A wire feeding device for a tubular twisting machine

Abstract

This invention belongs to the technical field of metal wire twisting equipment and discloses a wire feeding device for a tubular twisting machine, including a support frame, a working plate, a wire spool mounting assembly, a wire spool assembly, an adaptive wire feeding mechanism, a first guide wire mechanism, an auxiliary wire feeding post, a second guide wire mechanism, a drive mechanism, and a stop mechanism. By adopting the technical solution of this invention, a graded wire guiding structure is formed by setting up an adaptive wire feeding mechanism, an auxiliary wire feeding post, and two sets of guide wire mechanisms. Combined with the drive mechanism driving the swing arm type guide wire mechanism to adaptively deflect, it can match the working condition of the gradually decreasing outer diameter of the wire spool and adapt to the dynamic changes in the wire feeding angle in real time. Combined with a spring buffer structure to absorb tension fluctuations, it can reduce the occurrence of wire loosening, skipping, and tangling faults, which is beneficial to maintaining stable tension during the feeding process, improving the twist pitch uniformity of the twisted strands, and ensuring the quality of the finished twisted product.

Description

Technical Field

[0001] This invention belongs to the technical field of metal wire twisting equipment, specifically relating to a wire feeding device for a tubular twisting machine. Background Technology

[0002] Tubular twisting machines are the core twisting equipment in the production process of electric vehicle brake lines. The wire feeding device, as the front-end feeding unit of the tubular twisting machine, is used to carry the wire reel and continuously supply metal wire to the twisting machine. The stability of its wire feeding tension and the continuity of its feeding directly determine the finished product quality and production efficiency of the twisted wire. At present, the wire feeding devices of conventional tubular twisting machines in the industry mostly adopt a flat wire feeding reel structure, which relies on the main machine to drive the reel to rotate passively to complete the wire feeding. The overall structure is relatively simple, and the supporting design of wire guiding and tension control is relatively lacking.

[0003] In actual production operations, as the wire feeding process progresses, the metal wire on the reel is continuously output, and the outer diameter of the coil gradually decreases. Wire feeding devices lacking an adaptive conductor mechanism cannot match the dynamic changes in the wire feeding angle, easily causing problems such as loose wire and large tension fluctuations, which in turn lead to faults such as skipped wires and tangled wires, reducing the uniformity of the twist pitch of the twisted strands. At the same time, conventional wire feeding devices are mostly single-reel load-bearing structures, with limited continuous feeding time for a single batch, resulting in frequent reel changes and downtime during production, which is not conducive to improving production efficiency. In addition, the rotation damping of existing wire feeding devices is mostly a fixed structure, making friction preload adjustment inconvenient and difficult to flexibly adapt to wire feeding conditions of different diameters and materials, resulting in poor equipment versatility. Summary of the Invention

[0004] In view of the problems mentioned in the background art, the purpose of the present invention is to provide a yarn feeding device for a tubular twisting machine, which solves the problems mentioned in the background art.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows: A wire feeding device for a tubular stranding machine includes a support frame. A working plate is mounted on the top of the support frame. A wire reel mounting assembly is rotatably mounted on the center of the top surface of the working plate. Two sets of wire reel assemblies are sleeved on the wire reel mounting assembly. An adaptive wire guiding mechanism and a first wire guiding mechanism are respectively provided on the lower left and lower right ends of the top surface of the working plate. An auxiliary wire guiding post is provided between the adaptive wire guiding mechanism and the first wire guiding mechanism. The auxiliary wire guiding post is also mounted on the top of the working plate. A second wire guiding mechanism is provided on the upper right end of the top surface of the working plate. A driving mechanism is hinged to one end of the second wire guiding mechanism. The driving mechanism is also fixed to the top of the working plate. A stop mechanism is fixedly mounted on one side of the adaptive wire guiding mechanism. The other end of the stop mechanism is fixed to the top of the working plate. Metal wire is wound on the wire reel assembly. The metal wire is led outward sequentially through the auxiliary wire guiding post, the adaptive wire guiding mechanism, the first wire guiding mechanism, and the second wire guiding mechanism.

