A stranding device and method for cable production

Abstract

This invention relates to the field of cable production technology, and in particular to a stranding device and method for cable production. The device includes a base, a feeding assembly located at the top of the base for circumferentially winding multiple strands of conductor, and a conveying assembly for clamping and shaping the cable. The feeding assembly includes a rotating frame and multiple fixed frames rotatably mounted on the rotating frame. Universal sleeves are movably mounted on the fixed frames, and a torsion assembly for radially twisting a single strand of conductor is disposed inside the universal sleeves. This invention first applies a radial torsional force to the single strand of conductor through the torsion assembly, and then, with the synchronous winding of the feeding assembly and the traction of the stranded cable, achieves a spiral-shaped, self-tightly wound stranding of multiple strands of conductor. Furthermore, a pressure sensor monitors the torsional force in real time, and the rotation speed of the torsion sleeve is dynamically adjusted based on the monitoring data to ensure consistent stranding force for each strand, effectively avoiding secondary twisting or loose stranding of the cable, and achieving cable stranding processing with a regular structure and stable quality.

Description

Technical Field

[0001] This invention relates to the field of cable production technology, and in particular to a stranding device and method for cable production. Background Technology

[0002] Cables are core devices capable of transmitting electrical energy or signals. They are typically composed of several independent conductors or multiple groups of conductors combined in a specific manner, and are widely used in power transmission, communication, industrial control, and many other fields. Stranding machines, as key mechanical equipment in cable production, can adapt to the processing needs of various soft and hard conductors. Their core function is to twist multiple single conductors into a single strand according to preset stranding directions, pitches, and other parameters through a specific stranding mechanism, ensuring that the formed wire meets the technological requirements of subsequent processing and practical applications in terms of mechanical strength, flexibility, and conductivity.

[0003] Common stranding machines typically consist of a stranding reel and cabling equipment. During production, multiple strands of wire are passed through several through holes on the edge of the stranding reel, and the rotation of the reel causes the multiple strands to be stranded into a cable. This type of equipment achieves stranding simply by winding multiple strands of wire, lacking an independent control mechanism for the torsional force during the winding of individual strands. This not only makes it difficult to accurately control the stranding force of each strand, but also leads to problems such as loose structure and poor winding regularity in the stranded cable. An additional extrusion and straightening process is required to compensate for the insufficient stranding tightness, increasing the production process and potentially damaging the cable structure due to secondary processing, affecting the mechanical properties and processing quality of the final product.

[0004] To address the aforementioned technical deficiencies, a solution is proposed. First, a torsion assembly applies a radial torsional force to a single conductor. Then, with the synchronous winding of a feeding assembly and the traction of the stranded cable, multiple conductors are spirally and autonomously twisted together tightly. A pressure sensor monitors the torsional force in real time, and the rotation speed of the torsion sleeve is dynamically adjusted based on the monitoring data to ensure consistent twisting force across all conductors. This effectively avoids secondary twisting or loose stranding of the cable, resulting in a cable stranding process with a neat structure and stable quality. Summary of the Invention

[0005] The purpose of this invention is to provide a stranding device and method for cable production to solve the aforementioned technical defects.

[0006] The objective of this invention can be achieved through the following technical solution: a stranding device for cable production, comprising a base, a feeding assembly for circumferentially winding multiple strands of conductor at the top of the base, and a conveying assembly for clamping and shaping the cable. The feeding assembly includes a rotating frame and multiple fixed frames rotatably mounted on the rotating frame. A feeding drum is detachably mounted on the fixed frames, and a universal sleeve is movably mounted on the fixed frames. A torsion assembly for radially twisting a single strand of conductor is provided inside the universal sleeve. The torsion assembly includes a torsion sleeve, and multiple adjusting plates are provided inside the torsion sleeve. Multiple clamping wheels are rotatably mounted at equal intervals on the adjusting plates.

[0007] Preferably, the universal sleeve is rotatably connected to the torsion sleeve, and the torsion sleeve has an installation groove. An ear plate extending into the installation groove is fixedly connected to the universal sleeve, and a pressure sensor is fixedly installed between one side of the installation groove and the ear plate.

