Kink preventing device for wool yarn two-for-one twisting
By simplifying the combination of guide rings and guide tubes, along with a steel ball tensioner and vibration sensor, the problem of yarn twisting during wool spinning was solved, resulting in improved yarn quality and efficiency.
Patent Information
- Application Number
- CN202423061224.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-11
AI Technical Summary
During the spinning process of wool yarn, kinking is prone to occur, which affects spinning efficiency and yarn quality, leading to problems such as yarn breakage and holes. Existing technologies are difficult to effectively prevent the generation of kinked yarn.
By employing a simplified combination of guide rings and yarn guides, the shape of the air ring and the spinning tension are continuously controlled through the setting of the inner diameter and height of the guide rings. Combined with a steel ball tensioner and a vibration sensor, the yarn tension is adjusted in real time to prevent the formation of kinked yarn.
It effectively reduces the formation of kinked yarn, improves spinning efficiency, reduces hairiness, ensures yarn quality and output, and extends the service life of equipment.
Smart Images
Figure CN223535321U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of textile machinery technology, specifically, it relates to an anti-twist device for double-twisting wool yarn. Background Technology
[0002] Twisted wool knitted fabrics are comfortable, breathable, and offer excellent comfort and hygiene, making them ideal clothing materials. With increasing consumption, the demand for pure wool yarn has expanded further, resulting in a production volume of pure wool products that falls far short of domestic and international market demand, significantly hindering the development of wool textiles. Furthermore, wool yarn has a high and unstable twist. The process involves ring spinning rovings to form fiber slivers, which are then twisted into yarn. This yarn then undergoes several processes, including winding, doubling, retwisting, and steaming, to produce fine yarn. During wool knitting production, kinking is easily generated, leading to low production efficiency, numerous fabric defects, and low yield rates in twisted yarn knitted fabrics.
[0003] The following methods are commonly used to overcome this: First, adding a doubling process can lead to a cumbersome process flow, excessive material loss, and increased production costs. Second, extending the balancing time of the previous winding process can affect the improvement of spinning efficiency. Third, doubling the twisting process can reduce yarn loss; however, in the doubling process of wool spinning, when the two parallel winding yarns are unwound in the doubling yarn storage pot, the unwinding tension of the yarn is unbalanced, resulting in twisted yarn. Twisted yarn affects the efficiency of the next weaving process and causes defects such as yarn breakage and holes during manufacturing. Given these characteristics, in the past, two air rings were typically used to independently control the tension of the upper and lower yarns, balancing the tension of the two yarns and preventing yarn twisting. However, this operation is inconvenient, cumbersome, and affects the twisting efficiency. In particular, the friction between the two air rings can easily cause heat shrinkage, which can increase hairiness. These hairs and thread ends adhere to the yarn, resulting in burrs or even stray threads on the side of the twisted yarn, affecting the yarn quality. When the yarn is tightened in areas of high tension, it is prone to breakage. At the same time, there is a risk of unstable twist in the yarn, which makes it impossible to fully meet the diversified needs of the market, customers, and downstream products, thus hindering the rapid development of the wool textile industry. Utility Model Content
[0004] To reduce the tendency for yarn to twist during knitting production, which affects the efficiency of subsequent weaving processes and causes defects such as yarn breakage and holes, this application provides an anti-twisting device for double-twisting wool yarn. This device prevents the formation of twisted yarn, ensures efficient operation of subsequent weaving processes, improves spinning efficiency, reduces worker workload, and improves yarn quality.
[0005] The anti-twist device for double-twisted wool yarn provided in this application adopts the following technical solution:
[0006] A yarn twisting anti-twisting device includes a spindle, a twisting disc on the spindle, a unwinding cylinder on the spindle, a hollow spindle rod inside the unwinding cylinder, the hollow spindle rod being connected to the twisting disc, a yarn inlet at the top of the hollow spindle rod, a yarn outlet channel communicating with the hollow spindle rod on the spindle, the twisting disc and the hollow spindle rod rotating coaxially, a guide ring on the hollow spindle rod, and a guide ring fitted onto the guide ring, the inner diameter of the guide ring being 0.8 to 0.9 times the outer diameter.
