Cable production stranding device

Abstract

The present application relates to the technical fields of frame stranding machine, and provides a stranding device for cable production, which comprises a rack and a rotating body, the rotating body is rotationally connected to the rack, is used for installing a wire shaft, and both ends of the rotating body are provided with end plates, one of the end plates is provided with a plurality of threading holes corresponding to the wire shaft for threading the wire, a fixed cylinder is arranged at the central axis of the rotating body, a plurality of sliding grooves corresponding to the threading holes are arranged on the outer wall of the fixed cylinder, and the sliding grooves extend along the axial direction of the fixed cylinder, a plurality of wire controllers are arranged in the sliding grooves in one-to-one correspondence, and the wire controllers are provided with clamping ends for clamping the wire ends of the wire to pull the wire under the driving of the wire controllers so that the wire passes through the threading holes. The technical problems of low efficiency, easy mistake and poor wire guiding tension in the prior art are solved.

Description

Technical Field

[0001] This invention relates to the field of wire stranding machine technology, and more specifically, to a wire stranding device for cable production. Background Technology

[0002] In the cable production process, the stranding process is a crucial step in forming the cable core by twisting multiple monofilaments together in a certain pattern. This operation is widely performed using a frame stranding machine. A traditional frame stranding machine typically consists of a rotating body with multiple spools mounted on it. After the wires are drawn from the spools, they need to pass through the threading holes on the end plate at the end of the rotating body, and then be stranded under the rotation of the rotating body.

[0003] In the stranding process of cable production, traditional frame stranding machines draw out wires from multiple spools on a rotating body, which are then stranded through the threading holes on the end plates to form the cable core. However, this method has significant shortcomings. The existing threading method involves: after all the spools are installed in place by a spool feeder, the operator holds the wire end and sequentially passes it through the slots on the conductor rod, then aligns it with the selected threading hole and slowly and steadily passes the wire end through the end plate. The operator needs to hold the wire end with their hand or needle-nose pliers, repeatedly clamping and pulling the wire end between the spools during threading. This makes it extremely easy for the wire end to pass through the wrong slot or for it to detach from the slot after passing through. Therefore, the existing threading work is cumbersome and prone to errors. If the wire end is not detected as being passed through the wrong slot in time, cable breakage or uneven stranding is very likely after the frame stranding machine has been running, requiring a shutdown and re-threading. Therefore, existing wire stranding machines are inefficient when there are many spools during the threading process, and are prone to misthreading or missing threads; the lack of effective guidance and tension control during the wire lead-out process leads to uneven tension, which affects the stability and mechanical properties of the cable core structure; and when the rotating body rotates at high speed, the wires are prone to friction with the equipment parts or entanglement, causing wear or even breakage, increasing production losses. Summary of the Invention

[0004] To overcome the above-mentioned defects, embodiments of the present invention provide a stranding device for cable production, which solves the technical problems of inefficiency and error-prone manual threading and poor wire guiding tension in the prior art.

[0005] According to one aspect, at least one embodiment of the present invention provides a stranding device for cable production, comprising: frame; A rotating body is rotatably connected to the frame for mounting bobbins. Both ends of the rotating body have end plates, and one of the end plates has several threading holes that correspond one-to-one with the bobbins for the thread to pass through. A fixed cylinder is disposed at the central axis of the rotating body. The outer wall of the fixed cylinder is provided with a plurality of sliding grooves corresponding one-to-one with the threading holes. The plurality of sliding grooves extend along the axial direction of the fixed cylinder. The thread controller has several parts, which are slidably arranged in the groove one to one. The thread controller has a snap-fit ​​end, which is used to snap the thread end with the thread so that the thread is pulled by the thread controller to make the thread pass through the thread hole.

[0006] Optionally, the control device includes: A support rod passes through the slide groove and is slidably connected to the slide groove, and a groove is formed on the outer end face of the support rod; The limiting pressure roller has two rollers, both of which are disposed in the groove. One of the limiting pressure rollers is rotatably disposed in the groove, and the other limiting pressure roller is fixedly disposed in the groove. A first thread-passing channel is formed between the two limiting pressure rollers, which extends axially along the fixed cylinder to allow the thread to pass through. An extension bracket is disposed on the outer end of the support rod near the wire hole. The snap-fit ​​end is disposed on the extension bracket. The extension bracket can extend into the wire hole under the drive of the wire controller so that the wire end passes through the wire hole.

[0007] Optionally, two parallel rotating rollers are rotatably mounted on the extension support. The rotating rollers are arranged perpendicularly to the limiting pressure roller, and a second thread-passing channel is formed between the two rotating rollers, which runs through the fixed cylinder axially to allow the thread to pass through.

