Salient point type yarn unwinding adjusting device

Abstract

The utility model discloses a salient point type yarn unwinding adjusting device, which belongs to the technical field of yarn weaving equipment and comprises a shell. The periphery of the shell is sleeved with the twist reducing device, and protruding points are arranged on the side, close to the shell, of the twist reducing device; and the supporting rod is connected with the shell. When the yarn is unwound under the action of external force, friction force is generated between the protruding points and the yarn, the direction of the friction force is opposite to the unwinding and untwisting direction of the yarn, reverse torque is formed, 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 production efficiency and the finished product quality of equipment are improved.

Description

Technical Field

[0001] This utility model relates to a convex dot type 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-twisting 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 torque imbalance during yarn unwinding, which leads to yarn breakage, equipment downtime, and affects production efficiency and finished product quality. Utility Model Content

[0004] This utility model provides a dotted 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 needle hooking, reduced fabric uniformity, yarn breakage, equipment shutdown, and affects production efficiency and finished product quality.

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

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

[0007] case;

[0008] A twist reducer is sleeved on the outer periphery of the housing, and a protrusion is provided on the side of the twist reducer near the housing;

[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 yarn, the yarn being wound around the yarn bobbin, the yarn bobbin being fitted around the outer periphery of the support rod, and the yarn abutting against the protrusion. The untwisting device can reduce the twist of the yarn, making unwinding the yarn smoother.

[0011] In one embodiment of this invention, the protrusions are inclined, and the inclination direction of the protrusions is opposite to the twisting direction of the yarn. When the yarn is S-twist (clockwise), the protrusions on the twist reducer are inclined to the left; when the yarn is Z-twist (counterclockwise), the protrusions on the twist reducer are inclined to the right. The friction generated between the evenly distributed protrusions on the twist reducer and the yarn achieves a balance between yarn twist and tension.

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

[0013] In one embodiment of this utility model, the protrusions are elliptical and evenly distributed on the twist reducer.

[0014] In one embodiment of this utility model, the height of the protrusion is 0.5mm to 1.5mm.

[0015] In one embodiment of this utility model, the interval between two adjacent protrusions is 0.5mm to 5mm, and the number of protrusions is adapted according to the interval.

[0016] 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.

[0017] 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.

[0018] In one embodiment of this utility model, the support rod has a U-shaped structure, and its open end is connected to the housing.

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

[0020] This utility model provides a convex-point type yarn unwinding adjustment device with convex points on the untwisting device. When the yarn is unwound under external force, the convex points generate friction with the yarn. The direction of this friction is opposite to the direction of yarn unwinding and untwisting, forming a reverse torque that suppresses the attenuation of yarn twist and creates an active twist-compensating effect. This convex-point type yarn unwinding adjustment device dynamically compensates for yarn twist loss during the unwinding process, not only maintaining the anti-twisting function but also achieving dynamic control of 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 finished product quality. Attached Figure Description

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

[0022] Figure 2 This is a perspective view of the convex dot type 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 protrusion tilting to the right in an embodiment of the present invention.

[0025] Figure 5 This is a partially enlarged view showing the protrusion tilted 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. Raised point; 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 dotted yarn unwinding adjustment device that can adjust the tension of the yarn during unwinding, preventing self-twisting and entanglement, which can lead to obstruction of the unwinding process, yarn breakage, equipment downtime, and reduced production efficiency and product quality. The dotted yarn unwinding adjustment device includes a housing 1, a twist reducer 2, and support rods 3. The twist reducer 2 is sleeved on the outside of the housing 1 to reduce the twist of the yarn, making unwinding 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 outside 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 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, through which the convex-point yarn unwinding adjustment device can be connected to the weaving equipment.

[0033] like Figure 4 and Figure 5As shown, in some embodiments, the untwisting device 2 has a protrusion 21 on the side near the housing 1. The protrusion 21 is elliptical and is inclined on the untwisting device 2, with the angle between the axis of its inclination direction and the horizontal plane being 30° to 60°. After 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 protrusion 21 generates friction with the yarn 5. The direction of this friction 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. During the unwinding process of the yarn 5, as the amount of yarn on the yarn bobbin 4 decreases, the tension on the yarn 5 also changes continuously. This structure can dynamically compensate for the loss of yarn twist during the unwinding process, not only maintaining the anti-twisting function, but also realizing the control of twist 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 height of the protrusion 21 should not be too high or too low, and the height range of the protrusion 21 should be between 0.5 mm and 1.5 mm. The distance between two adjacent protrusions 21 is between 0.5 mm and 5 mm. The number of protrusions 21 on the twist reducer 2 can be adapted according to the interval distance so that the protrusions 21 are evenly distributed on the twist reducer 2.

[0035] In some embodiments, the tilt direction of the protrusions 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 protrusions 21 on the untwisting device 2 tilt to the left, i.e., counterclockwise; when the yarn 5 is Z-twist, i.e., the twisting direction is counterclockwise, the protrusions 21 on the untwisting device 2 tilt to the right, i.e., clockwise. The friction generated between the evenly distributed protrusions 21 on the untwisting device 2 and the yarn 5 achieves the effect of balancing 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 protrusion 21 generates friction with the yarn 5. The direction of this friction 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 convex dot type 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), and the twist reducer (2) has a protrusion (21) on the side of the housing (1) near the housing; Support rod (3) is connected to housing (1).

2. The convex dot type 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 protrusion (21).

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

4. The convex dot type yarn unwinding adjustment device according to claim 3, characterized in that, The tilt angle of the protrusion (21) is 30° to 60°.

5. The convex dot type yarn unwinding adjustment device according to claim 1, characterized in that, The protrusions (21) are elliptical and are evenly distributed on the twist reducer (2).

6. The convex dot type yarn unwinding adjustment device according to claim 1, characterized in that, The height of the protrusion (21) is 0.5mm to 1.5mm.

7. The convex dot type yarn unwinding adjustment device according to claim 1, characterized in that, The interval between two adjacent protrusions (21) is 0.5mm to 5mm, and the number of protrusions (21) is adapted according to the interval.

8. The convex dot type 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).

9. A convex-point yarn unwinding adjustment device according to claim 8, characterized in that, The diameter of the protrusion (11) is larger than the aperture of the detwisting device (2).

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

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