Groove type yarn unwinding adjusting device

Abstract

The utility model discloses a groove type yarn unwinding adjusting device, which belongs to the technical field of yarn weaving equipment and comprises a shell. A housing; the twist reducing device is arranged on the periphery of the shell in a sleeving mode, and a groove is formed in the twist reducing device; and the supporting rod is connected with the shell. When the yarn is unwound under the action of external force, the yarn is embedded into the groove, friction force is formed between the yarn and the groove, the direction of the friction force is opposite to the unwinding and untwisting direction of the yarn, and reverse torque is formed, so that attenuation of the twist of the yarn is restrained, and the active twisting supplementing effect is formed. According to the device, by dynamically compensating the yarn twist loss in the unwinding process, the self-twisting prevention function can be kept, the yarn twist can be dynamically regulated and controlled, the unsmoothness of the unwinding process is guaranteed, the problems that yarn hooking of a knitting needle is not smooth, the cloth cover uniformity is reduced, and yarn breakage and equipment shutdown are caused in the yarn unwinding process are solved, and the production efficiency is improved. And the process stability of the heavy twisted yarn in high-speed unwinding and weaving is obviously improved.

Description

Technical Field

[0001] This utility model relates to a grooved yarn unwinding adjustment device, belonging to the technical field of yarn weaving equipment. Background Technology

[0002] In knitting, yarn is often twisted to improve strength and fabric surface quality. While yarns with normal twist can meet basic knitting needs, during the unwinding process of high-twist yarns, the residual torque accumulated within the yarn is released, causing self-twisting and entanglement. Especially at high-speed unwinding, this dynamic torque imbalance significantly increases yarn running resistance, hindering the unwinding process, making it difficult for knitting needles to catch the yarn, reducing fabric uniformity, and ultimately leading to yarn breakage, machine downtime, and impacting production efficiency and finished product quality.

[0003] To address the aforementioned problems, twist reducers or yarn clamps are generally used to increase yarn tension. Chinese patent document CN207452381U discloses a retractable high-twist yarn twist reducer, applicable to yarns of different sizes. Chinese patent document CN209323102U discloses a high-twist yarn twist reducer suitable for tapered yarn bobbins, capable of completely unwinding the yarn from the tapered bobbin. Chinese patent document CN110055673A discloses a twist reducer that uses a support rod and a housing with an adjustment knob to form a multi-specification adaptable support assembly. Combined with an axial stabilization mechanism, it achieves anti-sway twist reduction operation for tapered yarn bobbins of different sizes, effectively solving the problems of yarn bobbin displacement and twist control failure caused by insufficient size adaptability of traditional twist reducers. However, the anti-twist devices in the above technologies mainly focus on optimizing size adaptability. Although they can adapt to yarn bobbins of different specifications, they cannot solve the problem of dynamic imbalance between yarn tension and twist during yarn unwinding, which leads to yarn breakage, equipment downtime, affects the quality of finished fabrics, and limits the production efficiency of high-speed knitting equipment. Utility Model Content

[0004] This utility model provides a grooved yarn unwinding adjustment device to solve the problem that during the unwinding process of high-twist yarn, the yarn self-twists and wraps, which leads to obstruction of the unwinding process, poor yarn hooking of knitting needles, reduced fabric uniformity, yarn breakage, equipment shutdown, and affects the quality of finished fabrics, thus limiting the production efficiency of high-speed knitting equipment.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] This utility model provides a grooved yarn unwinding adjustment device, comprising:

[0007] case;

[0008] A twist reducer, which is sleeved on the outer periphery of the housing and has a groove;

[0009] A support rod, which is connected to the housing.

[0010] In one embodiment of this utility model, it further includes a yarn bobbin and a yarn, the yarn being wound around the yarn bobbin, the yarn bobbin being sleeved on the outer periphery of the support rod, and the yarn abutting against the groove.

[0011] In one embodiment of this invention, the grooves are inclined, and the inclination direction of the grooves is opposite to the twisting direction of the yarn. When the yarn is S-twist (clockwise), the grooves on the untwisting device are inclined to the left; when the yarn is Z-twist (counterclockwise), the grooves on the untwisting device are inclined to the right. The uniformly distributed grooves on the untwisting device constrain the yarn and generate friction, achieving a balance between yarn twist and tension.

[0012] In one embodiment of this utility model, the inclination angle of the groove is 30° to 60°.

[0013] In one embodiment of this utility model, the depth of the groove is 0.5mm to 1.5mm.

[0014] In one embodiment of this utility model, the interval between two adjacent grooves is 0.5mm to 5mm, and the number of grooves is adapted according to the interval.

