Fiber bundle concentrating device for spinning machine

Abstract

To provide a fiber bundle bundling device in a spinning machine that is capable of suppressing the lowering of workability of work involving the attachment and detachment of a ventilation apron while suppressing lateral deviation of the ventilation apron.SOLUTION: A fiber bundle bundling device comprises a regulating member 40. The regulating member 40 has a rectangular parallelepiped body 41 and fitting parts 42 provided at both ends in the longitudinal direction of the body 41. The fitting parts 42 are elastically fitted to a bar 30.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a fiber bundle collecting device for a spinning machine. [Background technology]

[0002] Various fiber bundle concentrating devices have been proposed that pre-concentrate drafted fiber bundles before twisting, with the aim of reducing fuzz and improving yarn quality, such as yarn strength. For example, as shown in FIG. 11(a) or 11(b), a fiber bundle concentrating device 110 for a spinning machine disclosed in Patent Document 1 includes a nip roller pair 180, a suction pipe 150, a ventilation apron 160, and a guide unit 170. The nip roller pair 180 is provided downstream of a front roller pair 140, which serves as the final delivery roller pair of the draft part. The nip roller pair 180 is composed of a bottom nip roller 180a and a top nip roller 180b. The suction pipe 150 is provided upstream of a nip point of the nip roller pair 180 in the movement direction of the fiber bundle F. The guide unit 170 is provided downstream of a nip point of the nip roller pair 180 in the movement direction of the fiber bundle F. The guide portion 170 guides the ventilation apron 160 so that it rotates to a predetermined position.

[0003] The guide section 170 includes a flat bar 300 extending along the axial direction of the bottom nip roller 180a, and tensioning means 290 supported on the bar 300 to apply tension to the ventilation apron 160. The tensioning means 290 includes a pressing member 310 supported movably relative to the bar 300, and a spring member (not shown) that biases the pressing member 310 in a direction away from the bar 300. The pressing member 310 is provided with a protrusion 310b that restricts movement of the ventilation apron 160 in the width direction. A portion of the ventilation apron 160 is wrapped around the suction pipe 150, and a portion is wrapped around the bar 300 and the pressing member 310, and is rotated in conjunction with the rotation of the bottom nip roller 180a. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-95233 Summary of the Invention [Problem to be solved by the invention]

[0005] However, for example, if fluff accumulates between the guide portion 170 and the ventilation apron 160, there is a risk that the ventilation apron 160 will climb over the protrusion 310b of the guide portion 170 and shift sideways. Therefore, the inventors considered enlarging the protrusions 310b so that the ventilation apron 160 would not climb over the protrusions 310b of the guide part 170. In such a case, the ventilation apron 160 can be prevented from climbing over the protrusions 310b, but the protrusions 310b become an obstacle, for example, when removing the ventilation apron 160 from the guide part 170 and the suction pipe 150 for cleaning the ventilation apron 160, or when attaching the ventilation apron 160 after cleaning, reducing workability.

[0006] The object of the present invention has been made to solve the above-mentioned problems, and its object is to provide a fiber bundle collecting device for a spinning machine that can suppress lateral shifting of a breathable apron while suppressing a decrease in workability when putting on and taking off a breathable apron. [Means for solving the problem]

[0007] A fiber bundle collecting device in a spinning machine that solves the above-mentioned problem is a fiber bundle collecting device in a spinning machine that includes a plurality of nip rollers provided downstream of a final delivery roller pair in a draft part, a suction pipe that is provided upstream of the nip point of the nip rollers in the direction of movement of the fiber bundle and has a plurality of guide surfaces with suction holes, a winding member provided parallel to the suction pipe, and a plurality of endless ventilation aprons that are wound around the suction pipe and the winding member and rotated, and includes a regulating member that is provided between adjacent ventilation aprons in the axial direction of the nip rollers and has a regulating surface that faces the end of the ventilation apron, and the regulating member has a main body on which the regulating surface is formed, and an engaging portion that elastically engages with the winding member or the suction pipe.

[0008] This allows the main body of the restricting member to restrict lateral movement of the breathable apron. Furthermore, by configuring the restricting member to have a fitting portion that elastically fits onto the suction pipe or tensioner main body, the restricting member can be easily attached and detached from the suction pipe or wrapping member. As a result, by removing the restricting member from the suction pipe or wrapping member before performing work that involves attaching or detaching the breathable apron, the restricting member does not get in the way when attaching or detaching the breathable apron, making the work easier and improving workability.