[0008] Preferably, a movable frame is rotatably connected to the fixed frame via a first rotating shaft, and the movable frame is rotatably connected to a universal sleeve via a second rotating shaft, with the second rotating shaft and the first rotating shaft having their axes perpendicularly distributed.

[0009] Preferably, the adjusting plate is fixedly connected with a support rod one and a support rod two that are slidably connected to the torsion sleeve, and the end of the support rod two is provided with an inclined surface one. The threaded end of the torsion sleeve is threadedly connected with a fixed sleeve, and the annular inner wall of the fixed sleeve is provided with an inclined surface two. The annular surface of the clamping wheel is fixedly connected with an anti-slip rubber sleeve.

[0010] Preferably, the torsion sleeve has a plurality of limiting grooves on its threaded outer wall, the fixing sleeve is threadedly connected to a limiting screw extending into the corresponding limiting groove, and the fixing sleeve is fixedly connected to a wire tube that is adapted to the diameter of the corresponding wire.

[0011] Preferably, the fixed frame has symmetrically arranged abutment plates on both sides, and the opposite sides of the abutment plates are damped and rotatably connected to conical clamping platforms. The abutment plates are fixedly connected to guide rods that are slidably connected to the fixed frame. The fixed frame is rotatably connected to a first linkage plate, and the end of the first linkage plate is hinged to the corresponding abutment plate with a second linkage plate. The fixed frame is threadedly connected to a screw that is rotatably connected to the corresponding abutment plate.

[0012] Preferably, the top of the base is fixedly connected to a fixed plate that is rotatably connected to the rotating frame, and a motor for driving the rotating frame to rotate is installed on the fixed plate by bolts, and a motor for driving the corresponding fixed frame to rotate is fixedly installed on the rotating frame by bolts.

[0013] Preferably, the conveying assembly includes a fixed frame fixedly installed on the top of the base, and two sets of U-shaped seats arranged in a vertically mirrored manner are provided in the fixed frame. An electric push rod is installed on the fixed frame to drive the corresponding U-shaped seat to move up and down. Multiple clamping wheels with an I-shaped structure, namely clamping wheel 1 and clamping wheel 2, are rotatably installed on the U-shaped seat and on both sides of the electric push rod.

[0014] Preferably, a plurality of anti-slip rubber strips with an arc-shaped structure are fixedly connected to the annular outer wall of the clamping wheel one, and a plurality of rubber bladders with an arc-shaped structure are fixedly connected to the annular outer wall of the clamping wheel two, and the interior of the rubber bladders is filled with hydraulic oil, and a wire-gathering ring is fixedly connected to one side of the fixing frame by an L-shaped rod.

[0015] This invention also proposes a stranding method for cable production, comprising the following steps:

[0016] S1: Centering clamp for the wire reel;

[0017] S2: Movable clamp for single-strand and multi-strand wires;

[0018] S3: A single-strand conductor is subjected to radial torsion force and controlled in real time, while multiple strands of conductors are wound synchronously, so that the multiple strands of conductors are spirally and tightly twisted together.

[0019] S4: Rounding and shaping of the cross-section clamping deformed cable.

[0020] The beneficial effects of this invention are as follows:

[0021] (1) The present invention first applies radial torsional force to a single conductor by actively applying a torsion component, and then achieves synchronous winding of multiple conductors by using the driven circumferential rotation of the rotating frame. Combined with the traction of the external winding equipment, the multiple conductors are driven by their own torsional force and the driven winding to promote the spiral-shaped autonomous tight winding and twisting. At the same time, the torsional force is monitored in real time by the pressure sensor between the universal sleeve and the torsion sleeve. The controller dynamically adjusts the rotation speed of the torsion sleeve according to the monitoring data to ensure the uniformity of the winding force of each conductor. This effectively avoids the problem of the cable being twisted and twisted again due to excessive torsion of the conductor, or the cable being twisted loosely due to insufficient torsion force of the conductor. Thus, the high-quality cable strand processing with regular structure is achieved.