[0006] Preferably, the adaptive wire guiding mechanism includes a support rod, a first pin, and a spring; a square groove is formed in the middle of one side of the support rod, and a fixing bolt is threaded onto the top of the support rod corresponding to the square groove; the body of the support rod is hinged to the top of the working plate through the first pin, and a wire guiding tube is fixedly provided at the top of the support rod; a hook plate is fixedly provided at one end of the support rod, and a locking seat is fixedly provided on the top surface of the working plate; an adjusting shaft is threaded into the internal part of the locking seat; one end of the spring is hooked and connected to the hook plate, and the other end is hooked and connected to one end of the adjusting shaft; this scheme forms an elastic adaptive structure by connecting the hinged support rod and the spring, which can buffer the instantaneous tension fluctuations during the wire feeding process, and at the same time, the spring preload can be flexibly adjusted by the adjusting shaft to adapt to the wire feeding needs of different wire diameters and materials.

[0007] Preferably, the support frame includes a base plate and columns. Several columns are vertically fixed on the top surface of the base plate, and the top of the columns is fixedly connected to the bottom surface of the work plate. This solution adopts a support structure of base plate and multiple columns, which can provide a stable bearing foundation for the top work plate and various functional components, while raising the working height and facilitating the disassembly and assembly of the reel and daily maintenance operations.

[0008] Preferably, the spool mounting assembly includes a rotating base; the rotating base is rotatably mounted on the top surface of the work plate, and a main shaft is vertically fixed at the center of the top surface of the rotating base, with a threaded hole on the top surface of the main shaft; a friction rubber belt is circumferentially arranged on the outer side of the rotating base, and the outer side of the friction rubber belt contacts the end of the stop mechanism; this scheme allows the rotating base to support the main shaft and the spool to rotate synchronously, and the friction rubber belt on the outer side can cooperate with the stop mechanism to form friction damping, which can provide stable basic resistance for the rotation of the spool and prevent the spool from loosening and skipping wires due to excessive speed of wire release caused by rotational inertia.

[0009] Preferably, the wire reel assembly includes a wire reel body and screws; the wire reel body has mounting grooves at both ends inside, and a fixing plate is provided inside the mounting groove; the wire reel body is fixedly installed on the outside of the spindle by the fixing plate; a washer is provided at the top of the spindle, and the screw passes through the washer and is threaded into the threaded hole at the top of the spindle; this solution positions and installs the wire reel body on the spindle by the fixing plate, and achieves axial limiting with the top washer and locking screw, which can ensure the coaxiality of the wire reel and the spindle, reduce tension fluctuations caused by rotational eccentricity, and facilitate the assembly and disassembly of the wire reel.

[0010] Preferably, the second conductor mechanism includes a swing arm, a second pin, a limiting shaft, a mounting shaft, a guide wheel, a bearing, a first bolt, a connecting shaft, and a limiting groove. The top surface of the working plate has a limiting groove. The bottom end of the swing arm is hinged to the top surface of the working plate via the second pin. The limiting shaft is fixedly mounted on the swing arm and extends into the limiting groove. The top end of the swing arm is fixedly mounted on the mounting shaft. A bearing is installed inside the guide wheel, and the guide wheel is sleeved on the outside of the mounting shaft via the bearing. The first bolt is threaded to the top end of the mounting shaft. One end of the swing arm is fixedly mounted on the connecting shaft, which is hinged to the power output end of the drive mechanism. This design uses a hinged swing arm structure, which can drive the guide wheel to swing and adjust the wire exit angle. The limiting groove and limiting shaft limit the swing stroke, preventing the swing arm from overtraveling and damaging components. The built-in bearing in the guide wheel reduces wire friction resistance.

[0011] Preferably, the driving mechanism includes a cylinder, a hinge joint, a hinge plate, a hinge shaft, and a connecting rod; the cylinder is fixedly installed on the top of the working plate, the cylinder rod end is provided with a hinge joint, the cylinder is hinged to the hinge plate through the hinge joint, the hinge plate is hinged to one end of the connecting rod through the hinge shaft, the other end of the connecting rod is sleeved on the outside of the connecting shaft, and the hinge plate is rotatably installed on the top of the working plate; this scheme uses a cylinder and connecting rod to drive the swing arm to swing, which can provide a constant preload force for the conductor mechanism, so that the swing arm can adaptively deflect according to the change of wire tension, effectively buffering tension impact.