[0007] By adopting the above technical solution, and through the simplification and symbiotic relationship of the guide ring and the spinning ring, the shape of the air ring and the spinning tension are continuously controlled, and the coefficient of friction is reduced to a minimum, resulting in stable yarn tension, which helps reduce yarn breakage and hairiness. Simultaneously, with a reasonable steel traveler replacement cycle, long-term stable spinning tension and air ring shape can be ensured, maintaining stable yarn quality and output. The inner / outer diameter length of the guide ring is set to ensure the side width of the steel traveler, thereby controlling the weight and speed of the guide ring, ensuring high-speed spinning across a wide range of yarn counts, and preventing yarn twisting or breakage. By setting the twisting disc on a hollow spindle and rotating it coaxially, and setting a yarn exit channel on the spindle connected to the hollow spindle, the yarn passes through the guide ring, enters the inlet, passes through the hollow spindle, and exits through the yarn exit channel, thus completing one twisting operation. Furthermore, avoid using T-shaped or similar types of yarn guides, as the tension cannot be adjusted by the combination of the wire traveler and the yarn guide. A fixed value needs to be set externally, which makes it impossible to adjust the tension in real time. This results in an imbalance in the tension of the yarn and produces more twisted yarn.
[0008] In one specific implementation, the guide wire ring has a smooth curved surface that has been polished from 420 chromium molybdenum steel.
[0009] By adopting the above technical solution and treating the guide ring with special steel, the guide ring becomes a smooth curved surface, giving it high hardness. This allows for precise determination of the guide ring's weight, ensuring the driving angle of the guide ring on the ring, and thus determining the geometry of the spinning loops of the guide ring and ring. Based on the loop shape, the variation in yarn twisting tension can be analyzed to avoid yarn tension peaks, prevent yarn twisting or breakage, ensure yarn quality, and also improve the service life of the ring and guide ring.
[0010] In one specific implementation, the inner diameter of the guidewire ring is 4 or 7.5 times its height.
[0011] By adopting the above technical solution, the inner diameter and height of the guide ring are set to ensure the shape of the air ring, and then the tension change is analyzed. Different sets of values for the inner diameter and height are set to ensure the stable air ring shape of different yarn counts. This prevents the air ring shape from exceeding the minimum, which would result in excessively low twisting tension and the formation of twisted yarn, or the air ring shape from exceeding the maximum, which would result in excessive twisting tension, air ring collapse, and yarn breakage, which would seriously affect the yarn quality.
[0012] In one specific implementation, the guide tube and the inlet portion are provided with a sliding coating.
[0013] By adopting the above technical solution, a composite surface coating is set on the ring and the yarn inlet to prevent the reduction of fuzz at the yarn inlet. This also makes the ring have a low coefficient of friction, good wear resistance, almost no maturation period on the machine, stable yarn quality and long service life. It also increases the speed of the guide ring and improves the efficiency of twisting.
[0014] In one specific implementation scheme, a steel ball tensioner is provided inside the hollow spindle, and the steel ball tensioner includes a plurality of tension balls.
[0015] By adopting the above technical solution, a tensioner is set up through a hollow spindle, so that the yarn enters the steel ball tensioner after passing through the hollow spindle and is led out from the yarn outlet channel. Then, the unwinding tension is adjusted so that the yarn is led out from the yarn outlet channel with equal tension, further preventing the formation of kinked yarn.
[0016] In one specific implementation, a spindle holder is provided on the spindle tray, a bearing is provided on the spindle holder, the bearing is connected to the twisting disc, and a spindle driver is connected to the bearing.
[0017] By adopting the above technical solution, and by setting bearings and spindle drivers, the bearings drive the twisting disc and hollow spindle to rotate, thereby achieving yarn twisting.
[0018] In one specific implementation scheme, the system further includes a mounting plate, on which a thread-hanging rod is provided, a thread guide hook is provided on the thread-hanging rod, and a front roller is also provided on the mounting plate.
[0019] By adopting the above technical solution, and by setting the guide hook and the front roller, the tension of the yarn can be controlled and adjusted before winding, so as to obtain a uniform winding tension and thus prevent yarn kinking.
[0020] A vibration sensor is also installed on the threaded rod.