[0022] (2) This invention addresses the problem of non-circular deformation of the cross-section of stranded cables caused by clamping the stranded cables to ensure the uniformity of the strands during the stranding process of multi-strand conductors. By using multiple rubber bladders on the surface of the clamping wheel and the hydraulic oil filled inside them, when the rubber bladders come into contact with the deformed cable, the middle of the rubber bladder is depressed and the internal hydraulic oil flows to both sides, causing the sides of the rubber bladder to expand. This forms a uniform wrapping and compression on the non-compression surface of the cable, realizing the restoration of the cross-sectional deformation to a circular shape. This effectively avoids the problem of uneven subsequent wrapping thickness caused by the irregularity of the wire body, and improves the overall product quality and reliability of the cable. Attached Figure Description

[0023] The invention will now be further described with reference to the accompanying drawings;

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2 This is a schematic diagram showing the cooperation between the feeding component and the torsion component of the present invention;

[0026] Figure 3 This is a partial structural schematic diagram of the feeding assembly of the present invention;

[0027] Figure 4 This is a schematic diagram of the fit between the universal sleeve and the torsion sleeve of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the universal sleeve of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the torsion sleeve of the present invention;

[0030] Figure 7 This is a schematic diagram of the connection between the torsion sleeve and the fixed sleeve of the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of the transmission component of the present invention.

[0032] Legend:

[0033] 1. Base; 11. Fixing plate;

[0034] 2. Feeding assembly; 21. Rotating frame; 22. Fixed frame; 23. Universal sleeve; 24. Ear plate; 25. Pressure sensor; 26. Movable frame; 27. Contact plate; 28. Conical clamp; 29. ​​Screw;

[0035] 3. Conveying assembly; 31. Fixing frame; 32. U-shaped seat; 33. Electric push rod; 34. Clamping wheel one; 35. Clamping wheel two; 36. Anti-slip rubber strip; 37. Rubber bladder; 38. Cable gathering ring;

[0036] 4. Torsion assembly; 41. Torsion sleeve; 42. Adjusting plate; 43. Wire clamp wheel; 44. Support rod one; 45. Support rod two; 46. Fixing sleeve; 47. Conductor tube. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1: Please refer to Figures 1-8 As shown, the lack of an independent control mechanism for the torsional force during the winding of a single conductor makes it difficult to accurately control the twisting force of each conductor, leading to problems such as loose structure and poor winding regularity in the stranded cable. The following solutions can be used to address this:

[0039] This embodiment provides a stranding device for cable production, including a base 1, a feeding assembly 2 located on the top of the base 1 for circumferentially winding multiple strands of conductors, and a conveying assembly 3 for clamping and shaping the cable. The feeding assembly 2 includes a rotating frame 21 and multiple fixed frames 22 rotatably mounted on the rotating frame 21. A feeding drum is detachably mounted on the fixed frames 22.

[0040] When multiple sets of conductors are twisted together, multiple fixed frames 22 carry corresponding wire feeding drums to rotate, thereby achieving the twisting and deflection of the conductors between the wire feeding drums and the twisted cable. Then, through the revolution and rotation of multiple fixed frames 22, the twisting and deflection force of the conductors themselves is used to cause multiple conductors to spirally and autonomously twist together, thereby ensuring the twisting tightness of the cable after twisting, without the need for additional equipment for secondary extrusion and straightening treatment.

[0041] And the universal sleeve 23 is installed in the movement. The universal sleeve 23 is provided with a torsion assembly 4 for radially twisting a single strand of wire. The torsion assembly 4 includes a torsion sleeve 41, and the torsion sleeve 41 is provided with multiple adjustment plates 42. Multiple wire clamping wheels 43 are rotatably installed on the adjustment plates 42 at equal intervals.

