A rotary yarn guide

Abstract

The utility model discloses a kind of rotary yarn guide mechanism, including the mounting frame connected with external device, the first roller for yarn guidance is symmetrically rotated on the mounting frame, the second roller for yarn guidance is slidably connected on the mounting frame by driving element, two groups of the first roller and single group second roller form triangular guide area on mounting frame, the mounting frame is symmetrically provided with connecting seat, two groups of the connecting seat are respectively arranged at the corresponding hypotenuse of triangular guide area.The utility model forms triangular guide area by two groups of first roller and second roller, and utilizes motorized rail to drive second roller vertically adjustable, cooperates with cross plate, gasket and rectangular plate, and forms two-way stroke limiting structure with abutting bar, can flexibly adjust yarn routing corner and overall tension, simultaneously can accurately constrain component sliding stroke, avoid overtravel collision and yarn rigidly pull fracture, greatly improve the regularity and operating stability of yarn conveying routing.

Description

Technical Field

[0001] This utility model relates to the field of textile machinery technology, and more specifically, to a rotary yarn guiding mechanism. Background Technology

[0002] In the textile production process, the guiding stability of yarn directly affects the processing quality of subsequent weaving and knitting processes. A reasonable guiding mechanism can reduce yarn wear, prevent yarn tangling, and ensure the continuity of the production process. Currently, most yarn guiding devices used in textile equipment are fixed structures, guiding the yarn path through one or a few guiding components.

[0003] However, existing technologies have certain problems: On the one hand, the existing guiding mechanism has poor flexibility in adjusting the guiding path, making it difficult to adapt to the different requirements of different specifications of yarn and different processing technology for guiding angle and tension. When it is necessary to switch the guiding path or adjust the yarn tension, it is often necessary to stop the machine for disassembly and adjustment, which is cumbersome and affects production efficiency. On the other hand, the yarn is prone to tension fluctuations due to the rigid contact of the guiding components during high-speed movement, and there is a lack of targeted limiting and buffering structures, which can lead to yarn deviation, slippage, or even yarn breakage due to excessive local tension, affecting the stability of product quality. Therefore, we urgently need a rotary yarn guiding mechanism to solve the above problems. Utility Model Content

[0004] One objective of this invention is to provide a new technical solution for a rotary yarn guiding mechanism. By using a triangular roller guiding layout combined with a height-adjustable structure, supplemented by a rotary switching multi-set guide roller and an elastic buffer limiting structure, it can achieve precise yarn path guidance, flexible tension adjustment, adaptive compensation of tension fluctuations, and effectively avoid yarn deviation, wear and breakage. It is suitable for the production of yarns of various specifications.

[0005] According to a first aspect of the present invention, a rotary yarn guiding mechanism is provided, comprising a mounting frame connected to an external device, wherein first rollers for yarn guiding are symmetrically rotated on the mounting frame, and second rollers for yarn guiding are slidably connected to the mounting frame via a driving member, the two sets of first rollers and a single set of second rollers form a triangular guiding area on the mounting frame, connecting seats are symmetrically arranged on the mounting frame, the two sets of connecting seats are respectively arranged at the corresponding hypotenuses of the triangular guiding area, and a guide member for guiding the movement of the yarn is provided on the connecting seat;

[0006] The guide includes a protrusion fixedly connected to the connecting seat, a rotating rod rotatably connected to the protrusion, a rotating disk fixedly connected to the end of the rotating rod, and a motor fixedly installed in the protrusion through a placement groove. The output end of the motor is connected to the rotating rod. When the motor is working, the rotating rod and the rotating disk rotate along their axis and form a switching zone.

[0007] Optionally, the driving component includes an electric guide rail fixedly mounted on a mounting frame and connected to an external control device. The output end of the electric guide rail is fixedly connected to a support base. The second roller is rotatably connected to the support base. A horizontal plate for controlling the stroke of the support base is fixedly mounted on the mounting frame. A shim is fixedly connected to the horizontal plate. When the support base abuts against the shim on the horizontal plate, a lower stroke limit zone is formed.

[0008] Optionally, a rectangular plate is fixedly installed on the mounting bracket, and a clamping rod for controlling the stroke of the support seat is threadedly connected to the rectangular plate. The rectangular plate is threadedly locked to the clamping rod by a lock nut. When the support seat abuts against the clamping rod, an upper stroke limit zone is formed.