[0008] Optionally, the control device further includes: A deflection frame is rotatably connected to the extension support via a rotating shaft that extends radially along the fixed cylinder. The deflection frame is provided with two extrusion rollers that are parallel to the deflection frame. The two extrusion rollers are located on the same side of the rotating shaft and are radially spaced along the rotating shaft. The two extrusion rollers are located between the rotating roller and the limiting pressure roller, and a passage gap for clamping the filament is formed between the two limiting pressure rollers. A tension spring, one end of which is disposed on the extension bracket, and the other end of which is disposed on the side of the deflection frame away from the extrusion roller; The extrusion roller adjacent to the rotating shaft can cause the deflection frame to swing towards the side closer to the rotating roller under the pressure of the yarn, and the tension spring is used to elastically pull the deflection frame in the opposite direction to tension the yarn.

[0009] Optional, also includes: A first clamping plate is disposed at the bottom of the deflection frame, and the first clamping plate is located between the extrusion roller and the limiting pressure roller; A fixing rod is disposed on the deflection frame and located on the side of the rotating shaft away from the extrusion roller; the fixing rod is arranged parallel to the rotating shaft. The second clamping plate is slidably sleeved on the fixed rod. The second clamping plate is arranged vertically opposite to the first clamping plate and is located between the extrusion roller and the limiting pressure roller. A space for the thread to pass through is formed between the first clamping plate and the second clamping plate. The second clamping plate can slide along the axial direction of the fixed rod. A driving component is disposed on the deflection frame. When the thread is in a slack state, the driving component controls the second clamping plate to move towards the first clamping plate so that the second clamping plate cooperates with the first clamping plate to clamp the thread.

[0010] Optionally, the driving element includes: A compression spring, with one end disposed on the deflection frame and the other end disposed on the second clamping plate, is used to elastically press against the second clamping plate so that the second clamping plate approaches and presses against the first clamping plate; A connecting strip is provided at one end on the deflection frame and at the other end on the second clamping plate. The connecting strip is used to fix the second clamping plate to the deflection frame. An easy-break groove is provided on the side wall of the connecting strip. A fixing plate is disposed on the extended support and close to the connecting strip. The fixing plate is provided with spikes that correspond to the folding groove. When the thread is in a slack state, under the elastic pull of the tension spring, the deflection frame can drive the connecting strip to swing towards the side closer to the fixing plate, so as to cut and break the folding groove with the help of the spikes. This allows the second clamping plate to move towards the first clamping plate under the action of the compression spring to clamp the thread.

[0011] Optional, also includes: The limiting assembly includes a ratchet and a pawl. The ratchet is connected to the outer end of the rotatable limiting pressure roller, and the pawl is hinged to the outer wall of the support rod. When the thread moves away from the thread hole, the pawl can engage with the ratchet to limit the rotation of the limiting pressure roller.

[0012] Optionally, the rotating shaft is provided with a connecting piece, and the connecting piece is provided with a plurality of connecting holes arranged radially at intervals along the rotating shaft, and the end of the tension spring is connected to one of the connecting holes.

[0013] Optionally, the adjacent sidewalls of the first clamping plate and the second clamping plate are provided with interlocking teeth, and the interlocking teeth on the first clamping plate and the interlocking teeth on the second clamping plate can mesh with each other to clamp the wire.

[0014] Optionally, the deflection frame is provided with two vertically corresponding strip grooves. The end of the extrusion roller located near the rotating shaft is provided with a wheel axle that is slidably disposed in the strip groove. A spring is provided in the strip groove, and the spring is used to push the wheel axle located in the strip groove to drive the extrusion roller near the rotating shaft to move to the other side of the extrusion roller.