[0012] Preferably, the stopping mechanism includes a brake pad, a through hole, two mounting seats, a fixing plate, a second bolt, and a nut. The brake pad has through holes at both ends. One mounting seat is fixedly mounted on the top surface of the working plate. Both ends of the brake pad are fixedly mounted between the two mounting seats via the fixing plate. The second bolt passes through the fixing plate, the through hole, and the mounting seat in sequence, and the shank of the second bolt is threaded with a nut. The stopping mechanism also includes a first hinge seat, a second hinge seat, a connecting seat, and a mounting hole. The first hinge seat is fixedly mounted at one end of the other mounting seat, and the second hinge seat is fixedly mounted on one side surface of the connecting seat. The first and second hinge seats are hinged together. The connecting seat has a mounting hole inside, and the connecting seat is fixedly mounted inside the square groove through the mounting hole. This design provides friction braking force through the cooperation of the brake pad and the friction rubber belt. The clamping degree of the brake pad can be adjusted by the bolt and nut, flexibly adjusting the damping magnitude and braking force.

[0013] Preferably, the spindle is an extended spindle body, and two sets of wire reel assemblies can be fitted on the outer side of the spindle along the axial direction; this solution uses an extended spindle that can simultaneously fit two sets of wire reels, which can effectively extend the continuous wire feeding time of a single batch and reduce the number of reel change shutdowns during the production process.

[0014] By adopting the technical solution of this invention, a graded wire guiding structure is formed by setting an adaptive wire guiding mechanism, an auxiliary wire guiding post, and two sets of wire guiding mechanisms. This, combined with a drive mechanism that drives the swing-arm type wire guiding mechanism to adaptively deflect, can match the gradually decreasing outer diameter of the wire reel and adapt to the dynamic changes in the wire exit angle in real time. Combined with a spring buffer structure to absorb tension fluctuations, it can reduce wire loosening, skipping, and tangling faults, helping to maintain stable tension during the unwinding process, improving the uniformity of the twist pitch of the twisted strands, and ensuring the quality of the finished product. This device adopts an extended main shaft structure, which can simultaneously accommodate two sets of wire reel assemblies, extending the continuous feeding time for a single batch and reducing the frequency of reel changes and downtime during production, thus improving the production efficiency of the twisting operation. Combined with a stop mechanism and a friction rubber belt to form an adjustable friction damping structure, it can flexibly adjust the rotational preload to adapt to the unwinding needs of wires of different diameters and materials, improving the equipment's versatility and making adjustment and operation convenient. Attached Figure Description

[0015] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings; Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a structural schematic diagram from another perspective of the present invention; Figure 3 This is a schematic diagram of the structure of the second wire mechanism and the drive mechanism of the present invention; Figure 4This is a cross-sectional view of the wire reel assembly of the present invention. Figure 5 This is a schematic diagram of the adaptive line-crossing mechanism of the present invention; Figure 6 This is a top view of the present invention; Figure 7 For the present invention Figure 5 A magnified structural diagram of point A in the middle.

[0016] The symbols for the main components are explained below: 1. Support frame; 2. Working plate; 3. Wire reel mounting assembly; 4. Wire reel assembly; 5. Adaptive wire guiding mechanism; 6. Auxiliary wire guiding post; 7. First conductor mechanism; 8. Second conductor mechanism; 9. Drive mechanism; 10. Metal wire; 11. Stop mechanism; 101. Base plate; 102. Column; 301. Rotary seat; 302. Spindle; 303. Threaded hole; 304. Friction rubber belt; 401. Wire reel body; 402. Mounting groove; 403. Fixing plate; 404. Washer; 405. Screw; 501. Support rod; 502. Wire guiding tube; 503. Square groove; 504. Mounting bolt; 505. First pin; 506. Hook plate; 507. Spring; 508, Adjusting shaft; 509, Locking seat; 801, Swing arm body; 802, Second pin; 803, Limiting shaft; 804, Mounting shaft; 805, Guide wheel; 806, Bearing; 807, First bolt; 808, Connecting shaft; 809, Limiting groove; 901, Cylinder; 902, Hinge joint; 903, Hinge plate; 904, Hinge shaft; 905, Connecting rod; 1101, Brake pad; 1102, Through hole; 1103, Mounting seat; 1104, Fixing plate; 1105, Second bolt; 1106, Nut; 1107, First hinge seat; 1108, Second hinge seat; 1109, Connecting seat; 1110, Mounting hole. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments. Example 1:

[0018] Please see Figures 1 to 7This invention provides a technical solution: a wire feeding device for a tubular twisting machine, comprising a support frame 1, a working plate 2 on the top of the support frame 1, a wire reel mounting assembly 3 rotatably mounted on the center of the top surface of the working plate 2, and two sets of wire reel assemblies 4 sleeved on the wire reel mounting assembly 3; an adaptive wire guiding mechanism 5 and a first wire guiding mechanism 7 are respectively provided on the lower left and lower right ends of the top surface of the working plate 2, an auxiliary wire guiding post 6 is provided between the adaptive wire guiding mechanism 5 and the first wire guiding mechanism 7, and the auxiliary wire guiding post 6 is also installed on the top of the working plate 2; a second wire guiding mechanism 8 is provided on the upper right end of the top surface of the working plate 2, a driving mechanism 9 is hinged to one end of the second wire guiding mechanism 8, and the driving mechanism 9 is also fixed to the top of the working plate 2; a stop mechanism 11 is fixedly installed on one side of the adaptive wire guiding mechanism 5, and the other end of the stop mechanism 11 is fixed to the top of the working plate 2; and metal wire 10 is wound on the wire reel assembly 4.

[0019] In this invention, the working steps of the device are as follows: First, two sets of wire reel assemblies 4 are sequentially sleeved on the outside of the main shaft 302 of the wire reel mounting assembly 3, and locked and fixed by the fixing plate 403 and screw 405, so that the wire reel body 401 and the main shaft 302 are coaxially installed; the wire end of the metal wire 10 is led out from the wire reel assembly 4, sequentially passing around the cylindrical surface of the auxiliary wire guide post 6, passing through the wire guide tube 502 of the adaptive wire guide mechanism 5, passing through the guide wheel of the first guide mechanism 7, and finally being led outward by the wire guide wheel 805 of the second guide mechanism 8 to the traction end of the twisting machine; during the twisting operation, the metal wire 10 is continuously conveyed outward by the traction of the main machine, driving the wire reel mounting assembly 3 and the wire reel assembly 4 to rotate around the axis of the rotating seat 301. Synchronous rotation enables passive wire feeding; the brake pad 1101 of the stop mechanism 11 keeps in contact with the friction rubber belt 304 on the outside of the rotating seat 301, providing basic frictional damping for the rotation of the wire spool, and preventing the wire 10 from becoming loose and jumping due to excessive wire feeding caused by the rotational inertia of the wire spool; when the wire feeding tension of the wire 10 fluctuates, the support rod 501 of the adaptive wire guiding mechanism 5 deflects adaptively around the first pin 505, and absorbs the instantaneous tension impact with the elastic extension and contraction of the spring 507. At the same time, the cylinder 901 of the drive mechanism 9 drives the swing arm 801 of the second guide mechanism 8 to swing around the second pin 802 through the connecting rod 905, and adjusts the position of the wire guiding wheel 805 in real time to match the dynamic changes in the wire feeding angle, and maintains stable wire feeding tension.

[0020] The support frame 1 includes a base plate 101 and columns 102. The base plate 101 is made of thickened steel plate. Several columns 102 are vertically fixed on the top surface of the base plate 101. The top of the columns 102 is fixedly connected to the bottom surface of the working plate 2. This structure can provide a stable bearing foundation for the top working plate 2 and various functional components, while raising the operating height and facilitating the disassembly, replacement and daily maintenance of the wire reel assembly 4. The various wire guide mechanisms and auxiliary wire guide posts 6 set on the top surface of the working plate 2 together form a graded wire guiding path, so that the metal wire 10 always travels along the predetermined trajectory during the wire laying process, reducing the shaking and deviation of the wire during high-speed wire laying. Example 2:

[0021] Please see Figure 1 , Figure 2 , Figure 5 and Figure 7 In this invention, the adaptive wire guiding mechanism 5 includes a support rod 501, a first pin 505, and a spring 507. A square groove 503 is formed in the middle of one side of the support rod 501. A fixing bolt 504 is threaded onto the top of the support rod corresponding to the square groove 503. The body of the support rod 501 is hinged to the top of the working plate 2 via the first pin 505. A wire guiding tube 502 is fixedly installed at the top of the support rod 501. A hook plate 506 is fixedly installed at one end of the support rod 501. The top surface of the working plate 2 is fixed... A locking seat 509 is fixedly provided, and an adjusting shaft 508 is installed on the internal thread of the locking seat 509. One end of the spring 507 is hooked to the hook plate 506, and the other end is hooked to one end of the adjusting shaft 508. The stopping mechanism 11 includes a brake pad 1101, a through hole 1102, two mounting seats 1103, a fixing plate 1104, a second bolt 1105, and a nut 1106. Both ends of the brake pad 1101 have through holes 1102, and one of the mounting seats 1103... 03 is fixedly installed on the top surface of the working plate 2. The two ends of the brake pad 1101 are fixedly installed between the two mounting seats 1103 through the fixing plate 1104. The second bolt 1105 passes through the fixing plate 1104, the through hole 1102 and the mounting seat 1103 in sequence. The rod of the second bolt 1105 is threaded with a nut 1106. The stopping mechanism 11 also includes a first hinge seat 1107, a second hinge seat 1108, a connecting seat 1109 and a mounting hole 1110. The first hinge... The first hinge 1107 is fixedly mounted on one end of another mounting base 1103, and the second hinge 1108 is fixedly mounted on one side surface of the connecting base 1109. The first hinge 1107 and the second hinge 1108 are hinged to each other. The connecting base 1109 has a mounting hole 1110 inside. The connecting base 1109 is fixedly mounted inside the square groove 503 of the support rod 501 through the mounting hole 1110, thereby realizing the linkage assembly of the stop mechanism 11 and the adaptive line-passing mechanism 5.

