Stranding machine integrated untwisting device

Abstract

The application relates to the field of stranding machines, and discloses a stranding machine integrated type twist removing device, a stranding wire passes through a limiting assembly, a U-shaped groove for accommodating the stranding wire is arranged on the limiting assembly, elastic telescopic assemblies are respectively arranged on the opposite two inner walls of the U-shaped groove, the two elastic telescopic assemblies extend towards the middle of the U-shaped groove, when the stranding wire is pressed into the U-shaped groove, the elastic telescopic assemblies are converted from the stretched state into the telescopic state to allow the stranding wire to pass, and the ends of the elastic telescopic assemblies are connected with rotatable spherical assemblies; by arranging the U-shaped groove with the inclined elastic telescopic assembly in the limiting assembly and arranging the rotatable spherical assemblies at the telescopic ends, flexible clamping and universal rolling contact of the stranding wire are realized, sliding friction is effectively converted into rolling friction, and the running resistance and surface abrasion risk are reduced.

Description

Technical Field

[0001] This invention relates to the field of stranding machines, and more particularly to an integrated untwisting device for stranding machines. Background Technology

[0002] A stranding machine forms a composite conductor with the desired mechanical and electrical properties by stranding multiple monofilaments or strands together at a specific pitch and direction.

[0003] Existing technologies often employ "de-twist" (also known as "reverse twist" or "de-twist") devices, which counteract the residual torque accumulated in the individual filaments during the stranding process by causing the stranded wire to rotate in the opposite direction. A typical de-twist device usually includes a de-twist motor, a transmission mechanism, and a guiding structure. The motor drives the transmission assembly to rotate the entire stranded wire in the opposite direction, thereby releasing stress. However, in practical applications, such devices still face several technical bottlenecks:

[0004] First, during the untwisting process, the stranded wire needs to pass through limiting or guiding components to maintain its position. Traditional limiting structures mostly use fixed guide wheels or rigid slots, which cannot adapt to the passage requirements of stranded wires of different diameters. Moreover, when the stranded wire is running at high speed, it is prone to generating large frictional resistance, and may even cause surface scratches or local deformation, affecting product quality.

[0005] Secondly, the limiting components in existing untwisting equipment lack effective buffering and adaptive adjustment capabilities for the stranded wire. When there are tolerances in the stranded wire diameter or slight fluctuations occur during operation, the rigid limiting structure cannot compensate in time, which can easily lead to wire jamming, increased wear, or unstable untwisting effect.

[0006] Therefore, there is an urgent need for a highly adaptive untwisting device with buffer protection function, which can achieve flexible guidance and low-friction transmission of stranded wires of different specifications while ensuring effective untwisting, thereby improving the quality of stranded wires and production efficiency. Summary of the Invention

[0007] The purpose of this invention is to provide an integrated untwisting device for stranding machines to solve the above-mentioned problems. The specific technical solution is as follows:

[0008] An integrated untwisting device for stranding wire includes an untwisting motor, a transmission assembly, and a limiting assembly. The untwisting motor drives the transmission assembly to rotate the stranded wire in the opposite direction. The stranded wire passes through the limiting assembly, which has a U-shaped groove for receiving the stranded wire. Two elastic telescopic components are respectively provided on opposite inner walls of the U-shaped groove, extending towards the center of the U-shaped groove. The elastic telescopic components are inclined and gradually rise from near the inner wall of the U-shaped groove to away from it. When the stranded wire is pressed into the U-shaped groove, the elastic telescopic components change from an extended state to a telescopic state to allow the stranded wire to pass through. A rotatable spherical component is connected to the end of each elastic telescopic component.

[0009] As an improvement to the above technical solution, the spherical component includes a base and a sphere. The base is provided with a receiving groove for accommodating the sphere, and part of the sphere protrudes from the receiving groove. The opening of the receiving groove is constricted.

