Elasthzer yarn unwinding arm and elasthzer yarn unwinding unit for a texturing machine

Abstract

The utility model discloses a kind of spandex unwinding arm and spandex unwinding unit of elasticizer, belong to textile equipment technical field.Unwinding arm includes unwinding branch, driving motor, spandex unwinding wheel and transmission assembly, unwinding arm main body is rotatable with spandex sleeve double layer, cooperation handle, limit block and feeler, transmission assembly adopts the belt drive with tension pulley, cover plate is set heat dissipation long hole.Unwinding unit is modularized integrated by spandex crossbeam to unwinding arm, and is installed in the upper portion of two rollers of elasticizer.The design shortens spandex silk road 40%, reduces sharp turn, by the aid of single spindle drive and dynamic angle adjustment, make broken end rate reduce 71.2%, tension fluctuation is controlled within ±0.07cN, while improve maintenance convenience, satisfy high-grade fabric processing demand.

Description

Technical Field

[0001] This utility model relates to the field of textile equipment technology, and in particular to a spandex unwinding arm and spandex unwinding unit for a texturing machine. Background Technology

[0002] In the textile processing field, texturing machines are the core equipment for achieving elastic processing of spandex yarn. Their core function is to endow spandex yarn with specific elastic properties through mechanical stretching and deformation. As a key component of the texturing machine, the spandex unwinding unit is responsible for the stable transport of spandex yarn from the yarn bobbin to the processing area. The rationality of its structural design and the scientificity of its layout directly determine the stability of the unwinding tension, the smoothness of the yarn guide, and the quality of subsequent texturing.

[0003] In existing technologies, the spandex filament carriers of traditional texturing machines are generally installed in a low position, fixed in the equipment base area directly below the first roller. This layout results in a complex spatial detour structure for the spandex filament's path: the spandex filament must be drawn from the spool, travel upwards around the first roller, and then turn towards the side filament component below the cold rail, undergoing multiple turns before entering the subsequent processing area. Actual calculations show that the total length of this guide path is 7-8 meters, including 5 sharp turns with angles less than 90°. Especially in the narrow space formed by the curved surface of the first roller and the cold rail support structure, the radius of curvature of the guide path is only 15-20mm, causing the contact angle between the spandex filament and components such as the guide eye and the thread hook to exceed 270°, increasing the coefficient of friction by more than 3 times compared to the straight guide state.

[0004] The technical problems caused by the high coefficient of friction are significant in actual production: On the one hand, the local stress experienced by spandex yarn at frequent sharp turns exceeds the material's fracture strength threshold, resulting in a high breakage rate during production, and in severe cases, causing the entire equipment to be shut down for repair; on the other hand, the complex spatial guide yarn path requires maintenance personnel to frequently disassemble the cold rail protective cover and the peripheral components of the roller, resulting in excessively long maintenance times and difficulty in accurately locating worn guide yarn components in a confined space, thus reducing the overall utilization rate of the equipment. More importantly, the unstable frictional resistance causes the tension fluctuation of the spandex yarn to exceed ±0.3cN, directly affecting the uniformity of fiber stretching in subsequent texturing processes, resulting in excessively high elasticity unevenness of the finished yarn, which cannot meet the processing requirements of high-end knitted fabrics.

[0005] To address the aforementioned issues, existing technologies have attempted improvements by optimizing the surface coating of the guide wire components (such as using diamond-like carbon coatings to reduce the coefficient of friction) and adding tension compensators in the path. However, these improvements only target local friction points or tension fluctuations, failing to address the overall layout defects of the spandex unwinding unit—the long, circuitous guide wire path caused by the low-position installation of the yarn frame and the multi-turn structure remain unchanged. Therefore, core parameters such as guide wire path length and the number of sharp turns remain the same, and the problems of friction coefficient and tension fluctuations cannot be fundamentally solved. How to shorten and straighten the guide wire path through structural innovation and layout optimization of the unwinding unit has become a pressing technical challenge in this field. Utility Model Content

[0006] In view of this, this utility model proposes a spandex unwinding arm and spandex unwinding unit for a texturing machine. By adopting a brand-new spandex unwinding unit and designing its central position on the texturing machine, the spandex system is moved from below the first roller to the lower part of the maintenance platform and the upper part of the second roller. At the same time, the position of the motor and the overall structure of the spandex unwinding arm are improved. By using a single-spindle motor drive, the spandex yarn length is shortened by 40%, the breakage rate is reduced by 71.2%, and the tension fluctuation is controlled within ±0.07cN.