[0009] Optionally, mounting seats are equidistantly mounted on the rotating disk in a ring. The mounting seats have a first fixing hole for connection along their length direction and an insert groove for fastening. A long rod is provided on the rotating disk corresponding to the mounting seat position. The long rod has a second fixing hole that matches the first fixing hole. When the long rod is fastened in the insert groove and the second fixing hole is coaxial with the first fixing hole at the corresponding position, it is locked with bolts to form an adjustment area.

[0010] Optionally, a bracket is provided at the end of the long rod, a piston cylinder is provided between the long rod and the bracket, a sliding rod is slidably connected inside the piston cylinder, a spring is sleeved on the piston cylinder, the two ends of the spring are respectively connected to the bracket and the long rod to form an elastic zone, and a third roller for yarn guidance is rotatably connected on the bracket.

[0011] Optionally, the third roller has an annular groove in the middle for stabilizing the yarn.

[0012] Optionally, the number of the third rollers is at least three sets, and when in the adjustment zone, the three sets of the third rollers are set in three working states.

[0013] 1. This utility model uses two sets of symmetrically arranged first rollers and adjustable second rollers to form a triangular guide zone. The stability of the triangular structure constrains the basic yarn trajectory, preventing irregular deviations during transmission. Combined with a drive structure consisting of an electric guide rail and a support base, the vertical displacement of the second roller can be precisely controlled by external control equipment, thereby flexibly changing the wrap angle of the yarn within the triangular guide zone. This allows for overall tension coarse adjustment under different process requirements, eliminating the need for manual disassembly and adjustment, significantly improving operational convenience. Simultaneously, the horizontal plate and shims on the mounting frame form a lower stroke limit zone, while the rectangular plate and the clamping rod form an upper stroke limit zone. This bidirectional limit structure absorbs the rigid impact of the support base's downward movement through the flexible buffer of the shims, and adapts to different tension adjustment ranges through the threaded adjustment of the clamping rod. This effectively prevents component damage caused by overtravel of the second roller and yarn breakage due to excessive stretching, ensuring continuous and stable equipment operation and reducing downtime for maintenance.

[0014] 2. This utility model uses a motor within the protrusion to drive a rotating rod and a rotating disk to rotate, allowing for rapid switching between different working states of the third roller. Combined with the multi-position adjustment structure of the mounting base and long rod, and through the snap-fit ​​positioning of the embedded groove and the locking fixation of the first and second fixing holes, the extension length of the long rod can be flexibly adjusted. This allows the three sets of third rollers to form differentiated tension levels, precisely adapting to the guiding needs of different specifications such as fine yarn, medium-coarse yarn, and coarse yarn, as well as different materials such as cotton yarn and chemical fiber yarn. Simultaneously, the piston cylinder, sliding rod, and spring between the long rod and the support form an elastic buffer... In the impact zone, when the yarn experiences instantaneous tension fluctuations due to the start-up and shutdown of external equipment or changes in linear speed, the spring can absorb the impact energy through its extension and contraction deformation. The slide bar smoothly slides along the piston cylinder to achieve flexible compensation, avoiding tensile damage to the yarn caused by sudden tension changes. In addition, the annular groove in the middle of the third roller can axially limit the yarn, preventing derailment or deviation during transmission. Ultimately, this achieves precise yarn guidance, stable tension, and material protection, effectively reducing yarn breakage rate and yarn surface damage rate, and improving the product quality qualification rate of subsequent weaving and knitting processes.

[0015] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0017] Figure 1 This is a schematic diagram of the overall structure of a rotary yarn guiding mechanism;

[0018] Figure 2This is a front view schematic diagram of a rotary yarn guiding mechanism;

[0019] Figure 3 This is a partial cross-sectional structural schematic diagram of a rotary yarn guiding mechanism;

[0020] Figure 4 A rotary yarn guiding mechanism Figure 3 Enlarged structural diagram at point A in the middle.