[0042] Multiple adjusting plates 42 move relative to each other, causing the clamping wheel 43 to clamp the wire inside the twisting sleeve 41. As the twisting sleeve 41 rotates through the fixed frame 22, the wire is effectively twisted. The twisting force is controlled by adjusting the rotation speed of the twisting sleeve 41.

[0043] The universal sleeve 23 is rotatably connected to the torsion sleeve 41, and the torsion sleeve 41 is provided with an installation groove. The universal sleeve 23 is fixedly connected to an ear plate 24 extending into the installation groove. A pressure sensor 25 is fixedly installed between one side of the installation groove and the ear plate 24. The universal sleeve 23 pushes the torsion sleeve 41 to rotate indirectly by the ear plate 24 abutting against the pressure sensor 25. The pressure sensor 25 monitors the force applied by the universal sleeve 23 to the torsion sleeve 41 in real time.

[0044] A movable frame 26 is rotatably connected to the fixed frame 22 via a pivot shaft. The movable frame 26 is rotatably connected to the universal sleeve 23 via a pivot shaft 2, and the axes of the pivot shaft 2 and the pivot shaft 1 are perpendicular to each other. The movable frame 26, the pivot shaft 1, the pivot shaft 2, and the universal sleeve 23 work together to form a universal joint structure, which causes the rotating frame 21 to carry multiple fixed frames 22 to rotate circumferentially for wire laying. This passively achieves the avoidance of interference between the wire laying direction and the rotation of the fixed frame 22 during the wire stranding process.

[0045] The adjusting plate 42 is fixedly connected to the support rod 44 and the support rod 45 which are slidably connected to the torsion sleeve 41. Through the cooperation of the support rod 44 and the support rod 45, the adjusting plate 42 is rotated synchronously during the rotation of the torsion sleeve 41, thereby driving the wire to be radially torsion. The end of the support rod 45 is provided with an inclined surface 1. The threaded end of the torsion sleeve 41 is threadedly connected to the fixed sleeve 46, and the annular inner wall of the fixed sleeve 46 is provided with an inclined surface 2.

[0046] After the wire on the unwinding spool passes through the corresponding torsion sleeve 41 and the fixed sleeve 46, the fixed sleeve 46 is rotated, causing the inclined surface 2 on the fixed sleeve 46 to abut against the inclined surface 1 at the end of the multiple support rods 2 45. By rotating the fixed sleeve 46, the movement of the inclined surface 2 guides the inclined surface 1, causing the multiple support rods 2 45 to move relative to the corresponding adjusting plate 42, so that the multiple clamping wheels 43 in the torsion sleeve 41 clamp the wire in the center.

[0047] An anti-slip rubber sleeve is fixedly connected to the annular surface of the wire clamping wheel 43. The wire clamping wheel 43 clamps the wire, and the anti-slip rubber sleeve on the wire clamping wheel 43 is used to avoid interference with the traction and transportation of the wire while achieving effective radial deflection of the wire.

[0048] The torsion sleeve 41 has several limiting grooves on its threaded outer wall. The fixed sleeve 46 is threaded with limiting screws that extend into the corresponding limiting grooves. After the multiple wire clamping wheels 43 in the torsion sleeve 41 clamp the wire, the limiting screws are rotated so that their ends abut against the corresponding limiting grooves, thereby limiting the rotation of the fixed sleeve 46 to prevent it from coming off. The fixed sleeve 46 is fixedly connected with a wire tube 47 that is compatible with the diameter of the corresponding wire. When wires of different sizes are twisted and deflected between the wire reel and the stranded cable by replacing the compatible wire tube 47, the wire tube 47 is used to limit the single wire from twisting itself before contacting other wires, thereby ensuring the effective stranding of multiple wires.

[0049] The fixed frame 22 has symmetrically arranged abutment plates 27 on both sides, and the opposite sides of the abutment plates 27 are connected to the cone clamps 28 with damping rotation. When the two sets of cone clamps 28 move relative to each other to fix the unwinding drum, the damping rotation of the cone clamps 28 prevents the unwinding drum from unwinding quickly, thus avoiding the problem of irregular overall structure of stranded cable. The abutment plates 27 are fixedly connected to the guide rods that are slidably connected to the fixed frame 22.