[0022] In this invention, based on the above-described embodiment one, the specific working process of the adaptive wire guiding mechanism 5 and the stopping mechanism 11 is as follows: During the wire feeding process, when the metal wire 10 passes through the wire guiding tube 502, it applies a pulling force to the support rod 501, causing the support rod 501 to deflect around the first pin 505; one end of the spring 507 is connected to the support rod 501 through the hook plate 506, and the other end is connected to the adjusting shaft 508. The elastic force of the spring 507 generates a reaction force on the deflection of the support rod 501. When the wire is fed... When the tension suddenly increases, the support rod 501 overcomes the tension of the spring 507 and deflects in the direction of wire release. The wire tube 502 moves synchronously with the support rod 501, thus buffering the tension impact. When the wire release tension decreases, the spring 507 pulls the support rod 501 back to its original position, keeping the wire 10 under tension at all times. The adjusting shaft 508 is threaded into the locking seat 509. The operator can change the extension length of the spring 507 by rotating the adjusting shaft 508, thereby flexibly adjusting the preload of the spring 507. The system adapts to the tension requirements of wires 10 with different diameters and materials. Simultaneously, when the support rod 501 deflects, it drives the connecting seat 1109 to move synchronously via the square groove 503. The connecting seat 1109, through the hinged engagement of the first hinge seat 1107 and the second hinge seat 1108, pushes the mounting seat 1103 to produce a slight oscillation, causing an adaptive change in the contact pressure between the brake pad 1101 fixed on the mounting seat 1103 and the friction rubber band 304. This automatically adjusts the friction damping magnitude when the wire tension fluctuates. Operators can also manually adjust the friction braking force by tightening the nut 1106 on the second bolt 1105 to adjust the pressure of the fixing plate 1104 on the brake pad 1101. The brake pad 1101 is preferably made of wear-resistant rubber or polyurethane material. The friction pair formed by it and the friction rubber band 304 has good wear resistance and a stable coefficient of friction. After long-term use, it can be quickly replaced by loosening the second bolt 1105.

[0023] The spring 507 is made of stainless steel piano wire, and its specific specifications are selected according to the wire diameter range and tension requirements of the processed metal wire 10. The locking seat 509 is welded or fixed to the top surface of the working plate 2 by screws. The locking seat 509 has a threaded through hole that matches the outer thread of the adjusting shaft 508. The adjusting shaft 508 passes through the locking seat 509 and has an annular groove or hook hole at the end for attaching the spring 507. The spring 507 and the adjusting shaft 508 are conventional mechanical standard parts in this field. Example 3:

[0024] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4In this invention, the wire reel mounting assembly 3 includes a rotating seat 301; the rotating seat 301 is rotatably mounted on the top surface of the working plate 2, and a main shaft 302 is vertically fixed at the center of the top surface of the rotating seat 301. A threaded hole 303 is opened on the top surface of the main shaft 302; a friction rubber belt 304 is circumferentially arranged on the outer side of the rotating seat 301, and the outer side of the friction rubber belt 304 contacts the end of the brake pad 1101 of the stop mechanism 11; the wire reel assembly 4 includes a wire reel body 401 and screws 405; mounting grooves 402 are opened at both ends inside the wire reel body 401, and the mounting grooves 402 are provided with screws. The fixed plate 403 and the wire reel body 401 are fixedly installed on the outside of the main shaft 302. A washer 404 is provided at the top of the main shaft 302, and a screw 405 passes through the washer 404 and is threaded into the threaded hole 303 at the top of the main shaft 302. The main shaft 302 is an extended shaft body, and two sets of wire reel assemblies 4 can be axially fitted on the outside of the main shaft 302. The second wire guide mechanism 8 includes a swing arm body 801, a second pin 802, a limiting shaft 803, a mounting shaft 804, a wire guide wheel 805, a bearing 806, a first bolt 807, a connecting shaft 808, and a limiting groove 80. 9; A limiting groove 809 is provided on the top surface of the working plate 2. The bottom end of the swing arm 801 is hinged to the top surface of the working plate 2 through the second pin 802. The limiting shaft 803 is fixedly set on the rod of the swing arm 801, and the limiting shaft 803 extends into the interior of the limiting groove 809. The top end of the swing arm 801 is fixedly set with a mounting shaft 804. The inside of the wire guide wheel 805 is provided with a bearing 806. The wire guide wheel 805 is sleeved on the outside of the mounting shaft 804 through the bearing 806. The first bolt 807 is threadedly connected to the top end of the mounting shaft 804. One end of the rod of the swing arm 801 is fixedly set with a connecting rod. The connecting shaft 808 is hinged to the power output end of the drive mechanism 9. The drive mechanism 9 includes a cylinder 901, a hinge joint 902, a hinge plate 903, a hinge shaft 904, and a connecting rod 905. The cylinder 901 is fixedly installed on the top of the work plate 2. The end of the cylinder 901 is provided with a hinge joint 902. The cylinder 901 is hinged to the hinge plate 903 through the hinge joint 902. The hinge plate 903 is hinged to one end of the connecting rod 905 through the hinge shaft 904. The other end of the connecting rod 905 is sleeved on the outside of the connecting shaft 808. The hinge plate 903 is rotatably installed on the top of the work plate 2.

[0025] In this invention, based on the above-described embodiments one and two, the specific working process of the wire reel mounting assembly 3, the wire reel assembly 4, the second conductor mechanism 8, and the drive mechanism 9 is as follows: First, when installing the wire reel assembly 4, the operator sequentially inserts the two sets of wire reel bodies 401 axially onto the outer side of the main shaft 302, aligning the mounting groove 402 inside the wire reel body 401 with the outer peripheral surface of the main shaft 302. Then, the fixing plate 403 is embedded into the mounting groove 402, so that the inner hole of the fixing plate 403 forms a tight fit or key connection with the outer peripheral surface of the main shaft 302, thereby circumferentially fixing the wire reel body 401 to the main shaft 302. After the two sets of wire reel assemblies 4 are installed, the shim 404 is placed on the top of the main shaft 302, and the screws 4... 05 passes through the gasket 404 and is screwed into the threaded hole 303 for locking, thereby achieving axial positioning of the two sets of wire reel assemblies 4 and preventing the wire reel body 401 from moving axially along the main shaft 302 during rotation. After the twisting machine is started, the metal wire 10 is led out to the twisting host through each conductor mechanism. The host's traction force pulls the metal wire 10 forward. The tension of the metal wire 10 is transmitted to the wire reel assembly 4 through the auxiliary wire guide post 6, the adaptive wire guide mechanism 5, and the first conductor mechanism 7, driving the wire reel body 401, the main shaft 302, and the rotating seat 301 to rotate synchronously, achieving passive wire release. The friction rubber belt 304 is sleeved on the outer circumference of the rotating seat 301 and keeps in contact with the brake pad 1101 of the stop mechanism 11, providing continuous frictional resistance during the rotation of the wire reel. To prevent the metal wire 10 from becoming loose due to excessively fast wire feeding speed; when the wire exit angle needs to be adjusted, cylinder 901 receives a control signal (issued by an external PLC controller or computer; the PLC controller is preferably a Siemens S7-1200 series or Mitsubishi FX series, both of which are conventional choices in this field). The extension and retraction movement of the cylinder 901 pushes the hinge joint 902, causing the hinge plate 903 to swing around its rotation center. The hinge plate 903 drives the connecting rod 905 to move through the hinge shaft 904. The other end of the connecting rod 905 pushes the swing arm 801 to swing around the second pin shaft 802 through the connecting shaft 808, thereby causing the wire guide wheel 805 installed at the top of the swing arm 801 to change position, adjusting the wire exit angle of the metal wire 10. The wire guide wheel 805 is always tangent to the direction of travel of the metal wire 10, reducing wire bending resistance and friction loss; the limiting shaft 803 slides inside the limiting groove 809 as the swing arm 801 swings. When the limiting shaft 803 abuts against the end of the limiting groove 809, the swing arm 801 reaches its maximum swing angle. The length of the limiting groove 809 limits the swing amplitude range of the swing arm 801, preventing the swing arm 801 from overtravel and causing damage to the components; the wire guide wheel 805 can rotate freely through the internal bearing 806. When the metal wire 10 passes through the surface of the wire guide wheel 805, the wire guide wheel 805 rotates synchronously with the travel of the metal wire 10, converting sliding friction into rolling friction, effectively reducing wire routing resistance and wire surface wear;Bearing 806 is preferably a deep groove ball bearing (such as models 6000ZZ, 6201ZZ, etc.), which has the characteristics of low frictional resistance and high upper speed limit; cylinder 901 is preferably a pen-shaped cylinder or standard cylinder from Airtac or SMC, such as the SMC CG1BN20-50Z cylinder, and the specific model is selected according to the actual swing arm drive stroke requirements; the control circuit connection method of the above electrical components is a conventional technology well known to those skilled in the art, and will not be described in detail here.