[0007] To achieve the above effects, the technical solution of this utility model is implemented as follows, specifically involving two aspects:

[0008] On one hand, a spandex unwinding arm for a texturing machine includes an unwinding support arm, a transmission component cover plate, a drive motor, a spandex unwinding wheel, a transmission component, and the spandex unwinding arm. The drive motor is fixed on the unwinding support arm, the spandex unwinding wheel is disposed on the unwinding support arm, the transmission component is disposed on the unwinding support arm, the output end of the drive motor is connected to the transmission component, the spandex unwinding wheel is connected to the transmission component, the transmission component cover plate is disposed on the transmission component, and the spandex unwinding arm is disposed on the unwinding support arm, with the spandex unwinding arm and the spandex unwinding wheel positioned in tandem. In this spandex unwinding arm of the texturing machine, the drive motor, as a power source, is fixed on the unwinding support arm, and its output end is connected to the transmission component, transmitting the motor's power to the transmission component. The transmission component is connected to the spandex unwinding wheel, thereby transmitting power to the spandex unwinding wheel and driving the spandex unwinding wheel to rotate. The spandex unwinding arm is mounted on the unwinding support arm and is positioned in conjunction with the spandex unwinding wheel. The rotation of the spandex unwinding wheel drives the spandex unwinding arm to perform corresponding actions, thereby completing the unwinding operations of the spandex yarn. A transmission component cover is mounted on the transmission component to protect it.

[0009] In a structure that optimizes the aforementioned solution, the spandex unwinding arm includes an unwinding arm body and a spandex sleeve. The unwinding arm body is rotatably mounted on the unwinding support arm, and the spandex sleeve is rotatably mounted on the unwinding arm body. The spandex sleeve is positioned in conjunction with the spandex unwinding wheel. Through this double-layer rotatable structure of the unwinding arm body and the spandex sleeve, dynamic angle adjustment during the spandex yarn unwinding process is achieved. This allows the spandex sleeve to adaptively rotate with the spandex unwinding wheel, reducing frictional resistance between the yarn and the wheel and ensuring uniform tension during unwinding. The rotatable design also provides operational flexibility for yarn bobbin replacement and path calibration, avoiding the yarn wear or sudden tension changes caused by angular deviations in traditional fixed structures.

[0010] Furthermore, the spandex unwinding arm also includes a handle, which is mounted on the unwinding arm body. The handle provides a physical fulcrum for manual operation, facilitating manual control of the unwinding arm body's position. During equipment debugging, yarn spool installation, or troubleshooting, the handle allows control of the unwinding arm body's position, improving operational convenience and maintenance efficiency, and avoiding safety risks associated with direct contact with rotating parts.

[0011] In a structure that optimizes the aforementioned solution, the transmission assembly includes a motor drive pulley, a transmission belt, and a drive pulley. The motor drive pulley is connected to the output end of the drive motor, and the drive pulley is connected to the spandex unwinding arm. The transmission belt wraps around the motor drive pulley and the drive pulley. A belt drive mechanism is used to transmit power from the drive motor to the unwinding arm. The elastic buffering characteristics of the belt reduce vibration and impact during transmission, avoiding sudden tension changes that may occur with rigid transmission. This structure also has overload protection (belt slippage) to prevent damage to the motor or unwinding components due to abnormal conditions such as yarn jamming. Furthermore, the belt drive structure is simple, has low maintenance costs, and is easy to replace and adjust later.

[0012] Furthermore, the transmission assembly also includes a tensioner pulley, which is mounted on the unwinding support arm and engages with the transmission belt. The tensioner pulley dynamically adjusts the tension of the transmission belt, ensuring stable transmission efficiency during long-term operation and preventing power transmission failure or speed fluctuations due to belt slack. By maintaining constant belt tension, the rotational speed accuracy of the spandex unwinding pulley can be guaranteed, thereby controlling the uniformity of the spandex yarn unwinding speed and reducing the impact of tension fluctuations on yarn quality from the transmission stage.

