A roller device of a spinning machine and a ring spinning machine thereof

Abstract

The utility model discloses a kind of roller devices of spinning machine, it includes draft unit, every draft unit includes being equipped with multiple draft roller pairs, a pair of upper output draft roller and lower output clamping roller are equipped at the output end of multiple draft roller pairs, the outer circumferential surface of lower output clamping roller is equipped with multiple circumferential grooves, the circumferential groove is set with the rotation axis of the lower output clamping roller at angle.The design of the utility model circumferential groove, so that the contact stress distribution on the distribution of perforating belt is more uniform, effectively avoid stress concentration problem, significantly reduce the wear of perforating belt, so that excellent holding force can be maintained after long-term use, fundamentally prevent the phenomenon that perforating belt slips on roller surface.The utility model further provides a ring spinning machine, by installing above-mentioned roller device, so that it can effectively overcome the problem that belt is easy to wear and slip, to improve the stability of spinning quality.

Description

Technical Field

[0001] This utility model relates to a roller device for a textile spinning machine. Specifically, this utility model relates to the output drafting roller / clamping roller of the compact spinning device in a textile ring spinning machine. Background Technology

[0002] In textile spinning technology, a roving frame is used to transform a coarser sliver into a finer form called roving. Subsequently, in a ring spinning machine, the roving is further transformed into an even finer form called yarn. In a ring spinning machine, the drafting unit plays a crucial role in this transformation process. The drafting unit comprises multiple pairs of rollers, each pair rotating at a progressively faster speed than the preceding pair, used to draw the fine fiber sliver. These multiple pairs of rollers are respectively called steel lower rollers and rubber-coated upper rollers. There are typically three lower rollers, extending from one end of the machine to the other and driven by a transmission. These lower rollers and their bearings are supported on roller supports in the frame, arranged at a predetermined angle called the drafting angle. The upper rollers are driven by friction from the lower rollers upon contact. In addition to the three drafting rollers of the ring spinning machine's drafting unit, a fourth lower drafting roller / clamping roller, pressurized by the upper rollers, is also provided in a compact spinning unit. The lower output clamping roller drives a perforated belt running on the suction unit to produce compact spun yarn.

[0003] In known compact spinning devices, the lower output clamping rollers typically feature longitudinal grooves / grooves or knurling to provide better grip and driving force for the perforated belt. Under normal machine operation, these clamping rollers operate at high speeds. As the clamping roller speed increases, existing clamping rollers tend to exert significant stress on the perforated belt. This increased stress easily leads to frequent wear of the perforated belt. Furthermore, due to prolonged use, the gripping force is affected, and the belt may slip on the surface. These factors affect the quality of the processed material, thereby impacting the overall output of the ring spinning machine in the spinning mill.

[0004] To overcome the above shortcomings, an improved solution is needed. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a roller device for a spinning machine.

[0006] The technical solution of this utility model is:

[0007] A roller device for a spinning machine includes a drafting unit, each drafting unit including multiple pairs of drafting rollers, and a pair of upper output drafting rollers and lower output clamping rollers at the output ends of the multiple pairs of drafting rollers. The lower output clamping roller has multiple circumferential grooves on its outer circumferential surface, and the circumferential grooves are arranged at an angle to the rotation axis of the lower output clamping roller.

[0008] Furthermore, the plurality of the circumferential grooves are arranged in groups, each group containing at least four circumferential grooves, the circumferential grooves within a group are equidistantly distributed, and the group spacing is greater than the spacing between the circumferential grooves within a group.

[0009] Furthermore, each of the circumferential grooves is perpendicular to the rotation axis of the lower output clamping roller.

[0010] Furthermore, each of the circumferential grooves is inclined relative to the rotation axis of the lower output clamping roller.

[0011] Furthermore, the circumferential groove is a continuous spiral groove.

[0012] Furthermore, the depth of the circumferential groove is greater than 0.05 mm.

[0013] Furthermore, the cross-section of the circumferential groove can be any one of the following shapes: V-shaped, U-shaped, or rectangular.

[0014] Furthermore, the spinning machine is any one of a ring spinning machine, a compact spinning machine, a non-compact spinning machine, or a roving frame.

[0015] This utility model also provides a ring spinning machine, which includes at least one roller device of a spinning machine as described above.