[0009] In the fiber bundle collecting device, the fitting portion may be fitted onto the winding member. This eliminates the need to perform processing such as drilling a hole in the suction pipe in order to enable the fitting portion to fit onto the suction pipe.

[0010] In the fiber bundle collecting device, the winding member may be provided with a positioning portion that abuts against the regulating member to position the regulating member in the axial direction. This allows the force required to fit the fitting portion to the wrapping member to be weakened compared to when no positioning portion is provided, making it easier to attach and detach the restricting member to and from the wrapping member.

[0011] In the above-mentioned fiber bundle collecting device, the regulating member may have an extension portion extending from the main body toward the ventilation apron along the axial direction, and the extension portion may cover the end of the ventilation apron on the regulating member side.

[0012] This makes it difficult for the breathable apron to climb over the restricting surface of the restricting member. Furthermore, the height of the main body can be reduced while making it difficult for the breathable apron to climb over the main body. Reducing the height of the main body reduces the area of ​​the restricting member where fluff may accumulate, thereby preventing fluff from accumulating.

[0013] In the fiber bundle collecting device, the nip roller may be formed on a rotating shaft, and a gear for power transmission may be provided on the rotating shaft, and an intermediate gear may be meshed with the gear, and the regulating member may include a gear covering portion that covers the gear and the intermediate gear.

[0014] This allows the operator to be protected from the rotating gears and intermediate gears. [Effects of the Invention]

[0015] According to this invention, it is possible to suppress lateral shifting of the breathable apron while suppressing a decrease in workability when performing work that involves putting on and taking off the breathable apron. [Brief explanation of the drawings]

[0016] [Figure 1] 1A is a schematic cutaway side view showing a fiber bundle concentrating device according to a first embodiment, and FIG. 1B is a schematic enlarged side view showing a part of FIG. 1A. [Figure 2] 1(a) is a partial schematic diagram of the fiber bundle concentrating device as seen from the front side in the fiber bundle movement direction, and FIG. 1(b) is a front view of the rotation shaft. [Figure 3] FIG. 4 is a perspective view showing the relationship between the ventilation apron and the wrapping member. [Figure 4] FIG. [Figure 5] FIG. 10 is a side view showing the relationship between the restricting member and the bar. [Figure 6]FIG. 4 is a perspective view showing the relationship between the ventilation apron and the restricting member. [Figure 7] FIG. 10 is a perspective view showing the relationship between the ventilation apron and the restricting member in the second embodiment. [Figure 8] FIG. 2 is a schematic cutaway side view showing a part of the fiber bundle concentrating device. [Figure 9] FIG. 10 is a perspective view showing the relationship between a suction pipe and a restricting member in another embodiment. [Figure 10] FIG. 10 is a partial cross-sectional view showing the relationship between a suction pipe and a restricting member in another embodiment. [Figure 11] 1A is a schematic cutaway side view showing a fiber bundle concentrating device described in Patent Document 1, and FIG. 1B is a partially enlarged view of FIG. 1A. DETAILED DESCRIPTION OF THE INVENTION

[0017] (First embodiment) Hereinafter, a first embodiment in which a fiber bundle bundling device in a spinning machine is embodied in a fiber bundle bundling device mounted on a spinning machine will be described with reference to Figs.

[0018] As shown in FIG. 1(a) or FIG. 1(b), the fiber bundle concentrating device 11 is provided downstream of a final delivery roller pair 13 of a draft device 12 serving as a draft part. The fiber bundle collecting device 11 includes a plurality of nip rollers, a suction pipe 15, a ventilation apron 16, a winding member 17, and a regulating member 40. The plurality of nip rollers include a bottom nip roller 18a as a nip roller disposed parallel to the front bottom roller 13a of the final delivery roller pair 13, and a top nip roller 19 as a nip roller pressed against the bottom nip roller 18a via the endless ventilation apron 16. The bottom nip roller 18a is formed on a rotation shaft 18.