[0021] The following are marked in the diagram: 1. Mounting bracket; 2. First roller; 3. Second roller; 4. Connecting seat; 5. Electric guide rail; 6. Support seat; 7. Horizontal plate; 8. Shim; 9. Rectangular plate; 10. Clamping rod; 11. Protrusion; 12. Rotating rod; 13. Rotating disk; 14. Motor; 15. Mounting seat; 16. First fixing hole; 17. Embedded groove; 18. Long rod; 19. Second fixing hole; 20. Bracket; 21. Piston cylinder; 22. Slide rod; 23. Spring; 24. Third roller; 25. Annular groove. Detailed Implementation

[0022] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0023] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0024] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0025] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0026] like Figure 1-4 As shown, a rotary yarn guiding mechanism includes a mounting frame 1 connected to an external device. A first roller 2 for yarn guiding is symmetrically rotated on the mounting frame 1. A second roller 3 for yarn guiding is slidably connected to the mounting frame 1 via a driving component. The two sets of first rollers 2 and a single set of second rollers 3 form a triangular guiding area on the mounting frame 1. Connecting seats 4 are symmetrically arranged on the mounting frame 1, and the two sets of connecting seats 4 are respectively located at the corresponding hypotenuses of the triangular guiding area.

[0027] Here, the mounting frame 1 is made of high-strength metal as a single unit, with a solid structure that is not easily deformed. The mounting frame 1 has pre-drilled mounting holes for direct connection and assembly with external textile equipment, and allows for fine-tuning of the installation position to ensure precise alignment of the yarn's entry and exit paths. The first roller 2 is mounted on a pre-set shaft position on the mounting frame 1 via bearings. The bearings are sealed and dustproof to prevent dust and lint from entering, ensuring smooth and uninterrupted rotation of the first roller 2 over the long term. Two sets of first rollers 2 are symmetrically arranged on the mounting frame 1 with parallel axes, providing a stable guide reference for yarn transport. The second roller 3 has the same structure as the first roller 2 and can slide up and down on the mounting frame 1. Together with the two sets of first rollers 2, it forms a triangular guide zone, which constrains the yarn's trajectory and prevents it from shifting or swaying during transport. The connecting seat 4 is directly fixed to the corresponding position on the mounting frame 1. The mounting surface is flattened, and its position corresponds precisely to the hypotenuse of the triangular guide zone, providing a stable mounting base and positioning support for subsequent guide components.

[0028] Furthermore, the mounting frame 1 features an internal reinforced structure, resulting in greater overall rigidity. It can withstand the loads of the first roller 2 and the second roller 3, as well as the tension of the yarn, without easily bending or deforming, effectively extending its overall service life. The first roller 2 is covered with a flexible, wear-resistant protective layer, which increases friction with the yarn, preventing slippage and deviation, and avoiding hard contact that could damage the yarn surface. The first roller 2 also has built-in limiting structures at both ends to restrict lateral movement of the yarn, ensuring smooth conveying. The second roller 3 uses a shoulder-positioning assembly method, always maintaining parallelism with the first roller 2's axis, ensuring even yarn stress and smoother transitions at the yarn wrap angle. The connecting seat 4 has a positioning assembly structure that precisely aligns and locks with the guide components, ensuring a fixed position after assembly and maintaining consistent accuracy during guiding operations.

[0029] Furthermore, all edges and corners of the mounting frame 1 are rounded, eliminating sharp edges that will not scratch operators or snag yarn or debris. The entire surface of the mounting frame 1 is treated with rust and corrosion prevention, making it suitable for the dusty and humid working environment of textile workshops. The protective layer on the surface of the first roller 2 is made of a general-purpose wear-resistant material, suitable for various materials and yarn thicknesses, providing both anti-slip and protective effects. The roller shaft of the second roller 3 is reinforced, resulting in better overall strength and toughness, and is less prone to deformation or breakage during long-term reciprocating lifting and rotating. The connecting seat 4 is designed to reduce weight while maintaining structural strength, reducing its own weight and the load on the mounting frame 1. It also features a hydrophobic structure to prevent water accumulation and corrosion of parts.

[0030] The driving component includes an electric guide rail 5 fixedly mounted on the mounting frame 1 and connected to an external control device. The output end of the electric guide rail 5 is fixedly connected to a support seat 6. The second roller 3 is rotatably connected to the support seat 6. A horizontal plate 7 for controlling the stroke of the support seat 6 is fixedly mounted on the mounting frame 1. A shim 8 is fixedly connected to the horizontal plate 7. When the support seat 6 abuts against the shim 8 on the horizontal plate 7, a lower stroke limit zone is formed.

