Tubular stranding machine and method for cable processing

Abstract

The invention discloses a tubular stranding machine and method for cable processing, and relates to the technical field of cable processing and manufacturing, the tubular stranding machine comprises a support frame, and further comprises a driving unit, a tubular pay-off unit, a threading and gathering unit, a stranding unit and an adjusting unit which are sequentially mounted on the support frame; the tubular pay-off unit is used for paying off a plurality of strands of copper wires; and the threading gathering unit is used for gathering the multiple strands of copper wires paid off by the tubular pay-off unit. The device has the advantages that when a cable core is wound, the wire outlet speed of the cable core from the stranding machine can be automatically changed according to the inertia braking delay time of the hollow pipe, so that the wire outlet speed and the rotating speed of the hollow pipe are kept constant, the winding number of turns can be ensured to be stable, the situation of insufficient winding is avoided, and the service life of the cable core is prolonged. And meanwhile, the cable core can be straightened with constant pressure when the wire outlet speed is changed, so that the condition of excessive winding is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of cable processing and manufacturing, and in particular to a tubular stranding machine and method for cable processing. Background Art

[0002] A stranding machine is a device required for cable production. It can twist multiple single conductors into one strand to meet the process requirements of the wire. Stranding machines can generally be divided into single stranding machines, pair stranding machines, high-speed stranding machines, back-twisting machines, cage stranding machines, frame stranding machines, tubular stranding machines and disc stranding machines according to the stranding method.

[0003] Among them, the tubular stranding machine is a machine that completes the stranding action by the rotation of a tubular rotating body to produce stranded wire. The existing tubular stranding machine's tube cage is driven by a motor to rotate at high speed, which will cause the wire drum frame connected to the tube cage to swing. Since the wire drum will rotate relative to the wire drum frame to release the single strand of wire on the wire drum, the swing of the wire drum frame will affect the uniformity of the wire drum payout, thereby affecting the quality of the stranded wire. Therefore, the publication number CN119763935A discloses a tubular stranding machine, which includes a tube cage, a wire drum The frame, the wire drum and the driving assembly are provided with a counterweight mechanism on the wire drum frame, and the counterweight mechanism includes a mounting shaft, a connecting plate and a counterweight assembly; the end of the connecting plate is fixedly connected to a sliding rod; the counterweight assembly includes a slide plate, a connecting rod hinged at the end of the sliding rod, a support rod fixedly connected to the connecting rod and located on one side of the wire drum, a counterweight sleeve which is sleeved between two support rods located on the same side of the wire drum and can contact the edge of the wire drum, and a spring is connected between the two support rods; the slide plate is perpendicular to the connecting plate and is inclined with a sliding groove through which the sliding rod can pass.

[0004] The above-mentioned tubular stranding machine can make the center of gravity of the wire drum lower by setting the counterweight mechanism, which is beneficial to reducing the swing of the wire drum frame. The counterweight sleeve can drive the wire drum to move during movement, which is beneficial for the counterweight sleeve to drive the wire drum to the center and improve the uniformity of the wire drum pay-off.

[0005] However, when the above-mentioned stranding machine and the existing stranding machine are used, due to the heavy weight of the pipe cage, high-speed rotation will generate a certain degree of inertia, so a brake device is needed to lock the pipe cage. The brake device cannot stop the pipe cage instantly. At this time, the rotation speed of the pipe cage will gradually decrease, while the wire-winding device continues to wind the wire. This will cause the pipe cage to rotate insufficiently, thereby reducing the number of winding turns and affecting the winding quality. If the wire-winding is stopped first, it will cause too many winding turns, which will also affect the winding quality.

[0006] Therefore, a novel tubular stranding machine for cable processing can be adopted to solve the shortcomings of the prior art. Summary of the Invention

[0007] The purpose of the present invention is to solve the problem in the prior art that the number of winding turns and the take-up speed cannot match each other, resulting in a winding effect different from the standard winding effect, and to propose a tubular stranding machine and method for cable processing.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions: A tubular stranding machine for cable processing comprises a support frame, a driving unit, a tubular pay-off unit, a wire threading and gathering unit, a stranding unit, and an adjusting unit which are sequentially installed on the support frame; The tubular pay-off unit is used to pay out multiple strands of copper wire; The threading and gathering unit is used to gather the multiple strands of copper wires released by the tubular pay-off unit; The driving unit is used to cooperate with the stranding unit through the tubular pay-off unit, the threading and gathering unit, so as to wind the multiple copper wires gathered by the threading and gathering unit to form a cable core; The regulating unit includes a speed regulating component and a buffer component. The buffer component is used to regulate the degree of expansion of the cable core before it enters the speed regulating component. The speed regulating component is used to regulate the outlet speed of the cable core coming out of the stranding unit.