[0019] The direction in which the axis of the bottom nip roller 18a extends is defined as the axial direction L. Similar to the front top rollers 13b of the draft device 12, the top nip rollers 19 are supported by weighting arms (not shown) via support members 20 for every two spindles. The support members 20 are formed integrally with the support members of the front top rollers 13b. The suction pipe 15 is provided upstream of the nip point of the nip roller pair consisting of the bottom nip roller 18a and the top nip roller 19 in the moving direction of the fiber bundle F, and has a plurality of guide surfaces 15b each equipped with suction holes 15a.

[0020] 2(a) or 2(b), the bottom side of the fiber bundle concentrating device 11 is configured as one unit, which is half of the spindles arranged between the roller stands 21 of the draft device 12, four spindles in the first embodiment. At the intermediate position of the roller stands 21 arranged at predetermined intervals in the longitudinal direction of the machine base, a support arm 22 is arranged with its base end supported by a support beam (not shown) extending in the longitudinal direction of the machine base, and a rotation shaft 18 is supported between the roller stand 21 and the support arm 22.

[0021] The rotating shaft 18 is formed to a predetermined length corresponding to a plurality of spindles, for example, four spindles in the first embodiment. The rotating shaft 18 has bearings 23 fixed to both ends thereof, which are fitted into end plugs 24. The end plugs 24 are supported at fitting portions 24a by supports 21a and 22a provided on the roller stand 21 and the support arm 22, respectively, so that the rotating shaft 18 is rotatably supported between the roller stand 21 and the support arm 22. The supports 21a and 22a are formed to be able to support two end plugs 24, and are capable of supporting the end plugs 24 attached to the ends of adjacent rotating shafts 18.

[0022] A power transmission gear 25 is provided on the first longitudinal end side of the rotary shaft 18. The gear 25 is provided in the middle of a pair of bottom nip rollers 18a arranged on the first longitudinal end side of the rotary shaft 18. The gear 25 can rotate integrally with the rotary shaft 18.

[0023] As shown in Fig. 1(a), a gear portion 13c is formed on the front bottom roller 13a. The gear portion 13c is formed in a position facing a gear 25 (not shown in Fig. 1(a)). Similar to the support arm 22, an intermediate gear 27 is rotatably supported on a support arm 26 whose base end is fixed to a support beam, and the intermediate gear 27 meshes with the gear portion 13c and the gear 25. In other words, the rotational force of the front bottom roller 13a is transmitted to the rotation shaft 18 via the gear portion 13c, the intermediate gear 27, and the gear 25.

[0024] A suction duct (not shown) is disposed on the machine base so as to extend in its longitudinal direction (perpendicular to the plane of FIG. 1(a)). The suction pipe 15 extends parallel to the suction duct and is connected to the suction duct via a connecting pipe 28. The suction pipe 15 is supported with both ends fitted into a pair of end plugs 24, which support the rotary shaft 18.

[0025] The ventilation apron 16 is endless. A portion of the ventilation apron 16 is wrapped around the suction pipe 15, a portion of the ventilation apron 16 is wrapped around the wrapping member 17, and a portion of the ventilation apron 16 is wrapped around the bottom nip roller 18a so as to be in contact with the bottom nip roller 18a, and the ventilation apron 16 rotates while sliding along the guide surface 15b and the pressing member 31 as the bottom nip roller 18a rotates. In the first embodiment, the ventilation apron 16 is made of a woven fabric that ensures appropriate breathability.

[0026] Next, the winding member 17 will be described in detail. The winding member 17 guides the ventilation apron 16 to rotate at a position away from the bottom nip roller 18a on the side opposite to the fiber bundle guide side of the bottom nip roller 18a, and guides the ventilation apron 16 in a flat state on the outside of the winding member 17. The winding member 17 includes a flat bar 30 and tensioning means 29. The length of the bar 30 extends along the axial direction L of the bottom nip roller 18a. Each end of the bar 30 in the lengthwise direction is supported by being fitted into each end plug 24. A first end side of the bar 30 in the widthwise direction perpendicular to the lengthwise direction is bent to form a bent portion 30a. The bent portion 30a is formed over the entire length of the bar 30 in the lengthwise direction.

[0027] As shown in Figure 3, the bar 30 has a support portion 30b at a position corresponding to the bottom nip roller 18a. The support portion 30b protrudes from the second end of the bar 30 in the short direction so as to be away from the bottom nip roller 18a. The bar 30 has an edge portion 30c at the second end in the short direction, excluding the support portion 30b. The edge portion 30c is a portion that extends linearly in the longitudinal direction of the bar 30.