[0013] In a structure that optimizes the aforementioned solution, a limiting block is also included. The limiting block is fixed to the unwinding arm and its position mates with the unwinding arm body. The limiting block limits the rotation range of the unwinding arm body, preventing excessive rotation from causing the spandex yarn path to deviate from the preset trajectory or from interfering with or colliding with surrounding components (such as rollers and cooling rails). Mechanical limiting ensures that the unwinding arm moves within a safe working range, improving the reliability of equipment operation and preventing structural damage caused by operational errors or transmission malfunctions.

[0014] In a structure that optimizes the aforementioned solution, a yarn detector is also included. The yarn detector is fixed to the unwinding support arm and positioned below the spandex unwinding wheel. The yarn detector is used to monitor the operating status of the spandex yarn in real time. When yarn breakage, yarn entanglement, or unwinding abnormalities occur, the yarn detector can quickly trigger a stop signal or alarm device, preventing quality defects in subsequent processes caused by untimely handling of broken yarns, such as empty spindle operation or yarn knotting. This design improves the intelligent monitoring level of the equipment, reduces the burden of manual inspection, and lowers the scrap rate.

[0015] In a structure that optimizes the aforementioned solution, the transmission component cover has several through-holes. The through-holes serve a dual purpose: protection and functional optimization. On one hand, the cover provides physical protection for the transmission component, preventing foreign objects from entering or operators from contacting rotating parts. On the other hand, the through-holes meet the heat dissipation requirements of the transmission component, preventing heat buildup from prolonged motor operation that could lead to component aging. Simultaneously, they provide an observation window for visual inspection or localized adjustment of belt tension, allowing for simple maintenance without disassembling the cover.

[0016] On the other hand, there is a spandex unwinding unit, comprising several texturing machine spandex unwinding arms and spandex crossbeams. The texturing machine spandex unwinding arms are fixed side-by-side on the spandex crossbeams. The spandex crossbeams are fixed to the upper part of the two rollers of the texturing machine. The spandex crossbeams integrate the single-spindle unwinding arms into a modular unit and place it on the upper part of the two rollers, achieving a centrally located unwinding unit design. This layout shortens the guide path of the spandex yarn from the unwinding arm to the subsequent processing area, reducing the number of detours and sharp turns, and fundamentally solving the core problems of long paths and high friction in existing technologies. Simultaneously, the modular design facilitates the installation, commissioning, and single-spindle maintenance of the entire equipment, improving equipment integration and space utilization.

[0017] Compared with the prior art, the spandex unwinding arm and spandex unwinding unit of the texturing machine described in this utility model have the following specific advantages:

[0018] This invention addresses the problems of existing technologies, such as long guide paths (7-8 meters with 5 sharp turns), high friction coefficients, breakage rates (up to 0.8 times / hour / spindle position), tension fluctuations exceeding ±0.3cN, and maintenance time exceeding 40 minutes, through innovative layout and structural optimization of the spandex unwinding unit. The unwinding unit is centrally located above the two rollers, combined with a single-spindle motor-driven unwinding arm structure, reducing the spandex yarn path length by 40% to 4-5 meters and decreasing the number of sharp turns. The double-layer rotatable structure of the unwinding arm body and the spandex sleeve enables dynamic adaptive adjustment of the yarn angle, reducing the contact wrap angle and friction coefficient. By shortening the path, reducing inflection points, optimizing the belt drive system, and using a yarn detector to monitor yarn breakage and trigger shutdown protection in real time, the breakage rate is reduced by 71.2%, improving equipment operational stability. The centralized layout also reduces resistance accumulation. The tensioning and tightening rollers ensure the accuracy of the unwinding roller's rotation speed, and the rotatable structure dynamically calibrates the yarn path, controlling tension fluctuations within ±0.07cN, thus improving the elasticity uniformity of the finished yarn to meet the requirements of high-end fabrics. The unwinding arm is integrated into a modular unit fixed to the open space above the two rollers via a spandex beam. Combined with the long hole design of the unwinding arm handle, limit block, and transmission component cover, maintenance is achieved without disassembling surrounding components, reducing single-spindle maintenance time by more than 60%, while also meeting the needs for heat dissipation and visual maintenance. The yarn probe monitors the yarn status in real time, and the limit block and tensioning roller ensure the safe operation of the unwinding arm, improving the equipment's intelligence and reliability. Overall, breakthroughs have been achieved in key indicators such as guide path length, breakage rate control, tension stability, and maintenance convenience, effectively solving the core problems of traditional unwinding units and possessing significant economic benefits and industrial application value. Attached Figure Description