[0050] A first linkage plate is rotatably connected to the fixed frame 22, and a second linkage plate is hinged between the end of the first linkage plate and the corresponding abutment plate 27. A screw 29 is threadedly connected to the fixed frame 22 and rotatably connected to the corresponding abutment plate 27. A torsion wheel is installed at the end of the screw 29. By rotating the screw 29, the corresponding abutment plate 27 is moved. Another set of abutment plates 27 moves relative to the first linkage plate through the second linkage plate, causing the conical clamping platform 28 on the two sets of abutment plates 27 to extend into the center hole of the unwinding drum, and centering and clamping the unwinding drum.

[0051] The top of the base 1 is fixedly connected to a fixed plate 11 that is rotatably connected to the rotating frame 21, and a motor 1 that drives the rotating frame 21 to rotate is installed on the fixed plate 11 by bolts, and a motor 2 that drives the corresponding fixed frame 22 to rotate is fixedly installed on the rotating frame 21 by bolts.

[0052] The external controller controls the rotation of motor one and motor two. The external winding equipment pulls the multiple strands of wire synchronously. Motor two drives the corresponding fixed frame 22 to rotate. The fixed frame 22 carries the wire unwinding drum and the torsion sleeve 41 to rotate, causing the wire in the wire tube 47 to twist and deflect, so that the wire itself has a radial twisting and deflecting force. Motor one drives the rotating frame 21 to carry multiple fixed frames 22 to rotate circumferentially, so that the multiple strands of wire are spirally twisted and twisted together.

[0053] The pressure sensor 25 monitors the force applied by the universal sleeve 23 to the torsion sleeve 41 in real time and transmits the monitored pressure data to the external controller. The controller presets a pressure range value. If the pressure data is less than the minimum value of the preset pressure range, the controller controls the speed of the second motor to increase. If the pressure data is greater than the maximum value of the preset pressure range, the controller controls the speed of the second motor to decrease. This is to prevent the wire twisting and deflection force from being too large, which would cause the twisted cable to twist again after the multi-strand wires are twisted, and to prevent the twisting and deflection force from being too small, which would result in insufficient twisting force of the multi-strand wires and cause the twisted cable to loosen.

[0054] The transmission assembly 3 includes a fixed frame 31 fixedly installed on the top of the base 1, and two sets of U-shaped seats 32 arranged in a vertically mirrored manner are provided in the fixed frame 31. An electric push rod 33 is installed on the fixed frame 31 to drive the corresponding U-shaped seat 32 to move up and down. Multiple clamping wheels 34 and clamping wheels 35 with I-shaped structure are rotatably installed on the U-shaped seat 32 and on both sides of the electric push rod 33. After the stranded cable passes between the two sets of U-shaped seats 32, the two sets of electric push rods 33 push the corresponding U-shaped seats 32 to move relative to each other, so that the clamping wheels 34 and clamping wheels 35 in opposite directions clamp the stranded cable to prevent the stranded cable from twisting or deflecting.

[0055] Example 2: Please refer to Figure 8 As shown, to address the issue of uneven sheathing thickness caused by non-circular deformation of the cable cross-section during the stranding process of multi-strand conductors, which can easily lead to deflection when clamping the stranded cable, the following solutions can be implemented:

[0056] In this embodiment, the conveying component 3 includes a fixed frame 31 fixedly installed on the top of the base 1, and two sets of U-shaped seats 32 arranged in a vertically mirrored manner are provided in the fixed frame 31. An electric push rod 33 is installed on the fixed frame 31 to drive the corresponding U-shaped seat 32 to move up and down. Multiple clamping wheels 34 and clamping wheels 35 with I-shaped structure are rotatably installed on the U-shaped seat 32 and on both sides of the electric push rod 33.