[0009] Preferably, the tubular pay-off unit includes a plurality of support bearings fixedly mounted on a support frame, a hollow tube is rotatably mounted on the plurality of support bearings, a fixed plate is rotatably mounted on the inner rings of the support bearings at both ends, one of the fixed plates is fixedly connected to the support frame, two cross frames are fixedly mounted between the two fixed plates, and a plurality of pay-off rollers are rotatably mounted on the two cross frames.

[0010] Preferably, the driving unit includes a driving motor fixedly mounted on a support frame, and a driving end of the driving motor is connected to the hollow tube via a gear set.

[0011] Preferably, the threading and gathering unit includes a bracket 1 fixedly mounted on a support frame, a conical threading head is rotatably mounted on the bracket 1, a plurality of circular holes are opened on the conical threading head, and a plurality of guide rollers and a plurality of limiting roller groups are rotatably mounted on the conical threading head.

[0012] Preferably, the stranding machine unit includes a bracket four fixedly mounted on the support frame, a wire drawing machine fixedly mounted on the bracket four, and a locking roller group and a second support roller mounted on the bracket four.

[0013] Preferably, the buffer assembly includes a bracket three fixedly mounted on the support frame, two first support rollers are rotatably mounted on the bracket three, and a first cylinder body is fixedly mounted on the bracket three, a first sliding rod is slidably mounted on the first cylinder body, a first spring is fixedly mounted between the first sliding rod and the first cylinder body, a frame is fixedly mounted on the first sliding rod, a buffer control roller is rotatably mounted on the frame, and the buffer control roller is located between the two first support rollers.

[0014] Preferably, the speed adjustment assembly includes a cylinder fixedly mounted on the bracket three, the cylinder being provided with a wire inlet hole and a wire outlet hole, a motor being fixedly mounted on the outside of the cylinder, a conical rubber cylinder being rotatably mounted inside the cylinder, the conical rubber cylinder being fixedly connected to the motor drive end, and the cable core being wound around the conical rubber cylinder in one circle; An electric push rod is fixedly installed inside the cylinder, and a moving frame is fixedly installed at the telescopic end of the electric push rod. The moving frame slides in the wire entry hole, and the cable core passes through the moving frame. An elastic force adjustment mechanism is installed between the electric push rod and the first cylinder body.

[0015] Preferably, the elastic force adjustment mechanism includes a first wedge block fixedly mounted on the telescopic end of the electric push rod, a second cylinder body fixedly mounted on the bracket three, a second sliding rod slidably mounted in the second cylinder body, a second spring fixedly mounted between the second sliding rod and the second cylinder body, a second wedge block matching the first wedge block fixedly mounted on the second sliding rod, and the first cylinder body and the second cylinder body are connected through an air pipe.

[0016] Preferably, it also includes a straightening unit arranged on the side of the adjusting unit away from the stranding unit, the straightening unit includes a bracket 2 fixedly mounted on the support frame, a straightening roller group is rotatably mounted on the bracket 2, and a steering roller group is rotatably mounted on the bracket 2.

[0017] The present invention also provides a method for stranding a wire using a tubular stranding machine for cable processing, comprising the above tubular stranding machine for cable processing, and further comprising the following steps: S1. The copper wires released from the tubular pay-off unit are pulled into the stranding unit through the threading and gathering unit. The driving unit strands the copper wires through the tubular pay-off unit, the threading and gathering unit and the stranding unit, so that multiple copper wires are wound into one strand to form a cable core. S2. The wound cable core passes through the buffer assembly of the regulating unit and enters the speed regulating assembly. When the tubular pay-off unit is stopped, the speed regulating assembly is activated to reduce the outlet speed of the cable core coming out of the stranding unit. At the same time, the buffer assembly is used to straighten the cable core in this section at a constant pressure. S3. The cable core coming out of the speed regulating assembly is straightened by a straightening unit to make the cable core straight; S4. The straightened cable core passes through the tension control unit and then is taken up by the take-up unit.