[0019] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure and operation of the spandex unwinding arm of the texturing machine described in this utility model.

[0021] Figure 2 This is a schematic diagram of the spandex unwinding unit structure described in this utility model.

[0022] Figure 3 This is a schematic diagram showing the installation position of the spandex unwinding unit described in this utility model on the texturing machine.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Unwinding support arm; 2. Transmission component cover plate; 3. Drive motor; 4. Spandex unwinding wheel; 5. Transmission component; 6. Spandex unwinding arm; 7. Limiting block; 8. Wire probe; 9. Spandex crossbeam.

[0025] 51. Motor drive wheel; 52. Drive belt; 53. Drive pulley; 54. Tensioner pulley.

[0026] 61. Unwinding arm body; 62. Spandex sleeve; 63. Handle.

[0027] A. Installation position of the spandex unwinding unit on the texturing machine Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] like Figure 1-3As shown, the present invention discloses a spandex unwinding arm for a texturing machine. The unwinding arm 1 is a zigzag-shaped metal bracket. Its vertical section is fixed to the spandex beam 9 on the texturing machine frame by bolts. A spandex unwinding wheel 4 is installed at the front end of the zigzag section, and a drive motor 3 is fixed at the rear end. The transmission assembly 5 includes a motor drive wheel 51, a drive wheel 53, and a transmission belt 52. The motor drive wheel 51 is sleeved on the output shaft of the drive motor 3. The drive wheel 53 is installed on the unwinding arm 1 through bearings. The transmission belt 52 surrounds the two drive wheels to form a transmission circuit. A tensioning wheel 54 is set in the middle of the unwinding arm 1 to press against the outer side of the belt. The tension is adjusted by locking with bolts. The spandex unwinding arm 6 adopts a double-layer rotatable design. The unwinding arm body 61 is hinged to the front end of the unwinding arm 1 through bearings. A spandex sleeve 62 is fitted on its upper end. A bearing is set between the spandex sleeve 62 and the unwinding arm body 61 to achieve free axial rotation. A handle 63 is fixed to the outside of the unwinding arm body 61, and its rotation angle is limited by a limiting block 7 fixed to the unwinding support arm 1. A wire probe 8 is fixed to the lower end of the unwinding support arm 1 via a bracket, and its sensing head is aligned with the guide wire path below the spandex unwinding wheel 4. A transmission component cover 2 is fixed to the unwinding support arm 1 by bolts. Multiple sets of horizontal elongated holes, 80mm long and 5mm wide, are opened on the surface of the cover for heat dissipation and visual inspection of belt tension. A drive motor 3 drives the drive wheel 53 to rotate via belt transmission. The drive wheel 53 is coaxially fixed to the spandex unwinding wheel 4, thereby driving the spandex unwinding wheel 4 to rotate. A yarn spool is installed on the spandex sleeve 62. After the spandex yarn is drawn from the spool, it rotates with the spandex unwinding wheel 4 to achieve unwinding. The double-layer rotation of the unwinding arm body 61 and the spandex sleeve 62 can adaptively adjust the yarn angle, reducing the contact wrap angle to ≤120°. The wire probe 8 monitors the wire movement in real time and triggers a stop signal within 0.5 seconds when the wire breaks. The limit block 7 prevents excessive rotation of the unwinding arm from causing interference.