[0021] By adopting the above technical solution, the vibration sensor collects the vibration signal of the yarn guide hook and monitors the twisting status and yarn quality.
[0022] In summary, this application includes at least one of the following beneficial technical effects:
[0023] 1. The streamlined and coordinated relationship between the guide ring and the spinning ring allows for continuous control of the air ring shape and spinning tension, while minimizing the coefficient of friction to ensure stable yarn tension. This reduces yarn breakage and hairiness, maintaining stable yarn quality and output. Avoid using T-shaped guide rings, as these prevent tension adjustment through external settings, hindering real-time tension control and leading to yarn tension imbalance and increased yarn twisting.
[0024] 2. By setting the inner diameter and height of the guide ring to ensure the shape of the air ring, the tension changes can be analyzed. Different sets of values for the inner diameter and height can be set to ensure the stable air ring shape of different yarn counts. This prevents the air ring shape from exceeding the minimum, which would result in excessively low twisting tension and the formation of twisted yarn, or the air ring shape from exceeding the maximum, which would result in excessive twisting tension, air ring collapse, and yarn breakage, which would seriously affect the yarn quality.
[0025] 3. By treating the guide ring with special steel, the guide ring becomes a smooth curved surface, giving it high hardness. This allows for precise determination of the guide ring's weight, ensuring the guide ring's driving angle on the ring, and thus determining the geometry of the spinning loops of the guide ring and ring. Based on the loop shape, the variation in yarn twist tension can be analyzed to avoid yarn tension peaks, prevent yarn twisting or breakage, ensure yarn quality, and also improve the service life of the ring and guide ring. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the anti-twist device for yarn twisting in Embodiment 1 of this application.
[0027] Figure 2 yes Figure 1 Enlarged view of section A.
[0028] Explanation of reference numerals in the attached diagram: 1. Twist disc; 11. Spindle disc; 12. Unwinding cylinder; 121. Hollow spindle rod; 13. Yarn inlet; 14. Yarn outlet channel; 15. Yarn guide ring; 16. Spindle seat; 17. Bearing; 18. Spindle driver; 19. Mounting plate; 20. Yarn hanging rod; 111. Yarn guide hook; 112. Vibration sensor; 131. Front roller. Detailed Implementation
[0029] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.
[0030] This application discloses an anti-twist device for double-twisted yarn.
[0031] Example 1
[0032] Reference Figure 1 A yarn twisting anti-twisting device includes a mounting plate 20, a front roller on the mounting plate 20, a yarn hanging rod 21 on the mounting plate 20, a yarn guide hook 111 fixedly connected to the yarn hanging rod 21, and a vibration sensor 112 on the yarn hanging rod 21 for collecting vibration signals of the yarn or the yarn guide hook 111, thereby monitoring the yarn winding, twisting state and yarn quality; wherein, the yarn count of the yarn is in the range of Nm75-95.
[0033] Reference Figure 1 and Figure 2 The anti-twisting device for double-twisted yarn also includes a spindle 11, on which a twisting disc 1 is provided, and a unwinding cylinder 12 is provided on the spindle 11. A hollow spindle rod 121 is provided inside the unwinding cylinder 12. The hollow spindle rod 121 is connected to the twisting disc 1. A yarn inlet 13 is provided at the top of the hollow spindle rod 121. A steel ball tensioner is provided inside the hollow spindle rod 121. The steel ball tensioner includes 3 tension balls; it plays the role of balancing the winding tension and preventing yarn twisting. The spindle 11 has a yarn outlet channel 14 connected to the hollow spindle 121. The twisting disc 1 and the hollow spindle 121 rotate coaxially. A frame 15 is provided on the hollow spindle 121. The frame 15 and the inlet 13 are provided with a sliding coating. A guide ring 16 is fitted onto the frame 15. The guide ring 16 is a smooth curved surface made of 420CrMo steel. The inner diameter of the guide ring 16 is 24mm, the outer diameter is 30mm, and the height is 3.2mm. The inner diameter and height of the guide ring 16 are used to determine the volume and weight of the guide ring 16, which is used to ensure the stable shape of the air ring around the yarn. This allows for the analysis of tension changes and prevents the air ring shape from exceeding the minimum or maximum, which could cause the twisted yarn to become twisted or break, seriously affecting the yarn quality. A spindle seat 17 is provided below the twisting disc 1. A bearing 18 is provided on the spindle seat 17, and the bearing 18 is connected to a spindle driver 19. Used to adjust the rotation speed during the twisting process.