[0031] Here, the electric guide rail 5 is directly fixed to the reference plane of the mounting frame 1, and can be connected to external control equipment to achieve signal communication and automatically complete the telescopic pushing action. The outer side of the electric guide rail 5 is equipped with a dustproof protective structure, which can prevent workshop dust and fibers from entering the guide rail and ensure smooth and precise transmission operation. The support seat 6 is fixed to the output end of the electric guide rail 5. The overall structure is solid and does not deform. One side of the support seat 6 is firmly connected to the electric guide rail 5, and the other side is reserved for the installation position to rotate and assemble the second roller 3. The assembly positioning is neat and reliable. The horizontal plate 7 is fixed to the lower part of the mounting frame 1. The plate surface is flat and firmly connected to the mounting frame 1. It is mainly used to bear the downward force of the support seat 6. The gasket 8 is made of flexible elastic material and is attached to the surface of the horizontal plate 7. It is soft and has a cushioning effect. When the support seat 6 moves downward and abuts against the gasket 8, it can buffer hard impact and at the same time stably form a lower stroke limit area.

[0032] Furthermore, the electric guide rail 5 is equipped with a cable protection drag chain to neatly store and protect the control cables, preventing cable pulling, tangling, and wear during equipment operation and ensuring stable circuit continuity. The bearing position inside the support base 6 has a stepped positioning structure, which, together with a retaining ring, axially limits the bearing, preventing it from shifting or deviating during operation and ensuring the coaxiality of the second roller 3. Auxiliary reinforcing structures are added to both sides of the horizontal plate 7, forming a triangular support with the mounting frame 1, improving the horizontal plate 7's impact and deformation resistance, and preventing it from easily bending even under the long-term pressure of the support base 6. The gasket 8 has an anti-slip textured surface, making it tightly fitted to the support base 6 and preventing slippage or misalignment under limited conditions. Moreover, the gasket 8 can be individually removed and replaced, making later maintenance very convenient.

[0033] Furthermore, the electric guide rail 5 can be connected to an external controller to achieve parameter setting and real-time feedback, eliminating the need for manual adjustment, resulting in a high degree of automation and suitability for continuous production in workshops. The support base 6 has a rust-proof and hardened surface treatment and an internal lubrication structure to reduce bearing rotation friction resistance, resulting in low operating noise, low wear, and effectively extending the service life of components. The connection between the horizontal plate 7 and the mounting bracket 1 is reinforced to eliminate assembly stress, preventing issues such as plate skewing and inaccurate positioning over long-term use. The gasket 8 is made of a material resistant to aging and environmental changes, suitable for normal workshop conditions, and will not harden or fail over long-term use, maintaining its buffering and limiting functions.

[0034] A rectangular plate 9 is fixedly installed on the mounting bracket 1. A clamping rod 10 for controlling the stroke of the support seat 6 is threadedly connected to the rectangular plate 9. The rectangular plate 9 is threadedly locked to the clamping rod 10 by a lock nut. When the support seat 6 abuts against the clamping rod 10, an upper stroke limit zone is formed.

[0035] Here, rectangular plate 9 is fixed to the upper part of mounting bracket 1, corresponding vertically to the lower horizontal plate 7. Rectangular plate 9 has a standard threaded hole in its center, which can be screwed onto the tension rod 10. The tension rod 10 is made of high-strength metal, wear-resistant and not easily deformed. The rod body has external threads, and the end is a smooth contact head, allowing free rotation to adjust the length extending beyond rectangular plate 9. A locking nut is installed on the tension rod 10, providing good anti-loosening effect. When the equipment vibrates during operation, it locks the position of the tension rod 10, preventing it from rotating or shifting on its own. Operators can adjust the extension length by rotating the tension rod 10, limiting the upper limit position of the support seat 6. This, combined with the lower stroke limit area, forms a bidirectional limit, preventing the second roller 3 from overtraveling and bumping during adjustment.

[0036] Furthermore, the rectangular plate 9 features simple alignment markings on its surface, allowing operators to easily see the adjustment position of the clamping rod 10 and quickly complete the stroke limit adjustment. Reinforcing ribs are added around the perimeter of the rectangular plate 9, improving overall rigidity and preventing twisting or deformation under stress. The end of the clamping rod 10 is made into a smooth spherical structure, making point contact with the support base 6. This reduces impact force and accommodates slight assembly deviations, preventing uneven load distribution. The locking nut, used in conjunction with flat and spring washers, increases the clamping area, preventing damage to the surface of the rectangular plate 9. The elastic preload enhances the anti-loosening effect, adapting to long-term vibration conditions. The bidirectional upper and lower limit structure accommodates various production process adjustment ranges, effectively preventing overtravel of the second roller 3 and preventing component collisions and yarn breakage due to forced pulling.