[0028] The tension applying means 29 is composed of a pressing member 31 that is movably supported on the support portion 30b of the bar 30, and a spring member 32 that urges the pressing member 31 in a direction away from the bar 30. The support portion 30b of the bar 30 has four protrusions 30d that extend longitudinally in the width direction of the bar 30 on the side facing the bottom nip roller 18a, and these protrusions 30d correspond to the attachment positions of the pressing members 31.

[0029] The pressing member 31 has a shape in which a first end in the short side direction of a rectangular metal plate is bent. A bent portion 31a is formed at the first end in the short side direction of the pressing member 31. The bent portion 31a is formed over the entire length of the pressing member 31 in the longitudinal direction.

[0030] The width, which is the longitudinal dimension of the pressing member 31, is formed to be approximately the same as the dimension in the lateral direction of the ventilation apron 16. Protrusions 31b are formed on both longitudinal ends of the pressing member 31. The pair of protrusions 31b protrude toward the side facing the ventilation apron 16 and restrict movement of the ventilation apron 16 in the width direction. The protrusions 31b are adjusted to a height that can be overcome by bending the ventilation apron 16. The pressing member 31 has an elongated hole 31c that is longer than the protrusion 30d of the support portion 30b, formed at a position corresponding to the protrusion 30d. The pressing member 31 is attached to the bar 30 with the elongated hole 31c loosely fitted into the protrusion 30d.

[0031] As shown in FIG. 3, the spring member 32 is interposed between the support portion 30b and the bent portion 31a of the pressing member 31. As shown in Figure 1(a) or Figure 2(a), the tip of a suction nozzle 33 of a single-type pneumatic device that acts to suck the fiber bundle F delivered from the draft device 12 when a yarn breakage occurs is disposed below and near the winding member 17. The base end of the suction nozzle 33 is connected to a pneumatic duct (not shown) that is common to all spindles.

[0032] Next, the regulating member 40 will be described in detail. The regulating member 40 is made of elastomer. The regulating member 40 is provided between adjacent ventilation aprons 16 in the axial direction L. In the first embodiment, of the four ventilation aprons 16 provided, one of the two ventilation aprons that sandwich the gear 25 in the axial direction L is designated as the first ventilation apron 16a, and the other is designated as the second ventilation apron 16b. The first ventilation apron 16a is the ventilation apron 16 that is closer to the support arm 22 than the second ventilation apron 16b.

[0033] The restricting member 40 guides the first ventilation apron 16a and the second ventilation apron 16b so that they pass through the guide surface 15b. The restricting member 40 has a rectangular parallelepiped main body 41 and fitting portions 42 provided at both ends of the main body 41 in the longitudinal direction.

[0034] The length of the main body 41 extends in the axial direction L. As shown in Fig. 4, flat regulating surfaces 41a are provided on both longitudinal ends of the main body 41. When the end 16e of the first ventilation apron 16a or the second ventilation apron 16b shifts laterally along the axial direction L by a certain amount or more, the end 16e comes into contact with the regulating surface 41a, thereby regulating the lateral shift of the first ventilation apron 16a and the second ventilation apron 16b along the axial direction L.

[0035] One of the fitting portions 42 is disposed on the main body 41 closer to the first ventilation apron 16a, and the other fitting portion 42 is disposed on the main body 41 closer to the second ventilation apron 16b. As shown in Figures 4 and 5, the surface of the main body 41 that faces the bar 30 is referred to as the facing surface 410. The longitudinal direction of the facing surface 410 extends in the axial direction L. The fitting portion 42 has a first fitting piece 420 and a second fitting piece 421. The first fitting piece 420 and the second fitting piece 421 face each other in the short-side direction of the main body 41. The first fitting piece 420 and the second fitting piece 421 face each other with a gap between them in the short-side direction of the facing surface 410 of the main body 41.

[0036] The first fitting piece 420 extends in a curved manner from the opposing surface 410 toward the pressing member 31. The second fitting piece 421 extends in a stepped manner from the opposing surface 410 toward the pressing member 31. The second fitting piece 421 has a base end 421a closer to the opposing surface 410, a tip end 421b that protrudes from the base end 421a toward the pressing member 31, and a claw 421c that protrudes from the tip end 421b toward the first fitting piece 420.

