air spinning device 8 in the traveling path of the fiber bundle F and converges the fiber bundle F. In this configuration, the fiber bundle F opened by the fiber opening roller 44 can be aligned and rearranged in the converging unit 7, and the fiber bundle F can be supplied to the air spinning device 8. Therefore, in the spinning machine 1, the yarn Y can be stably formed in the pneumatic spinning device 8.

The spinning machine 1 according to this embodiment includes a yarn monitoring device 9 that is provided downstream of the pneumatic spinning device 8 in the traveling path of the yarn Y and that monitors the state of the yarn Y. The unit controller 11 stops the rotation of the pair of

supply rollers

42a and 42b and the opening roller 44 when the yarn monitoring device 9 detects a yarn defect of the yarn Y. In this configuration, when a yarn defect is detected, the supply of the fiber bundle F to the pneumatic spinning device 8 is stopped, and the operation of forming the yarn Y can be stopped.

The spinning machine 1 according to this embodiment includes a winding device 14 that winds a yarn Y to form a package P, a suction pipe 27 that captures the yarn Y from the pneumatic spinning device 8, and a yarn Y from the package P. A suction mouth 28 to be captured, a yarn Y captured by the suction pipe 27, and a yarn splicing device 26 for joining the yarn Y captured by the suction mouse 28 are provided. In this configuration, when the yarn Y is cut, the yarn Y can be joined and the formation of the yarn Y can be started automatically.

In the spinning machine 1 according to the present embodiment, the yarn monitoring device 9 monitors the length of the yarn Y wound around the package P. The spinning machine 1 includes a doffing cart 4 that discharges the package P when the length of the yarn Y wound around the package P reaches a specified length. In this configuration, the package P can be automatically discharged when the yarn Y is wound around the package P by a specified amount and becomes full.

In the spinning machine 1 according to the present embodiment, the pneumatic spinning device 8 includes a nozzle block 70 in which a guide hole 71a that guides the fiber bundle F is formed, and a passage that guides the fiber bundle F that is twisted by the action of air. And a hollow guide shaft body 80 in which 81 is formed. With this configuration, a high quality yarn Y can be formed.

In the spinning machine 1 according to the present embodiment, each of the spinning units 2 includes a pair of

supply rollers

42a and 42b, a fiber opening roller 44, an air spinning device 8, a first drive motor 46, and a second drive motor 48. And have. The pair of

supply rollers

42 a and 42 b and the opening roller 44 are driven and stopped in each spinning unit 2 independently of the other spinning units 2. In this configuration, the operation of opening the sliver S can be performed in one spinning unit 2 independently of the other spinning units 2.

As mentioned above, although embodiment of this invention has been described, this invention is not necessarily limited to embodiment mentioned above, A various change is possible in the range which does not deviate from the summary.

In the above embodiment, an example in which the teeth 44b of the opening roller 44 are linear members has been described. However, the teeth may be any member that can open the sliver S. The tooth may be, for example, a mountain-shaped member (triangular shape, pyramid shape (quadrangular pyramid shape)) or the like.

In the above embodiment, the first supply roller 42a is driven to rotate by the first drive motor 46 and the second supply roller 42b is driven by the rotation of the supply roller 42a as an example. However, both of the pair of

supply rollers

42a and 42b may be driven to rotate by a drive motor.

In the above-described embodiment, an example in which the pair of

supply rollers

42 a and 42 b are accommodated in the housing 40 has been described. However, the pair of

supply rollers

42 a and 42 b may be provided outside the housing 40.

In the above-described embodiment, an example in which the sliver S is supplied to the pair of

supply rollers

42a and 42b via the converging member 45 has been described as an example. However, the converging member 45 may not be provided. Instead of the converging member 45, a roller or the like may be provided. At least a part of the converging member 45 or the roller may be provided in the housing 40.

In the above embodiment, the configuration in which the converging unit 7 is provided between the draft device 6 and the air spinning device 8 has been described as an example. However, the converging unit 7 may be provided integrally with the housing 40 of the draft device 6. Further, the converging unit may be configured by a part of the housing 40.

The converging unit 7 is not limited to the shape of the above-described embodiment as long as the fiber bundle F is configured to converge (rearrange). The converging unit 7 is, for example, a plate, a guide, a porous roller that sucks fibers through a plurality of holes provided on the surface, a porous belt that sucks fibers through a plurality of holes provided on the surface, and the like. Also good.

In the above embodiment, an example in which the convergence unit 7 is provided has been described. However, the convergence unit 7 may not be provided. In particular, when the yarn Y to be formed is thick, since the degree of uniformity of the yarn Y may be low, the converging portion 7 may not be provided.

In the above-described embodiment, the case in which the first opening 40d and the second opening 40e are provided in the casing 40 of the draft device 6 has been described as an example. However, the housing 40 may not be provided with at least one of the first opening 40d and the second opening 40e.

In the above embodiment, the pneumatic spinning device 8 has been described as an example in which the nozzle block 70 and the hollow guide shaft body 80 are included. However, the pneumatic spinning device may be a device that includes a pair of air jet nozzles that twist the fiber bundle in opposite directions, and is supported in contact with the pneumatic spinning nozzle so as to cross each other in the axial direction. And a pair of rollers.

In the above embodiment, an example in which the length of the yarn Y wound around the package P is monitored by the yarn monitoring device 9 has been described as an example. However, the spinning machine may include a yarn length monitoring device that monitors the length of the yarn Y, separately from the yarn monitoring device 9.