[0057] Multiple anti-slip rubber strips 36 with an arc-shaped structure are fixedly connected to the annular outer wall of clamping wheel 34. Multiple rubber bladders 37 with an arc-shaped structure are fixedly connected to the annular outer wall of clamping wheel 35. The rubber bladders 37 are filled with hydraulic oil. The stranded cable first passes through the clamping wheel 34 between the U-shaped seats 32. The multiple anti-slip rubber strips 36 on the surface of the clamping wheel 34 increase the clamping area of ​​the cable, which prevents the cable from being radially twisted and causes the cross-section of the cable to be deformed from a circle to an ellipse.

[0058] Subsequently, the clamping wheel 35 between the U-shaped seats 32 is inserted. The rubber bladder 37 on the surface of the clamping wheel 35 moves from top to bottom as the clamping wheel 35 rotates and contacts the cable. The top and bottom center of the cable first contact the rubber bladder 37, causing the middle of the rubber bladder 37 to be concave. The dynamic flow of hydraulic oil causes the rubber bladder 37 to expand adaptively on both sides, forming a uniform wrapping compression on the non-compression surface of the cable. This can quickly restore the elliptical deformed cross section to a regular circle and optimize the flatness of the cable surface. In addition, the dynamic flow of hydraulic oil can be used to wrap and compress cables of different sizes. A wire gathering ring 38 is fixedly connected to one side of the fixing frame 31 by an L-shaped rod.

[0059] Example 3: Please refer to Figures 1-8 As shown, the present invention also proposes a stranding method for cable production, comprising the following steps:

[0060] Step 1: Centering and clamping of the wire reel, the process is as follows: The wire reel with a single strand of wire wound on it is placed inside the fixed frame 22. By rotating the screw 29, the corresponding contact plate 27 is moved. Another set of contact plates 27 moves relative to the first set of contact plates through the second set of contact plates, causing the conical clamping platform 28 on the two sets of contact plates 27 to extend into the center hole of the wire reel, thus centering and clamping the wire reel.

[0061] Step 2: The movable clamping of single-strand and multi-strand wires is as follows: The single-strand wire on the unwinding drum passes through the corresponding torsion sleeve 41, fixed sleeve 46 and wire tube 47 in sequence. Then, multiple single-strand wires pass through the wire gathering ring 38 and the two sets of U-shaped seats 32. Rotating the fixed sleeve 46 causes the second inclined surface on the fixed sleeve 46 to abut against the first inclined surface at the end of the multiple second support rods 45. By rotating the fixed sleeve 46, its movement is guided by the second inclined surface to the first inclined surface, causing the multiple second support rods 45 to carry the corresponding adjusting plates 42 to move relative to each other. This causes the multiple clamping wheels 43 in the torsion sleeve 41 to clamp the single-strand wire in the center. Then, rotating the limiting screw causes its end to abut against the corresponding limiting groove. The two sets of electric push rods 33 push the corresponding U-shaped seats 32 to move relative to each other, causing the clamping wheel 34 and clamping wheel 35 in opposite directions to clamp the multi-strand wire.

[0062] Step 3: Apply and control the radial torsional force of a single conductor in real time, and simultaneously wind multiple conductors to make them spirally and tightly twist together. The process is as follows: The external winding equipment pulls the multiple conductors synchronously, and the motor drives the corresponding fixed frame 22 to rotate. The fixed frame 22 carries the fixed unwinding drum and rotates. Through the cross-shaped rotating shaft 1 and rotating shaft 2, the movable frame 26, and the universal sleeve 23, the torsion sleeve 41 and the fixed sleeve 46 rotate. Combined with the clamping wheel 1 34 and clamping wheel 2 35 clamping the other end of the conductor tube 47, and the clamping wheel 43 in the torsion sleeve 41 clamps the single conductor, causing the single conductor in the conductor tube 47 to twist and deflect itself, so that the single conductor itself has a radial torsional deflection force.

[0063] At the same time, the motor drives the rotating frame 21 to carry multiple fixed frames 22 to rotate circumferentially, causing the multi-strand wires to be wound. Combined with the pulling of the multi-strand wires by the external winding equipment and the twisting and deflection force of the single wire itself, the multi-strand wires are caused to spirally and autonomously twist and intertwine with each other.