[0026] The main shaft 302 is an extended shaft, designed to accommodate two sets of wire reel assemblies 4 installed side by side. Compared with the traditional single-reel structure, this effectively extends the continuous unwinding time for a single batch, reduces the frequency of reel changes and downtime during production, and helps improve the production efficiency of twisting operations. After the metal wire 10 on one set of wire reel assemblies 4 is unwound, the operator can quickly switch the wire end to another set of fully loaded wire reel assemblies 4 to achieve seamless splicing without stopping the machine to change reels, further enhancing the continuous production capability. The friction rubber belt 304 is made of oil-resistant and wear-resistant rubber material and is fixed to the outer circumference of the rotating seat 301 by bonding or embedding. When wear occurs after long-term use, the brake pad 1101 of the stop mechanism 11 can be loosened and the rotating seat 301 can be removed from the working plate 2 to replace the friction rubber belt 304, making maintenance convenient.

[0027] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A yarn feeding device for a tubular twisting machine, comprising a support frame (1), characterized in that: The support frame (1) is provided with a working plate (2) at the top. A wire reel mounting assembly (3) is rotatably installed in the middle of the top surface of the working plate (2). Two sets of wire reel assemblies (4) are sleeved on the wire reel mounting assembly (3). An adaptive wire guiding mechanism (5) and a first wire guiding mechanism (7) are respectively provided at the lower left and lower right ends of the top surface of the working plate (2). An auxiliary wire guiding post (6) is provided between the adaptive wire guiding mechanism (5) and the first wire guiding mechanism (7). The auxiliary wire guiding post (6) is also installed at the top of the working plate (2). A second wire guiding mechanism (8) is provided at the upper right end of the top surface of the working plate (2). A driving mechanism (9) is hinged to one end of the second wire guiding mechanism (8). The driving mechanism (9) is also fixed to the top of the working plate (2). A stop mechanism (11) is fixedly installed on one side of the adaptive wire guiding mechanism (5). The other end of the stop mechanism (11) is fixed to the top of the working plate (2). Metal wire (10) is wound on the wire reel assembly (4). The metal wire (10) is led outward sequentially through the auxiliary wire guide post (6), the adaptive wire guide mechanism (5), the first wire guide mechanism (7), and the second wire guide mechanism (8); the adaptive wire guide mechanism (5) includes a support rod (501), a first pin (505), and a spring (507); a square groove (503) is provided in the middle of one side of the support rod (501), and a fixing bolt (504) is threaded on the top of the support rod corresponding to the position of the square groove (503); the rod body of the support rod (501) is connected to the first pin (6) and the second wire guide mechanism (8). A pin (505) is hinged to the top of the working plate (2), and a wire guide tube (502) is fixedly installed at the top of the support rod (501); a hook plate (506) is fixedly installed at one end of the support rod (501), and a locking seat (509) is fixedly installed on the top surface of the working plate (2). An adjusting shaft (508) is installed on the internal thread of the locking seat (509), and one end of the spring (507) is hooked to the hook plate (506), and the other end is hooked to one end of the adjusting shaft (508).

2. The unwinding device for a tubular twisting machine according to claim 1, characterized in that: The support frame (1) includes a base plate (101) and columns (102). Several columns (102) are vertically fixed on the top surface of the base plate (101), and the top of the columns (102) is fixedly connected to the bottom surface of the working plate (2).