[0018] Compared with the existing technology, the advantages of the present invention are: 1. When making cable cores, this tubular stranding machine drives the cable core to move by setting an electric push rod and a moving frame, changing the cable core's line-in position on the conical rubber cylinder, thereby reducing the cable core's outlet speed from the stranding machine. As the brake is applied, the rotation speed of the hollow tube and the conical threading head slows down, so the outlet speed is reduced to adapt to the rotation speed of the conical threading head, ensuring that the rotation speed is synchronized with the outlet speed. This ensures that the number of winding turns remains unchanged, making the cable core more evenly wound.

[0019] 2. When the tubular stranding machine is producing the cable core, by providing the first cylinder, the first sliding rod and the first spring, the cable core is automatically tightened while the cable core is coming out of the stranding machine at a reduced speed, thereby avoiding the situation in which the cable core in the stranding machine suddenly loses tension and causes excessive winding of the cable core, thereby effectively improving the winding quality of the cable core.

[0020] 3. When the tubular stranding machine is producing cable cores, the cable cores can be straightened at a constant pressure by using the second cylinder, the second sliding rod, the second spring and the air guide tube. This avoids the situation where the tensioning operation stability is reduced due to pressure reduction. At the same time, the constant pressure can effectively reduce the probability of vibration of the buffer control roller, making the cable core more stably tightened.

[0021] To sum up, when the present invention is winding the cable core, it can automatically change the cable core's outlet speed from the stranding machine according to the delay time of the hollow tube's inertia braking, so that the outlet speed and the hollow tube rotation speed remain constant, thereby ensuring the stability of the number of winding turns and avoiding the occurrence of insufficient winding. At the same time, the cable core can be straightened with a constant pressure when the outlet speed changes to avoid the occurrence of excessive winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is a schematic structural diagram of a tubular stranding machine for cable processing proposed by the present invention; Figure 2 for Figure 1 Detailed schematic diagram of the enlarged structure of the middle tube pay-off unit and the driving unit; Figure 3 for Figure 1 A detailed schematic diagram of the enlarged structure after removing the tubular pay-off unit and the driving unit; Figure 4 for Figure 3Enlarged structural schematic detail diagram of the center threading and gathering unit; Figure 5 for Figure 3 The enlarged structural schematic detail diagram after removing the threading and gathering unit; Figure 6 for Figure 5 Detailed schematic diagram of the structure after rotation at a certain angle; Figure 7 for Figure 6 Detailed schematic diagram of the enlarged structure of the middle regulating unit; Figure 8 for Figure 7 Detailed diagram of the structure after removing the cylinder and bracket and rotating them at a certain angle; Figure 9 for Figure 8 Detailed diagram of the structure after removing the motor, conical rubber cylinder and moving frame and rotating them to a certain angle; Figure 10 for Figure 9 A schematic detailed diagram of the planar structure of the first cylinder body and the second cylinder body along one of the angles; Figure 11 for Figure 10 Detailed schematic diagram of the three-dimensional structure along the AA section; Figure 12 for Figure 7 Detailed schematic diagram of the internal structure of the middle cylinder and the enlarged structure of the motor; Figure 13 for Figure 5 Enlarged structural schematic detail diagram of the stranding unit.