[0015] The beneficial effects of this invention are as follows: In this invention, the device uses a thread control device to pull the thread through. Each thread control device corresponds one-to-one with a spool, and the thread control device for each spool is located on the side of the spool closest to the end plate, and also between two adjacent spools. Thus, when threading the spools, the operator only needs to stand at the position of the thread control device corresponding to the spool (i.e., between two spools) and thread the thread end through the control device. There is no need for the operator to repeatedly walk around to thread the thread, and the difficulty and workload of threading the thread end through the control device are far less than traditional threading methods. When there are a large number of spools, it can significantly shorten the threading time and significantly improve threading efficiency. Moreover, the one-to-one correspondence between the thread control device and the threading hole accurately guides the thread through the corresponding threading hole, reducing the occurrence of mis-threading and missed threading, and lowering the rework rate caused by threading errors. Meanwhile, the wire controller effectively straightens and guides the wire during the pulling process, preventing it from swinging randomly and providing a stable wire direction for subsequent stranding processes. This helps improve the stability of the cable core structure and ensures the overall quality of the cable core. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of the present invention and these drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the stranding device in one embodiment of the present invention; Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle; Figure 3 for Figure 1 Enlarged view of a section at point B in the middle; Figure 4 for Figure 3 Enlarged view of a section at point E in the middle; Figure 5 for Figure 1 A schematic diagram of the controller structure in the embodiment; Figure 6 for Figure 1A schematic diagram of the controller from another perspective in one embodiment; Figure 7 for Figure 1 A schematic diagram of the structure of the wire controller and the lead screw motor in the embodiment; Figure 8 for Figure 7 Enlarged view of a section at point C; Figure 9 for Figure 5 Enlarged view of a section at point D.

[0018] In the diagram: 1. Frame winding machine, 2. Rotating body, 3. End plate, 31. Threading hole, 4. Fixed cylinder, 41. Slide groove, 5. Wire controller, 50. Snap-fit ​​end, 51. Support rod, 510. Groove, 511. Threaded part, 52. Limiting pressure roller, 520. First wire passage channel, 53. Extended bracket, 54. Rotating roller, 540. Second wire passage channel, 55. Mounting rod, 56. Deflection frame, 560. Strip groove, 57. Extrusion roller, 58. Tension spring, 59. First clamping plate, 60. Second clamping plate, 61. Fixed rod, 7. Driving component, 71. Compression spring, 72. Fixed plate, 73. Spiked bar, 74. Connecting bar, 740. Easy-break groove, 8. Screw motor, 9. Limiting assembly, 10. Connecting piece, 1001. Connecting hole, 11. Rotating shaft. Detailed Implementation

[0019] 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 invention and not intended to limit it.

[0020] To keep the drawings concise, each drawing only schematically shows the parts relevant to the invention; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0021] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] 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.

[0023] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0024] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] like Figures 1-9 The diagram illustrates a stranding device for cable production according to an embodiment of the present invention, comprising a frame 1, a fixed cylinder 4, and wire controllers 5. The rotating body 2 of the frame 1 is used to mount the bobbins. One of the end plates 3 at both ends of the rotating body 2 has circumferentially spaced threading holes 31. The fixed cylinder 4 is located at the central axis of the rotating body 2 and is arranged axially. The rotating body 2 is divided into multiple equal regions, and the fixed cylinder 4 is also divided into multiple equal regions. A plurality of circumferentially spaced grooves 41 corresponding one-to-one with the threading holes 31 are provided on the outer wall of the fixed cylinder 4, and the grooves 41 extend axially along the fixed cylinder 4. The number of wire controllers 5 is the same as the number of bobbins, and each wire controller 5 is slidably disposed within a groove 41. The snap-fit ​​end 50 on the wire controller 5 can snap into the end of the wire.

[0026] For example, such as Figure 1 , Figure 2 and Figure 3As shown, before starting work, the spools are neatly installed in their designated positions on the rotating body 2, ensuring a secure installation to prevent wobbling during subsequent rotation. It should be noted that the spool installation method is the existing method. Next, the operator passes the end of each thread through the corresponding thread controller 5 and engages it with the locking end 50 of the controller 5. Specifically, the thread end is wrapped around the locking end to prevent it from coming off. Then, the thread controller 5 slides smoothly along the slide groove 41 towards the threading hole 31. During this sliding process, the thread controller 5 smoothly pulls the thread, causing it to gradually approach the threading hole 31 under tension, eventually passing through it successfully. After threading, the operator manually pulls the thread from the other end of the frame stranding machine 1 to the designated stranding position. Then start the frame winding machine 1. The rotating body 2 starts to rotate at the set speed, driving the bobbin installed on it to rotate synchronously. Under the rotation of the rotating body 2, the wires are twisted together around the central axis according to a certain pattern, gradually forming a stable cable core.

[0027] Additionally, it should be noted that the wire controller 5 of this device is driven by a lead screw motor 8, which is installed inside the fixed cylinder 4. The lead screw motor 8 corresponds one-to-one with the slide groove 41. A nut is provided on the support rod 51 of the wire controller 5, and the nut is threadedly connected to the lead screw motor 8.