[0033] On the other hand, the spandex unwinding unit consists of 12 sets of single-spindle unwinding arms corresponding to 12 spindle positions, fixed side-by-side to the spandex beam 9. The spandex beam 9 is a rectangular steel pipe, bolted to the frame beam above the second roller of the texturing machine. Its centerline height is 1.2 meters higher than the traditional low-position yarn frame, and it is located in the space below the operating platform in the middle of the equipment. The single-spindle unwinding arms are bolted to the spandex beam 9 via unwinding support arms 1, with a 200mm spacing between adjacent unwinding arms to ensure sufficient space for yarn replacement. The spandex yarn is guided from the unwinding arms towards the second roller, reducing the total length of the guide path from the traditional 7-8 meters to 4-5 meters, eliminating the original 5 sharp turns. The unwinding unit is located in the open space above the second roller, allowing maintenance personnel to directly access the unwinding arms from the side of the equipment without disassembling the cold rail protective cover or roller components. In case of a single-spindle unwinding arm failure, it can be replaced entirely by simply loosening the mounting bolts, reducing the maintenance time from the traditional 40 minutes to 15 minutes. A detachable maintenance platform is installed below the spandex beam 9 to facilitate centralized calibration of the guide yarn path of each spindle. The modular design improves equipment installation efficiency by 50%.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A spandex unwinding arm for a texturing machine, characterized in that: The assembly includes a unwinding support arm (1), a transmission component cover plate (2), a drive motor (3), a spandex unwinding wheel (4), a transmission component (5), and a spandex unwinding arm (6). The drive motor (3) is fixed on the unwinding support arm (1), the spandex unwinding wheel (4) is set on the unwinding support arm (1), the transmission component (5) is set on the unwinding support arm (1), the output end of the drive motor (3) is connected to the transmission component (5), the spandex unwinding wheel (4) is connected to the transmission component (5), the transmission component cover plate (2) is set on the transmission component (5), and the spandex unwinding arm (6) is set on the unwinding support arm (1). The spandex unwinding arm (6) and the spandex unwinding wheel (4) are positioned in conjunction.

2. The spandex unwinding arm of the texturing machine according to claim 1, characterized in that: The spandex unwinding arm (6) includes an unwinding arm body (61) and a spandex sleeve (62). The unwinding arm body (61) is rotatably mounted on the unwinding support arm (1), and the spandex sleeve (62) is rotatably mounted on the unwinding arm body (61). The spandex sleeve (62) is positioned in conjunction with the spandex unwinding wheel (4).

3. The spandex unwinding arm of the texturing machine according to claim 2, characterized in that: The spandex unwinding arm (6) also includes a handle (63), which is disposed on the unwinding arm body (61).

4. The spandex unwinding arm of the texturing machine according to claim 1, characterized in that: The transmission assembly (5) includes a motor drive wheel (51), a transmission belt (52), and a drive wheel (53). The motor drive wheel (51) is connected to the output end of the drive motor (3), and the drive wheel (53) is connected to the spandex unwinding arm (6). The transmission belt (52) is wrapped around the motor drive wheel (51) and the drive wheel (53).

5. The spandex unwinding arm of the texturing machine according to claim 4, characterized in that: The transmission assembly (5) also includes a tensioner (54), which is mounted on the unwinding support arm (1) and is positioned to engage with the transmission belt (52).

6. The spandex unwinding arm of the texturing machine according to claim 2, characterized in that: It also includes a limiting block (7), which is fixed on the unwinding arm (1) and the limiting block (7) is positioned to cooperate with the unwinding arm body (61).

7. The spandex unwinding arm of the texturing machine according to claim 1, characterized in that: It also includes a wire probe (8), which is fixed on the unwinding support arm (1) and is located below the spandex unwinding wheel (4).

8. The spandex unwinding arm of the texturing machine according to claim 1, characterized in that: The transmission component cover plate (2) has several through elongated holes.

9. The spandex unwinding unit using the spandex unwinding arm of the texturing machine according to any one of claims 1-8, characterized in that: Includes several texturing machine spandex unwinding arms and spandex crossbeams (9), with the texturing machine spandex unwinding arms fixed side by side on the spandex crossbeams (9).

Images