A fiber bundle gathering device for a spinning machine

Abstract

A fiber bundle bunching device of a spinning machine is provided. In a sub shaft that drives a rotation axis of a delivery down roller of a fiber bundle, a driving gear is rapidly replaced. A compression unit (110) that has a rotation axis (111) that rotates a delivery down roller (112) that delivers a fiber bundle (F) and bunches the fiber bundle (F) that has been subjected to drafting, and a sub shaft (130) that drives the rotation axis (111) are provided, a driven gear (113) that receives driving from the sub shaft (130) is installed on the rotation axis (111), a driving gear (132) that meshes with the driven gear (113) is installed on the sub shaft (130), a plurality of sub shafts (130) correspond to a plurality of compression units (110) and are linked by a coupling (150), in a case where a width of the driving gear (132) is set to (W) and a spacing of end portions of the sub shafts (130) that are linked to each other by the coupling (150) is set to (d), W > d ≥ (1 / 4) · W is satisfied.

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 are 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 a secondary shaft for rotating a rotating shaft equipped with a transport lower roller that delivers the fiber bundle. Furthermore, a drive gear on the secondary shaft meshes with a driven gear on the rotating shaft to transmit torque from the secondary shaft to the rotating shaft.

[0004] In a fiber bundle bundling device, the relationship between a rotating shaft that carries a lower roller and a secondary shaft that transmits torque to the rotating shaft is proposed in Patent Document 1 below.

[0005] Patent Document 1: European Patent Publication No. EP1473388

[0006] In a spinning machine, multiple fiber bundle bundling devices are arranged side by side as a single unit, and further, multiple units are arranged side by side. In the spinning machine, the fiber bundle bundling devices corresponding to these multiple units are configured by connecting multiple countershafts with drive gears.

[0007] For drive gears located on the secondary shaft, damage and wear caused by foreign objects getting caught during operation sometimes require temporary or periodic replacement.

[0008] When replacing the drive gear, there is a method where a series of sub-shafts, consisting of multiple units, are removed from the spinning machine before the gear is replaced. In this case, it is necessary to remove and reassemble the series of sub-shafts after the drive gear replacement, requiring a significant amount of time for the drive gear replacement operation. As a result, the spinning machine's downtime increases, leading to a decrease in productivity.

[0009] On the other hand, there is also a method of constructing the drive gear in half and removing it by dividing the drive gear of the object to be replaced. In this case, the cost of the components increases because the drive gear is constructed in half, it is difficult to achieve rotational balance of the drive gear, and problems such as reduced reliability due to loosening of fastening threads also occur.

[0010] Patent Document 1 does not consider the replacement of the drive gear for the secondary shaft. Therefore, it is desirable to replace the drive gear for the secondary shaft quickly without reducing the productivity of the spinning machine or using special parts. Summary of the Invention

[0011] This disclosure was made in view of the above-mentioned problems, and the object is to provide a fiber bundle bundling device for a spinning machine, in which the drive gear can be quickly replaced without the use of special parts and without reducing productivity in the secondary shaft that drives the rotation of the lower roller that transports the fiber bundle.

[0012] The disclosed fiber bundle bundling device for a spinning machine comprises: a compression unit having a lower transport roller disposed on a rotating shaft and conveying the fiber bundle, a suction section that attracts the fiber bundle, a breathable ring rotating along the suction section, and an upper transport roller rotating together with the lower transport roller pressed by the breathable ring, wherein the compression unit bundles the drafted fiber bundle; and a secondary shaft that drives the rotating shaft. In this fiber bundle bundling device, a driven gear that receives drive from the secondary shaft is mounted on the rotating shaft, and a drive gear that meshes with the driven gear is mounted on the secondary shaft. Multiple secondary shafts correspond to multiple compression units and are connected by couplings. When the width of the drive gear is set to W and the interval between the ends of the secondary shafts connected to each other by the couplings is set to d, W>d≥(1 / 4)·W is satisfied.

[0013] Preferably, in the fiber bundle bundling device of the disclosed spinning machine, when the width of the drive gear is set to W and the interval between the ends of the secondary shafts connected to each other by the coupling is set to d, W>d≥(1 / 2)·W is satisfied.