[0028] In summary, this device uses a wire controller 5 to pull the thread through, changing the traditional manual method of threading one thread at a time. When there are many spools, it can significantly shorten the threading time and improve threading efficiency. Moreover, the wire controller 5 corresponds one-to-one with the threading hole 31, accurately guiding the thread through the corresponding hole 31, reducing the occurrence of misthreading or omissions, and lowering the rework rate caused by threading errors. At the same time, during the process of pulling the thread, the wire controller 5 effectively straightens and guides the thread, preventing it from swinging randomly during movement. This provides a stable thread direction for subsequent stranding processes, helping to improve the stability of the cable core structure and ensure the overall quality of the cable core.

[0029] In some examples, the wire controller 5 consists of a support rod 51, limiting pressure rollers 52, and an extension bracket 53. The support rod 51 passes through and is slidably connected to the slide groove 41, and has a groove 510 at its top. Two limiting pressure rollers 52 are arranged vertically opposite each other in the groove 510, one of which is rotatable, forming a first wire passage 520 between them. The extension bracket 53 is located on top of the support rod 51 and outside the slide groove 41, facing the wire hole 31, with the snap-fit ​​end 50 located thereon, and the extension bracket 53 passes through the wire hole 31.

[0030] For example, such as Figure 4 and Figure 5As shown, before connecting the wire to the snap-fit ​​end 50, the wire end is first manually passed through the first thread passage 520. Since the two limiting rollers 52 are arranged vertically opposite each other, the wire is limited by the two limiting rollers 52 during movement. The rotatable limiting roller 52 rotates with the wire, reducing friction and allowing the wire to move forward more smoothly. It is understood that since the maximum width of the extension bracket 53 is less than the diameter of the through hole, when the wire controller 5 slides to the end of the groove 41, the extension bracket 53 will pass through the threading hole 31. When the wire controller 5 moves, it will carry the snap-fit ​​wire end through the threading hole 31, facilitating subsequent manual pulling and traction of the wire. During the twisting process of the rotating body 2, the limiting rollers 52 always limit and guide the wire, ensuring a stable direction during twisting and preventing significant deviation.

[0031] Therefore, the first thread-passing channel 520 constrains the wire through two limiting pressure rollers 52, effectively limiting the wire's movement in the vertical direction, reducing the wire's offset during movement, and ensuring the consistency of the wire's movement path. The extension bracket 53 provides a guide track for the wire end to pass through the threading hole 31, ensuring that the wire end can pass through the threading hole 31 accurately, greatly improving the accuracy of threading. At the same time, the limiting pressure rollers 52 continuously control the wire throughout the stranding process, keeping the wire in an orderly state, which helps to ensure the structural uniformity of the cable core and improve the quality of the cable core.

[0032] In some examples, the outer support 53 is rotatably provided with two parallel rollers 54 on the side away from the support rod 51. The rollers 54 are arranged perpendicularly to the limiting pressure roller 52, and a second wire passage 540 is formed between them.

[0033] For example, such as Figure 4 As shown, after passing through the first thread guide channel 520, the thread continues into the second thread guide channel 540 before engaging with the snap-fit ​​end 50. During the thread's movement, because the rotating roller 54 is rotatable, when the thread contacts the roller 54, the roller 54 rotates synchronously with the thread, converting sliding friction into rolling friction and greatly reducing wear on the thread. During the twisting process, the thread is subjected to forces from different directions. The second thread guide channel 540 can limit the thread from a direction perpendicular to the first thread guide channel 520, preventing the thread from swaying significantly to both sides during twisting. The rotating roller 54 also provides some support for the thread, preventing it from sagging due to its own weight and affecting the twisting effect.

[0034] The second thread guide channel 540 works in conjunction with the first thread guide channel 520 to limit and guide the wire from two perpendicular directions, comprehensively restricting the wire's swaying and deviation, ensuring the wire remains stable during movement and stranding. The rotation of the roller 54 effectively reduces friction between the wire and equipment components, lowering the probability of wire wear and breakage, reducing wire loss during production, and lowering production costs. Simultaneously, the supporting function of the roller 54 ensures uniform tension of the wire during stranding, which is beneficial to improving the mechanical properties of the cable core.

[0035] In some examples, the wire controller 5 also includes a mounting rod 55, which is disposed on the extension bracket 53. The mounting rod 55 is arranged parallel to the top surface of the extension bracket 53 and extends inward to the extension bracket 53. The deflection frame 56 is rotatably connected to the end of the mounting rod 55 away from the extension bracket 53 via a rotating shaft 11. The deflection frame 56 is located inside the extension bracket 53. Two parallel extrusion rollers 57 are disposed on one side of the deflection frame 56. The two extrusion rollers 57 are fixedly connected to the deflection frame 56. The two extrusion rollers 57 are arranged parallel to the rotating roller 54 and located inward to the rotating roller 54. On one side of 54, two limiting pressure rollers 52 are used to clamp the wire located between the first wire passage 520 and the second wire passage 540; one end of the tension spring 58 is set on the extension bracket 53, and the other end is set on the side of the deflection frame 56 away from the extrusion roller 57; wherein the extrusion roller 57 located inside the deflection frame 56 can deflect the side of the deflection frame 56 on which the extrusion roller 57 is installed towards the rotating roller 54 under the pressure of the wire, and the tension spring 58 can pull the deflection frame 56 away from the rotating roller 54 in the opposite direction to cooperate with the extrusion roller 57 to tension the wire.

