A fiber bundle gathering device for a spinning machine

Abstract

A fiber bundle bunching device of a spinning machine is provided. A bearing that rotatably supports an intermediate shaft that rotationally drives a delivery lower roller that delivers a fiber bundle is accurately disposed in an axial direction. The fiber bundle bunching device of the spinning machine includes a compression unit (110) that has a delivery roller pair of a delivery upper roller (118) and the delivery lower roller (112) that deliver the fiber bundle, a suction portion (114) that applies a suction to the fiber bundle, and a porous apron (116) that rotates along the suction portion (114), the compression unit (110) bunches the fiber bundle after drafting; a support plate (120) that is fixed to a roller support (10), supports the compression unit (110); and the intermediate shaft (130) that rotationally drives the delivery lower roller (112), the support plate (120) includes an opening portion (122) through which the intermediate shaft (130) passes, the opening portion (122) is configured to be smaller than an outer diameter of the bearing, and an edge of the opening portion limits a position of the bearing in the axial direction.

Description

Technical Field

[0001] This invention relates to a fiber bundle bundling device for a spinning machine. Background Technology

[0002] Various fiber bundle bundling devices have been proposed to pre-bundle fiber bundles that have been stretched by the drafting device before twisting, with the aim of reducing fuzz and improving yarn quality such as yarn strength.

[0003] This fiber bundle bundling device includes an intermediate shaft that drives the feed rollers that transport the fiber bundles to rotate. In the fiber bundle bundling device, it is important to precisely configure the intermediate shaft as a rotatable bearing.

[0004] Patent Document 1: European Patent Publication No. EP1473388

[0005] Patent Document 1 discloses that a bearing supporting the intermediate shaft as a rotatable structure is fixed by using a fixing screw facing inward in the radial direction.

[0006] In a spinning machine, fiber bundle bundling devices are arranged at predetermined intervals along the length of the machine, corresponding to multiple spindles. Furthermore, each fiber bundle bundling device employs a structure driven by a shared intermediate shaft.

[0007] Therefore, axial loads (hereinafter, thrust loads) are sometimes generated on the bearing that supports the intermediate shaft so that it can rotate. With the fixation formed by the fixing screw in Patent Document 1 alone, it is possible for the bearing to misalign in the case where a thrust load greater than the frictional force between the fixing screw and the bearing is generated. Summary of the Invention

[0008] The present invention was made in view of the above-mentioned problems, and its object is to provide a fiber bundle bundling device for a spinning machine, which can be configured with high precision in the axial direction to support an intermediate shaft as a rotatable bearing, the intermediate shaft driving the conveying rollers that convey the fiber bundles.

[0009] The fiber bundle bundling device of the spinning machine of the present invention comprises: a compression unit having a pair of conveying rollers consisting of an upper conveying roller and a lower conveying roller for conveying the fiber bundle, an attraction section for applying an attraction force to the fiber bundle, and a breathable ring rotating along the attraction section, the compression unit bundling the drafted fiber bundle; a support plate fixed to a roller bracket for supporting the compression unit; and an intermediate shaft for rotating the lower conveying roller, the support plate having an opening through which the intermediate shaft passes, the opening being configured to be smaller than the outer diameter of the bearing, and the edge of the opening restricting the axial position of the bearing.

[0010] In the fiber bundle bundling device of the spinning machine of the present invention, it is preferable that the support plate restricts the position of the bearing from both sides of the axial direction.

[0011] According to the present invention, in the fiber bundle bundling device of a spinning machine, a bearing supporting an intermediate shaft as a rotatable element can be configured with high precision in the axial direction, the intermediate shaft driving the feed rollers that transport the fiber bundles. Attached Figure Description

[0012] Figure 1 This is a structural diagram showing the structure of the fiber bundle gathering device of the spinning machine in Embodiment 1 together with a partial structure of the drafting device.

[0013] Figure 2 This is a structural diagram showing the positioning of the intermediate shaft in the fiber bundle bundling device of the spinning machine in Embodiment 1.

[0014] Figure 3 This is a structural diagram showing a modified example of the positioning of the intermediate shaft in the fiber bundle gathering device of the spinning machine in Embodiment 1.