[0016] The beneficial technical effects of this utility model are:

[0017] Compared to existing technologies that feature longitudinal grooves on the outer circumference of the roller, this invention features multiple circumferential grooves on the outer circumferential surface of the lower output clamping roller. These grooves are designed at an angle (right angle or any tilt angle) to the rotation axis of the lower output clamping roller. This design results in a more uniform distribution of contact stress on the perforated belt during high-speed operation, effectively avoiding the stress concentration problem caused by traditional longitudinal grooves. This significantly reduces wear on the perforated belt, maintaining excellent grip even after long-term use and fundamentally preventing slippage of the perforated belt on the roller surface. Furthermore, the angle between the circumferential grooves and the rotation axis of the lower output clamping roller effectively suppresses lateral slippage of the perforated belt during operation, ensuring precise material conveying.

[0018] This invention also provides a ring spinning machine, which, by installing the roller device of this invention, can effectively overcome the problems of easy belt wear and slippage caused by traditional lower output clamping rollers, thereby improving the stability of spinning quality. Attached Figure Description

[0019] Figure 1 This is a side view of a ring spinning machine;

[0020] Figure 2 This is a side view of the roller device of this utility model;

[0021] Figure 3 This is a schematic diagram of the lower output clamping roller in Example 1;

[0022] Figure 4 yes Figure 3 Enlarged view at point A;

[0023] Figure 5 This is a schematic diagram of the lower output clamping roller in Example 2;

[0024] Figure 6 This is a schematic diagram of the lower roller in Example 3.

[0025] The components include: 1. Ring spinning machine; 2. Drafting unit; 3a. Front upper roller; 3b. Front lower roller; 4a. Middle upper roller; 4b. Middle lower roller; 5a. Rear upper roller; 5b. Rear lower roller; 6a. Upper output drafting roller; 6b. Lower output clamping roller; 6c. Circumferential groove; 7. Perforated belt; 8. Suction unit. Detailed Implementation

[0026] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0027] Example 1

[0028] like Figures 2 to 4 As shown, this embodiment 1 provides a roller device for a spinning machine, including a drafting unit 2. The drafting unit 2 is provided with multiple drafting roller pairs, specifically including a front roller pair composed of a front upper roller 3a and a front lower roller 3b; a middle roller pair composed of a middle upper roller 4a and a middle lower roller 4b; and a rear roller pair composed of a rear upper roller 5a and a rear lower roller 5b.

[0029] The front lower roller 3b, middle lower roller 4a, and rear lower roller 5b are supported on roller supports by bearings, extending longitudinally along the spinning machine. Each extends from one end of the spinning machine to the other and is driven to rotate by gears or a separate motor (not shown). The front upper roller 3a, middle upper roller 4a, and rear lower roller 5a are correspondingly rotatably mounted on the front lower roller 3b, middle lower roller 4a, and rear lower roller 5b.

[0030] At the output ends of the upper rear roller 5a and the lower rear roller 5b, a lower output clamping roller 6b pressurized by the upper output drafting roller 6a is also provided. The lower output clamping roller 6b drives the perforated belt 7 to run on the suction unit 8 via friction transmission. The material is input from the front roller pair, drafted, and finally output from the upper drafting roller 6a and the lower output clamping roller 6b to produce compact spun yarn. This is prior art and will not be described in detail here.

[0031] In known compact spinning devices, the lower output clamping roller 6b typically features longitudinal grooves / grooves or knurling to enhance gripping and driving force on the perforated belt. However, when the machine operates at high speeds, the longitudinal grooves generate concentrated stress, leading to accelerated wear on the perforated belt. Furthermore, prolonged use causes a decrease in gripping force, resulting in belt slippage on the roller surface, ultimately affecting the quality of the processed material and reducing the overall production efficiency of the spinning machine.

[0032] To solve the above technical problems, such as Figure 3 As shown, the lower output clamping roller 6b provided in this embodiment 1 has a plurality of circumferential grooves 6c on its outer circumferential wall. Each of the circumferential grooves 6c is arranged in the vertical direction y, so that the circumferential grooves 6c are substantially perpendicular to the rotation axis of the lower output clamping roller 6b.

[0033] Preferably, the plurality of circumferential grooves 6c are arranged in groups, each group containing four circumferential grooves 6c, the circumferential grooves 6c in each group are equidistantly distributed, and the group spacing is greater than the spacing between the circumferential grooves 6c in each group.

[0034] More preferably, the depth of each circumferential groove 6c is greater than 0.05mm to ensure sufficient belt gripping capacity.

[0035] Furthermore, the cross-section of the circumferential groove 6c can be any shape among V-shape, U-shape, and rectangle. For example... Figure 4 As shown in the figure, the cross-section of the circumferential groove 6c in this embodiment 1 is illustrated in a V-shape.