[0036] For example, such as Figure 4 As shown, during the movement of the thread located between the first thread guide channel 520 and the second thread guide channel 540, it exerts a resistance force on the pressing roller 57 located inside the deflection frame 56. Under this resistance force, the side of the deflection frame 56 where the pressing roller 57 is mounted will deflect towards the rotating roller 54. At this time, the tension spring 58 is stretched, generating a reverse tension force. When the tension of the thread changes, the resistance force will also change accordingly, and the tension of the tension spring 58 will be adjusted accordingly, so that the deflection frame 56 is in a new equilibrium state. When the thread tension increases, the resistance force increases, the deflection frame 56 deflects more towards the rotating roller 54, the tension of the tension spring 58 increases, and the tension force on the thread also increases; when the thread tension decreases, the resistance force decreases, and the tension of the tension spring 58 will pull the deflection frame 56 to rotate in the opposite direction, so that the pressure of the pressing roller 57 on the thread increases, ensuring that the thread is always in a suitable tension state.

[0037] Most importantly, when a thread suddenly breaks, its tension drops abruptly, causing it to slack. If this isn't stopped in time, a serious safety accident can occur. Traditionally, a cage-like protective cover is installed outside the frame stranding machine 1, but this only prevents the thread from being thrown outwards. It's important to note that the hinge position is the most vulnerable point for thread breakage on the frame stranding machine 1. When a thread breaks, the thread on one spool can become entangled with threads on other spools, leading to anything from numerous broken or tangled threads to complete damage to the entire frame stranding machine 1. Therefore, when a thread breaks, the tension spring 58 pulls the deflector 56. The threads in the first and second thread passages 520 and 540 stop being fed through these passages due to the twisting action of the deflector 56. The broken thread end will not return to the position of the rotating body 2, nor will it damage the threads on other spools.

[0038] The combination of the compression roller 57 and the tension spring 58 forms a dynamic tension adjustment mechanism that can respond to changes in yarn tension in real time, keeping the yarn tension uniform and stable. This avoids problems such as loose or overly tight cable core structure caused by uneven tension, ensuring the stability of the cable core structure. Uniform tension also improves the mechanical properties of the cable core, such as tensile strength, making the produced cable better meet usage requirements.

[0039] In some examples, the deflector frame 56 has a first clamping plate 59 at its bottom, located between the extrusion roller 57 and the limiting pressure roller 52. A fixed rod 61 is vertically mounted at the end away from the extrusion roller 57, on which a second clamping plate 60, vertically opposite to the first clamping plate 59, is slidably fitted. The yarn is located between the two clamping plates, and the second clamping plate 60 can slide axially along the fixed rod 61. A driving component 7 is mounted on the deflector frame 56 and is used to control the second clamping plate 60 to move towards the first clamping plate 59 to clamp the yarn when it becomes slack. It should be noted that the driving component 7 can use a detection controller and an electric actuator to drive the second clamping plate 60. For example, when yarn slack is detected, the electric actuator can push the second clamping plate 60 downwards towards the first clamping plate 59.

[0040] Specifically, such as Figure 4As shown, when the wire is taut, the resistance of the wire to the pressing roller 57 is relatively large, causing the deflection frame 56 to be in a certain deflection position. At this time, the drive component 7 does not move, and the second clamping plate 60 remains separated from the first clamping plate 59, allowing the wire to move smoothly between them without obstruction. When the wire becomes slack, the resistance of the wire to the pressing roller 57 decreases, triggering the drive component 7 to control the second clamping plate 60 to slide along the fixed rod 61 towards the first clamping plate 59. As the second clamping plate 60 moves, the distance between it and the first clamping plate 59 gradually decreases, eventually clamping the wire between them to prevent it from continuing to slack off or become tangled. When the wire is slack, the first clamping plate 59 and the second clamping plate 60 can clamp the wire in time, effectively avoiding tangling and misalignment caused by slackness, ensuring the continuity and stability of the stranding process. This automatic clamping mechanism requires no manual intervention, improving the automation level of production and reducing the workload of operators. At the same time, preventing excessive slack in the wires also helps to maintain the normal progress of subsequent stranding processes and ensure the stability of the cable core quality.