[0010] As an improvement to the above technical solution, the elastic telescopic component includes a return spring. The inner wall of the U-shaped groove is provided with a channel for installing the return spring, and the two ends of the return spring abut against the inner wall of the channel and the outer side of the base.

[0011] As an improvement to the above technical solution, the integrated untwisting device for the stranding machine further includes a lubrication component. The lubrication component includes a conveying pipe arranged within the limiting component. The conveying pipe is connected to the receiving groove of the base. A push-button switch assembly for controlling the opening or closing of the conveying pipe is provided on the conveying pipe. A pressure rod is connected to the outer side of the base. The pressure rod extends through the reset spring into the interior of the limiting component. The trigger end of the push-button switch assembly is located on the moving path of the pressure rod.

[0012] As an improvement to the above technical solution, the outlet end of the conveying pipe is located on the inner wall of the U-shaped groove, the inlet end of the conveying pipe is located on the outside of the limiting component, and a flexible hose is detachably connected between the outlet end of the conveying pipe and the base.

[0013] As an improvement to the above technical solution, the inner bottom surface of the U-shaped groove is rotatably connected to a shaft, and the outer side of the shaft is covered with an elastic buffer layer.

[0014] As an improvement to the above technical solution, each of the elastic telescopic components is equipped with a corresponding lubrication component, and the delivery pipes of the two lubrication components converge together and are provided with a common input interface.

[0015] As an improvement to the above technical solution, the hose is connected to the top of the receiving groove.

[0016] As an improvement to the above technical solution, a portion of the conveying pipe disposed within the limiting component is inclined to match the elastic telescopic component.

[0017] The beneficial effects of the present invention are as follows: by setting a U-shaped groove with an inclined elastic telescopic component in the limiting component and configuring a rotatable spherical component at the telescopic end, flexible clamping and universal rolling contact of the stranded wire are realized, effectively converting sliding friction into rolling friction, reducing running resistance and the risk of surface wear.

[0018] By using a lever in conjunction with a push-button switch, precise lubrication is achieved by turning on only the moment the stranded wire passes through and stopping the oil supply immediately. This ensures the lubrication needs of critical friction pairs while preventing oil waste and cable contamination. Combined with detachable hose connections and a reasonable pipeline layout, the ease of assembly and maintenance efficiency of the lubrication system are greatly improved.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Of course, implementing any product or method of this application does not necessarily require achieving all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the limiting component of the present invention.

[0023] In the diagram: 1. Torque retraction motor; 2. Transmission assembly; 3. Limiting assembly; 31. U-shaped groove; 32. Elastic telescopic assembly; 4. Spherical assembly; 41. Base; 42. Sphere; 5. Lubrication assembly; 51. Conveying pipe; 52. Push-button switch assembly; 6. Pressure rod; 7. Hose; 8. Shaft. Detailed Implementation

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] During the stranding process, to eliminate the residual torsional stress generated during stranding, a de-twisting device is usually required. This device releases stress by rotating the entire stranded wire in the opposite direction. However, the limiting or guiding structures in existing de-twisting devices often use fixed slots or rigid guide wheels. These not only struggle to accommodate stranded wires of different diameters, but also tend to cause severe friction, surface scratches, and even localized deformation due to excessive contact rigidity when the stranded wire is running at high speeds. This seriously affects the appearance quality and structural stability of the cable.

[0026] Especially when the stranded wire enters the limiting part of the untwisting mechanism, if the limiting structure lacks buffering and self-adjusting capabilities, it will not only hinder the smooth passage of the stranded wire, but may also introduce additional tension due to excessive local clamping, thereby interfering with the untwisting effect and even causing wire breakage and machine shutdown. In addition, although the traditional U-shaped limiting groove can provide basic guidance, its inner wall has a rigid contact with the stranded wire, which cannot achieve flexible fit and pressure release during the dynamic operation of the stranded wire, making it difficult to balance guiding accuracy and protective performance.