[0015] Explanation of reference numerals in the attached figures

[0016] 10… Roller support; 12… Storage section; 90… Drawing device; 98, 99… Final conveying roller; 100… Fiber bundle bundling device; 110… Compression unit; 112… Lower conveying roller; 114… Suction section; 115… Guide section; 116… Ventilation ring; 118… Upper conveying roller; 120, 120a, 120b… Support plate; 122, 122a… Opening; 130… Intermediate shaft; 140… Bearing; 160… Bolt; F… Fiber bundle. Detailed Implementation

[0017] Hereinafter, embodiments of the fiber bundle bundling device for a spinning machine will be described using the accompanying drawings. Furthermore, in each drawing, the same reference numerals are used to label the same parts.

[0018] Implementation method 1.

[0019] First, refer to Figure 1 The basic structure of the fiber bundle bundling device 100 of the spinning machine in Embodiment 1 will be described. Figure 1 This is a structural diagram showing the structure of the fiber bundle gathering device 100 of the spinning machine in Embodiment 1 together with a partial structure of the drafting device 90.

[0020] The fiber bundle bundling device 100 is located downstream of the final conveying rollers 98 and 99 of the drafting device 90. It pre-bundles the drafted fiber bundles before twisting and performs treatments such as reducing fluff.

[0021] The fiber bundle bundling device 100 mainly includes a compression unit 110, a support plate 120, and an intermediate shaft 130.

[0022] The compression unit 110 is provided with a lower conveying roller 112, a suction section 114, a guide section 115, a breathable rubber ring 116, and an upper conveying roller 118.

[0023] A gear (not shown) corresponding to the gear of the intermediate shaft 130 is provided on the lower conveyor roller 112. The lower conveyor roller 112 is driven to rotate by the gear of the intermediate shaft 130, which in turn drives the breathable rubber ring 116 to rotate and convey the fiber bundle F.

[0024] The suction section 114 has multiple suction holes. The suction section 114 applies suction to the transported fiber bundle F via a breathable rubber ring 116.

[0025] The breathable rubber ring 116 is formed of a ring-shaped fabric that ensures breathability and is wound around the conveyor roller 112, the suction section 114 and the guide section 115.

[0026] The upper conveyor roller 118 rotates together with the lower conveyor roller 112, which is pressed together by a venting ring 116. The upper conveyor roller 118 and the lower conveyor roller form a conveyor roller pair.

[0027] Each part of the compression unit 110 is supported by the support plate 120, or by an additional support member not shown. The support plate 120 is fixed at a predetermined position on the roller bracket 10.

[0028] The fiber bundle F follows the rotation of the lower conveyor roller 112 driven by the intermediate shaft 130, is held by the lower conveyor roller 112 and the upper conveyor roller 118, and is attracted and conveyed by the suction section 114 via the breathable ring 116.

[0029] The intermediate shaft 130 is housed in the bearing 140 of the roller bracket 10 and is supported so that it can rotate.

[0030] Next, refer to Figure 2 The positioning of the intermediate shaft 130 in the fiber bundle bundling device 100 will be explained. Figure 2 This is a structural diagram showing the positioning of the intermediate shaft 130 in the fiber bundle gathering device 100 of the spinning machine in Embodiment 1.

[0031] Figure 2 (a) indicates the relationship between the support plate 120 and the intermediate shaft 130 when the axial direction of the intermediate shaft 130 is set perpendicular to the plane of the paper. Figure 2 In (b), through Figure 2 Section IIb-IIb of (a) shows the positional relationship between the support plate 120, the intermediate shaft 130 and the bearing 140.

[0032] The support plate 120 is fixed to the roller bracket 10 at a specified position by a plurality of bolts 160.

[0033] The roller support 10 is supported by a drafting rod that is supported on the base of the spinning machine, and supports the aforementioned drafting device 90. The roller support 10 has a housing portion 12 for housing the bearing 140.

[0034] The bearing 140 is housed in the housing portion 12 provided in the roller bracket 10, supporting the intermediate shaft 130 so that it can rotate.