[0034] The implementation principle of Example 1 is as follows: A specific count wool yarn is passed around the guide ring 16 and enters the inlet 13. Then, it passes through a steel ball tensioner inside the hollow spindle 121 and through the yarn exit channel 14 on the spindle disc 11, completing one twisting operation. Through the simplification and coordination of the guide ring 16 and the guide ring 16, the size and material of the guide ring 16 are designed for wool yarns with a count range of Nm75-95. It uses 420CrMo steel with an inner diameter of 24mm, an outer diameter of 30mm, and a height of 3.2mm. The guide ring 16, with its smooth curved surface, is polished with steel. This allows for continuous control of the air ring shape and spinning tension, minimizing the coefficient of friction and ensuring stable yarn tension. It also reduces yarn breakage and hairiness. The yarn is then twisted a second time via the guide hook 111 and the front roller, further reducing the probability of yarn twisting. Compared to existing twisting devices, this device reduces the number of twisted yarns by 95% per 100 meters of twisted yarn.
[0035] Example 2
[0036] The difference between this embodiment and Embodiment 1 is that the yarn count of the wool yarn is in the range of Nm25-45; the inner diameter of the guide ring 16 is 27mm, the outer diameter length is 30mm, and the height is 3.6mm.
[0037] For wool yarns with a count range of Nm25-45, a guide ring 16 with a smooth curved surface, made of 420CrMo steel with an inner diameter of 24mm, an outer diameter of 30mm, and a height of 3.2mm, is used. This allows for continuous control of the air ring shape and spinning tension, minimizing the coefficient of friction, resulting in stable wool yarn tension, reduced yarn twisting, reduced yarn breakage, and reduced hairiness. The yarn is then twisted a second time through the guide hook 111 and the front roller, further reducing the probability of yarn twisting. Compared to existing twisting devices, this device reduces the number of twisted yarns by 90% per 100m of twisted wool yarn.
[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A device for preventing kinking of yarn by doubling twisting, characterized in that, The device includes a spindle (11), on which a twisting disc (1) is provided, and on which a rewinding cylinder (12) is provided. A hollow spindle rod (121) is provided inside the rewinding cylinder (12). The hollow spindle rod (121) is connected to the twisting disc (1). A yarn inlet (13) is provided at the top of the hollow spindle rod (121). A yarn outlet channel (14) communicating with the hollow spindle rod (121) is provided on the spindle (11). The twisting disc (1) and the hollow spindle rod (121) rotate coaxially. A guide ring (15) is provided on the hollow spindle rod (121). A guide ring (16) is sleeved on the guide ring (15). The inner diameter of the guide ring (16) is 0.8 to 0.9 times the length of its outer diameter.
2. The anti-twist device for yarn twisting according to claim 1, characterized in that, The guide wire ring (16) has a smooth curved surface that has been polished from 420 chromium molybdenum steel.
3. The anti-twist device for yarn twisting according to claim 2, characterized in that, The inner diameter of the guide wire ring (16) is 4 or 7.5 times its height.
4. The anti-twist device for yarn twisting according to claim 1, characterized in that, The guide (15) and the inlet (13) are provided with a sliding coating.
5. The anti-twist device for yarn twisting according to claim 1, characterized in that, The hollow spindle (121) is equipped with a steel ball tensioner, which includes several tension balls.
6. The anti-twist device for yarn twisting according to claim 1, characterized in that, The spindle disc (11) is provided with a spindle seat (17), the spindle seat (17) is provided with a bearing (18), the bearing (18) is connected to the twisting disc (1), and the bearing (18) is connected to a spindle driver (19).
7. The anti-twist device for yarn twisting according to claim 1, characterized in that, It also includes a mounting plate (20), on which a thread-hanging rod (21) is provided, and a thread guide hook (111) is provided on the thread-hanging rod (21). A front roller (131) is also provided on the mounting plate (20).
8. The anti-twisting device for yarn twisting according to claim 7, characterized in that, A vibration sensor (112) is also provided on the hanging rod (21).