[0014] According to the disclosure, the drive gears can be quickly replaced in the secondary shaft that drives the rotation of the lower roller transporting the fiber bundle without using special components or reducing productivity. That is, up to four couplings can be removed, and the secondary shaft can be offset axially only. Therefore, compared with the existing method of removing a series of secondary shafts of multiple units from the spinning machine, the workability is significantly improved. Attached Figure Description

[0015] Figure 1 This is a structural diagram showing the structure of the fiber bundle bundling device of the spinning machine in Embodiment 1.

[0016] Figure 2 This is an explanatory diagram showing the situation where the drive gear of the secondary shaft is replaced in the fiber bundle gathering device of the spinning machine in Embodiment 1.

[0017] Explanation of reference numerals in the attached figures

[0018] 100... Fiber bundle bundling device; 110... Compression unit; 111... Rotary shaft; 112... Lower conveyor roller; 113... Driven gear; 114... Suction unit; 116... Ventilation ring; 118... Upper conveyor roller; 119... End plug; 120... Support plate; 130, 130a, 130b, 130c... Countershaft; 132, 132a... Drive gear; 140... Bearing; 150, 150a, 150b... Coupling; F... Fiber bundle. Detailed Implementation

[0019] The following description uses the accompanying drawings to illustrate an embodiment of the fiber bundle bundling device for a spinning machine. Furthermore, the same reference numerals are used to label the same parts in each drawing.

[0020] Implementation method 1.

[0021] 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. Here, Figure 1 (a) indicates the fiber bundle bundling device 100. Figure 1 (b) represents the secondary shaft 130 in the fiber bundle bundling device 100.

[0022] [Structure of fiber bundle bundling device]

[0023] A fiber bundle bundling device 100 is located downstream of a drafting device (not shown) to pre-bundle the drafted fiber bundles before twisting, thereby reducing fuzz and other defects. Here, the drafting device is located downstream of... Figure 1 (a) is the inner side of the paper in the vertical direction. The fiber bundle is processed by the fiber bundle bundling device 100 and is oriented towards... Figure 1 (a) is conveyed below and on the outside of the vertical direction of the paper.

[0024] like Figure 1 As shown in (a), the fiber bundle bundling device 100 mainly includes a compression unit 110, a support plate 120, and a secondary shaft 130.

[0025] The compression unit 110 is provided with a rotating shaft 111, a lower conveying roller 112, a suction part 114, a breathable leather ring 116, an upper conveying roller 118, and an end plug 119.

[0026] Multiple transport rollers 112 and driven gears 113 are arranged on the rotating shaft 111. A drive gear 132 is arranged on the secondary shaft 130. The driven gears 113 of the rotating shaft 111 are rotated by the drive gears 132 of the secondary shaft 130. That is, the driven gears 113 that receive drive from the secondary shaft 130 are mounted on the rotating shaft 111. With the rotation of the driven gears 113, the transport rollers 112 rotate together with the rotating shaft 111, thereby driving the ventilation ring 116 to rotate and transport the fiber bundle F.

[0027] The suction section 114 has multiple suction holes. The suction section 114 provides suction to the conveyed fiber bundle F via a breathable apron 116. The breathable apron 116 is formed of a ring-shaped fabric that ensures breathability and is wound around the lower transport roller 112, the suction section 114, and a guide section (not shown). The upper transport roller 118 rotates together with the lower transport roller 112, which is pressed together by the breathable apron 116, to convey the fiber bundle F.

[0028] Eight compression units 110, each containing eight spindles, are arranged between adjacent support plates 120. Along the long side of the machine, multiple compression unit groups, each containing eight spindles, are arranged in a continuous arrangement. A rotating shaft 111 is formed to a predetermined length corresponding to the eight-spindle compression unit groups. End plugs 119 are provided at both ends of the rotating shaft 111. The end plugs 119 support the rotating shaft 111 in a rotatable state against the support plates 120. The support plates 120 are fixed to a roller frame (not shown).