[0023] In the figure: 1 tubular pay-off unit, 2 driving unit, 3 threading and gathering unit, 4 stranding unit, 5 adjusting unit, 6 straightening unit, 7 tension control unit, 8 take-up unit, 9 support frame, 10 hollow tube, 11 support bearing, 12 cross frame, 13 pay-off roller, 14 driving motor, 15 gear set, 16 bracket 1, 17 conical threading head, 18 guide roller, 19 limit roller group, 20 straightening roller group, 21 bracket 2, 22 steering roller group, 23 Bracket three, 24 buffer assembly, 25 cable core, 26 cylinder, 27 motor, 28 conical rubber cylinder, 29 electric push rod, 30 first support roller, 31 buffer control roller, 32 moving frame, 33 first wedge block, 34 second wedge block, 35 first cylinder, 36 second cylinder, 37 first sliding rod, 38 second sliding rod, 39 first spring, 40 second spring, 41 bracket four, 42 wire take-up machine, 43 locking roller group, 44 second support roller. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0025] Example 1: Reference Figures 1-6 、 Figure 13 A tubular stranding machine for cable processing includes a support frame 9, a driving unit 2, a tubular pay-off unit 1, a threading and gathering unit 3, a stranding unit 4, an adjusting unit 5, a straightening unit 6, a tension control unit 7, and a take-up unit 8, which are sequentially installed on the support frame 9; A driving unit 2 is installed on the support frame 9 for driving the tubular pay-off unit 1 to operate. An adjusting unit 5 is installed between the stranding unit 4 and the tension control unit 7 for adjusting the outlet speed of the cable core 25 coming out of the stranding unit 4 after winding. A straightening unit 6 is installed between the adjusting unit 5 and the tension control unit 7 for straightening the wound cable core 25 to ensure that the cable core 25 enters the tension control unit 7 straightly. The tubular pay-off unit 1 includes a plurality of support bearings 11 fixedly mounted on a support frame 9, a hollow tube 10 is rotatably mounted on the plurality of support bearings 11, and a fixed plate is rotatably mounted on the inner ring of the support bearings 11 at both ends. The fixed plate is a disc-shaped structure, one side of one fixed plate is fixedly connected to the support frame 9, and two cross frames 12 are fixedly mounted between the two fixed plates. The extension direction of the cross frame 12 is parallel to the extension direction of the hollow tube 10, and a plurality of pay-off rollers 13 are rotatably mounted on the two cross frames 12. The length direction of the pay-off roller 13 is perpendicular to the length direction of the hollow tube 10, and each pay-off roller 13 is wound with copper wire; The driving unit 2 includes a driving motor 14 fixedly mounted on the support frame 9, and the driving end of the driving motor 14 is connected to the hollow tube 10 through a gear set 15; The gear set 15 consists of a gear and a gear ring. The gear ring is fixedly connected to the hollow tube 10. The gear is fixedly connected to the driving end of the driving motor 14. The driving end of the driving motor 14 rotates to drive the gear fixedly connected to it to rotate. The gear drives the gear ring to rotate, and the gear ring drives the hollow tube 10 to rotate.

[0026] The threading and gathering unit 3 includes a bracket 16 fixedly mounted on the support frame 9, and a conical threading head 17 is rotatably mounted on the bracket 16. The large end of the conical threading head 17 is relatively close to the tubular pay-off unit 1 and is fixedly connected to the hollow tube 10, and the small end is relatively far away from the tubular pay-off unit 1. A plurality of circular holes are opened on the conical threading head 17 along its circumference, and a plurality of guide rollers 18 and a plurality of limiting roller groups 19 are rotatably mounted on the conical threading head 17. The guide rollers 18 and the circular holes are arranged in a one-to-one correspondence, and the number of the limiting roller groups 19 is consistent with the number of the guide rollers 18 and the circular holes. The limiting roller group 19 is arranged at a position relatively close to the small end of the conical threading head 17, and the guide rollers 18 and the circular holes are arranged relatively close to the large end of the conical threading head 17; Each limiting roller group 19 includes two upper and lower rotating rollers, wherein the position of the upper rotating roller can be adjusted, so the distance between the two rotating rollers can be adjusted, which is used to limit copper wires of different diameters. A groove is provided in the middle of the two rotating rollers to prevent slipping.

[0027] When in use, each copper wire is passed through the round hole on the conical threading head 17, then through the corresponding guide roller 18, and then through the limiting roller group 19. At this time, the copper wire between the guide roller 18 and the limiting roller group 19 is parallel to the inclined surface of the conical threading head 17, and then is pulled from the limiting roller group 19 to the stranding machine group 4.

[0028] The stranding unit 4 includes a bracket 41 fixedly mounted on the support frame 9, a wire drawing machine 42 is fixedly mounted on the bracket 41, and a locking roller set 43 and a second support roller 44 are also mounted on the bracket 41; The multiple copper wires pulled onto the stranding unit 4 enter the winding machine 42 for winding and winding, so that the multiple copper wires are wound into a cable core 25. The wound cable core 25 passes through the locking roller set 43 and the second support roller 44. The locking roller assembly 43 is located at the exit of the wire-winding machine 42 and primarily serves as a guide. The second support roller 44 is located on the side of the locking roller assembly 43 away from the wire-winding machine 42 and primarily serves as a tensioner. The locking roller assembly 43 comprises two vertical rollers and a horizontal roller. The horizontal roller is located below the two vertical rollers. The cable core 25 exiting the wire-winding machine 42 passes between the two vertical rollers and rests on the horizontal roller before passing through the bottom of the second support roller 44. This ensures that the cable core 25 exiting the wire-winding machine 42 does not come into contact with the exit of the wire-winding machine 42, effectively preventing scratches on the cable core 25 caused by friction.

[0029] The wire twisting machine 42 is a conventional technology, and its function is to twist a plurality of scattered copper wires into a cable core 25 .