[0037] Furthermore, after installation, the rectangular plate 9 undergoes stress relief treatment to prevent deformation of the plate surface caused by assembly internal stress, ensuring the perpendicularity of the threaded holes and maintaining the thread fit accuracy over long-term use. The clamping rod 10 features a structure in the middle for easy manual tightening, allowing for direct adjustment without special tools, simplifying operation and facilitating daily adjustments. The clamping rod 10 uses fine-pitch threads, enabling precise micro-adjustments. The locking nut surface is treated with an anti-slip coating for easy manual tightening, and the double-nut locking system provides excellent self-locking and anti-loosening performance, preventing loosening even during long-term operation. The contact end of the clamping rod 10 is treated with wear-resistant reinforcement, preventing wear and denting even after prolonged contact with the support base 6, ensuring long-term stability of the upper stroke limit accuracy.

[0038] The connecting seat 4 is provided with a guide for guiding the movement of the yarn. The guide includes a protrusion 11 fixedly connected to the connecting seat 4. A rotating rod 12 is rotatably connected to the protrusion 11. A rotating disk 13 is fixedly connected to the end of the rotating rod 12. A motor 14 is fixedly installed in the protrusion 11 through a placement groove. The output end of the motor 14 is connected to the rotating rod 12. When the motor 14 is working, the rotating rod 12 and the rotating disk 13 rotate along their axis and form a switching zone.

[0039] Here, the protrusion 11 and the connecting seat 4 are integrated into a single structure, ensuring good overall continuity and rigidity. A pre-drilled slot is provided inside the protrusion 11 for the embedded installation of the motor 14. The inner wall of the slot is treated with anti-slip measures to ensure the motor 14 is stable and does not wobble after installation. A removable end cap is provided on the top of the protrusion 11 for easy installation, maintenance, and replacement of the motor 14. The rotating rod 12 is rotatably mounted on the protrusion 11, allowing for flexible and unobstructed rotation. One end of the rotating rod 12 is connected to the output end of the motor 14, which helps to buffer assembly deviations and reduce the transmission of motor vibration. The rotating disk 13 is fixed to the end of the rotating rod 12. Its flat and stable surface allows it to rotate synchronously with the rotating rod 12, providing a mounting platform for various subsequent guide components. The motor 14 is installed in the slot inside the protrusion 11. During operation, it drives the rotating rod 12 and the rotating disk 13 to rotate. Through fixed-point and angular positioning, it alternates between different guiding positions, forming a stable switching zone to meet the switching requirements of different yarn guiding conditions.

[0040] Furthermore, the end cap of protrusion 11 is equipped with a ventilation structure to facilitate heat dissipation of the internal motor 14 and prevent excessive temperature rise of the motor 14 due to heat accumulation in the enclosed space. A seal is installed at the rotational engagement point between protrusion 11 and rotating rod 12 to prevent dust and fibers from entering, ensuring smooth rotation of rotating rod 12 over a long period. The surface of rotating rod 12 is treated with rust-proof and wear-resistant materials to adapt to the dusty and humid environment of the workshop, preventing easy rusting and jamming. Rotating rod 12 itself has an axial limiting structure to prevent back-and-forth movement during operation. Alignment marks are provided on the edge of rotating disk 13, which can align with the reference position of protrusion 11 for easy manual calibration of the rotation angle, ensuring accurate alignment during each workstation switch. Motor 14 has built-in overload and overheat protection functions, automatically shutting down when encountering abnormal load or excessive temperature to prevent motor burnout, suitable for long-term continuous operation. This is a direct reference to conventional technical solutions and will not be elaborated further here.

[0041] Furthermore, the protrusion 11 and the connecting seat 4 are integrated into one piece, reducing gaps and errors caused by separate assembly, resulting in stronger overall load-bearing capacity and making it less prone to loosening and deformation even under long-term rotational stress. The protrusion 11 has a smooth, rounded exterior without sharp edges, preventing it from snagging yarn or debris. The rotating rod 12 and the connecting components are locked together, ensuring reliable transmission without slippage. The end of the rotating rod 12 has an anti-detachment structure to prevent the rotating disk 13 from falling off, improving safety. The rotating disk 13 has a weight-reduction structure, reducing weight while maintaining its rigidity, thus reducing the drive load on the motor 14 and making station switching smoother and more sensitive. The motor 14 has a self-locking function at the rotation angle, locking itself after rotation into position to prevent arbitrary deflection and ensure precise alignment of the guide station after switching.