[0029] The auxiliary shaft 130 is formed to a predetermined length corresponding to a compression unit group of eight spindles. The auxiliary shaft 130 is supported by a roller frame (not shown) via bearings 140. A drive gear 132 is mounted on the auxiliary shaft 130, meshing with a driven gear 113 of the rotating shaft 111. The auxiliary shaft 130 drives the rotating shaft 111 via the drive gear 132 and the driven gear 113. Along the long side of the machine, multiple auxiliary shafts 130 are connected via couplings 150 corresponding to multiple compression unit groups.

[0030] The fiber bundle F is held by the lower transport roller 112 and the upper transport roller 118, which rotate with the rotation of the rotating shaft 111 driven by the secondary shaft 130, and is attracted and transported by the suction section 114 via the breathable ring 116.

[0031] Sometimes, depending on the spinning conditions, the reaction force of the drive gear 132 increases. Therefore, the mounting position of the drive gear 132 on the countershaft 130 needs to be determined between the first and second spindles counted from the roller frame or support plate 120. In this case, the coupling 150 can also be positioned between the second and third spindles counted from the support plate 120 and roller frame. As described above, by selecting the position between the coupling 150 in the countershaft 130 or between the drive gear 132 and the coupling 150, the wobbling and bending of the countershaft 130 can be reduced, and the impact on yarn quality can be minimized.

[0032] In implementation method 1, such as Figure 1 As shown in (b), the width of the drive gear 132 is set to "W". The spacing between the ends of the secondary shafts 130 connected to each other by the coupling 150 is set to d. The coupling 150 can connect the secondary shafts 130 to each other by tightening bolts or the like, and can disconnect the connection of the secondary shafts 130 by loosening the bolts or the like.

[0033] In Embodiment 1, the configuration is such that when the number of releases n of the coupling 150 is 4, the condition W > d ≥ (1 / n), i.e., W > d ≥ (1 / 4)·W, is satisfied. Preferably, when the number of releases of the coupling 150 is set to 3, the condition W > d ≥ (1 / 3)·W is satisfied. More preferably, when the number of releases of the coupling 150 is set to 2, the condition W > d ≥ (1 / 2)·W is satisfied.

[0034] [Steps for replacing the drive gear]

[0035] Next, refer to Figure 2 The replacement of the drive gear 132 located on the secondary shaft 130 will be explained. Figure 2 This is an explanatory diagram showing the situation where the drive gear 132 of the secondary shaft 130 is replaced in the fiber bundle gathering device 100 of the spinning machine in Embodiment 1.

[0036] exist Figure 2 In (a), it is shown that three secondary shafts 130a, 130b, and 130c are connected by couplings 150a and 150b, respectively. A drive gear 132a is mounted on the secondary shaft 130a.

[0037] Here, regarding the replacement of drive gear 132a, a specific example is given when the number of couplings 150 to be released in the conditional expression is set to 2. Here, drive gear 132a, which is to be replaced, is removed from the position of coupling 150a. Therefore, both couplings 150a and 150b become the objects of fastening release.

[0038] Figure 2 In (b), it is shown that the connection of the three auxiliary shafts 130a, 130b, and 130c has been opened by releasing the fastening of couplings 150a and 150b. Here, the state in which couplings 150a and 150b have been removed from the three auxiliary shafts 130a, 130b, and 130c is shown by dashed lines.

[0039] Figure 2 In (c), the position of the auxiliary shaft 130b, which is opened by releasing the fastening of the two couplings 150a and 150b, is shifted axially to the opposite side of the drive gear 132a that is replacing the object. That is, the auxiliary shaft 130b is shifted axially to fill the gap d in the area where the coupling 150b exists.

[0040] As a result, the interval d in the region where coupling 150a exists is added to the interval d in the region where coupling 150b exists. That is, a gap of d + d = 2d is generated between the secondary shaft 130a and the secondary shaft 130b.

[0041] Here, if we decompose the conditional expression of W>d≥(1 / 2)·W, then W>d and W≤2d.

[0042] That is, the width W of the drive gear 132a is greater than the gap d between the ends of the secondary shafts 130a and 130b connected by the coupling 150a. Therefore, if only the coupling 150a is loosened, the drive gear 132a cannot pass through the gap d, and thus the drive gear 132a cannot be removed.