[0035] like Figure 2 As shown in (b), the support plate 120 is fixed to clamp the roller bracket 10 from both sides in the width direction. That is, the support plate 120 has a pair of support plates 120a and 120b respectively fixed to both sides of the roller bracket 10. The bearing 140 is restricted from axial movement by a predetermined amount by the pair of support plates 120a and 120b. That is, the support plate 120 restricts the axial position of the bearing 140 from both sides of the axial direction of the intermediate shaft 130.

[0036] In this embodiment, the support plate 120 restricts the axial position of the bearing 140 from both sides of the axial direction by a pair of support plates 120a and 120b. However, if it is known in advance that the thrust load applied to the intermediate shaft 130 acts only in one direction, it is also possible to restrict only the direction of the thrust load.

[0037] In this embodiment, the term "restricting the axial position" can mean that the support plate 120 is initially in contact with the bearing, or it can mean that... Figure 2 Contact with such a gap or axial displacement restricts further movement.

[0038] Furthermore, in the case where there are multiple roller supports 10 relative to the intermediate shaft 130, a bearing 140 may be provided on at least one of the multiple roller supports 10. In this case, in the roller support 10 where the bearing 140 is not present, the support plate 120 exists to support the compression unit 110.

[0039] A pair of support plates 120a and 120b are each provided with a circular opening 122, having an inner diameter larger than the outer diameter of the intermediate shaft 130, for the intermediate shaft 130 to pass through. The inner diameter of the opening 122 is configured to be smaller than the outer diameter of the bearing 140, and the edge of the opening 122 is used to restrict the axial position of the bearing 140.

[0040] Therefore, in the support plate 120, the edge region of the opening 122 contacts either the housing or the outer ring of the bearing 140, restricting the axial position of the bearing 140. Furthermore, since the edge region of the opening 122 contacts either the housing or the outer ring of the bearing 140, it does not impede the rotation of the intermediate shaft 130.

[0041] The opening 122 only needs to allow the intermediate shaft 130 to pass through and restrict the axial position of the bearing 140. Therefore, the opening 122 can also be a shape other than a circle. For example, the opening 122 can also be a polygonal shape such as a triangle, quadrilateral, pentagon, or hexagon.

[0042] Here, refer to Figure 3 A modified example of the positioning of the intermediate shaft 130 in the fiber bundle bundling device 100 will be described. Figure 3 This is a structural diagram showing a modified example of the positioning of the intermediate shaft 130 in the fiber bundle gathering device 100 of the spinning machine in Embodiment 1.

[0043] Figure 3 (a) indicates the relationship between the support plate 120 and the intermediate shaft 130 when the axial direction of the intermediate shaft 130 is set perpendicular to the plane of the paper. Figure 3 In (b), through Figure 3 Section IIIb-IIIb of (a) shows the positional relationship between the support plate 120, the intermediate shaft 130 and the bearing 140.

[0044] exist Figure 3 In the middle, to and Figure 2 The same parts are labeled with the same reference numerals. Figure 3 In Chinese, omission and Figure 2 Repeated explanation, regarding Figure 2 The different parts will be explained.

[0045] Each of the pair of support plates 120a and 120b has a U-shaped opening 122a for the intermediate shaft 130 to pass through, which has an opening width larger than the outer diameter of the intermediate shaft 130.

[0046] The opening width of the opening 122a is narrower than the outer diameter of the bearing 140, and one end is open.

[0047] Therefore, in the support plate 120, the edge region of the U-shaped opening 122a contacts either the housing or the outer ring of the bearing 140, restricting the axial position of the bearing 140. Furthermore, since the edge region of the opening 122a contacts either the housing or the outer ring of the bearing 140, it does not impede the rotation of the intermediate shaft 130.

[0048] The opening 122a only needs to allow the intermediate shaft 130 to pass through and restrict the axial position of the bearing 140. Therefore, the opening 122a can also be a shape other than a U-shape. For example, the opening 122a can also be a V-shape with one end open or a polygon with one end open.

[0049] Thus, in a spinning machine, where the fiber bundle gathering device 100 is driven to rotate via a common intermediate shaft 130 corresponding to multiple spindles along the length of the machine, even when a thrust load is applied to the bearing 140 that supports the intermediate shaft 130 for rotation, the axial position of the bearing 140 is restricted by the support plate 120. As a result, misalignment caused by the thrust load can be prevented, and the bearing 140 can be configured with high precision.