[0042] Mounting seats 15 are equidistantly mounted on the rotating disk 13. The mounting seats 15 have a first fixing hole 16 for connection along their length direction. The mounting seats 15 also have an insert groove 17 for fastening. A long rod 18 is provided on the rotating disk 13 at the position corresponding to the mounting seats 15. The long rod 18 has a second fixing hole 19 that matches the first fixing hole 16. When the long rod 18 is fastened in the insert groove 17 and the second fixing hole 19 is coaxial with the first fixing hole 16 at the corresponding position, it is locked with bolts to form an adjustment area.

[0043] Here, mounting bases 15 are evenly arranged and firmly fixed along the circumference of rotating disk 13, with a neat and uniform arrangement, providing standard fastening positions for the long rod 18. First fixing holes 16 are sequentially opened along the length of mounting base 15, forming multiple assembly points to accommodate different extension positions of the long rod 18. The holes are regular in shape and have good coaxiality, facilitating fastener insertion and locking. An embedding groove 17 is opened on the upper part of mounting base 15. The groove shape matches the cross-section of the long rod 18, enabling quick alignment and fastening. The groove opening has a guide bevel, facilitating the embedded assembly of the long rod 18 and providing lateral restraint to prevent lateral swaying and displacement. The long rod 18 is machined from a regular profile and can be directly fastened into the embedding groove 17. The second fixing hole 19 on the long rod 18 matches the diameter of the first fixing hole 16. After alignment, it is locked with bolts, allowing flexible adjustment of the extension length of the long rod 18, forming an adjustable range as needed.

[0044] Furthermore, the mounting base 15 has a reinforced structure at its bottom, resulting in a stronger connection with the rotating disk 13. This prevents bending and deformation when bearing the loads of the long rod 18 and the rear-end components. The mounting base 15 is positioned and arranged using tooling to ensure uniform circumferential spacing. The first fixing hole 16 can be made as a smooth hole or a threaded hole to accommodate different locking assembly methods, making disassembly and assembly simple and convenient. After locking, the connection is stable with no looseness or gaps. The interior of the embedding groove 17 has anti-slip textures to increase the friction between the long rod 18 and the groove, assisting in limiting and preventing displacement. The groove opening is chamfered to prevent scratching the surface of the long rod 18 during assembly. The surface of the long rod 18 is treated with anti-corrosion and wear-resistant materials to adapt to complex workshop conditions. The snap-fit ​​end of the long rod 18 has a positioning structure that allows for quick engagement and alignment with the embedding groove 17, facilitating rapid hole alignment and assembly.

[0045] Furthermore, the mounting base 15 is made entirely of rust-resistant material, making it resistant to corrosion even in dusty and humid environments, and requiring minimal daily maintenance. The first fixing hole 16 has a reasonable layout of positions, covering the adjustment stroke of conventional production processes and meeting the adjustment needs of different yarn tensions and guide positions. The embedded groove 17 is machined with moderate precision, preventing assembly jamming or excessive gaps that could cause wobbling, ensuring stable fit over long-term use. The long rod 18 adopts a hollow structure to reduce weight, decreasing the rotational load on the rotating disk 13 without compromising its structural strength. Once locked, the position is secure, and the entire adjustment area is simple to adjust and has a wide range of applications.

[0046] A bracket 20 is provided at the end of the long rod 18, and a piston cylinder 21 is provided between the long rod 18 and the bracket 20. A sliding rod 22 is slidably connected inside the piston cylinder 21, and a spring 23 is sleeved on the piston cylinder 21. The two ends of the spring 23 are respectively connected to the bracket 20 and the long rod 18 to form an elastic zone. A third roller 24 for guiding the yarn is rotatably connected on the bracket 20. An annular groove 25 for stabilizing the yarn is opened in the middle of the third roller 24. There are at least three sets of third rollers 24. When in the adjustment zone, the three sets of third rollers 24 are set in three working states.