[0043] On the other hand, in such Figure 2 In the case where the gap between the secondary shaft 130a and the secondary shaft 130b is expanded to 2d as in (c), W≤2d, therefore, the drive gear 132a with a width of W can pass through the gap of the expanded 2d gap between the secondary shaft 130a and the secondary shaft 130b.

[0044] For example, specific values ​​for this state could be W = 20 mm and d = 17 mm. A drive gear 132a with a width of 20 mm can pass through a gap that expands to twice the size of a 2d = 34 mm interval.

[0045] Based on the above, such as Figure 2 As in (d), by releasing the fastening of couplings 150a and 150b and moving the axial direction of the secondary shaft 130b, the drive gear 132a can be moved along the direction of the secondary shaft 130b, and then only the drive gear 132a can be removed from the expanded gap 2d.

[0046] Then, by taking measures such as Figure 2By following the reverse steps of (d), (c), (b), and (a), the new drive gear 132a can be installed in the original position of the countershaft 130a, allowing the fiber bundle gathering device 100 of the spinning machine to quickly return to an operational state. In this case, the two smallest couplings 150 can be removed and installed, resulting in good workability.

[0047] That is, in the secondary shaft 130 that drives the rotation of the lower roller 112 that transports the fiber bundle F, special components such as a half-split drive gear are not used, and the multiple secondary shafts 130 connected as a whole are not removed from the machine, so as not to reduce productivity. Only the drive gear 132a is removed and quickly replaced.

[0048] In the specific examples above, the condition W > d ≥ (1 / 2)·W was explained so that the number of couplings 150 removed is at least 2. In addition, the condition W > d ≥ (1 / 3)·W is also applicable when the number of couplings 150 removed is 3, and when the number of couplings 150 removed is 4.

[0049] Here, the case of W>d≥(1 / 3)·W is explained. In this case, the fastening of the three couplings 150 connecting the two secondary shafts 130 is released. Then, the position of the two connected secondary shafts 130 is opened by releasing the fastening of the three couplings 150, so that the drive gear 132 of the replacement object is offset axially in a manner that expands the predetermined area for removal.

[0050] As a result, the interval 2d generated by offsetting the two secondary shafts 130 is added to the interval d in the region near the drive gear 132. That is, an expanded gap of 3d is generated in the predetermined area for removing the drive gear 132 of the replacement object.

[0051] When the gap between the drive gear 132a and the secondary shaft 130 is expanded to 3d, W ≤ 3d. Therefore, the width W of the drive gear 132a can pass through the gap of 3d generated between the secondary shaft 130a and the secondary shaft 130b.

[0052] For example, specific values ​​for this state could be W = 20mm and d = 8mm. A drive gear 132 with a width of 20mm cannot pass through the original 8mm gap, but can pass through a gap that has been expanded to 3 times the width, 3d = 24mm.

[0053] Detailed explanation omitted, but when the number of removed couplings 150 is 4 and W > d ≥ (1 / 4)·W, the drive gear 132 can still be easily replaced. Specific values ​​for this state could be, for example, W = 20mm and d = 6mm. Therefore, it is effective when the difference between W and d is large, or when d is small. The 20mm wide drive gear 132 cannot pass through the original 6mm gap, but it can pass through a gap expanded to 4 times, 4d = 24mm.

[0054] Furthermore, by determining the value or coefficient in a manner that satisfies one of the above conditions W>d≥(1 / 2)·W, W>d≥(1 / 3)·W, and W>d≥(1 / 4)·W, it is possible to quickly replace the drive gear 132 in the fiber bundle bundling device 100 on the secondary shaft 130 that drives the rotation of the lower roller 112 that transports the fiber bundle F without using special parts and without reducing productivity.

[0055] That is, when replacing the drive gear 132, only 2 to 4 couplings 150 need to be disconnected and 1 to 3 secondary shafts 130 need to be moved. Therefore, it will not affect other areas.

[0056] Therefore, at most four couplings 150 can be removed to offset the secondary shaft 130 axially, thus significantly improving workability compared to existing methods that involve pulling out a series of secondary shafts 130 from the spinning machine in multiple units.