[0030] The straightening unit 6 includes a second bracket 21 fixedly mounted on the support frame 9, a straightening roller group 20 is rotatably mounted on the second bracket 21, and a steering roller group 22 is rotatably mounted on the second bracket 21; The steering roller group 22 is located on the side of the bracket 2 21 relatively close to the adjustment unit 5. It includes two parallel steering rollers. The steering rollers extend in the vertical direction and are distributed in the horizontal direction. Its main function is to change the direction of the cable core 25 and ensure that the cable core 25 is vertically inserted into the straightening roller group 20. The straightening roller assembly 20 includes two parallel pressure rollers extending horizontally. The upper pressure roller is capable of elastically moving up and down, pressing and straightening the cable core 25 between the two rollers. The upper pressure roller is installed with a gap between the mounting plates on either side to enable its elastic upward and downward movement.

[0031] The cable core 25 coming out of the winding machine 42 will enter the regulating unit 5, then pass through the steering roller group 22 and enter the straightening roller group 20. After being straightened by the straightening roller group 20, it enters the tension control unit 7 and finally enters the take-up unit 8 for take-up. The tension control unit 7 is an existing tension control device, mainly including tension rollers arranged in front and back, with grooves formed on the tension rollers, and the cable core 25 is wound around the tension rollers. Its specific structure and specific operating principle are not shown in detail here. It can automatically change the tension of the cable core 25 according to the take-up speed to ensure that the take-up tension of the cable core 25 is uniform; The take-up unit 8 is also a commonly used device. It drives the take-up roller to rotate by a motor to wind the cable core 25 onto the take-up roller. The details will not be elaborated here.

[0032] Example 2: This example differs from the example 1 in that: Figure 3 、 Figure 5-12 , the regulating unit 5 is composed of a speed regulating component and a buffer component 24, and the buffer component 24 is used to adjust the degree of relaxation of the cable core 25 before entering the speed regulating component; The speed regulating assembly is used to regulate the outlet speed of the cable core 25 coming out of the stranding unit 4; From the moment the hollow tube 10 starts to brake, the rotation speed of the hollow tube 10 will gradually decrease. Since the take-up speed is fixed, the cable core 25 out of the wire-winding machine 42 has the same speed as the take-up speed. According to the control variable method, the rotation speed is reduced and the moving speed remains unchanged, so the number of winding circles of the copper wire in the wire-winding machine 42 is insufficient. Therefore, it is necessary to adjust the moving speed of the cable core 25, that is, the speed of the cable core 25 out of the wire-winding machine 42.

[0033] The speed adjustment assembly includes a cylinder 26 fixedly mounted on the bracket three 23, with a wire inlet hole and a wire outlet hole formed on the cylinder 26. A motor 27 is fixedly mounted on the outside of the cylinder 26, and a conical rubber cylinder 28 is rotatably mounted inside the cylinder 26. The conical rubber cylinder 28 is fixedly connected to the driving end of the motor 27. After the cable core 25 enters the cylinder 26 through the wire inlet hole, it is wound around the conical rubber cylinder 28. An electric push rod 29 is fixedly mounted inside the cylinder 26. The telescopic direction of the electric push rod 29 is parallel to the axial direction of the conical rubber cylinder 28. A moving frame 32 is fixedly mounted on the telescopic end of the electric push rod 29. The moving frame 32 is slidably mounted at the wire inlet hole, and the cable core 25 passes through the moving frame 32. During the stranding process, the motor 27 is kept in operation. While winding the wire, the motor 27 drives the conical rubber cylinder 28 to rotate, keeping the speed of the cable core 25 coming out of the cylinder 26 consistent with the winding speed. As the rotation speed of the hollow tube 10 gradually slows down, the electric push rod 29 is started at this time. The electric push rod 29 will drive the moving frame 32 to move. The movement of the moving frame 32 drives the cable core 25 that has not entered the cylinder 26 to move, thereby changing the position of the cable core 25 on the conical rubber cylinder 28; The rotation speed of the conical rubber cylinder 28 remains unchanged, and the position of the cable core 25 changes, which means that the linear speed of the cable core 25 before entering the cylinder 26 changes (here the cable core 25 moves to the side where the diameter of the conical rubber cylinder 28 is reduced, and the linear speed of the cable core 25 decreases). The moving speed of the cable core 25 before entering the cylinder 26 is consistent with the speed of the cable core 25 coming out of the wire winding machine 42, so the outlet speed of the cable core 25 coming out of the wire winding machine 42 is reduced, so that the change in the outlet speed and the change in the rotation speed of the hollow tube 10 maintain a constant relationship, which can ensure the consistency of the number of winding turns.