[0015] In one embodiment of this utility model, the housing is provided with protrusions and through holes, the protrusions are arranged around the outer periphery of the housing, and the twist reducer is sleeved between two adjacent protrusions.

[0016] In one embodiment of this invention, the diameter of the protrusion is larger than the aperture of the anti-twist device. This prevents the anti-twist device from slipping off.

[0017] In one embodiment of this utility model, the support rod has a U-shaped structure, and its open end is connected to the housing.

[0018] In one embodiment of this invention, the anti-twist device is made of polyethylene. Polyethylene (PE) is lightweight, corrosion-resistant, wear-resistant, not easily broken, and low in cost, making it suitable for various complex working conditions.

[0019] The beneficial effects of this utility model are as follows:

[0020] This utility model provides a grooved yarn unwinding adjustment device with a groove on the anti-twist device. During the unwinding process, the yarn is embedded in the groove, causing the yarn to deflect along the yarn axis and generate directional friction with the groove. A frictional force is formed between them, and the direction of this frictional force is opposite to the direction of yarn unwinding and untwisting, forming a reverse torque. This suppresses the attenuation of yarn twist and creates an active twist-compensating effect. This grooved yarn unwinding adjustment device dynamically compensates for yarn twist loss during the unwinding process, maintaining anti-twisting function and dynamically controlling yarn twist. This ensures smooth unwinding, avoids problems such as needle hooking, reduced fabric uniformity, yarn breakage, and equipment downtime during unwinding, significantly improving the process stability of high-twist yarn in high-speed unwinding and weaving, and increasing equipment production efficiency and the quality of finished fabrics. Attached Figure Description

[0021] Figure 1 A perspective view of the grooved yarn unwinding adjustment device provided in an embodiment of this utility model.

[0022] Figure 2 A perspective view of the grooved yarn unwinding adjustment device and the yarn bobbin provided in the embodiment of this utility model.

[0023] Figure 3 A perspective view of the yarn and twist reducer provided in an embodiment of this utility model.

[0024] Figure 4 This is a partially enlarged view showing the groove tilting to the right in an embodiment of the present invention.

[0025] Figure 5 This is a partially enlarged view showing the groove tilting to the left in an embodiment of the present invention.

[0026] In the picture:

[0027] 1. Shell; 11. Protrusion; 12. Through hole; 2. Twist reducer; 21. Groove; 3. Support rod; 4. Yarn bobbin; 5. Yarn. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] like Figures 1 to 5 As shown in the illustration, this application provides a grooved yarn unwinding adjustment device, which can adjust the tension of the yarn during the unwinding process, avoiding self-twisting and entanglement of the yarn, which can lead to obstruction of the unwinding process, yarn breakage, equipment downtime, and affect the production efficiency and quality of the finished fabric. The grooved yarn unwinding adjustment device includes a housing 1, a twist reducer 2, and support rods 3. The twist reducer 2 is sleeved on the outer periphery of the housing 1 to reduce the twist of the yarn, making the unwinding process smoother. Multiple support rods 3 are evenly installed on one side of the housing 1. The yarn 5 is wound on a yarn bobbin 4, which is sleeved on the outer periphery of the support rods 3, providing support for the yarn bobbin 4. The yarn 5 passes between the housing 1 and the twist reducer 2 and abuts against the twist reducer 2.

[0032] In some embodiments, the outer periphery of the housing 1 is provided with a plurality of annular protrusions 11, and the untwisting device 2 is sleeved between two adjacent annular protrusions 11. The diameter of the annular protrusions 11 is larger than the diameter of the untwisting device 2, which can prevent the untwisting device 2 from slipping off. The center of the housing 1 is provided with a through hole 12, and the grooved yarn unwinding adjustment device can be connected to the knitting equipment through the through hole 12.

[0033] like Figure 4 and Figure 5As shown, in some embodiments, the untwisting device 2 has a groove 21 on the side near the housing 1. The groove 21 is inclined on the untwisting device 2, and the angle between the axis of its inclination direction and the horizontal plane is 30° to 60°. When the yarn bobbin 4 is assembled on the support rod 3, the yarn 5 passes between the housing 1 and the untwisting device 2, and the yarn 5 is unwound under the action of external force. During the unwinding process, the yarn 5 is embedded in the groove 21, causing the yarn 5 to deflect along the yarn axis. During its movement, it generates directional friction with the groove 21, and a frictional force is formed between them. The direction of this frictional force is opposite to the direction of yarn unwinding and untwisting, and a reverse torque is formed, thereby suppressing the attenuation of yarn twist and forming an active twisting effect. During the unwinding process of yarn 5, as the amount of yarn on the yarn bobbin 4 decreases, the tension on yarn 5 also changes continuously. This structure can dynamically compensate for the loss of yarn twist during the unwinding process. It can not only maintain the anti-twisting function, but also achieve twist control to keep it balanced, avoiding problems such as yarn breakage and machine stoppage, and significantly improving the process stability of high-twist yarn in high-speed unwinding and weaving.