[0050] Furthermore, compared to fixing screws and simple fitting, it can withstand greater thrust loads. Additionally, it eliminates the need for fixing screws, threaded holes for fixing screws, retaining rings, machining to add elasticity to retaining rings, and machining of additional parts.

[0051] The bearing 140 is housed in the housing portion 12 of the roller bracket 10, thus ensuring the original alignment accuracy.

[0052] The support plate 120 supports the various parts of the compression unit 110 and restricts the axial position of the bearing 140, thus also ensuring the relative positional accuracy between the intermediate shaft 130 and the various parts of the compression unit 110.

[0053] As described above, the fiber bundle bundling device of the spinning machine according to the present invention can be configured with high precision in the axial direction to support the intermediate shaft 130 as a rotatable bearing 140, which drives the lower roller 112 for conveying the fiber bundle to rotate.

[0054] [Effects obtained through implementation methods]

[0055] As explained above, the following effects can be obtained according to the implementation method.

[0056] The fiber bundle bundling device 100 of the spinning machine of the present invention includes: a compression unit 110 having a pair of conveying rollers consisting of an upper conveying roller 118 and a lower conveying roller 112 for conveying the fiber bundle, an attraction part 114 for applying an attraction to the fiber bundle F, and a breathable apron 116 rotating along the attraction part 114. The compression unit 110 is located downstream of the drafting device 90 of the spinning machine and bundles the drafted fiber bundle F; a support plate 120 fixed to the roller bracket 10 and supporting the compression unit 110; and an intermediate shaft 130 for rotating the lower conveying roller 112. The support plate 120 has an opening 122 through which the intermediate shaft 130 passes. The opening 122 is configured to be smaller than the outer diameter of the bearing that supports the intermediate shaft 130 so that it can rotate, and the edge of the opening restricts the axial position of the bearing 140.

[0057] Thus, in the fiber bundle bundling device 100, a bearing 140 supporting the intermediate shaft 130 as a rotatable component can be configured with high axial precision. This intermediate shaft 130 drives the lower conveyor roller 112 that conveys the fiber bundle F to rotate.

[0058] In the fiber bundle bundling device 100 of the spinning machine of the present invention, the support plate 120 restricts the axial position of the bearing 140 from both sides of the intermediate shaft 130. Furthermore, if it is known in advance that the thrust load applied to the intermediate shaft 130 acts only in one direction, it is possible to restrict only the direction in which the thrust load is applied. Thus, the bearing 140, which supports the intermediate shaft 130 for rotation, can be configured with high precision and reliability in the axial direction.

[0059] In the fiber bundle bundling device 100 of the spinning machine of the present invention, the support plate 120 has an opening 122 through which the intermediate shaft 130 passes, and the edge of the opening contacts the housing or outer ring of the bearing 140, restricting the axial position of the bearing 140. As a result, the bearing 140, which supports the intermediate shaft 130 as a rotatable component, can be configured with high precision and reliability in the axial direction.

Claims

1. A fiber bundle bundling device for a spinning machine, comprising: A compression unit having a pair of conveying rollers consisting of an upper conveying roller and a lower conveying roller for conveying a fiber bundle, an attraction section for applying an attraction to the fiber bundle, and a breathable rubber ring rotating along the attraction section, the compression unit bundles the stretched fiber bundle together. A support plate, fixed to the roller bracket, supports the compression unit; and An intermediate shaft drives the rotation of the lower conveyor roller. The support plate has an opening through which the intermediate shaft passes. The opening is configured to be smaller than the outer diameter of the bearing, and the edge of the opening is used to restrict the axial position of the bearing.

2. The fiber bundle bundling device for a spinning machine according to claim 1, wherein, The support plate has a pair of support plates respectively fixed to both sides of the roller bracket. The pair of support plates restrict the position of the bearing from both sides of the axial direction.

3. The fiber bundle bundling device for a spinning machine according to claim 1, wherein, The opening is U-shaped and has an opening width larger than the outer diameter of the intermediate shaft for the intermediate shaft to pass through.

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