[0047] Here, the support 20 adopts an integrally molded frame structure, which is sturdy and reliable. On the one hand, it is used to rotate and support the third roller 24, and on the other hand, it is fixedly connected to the end of the slide rod 22, making it resistant to deformation under stress. The piston cylinder 21 is a tubular structure, with one end fixed to the end of the long rod 18. The inner wall of the cylinder is smooth, providing a guide track for the reciprocating sliding of the slide rod 22. The slide rod 22 is inserted inside the piston cylinder 21 and can slide freely with reasonable clearance, ensuring smooth and unobstructed sliding. The outer end of the slide rod 22 is firmly connected to the support 20, enabling synchronous transmission of force and displacement. The spring 23 is fitted on the outside of the piston cylinder 21, with its two ends abutting against the long rod 18 and the support 20 respectively. Utilizing its own elastic expansion and contraction, it works with the piston cylinder 21 and the slide rod 22 to form an elastic zone, which can adaptively buffer and compensate for tension fluctuations in the yarn. The third roller 24 is rotatably mounted on the bracket 20. It has low rotational resistance and flexible operation. The annular groove 25 in the middle of the third roller 24 can limit and constrain the yarn to prevent the yarn from deviating to the left or right or deviating from the yarn path. Multiple sets of third rollers 24 can be set to different working states to adapt to different specifications of yarn and different tension requirements for guiding operations.

[0048] Furthermore, the bracket 20 adopts a U-shaped structure, which perfectly fits the installation space of the third roller 24. After the roller is assembled, its rotation is interference-free. The surface of the bracket 20 is coated with anti-corrosion paint, making it resistant to dusty and humid environments in the workshop. The piston cylinder 21 is equipped with a sealing dustproof component at its port, which can prevent fly shavings and dust from entering the cylinder and prevent impurities from jamming the slide rod 22, ensuring smooth extension and retraction for a long time. The surface of the slide rod 22 is hardened and polished, making it wear-resistant and with low sliding resistance. The end of the slide rod 22 is equipped with a limiting structure to prevent it from slipping out of the piston cylinder 21 during sliding, ensuring safe and reliable use. The spring 23 is made of high-quality elastic material, with stable elasticity and good fatigue resistance. It will not undergo permanent deformation even after repeated extension and retraction over a long period of time, and always has good buffering and compensation capabilities. The surface of the third roller 24 is covered with a flexible protective layer, which will not abrade the yarn and has a good anti-slip effect. The inner wall of the annular groove 25 is smoothly transitioned, without sharp corners or burrs, to avoid scratching the yarn. Multiple sets of third rollers 24 are set up in different positions, which can be switched at any time according to production conditions.

[0049] Furthermore, a reinforced structure is added to the connection between the bracket 20 and the slide rod 22 to improve the connection rigidity and prevent deformation and cracking when subjected to yarn pressure and the thrust of the spring 23. The connection between the piston cylinder 21 and the long rod 18 is reinforced and sealed, ensuring a firm and secure connection while also providing rust and corrosion resistance. The extension range of the slide rod 22 is adapted to the tension fluctuation range of conventional yarns, providing a moderate buffering effect that absorbs instantaneous tension impacts without excessive extension affecting guiding accuracy. The spring 23 is equipped with limit seats at both ends to prevent skewing, offset, or jamming during operation, ensuring uniform axial output of the elastic force. The annular groove 25 on the third roller 24 is adapted to the routing of various conventional yarns, providing reliable limiting effect. The three sets of third rollers 24 are differentiated by structural differences to determine the working positions, allowing them to guide and tension yarns of different thicknesses and materials, thus broadening the overall applicability of the mechanism.

[0050] In this invention, when the rotary yarn guiding mechanism is working, the yarn is introduced from the first rollers 2 symmetrically arranged on the left side of the mounting frame 1 and enters the triangular guide area formed by two sets of first rollers 2 and a liftable second roller 3. The electric guide rail 5 can drive the support seat 6 to move the second roller 3 vertically according to process requirements. By changing the wrap angle of the yarn in the triangular guide area, the overall tension can be coarsely adjusted. At the same time, the lower stroke limit area formed by the horizontal plate 7 and the gasket 8, and the upper stroke limit area formed by the rectangular plate 9 and the clamping rod 10 can precisely limit the displacement stroke of the support seat 6 to prevent overtravel during adjustment and avoid yarn breakage due to over-adjustment of tension. While the yarn is being transmitted in the triangular guide area, the motor 14 on the connecting seats 4 on both sides of the mounting frame 1 drives the rotating rod 12 to rotate the rotating disk 13, completing the switching of different third rollers 24. The long rod 18 on the rotating disk 13 is locked by the mounting seat 15, the embedded groove 17, the first fixing hole 16 and the second fixing hole 19. By pre-adjusting different extension lengths, the three sets of third rollers 24 can form differentiated working states to adapt to the tension requirements under different processes, achieving graded fine adjustment of tension. The elastic zone formed by the end bracket 20 of the long rod 18, the piston cylinder 21, the slide rod 22, and the spring 23 can provide flexible compensation through the extension and contraction of the spring 23 when the yarn tension fluctuates instantaneously, such as when external equipment starts or stops or the linear speed changes, absorbing rigid impacts and avoiding damage to the yarn caused by sudden tension changes. The annular groove 25 opened in the middle of the third roller 24 can axially limit the yarn to prevent the yarn from deviating or derailing during transmission, ensuring stable contact between the yarn and the roller. The yarn that has completed the guidance and tension adjustment is finally stably delivered through the first roller 2 on the right side of the mounting frame 1 to enter the next process. The entire mechanism achieves stable guidance and precise tension control for different specifications of yarn and different production conditions through triple control of coarse tension adjustment, graded fine adjustment, and flexible buffering, effectively reducing the yarn breakage rate and ensuring production continuity.