[0034] In some embodiments, the depth of the groove 21 should be between 0.5 mm and 1.5 mm. The spacing between two adjacent grooves 21 is between 0.5 mm and 5 mm. The number of grooves 21 on the twist reducer 2 can be adapted according to the spacing to make the grooves 21 evenly distributed on the twist reducer 2.

[0035] In some embodiments, the inclination direction of the groove 21 is opposite to the twisting direction of the yarn 5. When the yarn 5 is S-twist, i.e., the twisting direction is clockwise, the groove 21 on the untwisting device 2 tilts to the left, i.e., counterclockwise; when the yarn 5 is Z-twist, i.e., the twisting direction is counterclockwise, the groove 21 on the untwisting device 2 tilts to the right, i.e., clockwise. The uniformly distributed grooves 21 on the untwisting device 2 constrain the yarn 5 and generate friction with it, achieving the effect of balancing the yarn twist and tension.

[0036] Furthermore, in this embodiment, the support rod 3 has a U-shaped structure, with its open end connected to the housing 1. The support rod 3 can be connected to the housing 1 by welding or snap-fit ​​connection. The support rod 3 can be made of rigid materials such as stainless steel, iron, or plastic.

[0037] Optionally, the twister 2 can be made of plastic materials such as polyethylene (PE) or high-density polyethylene (HDPE). Polyethylene (PE) is lightweight, corrosion-resistant, wear-resistant, not easy to break, and has a low cost, making it suitable for a variety of complex working conditions.

[0038] The working principle of this invention is as follows: The yarn bobbin 4 is fitted around the outer periphery of the support rod 3. The yarn 5 passes between the housing 1 and the untwisting device 2. The yarn 5 is unwound under external force. During the unwinding process, the yarn 5 is embedded in the groove 21, causing the yarn 5 to deflect along the yarn axis. During its movement, it generates directional friction with the groove 21, forming a frictional force. The direction of this frictional force is opposite to the direction of yarn unwinding and untwisting, forming a reverse torque, thereby suppressing the attenuation of yarn twist and forming an active twisting effect. This avoids problems such as yarn breakage and machine stoppage, and significantly improves the process stability of high-twist yarn in high-speed unwinding and weaving.

[0039] This document uses specific embodiments to illustrate the principles and implementation methods of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A grooved yarn unwinding adjustment device, characterized in that, include: Shell (1); Twist reducer (2), the twist reducer (2) is sleeved on the outer periphery of the housing (1), the twist reducer (2) is provided with a groove (21); Support rod (3) is connected to housing (1).

2. The grooved yarn unwinding adjustment device according to claim 1, characterized in that, It also includes a yarn bobbin (4) and a yarn (5), the yarn (5) being wound around the yarn bobbin (4), the yarn bobbin (4) being fitted around the outer periphery of the support rod (3), and the yarn (5) abutting against the groove (21).

3. The grooved yarn unwinding adjustment device according to claim 2, characterized in that, The groove (21) is inclined, and the inclination direction of the groove (21) is opposite to the twisting direction of the yarn (5).

4. The grooved yarn unwinding adjustment device according to claim 3, characterized in that, The inclination angle of the groove (21) is 30° to 60°.

5. The grooved yarn unwinding adjustment device according to claim 1, characterized in that, The depth of the groove (21) is 0.5mm to 1.5mm.

6. The grooved yarn unwinding adjustment device according to claim 1, characterized in that, The spacing between two adjacent grooves (21) is 0.5mm to 5mm, and the number of grooves (21) is adapted according to the spacing.

7. The grooved yarn unwinding adjustment device according to claim 1, characterized in that, The housing (1) is provided with protrusions (11) and through holes (12). The protrusions (11) are arranged around the outer periphery of the housing (1), and the twist reducer (2) is sleeved between two adjacent protrusions (11).

8. The grooved yarn unwinding adjustment device according to claim 7, characterized in that, The diameter of the protrusion (11) is larger than the aperture of the detwisting device (2).

9. A grooved yarn unwinding adjustment device according to any one of claims 1-8, characterized in that, The support rod (3) has a U-shaped structure, and its open end is connected to the shell (1).

10. A grooved yarn unwinding adjustment device according to claim 1, characterized in that, The twist reducer (2) is made of polyethylene.

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