[0034] The purpose of the conical rubber tube 28 being made of rubber material is to increase the friction between the cable core 25 and reduce the probability of slipping; A plurality of balls are rollingly mounted on the inner side of the moving frame 32 , which can effectively reduce the friction between the moving frame 32 and the cable core 25 , and reduce the probability of scratches on the surface of the cable core 25 .

[0035] The buffer assembly 24 is disposed on the side of the cylinder 26 relatively close to the stranding unit 4. It includes a bracket 3 23 fixedly mounted on the support frame 9. Two first support rollers 30 are rotatably mounted on the bracket 3 23, which are parallel to each other and have the same height. The extension direction of the first support rollers 30 is parallel to the central axis of the cylinder 26. A first cylinder 35 is fixedly mounted on the bracket 3 23. A first sliding rod 37 is slidably mounted on the first cylinder 35. A first spring 39 is fixedly mounted between the first sliding rod 37 and the first cylinder 35. A frame is fixedly mounted on the first sliding rod 37. A buffer control roller 31 is rotatably mounted on the frame. The buffer control roller 31 is located between the two first support rollers 30 and is arranged parallel to the first support rollers 30. The cable core 25 is wound from the bottom of the first first support roller 30 to the top of the buffer control roller 31, then wound to the bottom of the second first support roller 30, and then passes through the movable frame 32 from the wire feed hole.

[0036] As the moving speed of the cable core 25 between the wire-winding machine 42 and the cylinder 26 gradually slows down, the cable core 25 moves on the conical rubber cylinder 28 toward the end where the diameter gradually decreases. As the cable core 25 moves on the conical rubber cylinder 28, the cable core 25 will show a sudden change in tension, resulting in intermittent tension in the conical rubber cylinder 28, which will affect the wire output tension of the wire-winding machine 42 and form a pulse tension. At this time, the first sliding rod 37 is pushed to move by the first spring 39, so that the buffer control roller 31 cooperates with the two first support rollers 30. When the tension suddenly changes, the cable core 25 coming out of the wire-winding machine 42 is automatically driven to move to compensate for the sudden change in tension and make the tension of the cable core 25 coming out of the wire-winding machine 42 constant.

[0037] An elastic force adjustment mechanism is installed between the electric push rod 29 and the first cylinder 35; the elastic force adjustment mechanism includes a first wedge 33 fixedly installed at the telescopic end of the electric push rod 29, a second cylinder 36 fixedly installed on the bracket 3 23, a second sliding rod 38 slidably installed in the second cylinder 36, a second spring 40 fixedly installed between the second sliding rod 38 and the second cylinder 36, a second wedge 34 that cooperates with the first wedge 33 fixedly installed on the second sliding rod 38, and the first cylinder 35 and the second cylinder 36 are connected through an air pipe; Since the elastic force of the first spring 39 gradually decreases as the first sliding rod 37 rises, elastic fatigue and elastic response delay will occur, and pulse tension will still occur; Therefore, as the electric push rod 29 gradually moves, it will drive the first wedge block 33 to move. Under the pressure of the first wedge block 33, it will drive the second wedge block 34 to move axially along the second cylinder body 36. The movement of the second wedge block 34 drives the second sliding rod 38 to move into the second cylinder body 36, and squeezes the gas inside the second cylinder body 36 into the first cylinder body 35 through the air pipe. As the air in the first cylinder body 35 increases, the elastic force of the first spring 39, which gradually reduces the elastic force, will be compensated, so that the first sliding rod 37 can move upward at a constant pressure, thereby avoiding the occurrence of pulse tension.

[0038] This embodiment also provides a method for using a tubular stranding machine for cable processing, comprising the following steps: S1. The copper wires released from the tubular pay-off unit 1 are pulled into the stranding unit 4 through the threading and gathering unit 3. The driving unit 2 strands the copper wires through the tubular pay-off unit 1, the threading and gathering unit 3 and the stranding unit 4, so that multiple strands of copper wire are twisted into one strand to form the cable core 25. S2. The wound cable core 25 passes through the buffer assembly 24 of the regulating unit 5 and enters the speed regulating assembly. When the tubular pay-off unit 1 is stopped, the speed regulating assembly is activated to reduce the outlet speed of the cable core 25 coming out of the stranding unit 4. At the same time, the buffer assembly 24 is used to straighten the cable core 25 in this section under constant pressure. S3, the cable core 25 coming out of the speed regulating assembly is straightened by the straightening unit 6 to make the cable core 25 straight; S4. The straightened cable core 25 passes through the tension control unit 7 and then the take-up unit 8 for take-up.