[0027] For the above issues, please refer to Figure 1 and Figure 2 This invention provides an integrated untwisting device for stranding wire, applicable to stranding wire. It includes an untwisting motor 1, a transmission assembly 2, and a limiting assembly 3. The untwisting motor 1 drives the transmission assembly 2 to rotate the stranded wire in the opposite direction. The limiting assembly 3 has a U-shaped groove 31 for receiving the stranded wire, and elastic telescopic components 32 are respectively provided on two opposing inner walls of the U-shaped groove 31. These elastic telescopic components 32 extend towards the center of the U-shaped groove 31 and are arranged at an angle. One end is located on the inner wall of the U-shaped groove 31, while the other end gradually rises towards the groove opening, forming an inclined posture that gradually rises from the inside out.

[0028] When the stranded wire is fed into the U-shaped groove 31, its outer contour contacts and applies pressure to the elastic telescopic components 32 on both sides, causing the elastic telescopic components 32 to compress from their naturally extended state to a contracted state, thereby making room for the stranded wire to pass through. This ensures that the stranded wire remains centered during insertion; it also effectively absorbs the impact of operating vibration and dimensional tolerances through elastic buffering, significantly reducing contact stress.

[0029] Furthermore, a rotatable spherical component 4 is connected to the end of the elastic telescopic component 32. When in contact with the stranded wire surface, this spherical component 4 can roll freely with the movement or rotation of the stranded wire, converting the original sliding friction into rolling friction, significantly reducing operating resistance and preventing scratches on the cable surface. Simultaneously, the spherical structure has excellent omnidirectional adaptability, maintaining a continuous and smooth contact state regardless of slight changes in the stranded wire diameter or slight deviations in operating posture, thus improving the stability and reliability of the untwisting process.

[0030] This embodiment integrates an inclined elastic telescopic component 32 and a rotatable spherical end into the limiting component 3, constructing a stranded wire guiding structure that combines self-adaptability, buffering, and low friction characteristics. This design not only effectively solves the problems of wire jamming, wear, and untwisting interference caused by rigid limiting in traditional untwisting equipment, but also improves the equipment's compatibility with stranded wires of different specifications and its stability during long-term operation.

[0031] In some embodiments, a spherical component 4 is provided at the end of the elastic telescopic component 32. The spherical component 4 includes a base 41 and a sphere 42 embedded therein. Specifically, the base 41 has a receiving groove for accommodating the sphere 42. The sphere 42 is partially embedded in the groove, and the remaining part protrudes outward from the groove opening, forming a convex curved surface that can roll in contact with the surface of the stranded wire. The opening of the receiving groove is designed as a contracting structure, that is, the inner diameter of the groove opening is smaller than the diameter of the sphere 42. While ensuring that the sphere 42 will not fall out of the base 41, the sphere 42 is allowed to achieve micro-rotation with multiple degrees of freedom inside the receiving groove. When the stranded wire rotates, oscillates laterally, or moves axially during untwisting, the exposed sphere 42 can roll freely with the movement trend of the stranded wire surface, always maintaining a low-resistance, high-compliance dynamic contact.

[0032] The omnidirectional rotation capability of the sphere 42 automatically compensates for changes in the stranded wire's posture during operation, avoiding stress concentration or motion stagnation caused by rigid interference. Simultaneously, the contracting groove reliably limits the movement of the sphere 42, preventing it from detaching under long-term high-frequency vibration or impact loads, thus balancing structural reliability and operational flexibility.

[0033] In some embodiments, the elastic telescopic component 32 uses a return spring as its core elastic element, and a dedicated channel is formed inside the inner wall of the U-shaped groove 31 for embedding the return spring. The return spring is entirely housed in this channel, with one end abutting against the inner wall of the channel (i.e., the body of the U-shaped groove 31), and the other end directly abutting against the outer side of the base 41 connected to the end of the elastic telescopic component 32. When the stranded wire is pressed into the U-shaped groove 31 and pushes the base 41 inward, the return spring is compressed and stores energy. Once the stranded wire passes through or the tension is released, the spring pushes the base 41 back to its original position by its own elastic force, so that the elastic telescopic component 32 quickly returns to its initial extended state, preparing for the next passage of the stranded wire.