[0064] During the rotation of the universal sleeve 23 and the torsion sleeve 41, the universal sleeve 23 indirectly rotates by pushing the torsion sleeve 41 through the ear plate 24 against the pressure sensor 25. The pressure sensor 25 monitors the force applied by the universal sleeve 23 to the torsion sleeve 41 in real time and transmits the monitored pressure data to the external controller. The controller presets a pressure range value. If the pressure data is less than the minimum value of the preset pressure range, the controller controls the speed of the second motor to increase. If the pressure data is greater than the maximum value of the preset pressure range, the controller controls the speed of the second motor to decrease. This is to avoid excessive twisting and deflection force of the single wire, which would cause secondary twisting of the twisted cable after the multi-strand wires are twisted, and to avoid insufficient twisting and deflection force, which would cause the multi-strand wires to be twisted and the twisted cable to become loose.

[0065] Step 4: Reshaping the deformed cable cross-section, the process is as follows: The cable formed by twisting multiple strands of conductors is first passed between multiple clamping wheels 34. Multiple anti-slip rubber strips 36 on the surface of the clamping wheels 34 clamp the cable to prevent radial twisting and cause the cable cross-section to deform from a circle to an ellipse. Then it is passed between multiple clamping wheels 35. The rubber bladder 37 on the surface of the clamping wheel 35 moves from top to bottom as the clamping wheel 35 rotates and contacts the cable. The top and bottom center of the cable first contact the rubber bladder 37, causing the middle of the rubber bladder 37 to be concave. The hydraulic oil inside is squeezed to both sides of the rubber bladder 37, causing the sides of the rubber bladder 37 to expand and wrap around the two sides of the cable, continuously squeezing towards the middle of the cable to restore the cable's shape.

[0066] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A stranding device for cable production, comprising a base (1), a feed assembly (2) located on the top of the base (1) and winding a plurality of conductor wires circumferentially, and a conveying assembly (3) clamping and shaping the cable, characterized in that, The feeding assembly (2) includes a rotating frame (21) and multiple fixed frames (22) rotatably mounted on the rotating frame (21). A wire feeding drum is detachably mounted on the fixed frame (22), and a universal sleeve (23) is movably mounted on it. A torsion assembly (4) for radially twisting a single strand of wire is provided inside the universal sleeve (23). The torsion assembly (4) includes a torsion sleeve (41), and multiple adjusting plates (42) are provided inside the torsion sleeve (41). Multiple wire clamping wheels (43) are rotatably mounted at equal intervals on the adjusting plates (42). The universal sleeve (23) is rotatably connected to the torsion sleeve (41), and the torsion sleeve (41) is provided with an installation groove. The universal sleeve (23) is fixedly connected with an ear plate (24) extending into the installation groove. A pressure sensor (25) is fixedly installed between one side of the installation groove and the ear plate (24). The conveying assembly (3) includes a fixed frame (31) fixedly installed on the top of the base (1), and two sets of U-shaped seats (32) arranged in a vertical mirror distribution are provided in the fixed frame (31). An electric push rod (33) is installed on the fixed frame (31) to drive the corresponding U-shaped seat (32) to move up and down. Multiple clamping wheels one (34) and clamping wheels two (35) with I-shaped structure are rotatably installed on the U-shaped seat (32) and on both sides of the electric push rod (33). Multiple anti-slip rubber strips (36) with an arc-shaped structure are fixedly connected to the annular outer wall of the clamping wheel one (34), and multiple rubber bladders (37) with an arc-shaped structure are fixedly connected to the annular outer wall of the clamping wheel two (35). The rubber bladders (37) are filled with hydraulic oil. A wire ring (38) is fixedly connected to one side of the fixing frame (31) by an L-shaped rod.

2. The stranding device for cable production according to claim 1, characterized in that, The fixed frame (22) is rotatably connected to the movable frame (26) via a pivot shaft. The movable frame (26) is rotatably connected to the universal sleeve (23) via a pivot shaft, and the axes of the pivot shaft and the pivot shaft are perpendicular to each other.