[0037] The dimensions of the base end 421a, the tip end 421b, and the claw 421c in the axial direction L are the same. The inner surface of the first fitting piece 420 faces the inner surfaces of the base end 421a and the tip end 421b in the short direction of the opposing surface 410. The dimension between the inner surface of the first fitting piece 420 and the inner surface of the tip end 421b along the short direction of the opposing surface 410 is defined as the spacing K of the fitting portion 42. The dimension between the outer surface of the bent portion 30a and the edge portion 30c along the short direction of the bar 30 is defined as the width W of the bar 30. The spacing K of the fitting portion 42 is the same as or slightly shorter than the width W of the bar 30.

[0038] The first fitting piece 420 contacts the outer surface of the bent portion 30a of the bar 30, and the second fitting piece 421 contacts the edge portion 30c of the bar 30. The first fitting piece 420 and the second fitting piece 421 are each elastically deformed outward along the short direction of the bar 30. The first fitting piece 420 and the second fitting piece 421 are pressed against the bar 30 by a return force that returns them to their original shape from their elastic deformation, and are attached to the bar 30.

[0039] As shown in Figure 6, the bar 30 has a positioning portion 43. The positioning portion 43 is provided closer to the ventilation apron 16 in the axial direction L than the fitting portions 42. The positioning portion 43 protrudes from the bar 30. The positioning portion 43 abuts against the fitting piece 420 to position the restricting member 40 in the axial direction L.

[0040] The restricting member 40 has an extending portion 44. The extending portion 44 extends toward the ventilation apron 16 along the axial direction L. The extending portion 44 extends from both restricting surfaces 41a of the main body 41 toward the ventilation apron 16. The extending portion 44 is flat. The extending portion 44 also covers from the outside the end 16e of the ventilation apron 16 that is on the restricting member 40 side in the short direction. Therefore, the ventilation apron 16 is interposed between the extending portion 44 and the bar 30. The extending portion 44 is normally not in contact with the ventilation apron 16.

[0041] Next, the operation of the first embodiment will be described. When the spinning frame is in operation, the fiber bundle F is drafted by the draft device 12 and then guided from the final let-off roller pair 13 to the fiber bundle concentrating device 11. The bottom nip roller 18a and the top nip roller 19 are rotated at a speed substantially equal to the surface speed of the final let-off roller pair 13, and the fiber bundle F passes through the nip points of the bottom nip roller 18a and the top nip roller 19 under an appropriate tension, then turns around and rotates downstream while being twisted.

[0042] For example, if fly lint generated during spinning accumulates between the bar 30 and the pressing member 31, an outward force acts on the outer peripheral surface of the ventilation apron 16, which may cause the ventilation apron 16 to climb over the protrusion 31b. However, the end 16e of the ventilation apron 16 abuts against the regulating surface 41a, thereby restricting further lateral movement of the ventilation apron 16. In addition, the regulating surface 41a of the regulating member 40 prevents the ventilation apron 16 from becoming caught in the gear 25. Furthermore, the extension 44 prevents the ventilation apron 16 from climbing over the regulating surface 41a.

[0043] Furthermore, as part of the maintenance of the spinning frame, the ventilation apron 16 is periodically cleaned to remove fluff and other debris adhering to the ventilation apron 16. When the ventilation apron 16 is removed from the fiber bundle collecting device 11 for cleaning, first, the fitting portions 42 of the regulating member 40 are removed from the bar 30, and then the ventilation apron 16 is removed from the fiber bundle collecting device 11. After cleaning of the ventilation apron 16 is complete, the ventilation apron 16 is attached to the fiber bundle collecting device 11, and then the fitting portions 42 of the regulating member 40 are attached to the bar 30.

[0044] In the first embodiment, the following effects can be obtained. (1-1) The main body 41 can prevent the lateral movement of the ventilation apron 16. Furthermore, by configuring the restriction member 40 to have a fitting portion 42 that elastically fits onto the bar 30, the restriction member 40 can be easily attached and detached from the bar 30. As a result, by removing the restriction member 40 from the bar 30 before performing work that involves attaching or detaching the ventilation apron 16, the restriction member 40 does not get in the way when attaching or detaching the ventilation apron 16, making the attachment and detachment work easier and improving workability.