[0034] During the untwisting process of the stranded wire, the moving contact parts in the limiting component 3 (such as the spherical end that directly interacts with the stranded wire) are subjected to high-frequency friction and dynamic loads for a long time. If there is a lack of effective lubrication, it will not only accelerate the wear of parts and shorten the service life of the equipment, but may also affect the smoothness of the stranded wire operation due to increased frictional resistance, and even cause surface scratches or tension fluctuations, thereby affecting product quality.

[0035] In addition, traditional lubrication methods usually rely on periodic manual oiling or external oil circuit systems, which have obvious drawbacks. On the one hand, manual lubrication is difficult to achieve in a timely and quantitative manner, and is prone to insufficient or excessive lubrication. On the other hand, external oil supply systems have complex structures and lack a linkage mechanism between the oil circuit and moving parts, making it impossible to respond dynamically according to actual working conditions, resulting in low lubrication efficiency. Furthermore, excess lubricating oil can easily contaminate the surface of cables, affecting subsequent processing or product cleanliness.

[0036] To address the aforementioned issues, this embodiment solves the problem by incorporating a trigger-type lubrication assembly 5. Specifically, a delivery pipe 51 is integrated within the limiting assembly 3. One end of this pipe connects to a receiving groove (i.e., the mounting cavity of the spherical assembly 4) on the base 41, allowing the lubricating medium to be directly delivered to the location of the friction pair. The other end extends to the outside of the limiting assembly 3 as a lubricating medium inlet. Preferably, a push-button switch assembly 52 is installed on the delivery pipe 51, and its open or closed state is automatically controlled by the device's own operating status. In conjunction with this switch, a pressure rod 6 is fixedly connected to the outer side of the base 41. This pressure rod 6 extends along the elastic extension direction, passes through the interior of the return spring, and extends into a preset space inside the housing of the limiting assembly 3. When the stranded wire is not in the U-shaped groove 31, the elastic telescopic component 32 is in the extended state, the pressure rod 6 is located away from the push-button switch component 52, the switch is in the closed state, and the lubricating medium cannot flow; when the stranded wire is pressed into the U-shaped groove 31 and pushes the base 41 to move inward, the pressure rod 6 moves synchronously with the base 41, and its end just triggers the trigger end of the push-button switch component 52, thereby instantly opening the delivery pipe 51, so that the lubricating medium is accurately injected into the receiving groove when needed, and lubricating the friction interface between the ball 42 and the base 41 or the exposed surface of the ball 42.

[0037] It should be noted that the conveying pipe 51 is opened or connected for a short time, and the entire lubrication process does not require continuous oil supply or external control signals. This ensures that the friction pair receives the necessary lubrication protection under high load, while completely avoiding problems such as excessive lubrication, oil residue, or cable contamination.

[0038] The inlet end of the conveying pipe 51 is located outside the limiting component 3, facilitating quick access to external lubrication sources (such as oil cups or centralized oil supply systems). Its outlet end is located on the inner wall of the U-shaped groove 31. Preferably, the outlet end of the conveying pipe 51 is not rigidly connected to the base 41, but rather flexibly connected via a detachable flexible hose 7. One end of the hose 7 is detachably connected to the outlet end of the conveying pipe 51 (e.g., a quick-connect fitting, threaded fitting), and the other end connects to the lubrication inlet on the base 41 (e.g., the oil filling hole of the receiving groove). The hose 7 is made of an oil-resistant, pressure-resistant, and flexible material (such as polyurethane or silicone), allowing it to bend and expand freely as the base 41 extends and contracts with the stranded wire, effectively absorbing displacement stress and preventing pipe fatigue or sealing failure caused by rigid constraints.

[0039] Preferably, each elastic telescopic component 32 is equipped with a corresponding lubrication component 5, and the delivery pipes 51 of the two lubrication components 5 converge together and are provided with a common input interface.