[0041] In some examples, the drive element 7 includes a compression spring 71, a connecting bar 74, and a fixing plate 72. One end of the compression spring 71 is connected to the deflector frame 56, and the other end is connected to the second clamping plate 60, for moving the second clamping plate 60 toward and abutting against the first clamping plate 59. One end of the connecting bar 74 is connected to the deflector frame 56, and the other end is connected to the second clamping plate 60; it has a folding groove 740 in the center of its surface. The fixing plate 72 is located on the extension bracket near the connecting bar 74, and has spiked strips 73 opposite to the folding groove 740.

[0042] For example, such as Figure 5 and Figure 7As shown, when the thread is taut, the connecting bar 74 remains intact, and the compression spring 71 is compressed. Due to the action of the connecting bar 74, the second clamping plate 60 separates from the first clamping plate 59. When the thread is slack, the tension of the tension spring 58 overcomes the resistance of the thread to the pressing roller 57, pulling the deflection frame 56 to rotate. As the deflection frame 56 rotates, the connecting bar 74 gradually approaches the spike bar 73, and eventually the easy-break groove 740 of the connecting bar 74 will hit the spike bar 73. Under the action of the impact force, the connecting bar 74 breaks at the easy-break groove 740. After the connecting bar 74 breaks, the elastic force of the compression spring 71 is released, pushing the second clamping plate 60 to move rapidly along the fixing rod 61 towards the first clamping plate 59, so that the second clamping plate 60 and the first clamping plate 59 fit tightly together, firmly clamping the thread. The drive component 7 of this mechanical structure reacts extremely quickly, triggering the clamping action the instant the thread slacks. Compared to manual detection and handling, this significantly shortens the response time and avoids problems such as thread tangling during this period. The entire process requires no external energy source such as electricity, relying entirely on mechanical force, ensuring reliable and stable operation unaffected by external factors. The automatic clamping mechanism further improves the automation level of production, reduces the risks caused by human error, and guarantees the stability and continuity of the production process.

[0043] In some examples, a limit assembly 9 is rotatably provided on the outer wall of the support rod 51, the ratchet of which is fixedly connected to the axle of the rotatable limit pressure roller 52.

[0044] For example, such as Figure 5 As shown, when the wire moves normally towards the threading hole 31, it drives the rotatable limiting roller 52 to rotate in the forward direction. At this time, the limiting component 9 does not function, and the limiting roller 52 can rotate freely, ensuring smooth wire movement. When the wire breaks, it may move away from the threading hole 31, causing the limiting roller 52 to rotate in the reverse direction. At this time, the pawl in the limiting component 9 will engage in the tooth groove of the ratchet, preventing the ratchet from continuing to rotate, thus stopping the limiting roller 52 from rotating in the reverse direction. This changes the rolling friction between the limiting roller 52 and the wire into sliding friction, slowing down the wire's movement and providing sufficient reaction and release time for the drive component 7. Similarly, the setting of the limiting component 9 effectively prevents the wire from retreating during the stranding process, ensuring that the wire is always in the appropriate position and maintaining stable wire tension. This avoids problems such as loose cable core structure and uneven pitch caused by wire retreat, improving the structural stability and quality consistency of the cable core. At the same time, it reduces the need for readjustment due to the retraction of the yarn, saving production time and improving production efficiency.

[0045] In some examples, a connecting piece 10 is provided on the side of the top center of the deflection frame 56 near the fixed rod 61, and the end of the tension spring 58 away from the extension bracket is connected to the deflection frame 56 through the connecting piece 10.

[0046] For example, such as Figure 5 and Figure 9 As shown, the tension spring 58 transmits tension to the deflector frame 56 via the connecting piece 10. When the yarn moves normally and presses against the pressing roller 57, the tension of the tension spring 58 balances the pressure exerted by the yarn on the pressing roller 57, keeping the deflector frame 56 in a suitable position and ensuring that the pressing roller 57 applies appropriate pressure to the yarn, achieving stable tension of the yarn. When the yarn slacks, the pressure exerted by the yarn on the pressing roller 57 decreases, and the tension of the tension spring 58 pulls the deflector frame 56 to rotate via the connecting piece 10, causing a change in the position of the deflector frame 56, thereby triggering the drive component 7 to clamp the yarn. The main function of the connecting piece 10 is to adjust the tension of the tension spring 58 on the deflector frame 56. Therefore, the length of the connecting piece 10 is replaceable. Since yarns of different diameters exert different pressures on the pressing roller 57 on the deflector frame 56, changing the length of the connecting piece 10 can change the tension on the deflector frame 56, which saves a lot of money compared to directly replacing the tension spring 58.