[0036] Compared to traditional longitudinal grooves, the 6c circumferential groove design of this invention results in a more uniform distribution of contact stress on the perforated belt, effectively avoiding the stress concentration problem caused by traditional longitudinal grooves. This significantly reduces wear on the perforated belt, allowing it to maintain excellent grip even after long-term use and fundamentally preventing slippage of the perforated belt on the roller surface. Furthermore, the circumferential groove is angled to the rotation axis of the lower output clamping roller, effectively suppressing lateral slippage of the perforated belt during operation and ensuring precise material conveying path.

[0037] Example 2

[0038] like Figure 5As shown, compared with Embodiment 1, the basic structure and working principle of Embodiment 2 are the same as those of Embodiment 1. The only difference is that the circumferential groove 6c on the outer circumferential wall of the lower output clamping roller 6b is set at an inclined angle relative to the rotation axis of the lower output clamping roller 6b.

[0039] The tilt angle and tilt direction (such as left-hand or right-hand rotation) can be designed and adjusted according to actual application requirements, and there are no particular limitations. This embodiment 2 is shown with the tilt direction facing right.

[0040] In this embodiment 2, the multiple circumferential grooves 6c are also arranged in groups. Each group includes four circumferential grooves 6c arranged at an inclined angle. The circumferential grooves 6c in the group are equidistantly distributed, and the group spacing is greater than the spacing between the circumferential grooves 6c in the group.

[0041] Example 3

[0042] like Figure 6 As shown, compared with Embodiment 2, the basic structure and working principle of Embodiment 3 are the same as those of Embodiment 2. The only difference is that: the outer circumferential wall of the lower output clamping roller 6b is provided with multiple circumferential grooves 6c, and the multiple circumferential grooves 6c are continuous spiral grooves.

[0043] Similarly, the helix angle (i.e., tilt angle) and the direction of rotation (such as left-hand or right-hand) of the continuous helical groove can be designed and adjusted according to actual application requirements, and there are no particular limitations. This embodiment 3 uses the left-hand direction as an example, but it should not be construed as a limitation of this utility model.

[0044] Example 4

[0045] like Figure 1 As shown, this utility model also provides a ring spinning machine 1. The ring spinning machine 1 includes at least one roller device as described in any one of Embodiments 1, 2, and 3, namely, a lower output clamping roller with a circumferential groove 6c.

[0046] Specifically, the ring spinning machine in this embodiment 4 includes two roller devices, which are arranged side by side along the material processing path to form a complete and efficient spinning system.

[0047] The ring spinning machine can be either a compact spinning machine or a non-compact spinning machine. By installing the roller device of this invention, the ring spinning machine can effectively overcome the problems of easy belt wear and slippage caused by the longitudinal grooves on the traditional lower output clamping roller, thereby improving the stability of spinning quality.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A roller assembly for a spinning machine, comprising a drafting unit (2), each drafting unit (2) comprising a plurality of drafting roller pairs, wherein an upper output drafting roller (6a) and a lower output clamping roller (6b) are provided at the output ends of the plurality of drafting roller pairs, characterized in that, The lower output clamping roller (6b) has a plurality of circumferential grooves (6c) on its outer circumferential surface, and the circumferential grooves (6c) are set at an angle to the rotation axis of the lower output clamping roller (6b).

2. The roller device of a spinning machine according to claim 1, characterized in that, The plurality of the circumferential grooves (6c) are arranged in groups, each group containing at least four circumferential grooves (6c), the circumferential grooves (6c) within the group are equidistantly distributed, and the group spacing is greater than the spacing between the circumferential grooves (6c) within the group.

3. The roller device of a spinning machine according to claim 2, characterized in that, Each of the circumferential grooves (6c) is perpendicular to the rotation axis of the lower output clamping roller (6b).

4. The roller device of a spinning machine according to claim 2, characterized in that, Each of the above The circumferential groove (6c) is inclined relative to the rotation axis of the lower output clamping roller (6b).

5. The roller device of a spinning machine according to claim 1, characterized in that, The circumferential groove (6c) is a continuous spiral groove.

6. The roller device of a spinning machine according to claim 1, characterized in that, The depth of the circumferential groove (6c) is greater than 0.05 mm.

7. The roller device of a spinning machine according to claim 1, characterized in that, The cross-section of the circumferential groove (6c) can be any one of V-shape, U-shape, or rectangle.

8. The roller device of a spinning machine according to claim 1, characterized in that, The spinning machine is any one of the following: ring spinning machine, compact spinning machine, non-compact spinning machine, and roving machine.

9. A ring spinning machine, characterized in that, Includes at least one roller device of a spinning machine as described in any one of claims 1-8.

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