[0045] (1-2) The fiber bundle collecting device 11 has a fitting portion 42 that elastically fits onto the bar 30. Therefore, since the regulating member 40 is detachable from the suction pipe 15, there is no need to perform processing such as drilling a hole in the suction pipe 15.

[0046] (1-3) The positioning portion 43 can restrict movement of the restricting member 40 in the axial direction L. Therefore, the force required to fit the fitting portion 42 to the bar 30 can be weakened compared to when the positioning portion 43 is not provided on the bar 30. This makes it easier to attach and detach the restricting member 40 to and from the bar 30.

[0047] (1-4) By providing the restricting surface 41a of the restricting member 40, the end 16e of the ventilation apron 16 comes into contact with the restricting surface 41a, thereby restricting further lateral displacement of the ventilation apron 16.

[0048] (1-5) By covering the end 16e of the breathable apron 16 from the outside with the extension 44 of the restricting member 40, it is possible to make it difficult for the breathable apron 16 to climb over the restricting surface 41a of the restricting member 40. Therefore, compared to a case where the extension 44 is not provided, it is possible to make it difficult for the breathable apron 16 to climb over the restricting surface 41a while keeping the height of the main body 41 low. By keeping the height of the main body 41 low, it is possible to reduce the area of ​​the restricting member 40 where fluff may accumulate, thereby preventing fluff from accumulating.

[0049] (Second embodiment) A second embodiment of a fiber bundle concentrating device for a spinning machine will be described below with reference to Figures 7 and 8. In the embodiment described below, the same components as those in the first embodiment will be denoted by the same reference numerals, and redundant description will be omitted or simplified. The second embodiment differs from the first embodiment in that the restricting member 40 described in the first embodiment does not have the extension portion 44.

[0050] As shown in Fig. 7 or 8, the regulating member 40 has a first cover member 50a serving as a gear covering portion and a second cover member 50b serving as a gear covering portion. The first cover member 50a extends from the main body 41 toward the gear 25, and the second cover member 50b extends from the main body 41 toward the intermediate gear 27. The first cover member 50a and the second cover member 50b are each shaped like a curved plate. The first cover member 50a covers the gear 25 from the outside. The second cover member 50b covers the intermediate gear 27 from the outside.

[0051] In the second embodiment, in addition to the same effect as (1-1) in the first embodiment, the following effect can be obtained. (2-1) The restricting member 40 has a first cover member 50a that covers the gear 25 and a second cover member 50b that covers the intermediate gear 27. This makes it possible to protect the operator from the rotating gear 25 and intermediate gear 27.

[0052] The above-described embodiments can be modified as follows: The above-described embodiments and the following modifications can be combined with each other within the scope of technical compatibility.

[0053] 9 and 10 , the restricting member 40 may be configured to elastically fit into a fitting hole 15h formed in the suction pipe 15. The restricting member 40 includes a rectangular parallelepiped main body 41, a fitting portion 62 integral with the main body 41, and an extending portion 44 integral with the main body 41.

[0054] The fitting portion 62 protrudes in an annular shape from the main body 41 toward the suction pipe 15. A ring-shaped retaining portion 65 protrudes from the protruding end of the fitting portion 62. Furthermore, a ring-shaped clamping portion 63 protrudes from the outer peripheral surface of the fitting portion 62, closer to the main body 41 than the retaining portion 65. A groove 64 is formed between the retaining portion 65 and the clamping portion 63, into which the periphery of the fitting hole 15h of the suction pipe 15 is inserted. The width of the groove 64 in the opposing direction of the retaining portion 65 and the clamping portion 63 is the same as the thickness of the periphery of the fitting hole 15h of the suction pipe 15. Furthermore, the outer periphery of the bottom surface of the groove 64 before the restricting member 40 is attached to the fitting hole 15h is larger than the inner periphery of the fitting hole 15h of the suction pipe 15.

[0055] When attaching the regulating member 40 to the suction pipe 15, the retaining portion 65 is pushed into the fitting hole 15h of the suction pipe 15 to position the retaining portion 65 inside the suction pipe 15. Then, the periphery of the fitting hole 15h of the suction pipe 15 is sandwiched between the retaining portion 65 and the clamping portion 63, and the retaining portion 65, the clamping portion 63, and the bottom surface of the groove 64 are tightly fitted around the periphery of the fitting hole 15h of the suction pipe 15. In this way, the regulating member 40 is attached around the fitting hole 15h of the suction pipe 15. That is, the regulating member 40 is attached to the suction pipe 15 by fitting.