[0047] Alternatively, a connecting piece 10 is provided on the rotating shaft 11, and the connecting piece 10 has multiple connecting holes 1001 arranged radially at intervals along the rotating shaft 11. The end of the tension spring 58 is connected to one of the connecting holes. The magnitude of the tension on the deflection frame 56 can be changed by changing the position of the connecting hole 1001 connected to the end of the tension spring 58.

[0048] like Figure 5 As shown, in some examples, both the first clamping plate 59 and the second clamping plate 60 are provided with interlocking teeth. These interlocking teeth significantly enhance the clamping effect of the clamping plates on the thread, greatly increasing the friction between the clamping plates and the thread, effectively preventing the thread from slipping under clamping conditions, and ensuring that the thread is firmly fixed when it slackens. This reliable clamping further ensures effective control over the slackening of the thread, reducing problems such as tangling and misalignment caused by thread slippage, improving the reliability of the device when handling thread slackening, and contributing to maintaining stable production.

[0049] In some examples, the deflector 56 is provided with a strip groove 560, and the axle of the inner extrusion roller 57 is slidably disposed in the strip groove 560. There is a spring in the groove to push the extrusion roller 57 to extrude another extrusion roller 57.

[0050] For example, such as Figure 5As shown, under the elastic force of the spring, the pressing roller 57 located in the strip groove 560 is always pushed towards the other pressing roller 57, maintaining a certain pressure between the two pressing rollers 57. When the yarn passes between the two pressing rollers 57, it is clamped by the two pressing rollers 57. When the diameter of the yarn changes slightly, the pressing roller 57 located in the strip groove 560 will slide along the strip groove 560 under the action of the spring, automatically adjusting the distance between the two pressing rollers 57 to ensure that the clamping force on the yarn is always kept within a suitable range. Together with the action of the tension spring 58, this achieves the control of the yarn tension.

[0051] The spring mechanism allows for flexible adjustment of the clamping force between the two extrusion rollers 57, better adapting to minute changes in wire diameter and preventing excessive or insufficient clamping force due to variations in wire diameter. This ensures accurate and stable tension control, maintaining appropriate tension for the wire at different diameters, which helps improve the uniformity of the cable core's quality. Simultaneously, this automatic adjustment mechanism reduces the need for manual adjustments to the equipment due to changes in wire diameter, improving production adaptability and efficiency.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A stranding device for cable production, characterized in that, include: Rack (1); The rotating body (2) is rotatably connected to the frame (1) for mounting the bobbin. Both ends of the rotating body (2) have end plates (3), and one of the end plates (3) has several threading holes (31) that correspond one-to-one with the bobbin for the thread to pass through. A fixed cylinder (4) is set at the central axis of the rotating body (2). Several grooves (41) corresponding to the wire holes (31) are opened on the outer wall of the fixed cylinder (4). Several grooves (41) extend along the axial direction of the fixed cylinder (4). The wire controller (5) has several units, and each unit is slidably disposed in the groove (41). The wire controller (5) has a snap-fit ​​end (50), which is used to snap-fit ​​the end of the wire to pull the wire under the drive of the wire controller (5) so that the wire passes through the thread hole (31). The control device (5) includes: A support rod (51) passes through the slide groove (41) and is slidably connected to the slide groove (41). A groove (510) is provided on the outer end face of the support rod (51). There are two limiting pressure rollers (52), both of which are disposed in the groove (510). One of the limiting pressure rollers (52) is rotatably disposed in the groove (510), and the other limiting pressure roller (52) is fixedly disposed in the groove (510). A first thread passage (520) is formed between the two limiting pressure rollers (52) and extends axially along the fixed cylinder (4) for the thread to pass through. An extension bracket (53) is disposed on the side of the outer end of the support rod (51) near the wire hole (31). The snap-fit ​​end (50) is disposed on the extension bracket (53). The extension bracket (53) can extend into the wire hole (31) under the drive of the wire controller (5) so that the wire end passes through the wire hole (31). Two parallel rotating rollers (54) are rotatably mounted on the extension bracket (53). The rotating rollers (54) are arranged perpendicularly to the limiting pressure roller (52). A second thread passage (540) is formed between the two rotating rollers (54) and extends through the fixed cylinder (4) to allow the thread to pass through.