[0039] First, the copper wire rolls needed to make the cable core 25 are placed in the tubular pay-off unit 1. Subsequently, the copper wires on each copper wire roll are pulled into the threading and gathering unit 3. Then, all the copper wires are threaded into the stranding unit 4. Then, the driving unit 2 drives the hollow tube 10 of the tubular pay-off unit 1 to rotate. The rotation of the hollow tube 10 drives the conical threading head 17 of the threading and gathering unit 3 to rotate, thereby stranding the wires in the gathering machine 42 of the stranding unit 4, so that multiple copper wires are wound into one strand to form the cable core 25. The wound cable core 25 passes through the buffer assembly 24 of the regulating unit 5 and then enters the speed regulating assembly. When the tubular pay-off unit 1 is stopped, the tubular pay-off unit 1 will gradually decelerate due to inertia, rather than stopping instantly. Since the take-up speed of the take-up unit 8 is constant, there will be a situation where the number of copper wire windings is insufficient at the beginning of the brake. At this time, the electric push rod 29 is started, and the electric push rod 29 drives the moving frame 32 to move. The movement of the moving frame 32 drives the cable core 25 that has not entered the cylinder 26 to move, thereby changing the position of the cable core 25 on the conical rubber cylinder 28; The rotation speed of the conical rubber cylinder 28 remains unchanged, but the position of the cable core 25 changes, which means that the linear speed of the cable core 25 before entering the cylinder 26 changes (here, the cable core 25 moves toward the side where the diameter of the conical rubber cylinder 28 is reduced, and the linear speed of the cable core 25 decreases). The moving speed of the cable core 25 before entering the cylinder 26 is consistent with the speed of the cable core 25 coming out of the wire-winding machine 42. Therefore, the speed of the cable core 25 coming out of the wire-winding machine 42 is reduced, so that the change in the speed of the wire-winding and the change in the rotation speed of the hollow tube 10 maintain a constant relationship, which can ensure the consistency of the number of winding turns. As the output speed slows down, the cable core 25 between the stranding unit 4 and the speed regulating assembly becomes loose as the speed slows down. At this time, the buffer assembly 24 is used to straighten the cable core 25 in this section with constant pressure. After the cable core 25 comes out of the speed regulating assembly, it enters the straightening unit 6 to straighten the cable core 25 so that the cable core 25 is straight; The straightened cable core 25 will enter the tension control unit 7, and then the cable core 25 will be taken up by the take-up unit 8. The tension control unit 7 is used to control the tension of the cable core 25 during the take-up process, and automatically adjust the tension according to the number of turns wound in the take-up unit 8.

[0040] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A tubular stranding machine for cable processing, comprising a support frame (9), characterized in that: It also includes a driving unit (2), a tubular pay-off unit (1), a threading and gathering unit (3), a stranding unit (4), and an adjusting unit (5) which are sequentially mounted on a support frame (9); The tubular pay-off unit (1) is used for paying out multiple strands of copper wire; The threading and gathering unit (3) is used to gather the multiple strands of copper wire released by the tubular pay-off unit (1); The driving unit (2) is used to cooperate with the stranding unit (4) through the tubular pay-off unit (1), the threading and gathering unit (3), so that the multiple copper wires gathered by the threading and gathering unit (3) are wound to form a cable core (25); The regulating unit (5) comprises a speed regulating component and a buffer component (24), wherein the buffer component (24) is used to regulate the degree of expansion of the cable core (25) before it enters the speed regulating component, and the speed regulating component is used to regulate the outlet speed of the cable core (25) coming out of the stranding unit (4).

2. The tubular stranding machine for cable processing according to claim 1, characterized in that: The tubular pay-off machine unit (1) comprises a plurality of support bearings (11) fixedly mounted on a support frame (9), a hollow tube (10) being rotatably mounted on the plurality of support bearings (11), a fixed plate being rotatably mounted on the inner rings of the support bearings (11) at both ends, one of the fixed plates being fixedly connected to the support frame (9), two cross frames (12) being fixedly mounted between the two fixed plates, and a plurality of pay-off rollers (13) being rotatably mounted on the two cross frames (12).