[0056] In the above embodiments, the positioning portion 43 is provided on the bar 30, but the positioning portion 43 may be provided on the restricting member 40. In short, as long as the movement of the restricting member 40 in the axial direction L is restricted, the positioning portion may have any configuration, and may be provided on either or both of the bar 30 and the restricting member 40.

[0057] In the first embodiment, the positioning portion 43 may be omitted. In this case, it is preferable that the fitting portion 42 has a fitting force sufficient to restrict movement in the axial direction L. In the above embodiments, the main body 41 and the fitting portions 42, 62 are made of elastomer, but they do not necessarily have to be made of elastomer. In short, the material may be changed as appropriate as long as it is strong enough to allow the fitting portions 42, 62 to be attached to and detached from the wrapping member 17 or the suction pipe 15.

[0058] In the above-described embodiments, the fitting portions 42 and 62 are integral with the main body 41 . However, the fitting portions 42 and 62 may be separate from the main body 41 . In the second embodiment, the regulating member 40 has two types of gear covering portions, namely, the first cover member 50a that covers the gear 25 and the second cover member 50b that covers the intermediate gear 27, but it may have only one of them.

[0059] In each of the above-described embodiments, the bar 30 does not necessarily have to have the bent portion 30a extending over the entire length at one end in the width direction. In each of the above embodiments, only one fiber bundle concentrating device 11 is provided for each bar 30. However, a plurality of fiber bundle concentrating devices 11 may be provided for each bar 30.

[0060] In each of the above-described embodiments, the wrapping member 17 may be configured with only the bar 30 without including the tension applying means 29. In this case, it is preferable to provide the bar 30 with a protrusion 31b for guiding the ventilation apron 16.

[0061] In each of the above embodiments, instead of the configuration in which the fiber bundle F is nipped between the bottom nip roller 18a and the top nip roller 19, a configuration in which the fiber bundle F is nipped between the suction pipe 15 and the top nip roller 19 may be adopted, and the ventilation apron 16 wrapped around the suction pipe 15 may be rotated by the top nip roller 19. [Explanation of symbols]

[0062] 11...fiber bundle concentrating device, 12...draft device as draft part, 13...final delivery roller pair, 15...suction pipe, 15a...suction hole, 15b...guide surface, 16...ventilation apron, 16e...end portion, 17...winding member, 18...rotating shaft, 18a...bottom nip roller as nip roller, 19...top nip roller as nip roller, 25...gear, 27...intermediate gear, 40...regulating member, 41...main body, 41a...regulating surface, 42...fitting portion, 43...positioning portion, 44...extension portion, 50a...first cover member as gear covering portion, 50b...second cover member as gear covering portion, F...fiber bundle, L...axial direction.

Claims

1. a plurality of nip rollers provided downstream of the final delivery roller pair of the draft part; a suction pipe provided upstream of the nip point of the nip roller in the moving direction of the fiber bundle and having a plurality of guide surfaces each having a suction hole; a winding member provided parallel to the suction pipe; a plurality of endless ventilation aprons that are wound around the suction pipe and the winding member and rotated, a regulating member provided between adjacent ventilation aprons in the axial direction of the nip roller and having a regulating surface facing an end of the ventilation aprons; The regulating member includes a main body on which the regulating surface is formed; a fitting portion that is elastically fitted onto the wrapping member or the suction pipe, a regulating member provided with an extension portion extending from the regulating surface of the main body toward the ventilation apron along the axial direction, the extension portion covering the end of the ventilation apron on the regulating member side, and the ventilation apron being interposed between the extension portion and the wrapping member or the suction pipe.

2. The fiber bundle collecting device for a spinning machine according to claim 1, wherein the fitting portion is fitted onto the winding member.

3. 3. The fiber bundle collecting device according to claim 2, wherein the winding member is provided with a positioning portion that abuts against the regulating member to position the regulating member in the axial direction.

4. The fiber bundle collecting device for a spinning machine described in any one of claims 1 to 3, characterized in that the nip roller is formed on a rotating shaft, and a gear for power transmission is provided on the rotating shaft, the gear is meshed with an intermediate gear, and the regulating member has a gear covering portion that covers the gear and the intermediate gear.

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