[0040] When stranded wires bounce, wobble, or bend locally due to manufacturing tolerances, tension fluctuations, or pitch changes, the rigid groove bottom cannot provide effective buffering, which can easily cause concentrated instantaneous impact loads, aggravate equipment vibration, and even cause stranded wires to jam or jump out of the groove, thus disrupting the continuity and stability of the untwisting process.

[0041] To this end, the present invention also provides some embodiments in which a shaft 8 is rotatably connected to the inner bottom surface of the U-shaped groove 31. The shaft 8 extends along the width direction of the U-shaped groove 31 and can rotate freely about its own axis. Preferably, an elastic buffer layer is covered on the outer peripheral surface of the shaft 8. The elastic buffer layer is made of a flexible material with high elasticity, wear resistance and low coefficient of friction, such as rubber, polyurethane or silicone.

[0042] When the stranded wire enters the U-shaped groove 31 and falls above the shaft 8, it contacts the elastic buffer layer instead of directly contacting the rigid metal groove bottom, thus avoiding rigid collision.

[0043] In some embodiments, the hose 7 is connected to the top of the receiving groove, so that the lubricant entering the receiving groove can flow from top to bottom to ensure its coverage.

[0044] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. An integrated untwisting device for stranding wire, applied to stranded wire, comprising an untwisting motor, a transmission assembly, and a limiting assembly, wherein the untwisting motor drives the transmission assembly to rotate the stranded wire in the opposite direction, characterized in that, The stranded wire passes through the limiting component, which has a U-shaped groove for receiving the stranded wire. Two elastic telescopic components are respectively provided on opposite inner walls of the U-shaped groove. The two elastic telescopic components extend towards the middle of the U-shaped groove. The elastic telescopic components are inclined and gradually rise from near the inner wall of the U-shaped groove to away from it. When the stranded wire is pressed into the U-shaped groove, the elastic telescopic components change from an extended state to a telescopic state to allow the stranded wire to pass through. A rotatable spherical component is connected to the end of each elastic telescopic component. The spherical assembly includes a base and a sphere. The base is provided with a receiving groove for receiving the sphere, a portion of the sphere protruding from the receiving groove, and the opening of the receiving groove is constricted. The elastic telescopic component includes a return spring, and the inner wall of the U-shaped groove is provided with a channel for installing the return spring. The two ends of the return spring abut against the inner wall of the channel and the outer side of the base, respectively. The integrated untwisting device for the stranding machine also includes a lubrication assembly. The lubrication assembly includes a conveying pipe arranged within the limiting assembly. The conveying pipe is connected to the receiving groove of the base. A push-button switch assembly for controlling the opening or closing of the conveying pipe is provided on the conveying pipe. A pressure rod is connected to the outer side of the base. The pressure rod extends through the reset spring into the interior of the limiting assembly. The trigger end of the push-button switch assembly is located on the moving path of the pressure rod.

2. The integrated untwisting device for a stranding machine according to claim 1, characterized in that: The outlet end of the conveying pipe is located on the inner wall of the U-shaped groove, the inlet end of the conveying pipe is located on the outside of the limiting component, and a flexible hose is detachably connected between the outlet end of the conveying pipe and the base.

3. The integrated untwisting device for a stranding machine according to claim 1, characterized in that: The inner bottom surface of the U-shaped groove is rotatably connected to a shaft, and the outer side of the shaft is covered with an elastic buffer layer.

4. The integrated untwisting device for a stranding machine according to claim 2, characterized in that: Each of the elastic telescopic components is equipped with a corresponding lubrication component, and the delivery pipes of the two lubrication components converge together and are provided with a common input interface.

5. The integrated untwisting device for a stranding machine according to claim 2, characterized in that: The hose is connected to the top of the receiving tank.

6. The integrated untwisting device for a stranding machine according to claim 5, characterized in that: The portion of the delivery pipe located within the limiting component is inclined to match the elastic telescopic component.

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