3. The unwinding device for a tubular twisting machine according to claim 2, characterized in that: The coil mounting assembly (3) includes a rotating seat (301); the rotating seat (301) is rotatably mounted on the top surface of the working plate (2), and a main shaft (302) is vertically fixed at the center of the top surface of the rotating seat (301), and a threaded hole (303) is opened on the top surface of the main shaft (302); a friction rubber belt (304) is circumferentially arranged on the outer side of the rotating seat (301), and the outer side of the friction rubber belt (304) is in contact with the end of the stop mechanism (11).

4. The unwinding device for a tubular twisting machine according to claim 3, characterized in that: The wire reel assembly (4) includes a wire reel body (401) and screws (405); the wire reel body (401) has mounting grooves (402) at both ends inside, and a fixing plate (403) is provided inside the mounting groove (402). The wire reel body (401) is fixedly installed on the outside of the spindle (302) through the fixing plate (403); a washer (404) is provided at the top of the spindle (302), and the screw (405) passes through the washer (404) and is threaded into the threaded hole (303) at the top of the spindle (302).

5. The unwinding device for a tubular twisting machine according to claim 4, characterized in that: The main shaft (302) is an extended shaft body, and two sets of wire reel assemblies (4) can be sleeved on the outer side of the main shaft (302) along the axial direction.

6. The unwinding device for a tubular twisting machine according to claim 5, characterized in that: The second conductor mechanism (8) includes a swing arm (801), a second pin (802), a limiting shaft (803), a mounting shaft (804), a wire guide wheel (805), a bearing (806), a first bolt (807), a connecting shaft (808), and a limiting groove (809); the top surface of the working plate (2) has a limiting groove (809), the bottom end of the swing arm (801) is hinged to the top surface of the working plate (2) through the second pin (802), the limiting shaft (803) is fixedly set on the rod body of the swing arm (801), and the limiting shaft... (803) Extends into the interior of the limiting groove (809); the top end of the swing arm (801) is fixedly provided with an installation shaft (804), the inside of the guide wheel (805) is provided with a bearing (806), the guide wheel (805) is sleeved on the outside of the installation shaft (804) through the bearing (806), and the first bolt (807) is threadedly connected to the top end of the installation shaft (804); one end of the swing arm (801) is fixedly provided with a connecting shaft (808), and the connecting shaft (808) is hinged to the power output end of the drive mechanism (9).

7. The unwinding device for a tubular twisting machine according to claim 6, characterized in that: The drive mechanism (9) includes a cylinder (901), a hinge joint (902), a hinge plate (903), a hinge shaft (904), and a connecting rod (905). The cylinder (901) is fixedly installed on the top of the work plate (2). The end of the cylinder (901) is provided with a hinge joint (902). The cylinder (901) is hinged to the hinge plate (903) through the hinge joint (902). The hinge plate (903) is hinged to one end of the connecting rod (905) through the hinge shaft (904). The other end of the connecting rod (905) is sleeved on the outside of the connecting shaft (808). The hinge plate (903) is rotatably installed on the top of the work plate (2).

8. The unwinding device for a tubular twisting machine according to claim 7, characterized in that: The stopping mechanism (11) includes a brake pad (1101), a through hole (1102), two mounting seats (1103), a fixing plate (1104), a second bolt (1105), and a nut (1106). Both ends of the brake pad (1101) are provided with through holes (1102). One of the mounting seats (1103) is fixedly installed on the top surface of the working plate (2). Both ends of the brake pad (1101) are fixedly installed between the two mounting seats (1103) through the fixing plate (1104). The second bolt (1105) passes through the fixing plate (1104), the through hole (1102), and the mounting seat (1103) in sequence. The rod of the second bolt (1105) is threaded with a nut (1106).

9. The unwinding device for a tubular twisting machine according to claim 8, characterized in that: The stopping mechanism (11) further includes a first hinge seat (1107), a second hinge seat (1108), a connecting seat (1109), and a mounting hole (1110); the first hinge seat (1107) is fixedly disposed at one end of another mounting seat (1103), the second hinge seat (1108) is fixedly disposed on one side surface of the connecting seat (1109), and the first hinge seat (1107) and the second hinge seat (1108) are hinged to each other; the connecting seat (1109) has a mounting hole (1110) inside, and the connecting seat (1109) is fixedly installed inside the square groove (503) through the mounting hole (1110).

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