3. The tubular stranding machine for cable processing according to claim 2, characterized in that: The driving unit (2) includes a driving motor (14) fixedly mounted on a support frame (9), and a driving end of the driving motor (14) is connected to the hollow tube (10) via a gear set (15).

4. The tubular stranding machine for cable processing according to claim 1, characterized in that: The threading and gathering unit (3) comprises a bracket (16) fixedly mounted on a support frame (9), a conical threading head (17) being rotatably mounted on the bracket (16), a plurality of circular holes being provided on the conical threading head (17), and a plurality of guide rollers (18) and a plurality of limiting roller groups (19) being rotatably mounted on the conical threading head (17).

5. The tubular stranding machine for cable processing according to claim 1, characterized in that: The stranding machine unit (4) comprises a bracket four (41) fixedly mounted on a support frame (9), a wire drawing machine (42) fixedly mounted on the bracket four (41), and a locking roller group (43) and a second support roller (44) mounted on the bracket four (41).

6. The tubular stranding machine for cable processing according to claim 1, characterized in that: The buffer assembly (24) includes a bracket three (23) fixedly mounted on a support frame (9), two first support rollers (30) being rotatably mounted on the bracket three (23), and a first cylinder (35) being fixedly mounted on the bracket three (23), a first sliding rod (37) being slidably mounted on the first cylinder (35), a first spring (39) being fixedly mounted between the first sliding rod (37) and the first cylinder (35), a frame being fixedly mounted on the first sliding rod (37), a buffer control roller (31) being rotatably mounted on the frame, and the buffer control roller (31) being located between the two first support rollers (30).

7. A tubular stranding machine for cable processing according to claim 6, characterized in that: The speed adjustment assembly includes a cylinder (26) fixedly mounted on the bracket three (23), the cylinder (26) is provided with a wire inlet hole and a wire outlet hole, a motor (27) is fixedly mounted on the outside of the cylinder (26), a conical rubber cylinder (28) is rotatably mounted inside the cylinder (26), the conical rubber cylinder (28) is fixedly connected to the driving end of the motor (27), and the cable core (25) is wound around the conical rubber cylinder (28) for one circle; An electric push rod (29) is fixedly installed inside the cylinder (26), and a moving frame (32) is fixedly installed at the telescopic end of the electric push rod (29). The moving frame (32) slides in the wire entry hole, and the cable core (25) passes through the moving frame (32). An elastic force adjustment mechanism is installed between the electric push rod (29) and the first cylinder (35).

8. The tubular stranding machine for cable processing according to claim 7, characterized in that: The elastic force adjustment mechanism includes a first wedge (33) fixedly mounted on the telescopic end of the electric push rod (29), a second cylinder (36) fixedly mounted on the bracket three (23), a second sliding rod (38) slidably mounted in the second cylinder (36), a second spring (40) fixedly mounted between the second sliding rod (38) and the second cylinder (36), a second wedge (34) matched with the first wedge (33) fixedly mounted on the second sliding rod (38), and the first cylinder (35) and the second cylinder (36) are connected through an air pipe.

9. The tubular stranding machine for cable processing according to claim 1, characterized in that: The invention also includes a straightening unit (6) arranged on a side of the regulating unit (5) away from the stranding unit (4), the straightening unit (6) including a second bracket (21) fixedly mounted on the support frame (9), a straightening roller group (20) rotatably mounted on the second bracket (21), and a steering roller group (22) rotatably mounted on the second bracket (21).

10. A method for stranding a cable using a tubular stranding machine, the method being used for the tubular stranding machine according to any one of claims 1 to 9, wherein: The following steps are involved: S1, the copper wires released from the tubular pay-off unit (1) are pulled into the stranding unit (4) through the threading and gathering unit (3), and the driving unit (2) is used to strand the copper wires through the tubular pay-off unit (1), the threading and gathering unit (3) and the stranding unit (4), so that multiple strands of copper wires are wound into one strand to form a cable core (25); S2, the wound cable core (25) passes through the buffer assembly (24) of the regulating unit (5) and enters the speed regulating assembly. When the tubular pay-off unit (1) is stopped, the speed regulating assembly is started to reduce the outlet speed of the cable core (25) coming out of the stranding unit (4). At the same time, the buffer assembly (24) is used to straighten the cable core (25) in the section at a constant pressure. S3, the cable core (25) coming out of the speed regulating assembly is straightened by the straightening unit (6) to make the cable core (25) straight; S4. The straightened cable core (25) passes through the tension control unit (7) and is then taken up by the take-up unit (8).

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