[0057] [Other Implementation Methods]

[0058] The coupling 150 has an unbalanced rotational characteristic due to its construction. Because of this unbalanced rotational characteristic, the secondary shaft 130 sometimes wobbles during rotation. Therefore, it is desirable for the coupling 150 to be located near the bearing 140 that supports the secondary shaft 130. On the other hand, due to machine layout constraints, there is a yarn path that serves as the path for the fiber bundle F at a position approximately ±30 mm centered on the roller frame where the bearing 140 is fixed. Therefore, it is necessary to position the coupling 150 away from the yarn path.

[0059] If the unbalanced force of the coupling 150 is greater than the reaction force of the drive gear 132, the coupling 150 can also be set between the first spindle and the second spindle.

[0060] [Effects obtained through implementation methods]

[0061] As explained above, the following effects can be obtained according to the implementation method.

[0062] The fiber bundle bundling device 100 of the spinning machine disclosed herein is configured to include: a compression unit 110 having a transport lower roller 112 disposed on a rotating shaft 111 and transporting a fiber bundle F, an attraction part 114 that attracts the fiber bundle F, and a breathable ring 116 that rotates along the attraction part 114; the compression unit 110 bundles the over-drafted fiber bundle F; and a secondary shaft 130 that drives the rotating shaft 111, a driven gear 113 that receives drive from the secondary shaft 130 is mounted on the rotating shaft 111, and a drive gear 132 that meshes with the driven gear 113 is mounted on the secondary shaft 130; a plurality of secondary shafts 130 correspond to a plurality of compression units 110 and are connected by a coupling 150; when the width of the drive gear 132 is set to W, and the interval between the ends of the secondary shafts 130 connected to each other by the coupling 150 is set to d, W>d≥(1 / 4)·W is satisfied.

[0063] Therefore, in the fiber bundle bundling device 100, the drive gear 132 can be quickly replaced without using special parts and without reducing productivity in the secondary shaft 130 that drives the rotation of the lower roller 112 that transports the fiber bundle F. Moreover, at most four couplings 150 need to be removed and the secondary shaft 130 needs to be offset axially, thus significantly improving workability compared to the existing method of removing a series of secondary shafts 130 in multiple units from the spinning machine.

[0064] Preferably, in the fiber bundle bundling device 100 of the disclosed spinning machine, when the width of the drive gear 132 is set to W and the interval between the ends of the secondary shafts 130 connected by the coupling 150 is set to d, W > d ≥ (1 / 2)·W is satisfied. In this case, at least two couplings 150 are removed, and only one secondary shaft 130 is axially offset. Therefore, compared with the existing method of removing a series of secondary shafts of multiple units from the spinning machine, the workability is significantly improved. Thus, the drive gear 132 can be quickly replaced without using special parts and without reducing productivity. Moreover, in the fiber bundle bundling device 100 of the spinning machine, the effects of replacing the drive gear 132 can be eliminated for areas other than the secondary shafts 130 that are opened by disengaging the couplings 150.

Claims

1. A fiber bundle bundling device for a spinning machine, characterized in that, have: A compression unit having a lower transport roller disposed on a rotating shaft and transporting a fiber bundle, a suction section that attracts the fiber bundle, a breathable ring that rotates along the suction section, and an upper transport roller that rotates together with the lower transport roller pressed by the breathable ring, the compression unit bundling the stretched fiber bundle. and A secondary shaft, formed to a predetermined length corresponding to a compression unit group, is connected in a manner corresponding to multiple compression unit groups along the long side of the machine tool. This secondary shaft drives the rotating shaft. A driven gear, which receives drive from the secondary shaft, is mounted on the rotating shaft. A drive gear that meshes with the driven gear is mounted on the secondary shaft. The plurality of said secondary shafts correspond to the plurality of said compression units and are connected by couplings. When the width of the drive gear is set to W and the distance between the ends of the secondary shafts connected to each other by the coupling is set to d, W>d≥(1 / 4)・W is satisfied.

2. The fiber bundle bundling device for a spinning machine according to claim 1, characterized in that, When the width of the drive gear is set to W and the distance between the ends of the secondary shafts connected to each other by the coupling is set to d, W>d≥(1 / 2)・W is satisfied.

Images