3. A stranding device for cable production according to claim 2, characterized in that, The adjusting plate (42) is fixedly connected to a support rod 1 (44) and a support rod 2 (45) that are slidably connected to the torsion sleeve (41). The end of the support rod 2 (45) is provided with an inclined surface 1. The threaded end of the torsion sleeve (41) is threadedly connected to a fixed sleeve (46). The inner annular wall of the fixed sleeve (46) is provided with an inclined surface 2. The annular surface of the clamping wheel (43) is fixedly connected to an anti-slip rubber sleeve.

4. A stranding device for cable production according to claim 3, characterized in that, The torsion sleeve (41) has several limiting grooves on its threaded outer wall. The fixed sleeve (46) is threaded with a limiting screw extending into the corresponding limiting groove. The fixed sleeve (46) is fixedly connected with a wire tube (47) that is compatible with the diameter of the corresponding wire.

5. A stranding device for cable production according to claim 4, characterized in that, The fixed frame (22) is symmetrically provided with abutment plates (27) on both sides, and the opposite sides of the abutment plates (27) are damped and rotatably connected with cone clamps (28). The abutment plates (27) are fixedly connected with guide rods that are slidably connected to the fixed frame (22). The fixed frame (22) is rotatably connected with a first linkage plate, and the end of the first linkage plate is hinged to the corresponding abutment plate (27) with a second linkage plate. The fixed frame (22) is threadedly connected with a screw (29) that is rotatably connected to the corresponding abutment plate (27).

6. A stranding device for cable production according to claim 5, characterized in that, The top of the base (1) is fixedly connected to a fixed plate (11) that is rotatably connected to the rotating frame (21), and a motor that drives the rotating frame (21) to rotate is installed on the fixed plate (11) by bolts. A motor that drives the corresponding fixed frame (22) to rotate is fixedly installed on the rotating frame (21) by bolts.

7. A stranding method for cable production, and a stranding device for cable production according to claim 6, characterized in that, Includes the following steps: S1: Centering and clamping of the wire feeding drum: The wire feeding drum with the wire is installed into the fixed frame (22), and the two conical clamps (28) on both sides extend into the center hole of the wire feeding drum to complete the centering and clamping of the wire feeding drum. S2: Movable clamping of single-strand and multi-strand wires: The single-strand wire passes through the torsion sleeve (41), the fixed sleeve (46) and the wire tube (47) in sequence. Rotating the fixed sleeve (46) drives the clamping wheel (43) to clamp the single-strand wire in the center. The electric push rod (33) pushes the corresponding U-shaped seat (32) to move relative to each other, so that the clamping wheel one (34) and clamping wheel two (35) in opposite directions clamp the multi-strand wire; S3: A single conductor is subjected to radial torsional force and controlled in real time. Multiple conductors are wound synchronously, so that the multiple conductors are spirally and tightly twisted: The winding equipment pulls the cable, and the motor drives the torsion sleeve (41) to rotate, so that the single conductor in the conductor tube (47) twists and deflects itself. The single conductor has radial torsional deflection force; the motor drives multiple fixed frames (22) to rotate circumferentially. The multiple conductors are spirally twisted into a cable under the action of traction force and single conductor torque; the pressure sensor (25) collects the torsional resistance in real time, and the controller dynamically adjusts the speed of the motor according to the value to stabilize the torsional force and prevent the cable from being over-twisted or loosely twisted; S4: The cross-section of the deformed cable is rounded and shaped: The cable is first clamped and limited by clamping wheel one (34) and temporarily compressed into an elliptical cross section. Then it is inserted between clamping wheels two (35). The middle of the rubber bladder (37) on the wheel surface is concave and the hydraulic oil inside is squeezed to both sides of the rubber bladder (37), so that the two sides of the rubber bladder (37) expand and wrap the two sides of the cable, and continuously squeeze towards the middle of the cable to restore the cable shape.

Images