[0051] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A rotary yarn guiding mechanism, comprising a mounting bracket (1) connected to an external device, characterized in that: The mounting frame (1) has symmetrically rotating first rollers (2) for guiding yarn. The mounting frame (1) is slidably connected to a second roller (3) for guiding yarn via a drive component. The two sets of first rollers (2) and a single set of second rollers (3) form a triangular guide area on the mounting frame (1). The mounting frame (1) is symmetrically provided with connecting seats (4). The two sets of connecting seats (4) are respectively located at the corresponding hypotenuses of the triangular guide area. The connecting seats (4) are provided with guide components for guiding the movement of yarn. The guide includes a protrusion (11) fixedly connected to the connecting seat (4), a rotating rod (12) is rotatably connected to the protrusion (11), a rotating disk (13) is fixedly connected to the end of the rotating rod (12), and a motor (14) is fixedly installed in the protrusion (11) through a placement groove. The output end of the motor (14) is connected to the rotating rod (12). When the motor (14) is working, the rotating rod (12) and the rotating disk (13) rotate along their axis and form a switching zone.

2. The rotary yarn guiding mechanism according to claim 1, characterized in that: The driving component includes an electric guide rail (5) fixedly mounted on the mounting frame (1) and connected to an external control device. The output end of the electric guide rail (5) is fixedly connected to a support seat (6). The second roller (3) is rotatably connected to the support seat (6). A horizontal plate (7) for controlling the stroke of the support seat (6) is fixedly mounted on the mounting frame (1). A gasket (8) is fixedly connected to the horizontal plate (7). When the support seat (6) abuts against the gasket (8) on the horizontal plate (7), a lower stroke limit zone is formed.

3. A rotary yarn guiding mechanism according to claim 2, characterized in that: A rectangular plate (9) is fixedly installed on the mounting bracket (1). A clamping rod (10) for controlling the stroke of the support seat (6) is threadedly connected to the rectangular plate (9). The rectangular plate (9) is threadedly locked to the clamping rod (10) by a locking nut. When the support seat (6) and the clamping rod (10) abut against each other, an upper stroke limit zone is formed.

4. A rotary yarn guiding mechanism according to claim 3, characterized in that: Mounting seats (15) are equidistantly mounted on the rotating disk (13). The mounting seats (15) have a first fixing hole (16) for connection along their length direction. The mounting seats (15) have an insert groove (17) for fastening. The rotating disk (13) has a long rod (18) at the position corresponding to the mounting seats (15). The long rod (18) has a second fixing hole (19) that matches the first fixing hole (16). When the long rod (18) is fastened in the insert groove (17) and the second fixing hole (19) is coaxial with the first fixing hole (16) at the corresponding position, it is locked with bolts to form an adjustment area.

5. A rotary yarn guiding mechanism according to claim 4, characterized in that: A bracket (20) is provided at the end of the long rod (18), and a piston cylinder (21) is provided between the long rod (18) and the bracket (20). A sliding rod (22) is slidably connected inside the piston cylinder (21). A spring (23) is sleeved on the piston cylinder (21). The two ends of the spring (23) are respectively connected to the bracket (20) and the long rod (18) to form an elastic zone. A third roller (24) for yarn guidance is rotatably connected on the bracket (20).

6. A rotary yarn guiding mechanism according to claim 5, characterized in that: The third roller (24) has an annular groove (25) in the middle for stabilizing the yarn.

7. A rotary yarn guiding mechanism according to claim 6, characterized in that: The number of the third rollers (24) is at least three sets, and when in the adjustment zone, the three sets of the third rollers (24) are set in three working states.

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