In the embodiment described above, an example in which the spinning machine 1 includes the yarn splicing cart 3 has been described. However, each spinning unit 2 may include a suction pipe, a suction mouth, and a yarn splicing device.

In the above embodiment, an example in which the supply roller 42a is rotationally driven by the first drive motor 46 provided in each spinning unit 2 has been described. However, the supply rollers 42a of the plurality of spinning units 2 may be rotationally driven by a single drive motor provided in the second end frame 5B. The embodiment in which the opening roller 44 is rotationally driven by the second drive motor 48 provided in each spinning unit 2 has been described as an example. However, the opening rollers 44 of the plurality of spinning units 2 may be rotationally driven by a single drive motor provided in the second end frame 5B.

In the above embodiment, in the spinning machine 1, each device is arranged so that the yarn Y supplied on the upper side in the height direction is wound on the lower side. However, in the spinning machine, each device may be arranged so that the yarn supplied on the lower side is wound up on the upper side.

In the above-described embodiment, the form in which the display screen 5b and the input key 5c are provided in the second end frame 5B has been described as an example. However, the second end frame 5B may be provided with a touch panel display instead of the display screen and the input keys.

In the spinning unit 2, the yarn storage device 12 has a function of drawing the yarn Y from the pneumatic spinning device 8, but the yarn Y may be drawn from the pneumatic spinning device 8 by a delivery roller and a nip roller. When the yarn Y is pulled out from the pneumatic spinning device 8 by the delivery roller and the nip roller, a slack tube or a mechanical compensator that absorbs slackness of the yarn Y by a suction air flow may be provided instead of the yarn storage device 12.

In the traveling direction of the yarn Y, the tension sensor 10 may be arranged on the upstream side of the yarn monitoring device 9. The unit controller 11 may be provided for each spinning unit 2. In the spinning unit 2, at least one of the tension sensor 10 and the waxing device 13 may be omitted. When wax is not applied to the yarn Y, the waxing device 13 may be provided in the spinning unit 2 and the wax may be removed from the waxing device 13.

The spinning machine 1 can wind up the cheese-shaped package P or the corn-shaped package. In the case of a cone-shaped package, yarn slack is generated by traverse of the yarn, but the slack can be absorbed by the yarn storage device 12.

The materials and shapes of each component are not limited to the materials and shapes described above, and various materials and shapes can be employed. For example, the fiber guide part 71 and the swirl flow generation part 72 may be formed as one member. The needle 75 may be omitted, and the downstream end of the fiber guide portion 71 may have the function of the needle 75. At least one of the hole portion 72a and the upper end portion 80a of the hollow guide shaft body 80 may be a columnar shape instead of the truncated cone shape described above.

DESCRIPTION OF SYMBOLS 1 ... Spinning machine, 7 ... Converging part, 8 ... Pneumatic spinning device (yarn forming device), 9 ... Yarn monitoring device (yarn length monitoring device), 14 ... Winding device, 26 ... Yarn splicing device, 27 ... Suction pipe ( First capturing device), 28 ... Suction mouse (second capturing device), 42a, 42b ... Supply roller (first supply roller, second supply roller), 44 ... Opening roller, 44b ... Teeth, 46 ... First drive Motor (drive unit), 70 ... nozzle block, 80 ... hollow guide shaft body, AX3 ... rotating shaft, F ... fiber bundle, S ... sliver (fiber bundle).

Claims

A pair of supply rollers that sandwich and supply the fiber bundle;
A fiber opening roller that has a plurality of teeth on the outer periphery and opens the fiber bundle supplied from a pair of the supply rollers;
And a yarn forming device that forms a yarn from the fiber bundle opened by the fiber opening roller.
The pair of supply rollers includes a first supply roller and a second supply roller,
A drive unit for driving the first supply roller;
The spinning machine according to claim 1, wherein the second supply roller rotates according to the rotation of the first supply roller.
A plurality of spinning units having a pair of the supply roller, the fiber opening roller, the yarn forming device, and the drive unit;
The spinning machine according to claim 2, wherein the supply roller and the opening roller are driven and stopped in each of the spinning units independently of the other spinning units.
The spinning machine according to any one of claims 1 to 3, wherein the pair of supply rollers supplies the fiber bundle to a central portion of the opening roller in a direction along a rotation axis of the opening roller. .
The spinning machine according to any one of claims 1 to 4, further comprising a converging unit that is provided between the fiber opening roller and the yarn forming device in a traveling path of the fiber bundle and converges the fiber bundle.
A yarn monitoring device that is provided on the downstream side of the yarn traveling path from the yarn forming device and that monitors the state of the yarn;
The spinning machine according to any one of claims 1 to 5, wherein when a yarn defect of the yarn is detected by the yarn monitoring device, rotation of the pair of the supply roller and the fiber opening roller is stopped.
A winding device for winding the yarn to form a package;
A first catching device for catching the yarn from the yarn forming device;
A second catching device for catching the yarn from the package;
The spinning machine according to any one of claims 1 to 6, further comprising a yarn joining device that joins the yarn captured by the first capturing device and the yarn captured by the second capturing device. .
A yarn length monitoring device for monitoring the length of the yarn wound around the package;
The spinning machine according to claim 7, further comprising a doffing device that discharges the package when the length of the yarn wound around the package reaches a specified length.
The yarn forming device is an air spinning device that forms a yarn by twisting the fiber bundle by jetting air,
The pneumatic spinning device is
A nozzle block in which a passage for guiding the fiber bundle is formed;
The spinning machine according to any one of claims 1 to 8, further comprising: a hollow guide shaft body in which a passage for guiding the fiber bundle to which the twist is given by the action of air is formed.