2. The stranding device for cable production according to claim 1, characterized in that, The control device (5) also includes: A deflection frame (56) is rotatably connected to the extension bracket (53) via a rotating shaft (11). The rotating shaft (11) extends radially along the fixed cylinder (4). Two extrusion rollers (57) are provided on the deflection frame (56) parallel to the deflection frame (56). The two extrusion rollers (57) are located on the same side of the rotating shaft (11) and are radially spaced along the rotating shaft (11). The two extrusion rollers (57) are located between the rotating roller (54) and the limiting pressure roller (52). A passage gap for clamping the filament is formed between the two extrusion rollers (57). A tension spring (58) has one end set on the extension bracket (53) and the other end set on the deflection frame (56) away from the extrusion roller (57); The extrusion roller (57) adjacent to the rotating shaft (11) can cause the deflection frame (56) to swing towards the side closer to the rotating roller (54) under the pressure of the yarn. The tension spring (58) is used to elastically pull the deflection frame (56) in the opposite direction to tension the yarn.

3. The stranding device for cable production according to claim 2, characterized in that, Also includes: The first clamping plate (59) is disposed at the bottom of the deflection frame (56), and the first clamping plate (59) is located between the extrusion roller (57) and the limiting pressure roller (52); A fixing rod (61) is provided on the deflection frame (56) and located on the side of the rotating shaft (11) away from the extrusion roller (57). The fixing rod (61) is arranged parallel to the rotating shaft (11). The second clamping plate (60) is slidably sleeved on the fixed rod (61). The second clamping plate (60) is arranged vertically opposite to the first clamping plate (59) and is located between the extrusion roller (57) and the limiting pressure roller (52). A space for the thread to pass through is formed between the first clamping plate (59) and the second clamping plate (60). The second clamping plate (60) can slide axially along the fixed rod (61). The driving component (7) is disposed on the deflection frame (56). When the thread is in a slack state, the driving component (7) controls the second clamping plate (60) to move towards the first clamping plate (59) so that the second clamping plate (60) cooperates with the first clamping plate (59) to clamp the thread.

4. A stranding device for cable production according to claim 3, characterized in that, The driving component (7) includes: A compression spring (71) is provided at one end on the deflection frame (56) and at the other end on the second clamping plate (60). The compression spring (71) is used to elastically press against the second clamping plate (60) so that the second clamping plate (60) approaches and presses against the first clamping plate (59). A connecting strip (74) is provided at one end on the deflection frame (56) and at the other end on the second clamping plate (60). The connecting strip (74) is used to fix the second clamping plate (60) to the deflection frame (56). A folding groove (740) is provided on the side wall of the connecting strip (74). A fixing plate (72) is disposed on the extension bracket (53) and close to the connecting strip (74). The fixing plate (72) is provided with a spike strip (73). The spike strip (73) is correspondingly disposed to the easy-break groove (740). When the thread is in a slack state, under the elastic pull of the tension spring (58), the deflection frame (56) can drive the connecting strip (74) to swing towards the side close to the fixing plate (72) so as to cut the easy-break groove (740) and break the easy-break groove (740) by means of the spike strip (73). Then, the second clamping plate (60) moves towards the first clamping plate (59) under the action of the compression spring (71) to clamp the thread.

5. A stranding device for cable production according to claim 1, characterized in that, Also includes: The limiting component (9) includes a ratchet and a pawl. The ratchet is connected to the outer end of the rotatable limiting pressure roller (52), and the pawl is hinged to the outer wall of the support rod (51). When the thread moves away from the thread hole (31), the pawl can engage with the ratchet to limit the rotation of the limiting pressure roller (52).

6. A stranding device for cable production according to claim 3, characterized in that, A connecting piece (10) is provided on the rotating shaft (11), and a plurality of connecting holes (1001) are arranged radially at intervals along the rotating shaft (11). The other end of the tension spring (58) is connected to one of the connecting holes (1001).

7. A stranding device for cable production according to claim 3, characterized in that, The first clamping plate (59) and the second clamping plate (60) are provided with interlocking teeth on their adjacent sidewalls. The interlocking teeth on the first clamping plate (59) and the interlocking teeth on the second clamping plate (60) can mesh with each other to clamp the wire.

8. A stranding device for cable production according to claim 2, characterized in that, The deflection frame (56) is provided with two vertically corresponding strip grooves (560). The end of the extrusion roller (57) located near the rotating shaft (11) is provided with a wheel axle that is slidably disposed in the strip groove (560). A spring is provided in the strip groove (560). The spring is used to push the wheel axle located in the strip groove (560) to drive the extrusion roller (57) near the rotating shaft (11) to move to the other extrusion roller (57).

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